pluginviewmac.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.
 * Copyright (C) 2008 Collabora Ltd. 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.
 */

#ifndef __LP64__

#include "config.h"
#include "PluginView.h"

#include <runtime/JSLock.h>
#include <runtime/JSValue.h>
#include "wtf/RetainPtr.h"

#include "Document.h"
#include "DocumentLoader.h"
#include "Element.h"
#include "EventNames.h"
#include "FocusController.h"
#include "FrameLoader.h"
#include "FrameLoadRequest.h"
#include "FrameTree.h"
#include "Frame.h"
#include "FrameView.h"
#include "GraphicsContext.h"
#include "HTMLNames.h"
#include "HTMLPlugInElement.h"
#include "Image.h"
#include "JSDOMBinding.h"
#include "KeyboardEvent.h"
#include "MouseEvent.h"
#include "NotImplemented.h"
#include "npruntime_impl.h"
#include "Page.h"
#include "PlatformMouseEvent.h"
#include "PlatformKeyboardEvent.h"
#include "PluginDebug.h"
#include "PluginPackage.h"
#include "PluginMainThreadScheduler.h"
#include "RenderLayer.h"
#include "runtime.h"
#include "runtime_root.h"
#include "ScriptController.h"
#include "Settings.h"

using JSC::ExecState;
using JSC::Interpreter;
using JSC::JSLock;
using JSC::JSObject;
using JSC::JSValue;
using JSC::UString;

#if PLATFORM(QT)
#include <QWidget>
#include <QKeyEvent>
QT_BEGIN_NAMESPACE
extern Q_GUI_EXPORT OSWindowRef qt_mac_window_for(const QWidget *w);
QT_END_NAMESPACE
#endif

using std::min;

using namespace WTF;

namespace WebCore {

using namespace HTMLNames;

static int modifiersForEvent(UIEventWithKeyState *event);

static inline WindowRef nativeWindowFor(PlatformWidget widget)
{
#if PLATFORM(QT)
    if (widget)
        return static_cast<WindowRef>(qt_mac_window_for(widget));
#endif
    return 0;
}

static inline CGContextRef cgHandleFor(PlatformWidget widget)
{
#if PLATFORM(QT)
    if (widget)
        return (CGContextRef)widget->macCGHandle();
#endif
    return 0;
}

static inline IntPoint topLevelOffsetFor(PlatformWidget widget)
{
#if PLATFORM(QT)
    if (widget) {
        PlatformWidget topLevel = widget->window();
        return widget->mapTo(topLevel, QPoint(0, 0)) + topLevel->geometry().topLeft() - topLevel->pos();
    }
#endif
    return IntPoint();
}

// --------------- Lifetime management -----------------

void PluginView::init()
{
    if (m_haveInitialized)
        return;
    m_haveInitialized = true;

    if (!m_plugin) {
        ASSERT(m_status == PluginStatusCanNotFindPlugin);
        return;
    }

    if (!m_plugin->load()) {
        m_plugin = 0;
        m_status = PluginStatusCanNotLoadPlugin;
        return;
    }

    if (!start()) {
        m_status = PluginStatusCanNotLoadPlugin;
        return;
    }

    setPlatformPluginWidget(m_parentFrame->view()->hostWindow()->platformWindow());

    m_npCgContext.window = 0;
    m_npCgContext.context = 0;
    m_npWindow.window = (void*)&m_npCgContext;
    m_npWindow.type = NPWindowTypeWindow;
    m_npWindow.x = 0;
    m_npWindow.y = 0;
    m_npWindow.width = 0;
    m_npWindow.height = 0;
    m_npWindow.clipRect.left = 0;
    m_npWindow.clipRect.top = 0;
    m_npWindow.clipRect.right = 0;
    m_npWindow.clipRect.bottom = 0;

    setIsNPAPIPlugin(true);

    show();

    m_status = PluginStatusLoadedSuccessfully;

    // TODO: Implement null timer throttling depending on plugin activation
    m_nullEventTimer.set(new Timer<PluginView>(this, &PluginView::nullEventTimerFired));
    m_nullEventTimer->startRepeating(0.02);
}

PluginView::~PluginView()
{
    stop();

    deleteAllValues(m_requests);

    freeStringArray(m_paramNames, m_paramCount);
    freeStringArray(m_paramValues, m_paramCount);

    m_parentFrame->script()->cleanupScriptObjectsForPlugin(this);

    if (m_plugin && !(m_plugin->quirks().contains(PluginQuirkDontUnloadPlugin)))
        m_plugin->unload();

    m_window = 0;
}

void PluginView::stop()
{
    if (!m_isStarted)
        return;

    HashSet<RefPtr<PluginStream> > streams = m_streams;
    HashSet<RefPtr<PluginStream> >::iterator end = streams.end();
    for (HashSet<RefPtr<PluginStream> >::iterator it = streams.begin(); it != end; ++it) {
        (*it)->stop();
        disconnectStream((*it).get());
    }

    ASSERT(m_streams.isEmpty());

    m_isStarted = false;

    JSC::JSLock::DropAllLocks dropAllLocks(false);

    PluginMainThreadScheduler::scheduler().unregisterPlugin(m_instance);

    // Destroy the plugin
    PluginView::setCurrentPluginView(this);
    setCallingPlugin(true);
    m_plugin->pluginFuncs()->destroy(m_instance, 0);
    setCallingPlugin(false);
    PluginView::setCurrentPluginView(0);

    m_instance->pdata = 0;
}

NPError PluginView::getValueStatic(NPNVariable variable, void* value)
{
    LOG(Plugin, "PluginView::getValueStatic(%d)", variable);

    switch (variable) {
    case NPNVToolkit:
        *static_cast<uint32*>(value) = 0;
        return NPERR_NO_ERROR;

    case NPNVjavascriptEnabledBool:
        *static_cast<NPBool*>(value) = true;
        return NPERR_NO_ERROR;

    default:
        return NPERR_GENERIC_ERROR;
    }
}

NPError PluginView::getValue(NPNVariable variable, void* value)
{
    LOG(Plugin, "PluginView::getValue(%d)", variable);

    switch (variable) {
    case NPNVWindowNPObject: {
        if (m_isJavaScriptPaused)
            return NPERR_GENERIC_ERROR;

        NPObject* windowScriptObject = m_parentFrame->script()->windowScriptNPObject();

        // Return value is expected to be retained, as described in
        // <http://www.mozilla.org/projects/plugin/npruntime.html>
        if (windowScriptObject)
            _NPN_RetainObject(windowScriptObject);

        void** v = (void**)value;
        *v = windowScriptObject;

        return NPERR_NO_ERROR;
    }

    case NPNVPluginElementNPObject: {
        if (m_isJavaScriptPaused)
            return NPERR_GENERIC_ERROR;

        NPObject* pluginScriptObject = 0;

        if (m_element->hasTagName(appletTag) || m_element->hasTagName(embedTag) || m_element->hasTagName(objectTag))
            pluginScriptObject = static_cast<HTMLPlugInElement*>(m_element)->getNPObject();

        // Return value is expected to be retained, as described in
        // <http://www.mozilla.org/projects/plugin/npruntime.html>
        if (pluginScriptObject)
            _NPN_RetainObject(pluginScriptObject);

        void** v = (void**)value;
        *v = pluginScriptObject;

        return NPERR_NO_ERROR;
    }

    case NPNVsupportsCoreGraphicsBool:
        *static_cast<NPBool*>(value) = true;
        return NPERR_NO_ERROR;

    default:
        return getValueStatic(variable, value);
    }

}
void PluginView::setParent(ScrollView* parent)
{
    Widget::setParent(parent);

    if (parent)
        init();
}

// -------------- Geometry and painting ----------------

void PluginView::show()
{
    LOG(Plugin, "PluginView::show()");

    setSelfVisible(true);

    if (isParentVisible() && platformPluginWidget())
        platformPluginWidget()->setVisible(true);

    Widget::show();
}

void PluginView::hide()
{
    LOG(Plugin, "PluginView::hide()");

    setSelfVisible(false);

    if (isParentVisible() && platformPluginWidget())
        platformPluginWidget()->setVisible(false);

    Widget::hide();
}

void PluginView::setFocus()
{
    LOG(Plugin, "PluginView::setFocus()");

    if (platformPluginWidget())
       platformPluginWidget()->setFocus(Qt::OtherFocusReason);
   else
       Widget::setFocus();

    // TODO: Also handle and pass on blur events (focus lost)

    EventRecord record;
    record.what = getFocusEvent;
    record.message = 0;
    record.when = TickCount();
    record.where = globalMousePosForPlugin();
    record.modifiers = GetCurrentKeyModifiers();

    if (!dispatchNPEvent(record))
        LOG(Events, "PluginView::setFocus(): Get-focus event not accepted");
}

void PluginView::setParentVisible(bool visible)
{
    if (isParentVisible() == visible)
        return;

    Widget::setParentVisible(visible);

    if (isSelfVisible() && platformPluginWidget())
        platformPluginWidget()->setVisible(visible);
}