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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 VIEWS_WIDGET_NATIVE_WIDGET_DELEGATE_H_ | |
6 #define VIEWS_WIDGET_NATIVE_WIDGET_DELEGATE_H_ | |
7 #pragma once | |
8 | |
9 #include "views/views_export.h" | |
10 #include "ui/base/events.h" | |
11 | |
12 namespace gfx { | |
13 class Canvas; | |
14 class Point; | |
15 class Size; | |
16 } | |
17 | |
18 namespace views { | |
19 class InputMethod; | |
20 class KeyEvent; | |
21 class MouseEvent; | |
22 class TouchEvent; | |
23 | |
24 namespace internal { | |
25 | |
26 //////////////////////////////////////////////////////////////////////////////// | |
27 // NativeWidgetDelegate | |
28 // | |
29 // An interface implemented by the object that handles events sent by a | |
30 // NativeWidget implementation. | |
31 // | |
32 class VIEWS_EXPORT NativeWidgetDelegate { | |
33 public: | |
34 virtual ~NativeWidgetDelegate() {} | |
35 | |
36 // Returns true if the window is modal. | |
37 virtual bool IsModal() const = 0; | |
38 | |
39 // Returns true if the window is a dialog box. | |
40 virtual bool IsDialogBox() const = 0; | |
41 | |
42 // Returns true if the window can be activated. | |
43 virtual bool CanActivate() const = 0; | |
44 | |
45 virtual bool IsInactiveRenderingDisabled() const = 0; | |
46 virtual void EnableInactiveRendering() = 0; | |
47 | |
48 // Called when the activation state of a window has changed. | |
49 virtual void OnNativeWidgetActivationChanged(bool active) = 0; | |
50 | |
51 // Called when native focus moves from one native view to another. | |
52 virtual void OnNativeFocus(gfx::NativeView focused_view) = 0; | |
53 virtual void OnNativeBlur(gfx::NativeView focused_view) = 0; | |
54 | |
55 // Called when the window is shown/hidden. | |
56 virtual void OnNativeWidgetVisibilityChanged(bool visible) = 0; | |
57 | |
58 // Called when the native widget is created. | |
59 virtual void OnNativeWidgetCreated() = 0; | |
60 | |
61 // Called just before the native widget is destroyed. This is the delegate's | |
62 // last chance to do anything with the native widget handle. | |
63 virtual void OnNativeWidgetDestroying() = 0; | |
64 | |
65 // Called just after the native widget is destroyed. | |
66 virtual void OnNativeWidgetDestroyed() = 0; | |
67 | |
68 // Returns the smallest size the window can be resized to by the user. | |
69 virtual gfx::Size GetMinimumSize() = 0; | |
70 | |
71 // Called when the NativeWidget changed size to |new_size|. | |
72 virtual void OnNativeWidgetSizeChanged(const gfx::Size& new_size) = 0; | |
73 | |
74 // Called when the user begins/ends to change the bounds of the window. | |
75 virtual void OnNativeWidgetBeginUserBoundsChange() = 0; | |
76 virtual void OnNativeWidgetEndUserBoundsChange() = 0; | |
77 | |
78 // Returns true if the delegate has a FocusManager. | |
79 virtual bool HasFocusManager() const = 0; | |
80 | |
81 // Paints the widget using acceleration. If the widget is not using | |
82 // accelerated painting this returns false and does nothing. | |
83 virtual bool OnNativeWidgetPaintAccelerated( | |
84 const gfx::Rect& dirty_region) = 0; | |
85 | |
86 // Paints the rootview in the canvas. This will also refresh the compositor | |
87 // tree if necessary when accelerated painting is enabled. | |
88 virtual void OnNativeWidgetPaint(gfx::Canvas* canvas) = 0; | |
89 | |
90 // Returns the non-client component (see ui/base/hit_test.h) containing | |
91 // |point|, in client coordinates. | |
92 virtual int GetNonClientComponent(const gfx::Point& point) = 0; | |
93 | |
94 // Mouse and key event handlers. | |
95 virtual bool OnKeyEvent(const KeyEvent& event) = 0; | |
96 virtual bool OnMouseEvent(const MouseEvent& event) = 0; | |
97 virtual void OnMouseCaptureLost() = 0; | |
98 virtual ui::TouchStatus OnTouchEvent(const TouchEvent& event) = 0; | |
99 | |
100 // Runs the specified native command. Returns true if the command is handled. | |
101 virtual bool ExecuteCommand(int command_id) = 0; | |
102 | |
103 // Returns the input method of the widget this delegate is associated with. | |
104 // Note that this does not use the top level widget, so may return NULL | |
105 // if the widget doesn't have input method. | |
106 virtual InputMethod* GetInputMethodDirect() = 0; | |
107 | |
108 // | |
109 virtual Widget* AsWidget() = 0; | |
110 virtual const Widget* AsWidget() const = 0; | |
111 }; | |
112 | |
113 } // namespace internal | |
114 } // namespace views | |
115 | |
116 #endif // VIEWS_WIDGET_NATIVE_WIDGET_DELEGATE_H_ | |
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