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 /* ============================================================
 * Falkon - Qt web browser
 * Copyright (C) 2010-2018 David Rosca <nowrep@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * ============================================================ */
 #ifndef WEBVIEW_H
 #define WEBVIEW_H
 
 #include <QPointer>
 #include <QWebEngineView>
 
 #include "qzcommon.h"
 #include "loadrequest.h"
 #include "wheelhelper.h"
 
 class WebPage;
 class LoadRequest;
 class WebHitTestResult;
 
 class FALKON_EXPORT WebView : public QWebEngineView
 {
     Q_OBJECT
 
 public:
     explicit WebView(QWidget* parent = nullptr);
     ~WebView() override;
 
     QIcon icon(bool allowNull = false) const;
     QString title(bool allowEmpty = false) const;
 
     WebPage* page() const;
     void setPage(WebPage* page);
 
     void load(const QUrl &url);
     void load(const LoadRequest &request);
     bool isLoading() const;
 
     int loadingProgress() const;
 
     bool backgroundActivity() const;
 
     // Set zoom level (0 - 17)
     int zoomLevel() const;
     void setZoomLevel(int level);
 
     QPointF mapToViewport(const QPointF &pos) const;
     QRect scrollBarGeometry(Qt::Orientation orientation) const;
 
     void addNotification(QWidget* notif);
     bool eventFilter(QObject *obj, QEvent *event) override;
 
     QWidget *inputWidget() const;
     virtual QWidget *overlayWidget() = 0;
 
     static bool isUrlValid(const QUrl &url);
     static QList<int> zoomLevels();
 
     // Force context menu event to be sent on mouse release
     // This allows to override right mouse button events (eg. for mouse gestures)
     static bool forceContextMenuOnMouseRelease();
     static void setForceContextMenuOnMouseRelease(bool force);
 
 Q_SIGNALS:
     void pageChanged(WebPage *page);
     void focusChanged(bool);
     void viewportResized(QSize);
     void showNotification(QWidget*);
     void privacyChanged(bool);
     void zoomLevelChanged(int);
     void backgroundActivityChanged(bool);
 
 public Q_SLOTS:
     void zoomIn();
     void zoomOut();
     void zoomReset();
 
     void editUndo();
     void editRedo();
     void editCut();
     void editCopy();
     void editPaste();
     void editSelectAll();
     void editDelete();
 
     void reloadBypassCache();
 
     void back();
     void forward();
 
     void printPage();
     void showSource();
     void sendPageByMail();
 
     void openUrlInNewTab(const QUrl &url, Qz::NewTabPositionFlags position);
 
     virtual void closeView() = 0;
     virtual void loadInNewTab(const LoadRequest &req, Qz::NewTabPositionFlags position) = 0;
 
     virtual bool isFullScreen() = 0;
     virtual void requestFullScreen(bool enable) = 0;
 
 protected Q_SLOTS:
     void slotLoadStarted();
     void slotLoadProgress(int progress);
     void slotLoadFinished(bool ok);
     void slotIconChanged();
     void slotUrlChanged(const QUrl &url);
     void slotTitleChanged(const QString &title);
 
     // Context menu slots
     void openUrlInNewWindow();
     void sendTextByMail();
     void copyLinkToClipboard();
     void savePageAs();
     void copyImageToClipboard();
     void downloadLinkToDisk();
     void downloadImageToDisk();
     void downloadMediaToDisk();
     void openActionUrl();
     void showSiteInfo();
     void searchSelectedText();
     void searchSelectedTextInBackgroundTab();
     void bookmarkLink();
     void openUrlInSelectedTab();
     void openUrlInBackgroundTab();
 
     // To support user's option whether to open in selected or background tab
     void userDefinedOpenUrlInNewTab(const QUrl &url = QUrl(), bool invert = false);
     void userDefinedOpenUrlInBgTab(const QUrl &url = QUrl());
 
 protected:
     void showEvent(QShowEvent *event) override;
     void resizeEvent(QResizeEvent *event) override;
     void contextMenuEvent(QContextMenuEvent *event) override;
 
     bool focusNextPrevChild(bool next) override;
 
     virtual void _wheelEvent(QWheelEvent *event);
     virtual void _mousePressEvent(QMouseEvent *event);
     virtual void _mouseReleaseEvent(QMouseEvent *event);
     virtual void _mouseMoveEvent(QMouseEvent *event);
     virtual void _keyPressEvent(QKeyEvent *event);
     virtual void _keyReleaseEvent(QKeyEvent *event);
     virtual void _contextMenuEvent(QContextMenuEvent *event);
 
     void loadRequest(const LoadRequest &req);
     void applyZoom();
 
     void createContextMenu(QMenu *menu, WebHitTestResult &hitTest);
     void createPageContextMenu(QMenu *menu);
     void createLinkContextMenu(QMenu *menu, const WebHitTestResult &hitTest);
     void createImageContextMenu(QMenu *menu, const WebHitTestResult &hitTest);
     void createSelectedTextContextMenu(QMenu *menu, const WebHitTestResult &hitTest);
     void createMediaContextMenu(QMenu *menu, const WebHitTestResult &hitTest);
 
     void checkForForm(QAction *action, const QPoint &pos);
     void createSearchEngine();
 
 private Q_SLOTS:
     void addSpeedDial();
     void configureSpeedDial();
     void reloadAllSpeedDials();
 
     void toggleMediaPause();
     void toggleMediaMute();
 
 private:
     void initializeActions();
 
     int m_currentZoomLevel;
     int m_progress;
     bool m_backgroundActivity;
 
     QUrl m_clickedUrl;
     QPointF m_clickedPos;
 
     WebPage* m_page;
     bool m_firstLoad;
 
     QPointer<QWidget> m_rwhvqt;
     WheelHelper m_wheelHelper;
 
     static bool s_forceContextMenuOnMouseRelease;
 };
 
 #endif // WEBVIEW_H