Source/WebCore/html/BaseButtonInputType.cpp

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 * Copyright (C) 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
 * OWNER 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 "BaseButtonInputType.h"

#include "HTMLInputElement.h"
#include "KeyboardEvent.h"
#include "RenderButton.h"

namespace WebCore {

bool BaseButtonInputType::appendFormData(FormDataList&, bool) const
{
    // Buttons except overridden types are never successful.
    return false;
}

void BaseButtonInputType::handleKeydownEvent(KeyboardEvent* event)
{
    const String& key = event->keyIdentifier();
    if (key == "U+0020") {
        element()->setActive(true, true);
        // No setDefaultHandled(), because IE dispatches a keypress in this case
        // and the caller will only dispatch a keypress if we don't call setDefaultHandled().
    }
}

void BaseButtonInputType::handleKeypressEvent(KeyboardEvent* event)
{
    int charCode = event->charCode();
    if (charCode == '\r') {
        element()->dispatchSimulatedClick(event);
        event->setDefaultHandled();
        return;
    }
    if (charCode == ' ') {
        // Prevent scrolling down the page.
        event->setDefaultHandled();
    }
}

void BaseButtonInputType::handleKeyupEvent(KeyboardEvent* event)
{
    const String& key = event->keyIdentifier();
    if (key != "U+0020")
        return;
    // Simulate mouse click for spacebar for button types.
    dispatchSimulatedClickIfActive(event);
}

RenderObject* BaseButtonInputType::createRenderer(RenderArena* arena, RenderStyle*) const
{
    return new (arena) RenderButton(element());
}

// FIXME: Could share this with BaseCheckableInputType and RangeInputType if we had a common base class.
void BaseButtonInputType::accessKeyAction(bool sendToAnyElement)
{
    InputType::accessKeyAction(sendToAnyElement);

    // Send mouse button events if the caller specified sendToAnyElement.
    // FIXME: The comment above is no good. It says what we do, but not why.
    element()->dispatchSimulatedClick(0, sendToAnyElement);
}

bool BaseButtonInputType::storesValueSeparateFromAttribute()
{
    return false;
}

} // namespace WebCore