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1 // Copyright 2016 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 BLIMP_CLIENT_CORE_CONTENTS_BLIMP_CONTENTS_MANAGER_H_ | |
6 #define BLIMP_CLIENT_CORE_CONTENTS_BLIMP_CONTENTS_MANAGER_H_ | |
7 | |
8 #include <map> | |
9 #include <vector> | |
10 | |
11 #include "base/memory/weak_ptr.h" | |
12 #include "blimp/client/core/contents/blimp_contents_impl.h" | |
13 #include "ui/gfx/native_widget_types.h" | |
14 | |
15 namespace blimp { | |
16 namespace client { | |
17 | |
18 class BlimpCompositorDependencies; | |
19 class BlimpContents; | |
20 class BlimpContentsImpl; | |
21 class ImeFeature; | |
22 class NavigationFeature; | |
23 class RenderWidgetFeature; | |
24 class TabControlFeature; | |
25 | |
26 // BlimpContentsManager does the real work of creating BlimpContentsImpl, and | |
27 // then passes the ownership to the caller. It also owns the observers to | |
28 // monitor the life time of the contents it creates. | |
29 class BlimpContentsManager { | |
30 public: | |
31 explicit BlimpContentsManager( | |
32 BlimpCompositorDependencies* blimp_compositor_dependencies, | |
33 ImeFeature* ime_feature, | |
34 NavigationFeature* nav_feature, | |
35 RenderWidgetFeature* render_widget_feature, | |
36 TabControlFeature* tab_control_feature); | |
37 ~BlimpContentsManager(); | |
38 | |
39 // Builds a BlimpContentsImpl and notifies the engine. | |
40 // TODO(mlliu): Currently we want to have a single BlimpContents. If there is | |
41 // an existing contents, return nullptr (http://crbug.com/642558). | |
42 std::unique_ptr<BlimpContentsImpl> CreateBlimpContents( | |
43 gfx::NativeWindow window); | |
44 | |
45 // The caller can query the contents through its id. | |
46 BlimpContentsImpl* GetBlimpContents(int id); | |
47 | |
48 // Returns a vector of the currently active BlimpContentsImpls. There is no | |
49 // guarantee for the lifetime of these pointers after this stack frame. | |
50 std::vector<BlimpContentsImpl*> GetAllActiveBlimpContents(); | |
51 | |
52 private: | |
53 class BlimpContentsDeletionObserver; | |
54 friend class BlimpContentsDeletionObserver; | |
55 | |
56 // When creating the BlimpContentsImpl, an id is created for the content. | |
57 int CreateBlimpContentsId(); | |
58 | |
59 // When a BlimpContentsImpl is destroyed, its observer will pass the contents | |
60 // pointer to the manager. The contents pointer is used to retrieve its id, | |
61 // which in turn is used to destroy the observer entry from the observer_map_ | |
62 // and close the tab. | |
63 void OnContentsDestroyed(BlimpContents* contents); | |
64 | |
65 // Destroy the observer entry from the observer_map_ when a BlimpContentsImpl | |
66 // is destroyed. | |
67 void EraseObserverFromMap(int id); | |
68 base::WeakPtr<BlimpContentsManager> GetWeakPtr(); | |
69 | |
70 // The ID to use whenever a new BlimpContentsImpl is created. Incremented | |
71 // after each use. | |
72 int next_blimp_contents_id_ = 0; | |
73 | |
74 // BlimpContentsManager owns the BlimpContentsDeletionObserver for the | |
75 // contents it creates, with the content id being the key to help manage the | |
76 // lifetime of the observers. | |
77 std::map<int, std::unique_ptr<BlimpContentsDeletionObserver>> observer_map_; | |
78 | |
79 BlimpCompositorDependencies* blimp_compositor_dependencies_; | |
80 ImeFeature* ime_feature_; | |
81 NavigationFeature* navigation_feature_; | |
82 RenderWidgetFeature* render_widget_feature_; | |
83 TabControlFeature* tab_control_feature_; | |
84 | |
85 // TODO(mlliu): Currently we want to have a single BlimpContents. Remove this | |
86 // when it supports multiple tabs (http://crbug.com/642558). | |
87 bool tab_exists_ = false; | |
88 | |
89 base::WeakPtrFactory<BlimpContentsManager> weak_ptr_factory_; | |
90 | |
91 DISALLOW_COPY_AND_ASSIGN(BlimpContentsManager); | |
92 }; | |
93 | |
94 } // namespace client | |
95 } // namespace blimp | |
96 | |
97 #endif // BLIMP_CLIENT_CORE_CONTENTS_BLIMP_CONTENTS_MANAGER_H_ | |
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