chrome/browser/ui/gtk/reload_button_gtk.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_GTK_RELOAD_BUTTON_GTK_H_
   6 #define CHROME_BROWSER_UI_GTK_RELOAD_BUTTON_GTK_H_
   7
   8 #include <gtk/gtk.h>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/timer/timer.h"
  13 #include "chrome/browser/ui/gtk/custom_button.h"
  14 #include "chrome/browser/ui/gtk/menu_gtk.h"
  15 #include "content/public/browser/notification_observer.h"
  16 #include "content/public/browser/notification_registrar.h"
  17 #include "ui/base/gtk/gtk_signal.h"
  18 #include "ui/base/gtk/owned_widget_gtk.h"
  19 #include "ui/base/models/simple_menu_model.h"
  20
  21 class Browser;
  22 class GtkThemeService;
  23 class LocationBarViewGtk;
  24
  25 class ReloadButtonGtk : public content::NotificationObserver,
  26                         MenuGtk::Delegate,
  27                         public ui::SimpleMenuModel::Delegate {
  28  public:
  29   enum Mode { MODE_RELOAD = 0, MODE_STOP };
  30
  31   ReloadButtonGtk(LocationBarViewGtk* location_bar, Browser* browser);
  32   virtual ~ReloadButtonGtk();
  33
  34   GtkWidget* widget() const { return widget_.get(); }
  35
  36   // Ask for a specified button state.  If |force| is true this will be applied
  37   // immediately.
  38   void ChangeMode(Mode mode, bool force);
  39
  40   // Provide content::NotificationObserver implementation.
  41   virtual void Observe(int type,
  42                        const content::NotificationSource& source,
  43                        const content::NotificationDetails& details) OVERRIDE;
  44
  45   // Provide MenuGtk::Delegate implementation.
  46   virtual void StoppedShowing() OVERRIDE;
  47
  48   // Provide SimpleMenuModel::Delegate implementation.
  49   virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
  50   virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
  51   virtual bool IsCommandIdVisible(int command_id) const OVERRIDE;
  52   virtual bool GetAcceleratorForCommandId(
  53      int command_id,
  54      ui::Accelerator* accelerator) OVERRIDE;
  55   virtual void ExecuteCommand(int command_id, int event_flags) OVERRIDE;
  56
  57  private:
  58   friend class ReloadButtonGtkTest;
  59
  60   CHROMEGTK_CALLBACK_0(ReloadButtonGtk, void, OnClicked);
  61   CHROMEGTK_CALLBACK_1(ReloadButtonGtk, gboolean, OnExpose, GdkEventExpose*);
  62   CHROMEGTK_CALLBACK_1(ReloadButtonGtk,
  63                        gboolean,
  64                        OnLeaveNotify,
  65                        GdkEventCrossing*);
  66   CHROMEGTK_CALLBACK_4(ReloadButtonGtk,
  67                        gboolean,
  68                        OnQueryTooltip,
  69                        gint,
  70                        gint,
  71                        gboolean,
  72                        GtkTooltip*);
  73
  74   // Starts a timer to show the dropdown menu.
  75   CHROMEGTK_CALLBACK_1(ReloadButtonGtk,
  76                        gboolean,
  77                        OnButtonPress,
  78                        GdkEventButton*);
  79
  80   // If there is a timer to show the dropdown menu, and the mouse has moved
  81   // sufficiently down the screen, cancel the timer and immediately show the
  82   // menu.
  83   CHROMEGTK_CALLBACK_1(ReloadButtonGtk,
  84                        gboolean,
  85                        OnMouseMove,
  86                        GdkEventMotion*);
  87
  88   void UpdateThemeButtons();
  89
  90   void OnDoubleClickTimer();
  91   void OnStopToReloadTimer();
  92
  93   // Shows the dropdown menu.
  94   void ShowReloadMenu(int button, guint32 event_time);
  95
  96   // Do actual reload. command == 0, indicates default dehaviour.
  97   void DoReload(int command);
  98
  99   // Indicates if reload menu is currently enabled.
 100   bool ReloadMenuEnabled();
 101   void ClearCache();
 102
 103   base::OneShotTimer<ReloadButtonGtk> double_click_timer_;
 104   base::OneShotTimer<ReloadButtonGtk> stop_to_reload_timer_;
 105
 106   // These may be NULL when testing.
 107   LocationBarViewGtk* const location_bar_;
 108   Browser* const browser_;
 109
 110   // The mode we should be in assuming no timers are running.
 111   Mode intended_mode_;
 112
 113   // The currently-visible mode - this may differ from the intended mode.
 114   Mode visible_mode_;
 115
 116   // Used to listen for theme change notifications.
 117   content::NotificationRegistrar registrar_;
 118
 119   GtkThemeService* theme_service_;
 120
 121   CustomDrawButtonBase reload_;
 122   CustomDrawButtonBase stop_;
 123   CustomDrawHoverController hover_controller_;
 124
 125   ui::OwnedWidgetGtk widget_;
 126
 127   // The delay times for the timers.  These are members so that tests can modify
 128   // them.
 129   base::TimeDelta double_click_timer_delay_;
 130   base::TimeDelta stop_to_reload_timer_delay_;
 131
 132   // The y position of the last mouse down event.
 133   int y_position_of_last_press_;
 134   // The menu gets reset every time it is shown.
 135   scoped_ptr<MenuGtk> menu_;
 136   // The dropdown menu model.
 137   scoped_ptr<ui::SimpleMenuModel> menu_model_;
 138   // Indicates if menu is currently shown.
 139   bool menu_visible_;
 140
 141   // TESTING ONLY
 142   // True if we should pretend the button is hovered.
 143   bool testing_mouse_hovered_;
 144   // Increments when we would tell the browser to "reload", so
 145   // test code can tell whether we did so (as there may be no |browser_|).
 146   int testing_reload_count_;
 147
 148   base::WeakPtrFactory<ReloadButtonGtk> weak_factory_;
 149
 150   DISALLOW_IMPLICIT_CONSTRUCTORS(ReloadButtonGtk);
 151 };
 152
 153 #endif  // CHROME_BROWSER_UI_GTK_RELOAD_BUTTON_GTK_H_