tabwidget.h Example File

webkitwidgets/browser/tabwidget.h

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  #ifndef TABWIDGET_H
  #define TABWIDGET_H

  #include <QtWidgets/QTabBar>

  #include <QtWidgets/QShortcut>
  /*
      Tab bar with a few more features such as a context menu and shortcuts
   */
  class TabBar : public QTabBar
  {
      Q_OBJECT

  signals:
      void newTab();
      void cloneTab(int index);
      void closeTab(int index);
      void closeOtherTabs(int index);
      void reloadTab(int index);
      void reloadAllTabs();
      void tabMoveRequested(int fromIndex, int toIndex);

  public:
      TabBar(QWidget *parent = 0);

  protected:
      void mousePressEvent(QMouseEvent* event);
      void mouseMoveEvent(QMouseEvent* event);

  private slots:
      void selectTabAction();
      void cloneTab();
      void closeTab();
      void closeOtherTabs();
      void reloadTab();
      void contextMenuRequested(const QPoint &position);

  private:
      QList<QShortcut*> m_tabShortcuts;
      friend class TabWidget;

      QPoint m_dragStartPos;
      int m_dragCurrentIndex;
  };

  #include <QWebPage>

  class QAction;

  class WebView;
  /*!
      A proxy object that connects a single browser action
      to one child webpage action at a time.

      Example usage: used to keep the main window stop action in sync with
      the current tabs webview's stop action.
   */
  class WebActionMapper : public QObject
  {
      Q_OBJECT

  public:
      WebActionMapper(QAction *root, QWebPage::WebAction webAction, QObject *parent);
      QWebPage::WebAction webAction() const;
      void addChild(QAction *action);
      void updateCurrent(QWebPage *currentParent);

  private slots:
      void rootTriggered();
      void childChanged();
      void rootDestroyed();
      void currentDestroyed();

  private:
      QWebPage *m_currentParent;
      QAction *m_root;
      QWebPage::WebAction m_webAction;
  };

  #include <QtCore/QUrl>
  #include <QtWidgets/QTabWidget>
  class QCompleter;
  class QLineEdit;
  class QMenu;
  class QStackedWidget;

  /*!
      TabWidget that contains WebViews and a stack widget of associated line edits.

      Connects up the current tab's signals to this class's signal and uses WebActionMapper
      to proxy the actions.
   */
  class TabWidget : public QTabWidget
  {
      Q_OBJECT

  signals:
      // tab widget signals
      void loadPage(const QString &url);
      void tabsChanged();
      void lastTabClosed();

      // current tab signals
      void setCurrentTitle(const QString &url);
      void showStatusBarMessage(const QString &message);
      void linkHovered(const QString &link);
      void loadProgress(int progress);
      void geometryChangeRequested(const QRect &geometry);
      void menuBarVisibilityChangeRequested(bool visible);
      void statusBarVisibilityChangeRequested(bool visible);
      void toolBarVisibilityChangeRequested(bool visible);
      void printRequested(QWebFrame *frame);

  public:
      TabWidget(QWidget *parent = 0);
      void clear();
      void addWebAction(QAction *action, QWebPage::WebAction webAction);

      QAction *newTabAction() const;
      QAction *closeTabAction() const;
      QAction *recentlyClosedTabsAction() const;
      QAction *nextTabAction() const;
      QAction *previousTabAction() const;

      QWidget *lineEditStack() const;
      QLineEdit *currentLineEdit() const;
      WebView *currentWebView() const;
      WebView *webView(int index) const;
      QLineEdit *lineEdit(int index) const;
      int webViewIndex(WebView *webView) const;

      QByteArray saveState() const;
      bool restoreState(const QByteArray &state);

  protected:
      void mouseDoubleClickEvent(QMouseEvent *event);
      void contextMenuEvent(QContextMenuEvent *event);
      void mouseReleaseEvent(QMouseEvent *event);

  public slots:
      void loadUrlInCurrentTab(const QUrl &url);
      WebView *newTab(bool makeCurrent = true);
      void cloneTab(int index = -1);
      void closeTab(int index = -1);
      void closeOtherTabs(int index);
      void reloadTab(int index = -1);
      void reloadAllTabs();
      void nextTab();
      void previousTab();

  private slots:
      void currentChanged(int index);
      void aboutToShowRecentTabsMenu();
      void aboutToShowRecentTriggeredAction(QAction *action);
      void webViewLoadStarted();
      void webViewIconChanged();
      void webViewTitleChanged(const QString &title);
      void webViewUrlChanged(const QUrl &url);
      void lineEditReturnPressed();
      void windowCloseRequested();
      void moveTab(int fromIndex, int toIndex);

  private:
      QAction *m_recentlyClosedTabsAction;
      QAction *m_newTabAction;
      QAction *m_closeTabAction;
      QAction *m_nextTabAction;
      QAction *m_previousTabAction;

      QMenu *m_recentlyClosedTabsMenu;
      static const int m_recentlyClosedTabsSize = 10;
      QList<QUrl> m_recentlyClosedTabs;
      QList<WebActionMapper*> m_actions;

      QCompleter *m_lineEditCompleter;
      QStackedWidget *m_lineEdits;
      TabBar *m_tabBar;
  };

  #endif // TABWIDGET_H