qwebpage.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) 2008, 2009 Nokia Corporation and/or its subsidiary(-ies)
    Copyright (C) 2007 Staikos Computing Services Inc.
    Copyright (C) 2007 Apple Inc.

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/

#include "config.h"
#include "qwebpage.h"
#include "qwebview.h"
#include "qwebframe.h"
#include "qwebpage_p.h"
#include "qwebframe_p.h"
#include "qwebhistory.h"
#include "qwebhistory_p.h"
#include "qwebsettings.h"

#include "Frame.h"
#include "FrameTree.h"
#include "FrameLoader.h"
#include "FrameLoaderClientQt.h"
#include "FrameView.h"
#include "ChromeClientQt.h"
#include "ContextMenu.h"
#include "ContextMenuClientQt.h"
#include "DocumentLoader.h"
#include "DragClientQt.h"
#include "DragController.h"
#include "DragData.h"
#include "EditorClientQt.h"
#include "Settings.h"
#include "Page.h"
#include "PageGroup.h"
#include "Pasteboard.h"
#include "FrameLoader.h"
#include "FrameLoadRequest.h"
#include "KURL.h"
#include "Logging.h"
#include "Image.h"
#include "InspectorClientQt.h"
#include "InspectorController.h"
#include "FocusController.h"
#include "Editor.h"
#include "Scrollbar.h"
#include "PlatformKeyboardEvent.h"
#include "PlatformWheelEvent.h"
#include "ProgressTracker.h"
#include "RefPtr.h"
#include "HashMap.h"
#include "HitTestResult.h"
#include "WindowFeatures.h"
#include "LocalizedStrings.h"
#include "Cache.h"
#include "runtime/InitializeThreading.h"

#include <QApplication>
#include <QBasicTimer>
#include <QBitArray>
#include <QDebug>
#include <QDragEnterEvent>
#include <QDragLeaveEvent>
#include <QDragMoveEvent>
#include <QDropEvent>
#include <QFileDialog>
#include <QHttpRequestHeader>
#include <QInputDialog>
#include <QLocale>
#include <QMessageBox>
#include <QNetworkProxy>
#include <QUndoStack>
#include <QUrl>
#include <QPainter>
#include <QClipboard>
#include <QSslSocket>
#include <QStyle>
#include <QSysInfo>
#if QT_VERSION >= 0x040400
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#else
#include "qwebnetworkinterface.h"
#endif

using namespace WebCore;

bool QWebPagePrivate::drtRun = false;
void QWEBKIT_EXPORT qt_drt_run(bool b)
{
    QWebPagePrivate::drtRun = b;
}

void QWEBKIT_EXPORT qt_webpage_setGroupName(QWebPage* page, const QString& groupName)
{
    page->handle()->page->setGroupName(groupName);
}

QString QWEBKIT_EXPORT qt_webpage_groupName(QWebPage* page)
{
    return page->handle()->page->groupName();
}

// Lookup table mapping QWebPage::WebActions to the associated Editor commands
static const char* editorCommandWebActions[] = 
{
    0, // OpenLink,

    0, // OpenLinkInNewWindow,
    0, // OpenFrameInNewWindow,
    
    0, // DownloadLinkToDisk,
    0, // CopyLinkToClipboard,
    
    0, // OpenImageInNewWindow,
    0, // DownloadImageToDisk,
    0, // CopyImageToClipboard,
    
    0, // Back,
    0, // Forward,
    0, // Stop,
    0, // Reload,
    
    "Cut", // Cut,
    "Copy", // Copy,
    "Paste", // Paste,
    
    "Undo", // Undo,
    "Redo", // Redo,
    "MoveForward", // MoveToNextChar,
    "MoveBackward", // MoveToPreviousChar,
    "MoveWordForward", // MoveToNextWord,
    "MoveWordBackward", // MoveToPreviousWord,
    "MoveDown", // MoveToNextLine,
    "MoveUp", // MoveToPreviousLine,
    "MoveToBeginningOfLine", // MoveToStartOfLine,
    "MoveToEndOfLine", // MoveToEndOfLine,
    "MoveToBeginningOfParagraph", // MoveToStartOfBlock,
    "MoveToEndOfParagraph", // MoveToEndOfBlock,
    "MoveToBeginningOfDocument", // MoveToStartOfDocument,
    "MoveToEndOfDocument", // MoveToEndOfDocument,
    "MoveForwardAndModifySelection", // SelectNextChar,
    "MoveBackwardAndModifySelection", // SelectPreviousChar,
    "MoveWordForwardAndModifySelection", // SelectNextWord,
    "MoveWordBackwardAndModifySelection", // SelectPreviousWord,
    "MoveDownAndModifySelection", // SelectNextLine,
    "MoveUpAndModifySelection", // SelectPreviousLine,
    "MoveToBeginningOfLineAndModifySelection", // SelectStartOfLine,
    "MoveToEndOfLineAndModifySelection", // SelectEndOfLine,
    "MoveToBeginningOfParagraphAndModifySelection", // SelectStartOfBlock,
    "MoveToEndOfParagraphAndModifySelection", // SelectEndOfBlock,
    "MoveToBeginningOfDocumentAndModifySelection", //SelectStartOfDocument,
    "MoveToEndOfDocumentAndModifySelection", // SelectEndOfDocument,
    "DeleteWordBackward", // DeleteStartOfWord,
    "DeleteWordForward", // DeleteEndOfWord,
    
    0, // SetTextDirectionDefault,
    0, // SetTextDirectionLeftToRight,
    0, // SetTextDirectionRightToLeft,
    
    "ToggleBold", // ToggleBold,
    "ToggleItalic", // ToggleItalic,
    "ToggleUnderline", // ToggleUnderline,
    
    0, // InspectElement,

    "InsertNewline", // InsertParagraphSeparator
    "InsertLineBreak", // InsertLineSeparator

    "SelectAll", // SelectAll

    0 // WebActionCount
};

// Lookup the appropriate editor command to use for WebAction \a action
const char* QWebPagePrivate::editorCommandForWebActions(QWebPage::WebAction action)
{
    if ((action > QWebPage::NoWebAction) && (action < int(sizeof(editorCommandWebActions) / sizeof(const char*))))
        return editorCommandWebActions[action];
    
    return 0;
}

#ifndef QT_NO_CURSOR
SetCursorEvent::SetCursorEvent(const QCursor& cursor)
    : QEvent(static_cast<QEvent::Type>(EventType))
    , m_cursor(cursor)
{}

QCursor SetCursorEvent::cursor() const
{
    return m_cursor;
}
#endif

// If you change this make sure to also adjust the docs for QWebPage::userAgentForUrl
#define WEBKIT_VERSION "527+"

static inline DragOperation dropActionToDragOp(Qt::DropActions actions)
{
    unsigned result = 0;
    if (actions & Qt::CopyAction)
        result |= DragOperationCopy;
    if (actions & Qt::MoveAction)
        result |= DragOperationMove;
    if (actions & Qt::LinkAction)
        result |= DragOperationLink;
    return (DragOperation)result;
}

static inline Qt::DropAction dragOpToDropAction(unsigned actions)
{
    Qt::DropAction result = Qt::IgnoreAction;
    if (actions & DragOperationCopy)
        result = Qt::CopyAction;
    else if (actions & DragOperationMove)
        result = Qt::MoveAction;
    else if (actions & DragOperationLink)
        result = Qt::LinkAction;
    return result;
}

QWebPagePrivate::QWebPagePrivate(QWebPage *qq)
    : q(qq)
    , view(0)
    , viewportSize(QSize(0,0))
{
    WebCore::InitializeLoggingChannelsIfNecessary();
    WebCore::PageGroup::setShouldTrackVisitedLinks(true);
    JSC::initializeThreading();
    WebCore::FrameLoader::setLocalLoadPolicy(WebCore::FrameLoader::AllowLocalLoadsForLocalAndSubstituteData);

    chromeClient = new ChromeClientQt(q);
    contextMenuClient = new ContextMenuClientQt();
    editorClient = new EditorClientQt(q);
    page = new Page(chromeClient, contextMenuClient, editorClient,
                    new DragClientQt(q), new InspectorClientQt(q));

    // ### should be configurable
    page->settings()->setDefaultTextEncodingName("iso-8859-1");

    settings = new QWebSettings(page->settings());

#ifndef QT_NO_UNDOSTACK
    undoStack = 0;
#endif
    mainFrame = 0;
#if QT_VERSION < 0x040400
    networkInterface = 0;
#else
    networkManager = 0;
#endif
    pluginFactory = 0;
    insideOpenCall = false;
    forwardUnsupportedContent = false;
    editable = false;
    useFixedLayout = false;
    linkPolicy = QWebPage::DontDelegateLinks;
#ifndef QT_NO_CONTEXTMENU
    currentContextMenu = 0;
#endif

    history.d = new QWebHistoryPrivate(page->backForwardList());
    memset(actions, 0, sizeof(actions));
}

QWebPagePrivate::~QWebPagePrivate()
{
#ifndef QT_NO_CONTEXTMENU
    delete currentContextMenu;
#endif
#ifndef QT_NO_UNDOSTACK
    delete undoStack;
#endif
    delete settings;
    delete page;
}

#if QT_VERSION < 0x040400
bool QWebPagePrivate::acceptNavigationRequest(QWebFrame *frame, const QWebNetworkRequest &request, QWebPage::NavigationType type)
{
    if (insideOpenCall
        && frame == mainFrame)
        return true;
    return q->acceptNavigationRequest(frame, request, type);
}
#else
bool QWebPagePrivate::acceptNavigationRequest(QWebFrame *frame, const QNetworkRequest &request, QWebPage::NavigationType type)
{
    if (insideOpenCall
        && frame == mainFrame)
        return true;
    return q->acceptNavigationRequest(frame, request, type);
}
#endif

void QWebPagePrivate::createMainFrame()
{
    if (!mainFrame) {
        QWebFrameData frameData;
        frameData.ownerElement = 0;
        frameData.allowsScrolling = true;
        frameData.marginWidth = 0;
        frameData.marginHeight = 0;
        mainFrame = new QWebFrame(q, &frameData);

        emit q->frameCreated(mainFrame);
    }
}

static QWebPage::WebAction webActionForContextMenuAction(WebCore::ContextMenuAction action)
{
    switch (action) {
        case WebCore::ContextMenuItemTagOpenLink: return QWebPage::OpenLink;
        case WebCore::ContextMenuItemTagOpenLinkInNewWindow: return QWebPage::OpenLinkInNewWindow;
        case WebCore::ContextMenuItemTagDownloadLinkToDisk: return QWebPage::DownloadLinkToDisk;
        case WebCore::ContextMenuItemTagCopyLinkToClipboard: return QWebPage::CopyLinkToClipboard;
        case WebCore::ContextMenuItemTagOpenImageInNewWindow: return QWebPage::OpenImageInNewWindow;
        case WebCore::ContextMenuItemTagDownloadImageToDisk: return QWebPage::DownloadImageToDisk;
        case WebCore::ContextMenuItemTagCopyImageToClipboard: return QWebPage::CopyImageToClipboard;
        case WebCore::ContextMenuItemTagOpenFrameInNewWindow: return QWebPage::OpenFrameInNewWindow;
        case WebCore::ContextMenuItemTagCopy: return QWebPage::Copy;
        case WebCore::ContextMenuItemTagGoBack: return QWebPage::Back;
        case WebCore::ContextMenuItemTagGoForward: return QWebPage::Forward;
        case WebCore::ContextMenuItemTagStop: return QWebPage::Stop;
        case WebCore::ContextMenuItemTagReload: return QWebPage::Reload;
        case WebCore::ContextMenuItemTagCut: return QWebPage::Cut;
        case WebCore::ContextMenuItemTagPaste: return QWebPage::Paste;
        case WebCore::ContextMenuItemTagDefaultDirection: return QWebPage::SetTextDirectionDefault;
        case WebCore::ContextMenuItemTagLeftToRight: return QWebPage::SetTextDirectionLeftToRight;
        case WebCore::ContextMenuItemTagRightToLeft: return QWebPage::SetTextDirectionRightToLeft;
        case WebCore::ContextMenuItemTagBold: return QWebPage::ToggleBold;
        case WebCore::ContextMenuItemTagItalic: return QWebPage::ToggleItalic;
        case WebCore::ContextMenuItemTagUnderline: return QWebPage::ToggleUnderline;
        case WebCore::ContextMenuItemTagInspectElement: return QWebPage::InspectElement;
        default: break;
    }
    return QWebPage::NoWebAction;
}

#ifndef QT_NO_CONTEXTMENU
QMenu *QWebPagePrivate::createContextMenu(const WebCore::ContextMenu *webcoreMenu,
        const QList<WebCore::ContextMenuItem> *items, QBitArray *visitedWebActions)
{
    QMenu* menu = new QMenu(view);
    for (int i = 0; i < items->count(); ++i) {
        const ContextMenuItem &item = items->at(i);
        switch (item.type()) {
            case WebCore::CheckableActionType: /* fall through */
            case WebCore::ActionType: {
                QWebPage::WebAction action = webActionForContextMenuAction(item.action());
                QAction *a = q->action(action);
                if (a) {
                    ContextMenuItem it(item);
                    webcoreMenu->checkOrEnableIfNeeded(it);
                    PlatformMenuItemDescription desc = it.releasePlatformDescription();
                    a->setEnabled(desc.enabled);
                    a->setChecked(desc.checked);
                    a->setCheckable(item.type() == WebCore::CheckableActionType);

                    menu->addAction(a);