variable-editor.h

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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2013-2021 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave 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.
//
// Octave 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 Octave; see the file COPYING.  If not, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
 
#if ! defined (octave_variable_editor_h)
#define octave_variable_editor_h 1
 
#include <QHeaderView>
#include <QSignalMapper>
#include <QStackedWidget>
#include <QTableView>
 
#include "dw-main-window.h"
#include "gui-settings.h"
#include "octave-dock-widget.h"
#include "tab-bar.h"
 
class octave_value;
 
class QModelIndex;
class QTextEdit;
class QToolBar;
 
namespace octave
{
  class base_qobject;
 
  class variable_editor_model;
  class variable_editor_view;
 
  // The individual variable subwindow class
 
  class variable_dock_widget : public label_dock_widget
  {
    Q_OBJECT
 
  public:
 
    variable_dock_widget (QWidget *p, base_qobject& oct_qobj);
 
  signals:
 
    void variable_focused_signal (const QString& name);
 
  protected:
 
    virtual void closeEvent (QCloseEvent *e);
 
    void resizeEvent (QResizeEvent *event);
 
  public slots:
 
    void handle_focus_change (QWidget *old, QWidget *now);
 
  private slots:
 
    void change_floating (bool);
 
    void change_existence (bool);
 
    void toplevel_change (bool);
 
    void change_fullscreen (void);
 
  protected:
 
    QFrame *m_frame;
 
#if defined (HAVE_QGUIAPPLICATION)
 
    QAction *m_fullscreen_action;
 
    bool m_full_screen;
 
    bool m_prev_floating;
 
    QRect m_prev_geom;
 
#endif
 
// See Octave bug #53807 and https://bugreports.qt.io/browse/QTBUG-44813
#define QTBUG_44813_FIX_VERSION 0x999999
  signals:
 
    void queue_unfloat_float (void);
 
    void queue_float (void);
 
  protected slots:
 
    void unfloat_float (void);
 
    void refloat (void);
 
#if (QT_VERSION >= 0x050302) && (QT_VERSION <= QTBUG_44813_FIX_VERSION)
  protected:
 
    bool event (QEvent *event);
 
  private:
 
    bool m_waiting_for_mouse_move;
 
    bool m_waiting_for_mouse_button_release;
#endif
  };
 
  class variable_editor_stack : public QStackedWidget
  {
    Q_OBJECT
 
  public:
 
    variable_editor_stack (QWidget *p, base_qobject& oct_qobj);
 
    variable_editor_view *edit_view (void) {return m_edit_view;};
 
    QTextEdit *disp_view (void) {return m_disp_view;};
 
  signals:
 
    void command_signal (const QString& cmd);
 
    void edit_variable_signal (const QString& name, const octave_value& val);
 
  public slots:
 
    void set_editable (bool editable);
 
    void levelUp (void);
 
    void save (void);
 
  private:
 
    QTextEdit *make_disp_view (QWidget *parent);
 
    base_qobject& m_octave_qobj;
 
    variable_editor_view *m_edit_view;
 
    QTextEdit *m_disp_view;
  };
 
 
  class variable_editor_view : public QTableView
  {
    Q_OBJECT
 
  public:
 
    variable_editor_view (QWidget *p, base_qobject& oct_qobj);
 
    void setModel (QAbstractItemModel *model);
 
  signals:
 
    void command_signal (const QString& cmd);
 
    void add_edit_actions_signal (QMenu *menu, const QString& qualifier_string);
 
  public slots:
 
    void createVariable (void);
 
    void transposeContent (void);
 
    QList<int> range_selected (void);
 
    void delete_selected (void);
 
    void clearContent (void);
 
    void cutClipboard (void);
 
    void copyClipboard (void);
 
    void pasteClipboard (void);
 
    void handle_horizontal_scroll_action (int action);
 
    void handle_vertical_scroll_action (int action);
 
    void createContextMenu (const QPoint& pt);
 
    void createColumnMenu (const QPoint& pt);
 
    void createRowMenu (const QPoint& pt);
 
    void selected_command_requested (const QString& cmd);
 
  private:
 
    void add_edit_actions (QMenu *menu, const QString& qualifier_string);
 
    base_qobject& m_octave_qobj;
 
    variable_editor_model *m_var_model;
  };
 
  // Gadgets to keep track of and restore what variable window was in focus
  // just prior to selecting something on the menu bar.
 
  class HoverToolButton : public QToolButton
  {
    Q_OBJECT
 
  public:
 
    HoverToolButton (QWidget *parent = nullptr);
 
  signals:
 
    void hovered_signal (void);
 
    void popup_shown_signal (void);
 
  protected:
 
    bool eventFilter (QObject *obj, QEvent *ev);
  };
 
  class ReturnFocusToolButton : public HoverToolButton
  {
    Q_OBJECT
 
  public:
 
    ReturnFocusToolButton (QWidget *parent = nullptr);
 
  signals:
 
    void about_to_activate (void);
 
  protected:
 
    bool eventFilter (QObject *obj, QEvent *ev);
  };
 
  class ReturnFocusMenu : public QMenu
  {
    Q_OBJECT
 
  public:
 
    ReturnFocusMenu (QWidget *parent = nullptr);
 
  signals:
 
    void about_to_activate (void);
 
  protected:
 
    bool eventFilter (QObject *obj, QEvent *ev);
  };
 
  // The variable editor class
 
  class variable_editor : public octave_dock_widget
  {
    Q_OBJECT
 
  public:
 
    variable_editor (QWidget *parent, base_qobject& oct_qobj);
 
    ~variable_editor (void) = default;
 
    // No copying!
 
    variable_editor (const variable_editor&) = delete;
 
    variable_editor& operator = (const variable_editor&) = delete;
 
    void refresh (void);
 
    void tab_to_front (void);
 
  signals:
 
    void updated (void);
 
    void finished (void);
 
    void command_signal (const QString& cmd);
 
    void refresh_signal (void);
 
    void clear_content_signal (void);
 
    void copy_clipboard_signal (void);
 
    void paste_clipboard_signal (void);
 
    void level_up_signal (void);
 
    void save_signal (void);
 
    void delete_selected_signal (void);
 
  public slots:
 
    void callUpdate (const QModelIndex&, const QModelIndex&);
 
    void notice_settings (const gui_settings *);
 
    void edit_variable (const QString& name, const octave_value& val);
 
    void variable_destroyed (QObject *obj);
 
    void variable_focused (const QString& name);
 
    void record_hovered_focus_variable (void);
 
    void restore_hovered_focus_variable (void);
 
  protected slots:
 
    void closeEvent (QCloseEvent *);
 
    void save (void);
 
    void cutClipboard (void);
 
    void copyClipboard (void);
 
    void pasteClipboard (void);
 
    void levelUp (void);
 
  protected:
 
    void focusInEvent (QFocusEvent *ev);
 
  private:
 
    QAction * add_action (QMenu *menu, const QIcon& icon, const QString& text,
                          const char *member);
 
    dw_main_window *m_main;
 
    QToolBar *m_tool_bar;
 
    int m_default_width;
 
    int m_default_height;
 
    int m_add_font_height;
 
    bool m_use_terminal_font;
 
    bool m_alternate_rows;
 
    QString m_stylesheet;
 
    QFont m_font;
 
    // If use_terminal_font is true then this will be different since
    // "font" will contain the terminal font.
    QFont m_sel_font;
 
    QList<QColor> m_table_colors;
 
    void update_colors (void);
 
    QAction *add_tool_bar_button (const QIcon &icon, const QString &text,
                                  const QObject *receiver, const char *member);
 
    void construct_tool_bar (void);
 
    QString m_current_focus_vname;
 
    QString m_hovered_focus_vname;
 
    QSignalMapper *m_plot_mapper;
 
    QWidget *m_focus_widget;
 
    variable_dock_widget *m_focus_widget_vdw;
  };
}
 
#endif