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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 #include "ui/base/accelerator_manager.h" | |
6 | |
7 #include <algorithm> | |
8 | |
9 #include "base/logging.h" | |
10 | |
11 namespace ui { | |
12 | |
13 AcceleratorManager::AcceleratorManager() { | |
14 } | |
15 | |
16 AcceleratorManager::~AcceleratorManager() { | |
17 } | |
18 | |
19 void AcceleratorManager::Register(const Accelerator& accelerator, | |
20 AcceleratorTarget* target) { | |
21 AcceleratorTargetList& targets = accelerators_[accelerator]; | |
22 DCHECK(std::find(targets.begin(), targets.end(), target) == targets.end()) | |
23 << "Registering the same target multiple times"; | |
24 targets.push_front(target); | |
25 } | |
26 | |
27 void AcceleratorManager::Unregister(const Accelerator& accelerator, | |
28 AcceleratorTarget* target) { | |
29 AcceleratorMap::iterator map_iter = accelerators_.find(accelerator); | |
30 if (map_iter == accelerators_.end()) { | |
31 NOTREACHED() << "Unregistering non-existing accelerator"; | |
32 return; | |
33 } | |
34 | |
35 AcceleratorTargetList* targets = &map_iter->second; | |
36 AcceleratorTargetList::iterator target_iter = | |
37 std::find(targets->begin(), targets->end(), target); | |
38 if (target_iter == targets->end()) { | |
39 NOTREACHED() << "Unregistering accelerator for wrong target"; | |
40 return; | |
41 } | |
42 | |
43 targets->erase(target_iter); | |
44 } | |
45 | |
46 void AcceleratorManager::UnregisterAll(AcceleratorTarget* target) { | |
47 for (AcceleratorMap::iterator map_iter = accelerators_.begin(); | |
48 map_iter != accelerators_.end(); ++map_iter) { | |
49 AcceleratorTargetList* targets = &map_iter->second; | |
50 targets->remove(target); | |
51 } | |
52 } | |
53 | |
54 bool AcceleratorManager::Process(const Accelerator& accelerator) { | |
55 AcceleratorMap::iterator map_iter = accelerators_.find(accelerator); | |
56 if (map_iter != accelerators_.end()) { | |
57 // We have to copy the target list here, because an AcceleratorPressed | |
58 // event handler may modify the list. | |
59 AcceleratorTargetList targets(map_iter->second); | |
60 for (AcceleratorTargetList::iterator iter = targets.begin(); | |
61 iter != targets.end(); ++iter) { | |
62 if ((*iter)->AcceleratorPressed(accelerator)) | |
63 return true; | |
64 } | |
65 } | |
66 return false; | |
67 } | |
68 | |
69 AcceleratorTarget* AcceleratorManager::GetCurrentTarget( | |
70 const Accelerator& accelerator) const { | |
71 AcceleratorMap::const_iterator map_iter = accelerators_.find(accelerator); | |
72 if (map_iter == accelerators_.end() || map_iter->second.empty()) | |
73 return NULL; | |
74 return map_iter->second.front(); | |
75 } | |
76 | |
77 } // namespace ui | |
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