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1 // Copyright (c) 2009 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 BASE_WINDOW_IMPL_H_ | |
6 #define BASE_WINDOW_IMPL_H_ | |
7 | |
8 #include <atlbase.h> | |
9 #include <atlapp.h> | |
10 #include <atlmisc.h> | |
11 #include <atlcrack.h> | |
12 | |
13 #include <string> | |
14 | |
15 #include "base/gfx/native_widget_types.h" | |
16 #include "base/gfx/rect.h" | |
17 #include "base/logging.h" | |
18 | |
19 namespace base { | |
20 | |
21 // An interface implemented by classes that use message maps. | |
22 // ProcessWindowMessage is implemented by the BEGIN_MESSAGE_MAP_EX macro. | |
23 class MessageMapInterface { | |
24 public: | |
25 // Processes one message from the window's message queue. | |
26 virtual BOOL ProcessWindowMessage(HWND window, | |
27 UINT message, | |
28 WPARAM w_param, | |
29 LPARAM l_param, | |
30 LRESULT& result, | |
31 DWORD msg_mad_id = 0) = 0; | |
32 }; | |
33 | |
34 /////////////////////////////////////////////////////////////////////////////// | |
35 // | |
36 // WindowImpl | |
37 // A convenience class that encapsulates the details of creating and | |
38 // destroying a HWND. This class also hosts the windows procedure used by all | |
39 // Windows. | |
40 // | |
41 /////////////////////////////////////////////////////////////////////////////// | |
42 class WindowImpl : public MessageMapInterface { | |
43 public: | |
44 WindowImpl(); | |
45 virtual ~WindowImpl(); | |
46 | |
47 // Initializes the Window with a parent and an initial desired size. | |
48 void Init(HWND parent, const gfx::Rect& bounds); | |
49 | |
50 // Retrieves the default window icon to use for windows if none is specified. | |
51 virtual HICON GetDefaultWindowIcon() const; | |
52 | |
53 // Returns the HWND associated with this Window. | |
54 HWND hwnd() const { return hwnd_; } | |
55 | |
56 // Sets the window styles. This is ONLY used when the window is created. | |
57 // In other words, if you invoke this after invoking Init, nothing happens. | |
58 void set_window_style(DWORD style) { window_style_ = style; } | |
59 DWORD window_style() const { return window_style_; } | |
60 | |
61 // Sets the extended window styles. See comment about |set_window_style|. | |
62 void set_window_ex_style(DWORD style) { window_ex_style_ = style; } | |
63 DWORD window_ex_style() const { return window_ex_style_; } | |
64 | |
65 // Sets the class style to use. The default is CS_DBLCLKS. | |
66 void set_initial_class_style(UINT class_style) { | |
67 // We dynamically generate the class name, so don't register it globally! | |
68 DCHECK_EQ((class_style & CS_GLOBALCLASS), 0); | |
69 class_style_ = class_style; | |
70 } | |
71 UINT initial_class_style() { return class_style_; } | |
72 | |
73 protected: | |
74 // Handles the WndProc callback for this object. | |
75 virtual LRESULT OnWndProc(UINT message, WPARAM w_param, LPARAM l_param); | |
76 | |
77 private: | |
78 friend class ClassRegistrar; | |
79 | |
80 // The window procedure used by all Windows. | |
81 static LRESULT CALLBACK WndProc(HWND window, | |
82 UINT message, | |
83 WPARAM w_param, | |
84 LPARAM l_param); | |
85 | |
86 // Gets the window class name to use when creating the corresponding HWND. | |
87 // If necessary, this registers the window class. | |
88 std::wstring GetWindowClassName(); | |
89 | |
90 // All classes registered by WidgetWin start with this name. | |
91 static const wchar_t* const kBaseClassName; | |
92 | |
93 // Window Styles used when creating the window. | |
94 DWORD window_style_; | |
95 | |
96 // Window Extended Styles used when creating the window. | |
97 DWORD window_ex_style_; | |
98 | |
99 // Style of the class to use. | |
100 UINT class_style_; | |
101 | |
102 // Our hwnd. | |
103 HWND hwnd_; | |
104 | |
105 DISALLOW_COPY_AND_ASSIGN(WindowImpl); | |
106 }; | |
107 | |
108 } // namespace base | |
109 | |
110 #endif // BASE_WINDOW_IMPL_H_ | |
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