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1 // Copyright (c) 2014 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CONTENT_BROWSER_RENDERER_HOST_LEGACY_RENDER_WIDGET_HOST_WIN_H_ | 5 #ifndef CONTENT_BROWSER_RENDERER_HOST_LEGACY_RENDER_WIDGET_HOST_WIN_H_ |
6 #define CONTENT_BROWSER_RENDERER_HOST_LEGACY_RENDER_WIDGET_HOST_WIN_H_ | 6 #define CONTENT_BROWSER_RENDERER_HOST_LEGACY_RENDER_WIDGET_HOST_WIN_H_ |
7 | 7 |
8 #include <atlbase.h> | 8 #include <atlbase.h> |
9 #include <atlwin.h> | 9 #include <atlwin.h> |
10 #include <atlcrack.h> | 10 #include <atlcrack.h> |
11 #include <oleacc.h> | 11 #include <oleacc.h> |
12 | 12 |
13 #include "base/basictypes.h" | 13 #include "base/basictypes.h" |
14 #include "base/win/scoped_comptr.h" | 14 #include "base/win/scoped_comptr.h" |
15 #include "content/common/content_export.h" | 15 #include "content/common/content_export.h" |
16 #include "ui/gfx/rect.h" | 16 #include "ui/gfx/rect.h" |
17 | 17 |
18 namespace ui { | 18 namespace ui { |
19 class WindowEventTarget; | 19 class WindowEventTarget; |
20 } | 20 } |
21 | 21 |
22 namespace content { | 22 namespace content { |
23 class BrowserAccessibilityManagerWin; | 23 class BrowserAccessibilityManager; |
24 class LegacyRenderWidgetHostHWND; | |
24 class RenderWidgetHostViewAura; | 25 class RenderWidgetHostViewAura; |
25 | 26 |
26 // Reasons for the existence of this class outlined below:- | 27 // Reasons for the existence of this class outlined below:- |
27 // 1. Some screen readers expect every tab / every unique web content container | 28 // 1. Some screen readers expect every tab / every unique web content container |
28 // to be in its own HWND with class name Chrome_RenderWidgetHostHWND. | 29 // to be in its own HWND with class name Chrome_RenderWidgetHostHWND. |
29 // With Aura there is one main HWND which comprises the whole browser window | 30 // With Aura there is one main HWND which comprises the whole browser window |
30 // or the whole desktop. So, we need a fake HWND with the window class as | 31 // or the whole desktop. So, we need a fake HWND with the window class as |
31 // Chrome_RenderWidgetHostHWND as the root of the accessibility tree for | 32 // Chrome_RenderWidgetHostHWND as the root of the accessibility tree for |
32 // each tab. | 33 // each tab. |
33 // 2. There are legacy drivers for trackpads/trackpoints which have special | 34 // 2. There are legacy drivers for trackpads/trackpoints which have special |
34 // code for sending mouse wheel and scroll events to the | 35 // code for sending mouse wheel and scroll events to the |
35 // Chrome_RenderWidgetHostHWND window. | 36 // Chrome_RenderWidgetHostHWND window. |
36 // 3. Windowless NPAPI plugins like Flash and Silverlight which expect the | 37 // 3. Windowless NPAPI plugins like Flash and Silverlight which expect the |
37 // container window to have the same bounds as the web page. In Aura, the | 38 // container window to have the same bounds as the web page. In Aura, the |
38 // default container window is the whole window which includes the web page | 39 // default container window is the whole window which includes the web page |
39 // WebContents, etc. This causes the plugin mouse event calculations to | 40 // WebContents, etc. This causes the plugin mouse event calculations to |
40 // fail. | 41 // fail. |
41 // We should look to get rid of this code when all of the above are fixed. | 42 // We should look to get rid of this code when all of the above are fixed. |
42 | 43 |
44 // A delegate interface for LegacyRenderWidgetHostHWND to query its owner. | |
ananta
2014/07/14 18:51:08
The comment here needs to be reworded?. query its
dmazzoni
2014/07/29 23:03:05
Done.
| |
45 class CONTENT_EXPORT LegacyRenderWidgetHostHWNDDelegate { | |
46 public: | |
47 // Get the root BrowserAccessibilityManager representing the accessible | |
48 // state of this WebContents. This should always return a valid object, | |
49 // but the object may change as the user navigates. | |
50 virtual BrowserAccessibilityManager* GetRootBrowserAccessibilityManager() = 0; | |
51 | |
52 // This will be called when the HWND is destroyed. | |
53 virtual void OnLegacyHwndDestroyed(LegacyRenderWidgetHostHWND* owner) = 0; | |
54 }; | |
55 | |
43 // This class implements a child HWND with the same size as the content area, | 56 // This class implements a child HWND with the same size as the content area, |
44 // that delegates its accessibility implementation to the root of the | 57 // that delegates its accessibility implementation to the root of the |
45 // BrowserAccessibilityManager tree. This HWND is hooked up as the parent of | 58 // BrowserAccessibilityManager tree. This HWND is hooked up as the parent of |
46 // the root object in the BrowserAccessibilityManager tree, so when any | 59 // the root object in the BrowserAccessibilityManager tree, so when any |
47 // accessibility client calls ::WindowFromAccessibleObject, they get this | 60 // accessibility client calls ::WindowFromAccessibleObject, they get this |
48 // HWND instead of the DesktopWindowTreeHostWin. | 61 // HWND instead of the DesktopWindowTreeHostWin. |
49 class CONTENT_EXPORT LegacyRenderWidgetHostHWND | 62 class CONTENT_EXPORT LegacyRenderWidgetHostHWND |
50 : public ATL::CWindowImpl<LegacyRenderWidgetHostHWND, | 63 : public ATL::CWindowImpl<LegacyRenderWidgetHostHWND, |
51 NON_EXPORTED_BASE(ATL::CWindow), | 64 NON_EXPORTED_BASE(ATL::CWindow), |
52 ATL::CWinTraits<WS_CHILD> > { | 65 ATL::CWinTraits<WS_CHILD> > { |
53 public: | 66 public: |
67 virtual ~LegacyRenderWidgetHostHWND(); | |
68 | |
54 DECLARE_WND_CLASS_EX(L"Chrome_RenderWidgetHostHWND", CS_DBLCLKS, 0); | 69 DECLARE_WND_CLASS_EX(L"Chrome_RenderWidgetHostHWND", CS_DBLCLKS, 0); |
55 | 70 |
56 typedef ATL::CWindowImpl<LegacyRenderWidgetHostHWND, | 71 typedef ATL::CWindowImpl<LegacyRenderWidgetHostHWND, |
57 NON_EXPORTED_BASE(ATL::CWindow), | 72 NON_EXPORTED_BASE(ATL::CWindow), |
58 ATL::CWinTraits<WS_CHILD> > Base; | 73 ATL::CWinTraits<WS_CHILD> > Base; |
59 | 74 |
60 // Creates and returns an instance of the LegacyRenderWidgetHostHWND class on | 75 // Creates and returns an instance of the LegacyRenderWidgetHostHWND class on |
61 // successful creation of a child window parented to the parent window passed | 76 // successful creation of a child window parented to the parent window passed |
62 // in. | 77 // in. |
63 static LegacyRenderWidgetHostHWND* Create(HWND parent); | 78 static LegacyRenderWidgetHostHWND* Create( |
79 HWND parent, | |
80 LegacyRenderWidgetHostHWNDDelegate* delegate); | |
64 | 81 |
65 // Destroys the HWND managed by this class. | 82 // Create an instance of LegacyRenderWidgetHostHWND purely for testing. |
66 void Destroy(); | 83 // Its parent is the desktop window and it always delegates to one |
84 // BrowserAccessibilityManager. It deletes itself when the HWND is | |
85 // destroyed. | |
86 static LegacyRenderWidgetHostHWND* CreateForTesting( | |
87 BrowserAccessibilityManager* manager); | |
67 | 88 |
68 BEGIN_MSG_MAP_EX(LegacyRenderWidgetHostHWND) | 89 BEGIN_MSG_MAP_EX(LegacyRenderWidgetHostHWND) |
69 MESSAGE_HANDLER_EX(WM_GETOBJECT, OnGetObject) | 90 MESSAGE_HANDLER_EX(WM_GETOBJECT, OnGetObject) |
70 MESSAGE_RANGE_HANDLER(WM_KEYFIRST, WM_KEYLAST, OnKeyboardRange) | 91 MESSAGE_RANGE_HANDLER(WM_KEYFIRST, WM_KEYLAST, OnKeyboardRange) |
71 MESSAGE_HANDLER_EX(WM_PAINT, OnPaint) | 92 MESSAGE_HANDLER_EX(WM_PAINT, OnPaint) |
72 MESSAGE_HANDLER_EX(WM_NCPAINT, OnNCPaint) | 93 MESSAGE_HANDLER_EX(WM_NCPAINT, OnNCPaint) |
73 MESSAGE_HANDLER_EX(WM_ERASEBKGND, OnEraseBkGnd) | 94 MESSAGE_HANDLER_EX(WM_ERASEBKGND, OnEraseBkGnd) |
74 MESSAGE_RANGE_HANDLER(WM_MOUSEFIRST, WM_MOUSELAST, OnMouseRange) | 95 MESSAGE_RANGE_HANDLER(WM_MOUSEFIRST, WM_MOUSELAST, OnMouseRange) |
75 MESSAGE_HANDLER_EX(WM_MOUSELEAVE, OnMouseLeave) | 96 MESSAGE_HANDLER_EX(WM_MOUSELEAVE, OnMouseLeave) |
76 MESSAGE_HANDLER_EX(WM_MOUSEACTIVATE, OnMouseActivate) | 97 MESSAGE_HANDLER_EX(WM_MOUSEACTIVATE, OnMouseActivate) |
77 MESSAGE_HANDLER_EX(WM_SETCURSOR, OnSetCursor) | 98 MESSAGE_HANDLER_EX(WM_SETCURSOR, OnSetCursor) |
78 MESSAGE_HANDLER_EX(WM_TOUCH, OnTouch) | 99 MESSAGE_HANDLER_EX(WM_TOUCH, OnTouch) |
79 MESSAGE_HANDLER_EX(WM_HSCROLL, OnScroll) | 100 MESSAGE_HANDLER_EX(WM_HSCROLL, OnScroll) |
80 MESSAGE_HANDLER_EX(WM_VSCROLL, OnScroll) | 101 MESSAGE_HANDLER_EX(WM_VSCROLL, OnScroll) |
81 MESSAGE_HANDLER_EX(WM_NCHITTEST, OnNCHitTest) | 102 MESSAGE_HANDLER_EX(WM_NCHITTEST, OnNCHitTest) |
82 MESSAGE_RANGE_HANDLER(WM_NCMOUSEMOVE, WM_NCXBUTTONDBLCLK, | 103 MESSAGE_RANGE_HANDLER(WM_NCMOUSEMOVE, WM_NCXBUTTONDBLCLK, |
83 OnMouseRange) | 104 OnMouseRange) |
84 MESSAGE_HANDLER_EX(WM_NCCALCSIZE, OnNCCalcSize) | 105 MESSAGE_HANDLER_EX(WM_NCCALCSIZE, OnNCCalcSize) |
85 MESSAGE_HANDLER_EX(WM_SIZE, OnSize) | 106 MESSAGE_HANDLER_EX(WM_SIZE, OnSize) |
86 END_MSG_MAP() | 107 END_MSG_MAP() |
87 | 108 |
109 // May be deleted at any time by Windows! Other classes should never store | |
110 // this value. | |
88 HWND hwnd() { return m_hWnd; } | 111 HWND hwnd() { return m_hWnd; } |
89 | 112 |
90 // Called when the child window is to be reparented to a new window. | 113 // Called when the child window is to be reparented to a new window. |
91 // The |parent| parameter contains the new parent window. | 114 // The |parent| parameter contains the new parent window. |
92 void UpdateParent(HWND parent); | 115 void UpdateParent(HWND parent); |
93 HWND GetParent(); | 116 HWND GetParent(); |
94 | 117 |
95 IAccessible* window_accessible() { return window_accessible_; } | 118 IAccessible* window_accessible() { return window_accessible_; } |
96 | 119 |
97 void set_browser_accessibility_manager( | |
98 content::BrowserAccessibilityManagerWin* manager) { | |
99 manager_ = manager; | |
100 } | |
101 | |
102 void OnManagerDeleted(content::BrowserAccessibilityManagerWin* manager); | |
103 | |
104 // Functions to show and hide the window. | 120 // Functions to show and hide the window. |
105 void Show(); | 121 void Show(); |
106 void Hide(); | 122 void Hide(); |
107 | 123 |
108 // Resizes the window to the bounds passed in. | 124 // Resizes the window to the bounds passed in. |
109 void SetBounds(const gfx::Rect& bounds); | 125 void SetBounds(const gfx::Rect& bounds); |
110 | 126 |
111 // The pointer to the containing RenderWidgetHostViewAura instance is passed | |
112 // here. | |
113 void set_host(RenderWidgetHostViewAura* host) { | |
114 host_ = host; | |
115 } | |
116 | |
117 protected: | 127 protected: |
118 virtual void OnFinalMessage(HWND hwnd) OVERRIDE; | 128 virtual void OnFinalMessage(HWND hwnd) OVERRIDE; |
119 | 129 |
120 private: | 130 private: |
121 LegacyRenderWidgetHostHWND(HWND parent); | 131 LegacyRenderWidgetHostHWND(HWND parent, |
122 ~LegacyRenderWidgetHostHWND(); | 132 LegacyRenderWidgetHostHWNDDelegate* delegate); |
123 | 133 |
124 bool Init(); | 134 bool Init(); |
125 | 135 |
126 // Returns the target to which the windows input events are forwarded. | 136 // Returns the target to which the windows input events are forwarded. |
127 static ui::WindowEventTarget* GetWindowEventTarget(HWND parent); | 137 static ui::WindowEventTarget* GetWindowEventTarget(HWND parent); |
128 | 138 |
129 LRESULT OnEraseBkGnd(UINT message, WPARAM w_param, LPARAM l_param); | 139 LRESULT OnEraseBkGnd(UINT message, WPARAM w_param, LPARAM l_param); |
130 LRESULT OnGetObject(UINT message, WPARAM w_param, LPARAM l_param); | 140 LRESULT OnGetObject(UINT message, WPARAM w_param, LPARAM l_param); |
131 LRESULT OnKeyboardRange(UINT message, WPARAM w_param, LPARAM l_param, | 141 LRESULT OnKeyboardRange(UINT message, WPARAM w_param, LPARAM l_param, |
132 BOOL& handled); | 142 BOOL& handled); |
133 LRESULT OnMouseLeave(UINT message, WPARAM w_param, LPARAM l_param); | 143 LRESULT OnMouseLeave(UINT message, WPARAM w_param, LPARAM l_param); |
134 LRESULT OnMouseRange(UINT message, WPARAM w_param, LPARAM l_param, | 144 LRESULT OnMouseRange(UINT message, WPARAM w_param, LPARAM l_param, |
135 BOOL& handled); | 145 BOOL& handled); |
136 LRESULT OnMouseActivate(UINT message, WPARAM w_param, LPARAM l_param); | 146 LRESULT OnMouseActivate(UINT message, WPARAM w_param, LPARAM l_param); |
137 LRESULT OnTouch(UINT message, WPARAM w_param, LPARAM l_param); | 147 LRESULT OnTouch(UINT message, WPARAM w_param, LPARAM l_param); |
138 LRESULT OnScroll(UINT message, WPARAM w_param, LPARAM l_param); | 148 LRESULT OnScroll(UINT message, WPARAM w_param, LPARAM l_param); |
139 LRESULT OnNCHitTest(UINT message, WPARAM w_param, LPARAM l_param); | 149 LRESULT OnNCHitTest(UINT message, WPARAM w_param, LPARAM l_param); |
140 | 150 |
141 LRESULT OnNCPaint(UINT message, WPARAM w_param, LPARAM l_param); | 151 LRESULT OnNCPaint(UINT message, WPARAM w_param, LPARAM l_param); |
142 LRESULT OnPaint(UINT message, WPARAM w_param, LPARAM l_param); | 152 LRESULT OnPaint(UINT message, WPARAM w_param, LPARAM l_param); |
143 LRESULT OnSetCursor(UINT message, WPARAM w_param, LPARAM l_param); | 153 LRESULT OnSetCursor(UINT message, WPARAM w_param, LPARAM l_param); |
144 LRESULT OnNCCalcSize(UINT message, WPARAM w_param, LPARAM l_param); | 154 LRESULT OnNCCalcSize(UINT message, WPARAM w_param, LPARAM l_param); |
145 LRESULT OnSize(UINT message, WPARAM w_param, LPARAM l_param); | 155 LRESULT OnSize(UINT message, WPARAM w_param, LPARAM l_param); |
146 LRESULT OnSysCommand(UINT message, WPARAM w_param, LPARAM l_param); | 156 LRESULT OnSysCommand(UINT message, WPARAM w_param, LPARAM l_param); |
147 | 157 |
148 content::BrowserAccessibilityManagerWin* manager_; | 158 LegacyRenderWidgetHostHWNDDelegate* delegate_; |
159 BrowserAccessibilityManager* manager_for_testing_; | |
149 base::win::ScopedComPtr<IAccessible> window_accessible_; | 160 base::win::ScopedComPtr<IAccessible> window_accessible_; |
150 | 161 |
151 // Set to true if we turned on mouse tracking. | 162 // Set to true if we turned on mouse tracking. |
152 bool mouse_tracking_enabled_; | 163 bool mouse_tracking_enabled_; |
153 | 164 |
154 RenderWidgetHostViewAura* host_; | |
155 | |
156 DISALLOW_COPY_AND_ASSIGN(LegacyRenderWidgetHostHWND); | 165 DISALLOW_COPY_AND_ASSIGN(LegacyRenderWidgetHostHWND); |
157 }; | 166 }; |
158 | 167 |
159 } // namespace content | 168 } // namespace content |
160 | 169 |
161 #endif // CONTENT_BROWSER_RENDERER_HOST_LEGACY_RENDER_WIDGET_HOST_WIN_H_ | 170 #endif // CONTENT_BROWSER_RENDERER_HOST_LEGACY_RENDER_WIDGET_HOST_WIN_H_ |
162 | |
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