/*
 * Copyright (C) 2010, 2011 Apple Inc. All rights reserved.
 *
 * 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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.
 */

#import "config.h"
#import "WebPageProxy.h"

#import "AttributedString.h"
#import "DataReference.h"
#import "DictionaryPopupInfo.h"
#import "EditorState.h"
#import "NativeWebKeyboardEvent.h"
#import "PageClient.h"
#import "PageClientImpl.h"
#import "TextChecker.h"
#import "WebPageMessages.h"
#import "WebProcessProxy.h"
#import <wtf/text/StringConcatenate.h>

@interface NSApplication (Details)
- (void)speakString:(NSString *)string;
@end

using namespace WebCore;

namespace WebKit {

#if defined(__ppc__) || defined(__ppc64__)
#define PROCESSOR "PPC"
#elif defined(__i386__) || defined(__x86_64__)
#define PROCESSOR "Intel"
#else
#error Unknown architecture
#endif

static inline int callGestalt(OSType selector)
{
    SInt32 value = 0;
    Gestalt(selector, &value);
    return value;
}

// Uses underscores instead of dots because if "4." ever appears in a user agent string, old DHTML libraries treat it as Netscape 4.
static String macOSXVersionString()
{
    // Can't use -[NSProcessInfo operatingSystemVersionString] because it has too much stuff we don't want.
    int major = callGestalt(gestaltSystemVersionMajor);
    ASSERT(major);

    int minor = callGestalt(gestaltSystemVersionMinor);
    int bugFix = callGestalt(gestaltSystemVersionBugFix);
    if (bugFix)
        return String::format("%d_%d_%d", major, minor, bugFix);
    if (minor)
        return String::format("%d_%d", major, minor);
    return String::format("%d", major);
}

static String userVisibleWebKitVersionString()
{
    // If the version is 4 digits long or longer, then the first digit represents
    // the version of the OS. Our user agent string should not include this first digit,
    // so strip it off and report the rest as the version. <rdar://problem/4997547>
    NSString *fullVersion = [[NSBundle bundleForClass:NSClassFromString(@"WKView")] objectForInfoDictionaryKey:(NSString *)kCFBundleVersionKey];
    NSRange nonDigitRange = [fullVersion rangeOfCharacterFromSet:[[NSCharacterSet decimalDigitCharacterSet] invertedSet]];
    if (nonDigitRange.location == NSNotFound && [fullVersion length] >= 4)
        return [fullVersion substringFromIndex:1];
    if (nonDigitRange.location != NSNotFound && nonDigitRange.location >= 4)
        return [fullVersion substringFromIndex:1];
    return fullVersion;
}

String WebPageProxy::standardUserAgent(const String& applicationNameForUserAgent)
{
    DEFINE_STATIC_LOCAL(String, osVersion, (macOSXVersionString()));
    DEFINE_STATIC_LOCAL(String, webKitVersion, (userVisibleWebKitVersionString()));

    if (applicationNameForUserAgent.isEmpty())
        return makeString("Mozilla/5.0 (Macintosh; " PROCESSOR " Mac OS X ", osVersion, ") AppleWebKit/", webKitVersion, " (KHTML, like Gecko)");
    return makeString("Mozilla/5.0 (Macintosh; " PROCESSOR " Mac OS X ", osVersion, ") AppleWebKit/", webKitVersion, " (KHTML, like Gecko) ", applicationNameForUserAgent);
}

void WebPageProxy::getIsSpeaking(bool& isSpeaking)
{
    isSpeaking = [NSApp isSpeaking];
}

void WebPageProxy::speak(const String& string)
{
    [NSApp speakString:nsStringFromWebCoreString(string)];
}

void WebPageProxy::stopSpeaking()
{
    [NSApp stopSpeaking:nil];
}

void WebPageProxy::searchWithSpotlight(const String& string)
{
    [[NSWorkspace sharedWorkspace] showSearchResultsForQueryString:nsStringFromWebCoreString(string)];
}

CGContextRef WebPageProxy::containingWindowGraphicsContext()
{
    return m_pageClient->containingWindowGraphicsContext();
}

void WebPageProxy::updateWindowIsVisible(bool windowIsVisible)
{
    if (!isValid())
        return;
    process()->send(Messages::WebPage::SetWindowIsVisible(windowIsVisible), m_pageID);
}

void WebPageProxy::windowAndViewFramesChanged(const IntRect& windowFrameInScreenCoordinates, const IntRect& viewFrameInWindowCoordinates, const IntPoint& accessibilityViewCoordinates)
{
    if (!isValid())
        return;

    process()->send(Messages::WebPage::WindowAndViewFramesChanged(windowFrameInScreenCoordinates, viewFrameInWindowCoordinates, accessibilityViewCoordinates), m_pageID);
}

void WebPageProxy::setComposition(const String& text, Vector<CompositionUnderline> underlines, uint64_t selectionStart, uint64_t selectionEnd, uint64_t replacementRangeStart, uint64_t replacementRangeEnd)
{
    process()->sendSync(Messages::WebPage::SetComposition(text, underlines, selectionStart, selectionEnd, replacementRangeStart, replacementRangeEnd), Messages::WebPage::SetComposition::Reply(m_editorState), m_pageID);
}

void WebPageProxy::confirmComposition()
{
    process()->sendSync(Messages::WebPage::ConfirmComposition(), Messages::WebPage::ConfirmComposition::Reply(m_editorState), m_pageID);
}

bool WebPageProxy::insertText(const String& text, uint64_t replacementRangeStart, uint64_t replacementRangeEnd)
{
    bool handled;
    process()->sendSync(Messages::WebPage::InsertText(text, replacementRangeStart, replacementRangeEnd), Messages::WebPage::InsertText::Reply(handled, m_editorState), m_pageID);
    return handled;
}

void WebPageProxy::getMarkedRange(uint64_t& location, uint64_t& length)
{
    process()->sendSync(Messages::WebPage::GetMarkedRange(), Messages::WebPage::GetMarkedRange::Reply(location, length), m_pageID);
}

void WebPageProxy::getSelectedRange(uint64_t& location, uint64_t& length)
{
    process()->sendSync(Messages::WebPage::GetSelectedRange(), Messages::WebPage::GetSelectedRange::Reply(location, length), m_pageID);
}

void WebPageProxy::getAttributedSubstringFromRange(uint64_t location, uint64_t length, AttributedString& result)
{
    process()->sendSync(Messages::WebPage::GetAttributedSubstringFromRange(location, length), Messages::WebPage::GetAttributedSubstringFromRange::Reply(result), m_pageID);
}

uint64_t WebPageProxy::characterIndexForPoint(const IntPoint point)
{
    uint64_t result;
    process()->sendSync(Messages::WebPage::CharacterIndexForPoint(point), Messages::WebPage::CharacterIndexForPoint::Reply(result), m_pageID);
    return result;
}

WebCore::IntRect WebPageProxy::firstRectForCharacterRange(uint64_t location, uint64_t length)
{
    IntRect resultRect;
    process()->sendSync(Messages::WebPage::FirstRectForCharacterRange(location, length), Messages::WebPage::FirstRectForCharacterRange::Reply(resultRect), m_pageID);
    return resultRect;
}

bool WebPageProxy::executeKeypressCommands(const Vector<WebCore::KeypressCommand>& commands)
{
    bool result;
    process()->sendSync(Messages::WebPage::ExecuteKeypressCommands(commands), Messages::WebPage::ExecuteKeypressCommands::Reply(result, m_editorState), m_pageID);
    return result;
}

bool WebPageProxy::writeSelectionToPasteboard(const String& pasteboardName, const Vector<String>& pasteboardTypes)
{
    bool result;
    const double messageTimeout = 20;
    process()->sendSync(Messages::WebPage::WriteSelectionToPasteboard(pasteboardName, pasteboardTypes), Messages::WebPage::WriteSelectionToPasteboard::Reply(result), m_pageID, messageTimeout);
    return result;
}

bool WebPageProxy::readSelectionFromPasteboard(const String& pasteboardName)
{
    bool result;
    const double messageTimeout = 20;
    process()->sendSync(Messages::WebPage::ReadSelectionFromPasteboard(pasteboardName), Messages::WebPage::ReadSelectionFromPasteboard::Reply(result), m_pageID, messageTimeout);
    return result;
}

void WebPageProxy::setDragImage(const WebCore::IntPoint& clientPosition, const ShareableBitmap::Handle& dragImageHandle, bool isLinkDrag)
{
    RefPtr<ShareableBitmap> dragImage = ShareableBitmap::create(dragImageHandle);
    if (!dragImage)
        return;
    
    m_pageClient->setDragImage(clientPosition, dragImage.release(), isLinkDrag);
}

void WebPageProxy::performDictionaryLookupAtLocation(const WebCore::FloatPoint& point)
{
    if (!isValid())
        return;

    process()->send(Messages::WebPage::PerformDictionaryLookupAtLocation(point), m_pageID); 
}

void WebPageProxy::interpretQueuedKeyEvent(const EditorState& state, bool& handled, Vector<WebCore::KeypressCommand>& commands)
{
    m_editorState = state;
    handled = m_pageClient->interpretKeyEvent(m_keyEventQueue.first(), commands);
}

// Complex text input support for plug-ins.
void WebPageProxy::sendComplexTextInputToPlugin(uint64_t pluginComplexTextInputIdentifier, const String& textInput)
{
    if (!isValid())
        return;
    
    process()->send(Messages::WebPage::SendComplexTextInputToPlugin(pluginComplexTextInputIdentifier, textInput), m_pageID);
}

void WebPageProxy::uppercaseWord()
{
    process()->send(Messages::WebPage::UppercaseWord(), m_pageID);
}

void WebPageProxy::lowercaseWord()
{
    process()->send(Messages::WebPage::LowercaseWord(), m_pageID);
}

void WebPageProxy::capitalizeWord()
{
    process()->send(Messages::WebPage::CapitalizeWord(), m_pageID);
}

void WebPageProxy::setSmartInsertDeleteEnabled(bool isSmartInsertDeleteEnabled)
{ 
    if (m_isSmartInsertDeleteEnabled == isSmartInsertDeleteEnabled)
        return;

    TextChecker::setSmartInsertDeleteEnabled(isSmartInsertDeleteEnabled);
    m_isSmartInsertDeleteEnabled = isSmartInsertDeleteEnabled;
    process()->send(Messages::WebPage::SetSmartInsertDeleteEnabled(isSmartInsertDeleteEnabled), m_pageID);
}

void WebPageProxy::didPerformDictionaryLookup(const String& text, const DictionaryPopupInfo& dictionaryPopupInfo)
{
    m_pageClient->didPerformDictionaryLookup(text, m_viewScaleFactor, dictionaryPopupInfo);
}
    
void WebPageProxy::registerWebProcessAccessibilityToken(const CoreIPC::DataReference& data)
{
    m_pageClient->accessibilityWebProcessTokenReceived(data);
}    
    
void WebPageProxy::registerUIProcessAccessibilityTokens(const CoreIPC::DataReference& elementToken, const CoreIPC::DataReference& windowToken)
{
    if (!isValid())
        return;

    process()->send(Messages::WebPage::RegisterUIProcessAccessibilityTokens(elementToken, windowToken), m_pageID);
}

void WebPageProxy::setComplexTextInputEnabled(uint64_t pluginComplexTextInputIdentifier, bool complexTextInputEnabled)
{
    m_pageClient->setComplexTextInputEnabled(pluginComplexTextInputIdentifier, complexTextInputEnabled);
}

void WebPageProxy::executeSavedCommandBySelector(const String& selector, bool& handled)
{
    handled = m_pageClient->executeSavedCommandBySelector(selector);
}

bool WebPageProxy::shouldDelayWindowOrderingForEvent(const WebKit::WebMouseEvent& event)
{
    bool result = false;
    const double messageTimeout = 3;
    process()->sendSync(Messages::WebPage::ShouldDelayWindowOrderingEvent(event), Messages::WebPage::ShouldDelayWindowOrderingEvent::Reply(result), m_pageID, messageTimeout);
    return result;
}

bool WebPageProxy::acceptsFirstMouse(int eventNumber, const WebKit::WebMouseEvent& event)
{
    bool result = false;
    const double messageTimeout = 3;
    process()->sendSync(Messages::WebPage::AcceptsFirstMouse(eventNumber, event), Messages::WebPage::AcceptsFirstMouse::Reply(result), m_pageID, messageTimeout);
    return result;
}

} // namespace WebKit