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      1 // Copyright (c) 2011 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 #pragma once
      8 
      9 #include <gtk/gtk.h>
     10 
     11 #include "base/basictypes.h"
     12 #include "base/timer.h"
     13 #include "chrome/browser/ui/gtk/custom_button.h"
     14 #include "chrome/browser/ui/gtk/owned_widget_gtk.h"
     15 #include "content/common/notification_observer.h"
     16 #include "content/common/notification_registrar.h"
     17 #include "ui/base/gtk/gtk_signal.h"
     18 
     19 class Browser;
     20 class GtkThemeService;
     21 class LocationBarViewGtk;
     22 class Task;
     23 
     24 class ReloadButtonGtk : public NotificationObserver {
     25  public:
     26   enum Mode { MODE_RELOAD = 0, MODE_STOP };
     27 
     28   ReloadButtonGtk(LocationBarViewGtk* location_bar, Browser* browser);
     29   ~ReloadButtonGtk();
     30 
     31   GtkWidget* widget() const { return widget_.get(); }
     32 
     33   // Ask for a specified button state.  If |force| is true this will be applied
     34   // immediately.
     35   void ChangeMode(Mode mode, bool force);
     36 
     37   // Provide NotificationObserver implementation.
     38   virtual void Observe(NotificationType type,
     39                        const NotificationSource& source,
     40                        const NotificationDetails& /* details */);
     41 
     42  private:
     43   friend class ReloadButtonGtkTest;
     44 
     45   CHROMEGTK_CALLBACK_0(ReloadButtonGtk, void, OnClicked);
     46   CHROMEGTK_CALLBACK_1(ReloadButtonGtk, gboolean, OnExpose, GdkEventExpose*);
     47   CHROMEGTK_CALLBACK_1(ReloadButtonGtk,
     48                        gboolean,
     49                        OnLeaveNotify,
     50                        GdkEventCrossing*);
     51   CHROMEGTK_CALLBACK_4(ReloadButtonGtk,
     52                        gboolean,
     53                        OnQueryTooltip,
     54                        gint,
     55                        gint,
     56                        gboolean,
     57                        GtkTooltip*);
     58 
     59   void UpdateThemeButtons();
     60 
     61   void OnDoubleClickTimer();
     62   void OnStopToReloadTimer();
     63 
     64   base::OneShotTimer<ReloadButtonGtk> double_click_timer_;
     65   base::OneShotTimer<ReloadButtonGtk> stop_to_reload_timer_;
     66 
     67   // These may be NULL when testing.
     68   LocationBarViewGtk* const location_bar_;
     69   Browser* const browser_;
     70 
     71   // The mode we should be in assuming no timers are running.
     72   Mode intended_mode_;
     73 
     74   // The currently-visible mode - this may differ from the intended mode.
     75   Mode visible_mode_;
     76 
     77   // Used to listen for theme change notifications.
     78   NotificationRegistrar registrar_;
     79 
     80   GtkThemeService* theme_service_;
     81 
     82   CustomDrawButtonBase reload_;
     83   CustomDrawButtonBase stop_;
     84   CustomDrawHoverController hover_controller_;
     85 
     86   OwnedWidgetGtk widget_;
     87 
     88   // The delay times for the timers.  These are members so that tests can modify
     89   // them.
     90   base::TimeDelta double_click_timer_delay_;
     91   base::TimeDelta stop_to_reload_timer_delay_;
     92 
     93   // TESTING ONLY
     94   // True if we should pretend the button is hovered.
     95   bool testing_mouse_hovered_;
     96   // Increments when we would tell the browser to "reload", so
     97   // test code can tell whether we did so (as there may be no |browser_|).
     98   int testing_reload_count_;
     99 
    100   DISALLOW_IMPLICIT_CONSTRUCTORS(ReloadButtonGtk);
    101 };
    102 
    103 #endif  // CHROME_BROWSER_UI_GTK_RELOAD_BUTTON_GTK_H_
    104