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Side by Side Diff: ui/android/view_android.h

Issue 2502763003: Introduce ViewRoot to forward input/view events to native (Closed)
Patch Set: lazy creation Created 4 years ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved. 1 // Copyright 2013 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 UI_ANDROID_VIEW_ANDROID_H_ 5 #ifndef UI_ANDROID_VIEW_ANDROID_H_
6 #define UI_ANDROID_VIEW_ANDROID_H_ 6 #define UI_ANDROID_VIEW_ANDROID_H_
7 7
8 #include <list> 8 #include <list>
9 9
10 #include "base/android/jni_weak_ref.h" 10 #include "base/android/jni_weak_ref.h"
11 #include "base/memory/ref_counted.h" 11 #include "base/memory/ref_counted.h"
12 #include "ui/android/ui_android_export.h" 12 #include "ui/android/ui_android_export.h"
13 #include "ui/gfx/geometry/rect_f.h" 13 #include "ui/gfx/geometry/rect_f.h"
14 14
15 namespace cc { 15 namespace cc {
16 class Layer; 16 class Layer;
17 } 17 }
18 18
19 namespace ui { 19 namespace ui {
20 20
21 class EventHandler;
21 class WindowAndroid; 22 class WindowAndroid;
22 23
23 // A simple container for a UI layer. 24 // A simple container for a UI layer.
24 // At the root of the hierarchy is a WindowAndroid, when attached. 25 // At the root of the hierarchy is a WindowAndroid, when attached.
25 class UI_ANDROID_EXPORT ViewAndroid { 26 class UI_ANDROID_EXPORT ViewAndroid {
26 public: 27 public:
27 // Stores an anchored view to delete itself at the end of its lifetime 28 // Stores an anchored view to delete itself at the end of its lifetime
28 // automatically. This helps manage the lifecyle without the dependency 29 // automatically. This helps manage the lifecyle without the dependency
29 // on |ViewAndroid|. 30 // on |ViewAndroid|.
30 class ScopedAnchorView { 31 class ScopedAnchorView {
(...skipping 16 matching lines...) Expand all
47 private: 48 private:
48 // TODO(jinsukkim): Following weak refs can be cast to strong refs which 49 // TODO(jinsukkim): Following weak refs can be cast to strong refs which
49 // cannot be garbage-collected and leak memory. Rewrite not to use them. 50 // cannot be garbage-collected and leak memory. Rewrite not to use them.
50 // see comments in crrev.com/2103243002. 51 // see comments in crrev.com/2103243002.
51 JavaObjectWeakGlobalRef view_; 52 JavaObjectWeakGlobalRef view_;
52 JavaObjectWeakGlobalRef delegate_; 53 JavaObjectWeakGlobalRef delegate_;
53 54
54 // Default copy/assign disabled by move constructor. 55 // Default copy/assign disabled by move constructor.
55 }; 56 };
56 57
57 // A ViewAndroid may have its own delegate or otherwise will 58 // Client interface used to forward events from Java to native views.
58 // use the next available parent's delegate. 59 // Calls not handled by a client are dispatched to its children along
59 ViewAndroid(const base::android::JavaRef<jobject>& delegate); 60 // the hierarchy of ViewAndroid. Overriden method should return true
61 // to indicate that the event was handled and stop the processing.
62 class ViewClient {
boliu 2016/12/02 23:53:22 put this in a separate file, presumably this will
Jinsuk Kim 2016/12/05 11:07:44 Done.
63 public:
64 bool OnPhysicalBackingSizeChanged(int width, int height) { return false; }
boliu 2016/12/02 23:53:22 virtual? also I think inlining virtual method is n
Jinsuk Kim 2016/12/05 11:07:44 Done.
65 };
60 66
61 ViewAndroid(); 67 ViewAndroid();
62 virtual ~ViewAndroid(); 68 virtual ~ViewAndroid();
63 69
64 // Returns the window at the root of this hierarchy, or |null| 70 // Returns the window at the root of this hierarchy, or |null|
65 // if disconnected. 71 // if disconnected.
66 virtual WindowAndroid* GetWindowAndroid() const; 72 virtual WindowAndroid* GetWindowAndroid() const;
67 73
68 // Used to return and set the layer for this view. May be |null|. 74 // Used to return and set the layer for this view. May be |null|.
69 cc::Layer* GetLayer() const; 75 cc::Layer* GetLayer() const;
70 void SetLayer(scoped_refptr<cc::Layer> layer); 76 void SetLayer(scoped_refptr<cc::Layer> layer);
71 77
72 void SetDelegate(const base::android::JavaRef<jobject>& delegate); 78 void SetDelegate(const base::android::JavaRef<jobject>& delegate);
73 79
80 EventHandler* GetEventHandler();
81
74 // Adds this view as a child of another view. 82 // Adds this view as a child of another view.
75 void AddChild(ViewAndroid* child); 83 void AddChild(ViewAndroid* child);
76 84
77 // Detaches this view from its parent. 85 // Detaches this view from its parent.
78 void RemoveFromParent(); 86 void RemoveFromParent();
79 87
88 void SetViewClient(ViewClient* client) { client_ = client; }
boliu 2016/12/02 23:53:22 can we pass this in on construction?
Jinsuk Kim 2016/12/05 11:07:44 Done.
89
80 bool StartDragAndDrop(const base::android::JavaRef<jstring>& jtext, 90 bool StartDragAndDrop(const base::android::JavaRef<jstring>& jtext,
81 const base::android::JavaRef<jobject>& jimage); 91 const base::android::JavaRef<jobject>& jimage);
82 92
93 gfx::Size GetPhysicalBackingSize();
94
83 ScopedAnchorView AcquireAnchorView(); 95 ScopedAnchorView AcquireAnchorView();
84 void SetAnchorRect(const base::android::JavaRef<jobject>& anchor, 96 void SetAnchorRect(const base::android::JavaRef<jobject>& anchor,
85 const gfx::RectF& bounds); 97 const gfx::RectF& bounds);
86 98
99 // Internal implementation of ViewClient forwarding calls to the interface.
100 bool OnPhysicalBackingSizeChanged(int width, int height);
101
87 protected: 102 protected:
88 ViewAndroid* parent_; 103 ViewAndroid* parent_;
89 104
90 private: 105 private:
91 void RemoveChild(ViewAndroid* child); 106 void RemoveChild(ViewAndroid* child);
92 107
93 // Returns the Java delegate for this view. This is used to delegate work 108 // Returns the Java delegate for this view. This is used to delegate work
94 // up to the embedding view (or the embedder that can deal with the 109 // up to the embedding view (or the embedder that can deal with the
95 // implementation details). 110 // implementation details).
96 const base::android::ScopedJavaLocalRef<jobject> 111 const base::android::ScopedJavaLocalRef<jobject>
97 GetViewAndroidDelegate() const; 112 GetViewAndroidDelegate() const;
98 113
99 std::list<ViewAndroid*> children_; 114 std::list<ViewAndroid*> children_;
100 scoped_refptr<cc::Layer> layer_; 115 scoped_refptr<cc::Layer> layer_;
101 JavaObjectWeakGlobalRef delegate_; 116 JavaObjectWeakGlobalRef delegate_;
117 ViewClient* client_;
118 EventHandler* handler_;
102 119
103 DISALLOW_COPY_AND_ASSIGN(ViewAndroid); 120 DISALLOW_COPY_AND_ASSIGN(ViewAndroid);
104 }; 121 };
105 122
106 } // namespace ui 123 } // namespace ui
107 124
108 #endif // UI_ANDROID_VIEW_ANDROID_H_ 125 #endif // UI_ANDROID_VIEW_ANDROID_H_
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