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/*
    Copyright (C) 2008, 2009 Nokia Corporation and/or its subsidiary(-ies)
    Copyright (C) 2008 Holger Hans Peter Freyther

    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.
*/

#ifndef QWEBPAGE_P_H
#define QWEBPAGE_P_H

#include "QWebPageAdapter.h"

#include "qwebframe.h"
#include "qwebhistory.h"
#include "qwebpage.h"

#include <QPointer>
#include <qbasictimer.h>
#include <qevent.h>
#include <qgesture.h>
#include <qgraphicssceneevent.h>
#include <qgraphicswidget.h>
#include <qnetworkproxy.h>


namespace WebCore {
    class ContextMenuClientQt;
    class ContextMenuItem;
    class ContextMenu;
    class Document;
    class EditorClientQt;
    class Element;
    class InspectorController;
    class IntRect;
    class Node;
    class NodeList;
    class Frame;
}

QT_BEGIN_NAMESPACE
class QUndoStack;
class QMenu;
class QBitArray;
QT_END_NAMESPACE

class QtPluginWidgetAdapter;
class QWebInspector;
class QWebFrameAdapter;
class UndoStepQt;

class QtViewportAttributesPrivate : public QSharedData {
public:
    QtViewportAttributesPrivate(QWebPage::ViewportAttributes* qq)
        : q(qq)
    { }

    QWebPage::ViewportAttributes* q;
};

class QWebPagePrivate : public QWebPageAdapter {
public:
    QWebPagePrivate(QWebPage*);
    ~QWebPagePrivate();

    static WebCore::Page* core(const QWebPage*);

    // Adapter implementation
    virtual void show() OVERRIDE;
    virtual void setFocus() OVERRIDE;
    virtual void unfocus() OVERRIDE;
    virtual void setWindowRect(const QRect &) OVERRIDE;
    virtual QSize viewportSize() const OVERRIDE;
    virtual QWebPageAdapter* createWindow(bool /*dialog*/) OVERRIDE;
    virtual QObject* handle() OVERRIDE { return q; }
    virtual void javaScriptConsoleMessage(const QString& message, int lineNumber, const QString& sourceID) OVERRIDE;
    virtual void javaScriptAlert(QWebFrameAdapter*, const QString& msg) OVERRIDE;
    virtual bool javaScriptConfirm(QWebFrameAdapter*, const QString& msg) OVERRIDE;
    virtual bool javaScriptPrompt(QWebFrameAdapter*, const QString& msg, const QString& defaultValue, QString* result) OVERRIDE;
    virtual bool shouldInterruptJavaScript() OVERRIDE;
    virtual void printRequested(QWebFrameAdapter*) OVERRIDE;
    virtual void databaseQuotaExceeded(QWebFrameAdapter*, const QString& databaseName) OVERRIDE;
    virtual void applicationCacheQuotaExceeded(QWebSecurityOrigin*, quint64 defaultOriginQuota, quint64 totalSpaceNeeded) OVERRIDE;
    virtual void setToolTip(const QString&) OVERRIDE;
#if USE(QT_MULTIMEDIA)
    virtual QWebFullScreenVideoHandler* createFullScreenVideoHandler() OVERRIDE;
#endif
    virtual QWebFrameAdapter* mainFrameAdapter() OVERRIDE;
    virtual QStringList chooseFiles(QWebFrameAdapter*, bool allowMultiple, const QStringList& suggestedFileNames) OVERRIDE;
    virtual QColor colorSelectionRequested(const QColor& selectedColor) OVERRIDE;
    virtual QWebSelectMethod* createSelectPopup() OVERRIDE;
    virtual QRect viewRectRelativeToWindow() OVERRIDE;
    virtual void geolocationPermissionRequested(QWebFrameAdapter*) OVERRIDE;
    virtual void geolocationPermissionRequestCancelled(QWebFrameAdapter*) OVERRIDE;
    virtual void notificationsPermissionRequested(QWebFrameAdapter*) OVERRIDE;
    virtual void notificationsPermissionRequestCancelled(QWebFrameAdapter*) OVERRIDE;

    virtual void respondToChangedContents() OVERRIDE;
    virtual void respondToChangedSelection() OVERRIDE;
    virtual void microFocusChanged() OVERRIDE;
    virtual void triggerCopyAction() OVERRIDE;
    virtual void triggerActionForKeyEvent(QKeyEvent*) OVERRIDE;
    virtual void clearUndoStack() OVERRIDE;
    virtual bool canUndo() const OVERRIDE;
    virtual bool canRedo() const OVERRIDE;
    virtual void undo() OVERRIDE;
    virtual void redo() OVERRIDE;
    virtual void createUndoStep(QSharedPointer<UndoStepQt>) OVERRIDE;
    virtual const char* editorCommandForKeyEvent(QKeyEvent*) OVERRIDE;

    void updateNavigationActions() OVERRIDE;

    virtual QObject* inspectorHandle() OVERRIDE;
    virtual void setInspectorFrontend(QObject*) OVERRIDE;
    virtual void setInspectorWindowTitle(const QString&) OVERRIDE;
    virtual void createWebInspector(QObject** inspectorView, QWebPageAdapter** inspectorPage) OVERRIDE;
    virtual QStringList menuActionsAsText() OVERRIDE;
    virtual void emitViewportChangeRequested() OVERRIDE;
    virtual bool acceptNavigationRequest(QWebFrameAdapter*, const QNetworkRequest&, int type) OVERRIDE;
    virtual void emitRestoreFrameStateRequested(QWebFrameAdapter*) OVERRIDE;
    virtual void emitSaveFrameStateRequested(QWebFrameAdapter*, QWebHistoryItem*) OVERRIDE;
    virtual void emitDownloadRequested(const QNetworkRequest&) OVERRIDE;
    virtual void emitFrameCreated(QWebFrameAdapter*) OVERRIDE;
    virtual QString userAgentForUrl(const QUrl &url) const OVERRIDE { return q->userAgentForUrl(url); }
    virtual bool supportsErrorPageExtension() const OVERRIDE { return q->supportsExtension(QWebPage::ErrorPageExtension); }
    virtual bool errorPageExtension(ErrorPageOption *, ErrorPageReturn *) OVERRIDE;
    virtual QtPluginWidgetAdapter* createPlugin(const QString &, const QUrl &, const QStringList &, const QStringList &) OVERRIDE;
    virtual QtPluginWidgetAdapter* adapterForWidget(QObject *) const OVERRIDE;

    void createMainFrame();
#ifndef QT_NO_CONTEXTMENU
    QMenu* createContextMenu(const WebCore::ContextMenu* webcoreMenu, const QList<WebCore::ContextMenuItem>* items, QBitArray* visitedWebActions);
#endif
    void _q_onLoadProgressChanged(int);
    void _q_webActionTriggered(bool checked);
    void _q_cleanupLeakMessages();
    void updateAction(QWebPage::WebAction action);
    void updateEditorActions();

    void timerEvent(QTimerEvent*);

    void mouseMoveEvent(QMouseEvent*);
    void mousePressEvent(QMouseEvent*);
    void mouseDoubleClickEvent(QMouseEvent*);
    void mouseTripleClickEvent(QMouseEvent*);
    void mouseReleaseEvent(QMouseEvent*);
#ifndef QT_NO_CONTEXTMENU
    void contextMenuEvent(const QPoint& globalPos);
#endif
#ifndef QT_NO_WHEELEVENT
    void wheelEvent(QWheelEvent*);
#endif
    void keyPressEvent(QKeyEvent*);
    void keyReleaseEvent(QKeyEvent*);
    void focusInEvent(QFocusEvent*);
    void focusOutEvent(QFocusEvent*);

    template<class T> void dragEnterEvent(T*);
    template<class T> void dragLeaveEvent(T*);
    template<class T> void dragMoveEvent(T*);
    template<class T> void dropEvent(T*);

    void inputMethodEvent(QInputMethodEvent*);

#ifndef QT_NO_PROPERTIES
    void dynamicPropertyChangeEvent(QDynamicPropertyChangeEvent*);
#endif

    void shortcutOverrideEvent(QKeyEvent*);
    void leaveEvent(QEvent*);
    void handleSoftwareInputPanel(Qt::MouseButton, const QPoint&);
    bool handleScrolling(QKeyEvent*, WebCore::Frame*);

    // Returns whether the default action was cancelled in the JS event handler
    bool touchEvent(QTouchEvent*);

    bool gestureEvent(QGestureEvent*);

    class TouchAdjuster {
    public:
        TouchAdjuster(unsigned topPadding, unsigned rightPadding, unsigned bottomPadding, unsigned leftPadding);

        WebCore::IntPoint findCandidatePointForTouch(const WebCore::IntPoint&, WebCore::Document*) const;

    private:
        unsigned m_topPadding;
        unsigned m_rightPadding;
        unsigned m_bottomPadding;
        unsigned m_leftPadding;
    };

    void adjustPointForClicking(QMouseEvent*);
#if !defined(QT_NO_GRAPHICSVIEW)
    void adjustPointForClicking(QGraphicsSceneMouseEvent*);
#endif

    void setInspector(QWebInspector*);
    QWebInspector* getOrCreateInspector();
    WebCore::InspectorController* inspectorController();
    quint16 inspectorServerPort();

#ifndef QT_NO_SHORTCUT
    static QWebPage::WebAction editorActionForKeyEvent(QKeyEvent* event);
#endif
    static const char* editorCommandForWebActions(QWebPage::WebAction action);

    QWebPage *q;
    QPointer<QWebFrame> mainFrame;

#ifndef QT_NO_UNDOSTACK
    QUndoStack *undoStack;
#endif

    QPointer<QWidget> view;

    quint64 m_totalBytes;
    quint64 m_bytesReceived;

    QPoint tripleClick;
    QBasicTimer tripleClickTimer;

    bool clickCausedFocus;

    QWebPage::LinkDelegationPolicy linkPolicy;

    QSize m_viewportSize;
    QSize fixedLayoutSize;

    QWebHistory history;
    QWebHitTestResult hitTestResult;
#ifndef QT_NO_CONTEXTMENU
    QPointer<QMenu> currentContextMenu;
#endif
    QPalette palette;
    bool useFixedLayout;

    QAction *actions[QWebPage::WebActionCount];

    QWidget* inspectorFrontend;
    QWebInspector* inspector;
    bool inspectorIsInternalOnly; // True if created through the Inspect context menu action
    Qt::DropAction m_lastDropAction;
};

#endif