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ara-mdk / platform / external / webkit / 741ee32b92b59154ba524dd735809fda6211fc5b / . / Source / WebCore / editing / Editor.cpp
blob: b72a5466eaca50d489f0cf596f631e4fa2e6d393 [file] [log] [blame]
/*
* Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "Editor.h"
#include "AXObjectCache.h"
#include "ApplyStyleCommand.h"
#include "CSSComputedStyleDeclaration.h"
#include "CSSMutableStyleDeclaration.h"
#include "CSSProperty.h"
#include "CSSPropertyNames.h"
#include "CSSStyleSelector.h"
#include "CSSValueKeywords.h"
#include "CachedResourceLoader.h"
#include "ClipboardEvent.h"
#include "CompositionEvent.h"
#include "SpellingCorrectionController.h"
#include "CreateLinkCommand.h"
#include "DeleteButtonController.h"
#include "DeleteSelectionCommand.h"
#include "DocumentFragment.h"
#include "DocumentMarkerController.h"
#include "EditingText.h"
#include "EditorClient.h"
#include "EventHandler.h"
#include "EventNames.h"
#include "FocusController.h"
#include "Frame.h"
#include "FrameTree.h"
#include "FrameView.h"
#include "GraphicsContext.h"
#include "HTMLFrameOwnerElement.h"
#include "HTMLInputElement.h"
#include "HTMLTextAreaElement.h"
#include "HitTestResult.h"
#include "IndentOutdentCommand.h"
#include "InsertListCommand.h"
#include "KeyboardEvent.h"
#include "KillRing.h"
#include "ModifySelectionListLevel.h"
#include "NodeList.h"
#include "Page.h"
#include "Pasteboard.h"
#include "TextCheckingHelper.h"
#include "RemoveFormatCommand.h"
#include "RenderBlock.h"
#include "RenderPart.h"
#include "RenderTextControl.h"
#include "ReplaceSelectionCommand.h"
#include "Settings.h"
#include "Sound.h"
#include "SpellChecker.h"
#include "SpellingCorrectionCommand.h"
#include "Text.h"
#include "TextEvent.h"
#include "TextIterator.h"
#include "TypingCommand.h"
#include "UserTypingGestureIndicator.h"
#include "htmlediting.h"
#include "markup.h"
#include "visible_units.h"
#include <wtf/UnusedParam.h>
#include <wtf/unicode/CharacterNames.h>
#include <wtf/unicode/Unicode.h>
namespace WebCore {
using namespace std;
using namespace HTMLNames;
using namespace WTF;
using namespace Unicode;
// When an event handler has moved the selection outside of a text control
// we should use the target control's selection for this editing operation.
VisibleSelection Editor::selectionForCommand(Event* event)
{
VisibleSelection selection = m_frame->selection()->selection();
if (!event)
return selection;
// If the target is a text control, and the current selection is outside of its shadow tree,
// then use the saved selection for that text control.
Node* target = event->target()->toNode();
Node* selectionStart = selection.start().deprecatedNode();
if (target && (!selectionStart || target->shadowAncestorNode() != selectionStart->shadowAncestorNode())) {
RefPtr<Range> range;
if (target->hasTagName(inputTag) && static_cast<HTMLInputElement*>(target)->isTextField())
range = static_cast<HTMLInputElement*>(target)->selection();
else if (target->hasTagName(textareaTag))
range = static_cast<HTMLTextAreaElement*>(target)->selection();
if (range)
return VisibleSelection(range.get());
}
return selection;
}
// Function considers Mac editing behavior a fallback when Page or Settings is not available.
EditingBehavior Editor::behavior() const
{
if (!m_frame || !m_frame->settings())
return EditingBehavior(EditingMacBehavior);
return EditingBehavior(m_frame->settings()->editingBehaviorType());
}
EditorClient* Editor::client() const
{
if (Page* page = m_frame->page())
return page->editorClient();
return 0;
}
TextCheckerClient* Editor::textChecker() const
{
if (EditorClient* owner = client())
return owner->textChecker();
return 0;
}
void Editor::handleKeyboardEvent(KeyboardEvent* event)
{
if (EditorClient* c = client())
c->handleKeyboardEvent(event);
}
void Editor::handleInputMethodKeydown(KeyboardEvent* event)
{
if (EditorClient* c = client())
c->handleInputMethodKeydown(event);
}
bool Editor::handleTextEvent(TextEvent* event)
{
// Default event handling for Drag and Drop will be handled by DragController
// so we leave the event for it.
if (event->isDrop())
return false;
if (event->isPaste()) {
if (event->pastingFragment())
replaceSelectionWithFragment(event->pastingFragment(), false, event->shouldSmartReplace(), event->shouldMatchStyle());
else
replaceSelectionWithText(event->data(), false, event->shouldSmartReplace());
return true;
}
String data = event->data();
if (data == "\n") {
if (event->isLineBreak())
return insertLineBreak();
return insertParagraphSeparator();
}
return insertTextWithoutSendingTextEvent(data, false, event);
}
bool Editor::canEdit() const
{
return m_frame->selection()->rootEditableElement();
}
bool Editor::canEditRichly() const
{
return m_frame->selection()->isContentRichlyEditable();
}
// WinIE uses onbeforecut and onbeforepaste to enables the cut and paste menu items. They
// also send onbeforecopy, apparently for symmetry, but it doesn't affect the menu items.
// We need to use onbeforecopy as a real menu enabler because we allow elements that are not
// normally selectable to implement copy/paste (like divs, or a document body).
bool Editor::canDHTMLCut()
{
return !m_frame->selection()->isInPasswordField() && !dispatchCPPEvent(eventNames().beforecutEvent, ClipboardNumb);
}
bool Editor::canDHTMLCopy()
{
return !m_frame->selection()->isInPasswordField() && !dispatchCPPEvent(eventNames().beforecopyEvent, ClipboardNumb);
}
bool Editor::canDHTMLPaste()
{
return !dispatchCPPEvent(eventNames().beforepasteEvent, ClipboardNumb);
}
bool Editor::canCut() const
{
return canCopy() && canDelete();
}
static HTMLImageElement* imageElementFromImageDocument(Document* document)
{
if (!document)
return 0;
if (!document->isImageDocument())
return 0;
HTMLElement* body = document->body();
if (!body)
return 0;
Node* node = body->firstChild();
if (!node)
return 0;
if (!node->hasTagName(imgTag))
return 0;
return static_cast<HTMLImageElement*>(node);
}
bool Editor::canCopy() const
{
if (imageElementFromImageDocument(m_frame->document()))
return true;
SelectionController* selection = m_frame->selection();
return selection->isRange() && !selection->isInPasswordField();
}
bool Editor::canPaste() const
{
return canEdit();
}
bool Editor::canDelete() const
{
SelectionController* selection = m_frame->selection();
return selection->isRange() && selection->rootEditableElement();
}
bool Editor::canDeleteRange(Range* range) const
{
ExceptionCode ec = 0;
Node* startContainer = range->startContainer(ec);
Node* endContainer = range->endContainer(ec);
if (!startContainer || !endContainer)
return false;
if (!startContainer->rendererIsEditable() || !endContainer->rendererIsEditable())
return false;
if (range->collapsed(ec)) {
VisiblePosition start(Position(startContainer, range->startOffset(ec), Position::PositionIsOffsetInAnchor), DOWNSTREAM);
VisiblePosition previous = start.previous();
// FIXME: We sometimes allow deletions at the start of editable roots, like when the caret is in an empty list item.
if (previous.isNull() || previous.deepEquivalent().deprecatedNode()->rootEditableElement() != startContainer->rootEditableElement())
return false;
}
return true;
}
bool Editor::smartInsertDeleteEnabled()
{
return client() && client()->smartInsertDeleteEnabled();
}
bool Editor::canSmartCopyOrDelete()
{
return client() && client()->smartInsertDeleteEnabled() && m_frame->selection()->granularity() == WordGranularity;
}
bool Editor::isSelectTrailingWhitespaceEnabled()
{
return client() && client()->isSelectTrailingWhitespaceEnabled();
}
bool Editor::deleteWithDirection(SelectionDirection direction, TextGranularity granularity, bool killRing, bool isTypingAction)
{
if (!canEdit())
return false;
if (m_frame->selection()->isRange()) {
if (isTypingAction) {
TypingCommand::deleteKeyPressed(m_frame->document(), canSmartCopyOrDelete() ? TypingCommand::SmartDelete : 0, granularity);
revealSelectionAfterEditingOperation();
} else {
if (killRing)
addToKillRing(selectedRange().get(), false);
deleteSelectionWithSmartDelete(canSmartCopyOrDelete());
// Implicitly calls revealSelectionAfterEditingOperation().
}
} else {
TypingCommand::Options options = 0;
if (canSmartCopyOrDelete())
options |= TypingCommand::SmartDelete;
if (killRing)
options |= TypingCommand::KillRing;
switch (direction) {
case DirectionForward:
case DirectionRight:
TypingCommand::forwardDeleteKeyPressed(m_frame->document(), options, granularity);
break;
case DirectionBackward:
case DirectionLeft:
TypingCommand::deleteKeyPressed(m_frame->document(), options, granularity);
break;
}
revealSelectionAfterEditingOperation();
}
// FIXME: We should to move this down into deleteKeyPressed.
// clear the "start new kill ring sequence" setting, because it was set to true
// when the selection was updated by deleting the range
if (killRing)
setStartNewKillRingSequence(false);
return true;
}
void Editor::deleteSelectionWithSmartDelete(bool smartDelete)
{
if (m_frame->selection()->isNone())
return;
applyCommand(DeleteSelectionCommand::create(m_frame->document(), smartDelete));
}
void Editor::pasteAsPlainText(const String& pastingText, bool smartReplace)
{
Node* target = findEventTargetFromSelection();
if (!target)
return;
ExceptionCode ec = 0;
target->dispatchEvent(TextEvent::createForPlainTextPaste(m_frame->domWindow(), pastingText, smartReplace), ec);
}
void Editor::pasteAsFragment(PassRefPtr<DocumentFragment> pastingFragment, bool smartReplace, bool matchStyle)
{
Node* target = findEventTargetFromSelection();
if (!target)
return;
ExceptionCode ec = 0;
target->dispatchEvent(TextEvent::createForFragmentPaste(m_frame->domWindow(), pastingFragment, smartReplace, matchStyle), ec);
}
void Editor::pasteAsPlainTextBypassingDHTML()
{
pasteAsPlainTextWithPasteboard(Pasteboard::generalPasteboard());
}
void Editor::pasteAsPlainTextWithPasteboard(Pasteboard* pasteboard)
{
String text = pasteboard->plainText(m_frame);
if (client() && client()->shouldInsertText(text, selectedRange().get(), EditorInsertActionPasted))
pasteAsPlainText(text, canSmartReplaceWithPasteboard(pasteboard));
}
#if !PLATFORM(MAC)
void Editor::pasteWithPasteboard(Pasteboard* pasteboard, bool allowPlainText)
{
RefPtr<Range> range = selectedRange();
bool chosePlainText;
RefPtr<DocumentFragment> fragment = pasteboard->documentFragment(m_frame, range, allowPlainText, chosePlainText);
if (fragment && shouldInsertFragment(fragment, range, EditorInsertActionPasted))
pasteAsFragment(fragment, canSmartReplaceWithPasteboard(pasteboard), chosePlainText);
}
#endif
bool Editor::canSmartReplaceWithPasteboard(Pasteboard* pasteboard)
{
return client() && client()->smartInsertDeleteEnabled() && pasteboard->canSmartReplace();
}
bool Editor::shouldInsertFragment(PassRefPtr<DocumentFragment> fragment, PassRefPtr<Range> replacingDOMRange, EditorInsertAction givenAction)
{
if (!client())
return false;
if (fragment) {
Node* child = fragment->firstChild();
if (child && fragment->lastChild() == child && child->isCharacterDataNode())
return client()->shouldInsertText(static_cast<CharacterData*>(child)->data(), replacingDOMRange.get(), givenAction);
}
return client()->shouldInsertNode(fragment.get(), replacingDOMRange.get(), givenAction);
}
void Editor::replaceSelectionWithFragment(PassRefPtr<DocumentFragment> fragment, bool selectReplacement, bool smartReplace, bool matchStyle)
{
if (m_frame->selection()->isNone() || !fragment)
return;
ReplaceSelectionCommand::CommandOptions options = ReplaceSelectionCommand::PreventNesting;
if (selectReplacement)
options |= ReplaceSelectionCommand::SelectReplacement;
if (smartReplace)
options |= ReplaceSelectionCommand::SmartReplace;
if (matchStyle)
options |= ReplaceSelectionCommand::MatchStyle;
applyCommand(ReplaceSelectionCommand::create(m_frame->document(), fragment, options, EditActionPaste));
revealSelectionAfterEditingOperation();
Node* nodeToCheck = m_frame->selection()->rootEditableElement();
if (m_spellChecker->canCheckAsynchronously(nodeToCheck))
m_spellChecker->requestCheckingFor(textCheckingTypeMaskFor(MarkSpelling | MarkGrammar), nodeToCheck);
}
void Editor::replaceSelectionWithText(const String& text, bool selectReplacement, bool smartReplace)
{
replaceSelectionWithFragment(createFragmentFromText(selectedRange().get(), text), selectReplacement, smartReplace, true);
}
PassRefPtr<Range> Editor::selectedRange()
{
if (!m_frame)
return 0;
return m_frame->selection()->toNormalizedRange();
}
bool Editor::shouldDeleteRange(Range* range) const
{
ExceptionCode ec;
if (!range || range->collapsed(ec))
return false;
if (!canDeleteRange(range))
return false;
return client() && client()->shouldDeleteRange(range);
}
bool Editor::tryDHTMLCopy()
{
if (m_frame->selection()->isInPasswordField())
return false;
if (canCopy())
// Must be done before oncopy adds types and data to the pboard,
// also done for security, as it erases data from the last copy/paste.
Pasteboard::generalPasteboard()->clear();
return !dispatchCPPEvent(eventNames().copyEvent, ClipboardWritable);
}
bool Editor::tryDHTMLCut()
{
if (m_frame->selection()->isInPasswordField())
return false;
if (canCut())
// Must be done before oncut adds types and data to the pboard,
// also done for security, as it erases data from the last copy/paste.
Pasteboard::generalPasteboard()->clear();
return !dispatchCPPEvent(eventNames().cutEvent, ClipboardWritable);
}
bool Editor::tryDHTMLPaste()
{
return !dispatchCPPEvent(eventNames().pasteEvent, ClipboardReadable);
}
void Editor::writeSelectionToPasteboard(Pasteboard* pasteboard)
{
pasteboard->writeSelection(selectedRange().get(), canSmartCopyOrDelete(), m_frame);
}
bool Editor::shouldInsertText(const String& text, Range* range, EditorInsertAction action) const
{
return client() && client()->shouldInsertText(text, range, action);
}
bool Editor::shouldShowDeleteInterface(HTMLElement* element) const
{
return client() && client()->shouldShowDeleteInterface(element);
}
void Editor::respondToChangedSelection(const VisibleSelection& oldSelection)
{
if (client())
client()->respondToChangedSelection();
m_deleteButtonController->respondToChangedSelection(oldSelection);
m_spellingCorrector->respondToChangedSelection(oldSelection);
}
void Editor::respondToChangedContents(const VisibleSelection& endingSelection)
{
if (AXObjectCache::accessibilityEnabled()) {
Node* node = endingSelection.start().deprecatedNode();
if (node)
m_frame->document()->axObjectCache()->postNotification(node->renderer(), AXObjectCache::AXValueChanged, false);
}
updateMarkersForWordsAffectedByEditing(true);
if (client())
client()->respondToChangedContents();
}
const SimpleFontData* Editor::fontForSelection(bool& hasMultipleFonts) const
{
#if !PLATFORM(QT)
hasMultipleFonts = false;
if (!m_frame->selection()->isRange()) {
Node* nodeToRemove;
RenderStyle* style = styleForSelectionStart(nodeToRemove); // sets nodeToRemove
const SimpleFontData* result = 0;
if (style)
result = style->font().primaryFont();
if (nodeToRemove) {
ExceptionCode ec;
nodeToRemove->remove(ec);
ASSERT(!ec);
}
return result;
}
const SimpleFontData* font = 0;
RefPtr<Range> range = m_frame->selection()->toNormalizedRange();
Node* startNode = range->editingStartPosition().deprecatedNode();
if (startNode) {
Node* pastEnd = range->pastLastNode();
// In the loop below, n should eventually match pastEnd and not become nil, but we've seen at least one
// unreproducible case where this didn't happen, so check for nil also.
for (Node* n = startNode; n && n != pastEnd; n = n->traverseNextNode()) {
RenderObject* renderer = n->renderer();
if (!renderer)
continue;
// FIXME: Are there any node types that have renderers, but that we should be skipping?
const SimpleFontData* f = renderer->style()->font().primaryFont();
if (!font)
font = f;
else if (font != f) {
hasMultipleFonts = true;
break;
}
}
}
return font;
#else
return 0;
#endif
}
WritingDirection Editor::textDirectionForSelection(bool& hasNestedOrMultipleEmbeddings) const
{
hasNestedOrMultipleEmbeddings = true;
if (m_frame->selection()->isNone())
return NaturalWritingDirection;
Position position = m_frame->selection()->selection().start().downstream();
Node* node = position.deprecatedNode();
if (!node)
return NaturalWritingDirection;
Position end;
if (m_frame->selection()->isRange()) {
end = m_frame->selection()->selection().end().upstream();
Node* pastLast = Range::create(m_frame->document(), position.parentAnchoredEquivalent(), end.parentAnchoredEquivalent())->pastLastNode();
for (Node* n = node; n && n != pastLast; n = n->traverseNextNode()) {
if (!n->isStyledElement())
continue;
RefPtr<CSSComputedStyleDeclaration> style = computedStyle(n);
RefPtr<CSSValue> unicodeBidi = style->getPropertyCSSValue(CSSPropertyUnicodeBidi);
if (!unicodeBidi || !unicodeBidi->isPrimitiveValue())
continue;
int unicodeBidiValue = static_cast<CSSPrimitiveValue*>(unicodeBidi.get())->getIdent();
if (unicodeBidiValue == CSSValueEmbed || unicodeBidiValue == CSSValueBidiOverride)
return NaturalWritingDirection;
}
}
if (m_frame->selection()->isCaret()) {
RefPtr<EditingStyle> typingStyle = m_frame->selection()->typingStyle();
WritingDirection direction;
if (typingStyle && typingStyle->textDirection(direction)) {
hasNestedOrMultipleEmbeddings = false;
return direction;
}
node = m_frame->selection()->selection().visibleStart().deepEquivalent().deprecatedNode();
}
// The selection is either a caret with no typing attributes or a range in which no embedding is added, so just use the start position
// to decide.
Node* block = enclosingBlock(node);
WritingDirection foundDirection = NaturalWritingDirection;
for (; node != block; node = node->parentNode()) {
if (!node->isStyledElement())
continue;
RefPtr<CSSComputedStyleDeclaration> style = computedStyle(node);
RefPtr<CSSValue> unicodeBidi = style->getPropertyCSSValue(CSSPropertyUnicodeBidi);
if (!unicodeBidi || !unicodeBidi->isPrimitiveValue())
continue;
int unicodeBidiValue = static_cast<CSSPrimitiveValue*>(unicodeBidi.get())->getIdent();
if (unicodeBidiValue == CSSValueNormal)
continue;
if (unicodeBidiValue == CSSValueBidiOverride)
return NaturalWritingDirection;
ASSERT(unicodeBidiValue == CSSValueEmbed);
RefPtr<CSSValue> direction = style->getPropertyCSSValue(CSSPropertyDirection);
if (!direction || !direction->isPrimitiveValue())
continue;
int directionValue = static_cast<CSSPrimitiveValue*>(direction.get())->getIdent();
if (directionValue != CSSValueLtr && directionValue != CSSValueRtl)
continue;
if (foundDirection != NaturalWritingDirection)
return NaturalWritingDirection;
// In the range case, make sure that the embedding element persists until the end of the range.
if (m_frame->selection()->isRange() && !end.deprecatedNode()->isDescendantOf(node))
return NaturalWritingDirection;
foundDirection = directionValue == CSSValueLtr ? LeftToRightWritingDirection : RightToLeftWritingDirection;
}
hasNestedOrMultipleEmbeddings = false;
return foundDirection;
}
bool Editor::hasBidiSelection() const
{
if (m_frame->selection()->isNone())
return false;
Node* startNode;
if (m_frame->selection()->isRange()) {
startNode = m_frame->selection()->selection().start().downstream().deprecatedNode();
Node* endNode = m_frame->selection()->selection().end().upstream().deprecatedNode();
if (enclosingBlock(startNode) != enclosingBlock(endNode))
return false;
} else
startNode = m_frame->selection()->selection().visibleStart().deepEquivalent().deprecatedNode();
RenderObject* renderer = startNode->renderer();
while (renderer && !renderer->isRenderBlock())
renderer = renderer->parent();
if (!renderer)
return false;
RenderStyle* style = renderer->style();
if (!style->isLeftToRightDirection())
return true;
return toRenderBlock(renderer)->containsNonZeroBidiLevel();
}
TriState Editor::selectionUnorderedListState() const
{
if (m_frame->selection()->isCaret()) {
if (enclosingNodeWithTag(m_frame->selection()->selection().start(), ulTag))
return TrueTriState;
} else if (m_frame->selection()->isRange()) {
Node* startNode = enclosingNodeWithTag(m_frame->selection()->selection().start(), ulTag);
Node* endNode = enclosingNodeWithTag(m_frame->selection()->selection().end(), ulTag);
if (startNode && endNode && startNode == endNode)
return TrueTriState;
}
return FalseTriState;
}
TriState Editor::selectionOrderedListState() const
{
if (m_frame->selection()->isCaret()) {
if (enclosingNodeWithTag(m_frame->selection()->selection().start(), olTag))
return TrueTriState;
} else if (m_frame->selection()->isRange()) {
Node* startNode = enclosingNodeWithTag(m_frame->selection()->selection().start(), olTag);
Node* endNode = enclosingNodeWithTag(m_frame->selection()->selection().end(), olTag);
if (startNode && endNode && startNode == endNode)
return TrueTriState;
}
return FalseTriState;
}
PassRefPtr<Node> Editor::insertOrderedList()
{
if (!canEditRichly())
return 0;
RefPtr<Node> newList = InsertListCommand::insertList(m_frame->document(), InsertListCommand::OrderedList);
revealSelectionAfterEditingOperation();
return newList;
}
PassRefPtr<Node> Editor::insertUnorderedList()
{
if (!canEditRichly())
return 0;
RefPtr<Node> newList = InsertListCommand::insertList(m_frame->document(), InsertListCommand::UnorderedList);
revealSelectionAfterEditingOperation();
return newList;
}
bool Editor::canIncreaseSelectionListLevel()
{
return canEditRichly() && IncreaseSelectionListLevelCommand::canIncreaseSelectionListLevel(m_frame->document());
}
bool Editor::canDecreaseSelectionListLevel()
{
return canEditRichly() && DecreaseSelectionListLevelCommand::canDecreaseSelectionListLevel(m_frame->document());
}
PassRefPtr<Node> Editor::increaseSelectionListLevel()
{
if (!canEditRichly() || m_frame->selection()->isNone())
return 0;
RefPtr<Node> newList = IncreaseSelectionListLevelCommand::increaseSelectionListLevel(m_frame->document());
revealSelectionAfterEditingOperation();
return newList;
}
PassRefPtr<Node> Editor::increaseSelectionListLevelOrdered()
{
if (!canEditRichly() || m_frame->selection()->isNone())
return 0;
RefPtr<Node> newList = IncreaseSelectionListLevelCommand::increaseSelectionListLevelOrdered(m_frame->document());
revealSelectionAfterEditingOperation();
return newList.release();
}
PassRefPtr<Node> Editor::increaseSelectionListLevelUnordered()
{
if (!canEditRichly() || m_frame->selection()->isNone())
return 0;
RefPtr<Node> newList = IncreaseSelectionListLevelCommand::increaseSelectionListLevelUnordered(m_frame->document());
revealSelectionAfterEditingOperation();
return newList.release();
}
void Editor::decreaseSelectionListLevel()
{
if (!canEditRichly() || m_frame->selection()->isNone())
return;
DecreaseSelectionListLevelCommand::decreaseSelectionListLevel(m_frame->document());
revealSelectionAfterEditingOperation();
}
void Editor::removeFormattingAndStyle()
{
applyCommand(RemoveFormatCommand::create(m_frame->document()));
}
void Editor::clearLastEditCommand()
{
m_lastEditCommand.clear();
}
// Returns whether caller should continue with "the default processing", which is the same as
// the event handler NOT setting the return value to false
bool Editor::dispatchCPPEvent(const AtomicString &eventType, ClipboardAccessPolicy policy)
{
Node* target = findEventTargetFromSelection();
if (!target)
return true;
RefPtr<Clipboard> clipboard = newGeneralClipboard(policy, m_frame);
ExceptionCode ec = 0;
RefPtr<Event> evt = ClipboardEvent::create(eventType, true, true, clipboard);
target->dispatchEvent(evt, ec);
bool noDefaultProcessing = evt->defaultPrevented();
// invalidate clipboard here for security
clipboard->setAccessPolicy(ClipboardNumb);
return !noDefaultProcessing;
}
Node* Editor::findEventTargetFrom(const VisibleSelection& selection) const
{
Node* target = selection.start().element();
if (!target)
target = m_frame->document()->body();
if (!target)
return 0;
return target->shadowAncestorNode();
}
Node* Editor::findEventTargetFromSelection() const
{
return findEventTargetFrom(m_frame->selection()->selection());
}
void Editor::applyStyle(CSSStyleDeclaration* style, EditAction editingAction)
{
switch (m_frame->selection()->selectionType()) {
case VisibleSelection::NoSelection:
// do nothing
break;
case VisibleSelection::CaretSelection:
computeAndSetTypingStyle(style, editingAction);
break;
case VisibleSelection::RangeSelection:
if (style)
applyCommand(ApplyStyleCommand::create(m_frame->document(), EditingStyle::create(style).get(), editingAction));
break;
}
}
bool Editor::shouldApplyStyle(CSSStyleDeclaration* style, Range* range)
{
return client()->shouldApplyStyle(style, range);
}
void Editor::applyParagraphStyle(CSSStyleDeclaration* style, EditAction editingAction)
{
switch (m_frame->selection()->selectionType()) {
case VisibleSelection::NoSelection:
// do nothing
break;
case VisibleSelection::CaretSelection:
case VisibleSelection::RangeSelection:
if (style)
applyCommand(ApplyStyleCommand::create(m_frame->document(), EditingStyle::create(style).get(), editingAction, ApplyStyleCommand::ForceBlockProperties));
break;
}
}
void Editor::applyStyleToSelection(CSSStyleDeclaration* style, EditAction editingAction)
{
if (!style || !style->length() || !canEditRichly())
return;
if (client() && client()->shouldApplyStyle(style, m_frame->selection()->toNormalizedRange().get()))
applyStyle(style, editingAction);
}
void Editor::applyParagraphStyleToSelection(CSSStyleDeclaration* style, EditAction editingAction)
{
if (!style || !style->length() || !canEditRichly())
return;
if (client() && client()->shouldApplyStyle(style, m_frame->selection()->toNormalizedRange().get()))
applyParagraphStyle(style, editingAction);
}
bool Editor::selectionStartHasStyle(int propertyID, const String& value) const
{
RefPtr<EditingStyle> style = EditingStyle::create(propertyID, value);
RefPtr<EditingStyle> selectionStyle = selectionStartStyle();
if (!selectionStyle || !selectionStyle->style())
return false;
return style->triStateOfStyle(selectionStyle->style()) == TrueTriState;
}
TriState Editor::selectionHasStyle(int propertyID, const String& value) const
{
RefPtr<EditingStyle> style = EditingStyle::create(propertyID, value);
if (!m_frame->selection()->isCaretOrRange())
return FalseTriState;
if (m_frame->selection()->isCaret()) {
RefPtr<EditingStyle> selectionStyle = selectionStartStyle();
if (!selectionStyle || !selectionStyle->style())
return FalseTriState;
return style->triStateOfStyle(selectionStyle->style());
}
TriState state = FalseTriState;
for (Node* node = m_frame->selection()->start().deprecatedNode(); node; node = node->traverseNextNode()) {
RefPtr<CSSComputedStyleDeclaration> nodeStyle = computedStyle(node);
if (nodeStyle) {
TriState nodeState = style->triStateOfStyle(nodeStyle.get(), node->isTextNode() ? EditingStyle::DoNotIgnoreTextOnlyProperties : EditingStyle::IgnoreTextOnlyProperties);
if (node == m_frame->selection()->start().deprecatedNode())
state = nodeState;
else if (state != nodeState && node->isTextNode()) {
state = MixedTriState;
break;
}
}
if (node == m_frame->selection()->end().deprecatedNode())
break;
}
return state;
}
static bool hasTransparentBackgroundColor(CSSStyleDeclaration* style)
{
RefPtr<CSSValue> cssValue = style->getPropertyCSSValue(CSSPropertyBackgroundColor);
if (!cssValue)
return true;
if (!cssValue->isPrimitiveValue())
return false;
CSSPrimitiveValue* value = static_cast<CSSPrimitiveValue*>(cssValue.get());
if (value->primitiveType() == CSSPrimitiveValue::CSS_RGBCOLOR)
return !alphaChannel(value->getRGBA32Value());
return value->getIdent() == CSSValueTransparent;
}
String Editor::selectionStartCSSPropertyValue(int propertyID)
{
RefPtr<EditingStyle> selectionStyle = selectionStartStyle();
if (!selectionStyle || !selectionStyle->style())
return String();
String value = selectionStyle->style()->getPropertyValue(propertyID);
// If background color is transparent, traverse parent nodes until we hit a different value or document root
// Also, if the selection is a range, ignore the background color at the start of selection,
// and find the background color of the common ancestor.
if (propertyID == CSSPropertyBackgroundColor && (m_frame->selection()->isRange() || hasTransparentBackgroundColor(selectionStyle->style()))) {
RefPtr<Range> range(m_frame->selection()->toNormalizedRange());
ExceptionCode ec = 0;
for (Node* ancestor = range->commonAncestorContainer(ec); ancestor; ancestor = ancestor->parentNode()) {
RefPtr<CSSComputedStyleDeclaration> ancestorStyle = computedStyle(ancestor);
if (!hasTransparentBackgroundColor(ancestorStyle.get()))
return ancestorStyle->getPropertyValue(CSSPropertyBackgroundColor);
}
}
if (propertyID == CSSPropertyFontSize) {
RefPtr<CSSValue> cssValue = selectionStyle->style()->getPropertyCSSValue(CSSPropertyFontSize);
if (cssValue->isPrimitiveValue()) {
value = String::number(legacyFontSizeFromCSSValue(m_frame->document(), static_cast<CSSPrimitiveValue*>(cssValue.get()),
selectionStyle->shouldUseFixedDefaultFontSize(), AlwaysUseLegacyFontSize));
}
}
return value;
}
void Editor::indent()
{
applyCommand(IndentOutdentCommand::create(m_frame->document(), IndentOutdentCommand::Indent));
}
void Editor::outdent()
{
applyCommand(IndentOutdentCommand::create(m_frame->document(), IndentOutdentCommand::Outdent));
}
static void dispatchEditableContentChangedEvents(const EditCommand& command)
{
Element* startRoot = command.startingRootEditableElement();
Element* endRoot = command.endingRootEditableElement();
ExceptionCode ec;
if (startRoot)
startRoot->dispatchEvent(Event::create(eventNames().webkitEditableContentChangedEvent, false, false), ec);
if (endRoot && endRoot != startRoot)
endRoot->dispatchEvent(Event::create(eventNames().webkitEditableContentChangedEvent, false, false), ec);
}
void Editor::appliedEditing(PassRefPtr<EditCommand> cmd)
{
m_frame->document()->updateLayout();
dispatchEditableContentChangedEvents(*cmd);
VisibleSelection newSelection(cmd->endingSelection());
m_spellingCorrector->respondToAppliedEditing(cmd.get());
// Don't clear the typing style with this selection change. We do those things elsewhere if necessary.
changeSelectionAfterCommand(newSelection, false, false);
if (!cmd->preservesTypingStyle())
m_frame->selection()->clearTypingStyle();
// Command will be equal to last edit command only in the case of typing
if (m_lastEditCommand.get() == cmd)
ASSERT(cmd->isTypingCommand());
else {
// Only register a new undo command if the command passed in is
// different from the last command
m_lastEditCommand = cmd;
if (client())
client()->registerCommandForUndo(m_lastEditCommand);
}
respondToChangedContents(newSelection);
}
void Editor::unappliedEditing(PassRefPtr<EditCommand> cmd)
{
m_frame->document()->updateLayout();
dispatchEditableContentChangedEvents(*cmd);
VisibleSelection newSelection(cmd->startingSelection());
changeSelectionAfterCommand(newSelection, true, true);
m_lastEditCommand = 0;
if (client())
client()->registerCommandForRedo(cmd);
respondToChangedContents(newSelection);
}
void Editor::reappliedEditing(PassRefPtr<EditCommand> cmd)
{
m_frame->document()->updateLayout();
dispatchEditableContentChangedEvents(*cmd);
VisibleSelection newSelection(cmd->endingSelection());
changeSelectionAfterCommand(newSelection, true, true);
m_lastEditCommand = 0;
if (client())
client()->registerCommandForUndo(cmd);
respondToChangedContents(newSelection);
}
Editor::Editor(Frame* frame)
: m_frame(frame)
, m_deleteButtonController(adoptPtr(new DeleteButtonController(frame)))
, m_ignoreCompositionSelectionChange(false)
, m_shouldStartNewKillRingSequence(false)
// This is off by default, since most editors want this behavior (this matches IE but not FF).
, m_shouldStyleWithCSS(false)
, m_killRing(adoptPtr(new KillRing))
, m_spellChecker(adoptPtr(new SpellChecker(frame)))
, m_spellingCorrector(adoptPtr(new SpellingCorrectionController(frame)))
, m_areMarkedTextMatchesHighlighted(false)
{
}
Editor::~Editor()
{
}
void Editor::clear()
{
m_compositionNode = 0;
m_customCompositionUnderlines.clear();
m_shouldStyleWithCSS = false;
}
bool Editor::insertText(const String& text, Event* triggeringEvent)
{
return m_frame->eventHandler()->handleTextInputEvent(text, triggeringEvent);
}
bool Editor::insertTextForConfirmedComposition(const String& text)
{
return m_frame->eventHandler()->handleTextInputEvent(text, 0, TextEventInputComposition);
}
bool Editor::insertTextWithoutSendingTextEvent(const String& text, bool selectInsertedText, TextEvent* triggeringEvent)
{
if (text.isEmpty())
return false;
VisibleSelection selection = selectionForCommand(triggeringEvent);
if (!selection.isContentEditable())
return false;
RefPtr<Range> range = selection.toNormalizedRange();
if (!shouldInsertText(text, range.get(), EditorInsertActionTyped))
return true;
if (!text.isEmpty())
updateMarkersForWordsAffectedByEditing(text[0]);
bool shouldConsiderApplyingAutocorrection = false;
if (text == " " || text == "\t")
shouldConsiderApplyingAutocorrection = true;
if (text.length() == 1 && isPunct(text[0]) && !isAmbiguousBoundaryCharacter(text[0]))
shouldConsiderApplyingAutocorrection = true;
bool autocorrectionWasApplied = shouldConsiderApplyingAutocorrection && m_spellingCorrector->applyAutocorrectionBeforeTypingIfAppropriate();
// Get the selection to use for the event that triggered this insertText.
// If the event handler changed the selection, we may want to use a different selection
// that is contained in the event target.
selection = selectionForCommand(triggeringEvent);
if (selection.isContentEditable()) {
if (Node* selectionStart = selection.start().deprecatedNode()) {
RefPtr<Document> document = selectionStart->document();
// Insert the text
TypingCommand::Options options = 0;
if (selectInsertedText)
options |= TypingCommand::SelectInsertedText;
if (autocorrectionWasApplied)
options |= TypingCommand::RetainAutocorrectionIndicator;
TypingCommand::insertText(document.get(), text, selection, options, triggeringEvent && triggeringEvent->isComposition() ? TypingCommand::TextCompositionConfirm : TypingCommand::TextCompositionNone);
// Reveal the current selection
if (Frame* editedFrame = document->frame())
if (Page* page = editedFrame->page())
page->focusController()->focusedOrMainFrame()->selection()->revealSelection(ScrollAlignment::alignToEdgeIfNeeded);
}
}
return true;
}
bool Editor::insertLineBreak()
{
if (!canEdit())
return false;
if (!shouldInsertText("\n", m_frame->selection()->toNormalizedRange().get(), EditorInsertActionTyped))
return true;
bool autocorrectionIsApplied = m_spellingCorrector->applyAutocorrectionBeforeTypingIfAppropriate();
TypingCommand::insertLineBreak(m_frame->document(), autocorrectionIsApplied ? TypingCommand::RetainAutocorrectionIndicator : 0);
revealSelectionAfterEditingOperation();
return true;
}
bool Editor::insertParagraphSeparator()
{
if (!canEdit())
return false;
if (!canEditRichly())
return insertLineBreak();
if (!shouldInsertText("\n", m_frame->selection()->toNormalizedRange().get(), EditorInsertActionTyped))
return true;
bool autocorrectionIsApplied = m_spellingCorrector->applyAutocorrectionBeforeTypingIfAppropriate();
TypingCommand::insertParagraphSeparator(m_frame->document(), autocorrectionIsApplied ? TypingCommand::RetainAutocorrectionIndicator : 0);
revealSelectionAfterEditingOperation();
return true;
}
void Editor::cut()
{
if (tryDHTMLCut())
return; // DHTML did the whole operation
if (!canCut()) {
systemBeep();
return;
}
RefPtr<Range> selection = selectedRange();
if (shouldDeleteRange(selection.get())) {
updateMarkersForWordsAffectedByEditing(true);
if (isNodeInTextFormControl(m_frame->selection()->start().deprecatedNode()))
Pasteboard::generalPasteboard()->writePlainText(selectedText());
else
Pasteboard::generalPasteboard()->writeSelection(selection.get(), canSmartCopyOrDelete(), m_frame);
didWriteSelectionToPasteboard();
deleteSelectionWithSmartDelete(canSmartCopyOrDelete());
}
}
void Editor::copy()
{
if (tryDHTMLCopy())
return; // DHTML did the whole operation
if (!canCopy()) {
systemBeep();
return;
}
if (isNodeInTextFormControl(m_frame->selection()->start().deprecatedNode()))
Pasteboard::generalPasteboard()->writePlainText(selectedText());
else {
Document* document = m_frame->document();
if (HTMLImageElement* imageElement = imageElementFromImageDocument(document))
Pasteboard::generalPasteboard()->writeImage(imageElement, document->url(), document->title());
else
Pasteboard::generalPasteboard()->writeSelection(selectedRange().get(), canSmartCopyOrDelete(), m_frame);
}
didWriteSelectionToPasteboard();
}
void Editor::paste()
{
ASSERT(m_frame->document());
if (tryDHTMLPaste())
return; // DHTML did the whole operation
if (!canPaste())
return;
updateMarkersForWordsAffectedByEditing(false);
CachedResourceLoader* loader = m_frame->document()->cachedResourceLoader();
loader->setAllowStaleResources(true);
if (m_frame->selection()->isContentRichlyEditable())
pasteWithPasteboard(Pasteboard::generalPasteboard(), true);
else
pasteAsPlainTextWithPasteboard(Pasteboard::generalPasteboard());
loader->setAllowStaleResources(false);
}
void Editor::pasteAsPlainText()
{
if (tryDHTMLPaste())
return;
if (!canPaste())
return;
updateMarkersForWordsAffectedByEditing(false);
pasteAsPlainTextWithPasteboard(Pasteboard::generalPasteboard());
}
void Editor::performDelete()
{
if (!canDelete()) {
systemBeep();
return;
}
addToKillRing(selectedRange().get(), false);
deleteSelectionWithSmartDelete(canSmartCopyOrDelete());
// clear the "start new kill ring sequence" setting, because it was set to true
// when the selection was updated by deleting the range
setStartNewKillRingSequence(false);
}
void Editor::copyURL(const KURL& url, const String& title)
{
Pasteboard::generalPasteboard()->writeURL(url, title, m_frame);
}
void Editor::copyImage(const HitTestResult& result)
{
KURL url = result.absoluteLinkURL();
if (url.isEmpty())
url = result.absoluteImageURL();
Pasteboard::generalPasteboard()->writeImage(result.innerNonSharedNode(), url, result.altDisplayString());
}
bool Editor::isContinuousSpellCheckingEnabled()
{
return client() && client()->isContinuousSpellCheckingEnabled();
}
void Editor::toggleContinuousSpellChecking()
{
if (client())
client()->toggleContinuousSpellChecking();
}
bool Editor::isGrammarCheckingEnabled()
{
return client() && client()->isGrammarCheckingEnabled();
}
void Editor::toggleGrammarChecking()
{
if (client())
client()->toggleGrammarChecking();
}
int Editor::spellCheckerDocumentTag()
{
return client() ? client()->spellCheckerDocumentTag() : 0;
}
#if USE(AUTOMATIC_TEXT_REPLACEMENT)
void Editor::uppercaseWord()
{
if (client())
client()->uppercaseWord();
}
void Editor::lowercaseWord()
{
if (client())
client()->lowercaseWord();
}
void Editor::capitalizeWord()
{
if (client())
client()->capitalizeWord();
}
void Editor::showSubstitutionsPanel()
{
if (!client()) {
LOG_ERROR("No NSSpellChecker");
return;
}
if (client()->substitutionsPanelIsShowing()) {
client()->showSubstitutionsPanel(false);
return;
}
client()->showSubstitutionsPanel(true);
}
bool Editor::substitutionsPanelIsShowing()
{
if (!client())
return false;
return client()->substitutionsPanelIsShowing();
}
void Editor::toggleSmartInsertDelete()
{
if (client())
client()->toggleSmartInsertDelete();
}
bool Editor::isAutomaticQuoteSubstitutionEnabled()
{
return client() && client()->isAutomaticQuoteSubstitutionEnabled();
}
void Editor::toggleAutomaticQuoteSubstitution()
{
if (client())
client()->toggleAutomaticQuoteSubstitution();
}
bool Editor::isAutomaticLinkDetectionEnabled()
{
return client() && client()->isAutomaticLinkDetectionEnabled();
}
void Editor::toggleAutomaticLinkDetection()
{
if (client())
client()->toggleAutomaticLinkDetection();
}
bool Editor::isAutomaticDashSubstitutionEnabled()
{
return client() && client()->isAutomaticDashSubstitutionEnabled();
}
void Editor::toggleAutomaticDashSubstitution()
{
if (client())
client()->toggleAutomaticDashSubstitution();
}
bool Editor::isAutomaticTextReplacementEnabled()
{
return client() && client()->isAutomaticTextReplacementEnabled();
}
void Editor::toggleAutomaticTextReplacement()
{
if (client())
client()->toggleAutomaticTextReplacement();
}
bool Editor::isAutomaticSpellingCorrectionEnabled()
{
return m_spellingCorrector->isAutomaticSpellingCorrectionEnabled();
}
void Editor::toggleAutomaticSpellingCorrection()
{
if (client())
client()->toggleAutomaticSpellingCorrection();
}
#endif
bool Editor::shouldEndEditing(Range* range)
{
return client() && client()->shouldEndEditing(range);
}
bool Editor::shouldBeginEditing(Range* range)
{
return client() && client()->shouldBeginEditing(range);
}
void Editor::clearUndoRedoOperations()
{
if (client())
client()->clearUndoRedoOperations();
}
bool Editor::canUndo()
{
return client() && client()->canUndo();
}
void Editor::undo()
{
if (client())
client()->undo();
}
bool Editor::canRedo()
{
return client() && client()->canRedo();
}
void Editor::redo()
{
if (client())
client()->redo();
}
void Editor::didBeginEditing()
{
if (client())
client()->didBeginEditing();
}
void Editor::didEndEditing()
{
if (client())
client()->didEndEditing();
}
void Editor::didWriteSelectionToPasteboard()
{
if (client())
client()->didWriteSelectionToPasteboard();
}
void Editor::toggleBold()
{
command("ToggleBold").execute();
}
void Editor::toggleUnderline()
{
command("ToggleUnderline").execute();
}
void Editor::setBaseWritingDirection(WritingDirection direction)
{
Node* focusedNode = frame()->document()->focusedNode();
if (focusedNode && (focusedNode->hasTagName(textareaTag) || (focusedNode->hasTagName(inputTag) && static_cast<HTMLInputElement*>(focusedNode)->isTextField()))) {
if (direction == NaturalWritingDirection)
return;
toHTMLElement(focusedNode)->setAttribute(dirAttr, direction == LeftToRightWritingDirection ? "ltr" : "rtl");
frame()->document()->updateStyleIfNeeded();
return;
}
RefPtr<CSSMutableStyleDeclaration> style = CSSMutableStyleDeclaration::create();
style->setProperty(CSSPropertyDirection, direction == LeftToRightWritingDirection ? "ltr" : direction == RightToLeftWritingDirection ? "rtl" : "inherit", false);
applyParagraphStyleToSelection(style.get(), EditActionSetWritingDirection);
}
void Editor::selectComposition()
{
RefPtr<Range> range = compositionRange();
if (!range)
return;
// The composition can start inside a composed character sequence, so we have to override checks.
// See <http://bugs.webkit.org/show_bug.cgi?id=15781>
VisibleSelection selection;
selection.setWithoutValidation(range->startPosition(), range->endPosition());
m_frame->selection()->setSelection(selection, 0);
}
void Editor::confirmComposition()
{
if (!m_compositionNode)
return;
confirmComposition(m_compositionNode->data().substring(m_compositionStart, m_compositionEnd - m_compositionStart), false);
}
void Editor::confirmCompositionWithoutDisturbingSelection()
{
if (!m_compositionNode)
return;
confirmComposition(m_compositionNode->data().substring(m_compositionStart, m_compositionEnd - m_compositionStart), true);
}
void Editor::confirmComposition(const String& text)
{
confirmComposition(text, false);
}
void Editor::confirmComposition(const String& text, bool preserveSelection)
{
UserTypingGestureIndicator typingGestureIndicator(m_frame);
setIgnoreCompositionSelectionChange(true);
VisibleSelection oldSelection = m_frame->selection()->selection();
selectComposition();
if (m_frame->selection()->isNone()) {
setIgnoreCompositionSelectionChange(false);
return;
}
// Dispatch a compositionend event to the focused node.
// We should send this event before sending a TextEvent as written in Section 6.2.2 and 6.2.3 of
// the DOM Event specification.
Node* target = m_frame->document()->focusedNode();
if (target) {
RefPtr<CompositionEvent> event = CompositionEvent::create(eventNames().compositionendEvent, m_frame->domWindow(), text);
ExceptionCode ec = 0;
target->dispatchEvent(event, ec);
}
// If text is empty, then delete the old composition here. If text is non-empty, InsertTextCommand::input
// will delete the old composition with an optimized replace operation.
if (text.isEmpty())
TypingCommand::deleteSelection(m_frame->document(), 0);
m_compositionNode = 0;
m_customCompositionUnderlines.clear();
insertTextForConfirmedComposition(text);
if (preserveSelection) {
m_frame->selection()->setSelection(oldSelection, 0);
// An open typing command that disagrees about current selection would cause issues with typing later on.
TypingCommand::closeTyping(m_lastEditCommand.get());
}
setIgnoreCompositionSelectionChange(false);
}
void Editor::setComposition(const String& text, const Vector<CompositionUnderline>& underlines, unsigned selectionStart, unsigned selectionEnd)
{
UserTypingGestureIndicator typingGestureIndicator(m_frame);
setIgnoreCompositionSelectionChange(true);
// Updates styles before setting selection for composition to prevent
// inserting the previous composition text into text nodes oddly.
// See https://bugs.webkit.org/show_bug.cgi?id=46868
m_frame->document()->updateStyleIfNeeded();
selectComposition();
if (m_frame->selection()->isNone()) {
setIgnoreCompositionSelectionChange(false);
return;
}
Node* target = m_frame->document()->focusedNode();
if (target) {
// Dispatch an appropriate composition event to the focused node.
// We check the composition status and choose an appropriate composition event since this
// function is used for three purposes:
// 1. Starting a new composition.
// Send a compositionstart event when this function creates a new composition node, i.e.
// m_compositionNode == 0 && !text.isEmpty().
// 2. Updating the existing composition node.
// Send a compositionupdate event when this function updates the existing composition
// node, i.e. m_compositionNode != 0 && !text.isEmpty().
// 3. Canceling the ongoing composition.
// Send a compositionend event when function deletes the existing composition node, i.e.
// m_compositionNode != 0 && test.isEmpty().
RefPtr<CompositionEvent> event;
if (!m_compositionNode) {
// We should send a compositionstart event only when the given text is not empty because this
// function doesn't create a composition node when the text is empty.
if (!text.isEmpty())
event = CompositionEvent::create(eventNames().compositionstartEvent, m_frame->domWindow(), text);
} else {
if (!text.isEmpty())
event = CompositionEvent::create(eventNames().compositionupdateEvent, m_frame->domWindow(), text);
else
event = CompositionEvent::create(eventNames().compositionendEvent, m_frame->domWindow(), text);
}
ExceptionCode ec = 0;
if (event.get())
target->dispatchEvent(event, ec);
}
// If text is empty, then delete the old composition here. If text is non-empty, InsertTextCommand::input
// will delete the old composition with an optimized replace operation.
if (text.isEmpty())
TypingCommand::deleteSelection(m_frame->document(), TypingCommand::PreventSpellChecking);
m_compositionNode = 0;
m_customCompositionUnderlines.clear();
if (!text.isEmpty()) {
TypingCommand::insertText(m_frame->document(), text, TypingCommand::SelectInsertedText | TypingCommand::PreventSpellChecking, TypingCommand::TextCompositionUpdate);
// Find out what node has the composition now.
Position base = m_frame->selection()->base().downstream();
Position extent = m_frame->selection()->extent();
Node* baseNode = base.deprecatedNode();
unsigned baseOffset = base.deprecatedEditingOffset();
Node* extentNode = extent.deprecatedNode();
unsigned extentOffset = extent.deprecatedEditingOffset();
if (baseNode && baseNode == extentNode && baseNode->isTextNode() && baseOffset + text.length() == extentOffset) {
m_compositionNode = static_cast<Text*>(baseNode);
m_compositionStart = baseOffset;
m_compositionEnd = extentOffset;
m_customCompositionUnderlines = underlines;
size_t numUnderlines = m_customCompositionUnderlines.size();
for (size_t i = 0; i < numUnderlines; ++i) {
m_customCompositionUnderlines[i].startOffset += baseOffset;
m_customCompositionUnderlines[i].endOffset += baseOffset;
}
if (baseNode->renderer())
baseNode->renderer()->repaint();
unsigned start = min(baseOffset + selectionStart, extentOffset);
unsigned end = min(max(start, baseOffset + selectionEnd), extentOffset);
RefPtr<Range> selectedRange = Range::create(baseNode->document(), baseNode, start, baseNode, end);
m_frame->selection()->setSelectedRange(selectedRange.get(), DOWNSTREAM, false);
}
}
setIgnoreCompositionSelectionChange(false);
}
void Editor::ignoreSpelling()
{
if (!client())
return;
RefPtr<Range> selectedRange = frame()->selection()->toNormalizedRange();
if (selectedRange)
frame()->document()->markers()->removeMarkers(selectedRange.get(), DocumentMarker::Spelling);
String text = selectedText();
ASSERT(text.length());
textChecker()->ignoreWordInSpellDocument(text);
}
void Editor::learnSpelling()
{
if (!client())
return;
// FIXME: On Mac OS X, when use "learn" button on "Spelling and Grammar" panel, we don't call this function. It should remove misspelling markers around the learned word, see <rdar://problem/5396072>.
RefPtr<Range> selectedRange = frame()->selection()->toNormalizedRange();
if (selectedRange)
frame()->document()->markers()->removeMarkers(selectedRange.get(), DocumentMarker::Spelling);
String text = selectedText();
ASSERT(text.length());
textChecker()->learnWord(text);
}
void Editor::advanceToNextMisspelling(bool startBeforeSelection)
{
ExceptionCode ec = 0;
// The basic approach is to search in two phases - from the selection end to the end of the doc, and
// then we wrap and search from the doc start to (approximately) where we started.
// Start at the end of the selection, search to edge of document. Starting at the selection end makes
// repeated "check spelling" commands work.
VisibleSelection selection(frame()->selection()->selection());
RefPtr<Range> spellingSearchRange(rangeOfContents(frame()->document()));
bool startedWithSelection = false;
if (selection.start().deprecatedNode()) {
startedWithSelection = true;
if (startBeforeSelection) {
VisiblePosition start(selection.visibleStart());
// We match AppKit's rule: Start 1 character before the selection.
VisiblePosition oneBeforeStart = start.previous();
setStart(spellingSearchRange.get(), oneBeforeStart.isNotNull() ? oneBeforeStart : start);
} else
setStart(spellingSearchRange.get(), selection.visibleEnd());
}
Position position = spellingSearchRange->startPosition();
if (!isEditablePosition(position)) {
// This shouldn't happen in very often because the Spelling menu items aren't enabled unless the
// selection is editable.
// This can happen in Mail for a mix of non-editable and editable content (like Stationary),
// when spell checking the whole document before sending the message.
// In that case the document might not be editable, but there are editable pockets that need to be spell checked.
position = firstEditablePositionAfterPositionInRoot(position, frame()->document()->documentElement()).deepEquivalent();
if (position.isNull())
return;
Position rangeCompliantPosition = position.parentAnchoredEquivalent();
spellingSearchRange->setStart(rangeCompliantPosition.deprecatedNode(), rangeCompliantPosition.deprecatedEditingOffset(), ec);
startedWithSelection = false; // won't need to wrap
}
// topNode defines the whole range we want to operate on
Node* topNode = highestEditableRoot(position);
// FIXME: lastOffsetForEditing() is wrong here if editingIgnoresContent(highestEditableRoot()) returns true (e.g. a <table>)
spellingSearchRange->setEnd(topNode, lastOffsetForEditing(topNode), ec);
// If spellingSearchRange starts in the middle of a word, advance to the next word so we start checking
// at a word boundary. Going back by one char and then forward by a word does the trick.
if (startedWithSelection) {
VisiblePosition oneBeforeStart = startVisiblePosition(spellingSearchRange.get(), DOWNSTREAM).previous();
if (oneBeforeStart.isNotNull())
setStart(spellingSearchRange.get(), endOfWord(oneBeforeStart));
// else we were already at the start of the editable node
}
if (spellingSearchRange->collapsed(ec))
return; // nothing to search in
// Get the spell checker if it is available
if (!client())
return;
// We go to the end of our first range instead of the start of it, just to be sure
// we don't get foiled by any word boundary problems at the start. It means we might
// do a tiny bit more searching.
Node* searchEndNodeAfterWrap = spellingSearchRange->endContainer(ec);
int searchEndOffsetAfterWrap = spellingSearchRange->endOffset(ec);
int misspellingOffset = 0;
GrammarDetail grammarDetail;
int grammarPhraseOffset = 0;
RefPtr<Range> grammarSearchRange;
String badGrammarPhrase;
String misspelledWord;
#if USE(UNIFIED_TEXT_CHECKING)
grammarSearchRange = spellingSearchRange->cloneRange(ec);
bool isSpelling = true;
int foundOffset = 0;
String foundItem = TextCheckingHelper(client(), spellingSearchRange).findFirstMisspellingOrBadGrammar(isGrammarCheckingEnabled(), isSpelling, foundOffset, grammarDetail);
if (isSpelling) {
misspelledWord = foundItem;
misspellingOffset = foundOffset;
} else {
badGrammarPhrase = foundItem;
grammarPhraseOffset = foundOffset;
}
#else
RefPtr<Range> firstMisspellingRange;
misspelledWord = TextCheckingHelper(client(), spellingSearchRange).findFirstMisspelling(misspellingOffset, false, firstMisspellingRange);
#if USE(GRAMMAR_CHECKING)
// Search for bad grammar that occurs prior to the next misspelled word (if any)
grammarSearchRange = spellingSearchRange->cloneRange(ec);
if (!misspelledWord.isEmpty()) {
// Stop looking at start of next misspelled word
CharacterIterator chars(grammarSearchRange.get());
chars.advance(misspellingOffset);
grammarSearchRange->setEnd(chars.range()->startContainer(ec), chars.range()->startOffset(ec), ec);
}
if (isGrammarCheckingEnabled())
badGrammarPhrase = TextCheckingHelper(client(), grammarSearchRange).findFirstBadGrammar(grammarDetail, grammarPhraseOffset, false);
#endif
#endif
// If we found neither bad grammar nor a misspelled word, wrap and try again (but don't bother if we started at the beginning of the
// block rather than at a selection).
if (startedWithSelection && !misspelledWord && !badGrammarPhrase) {
spellingSearchRange->setStart(topNode, 0, ec);
// going until the end of the very first chunk we tested is far enough
spellingSearchRange->setEnd(searchEndNodeAfterWrap, searchEndOffsetAfterWrap, ec);
#if USE(UNIFIED_TEXT_CHECKING)
grammarSearchRange = spellingSearchRange->cloneRange(ec);
foundItem = TextCheckingHelper(client(), spellingSearchRange).findFirstMisspellingOrBadGrammar(isGrammarCheckingEnabled(), isSpelling, foundOffset, grammarDetail);
if (isSpelling) {
misspelledWord = foundItem;
misspellingOffset = foundOffset;
} else {
badGrammarPhrase = foundItem;
grammarPhraseOffset = foundOffset;
}
#else
misspelledWord = TextCheckingHelper(client(), spellingSearchRange).findFirstMisspelling(misspellingOffset, false, firstMisspellingRange);
#if USE(GRAMMAR_CHECKING)
grammarSearchRange = spellingSearchRange->cloneRange(ec);
if (!misspelledWord.isEmpty()) {
// Stop looking at start of next misspelled word
CharacterIterator chars(grammarSearchRange.get());
chars.advance(misspellingOffset);
grammarSearchRange->setEnd(chars.range()->startContainer(ec), chars.range()->startOffset(ec), ec);
}
if (isGrammarCheckingEnabled())
badGrammarPhrase = TextCheckingHelper(client(), grammarSearchRange).findFirstBadGrammar(grammarDetail, grammarPhraseOffset, false);
#endif
#endif
}
if (!badGrammarPhrase.isEmpty()) {
ASSERT(WTF_USE_GRAMMAR_CHECKING);
// We found bad grammar. Since we only searched for bad grammar up to the first misspelled word, the bad grammar
// takes precedence and we ignore any potential misspelled word. Select the grammar detail, update the spelling
// panel, and store a marker so we draw the green squiggle later.
ASSERT(badGrammarPhrase.length() > 0);
ASSERT(grammarDetail.location != -1 && grammarDetail.length > 0);
// FIXME 4859190: This gets confused with doubled punctuation at the end of a paragraph
RefPtr<Range> badGrammarRange = TextIterator::subrange(grammarSearchRange.get(), grammarPhraseOffset + grammarDetail.location, grammarDetail.length);
frame()->selection()->setSelection(VisibleSelection(badGrammarRange.get(), SEL_DEFAULT_AFFINITY));
frame()->selection()->revealSelection();
client()->updateSpellingUIWithGrammarString(badGrammarPhrase, grammarDetail);
frame()->document()->markers()->addMarker(badGrammarRange.get(), DocumentMarker::Grammar, grammarDetail.userDescription);
} else if (!misspelledWord.isEmpty()) {
// We found a misspelling, but not any earlier bad grammar. Select the misspelling, update the spelling panel, and store
// a marker so we draw the red squiggle later.
RefPtr<Range> misspellingRange = TextIterator::subrange(spellingSearchRange.get(), misspellingOffset, misspelledWord.length());
frame()->selection()->setSelection(VisibleSelection(misspellingRange.get(), DOWNSTREAM));
frame()->selection()->revealSelection();
client()->updateSpellingUIWithMisspelledWord(misspelledWord);
frame()->document()->markers()->addMarker(misspellingRange.get(), DocumentMarker::Spelling);
}
}
bool Editor::isSelectionMisspelled()
{
String selectedString = selectedText();
int length = selectedString.length();
if (!length)
return false;
if (!client())
return false;
int misspellingLocation = -1;
int misspellingLength = 0;
textChecker()->checkSpellingOfString(selectedString.characters(), length, &misspellingLocation, &misspellingLength);
// The selection only counts as misspelled if the selected text is exactly one misspelled word
if (misspellingLength != length)
return false;
// Update the spelling panel to be displaying this error (whether or not the spelling panel is on screen).
// This is necessary to make a subsequent call to [NSSpellChecker ignoreWord:inSpellDocumentWithTag:] work
// correctly; that call behaves differently based on whether the spelling panel is displaying a misspelling
// or a grammar error.
client()->updateSpellingUIWithMisspelledWord(selectedString);
return true;
}
bool Editor::isSelectionUngrammatical()
{
#if USE(GRAMMAR_CHECKING)
Vector<String> ignoredGuesses;
return TextCheckingHelper(client(), frame()->selection()->toNormalizedRange()).isUngrammatical(ignoredGuesses);
#else
return false;
#endif
}
Vector<String> Editor::guessesForUngrammaticalSelection()
{
#if USE(GRAMMAR_CHECKING)
Vector<String> guesses;
// Ignore the result of isUngrammatical; we just want the guesses, whether or not there are any
TextCheckingHelper(client(), frame()->selection()->toNormalizedRange()).isUngrammatical(guesses);
return guesses;
#else
return Vector<String>();
#endif
}
Vector<String> Editor::guessesForMisspelledSelection()
{
String selectedString = selectedText();
ASSERT(selectedString.length());
Vector<String> guesses;
if (client())
textChecker()->getGuessesForWord(selectedString, String(), guesses);
return guesses;
}
Vector<String> Editor::guessesForMisspelledOrUngrammaticalSelection(bool& misspelled, bool& ungrammatical)
{
#if USE(UNIFIED_TEXT_CHECKING)
return TextCheckingHelper(client(), frame()->selection()->toNormalizedRange()).guessesForMisspelledOrUngrammaticalRange(isGrammarCheckingEnabled(), misspelled, ungrammatical);
#else
misspelled = isSelectionMisspelled();
if (misspelled) {
ungrammatical = false;
return guessesForMisspelledSelection();
}
if (isGrammarCheckingEnabled() && isSelectionUngrammatical()) {
ungrammatical = true;
return guessesForUngrammaticalSelection();
}
ungrammatical = false;
return Vector<String>();
#endif
}
void Editor::showSpellingGuessPanel()
{
if (!client()) {
LOG_ERROR("No NSSpellChecker");
return;
}
#ifndef BUILDING_ON_TIGER
// Post-Tiger, this menu item is a show/hide toggle, to match AppKit. Leave Tiger behavior alone
// to match rest of OS X.
if (client()->spellingUIIsShowing()) {
client()->showSpellingUI(false);
return;
}
#endif
advanceToNextMisspelling(true);
client()->showSpellingUI(true);
}
bool Editor::spellingPanelIsShowing()
{
if (!client())
return false;
return client()->spellingUIIsShowing();
}
void Editor::clearMisspellingsAndBadGrammar(const VisibleSelection &movingSelection)
{
RefPtr<Range> selectedRange = movingSelection.toNormalizedRange();
if (selectedRange) {
frame()->document()->markers()->removeMarkers(selectedRange.get(), DocumentMarker::Spelling);
frame()->document()->markers()->removeMarkers(selectedRange.get(), DocumentMarker::Grammar);
}
}
void Editor::markMisspellingsAndBadGrammar(const VisibleSelection &movingSelection)
{
bool markSpelling = isContinuousSpellCheckingEnabled();
bool markGrammar = markSpelling && isGrammarCheckingEnabled();
if (markSpelling) {
RefPtr<Range> unusedFirstMisspellingRange;
markMisspellings(movingSelection, unusedFirstMisspellingRange);
}
if (markGrammar)
markBadGrammar(movingSelection);
}
void Editor::markMisspellingsAfterTypingToWord(const VisiblePosition &wordStart, const VisibleSelection& selectionAfterTyping, bool doReplacement)
{
#if USE(UNIFIED_TEXT_CHECKING)
m_spellingCorrector->applyPendingCorrection(selectionAfterTyping);
TextCheckingOptions textCheckingOptions = 0;
if (isContinuousSpellCheckingEnabled())
textCheckingOptions |= MarkSpelling;
#if USE(AUTOMATIC_TEXT_REPLACEMENT)
if (doReplacement
&& (isAutomaticQuoteSubstitutionEnabled()
|| isAutomaticLinkDetectionEnabled()
|| isAutomaticDashSubstitutionEnabled()
|| isAutomaticTextReplacementEnabled()
|| ((textCheckingOptions & MarkSpelling) && isAutomaticSpellingCorrectionEnabled())))
textCheckingOptions |= PerformReplacement;
#endif
if (!textCheckingOptions & (MarkSpelling | PerformReplacement))
return;
if (isGrammarCheckingEnabled())
textCheckingOptions |= MarkGrammar;
VisibleSelection adjacentWords = VisibleSelection(startOfWord(wordStart, LeftWordIfOnBoundary), endOfWord(wordStart, RightWordIfOnBoundary));
if (textCheckingOptions & MarkGrammar) {
VisibleSelection selectedSentence = VisibleSelection(startOfSentence(wordStart), endOfSentence(wordStart));
markAllMisspellingsAndBadGrammarInRanges(textCheckingOptions, adjacentWords.toNormalizedRange().get(), selectedSentence.toNormalizedRange().get());
} else {
markAllMisspellingsAndBadGrammarInRanges(textCheckingOptions, adjacentWords.toNormalizedRange().get(), adjacentWords.toNormalizedRange().get());
}
#else
UNUSED_PARAM(selectionAfterTyping);
UNUSED_PARAM(doReplacement);
if (!isContinuousSpellCheckingEnabled())
return;
// Check spelling of one word
RefPtr<Range> misspellingRange;
markMisspellings(VisibleSelection(startOfWord(wordStart, LeftWordIfOnBoundary), endOfWord(wordStart, RightWordIfOnBoundary)), misspellingRange);
// Autocorrect the misspelled word.
if (!misspellingRange)
return;
// Get the misspelled word.
const String misspelledWord = plainText(misspellingRange.get());
String autocorrectedString = textChecker()->getAutoCorrectSuggestionForMisspelledWord(misspelledWord);
// If autocorrected word is non empty, replace the misspelled word by this word.
if (!autocorrectedString.isEmpty()) {
VisibleSelection newSelection(misspellingRange.get(), DOWNSTREAM);
if (newSelection != frame()->selection()->selection()) {
if (!frame()->selection()->shouldChangeSelection(newSelection))
return;
frame()->selection()->setSelection(newSelection);
}
if (!frame()->editor()->shouldInsertText(autocorrectedString, misspellingRange.get(), EditorInsertActionTyped))
return;
frame()->editor()->replaceSelectionWithText(autocorrectedString, false, false);
// Reset the charet one character further.
frame()->selection()->moveTo(frame()->selection()->end());
frame()->selection()->modify(SelectionController::AlterationMove, DirectionForward, CharacterGranularity);
}
if (!isGrammarCheckingEnabled())
return;
// Check grammar of entire sentence
markBadGrammar(VisibleSelection(startOfSentence(wordStart), endOfSentence(wordStart)));
#endif
}
void Editor::markMisspellingsOrBadGrammar(const VisibleSelection& selection, bool checkSpelling, RefPtr<Range>& firstMisspellingRange)
{
// This function is called with a selection already expanded to word boundaries.
// Might be nice to assert that here.
// This function is used only for as-you-type checking, so if that's off we do nothing. Note that
// grammar checking can only be on if spell checking is also on.
if (!isContinuousSpellCheckingEnabled())
return;
RefPtr<Range> searchRange(selection.toNormalizedRange());
if (!searchRange)
return;
// If we're not in an editable node, bail.
Node* editableNode = searchRange->startContainer();
if (!editableNode || !editableNode->rendererIsEditable())
return;
if (!isSpellCheckingEnabledFor(editableNode))
return;
// Get the spell checker if it is available
if (!client())
return;
TextCheckingHelper checker(client(), searchRange);
if (checkSpelling)
checker.markAllMisspellings(firstMisspellingRange);
else {
ASSERT(WTF_USE_GRAMMAR_CHECKING);
if (isGrammarCheckingEnabled())
checker.markAllBadGrammar();
}
}
bool Editor::isSpellCheckingEnabledFor(Node* node) const
{
if (!node)
return false;
const Element* focusedElement = node->isElementNode() ? toElement(node) : node->parentElement();
if (!focusedElement)
return false;
return focusedElement->isSpellCheckingEnabled();
}
bool Editor::isSpellCheckingEnabledInFocusedNode() const
{
return isSpellCheckingEnabledFor(m_frame->selection()->start().deprecatedNode());
}
void Editor::markMisspellings(const VisibleSelection& selection, RefPtr<Range>& firstMisspellingRange)
{
markMisspellingsOrBadGrammar(selection, true, firstMisspellingRange);
}
void Editor::markBadGrammar(const VisibleSelection& selection)
{
ASSERT(WTF_USE_GRAMMAR_CHECKING);
RefPtr<Range> firstMisspellingRange;
markMisspellingsOrBadGrammar(selection, false, firstMisspellingRange);
}
void Editor::markAllMisspellingsAndBadGrammarInRanges(TextCheckingOptions textCheckingOptions, Range* spellingRange, Range* grammarRange)
{
#if USE(UNIFIED_TEXT_CHECKING)
// There shouldn't be pending autocorrection at this moment.
ASSERT(!m_spellingCorrector->hasPendingCorrection());
bool shouldMarkSpelling = textCheckingOptions & MarkSpelling;
bool shouldMarkGrammar = textCheckingOptions & MarkGrammar;
bool shouldPerformReplacement = textCheckingOptions & PerformReplacement;
bool shouldShowCorrectionPanel = textCheckingOptions & ShowCorrectionPanel;
bool shouldCheckForCorrection = shouldShowCorrectionPanel || (textCheckingOptions & CheckForCorrection);
// This function is called with selections already expanded to word boundaries.
ExceptionCode ec = 0;
if (!client() || !spellingRange || (shouldMarkGrammar && !grammarRange))
return;
// If we're not in an editable node, bail.
Node* editableNode = spellingRange->startContainer();
if (!editableNode || !editableNode->rendererIsEditable())
return;
if (!isSpellCheckingEnabledFor(editableNode))
return;
// Expand the range to encompass entire paragraphs, since text checking needs that much context.
int selectionOffset = 0;
int ambiguousBoundaryOffset = -1;
bool selectionChanged = false;
bool restoreSelectionAfterChange = false;
bool adjustSelectionForParagraphBoundaries = false;
TextCheckingParagraph spellingParagraph(spellingRange);
TextCheckingParagraph grammarParagraph(shouldMarkGrammar ? grammarRange : 0);
if (shouldMarkGrammar ? (spellingParagraph.isRangeEmpty() && grammarParagraph.isEmpty()) : spellingParagraph.isEmpty())
return;
if (shouldPerformReplacement || shouldMarkSpelling || shouldCheckForCorrection) {
if (m_frame->selection()->selectionType() == VisibleSelection::CaretSelection) {
// Attempt to save the caret position so we can restore it later if needed
Position caretPosition = m_frame->selection()->end();
int offset = spellingParagraph.offsetTo(caretPosition, ec);
if (!ec) {
selectionOffset = offset;
restoreSelectionAfterChange = true;
if (selectionOffset > 0 && (selectionOffset > spellingParagraph.textLength() || spellingParagraph.textCharAt(selectionOffset - 1) == newlineCharacter))
adjustSelectionForParagraphBoundaries = true;
if (selectionOffset > 0 && selectionOffset <= spellingParagraph.textLength() && isAmbiguousBoundaryCharacter(spellingParagraph.textCharAt(selectionOffset - 1)))
ambiguousBoundaryOffset = selectionOffset - 1;
}
}
}
Vector<TextCheckingResult> results;
if (shouldMarkGrammar)
textChecker()->checkTextOfParagraph(grammarParagraph.textCharacters(), grammarParagraph.textLength(),
textCheckingTypeMaskFor(textCheckingOptions), results);
else
textChecker()->checkTextOfParagraph(spellingParagraph.textCharacters(), spellingParagraph.textLength(),
textCheckingTypeMaskFor(textCheckingOptions), results);
// If this checking is only for showing correction panel, we shouldn't bother to mark misspellings.
if (shouldShowCorrectionPanel)
shouldMarkSpelling = false;
int offsetDueToReplacement = 0;
for (unsigned i = 0; i < results.size(); i++) {
int spellingRangeEndOffset = spellingParagraph.checkingEnd() + offsetDueToReplacement;
const TextCheckingResult* result = &results[i];
int resultLocation = result->location + offsetDueToReplacement;
int resultLength = result->length;
bool resultEndsAtAmbiguousBoundary = ambiguousBoundaryOffset >= 0 && resultLocation + resultLength == ambiguousBoundaryOffset;
// Only mark misspelling if:
// 1. Current text checking isn't done for autocorrection, in which case shouldMarkSpelling is false.
// 2. Result falls within spellingRange.
// 3. The word in question doesn't end at an ambiguous boundary. For instance, we would not mark
// "wouldn'" as misspelled right after apostrophe is typed.
if (shouldMarkSpelling && result->type == TextCheckingTypeSpelling && resultLocation >= spellingParagraph.checkingStart() && resultLocation + resultLength <= spellingRangeEndOffset && !resultEndsAtAmbiguousBoundary) {
ASSERT(resultLength > 0 && resultLocation >= 0);
RefPtr<Range> misspellingRange = spellingParagraph.subrange(resultLocation, resultLength);
if (!m_spellingCorrector->isSpellingMarkerAllowed(misspellingRange))
continue;
misspellingRange->startContainer(ec)->document()->markers()->addMarker(misspellingRange.get(), DocumentMarker::Spelling);
} else if (shouldMarkGrammar && result->type == TextCheckingTypeGrammar && grammarParagraph.checkingRangeCovers(resultLocation, resultLength)) {
ASSERT(resultLength > 0 && resultLocation >= 0);
for (unsigned j = 0; j < result->details.size(); j++) {
const GrammarDetail* detail = &result->details[j];
ASSERT(detail->length > 0 && detail->location >= 0);
if (grammarParagraph.checkingRangeCovers(resultLocation + detail->location, detail->length)) {
RefPtr<Range> badGrammarRange = grammarParagraph.subrange(resultLocation + detail->location, detail->length);
grammarRange->startContainer(ec)->document()->markers()->addMarker(badGrammarRange.get(), DocumentMarker::Grammar, detail->userDescription);
}
}
} else if (resultLocation + resultLength <= spellingRangeEndOffset && resultLocation + resultLength >= spellingParagraph.checkingStart()
&& (result->type == TextCheckingTypeLink
|| result->type == TextCheckingTypeQuote
|| result->type == TextCheckingTypeDash
|| result->type == TextCheckingTypeReplacement
|| result->type == TextCheckingTypeCorrection)) {
// In this case the result range just has to touch the spelling range, so we can handle replacing non-word text such as punctuation.
ASSERT(resultLength > 0 && resultLocation >= 0);
if (shouldShowCorrectionPanel && (resultLocation + resultLength < spellingRangeEndOffset || result->type != TextCheckingTypeCorrection))
continue;
int replacementLength = result->replacement.length();
// Apply replacement if:
// 1. The replacement length is non-zero.
// 2. The result doesn't end at an ambiguous boundary.
// (FIXME: this is required until 6853027 is fixed and text checking can do this for us
bool doReplacement = replacementLength > 0 && !resultEndsAtAmbiguousBoundary;
RefPtr<Range> rangeToReplace = spellingParagraph.subrange(resultLocation, resultLength);
VisibleSelection selectionToReplace(rangeToReplace.get(), DOWNSTREAM);
// adding links should be done only immediately after they are typed
if (result->type == TextCheckingTypeLink && selectionOffset > resultLocation + resultLength + 1)
continue;
String replacedString;
// Don't correct spelling in an already-corrected word.
if (result->type == TextCheckingTypeCorrection) {
replacedString = plainText(rangeToReplace.get());
DocumentMarkerController* markers = m_frame->document()->markers();
if (markers->hasMarkers(rangeToReplace.get(), DocumentMarker::Replacement)) {
doReplacement = false;
m_spellingCorrector->recordSpellcheckerResponseForModifiedCorrection(rangeToReplace.get(), replacedString, result->replacement);
} else if (markers->hasMarkers(rangeToReplace.get(), DocumentMarker::RejectedCorrection))
doReplacement = false;
}
if (!(shouldPerformReplacement || shouldShowCorrectionPanel) || !doReplacement)
continue;
if (shouldShowCorrectionPanel) {
ASSERT(SUPPORT_AUTOCORRECTION_PANEL);
// shouldShowCorrectionPanel can be true only when the panel is available.
if (resultLocation + resultLength == spellingRangeEndOffset) {
// We only show the correction panel on the last word.
m_spellingCorrector->show(rangeToReplace, result->replacement);
break;
}
// If this function is called for showing correction panel, we ignore other correction or replacement.
continue;
}
if (selectionToReplace != m_frame->selection()->selection()) {
if (!m_frame->selection()->shouldChangeSelection(selectionToReplace))
continue;
}
if (result->type == TextCheckingTypeLink) {
m_frame->selection()->setSelection(selectionToReplace);
selectionChanged = true;
restoreSelectionAfterChange = false;
if (canEditRichly())
applyCommand(CreateLinkCommand::create(m_frame->document(), result->replacement));
} else if (canEdit() && shouldInsertText(result->replacement, rangeToReplace.get(), EditorInsertActionTyped)) {
if (result->type == TextCheckingTypeCorrection)
applyCommand(SpellingCorrectionCommand::create(rangeToReplace, result->replacement));
else {
m_frame->selection()->setSelection(selectionToReplace);
replaceSelectionWithText(result->replacement, false, false);
}
if (AXObjectCache::accessibilityEnabled()) {
if (Element* root = m_frame->selection()->selection().rootEditableElement())
m_frame->document()->axObjectCache()->postNotification(root->renderer(), AXObjectCache::AXAutocorrectionOccured, true);
}
selectionChanged = true;
offsetDueToReplacement += replacementLength - resultLength;
if (resultLocation < selectionOffset) {
selectionOffset += replacementLength - resultLength;
if (ambiguousBoundaryOffset >= 0)
ambiguousBoundaryOffset = selectionOffset - 1;
}
// Add a marker so that corrections can easily be undone and won't be re-corrected.
if (result->type == TextCheckingTypeCorrection)
m_spellingCorrector->markCorrection(spellingParagraph.subrange(resultLocation, replacementLength), replacedString);
}
}
}
if (selectionChanged) {
// Restore the caret position if we have made any replacements
spellingParagraph.expandRangeToNextEnd();
if (restoreSelectionAfterChange && selectionOffset >= 0 && selectionOffset <= spellingParagraph.rangeLength()) {
RefPtr<Range> selectionRange = spellingParagraph.subrange(0, selectionOffset);
m_frame->selection()->moveTo(selectionRange->endPosition(), DOWNSTREAM);
if (adjustSelectionForParagraphBoundaries)
m_frame->selection()->modify(SelectionController::AlterationMove, DirectionForward, CharacterGranularity);
} else {
// If this fails for any reason, the fallback is to go one position beyond the last replacement
m_frame->selection()->moveTo(m_frame->selection()->end());
m_frame->selection()->modify(SelectionController::AlterationMove, DirectionForward, CharacterGranularity);
}
}
#else
ASSERT_NOT_REACHED();
UNUSED_PARAM(textCheckingOptions);
UNUSED_PARAM(spellingRange);
UNUSED_PARAM(grammarRange);
#endif // USE(UNIFIED_TEXT_CHECKING)
}
void Editor::changeBackToReplacedString(const String& replacedString)
{
#if USE(UNIFIED_TEXT_CHECKING)
if (replacedString.isEmpty())
return;
RefPtr<Range> selection = selectedRange();
if (!shouldInsertText(replacedString, selection.get(), EditorInsertActionPasted))
return;
m_spellingCorrector->recordAutocorrectionResponseReversed(replacedString, selection);
TextCheckingParagraph paragraph(selection);
replaceSelectionWithText(replacedString, false, false);
RefPtr<Range> changedRange = paragraph.subrange(paragraph.checkingStart(), replacedString.length());
changedRange->startContainer()->document()->markers()->addMarker(changedRange.get(), DocumentMarker::Replacement, String());
m_spellingCorrector->markReversed(changedRange.get());
#else
ASSERT_NOT_REACHED();
UNUSED_PARAM(replacedString);
#endif // USE(UNIFIED_TEXT_CHECKING)
}
void Editor::markMisspellingsAndBadGrammar(const VisibleSelection& spellingSelection, bool markGrammar, const VisibleSelection& grammarSelection)
{
#if USE(UNIFIED_TEXT_CHECKING)
if (!isContinuousSpellCheckingEnabled())
return;
TextCheckingOptions textCheckingOptions = MarkSpelling | CheckForCorrection;
if (markGrammar && isGrammarCheckingEnabled())
textCheckingOptions |= MarkGrammar;
markAllMisspellingsAndBadGrammarInRanges(textCheckingOptions, spellingSelection.toNormalizedRange().get(), grammarSelection.toNormalizedRange().get());
#else
RefPtr<Range> firstMisspellingRange;
markMisspellings(spellingSelection, firstMisspellingRange);
if (markGrammar)
markBadGrammar(grammarSelection);
#endif
}
void Editor::unappliedSpellCorrection(const VisibleSelection& selectionOfCorrected, const String& corrected, const String& correction)
{
m_spellingCorrector->respondToUnappliedSpellCorrection(selectionOfCorrected, corrected, correction);
}
void Editor::updateMarkersForWordsAffectedByEditing(bool doNotRemoveIfSelectionAtWordBoundary)
{
if (!m_spellingCorrector->shouldRemoveMarkersUponEditing())
return;
// We want to remove the markers from a word if an editing command will change the word. This can happen in one of
// several scenarios:
// 1. Insert in the middle of a word.
// 2. Appending non whitespace at the beginning of word.
// 3. Appending non whitespace at the end of word.
// Note that, appending only whitespaces at the beginning or end of word won't change the word, so we don't need to
// remove the markers on that word.
// Of course, if current selection is a range, we potentially will edit two words that fall on the boundaries of
// selection, and remove words between the selection boundaries.
//
VisiblePosition startOfSelection = frame()->selection()->selection().start();
VisiblePosition endOfSelection = frame()->selection()->selection().end();
if (startOfSelection.isNull())
return;
// First word is the word that ends after or on the start of selection.
VisiblePosition startOfFirstWord = startOfWord(startOfSelection, LeftWordIfOnBoundary);
VisiblePosition endOfFirstWord = endOfWord(startOfSelection, LeftWordIfOnBoundary);
// Last word is the word that begins before or on the end of selection
VisiblePosition startOfLastWord = startOfWord(endOfSelection, RightWordIfOnBoundary);
VisiblePosition endOfLastWord = endOfWord(endOfSelection, RightWordIfOnBoundary);
if (startOfFirstWord.isNull()) {
startOfFirstWord = startOfWord(startOfSelection, RightWordIfOnBoundary);
endOfFirstWord = endOfWord(startOfSelection, RightWordIfOnBoundary);
}
if (endOfLastWord.isNull()) {
startOfLastWord = startOfWord(endOfSelection, LeftWordIfOnBoundary);
endOfLastWord = endOfWord(endOfSelection, LeftWordIfOnBoundary);
}
// If doNotRemoveIfSelectionAtWordBoundary is true, and first word ends at the start of selection,
// we choose next word as the first word.
if (doNotRemoveIfSelectionAtWordBoundary && endOfFirstWord == startOfSelection) {
startOfFirstWord = nextWordPosition(startOfFirstWord);
endOfFirstWord = endOfWord(startOfFirstWord, RightWordIfOnBoundary);
if (startOfFirstWord == endOfSelection)
return;
}
// If doNotRemoveIfSelectionAtWordBoundary is true, and last word begins at the end of selection,
// we choose previous word as the last word.
if (doNotRemoveIfSelectionAtWordBoundary && startOfLastWord == endOfSelection) {
startOfLastWord = previousWordPosition(startOfLastWord);
endOfLastWord = endOfWord(startOfLastWord, RightWordIfOnBoundary);
if (endOfLastWord == startOfSelection)
return;
}
if (startOfFirstWord.isNull() || endOfFirstWord.isNull() || startOfLastWord.isNull() || endOfLastWord.isNull())
return;
// Now we remove markers on everything between startOfFirstWord and endOfLastWord.
// However, if an autocorrection change a single word to multiple words, we want to remove correction mark from all the
// resulted words even we only edit one of them. For example, assuming autocorrection changes "avantgarde" to "avant
// garde", we will have CorrectionIndicator marker on both words and on the whitespace between them. If we then edit garde,
// we would like to remove the marker from word "avant" and whitespace as well. So we need to get the continous range of
// of marker that contains the word in question, and remove marker on that whole range.
Document* document = m_frame->document();
RefPtr<Range> wordRange = Range::create(document, startOfFirstWord.deepEquivalent(), endOfLastWord.deepEquivalent());
document->markers()->removeMarkers(wordRange.get(), DocumentMarker::Spelling | DocumentMarker::CorrectionIndicator | DocumentMarker::SpellCheckingExemption, DocumentMarkerController::RemovePartiallyOverlappingMarker);
document->markers()->clearDescriptionOnMarkersIntersectingRange(wordRange.get(), DocumentMarker::Replacement);
}
PassRefPtr<Range> Editor::rangeForPoint(const IntPoint& windowPoint)
{
Document* document = m_frame->documentAtPoint(windowPoint);
if (!document)
return 0;
Frame* frame = document->frame();
ASSERT(frame);
FrameView* frameView = frame->view();
if (!frameView)
return 0;
IntPoint framePoint = frameView->windowToContents(windowPoint);
VisibleSelection selection(frame->visiblePositionForPoint(framePoint));
return avoidIntersectionWithNode(selection.toNormalizedRange().get(), m_deleteButtonController->containerElement());
}
void Editor::revealSelectionAfterEditingOperation()
{
if (m_ignoreCompositionSelectionChange)
return;
m_frame->selection()->revealSelection(ScrollAlignment::alignToEdgeIfNeeded);
}
void Editor::setIgnoreCompositionSelectionChange(bool ignore)
{
if (m_ignoreCompositionSelectionChange == ignore)
return;
m_ignoreCompositionSelectionChange = ignore;
if (!ignore)
revealSelectionAfterEditingOperation();
}
PassRefPtr<Range> Editor::compositionRange() const
{
if (!m_compositionNode)
return 0;
unsigned length = m_compositionNode->length();
unsigned start = min(m_compositionStart, length);
unsigned end = min(max(start, m_compositionEnd), length);
if (start >= end)
return 0;
return Range::create(m_compositionNode->document(), m_compositionNode.get(), start, m_compositionNode.get(), end);
}
bool Editor::getCompositionSelection(unsigned& selectionStart, unsigned& selectionEnd) const
{
if (!m_compositionNode)
return false;
Position start = m_frame->selection()->start();
if (start.deprecatedNode() != m_compositionNode)
return false;
Position end = m_frame->selection()->end();
if (end.deprecatedNode() != m_compositionNode)
return false;
if (static_cast<unsigned>(start.deprecatedEditingOffset()) < m_compositionStart)
return false;
if (static_cast<unsigned>(end.deprecatedEditingOffset()) > m_compositionEnd)
return false;
selectionStart = start.deprecatedEditingOffset() - m_compositionStart;
selectionEnd = start.deprecatedEditingOffset() - m_compositionEnd;
return true;
}
void Editor::transpose()
{
if (!canEdit())
return;
VisibleSelection selection = m_frame->selection()->selection();
if (!selection.isCaret())
return;
// Make a selection that goes back one character and forward two characters.
VisiblePosition caret = selection.visibleStart();
VisiblePosition next = isEndOfParagraph(caret) ? caret : caret.next();
VisiblePosition previous = next.previous();
if (next == previous)
return;
previous = previous.previous();
if (!inSameParagraph(next, previous))
return;
RefPtr<Range> range = makeRange(previous, next);
if (!range)
return;
VisibleSelection newSelection(range.get(), DOWNSTREAM);
// Transpose the two characters.
String text = plainText(range.get());
if (text.length() != 2)
return;
String transposed = text.right(1) + text.left(1);
// Select the two characters.
if (newSelection != m_frame->selection()->selection()) {
if (!m_frame->selection()->shouldChangeSelection(newSelection))
return;
m_frame->selection()->setSelection(newSelection);
}
// Insert the transposed characters.
if (!shouldInsertText(transposed, range.get(), EditorInsertActionTyped))
return;
replaceSelectionWithText(transposed, false, false);
}
void Editor::addToKillRing(Range* range, bool prepend)
{
if (m_shouldStartNewKillRingSequence)
killRing()->startNewSequence();
String text = plainText(range);
if (prepend)
killRing()->prepend(text);
else
killRing()->append(text);
m_shouldStartNewKillRingSequence = false;
}
void Editor::startCorrectionPanelTimer()
{
m_spellingCorrector->startCorrectionPanelTimer(CorrectionPanelInfo::PanelTypeCorrection);
}
void Editor::handleCorrectionPanelResult(const String& correction)
{
m_spellingCorrector->handleCorrectionPanelResult(correction);
}
void Editor::dismissCorrectionPanelAsIgnored()
{
m_spellingCorrector->dismiss(ReasonForDismissingCorrectionPanelIgnored);
}
bool Editor::insideVisibleArea(const IntPoint& point) const
{
if (m_frame->excludeFromTextSearch())
return false;
// Right now, we only check the visibility of a point for disconnected frames. For all other
// frames, we assume visibility.
Frame* frame = m_frame->isDisconnected() ? m_frame : m_frame->tree()->top(true);
if (!frame->isDisconnected())
return true;
RenderPart* renderer = frame->ownerRenderer();
if (!renderer)
return false;
RenderBlock* container = renderer->containingBlock();
if (!(container->style()->overflowX() == OHIDDEN || container->style()->overflowY() == OHIDDEN))
return true;
IntRect rectInPageCoords = container->overflowClipRect(0, 0);
IntRect rectInFrameCoords = IntRect(renderer->x() * -1, renderer->y() * -1,
rectInPageCoords.width(), rectInPageCoords.height());
return rectInFrameCoords.contains(point);
}
bool Editor::insideVisibleArea(Range* range) const
{
if (!range)
return true;
if (m_frame->excludeFromTextSearch())
return false;
// Right now, we only check the visibility of a range for disconnected frames. For all other
// frames, we assume visibility.
Frame* frame = m_frame->isDisconnected() ? m_frame : m_frame->tree()->top(true);
if (!frame->isDisconnected())
return true;
RenderPart* renderer = frame->ownerRenderer();
if (!renderer)
return false;
RenderBlock* container = renderer->containingBlock();
if (!(container->style()->overflowX() == OHIDDEN || container->style()->overflowY() == OHIDDEN))
return true;
IntRect rectInPageCoords = container->overflowClipRect(0, 0);
IntRect rectInFrameCoords = IntRect(renderer->x() * -1, renderer->y() * -1,
rectInPageCoords.width(), rectInPageCoords.height());
IntRect resultRect = range->boundingBox();
return rectInFrameCoords.contains(resultRect);
}
PassRefPtr<Range> Editor::firstVisibleRange(const String& target, FindOptions options)
{
RefPtr<Range> searchRange(rangeOfContents(m_frame->document()));
RefPtr<Range> resultRange = findPlainText(searchRange.get(), target, options & ~Backwards);
ExceptionCode ec = 0;
while (!insideVisibleArea(resultRange.get())) {
searchRange->setStartAfter(resultRange->endContainer(), ec);
if (searchRange->startContainer() == searchRange->endContainer())
return Range::create(m_frame->document());
resultRange = findPlainText(searchRange.get(), target, options & ~Backwards);
}
return resultRange;
}
PassRefPtr<Range> Editor::lastVisibleRange(const String& target, FindOptions options)
{
RefPtr<Range> searchRange(rangeOfContents(m_frame->document()));
RefPtr<Range> resultRange = findPlainText(searchRange.get(), target, options | Backwards);
ExceptionCode ec = 0;
while (!insideVisibleArea(resultRange.get())) {
searchRange->setEndBefore(resultRange->startContainer(), ec);
if (searchRange->startContainer() == searchRange->endContainer())
return Range::create(m_frame->document());
resultRange = findPlainText(searchRange.get(), target, options | Backwards);
}
return resultRange;
}
PassRefPtr<Range> Editor::nextVisibleRange(Range* currentRange, const String& target, FindOptions options)
{
if (m_frame->excludeFromTextSearch())
return Range::create(m_frame->document());
RefPtr<Range> resultRange = currentRange;
RefPtr<Range> searchRange(rangeOfContents(m_frame->document()));
ExceptionCode ec = 0;
bool forward = !(options & Backwards);
for ( ; !insideVisibleArea(resultRange.get()); resultRange = findPlainText(searchRange.get(), target, options)) {
if (resultRange->collapsed(ec)) {
if (!resultRange->startContainer()->isInShadowTree())
break;
searchRange = rangeOfContents(m_frame->document());
if (forward)
searchRange->setStartAfter(resultRange->startContainer()->shadowAncestorNode(), ec);
else
searchRange->setEndBefore(resultRange->startContainer()->shadowAncestorNode(), ec);
continue;
}
if (forward)
searchRange->setStartAfter(resultRange->endContainer(), ec);
else
searchRange->setEndBefore(resultRange->startContainer(), ec);
Node* shadowTreeRoot = searchRange->shadowTreeRootNode();
if (searchRange->collapsed(ec) && shadowTreeRoot) {
if (forward)
searchRange->setEnd(shadowTreeRoot, shadowTreeRoot->childNodeCount(), ec);
else
searchRange->setStartBefore(shadowTreeRoot, ec);
}
if (searchRange->startContainer()->isDocumentNode() && searchRange->endContainer()->isDocumentNode())
break;
}
if (insideVisibleArea(resultRange.get()))
return resultRange;
if (!(options & WrapAround))
return Range::create(m_frame->document());
if (options & Backwards)
return lastVisibleRange(target, options);
return firstVisibleRange(target, options);
}
void Editor::changeSelectionAfterCommand(const VisibleSelection& newSelection, bool closeTyping, bool clearTypingStyle)
{
// If the new selection is orphaned, then don't update the selection.
if (newSelection.start().isOrphan() || newSelection.end().isOrphan())
return;
// If there is no selection change, don't bother sending shouldChangeSelection, but still call setSelection,
// because there is work that it must do in this situation.
// The old selection can be invalid here and calling shouldChangeSelection can produce some strange calls.
// See <rdar://problem/5729315> Some shouldChangeSelectedDOMRange contain Ranges for selections that are no longer valid
bool selectionDidNotChangeDOMPosition = newSelection == m_frame->selection()->selection();
if (selectionDidNotChangeDOMPosition || m_frame->selection()->shouldChangeSelection(newSelection)) {
SelectionController::SetSelectionOptions options = 0;
if (closeTyping)
options |= SelectionController::CloseTyping;
if (clearTypingStyle)
options |= SelectionController::ClearTypingStyle;
m_frame->selection()->setSelection(newSelection, options);
}
// Some editing operations change the selection visually without affecting its position within the DOM.
// For example when you press return in the following (the caret is marked by ^):
// <div contentEditable="true"><div>^Hello</div></div>
// WebCore inserts <div><br></div> *before* the current block, which correctly moves the paragraph down but which doesn't
// change the caret's DOM position (["hello", 0]). In these situations the above SelectionController::setSelection call
// does not call EditorClient::respondToChangedSelection(), which, on the Mac, sends selection change notifications and
// starts a new kill ring sequence, but we want to do these things (matches AppKit).
if (selectionDidNotChangeDOMPosition)
client()->respondToChangedSelection();
}
String Editor::selectedText() const
{
// We remove '\0' characters because they are not visibly rendered to the user.
return plainText(m_frame->selection()->toNormalizedRange().get()).replace(0, "");
}
IntRect Editor::firstRectForRange(Range* range) const
{
int extraWidthToEndOfLine = 0;
ASSERT(range->startContainer());
ASSERT(range->endContainer());
InlineBox* startInlineBox;
int startCaretOffset;
Position startPosition = VisiblePosition(range->startPosition()).deepEquivalent();
if (startPosition.isNull())
return IntRect();
startPosition.getInlineBoxAndOffset(DOWNSTREAM, startInlineBox, startCaretOffset);
RenderObject* startRenderer = startPosition.deprecatedNode()->renderer();
ASSERT(startRenderer);
IntRect startCaretRect = startRenderer->localCaretRect(startInlineBox, startCaretOffset, &extraWidthToEndOfLine);
if (startCaretRect != IntRect())
startCaretRect = startRenderer->localToAbsoluteQuad(FloatRect(startCaretRect)).enclosingBoundingBox();
InlineBox* endInlineBox;
int endCaretOffset;
Position endPosition = VisiblePosition(range->endPosition()).deepEquivalent();
if (endPosition.isNull())
return IntRect();
endPosition.getInlineBoxAndOffset(UPSTREAM, endInlineBox, endCaretOffset);
RenderObject* endRenderer = endPosition.deprecatedNode()->renderer();
ASSERT(endRenderer);
IntRect endCaretRect = endRenderer->localCaretRect(endInlineBox, endCaretOffset);
if (endCaretRect != IntRect())
endCaretRect = endRenderer->localToAbsoluteQuad(FloatRect(endCaretRect)).enclosingBoundingBox();
if (startCaretRect.y() == endCaretRect.y()) {
// start and end are on the same line
return IntRect(min(startCaretRect.x(), endCaretRect.x()),
startCaretRect.y(),
abs(endCaretRect.x() - startCaretRect.x()),
max(startCaretRect.height(), endCaretRect.height()));
}
// start and end aren't on the same line, so go from start to the end of its line
return IntRect(startCaretRect.x(),
startCaretRect.y(),
startCaretRect.width() + extraWidthToEndOfLine,
startCaretRect.height());
}
bool Editor::shouldChangeSelection(const VisibleSelection& oldSelection, const VisibleSelection& newSelection, EAffinity affinity, bool stillSelecting) const
{
return client()->shouldChangeSelectedRange(oldSelection.toNormalizedRange().get(), newSelection.toNormalizedRange().get(), affinity, stillSelecting);
}
void Editor::computeAndSetTypingStyle(CSSStyleDeclaration* style, EditAction editingAction)
{
if (!style || !style->length()) {
m_frame->selection()->clearTypingStyle();
return;
}
// Calculate the current typing style.
RefPtr<EditingStyle> typingStyle;
if (m_frame->selection()->typingStyle()) {
typingStyle = m_frame->selection()->typingStyle()->copy();
typingStyle->overrideWithStyle(style->makeMutable().get());
} else
typingStyle = EditingStyle::create(style);
typingStyle->prepareToApplyAt(m_frame->selection()->selection().visibleStart().deepEquivalent(), EditingStyle::PreserveWritingDirection);
// Handle block styles, substracting these from the typing style.
RefPtr<EditingStyle> blockStyle = typingStyle->extractAndRemoveBlockProperties();
if (!blockStyle->isEmpty())
applyCommand(ApplyStyleCommand::create(m_frame->document(), blockStyle.get(), editingAction));
// Set the remaining style as the typing style.
m_frame->selection()->setTypingStyle(typingStyle);
}
PassRefPtr<EditingStyle> Editor::selectionStartStyle() const
{
if (m_frame->selection()->isNone())
return 0;
RefPtr<Range> range(m_frame->selection()->toNormalizedRange());
Position position = range->editingStartPosition();
// If the pos is at the end of a text node, then this node is not fully selected.
// Move it to the next deep equivalent position to avoid removing the style from this node.
// e.g. if pos was at Position("hello", 5) in <b>hello<div>world</div></b>, we want Position("world", 0) instead.
// We only do this for range because caret at Position("hello", 5) in <b>hello</b>world should give you font-weight: bold.
Node* positionNode = position.containerNode();
if (m_frame->selection()->isRange() && positionNode && positionNode->isTextNode() && position.computeOffsetInContainerNode() == positionNode->maxCharacterOffset())
position = nextVisuallyDistinctCandidate(position);
Element* element = position.element();
if (!element)
return 0;
RefPtr<EditingStyle> style = EditingStyle::create(element, EditingStyle::AllProperties);
style->mergeTypingStyle(m_frame->document());
return style;
}
void Editor::textFieldDidBeginEditing(Element* e)
{
if (client())
client()->textFieldDidBeginEditing(e);
}
void Editor::textFieldDidEndEditing(Element* e)
{
if (client())
client()->textFieldDidEndEditing(e);
}
void Editor::textDidChangeInTextField(Element* e)
{
if (client())
client()->textDidChangeInTextField(e);
}
bool Editor::doTextFieldCommandFromEvent(Element* e, KeyboardEvent* ke)
{
if (client())
return client()->doTextFieldCommandFromEvent(e, ke);
return false;
}
void Editor::textWillBeDeletedInTextField(Element* input)
{
if (client())
client()->textWillBeDeletedInTextField(input);
}
void Editor::textDidChangeInTextArea(Element* e)
{
if (client())
client()->textDidChangeInTextArea(e);
}
void Editor::applyEditingStyleToBodyElement() const
{
RefPtr<NodeList> list = m_frame->document()->getElementsByTagName("body");
unsigned len = list->length();
for (unsigned i = 0; i < len; i++)
applyEditingStyleToElement(static_cast<Element*>(list->item(i)));
}
void Editor::applyEditingStyleToElement(Element* element) const
{
if (!element)
return;
CSSStyleDeclaration* style = element->style();
ASSERT(style);
ExceptionCode ec = 0;
style->setProperty(CSSPropertyWordWrap, "break-word", false, ec);
ASSERT(!ec);
style->setProperty(CSSPropertyWebkitNbspMode, "space", false, ec);
ASSERT(!ec);
style->setProperty(CSSPropertyWebkitLineBreak, "after-white-space", false, ec);
ASSERT(!ec);
}
RenderStyle* Editor::styleForSelectionStart(Node *&nodeToRemove) const
{
nodeToRemove = 0;
if (m_frame->selection()->isNone())
return 0;
Position position = m_frame->selection()->selection().visibleStart().deepEquivalent();
if (!position.isCandidate())
return 0;
if (!position.deprecatedNode())
return 0;
RefPtr<EditingStyle> typingStyle = m_frame->selection()->typingStyle();
if (!typingStyle || !typingStyle->style())
return position.deprecatedNode()->renderer()->style();
RefPtr<Element> styleElement = m_frame->document()->createElement(spanTag, false);
ExceptionCode ec = 0;
String styleText = typingStyle->style()->cssText() + " display: inline";
styleElement->setAttribute(styleAttr, styleText.impl(), ec);
ASSERT(!ec);
styleElement->appendChild(m_frame->document()->createEditingTextNode(""), ec);
ASSERT(!ec);
position.deprecatedNode()->parentNode()->appendChild(styleElement, ec);
ASSERT(!ec);
nodeToRemove = styleElement.get();
return styleElement->renderer() ? styleElement->renderer()->style() : 0;
}
// Searches from the beginning of the document if nothing is selected.
bool Editor::findString(const String& target, bool forward, bool caseFlag, bool wrapFlag, bool startInSelection)
{
FindOptions options = (forward ? 0 : Backwards) | (caseFlag ? 0 : CaseInsensitive) | (wrapFlag ? WrapAround : 0) | (startInSelection ? StartInSelection : 0);
return findString(target, options);
}
bool Editor::findString(const String& target, FindOptions options)
{
if (target.isEmpty())
return false;
if (m_frame->excludeFromTextSearch())
return false;
// Start from an edge of the selection, if there's a selection that's not in shadow content. Which edge
// is used depends on whether we're searching forward or backward, and whether startInSelection is set.
RefPtr<Range> searchRange(rangeOfContents(m_frame->document()));
VisibleSelection selection = m_frame->selection()->selection();
bool forward = !(options & Backwards);
bool startInSelection = options & StartInSelection;
if (forward)
setStart(searchRange.get(), startInSelection ? selection.visibleStart() : selection.visibleEnd());
else
setEnd(searchRange.get(), startInSelection ? selection.visibleEnd() : selection.visibleStart());
RefPtr<Node> shadowTreeRoot = selection.shadowTreeRootNode();
if (shadowTreeRoot) {
ExceptionCode ec = 0;
if (forward)
searchRange->setEnd(shadowTreeRoot.get(), shadowTreeRoot->childNodeCount(), ec);
else
searchRange->setStart(shadowTreeRoot.get(), 0, ec);
}
RefPtr<Range> resultRange(findPlainText(searchRange.get(), target, options));
// If we started in the selection and the found range exactly matches the existing selection, find again.
// Build a selection with the found range to remove collapsed whitespace.
// Compare ranges instead of selection objects to ignore the way that the current selection was made.
if (startInSelection && areRangesEqual(VisibleSelection(resultRange.get()).toNormalizedRange().get(), selection.toNormalizedRange().get())) {
searchRange = rangeOfContents(m_frame->document());
if (forward)
setStart(searchRange.get(), selection.visibleEnd());
else
setEnd(searchRange.get(), selection.visibleStart());
if (shadowTreeRoot) {
ExceptionCode ec = 0;
if (forward)
searchRange->setEnd(shadowTreeRoot.get(), shadowTreeRoot->childNodeCount(), ec);
else
searchRange->setStart(shadowTreeRoot.get(), 0, ec);
}
resultRange = findPlainText(searchRange.get(), target, options);
}
ExceptionCode exception = 0;
// If nothing was found in the shadow tree, search in main content following the shadow tree.
if (resultRange->collapsed(exception) && shadowTreeRoot) {
searchRange = rangeOfContents(m_frame->document());
if (forward)
searchRange->setStartAfter(shadowTreeRoot->shadowHost(), exception);
else
searchRange->setEndBefore(shadowTreeRoot->shadowHost(), exception);
resultRange = findPlainText(searchRange.get(), target, options);
}
if (!insideVisibleArea(resultRange.get())) {
resultRange = nextVisibleRange(resultRange.get(), target, options);
if (!resultRange)
return false;
}
// If we didn't find anything and we're wrapping, search again in the entire document (this will
// redundantly re-search the area already searched in some cases).
if (resultRange->collapsed(exception) && options & WrapAround) {
searchRange = rangeOfContents(m_frame->document());
resultRange = findPlainText(searchRange.get(), target, options);
// We used to return false here if we ended up with the same range that we started with
// (e.g., the selection was already the only instance of this text). But we decided that
// this should be a success case instead, so we'll just fall through in that case.
}
if (resultRange->collapsed(exception))
return false;
m_frame->selection()->setSelection(VisibleSelection(resultRange.get(), DOWNSTREAM));
m_frame->selection()->revealSelection();
return true;
}
static bool isFrameInRange(Frame* frame, Range* range)
{
bool inRange = false;
for (HTMLFrameOwnerElement* ownerElement = frame->ownerElement(); ownerElement; ownerElement = ownerElement->document()->ownerElement()) {
if (ownerElement->document() == range->ownerDocument()) {
ExceptionCode ec = 0;
inRange = range->intersectsNode(ownerElement, ec);
break;
}
}
return inRange;
}
unsigned Editor::countMatchesForText(const String& target, FindOptions options, unsigned limit, bool markMatches)
{
return countMatchesForText(target, 0, options, limit, markMatches);
}
unsigned Editor::countMatchesForText(const String& target, Range* range, FindOptions options, unsigned limit, bool markMatches)
{
if (target.isEmpty())
return 0;
RefPtr<Range> searchRange;
if (range) {
if (range->ownerDocument() == m_frame->document())
searchRange = range;
else if (!isFrameInRange(m_frame, range))
return 0;
}
if (!searchRange)
searchRange = rangeOfContents(m_frame->document());
Node* originalEndContainer = searchRange->endContainer();
int originalEndOffset = searchRange->endOffset();
ExceptionCode exception = 0;
unsigned matchCount = 0;
do {
RefPtr<Range> resultRange(findPlainText(searchRange.get(), target, options & ~Backwards));
if (resultRange->collapsed(exception)) {
if (!resultRange->startContainer()->isInShadowTree())
break;
searchRange->setStartAfter(resultRange->startContainer()->shadowAncestorNode(), exception);
searchRange->setEnd(originalEndContainer, originalEndOffset, exception);
continue;
}
// Only treat the result as a match if it is visible
if (insideVisibleArea(resultRange.get())) {
++matchCount;
if (markMatches)
m_frame->document()->markers()->addMarker(resultRange.get(), DocumentMarker::TextMatch);
}
// Stop looking if we hit the specified limit. A limit of 0 means no limit.
if (limit > 0 && matchCount >= limit)
break;
// Set the new start for the search range to be the end of the previous
// result range. There is no need to use a VisiblePosition here,
// since findPlainText will use a TextIterator to go over the visible
// text nodes.
searchRange->setStart(resultRange->endContainer(exception), resultRange->endOffset(exception), exception);
Node* shadowTreeRoot = searchRange->shadowTreeRootNode();
if (searchRange->collapsed(exception) && shadowTreeRoot)
searchRange->setEnd(shadowTreeRoot, shadowTreeRoot->childNodeCount(), exception);
} while (true);
if (markMatches) {
// Do a "fake" paint in order to execute the code that computes the rendered rect for each text match.
if (m_frame->view() && m_frame->contentRenderer()) {
m_frame->document()->updateLayout(); // Ensure layout is up to date.
IntRect visibleRect = m_frame->view()->visibleContentRect();
if (!visibleRect.isEmpty()) {
GraphicsContext context((PlatformGraphicsContext*)0);
context.setPaintingDisabled(true);
PaintBehavior oldBehavior = m_frame->view()->paintBehavior();
m_frame->view()->setPaintBehavior(oldBehavior | PaintBehaviorFlattenCompositingLayers);
m_frame->view()->paintContents(&context, visibleRect);
m_frame->view()->setPaintBehavior(oldBehavior);
}
}
}
return matchCount;
}
void Editor::setMarkedTextMatchesAreHighlighted(bool flag)
{
if (flag == m_areMarkedTextMatchesHighlighted)
return;
m_areMarkedTextMatchesHighlighted = flag;
m_frame->document()->markers()->repaintMarkers(DocumentMarker::TextMatch);
}
void Editor::respondToChangedSelection(const VisibleSelection& oldSelection, SelectionController::SetSelectionOptions options)
{
m_spellingCorrector->stopPendingCorrection(oldSelection);
bool closeTyping = options & SelectionController::CloseTyping;
bool isContinuousSpellCheckingEnabled = this->isContinuousSpellCheckingEnabled();
bool isContinuousGrammarCheckingEnabled = isContinuousSpellCheckingEnabled && isGrammarCheckingEnabled();
if (isContinuousSpellCheckingEnabled) {
VisibleSelection newAdjacentWords;
VisibleSelection newSelectedSentence;
bool caretBrowsing = m_frame->settings() && m_frame->settings()->caretBrowsingEnabled();
if (m_frame->selection()->selection().isContentEditable() || caretBrowsing) {
VisiblePosition newStart(m_frame->selection()->selection().visibleStart());
newAdjacentWords = VisibleSelection(startOfWord(newStart, LeftWordIfOnBoundary), endOfWord(newStart, RightWordIfOnBoundary));
if (isContinuousGrammarCheckingEnabled)
newSelectedSentence = VisibleSelection(startOfSentence(newStart), endOfSentence(newStart));
}
// Don't check spelling and grammar if the change of selection is triggered by spelling correction itself.
bool shouldCheckSpellingAndGrammar = !(options & SelectionController::SpellCorrectionTriggered);
// When typing we check spelling elsewhere, so don't redo it here.
// If this is a change in selection resulting from a delete operation,
// oldSelection may no longer be in the document.
if (shouldCheckSpellingAndGrammar && closeTyping && oldSelection.isContentEditable() && oldSelection.start().deprecatedNode() && oldSelection.start().anchorNode()->inDocument()) {
VisiblePosition oldStart(oldSelection.visibleStart());
VisibleSelection oldAdjacentWords = VisibleSelection(startOfWord(oldStart, LeftWordIfOnBoundary), endOfWord(oldStart, RightWordIfOnBoundary));
if (oldAdjacentWords != newAdjacentWords) {
if (isContinuousGrammarCheckingEnabled) {
VisibleSelection oldSelectedSentence = VisibleSelection(startOfSentence(oldStart), endOfSentence(oldStart));
markMisspellingsAndBadGrammar(oldAdjacentWords, oldSelectedSentence != newSelectedSentence, oldSelectedSentence);
} else
markMisspellingsAndBadGrammar(oldAdjacentWords, false, oldAdjacentWords);
}
}
#if !PLATFORM(MAC) || (PLATFORM(MAC) && (defined(BUILDING_ON_TIGER) || defined(BUILDING_ON_LEOPARD) || defined(BUILDING_ON_SNOW_LEOPARD)))
// This only erases markers that are in the first unit (word or sentence) of the selection.
// Perhaps peculiar, but it matches AppKit on these Mac OSX versions.
if (RefPtr<Range> wordRange = newAdjacentWords.toNormalizedRange())
m_frame->document()->markers()->removeMarkers(wordRange.get(), DocumentMarker::Spelling);
#endif
if (RefPtr<Range> sentenceRange = newSelectedSentence.toNormalizedRange())
m_frame->document()->markers()->removeMarkers(sentenceRange.get(), DocumentMarker::Grammar);
}
// When continuous spell checking is off, existing markers disappear after the selection changes.
if (!isContinuousSpellCheckingEnabled)
m_frame->document()->markers()->removeMarkers(DocumentMarker::Spelling);
if (!isContinuousGrammarCheckingEnabled)
m_frame->document()->markers()->removeMarkers(DocumentMarker::Grammar);
respondToChangedSelection(oldSelection);
}
static Node* findFirstMarkable(Node* node)
{
while (node) {
if (!node->renderer())
return 0;
if (node->renderer()->isText())
return node;
if (node->renderer()->isTextControl())
node = toRenderTextControl(node->renderer())->visiblePositionForIndex(1).deepEquivalent().deprecatedNode();
else if (node->firstChild())
node = node->firstChild();
else
node = node->nextSibling();
}
return 0;
}
bool Editor::selectionStartHasMarkerFor(DocumentMarker::MarkerType markerType, int from, int length) const
{
Node* node = findFirstMarkable(m_frame->selection()->start().deprecatedNode());
if (!node)
return false;
unsigned int startOffset = static_cast<unsigned int>(from);
unsigned int endOffset = static_cast<unsigned int>(from + length);
Vector<DocumentMarker> markers = m_frame->document()->markers()->markersForNode(node);
for (size_t i = 0; i < markers.size(); ++i) {
DocumentMarker marker = markers[i];
if (marker.startOffset <= startOffset && endOffset <= marker.endOffset && marker.type == markerType)
return true;
}
return false;
}
FloatRect Editor::windowRectForRange(const Range* range) const
{
FrameView* view = frame()->view();
if (!view)
return FloatRect();
Vector<FloatQuad> textQuads;
range->textQuads(textQuads);
FloatRect boundingRect;
size_t size = textQuads.size();
for (size_t i = 0; i < size; ++i)
boundingRect.unite(textQuads[i].boundingBox());
return view->contentsToWindow(IntRect(boundingRect));
}
TextCheckingTypeMask Editor::textCheckingTypeMaskFor(TextCheckingOptions textCheckingOptions)
{
bool shouldMarkSpelling = textCheckingOptions & MarkSpelling;
bool shouldMarkGrammar = textCheckingOptions & MarkGrammar;
bool shouldShowCorrectionPanel = textCheckingOptions & ShowCorrectionPanel;
bool shouldCheckForCorrection = shouldShowCorrectionPanel || (textCheckingOptions & CheckForCorrection);
TextCheckingTypeMask checkingTypes = 0;
if (shouldMarkSpelling)
checkingTypes |= TextCheckingTypeSpelling;
if (shouldMarkGrammar)
checkingTypes |= TextCheckingTypeGrammar;
if (shouldCheckForCorrection)
checkingTypes |= TextCheckingTypeCorrection;
#if USE(AUTOMATIC_TEXT_REPLACEMENT)
bool shouldPerformReplacement = textCheckingOptions & PerformReplacement;
if (shouldPerformReplacement) {
if (isAutomaticLinkDetectionEnabled())
checkingTypes |= TextCheckingTypeLink;
if (isAutomaticQuoteSubstitutionEnabled())
checkingTypes |= TextCheckingTypeQuote;
if (isAutomaticDashSubstitutionEnabled())
checkingTypes |= TextCheckingTypeDash;
if (isAutomaticTextReplacementEnabled())
checkingTypes |= TextCheckingTypeReplacement;
if (shouldMarkSpelling && isAutomaticSpellingCorrectionEnabled())
checkingTypes |= TextCheckingTypeCorrection;
}
#endif
return checkingTypes;
}
} // namespace WebCore