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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_CONSTRAINED_WINDOW_GTK_H_
      6 #define CHROME_BROWSER_UI_GTK_CONSTRAINED_WINDOW_GTK_H_
      7 #pragma once
      8 
      9 #include <gtk/gtk.h>
     10 
     11 #include "base/basictypes.h"
     12 #include "base/task.h"
     13 #include "chrome/browser/ui/gtk/owned_widget_gtk.h"
     14 #include "content/browser/tab_contents/constrained_window.h"
     15 #include "ui/base/gtk/gtk_signal.h"
     16 
     17 class TabContents;
     18 typedef struct _GdkColor GdkColor;
     19 #if defined(TOUCH_UI)
     20 class TabContentsViewTouch;
     21 #else
     22 class TabContentsViewGtk;
     23 #endif
     24 
     25 class ConstrainedWindowGtkDelegate {
     26  public:
     27   // Returns the widget that will be put in the constrained window's container.
     28   virtual GtkWidget* GetWidgetRoot() = 0;
     29 
     30   // Returns the widget that should get focus when ConstrainedWindow is focused.
     31   virtual GtkWidget* GetFocusWidget() = 0;
     32 
     33   // Tells the delegate to either delete itself or set up a task to delete
     34   // itself later.
     35   virtual void DeleteDelegate() = 0;
     36 
     37   virtual bool GetBackgroundColor(GdkColor* color);
     38 
     39   // Returns true if hosting ConstrainedWindowGtk should apply default padding.
     40   virtual bool ShouldHaveBorderPadding() const;
     41 
     42  protected:
     43   virtual ~ConstrainedWindowGtkDelegate();
     44 };
     45 
     46 // Constrained window implementation for the GTK port. Unlike the Win32 system,
     47 // ConstrainedWindowGtk doesn't draw draggable fake windows and instead just
     48 // centers the dialog. It is thus an order of magnitude simpler.
     49 class ConstrainedWindowGtk : public ConstrainedWindow {
     50  public:
     51 #if defined(TOUCH_UI)
     52    typedef TabContentsViewTouch TabContentsViewType;
     53 #else
     54    typedef TabContentsViewGtk TabContentsViewType;
     55 #endif
     56 
     57   virtual ~ConstrainedWindowGtk();
     58 
     59   // Overridden from ConstrainedWindow:
     60   virtual void ShowConstrainedWindow();
     61   virtual void CloseConstrainedWindow();
     62   virtual void FocusConstrainedWindow();
     63 
     64   // Returns the TabContents that constrains this Constrained Window.
     65   TabContents* owner() const { return owner_; }
     66 
     67   // Returns the toplevel widget that displays this "window".
     68   GtkWidget* widget() { return border_.get(); }
     69 
     70   // Returns the View that we collaborate with to position ourselves.
     71   TabContentsViewType* ContainingView();
     72 
     73  private:
     74   friend class ConstrainedWindow;
     75 
     76   ConstrainedWindowGtk(TabContents* owner,
     77                        ConstrainedWindowGtkDelegate* delegate);
     78 
     79   // Signal callbacks.
     80   CHROMEGTK_CALLBACK_1(ConstrainedWindowGtk, gboolean, OnKeyPress,
     81                        GdkEventKey*);
     82   CHROMEGTK_CALLBACK_1(ConstrainedWindowGtk, void, OnHierarchyChanged,
     83                        GtkWidget*);
     84 
     85   // The TabContents that owns and constrains this ConstrainedWindow.
     86   TabContents* owner_;
     87 
     88   // The top level widget container that exports to our TabContentsView.
     89   OwnedWidgetGtk border_;
     90 
     91   // Delegate that provides the contents of this constrained window.
     92   ConstrainedWindowGtkDelegate* delegate_;
     93 
     94   // Stores if |ShowConstrainedWindow()| has been called.
     95   bool visible_;
     96 
     97   ScopedRunnableMethodFactory<ConstrainedWindowGtk> factory_;
     98 
     99   DISALLOW_COPY_AND_ASSIGN(ConstrainedWindowGtk);
    100 };
    101 
    102 #endif  // CHROME_BROWSER_UI_GTK_CONSTRAINED_WINDOW_GTK_H_
    103