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1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. Use of this | 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. Use of this |
2 // source code is governed by a BSD-style license that can be found in the | 2 // source code is governed by a BSD-style license that can be found in the |
3 // LICENSE file. | 3 // LICENSE file. |
4 | 4 |
5 #include "views/controls/native_control_win.h" | 5 #include "views/controls/native_control_win.h" |
6 | 6 |
7 #include "app/l10n_util_win.h" | 7 #include "app/l10n_util_win.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "base/win_util.h" | 9 #include "base/win_util.h" |
10 | 10 |
11 namespace views { | 11 namespace views { |
12 | 12 |
13 // static | 13 // static |
14 const wchar_t* NativeControlWin::kNativeControlWinKey = | 14 const wchar_t* NativeControlWin::kNativeControlWinKey = |
15 L"__NATIVE_CONTROL_WIN__"; | 15 L"__NATIVE_CONTROL_WIN__"; |
16 | 16 |
17 static const wchar_t* kNativeControlOriginalWndProcKey = | 17 static const wchar_t* kNativeControlOriginalWndProcKey = |
18 L"__NATIVE_CONTROL_ORIGINAL_WNDPROC__"; | 18 L"__NATIVE_CONTROL_ORIGINAL_WNDPROC__"; |
19 | 19 |
20 // static | 20 // static |
21 WNDPROC NativeControlWin::original_wndproc_ = NULL; | 21 WNDPROC NativeControlWin::original_wndproc_ = NULL; |
22 | 22 |
23 //////////////////////////////////////////////////////////////////////////////// | 23 //////////////////////////////////////////////////////////////////////////////// |
24 // NativeControlWin, public: | 24 // NativeControlWin, public: |
25 | 25 |
26 NativeControlWin::NativeControlWin() : HWNDView() { | 26 NativeControlWin::NativeControlWin() { |
27 } | 27 } |
28 | 28 |
29 NativeControlWin::~NativeControlWin() { | 29 NativeControlWin::~NativeControlWin() { |
30 HWND hwnd = GetHWND(); | 30 HWND hwnd = native_view(); |
31 if (hwnd) { | 31 if (hwnd) { |
32 // Destroy the hwnd if it still exists. Otherwise we won't have shut things | 32 // Destroy the hwnd if it still exists. Otherwise we won't have shut things |
33 // down correctly, leading to leaking and crashing if another message | 33 // down correctly, leading to leaking and crashing if another message |
34 // comes in for the hwnd. | 34 // comes in for the hwnd. |
35 Detach(); | 35 Detach(); |
36 DestroyWindow(hwnd); | 36 DestroyWindow(hwnd); |
37 } | 37 } |
38 } | 38 } |
39 | 39 |
40 bool NativeControlWin::ProcessMessage(UINT message, WPARAM w_param, | 40 bool NativeControlWin::ProcessMessage(UINT message, WPARAM w_param, |
41 LPARAM l_param, LRESULT* result) { | 41 LPARAM l_param, LRESULT* result) { |
42 switch (message) { | 42 switch (message) { |
43 case WM_CONTEXTMENU: | 43 case WM_CONTEXTMENU: |
44 ShowContextMenu(gfx::Point(LOWORD(l_param), HIWORD(l_param))); | 44 ShowContextMenu(gfx::Point(LOWORD(l_param), HIWORD(l_param))); |
45 *result = 0; | 45 *result = 0; |
46 return true; | 46 return true; |
47 case WM_CTLCOLORBTN: | 47 case WM_CTLCOLORBTN: |
48 case WM_CTLCOLORSTATIC: | 48 case WM_CTLCOLORSTATIC: |
49 *result = GetControlColor(message, reinterpret_cast<HDC>(w_param), | 49 *result = GetControlColor(message, reinterpret_cast<HDC>(w_param), |
50 GetHWND()); | 50 native_view()); |
51 return true; | 51 return true; |
52 } | 52 } |
53 return false; | 53 return false; |
54 } | 54 } |
55 | 55 |
56 //////////////////////////////////////////////////////////////////////////////// | 56 //////////////////////////////////////////////////////////////////////////////// |
57 // NativeControlWin, View overrides: | 57 // NativeControlWin, View overrides: |
58 | 58 |
59 void NativeControlWin::SetEnabled(bool enabled) { | 59 void NativeControlWin::SetEnabled(bool enabled) { |
60 if (IsEnabled() != enabled) { | 60 if (IsEnabled() != enabled) { |
61 View::SetEnabled(enabled); | 61 View::SetEnabled(enabled); |
62 if (GetHWND()) | 62 if (native_view()) |
63 EnableWindow(GetHWND(), IsEnabled()); | 63 EnableWindow(native_view(), IsEnabled()); |
64 } | 64 } |
65 } | 65 } |
66 | 66 |
67 void NativeControlWin::ViewHierarchyChanged(bool is_add, View* parent, | 67 void NativeControlWin::ViewHierarchyChanged(bool is_add, View* parent, |
68 View* child) { | 68 View* child) { |
| 69 // Call the base class to hide the view if we're being removed. |
| 70 NativeViewHost::ViewHierarchyChanged(is_add, parent, child); |
| 71 |
69 // Create the HWND when we're added to a valid Widget. Many controls need a | 72 // Create the HWND when we're added to a valid Widget. Many controls need a |
70 // parent HWND to function properly. | 73 // parent HWND to function properly. |
71 if (is_add && GetWidget() && !GetHWND()) | 74 if (is_add && GetWidget() && !native_view()) |
72 CreateNativeControl(); | 75 CreateNativeControl(); |
73 | |
74 // Call the base class to hide the view if we're being removed. | |
75 HWNDView::ViewHierarchyChanged(is_add, parent, child); | |
76 } | 76 } |
77 | 77 |
78 void NativeControlWin::VisibilityChanged(View* starting_from, bool is_visible) { | 78 void NativeControlWin::VisibilityChanged(View* starting_from, bool is_visible) { |
79 if (!is_visible) { | 79 if (!is_visible) { |
80 // We destroy the child control HWND when we become invisible because of the | 80 // We destroy the child control HWND when we become invisible because of the |
81 // performance cost of maintaining many HWNDs. | 81 // performance cost of maintaining many HWNDs. |
82 HWND hwnd = GetHWND(); | 82 HWND hwnd = native_view(); |
83 Detach(); | 83 Detach(); |
84 DestroyWindow(hwnd); | 84 DestroyWindow(hwnd); |
85 } else if (!GetHWND()) { | 85 } else if (!native_view()) { |
86 CreateNativeControl(); | 86 CreateNativeControl(); |
87 } | 87 } |
88 } | 88 } |
89 | 89 |
90 void NativeControlWin::Focus() { | 90 void NativeControlWin::Focus() { |
91 DCHECK(GetHWND()); | 91 DCHECK(native_view()); |
92 SetFocus(GetHWND()); | 92 SetFocus(native_view()); |
93 } | 93 } |
94 | 94 |
95 //////////////////////////////////////////////////////////////////////////////// | 95 //////////////////////////////////////////////////////////////////////////////// |
96 // NativeControlWin, protected: | 96 // NativeControlWin, protected: |
97 | 97 |
98 void NativeControlWin::ShowContextMenu(const gfx::Point& location) { | 98 void NativeControlWin::ShowContextMenu(const gfx::Point& location) { |
99 if (!GetContextMenuController()) | 99 if (!GetContextMenuController()) |
100 return; | 100 return; |
101 | 101 |
102 int x = location.x(); | 102 int x = location.x(); |
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116 // this object when it receives messages from it. | 116 // this object when it receives messages from it. |
117 SetProp(native_control, kNativeControlWinKey, this); | 117 SetProp(native_control, kNativeControlWinKey, this); |
118 | 118 |
119 // Subclass the window so we can monitor for key presses. | 119 // Subclass the window so we can monitor for key presses. |
120 original_wndproc_ = | 120 original_wndproc_ = |
121 win_util::SetWindowProc(native_control, | 121 win_util::SetWindowProc(native_control, |
122 &NativeControlWin::NativeControlWndProc); | 122 &NativeControlWin::NativeControlWndProc); |
123 SetProp(native_control, kNativeControlOriginalWndProcKey, original_wndproc_); | 123 SetProp(native_control, kNativeControlOriginalWndProcKey, original_wndproc_); |
124 | 124 |
125 Attach(native_control); | 125 Attach(native_control); |
126 // GetHWND() is now valid. | 126 // native_view() is now valid. |
127 | 127 |
128 // Update the newly created HWND with any resident enabled state. | 128 // Update the newly created HWND with any resident enabled state. |
129 EnableWindow(GetHWND(), IsEnabled()); | 129 EnableWindow(native_view(), IsEnabled()); |
130 | 130 |
131 // This message ensures that the focus border is shown. | 131 // This message ensures that the focus border is shown. |
132 SendMessage(GetHWND(), WM_CHANGEUISTATE, | 132 SendMessage(native_view(), WM_CHANGEUISTATE, |
133 MAKEWPARAM(UIS_CLEAR, UISF_HIDEFOCUS), 0); | 133 MAKEWPARAM(UIS_CLEAR, UISF_HIDEFOCUS), 0); |
134 } | 134 } |
135 | 135 |
136 DWORD NativeControlWin::GetAdditionalExStyle() const { | 136 DWORD NativeControlWin::GetAdditionalExStyle() const { |
137 // If the UI for the view is mirrored, we should make sure we add the | 137 // If the UI for the view is mirrored, we should make sure we add the |
138 // extended window style for a right-to-left layout so the subclass creates | 138 // extended window style for a right-to-left layout so the subclass creates |
139 // a mirrored HWND for the underlying control. | 139 // a mirrored HWND for the underlying control. |
140 DWORD ex_style = 0; | 140 DWORD ex_style = 0; |
141 if (UILayoutIsRightToLeft()) | 141 if (UILayoutIsRightToLeft()) |
142 ex_style |= l10n_util::GetExtendedStyles(); | 142 ex_style |= l10n_util::GetExtendedStyles(); |
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189 } else if (message == WM_DESTROY) { | 189 } else if (message == WM_DESTROY) { |
190 win_util::SetWindowProc(window, native_control->original_wndproc_); | 190 win_util::SetWindowProc(window, native_control->original_wndproc_); |
191 RemoveProp(window, kNativeControlWinKey); | 191 RemoveProp(window, kNativeControlWinKey); |
192 } | 192 } |
193 | 193 |
194 return CallWindowProc(native_control->original_wndproc_, window, message, | 194 return CallWindowProc(native_control->original_wndproc_, window, message, |
195 w_param, l_param); | 195 w_param, l_param); |
196 } | 196 } |
197 | 197 |
198 } // namespace views | 198 } // namespace views |
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