Qt 5.7 | Qt WebEngine | WebEngine Demo Browser Example | bookmarks.h Example File

Qt 5.7.1 Reference Documentation

# bookmarks.h Example File

webenginewidgets/demobrowser/bookmarks.h

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      #ifndef BOOKMARKS_H
      #define BOOKMARKS_H

      #include <QtCore/QObject>
      #include <QtCore/QAbstractItemModel>

      #include <QtWidgets/QUndoCommand>

      /*!
          Bookmark manager, owner of the bookmarks, loads, saves and basic tasks
        */
      class AutoSaver;
      class BookmarkNode;
      class BookmarksModel;
      class BookmarksManager : public QObject
      {
          Q_OBJECT

      signals:
          void entryAdded(BookmarkNode *item);
          void entryRemoved(BookmarkNode *parent, int row, BookmarkNode *item);
          void entryChanged(BookmarkNode *item);

      public:
          BookmarksManager(QObject *parent = 0);
          ~BookmarksManager();

          void addBookmark(BookmarkNode *parent, BookmarkNode *node, int row = -1);
          void removeBookmark(BookmarkNode *node);
          void setTitle(BookmarkNode *node, const QString &newTitle);
          void setUrl(BookmarkNode *node, const QString &newUrl);
          void changeExpanded();

          BookmarkNode *bookmarks();
          BookmarkNode *menu();
          BookmarkNode *toolbar();

          BookmarksModel *bookmarksModel();
          QUndoStack *undoRedoStack() { return &m_commands; };

      public slots:
          void importBookmarks();
          void exportBookmarks();

      private slots:
          void save() const;

      private:
          void load();

          bool m_loaded;
          AutoSaver *m_saveTimer;
          BookmarkNode *m_bookmarkRootNode;
          BookmarksModel *m_bookmarkModel;
          QUndoStack m_commands;

          friend class RemoveBookmarksCommand;
          friend class ChangeBookmarkCommand;
      };

      class RemoveBookmarksCommand : public QUndoCommand
      {

      public:
          RemoveBookmarksCommand(BookmarksManager *m_bookmarkManagaer, BookmarkNode *parent, int row);
          ~RemoveBookmarksCommand();
          void undo();
          void redo();

      protected:
          int m_row;
          BookmarksManager *m_bookmarkManagaer;
          BookmarkNode *m_node;
          BookmarkNode *m_parent;
          bool m_done;
      };

      class InsertBookmarksCommand : public RemoveBookmarksCommand
      {

      public:
          InsertBookmarksCommand(BookmarksManager *m_bookmarkManagaer,
              BookmarkNode *parent, BookmarkNode *node, int row);
          void undo() { RemoveBookmarksCommand::redo(); }
          void redo() { RemoveBookmarksCommand::undo(); }

      };

      class ChangeBookmarkCommand : public QUndoCommand
      {

      public:
          ChangeBookmarkCommand(BookmarksManager *m_bookmarkManagaer,
              BookmarkNode *node, const QString &newValue, bool title);
          void undo();
          void redo();

      private:
          BookmarksManager *m_bookmarkManagaer;
          bool m_title;
          QString m_oldValue;
          QString m_newValue;
          BookmarkNode *m_node;
      };

      /*!
          BookmarksModel is a QAbstractItemModel wrapper around the BookmarkManager
        */
      class BookmarksModel : public QAbstractItemModel
      {
          Q_OBJECT

      public slots:
          void entryAdded(BookmarkNode *item);
          void entryRemoved(BookmarkNode *parent, int row, BookmarkNode *item);
          void entryChanged(BookmarkNode *item);

      public:
          enum Roles {
              TypeRole = Qt::UserRole + 1,
              UrlRole = Qt::UserRole + 2,
              UrlStringRole = Qt::UserRole + 3,
              SeparatorRole = Qt::UserRole + 4
          };

          BookmarksModel(BookmarksManager *bookmarkManager, QObject *parent = 0);
          inline BookmarksManager *bookmarksManager() const { return m_bookmarksManager; }

          QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
          QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
          int columnCount(const QModelIndex &parent = QModelIndex()) const;
          int rowCount(const QModelIndex &parent = QModelIndex()) const;
          QModelIndex index(int, int, const QModelIndex& = QModelIndex()) const;
          QModelIndex parent(const QModelIndex& index= QModelIndex()) const;
          Qt::ItemFlags flags(const QModelIndex &index) const;
          Qt::DropActions supportedDropActions () const;
          bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex());
          bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
          QMimeData *mimeData(const QModelIndexList &indexes) const;
          QStringList mimeTypes() const;
          bool dropMimeData(const QMimeData *data,
              Qt::DropAction action, int row, int column, const QModelIndex &parent);
          bool hasChildren(const QModelIndex &parent = QModelIndex()) const;

          BookmarkNode *node(const QModelIndex &index) const;
          QModelIndex index(BookmarkNode *node) const;

      private:

          bool m_endMacro;
          BookmarksManager *m_bookmarksManager;
      };

      // Menu that is dynamically populated from the bookmarks
      #include "modelmenu.h"
      class BookmarksMenu : public ModelMenu
      {
          Q_OBJECT

      signals:
          void openUrl(const QUrl &url);

      public:
           BookmarksMenu(QWidget *parent = 0);
           void setInitialActions(QList<QAction*> actions);

      protected:
          bool prePopulated();

      private slots:
          void activated(const QModelIndex &index);

      private:
          BookmarksManager *m_bookmarksManager;
          QList<QAction*> m_initialActions;
      };

      /*
          Proxy model that filters out the bookmarks so only the folders
          are left behind.  Used in the add bookmark dialog combobox.
       */
      #include <QtCore/QSortFilterProxyModel>
      class AddBookmarkProxyModel : public QSortFilterProxyModel
      {
          Q_OBJECT
      public:
          AddBookmarkProxyModel(QObject * parent = 0);
          int columnCount(const QModelIndex & parent = QModelIndex()) const;

      protected:
          bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const;
      };

      /*!
          Add bookmark dialog
       */
      #include "ui_addbookmarkdialog.h"
      class AddBookmarkDialog : public QDialog, public Ui_AddBookmarkDialog
      {
          Q_OBJECT

      public:
          AddBookmarkDialog(const QString &url, const QString &title, QWidget *parent = 0, BookmarksManager *bookmarkManager = 0);

      private slots:
          void accept();

      private:
          QString m_url;
          BookmarksManager *m_bookmarksManager;
          AddBookmarkProxyModel *m_proxyModel;
      };

      #include "ui_bookmarks.h"
      class TreeProxyModel;
      class BookmarksDialog : public QDialog, public Ui_BookmarksDialog
      {
          Q_OBJECT

      signals:
          void openUrl(const QUrl &url);

      public:
          BookmarksDialog(QWidget *parent = 0, BookmarksManager *manager = 0);
          ~BookmarksDialog();

      private slots:
          void customContextMenuRequested(const QPoint &pos);
          void open();
          void newFolder();

      private:
          void expandNodes(BookmarkNode *node);
          bool saveExpandedNodes(const QModelIndex &parent);

          BookmarksManager *m_bookmarksManager;
          BookmarksModel *m_bookmarksModel;
          TreeProxyModel *m_proxyModel;
      };

      #include <QtWidgets/QToolBar>
      class BookmarksToolBar : public QToolBar
      {
          Q_OBJECT

      signals:
          void openUrl(const QUrl &url);

      public:
          BookmarksToolBar(BookmarksModel *model, QWidget *parent = 0);
          void setRootIndex(const QModelIndex &index);
          QModelIndex rootIndex() const;

      protected:
          void dragEnterEvent(QDragEnterEvent *event);
          void dropEvent(QDropEvent *event);

      private slots:
          void triggered(QAction *action);
          void activated(const QModelIndex &index);
          void build();

      private:
          BookmarksModel *m_bookmarksModel;
          QPersistentModelIndex m_root;
      };

      #endif // BOOKMARKS_H