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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 #import "chrome/browser/ui/cocoa/chrome_event_processing_window.h" | 5 #import "chrome/browser/ui/cocoa/chrome_event_processing_window.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "chrome/browser/global_keyboard_shortcuts_mac.h" | 8 #include "chrome/browser/global_keyboard_shortcuts_mac.h" |
9 #import "chrome/browser/ui/cocoa/browser_command_executor.h" | 9 #include "chrome/browser/ui/browser_commands.h" |
| 10 #include "chrome/browser/ui/browser_finder.h" |
10 #import "chrome/browser/ui/cocoa/browser_window_controller_private.h" | 11 #import "chrome/browser/ui/cocoa/browser_window_controller_private.h" |
11 #import "chrome/browser/ui/cocoa/tabs/tab_strip_controller.h" | 12 #import "chrome/browser/ui/cocoa/tabs/tab_strip_controller.h" |
12 #import "content/public/browser/render_widget_host_view_mac_base.h" | 13 #import "content/public/browser/render_widget_host_view_mac_base.h" |
13 | 14 |
| 15 namespace { |
| 16 |
| 17 // Type of functions listed in global_keyboard_shortcuts_mac.h. |
14 typedef int (*KeyToCommandMapper)(bool, bool, bool, bool, int, unichar); | 18 typedef int (*KeyToCommandMapper)(bool, bool, bool, bool, int, unichar); |
15 | 19 |
16 @interface ChromeEventProcessingWindow () | 20 // If the event is for a Browser window, and the key combination has an |
| 21 // associated command, execute the command. |
| 22 bool HandleExtraKeyboardShortcut( |
| 23 NSEvent* event, |
| 24 NSWindow* window, |
| 25 KeyToCommandMapper command_for_keyboard_shortcut) { |
| 26 // Extract info from |event|. |
| 27 NSUInteger modifers = [event modifierFlags]; |
| 28 const bool command = modifers & NSCommandKeyMask; |
| 29 const bool shift = modifers & NSShiftKeyMask; |
| 30 const bool control = modifers & NSControlKeyMask; |
| 31 const bool option = modifers & NSAlternateKeyMask; |
| 32 const int key_code = [event keyCode]; |
| 33 const unichar key_char = KeyCharacterForEvent(event); |
| 34 |
| 35 int cmd = command_for_keyboard_shortcut(command, shift, control, option, |
| 36 key_code, key_char); |
| 37 |
| 38 if (cmd == -1) |
| 39 return false; |
| 40 |
| 41 // Only handle event if this is a browser window. |
| 42 Browser* browser = chrome::FindBrowserWithWindow(window); |
| 43 if (!browser) |
| 44 return false; |
| 45 |
| 46 chrome::ExecuteCommand(browser, cmd); |
| 47 return true; |
| 48 } |
| 49 |
| 50 bool HandleExtraWindowKeyboardShortcut(NSEvent* event, NSWindow* window) { |
| 51 return HandleExtraKeyboardShortcut(event, window, |
| 52 CommandForWindowKeyboardShortcut); |
| 53 } |
| 54 |
| 55 bool HandleDelayedWindowKeyboardShortcut(NSEvent* event, NSWindow* window) { |
| 56 return HandleExtraKeyboardShortcut(event, window, |
| 57 CommandForDelayedWindowKeyboardShortcut); |
| 58 } |
| 59 |
| 60 bool HandleExtraBrowserKeyboardShortcut(NSEvent* event, NSWindow* window) { |
| 61 return HandleExtraKeyboardShortcut(event, window, |
| 62 CommandForBrowserKeyboardShortcut); |
| 63 } |
| 64 |
17 // Duplicate the given key event, but changing the associated window. | 65 // Duplicate the given key event, but changing the associated window. |
18 - (NSEvent*)keyEventForWindow:(NSWindow*)window fromKeyEvent:(NSEvent*)event; | 66 NSEvent* KeyEventForWindow(NSWindow* window, NSEvent* event) { |
19 @end | 67 NSEventType event_type = [event type]; |
| 68 |
| 69 // Convert the event's location from the original window's coordinates into |
| 70 // our own. |
| 71 NSPoint location = [event locationInWindow]; |
| 72 location = [[event window] convertBaseToScreen:location]; |
| 73 location = [window convertScreenToBase:location]; |
| 74 |
| 75 // Various things *only* apply to key down/up. |
| 76 bool is_a_repeat = false; |
| 77 NSString* characters = nil; |
| 78 NSString* charactors_ignoring_modifiers = nil; |
| 79 if (event_type == NSKeyDown || event_type == NSKeyUp) { |
| 80 is_a_repeat = [event isARepeat]; |
| 81 characters = [event characters]; |
| 82 charactors_ignoring_modifiers = [event charactersIgnoringModifiers]; |
| 83 } |
| 84 |
| 85 // This synthesis may be slightly imperfect: we provide nil for the context, |
| 86 // since I (viettrungluu) am sceptical that putting in the original context |
| 87 // (if one is given) is valid. |
| 88 return [NSEvent keyEventWithType:event_type |
| 89 location:location |
| 90 modifierFlags:[event modifierFlags] |
| 91 timestamp:[event timestamp] |
| 92 windowNumber:[window windowNumber] |
| 93 context:nil |
| 94 characters:characters |
| 95 charactersIgnoringModifiers:charactors_ignoring_modifiers |
| 96 isARepeat:is_a_repeat |
| 97 keyCode:[event keyCode]]; |
| 98 } |
| 99 |
| 100 } // namespace |
20 | 101 |
21 @implementation ChromeEventProcessingWindow | 102 @implementation ChromeEventProcessingWindow |
22 | 103 |
23 - (BOOL)handleExtraKeyboardShortcut:(NSEvent*)event fromTable: | 104 - (BOOL)handleExtraKeyboardShortcut:(NSEvent*)event { |
24 (KeyToCommandMapper)commandForKeyboardShortcut { | 105 return HandleExtraBrowserKeyboardShortcut(event, self) || |
25 // Extract info from |event|. | 106 HandleExtraWindowKeyboardShortcut(event, self) || |
26 NSUInteger modifers = [event modifierFlags]; | 107 HandleDelayedWindowKeyboardShortcut(event, self); |
27 const bool cmdKey = modifers & NSCommandKeyMask; | |
28 const bool shiftKey = modifers & NSShiftKeyMask; | |
29 const bool cntrlKey = modifers & NSControlKeyMask; | |
30 const bool optKey = modifers & NSAlternateKeyMask; | |
31 const unichar keyCode = [event keyCode]; | |
32 const unichar keyChar = KeyCharacterForEvent(event); | |
33 | |
34 int cmdNum = commandForKeyboardShortcut(cmdKey, shiftKey, cntrlKey, optKey, | |
35 keyCode, keyChar); | |
36 | |
37 if (cmdNum != -1) { | |
38 id executor = [self delegate]; | |
39 // A bit of sanity. | |
40 DCHECK([executor conformsToProtocol:@protocol(BrowserCommandExecutor)]); | |
41 DCHECK([executor respondsToSelector:@selector(executeCommand:)]); | |
42 [executor executeCommand:cmdNum]; | |
43 return YES; | |
44 } | |
45 return NO; | |
46 } | |
47 | |
48 - (BOOL)handleExtraWindowKeyboardShortcut:(NSEvent*)event { | |
49 return [self handleExtraKeyboardShortcut:event | |
50 fromTable:CommandForWindowKeyboardShortcut]; | |
51 } | |
52 | |
53 - (BOOL)handleDelayedWindowKeyboardShortcut:(NSEvent*)event { | |
54 return [self handleExtraKeyboardShortcut:event | |
55 fromTable:CommandForDelayedWindowKeyboardShortcut]; | |
56 } | |
57 | |
58 - (BOOL)handleExtraBrowserKeyboardShortcut:(NSEvent*)event { | |
59 return [self handleExtraKeyboardShortcut:event | |
60 fromTable:CommandForBrowserKeyboardShortcut]; | |
61 } | 108 } |
62 | 109 |
63 - (BOOL)performKeyEquivalent:(NSEvent*)event { | 110 - (BOOL)performKeyEquivalent:(NSEvent*)event { |
64 // Some extension commands have higher priority than web content, and some | 111 // Some extension commands have higher priority than web content, and some |
65 // have lower priority. Regardless of whether the event is being | 112 // have lower priority. Regardless of whether the event is being |
66 // redispatched, let the extension system try to handle the event. | 113 // redispatched, let the extension system try to handle the event. |
67 NSWindow* window = event.window; | 114 NSWindow* window = event.window; |
68 if (window) { | 115 if (window) { |
69 BrowserWindowController* controller = [window windowController]; | 116 BrowserWindowController* controller = [window windowController]; |
70 if ([controller respondsToSelector:@selector(handledByExtensionCommand: | 117 if ([controller respondsToSelector:@selector(handledByExtensionCommand: |
71 priority:)]) { | 118 priority:)]) { |
72 ui::AcceleratorManager::HandlerPriority priority = | 119 ui::AcceleratorManager::HandlerPriority priority = |
73 redispatchingEvent_ ? ui::AcceleratorManager::kNormalPriority | 120 redispatchingEvent_ ? ui::AcceleratorManager::kNormalPriority |
74 : ui::AcceleratorManager::kHighPriority; | 121 : ui::AcceleratorManager::kHighPriority; |
75 if ([controller handledByExtensionCommand:event priority:priority]) | 122 if ([controller handledByExtensionCommand:event priority:priority]) |
76 return YES; | 123 return YES; |
77 } | 124 } |
78 } | 125 } |
79 | 126 |
80 if (redispatchingEvent_) | 127 if (redispatchingEvent_) |
81 return NO; | 128 return NO; |
82 | 129 |
83 // Give the web site a chance to handle the event. If it doesn't want to | 130 // Give the web site a chance to handle the event. If it doesn't want to |
84 // handle it, it will call us back with one of the |handle*| methods above. | 131 // handle it, it will call us back with one of the |handle*| methods above. |
85 NSResponder* r = [self firstResponder]; | 132 NSResponder* r = [self firstResponder]; |
86 if ([r conformsToProtocol:@protocol(RenderWidgetHostViewMacBase)]) | 133 if ([r conformsToProtocol:@protocol(RenderWidgetHostViewMacBase)]) |
87 return [r performKeyEquivalent:event]; | 134 return [r performKeyEquivalent:event]; |
88 | 135 |
89 // If the delegate does not implement the BrowserCommandExecutor protocol, | |
90 // then we don't need to handle browser specific shortcut keys. | |
91 if (![[self delegate] conformsToProtocol:@protocol(BrowserCommandExecutor)]) | |
92 return [super performKeyEquivalent:event]; | |
93 | |
94 // Handle per-window shortcuts like cmd-1, but do not handle browser-level | 136 // Handle per-window shortcuts like cmd-1, but do not handle browser-level |
95 // shortcuts like cmd-left (else, cmd-left would do history navigation even | 137 // shortcuts like cmd-left (else, cmd-left would do history navigation even |
96 // if e.g. the Omnibox has focus). | 138 // if e.g. the Omnibox has focus). |
97 if ([self handleExtraWindowKeyboardShortcut:event]) | 139 if (HandleExtraWindowKeyboardShortcut(event, self)) |
98 return YES; | 140 return YES; |
99 | 141 |
100 if ([super performKeyEquivalent:event]) | 142 if ([super performKeyEquivalent:event]) |
101 return YES; | 143 return YES; |
102 | 144 |
103 // Handle per-window shortcuts like Esc after giving everybody else a chance | 145 // Handle per-window shortcuts like Esc after giving everybody else a chance |
104 // to handle them | 146 // to handle them |
105 return [self handleDelayedWindowKeyboardShortcut:event]; | 147 return HandleDelayedWindowKeyboardShortcut(event, self); |
106 } | 148 } |
107 | 149 |
108 - (BOOL)redispatchKeyEvent:(NSEvent*)event { | 150 - (BOOL)redispatchKeyEvent:(NSEvent*)event { |
109 DCHECK(event); | 151 DCHECK(event); |
110 NSEventType eventType = [event type]; | 152 NSEventType eventType = [event type]; |
111 if (eventType != NSKeyDown && | 153 if (eventType != NSKeyDown && |
112 eventType != NSKeyUp && | 154 eventType != NSKeyUp && |
113 eventType != NSFlagsChanged) { | 155 eventType != NSFlagsChanged) { |
114 NOTREACHED(); | 156 NOTREACHED(); |
115 return YES; // Pretend it's been handled in an effort to limit damage. | 157 return YES; // Pretend it's been handled in an effort to limit damage. |
116 } | 158 } |
117 | 159 |
118 // Ordinarily, the event's window should be this window. However, when | 160 // Ordinarily, the event's window should be this window. However, when |
119 // switching between normal and fullscreen mode, we switch out the window, and | 161 // switching between normal and fullscreen mode, we switch out the window, and |
120 // the event's window might be the previous window (or even an earlier one if | 162 // the event's window might be the previous window (or even an earlier one if |
121 // the renderer is running slowly and several mode switches occur). In this | 163 // the renderer is running slowly and several mode switches occur). In this |
122 // rare case, we synthesize a new key event so that its associate window | 164 // rare case, we synthesize a new key event so that its associate window |
123 // (number) is our own. | 165 // (number) is our own. |
124 if ([event window] != self) | 166 if ([event window] != self) |
125 event = [self keyEventForWindow:self fromKeyEvent:event]; | 167 event = KeyEventForWindow(self, event); |
126 | 168 |
127 // Redispatch the event. | 169 // Redispatch the event. |
128 eventHandled_ = YES; | 170 eventHandled_ = YES; |
129 redispatchingEvent_ = YES; | 171 redispatchingEvent_ = YES; |
130 [NSApp sendEvent:event]; | 172 [NSApp sendEvent:event]; |
131 redispatchingEvent_ = NO; | 173 redispatchingEvent_ = NO; |
132 | 174 |
133 // If the event was not handled by [NSApp sendEvent:], the sendEvent: | 175 // If the event was not handled by [NSApp sendEvent:], the sendEvent: |
134 // method below will be called, and because |redispatchingEvent_| is YES, | 176 // method below will be called, and because |redispatchingEvent_| is YES, |
135 // |eventHandled_| will be set to NO. | 177 // |eventHandled_| will be set to NO. |
136 return eventHandled_; | 178 return eventHandled_; |
137 } | 179 } |
138 | 180 |
139 - (void)sendEvent:(NSEvent*)event { | 181 - (void)sendEvent:(NSEvent*)event { |
140 if (!redispatchingEvent_) | 182 if (!redispatchingEvent_) |
141 [super sendEvent:event]; | 183 [super sendEvent:event]; |
142 else | 184 else |
143 eventHandled_ = NO; | 185 eventHandled_ = NO; |
144 } | 186 } |
145 | 187 |
146 - (NSEvent*)keyEventForWindow:(NSWindow*)window fromKeyEvent:(NSEvent*)event { | |
147 NSEventType eventType = [event type]; | |
148 | |
149 // Convert the event's location from the original window's coordinates into | |
150 // our own. | |
151 NSPoint eventLoc = [event locationInWindow]; | |
152 eventLoc = [[event window] convertBaseToScreen:eventLoc]; | |
153 eventLoc = [self convertScreenToBase:eventLoc]; | |
154 | |
155 // Various things *only* apply to key down/up. | |
156 BOOL eventIsARepeat = NO; | |
157 NSString* eventCharacters = nil; | |
158 NSString* eventUnmodCharacters = nil; | |
159 if (eventType == NSKeyDown || eventType == NSKeyUp) { | |
160 eventIsARepeat = [event isARepeat]; | |
161 eventCharacters = [event characters]; | |
162 eventUnmodCharacters = [event charactersIgnoringModifiers]; | |
163 } | |
164 | |
165 // This synthesis may be slightly imperfect: we provide nil for the context, | |
166 // since I (viettrungluu) am sceptical that putting in the original context | |
167 // (if one is given) is valid. | |
168 return [NSEvent keyEventWithType:eventType | |
169 location:eventLoc | |
170 modifierFlags:[event modifierFlags] | |
171 timestamp:[event timestamp] | |
172 windowNumber:[window windowNumber] | |
173 context:nil | |
174 characters:eventCharacters | |
175 charactersIgnoringModifiers:eventUnmodCharacters | |
176 isARepeat:eventIsARepeat | |
177 keyCode:[event keyCode]]; | |
178 } | |
179 | |
180 @end // ChromeEventProcessingWindow | 188 @end // ChromeEventProcessingWindow |
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