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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 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 COMPONENTS_MUS_VIEW_TREE_IMPL_H_ | 5 #ifndef COMPONENTS_MUS_VIEW_TREE_IMPL_H_ |
6 #define COMPONENTS_MUS_VIEW_TREE_IMPL_H_ | 6 #define COMPONENTS_MUS_VIEW_TREE_IMPL_H_ |
7 | 7 |
8 #include <set> | 8 #include <set> |
9 #include <string> | 9 #include <string> |
10 #include <vector> | 10 #include <vector> |
11 | 11 |
12 #include "base/basictypes.h" | 12 #include "base/basictypes.h" |
13 #include "base/containers/hash_tables.h" | 13 #include "base/containers/hash_tables.h" |
14 #include "base/memory/ref_counted.h" | 14 #include "base/memory/ref_counted.h" |
15 #include "base/memory/scoped_ptr.h" | 15 #include "base/memory/scoped_ptr.h" |
16 #include "components/mus/access_policy_delegate.h" | 16 #include "components/mus/access_policy_delegate.h" |
17 #include "components/mus/ids.h" | 17 #include "components/mus/ids.h" |
18 #include "components/mus/public/interfaces/surface_id.mojom.h" | 18 #include "components/mus/public/interfaces/surface_id.mojom.h" |
19 #include "components/mus/public/interfaces/view_tree.mojom.h" | 19 #include "components/mus/public/interfaces/view_tree.mojom.h" |
20 | 20 |
21 namespace gfx { | 21 namespace gfx { |
22 class Rect; | 22 class Rect; |
23 } | 23 } |
24 | 24 |
25 namespace view_manager { | 25 namespace mus { |
26 | 26 |
27 class AccessPolicy; | 27 class AccessPolicy; |
28 class ConnectionManager; | 28 class ConnectionManager; |
29 class ServerView; | 29 class ServerView; |
30 class ViewTreeHostImpl; | 30 class ViewTreeHostImpl; |
31 | 31 |
32 // An instance of ViewTreeImpl is created for every ViewTree request. | 32 // An instance of ViewTreeImpl is created for every ViewTree request. |
33 // ViewTreeImpl tracks all the state and views created by a client. ViewTreeImpl | 33 // ViewTreeImpl tracks all the state and views created by a client. ViewTreeImpl |
34 // coordinates with ConnectionManager to update the client (and internal state) | 34 // coordinates with ConnectionManager to update the client (and internal state) |
35 // as necessary. | 35 // as necessary. |
36 class ViewTreeImpl : public mojo::ViewTree, public AccessPolicyDelegate { | 36 class ViewTreeImpl : public mojo::ViewTree, public AccessPolicyDelegate { |
37 public: | 37 public: |
38 ViewTreeImpl(ConnectionManager* connection_manager, | 38 ViewTreeImpl(ConnectionManager* connection_manager, |
39 mojo::ConnectionSpecificId creator_id, | 39 ConnectionSpecificId creator_id, |
40 const ViewId& root_id, | 40 const ViewId& root_id, |
41 uint32_t policy_bitmask); | 41 uint32_t policy_bitmask); |
42 ~ViewTreeImpl() override; | 42 ~ViewTreeImpl() override; |
43 | 43 |
44 // |services| and |exposed_services| are the ServiceProviders to pass to the | 44 // |services| and |exposed_services| are the ServiceProviders to pass to the |
45 // client via OnEmbed(). | 45 // client via OnEmbed(). |
46 void Init(mojo::ViewTreeClient* client, mojo::ViewTreePtr tree); | 46 void Init(mojo::ViewTreeClient* client, mojo::ViewTreePtr tree); |
47 | 47 |
48 mojo::ConnectionSpecificId id() const { return id_; } | 48 ConnectionSpecificId id() const { return id_; } |
49 mojo::ConnectionSpecificId creator_id() const { return creator_id_; } | 49 ConnectionSpecificId creator_id() const { return creator_id_; } |
50 | 50 |
51 mojo::ViewTreeClient* client() { return client_; } | 51 mojo::ViewTreeClient* client() { return client_; } |
52 | 52 |
53 // Returns the View with the specified id. | 53 // Returns the View with the specified id. |
54 ServerView* GetView(const ViewId& id) { | 54 ServerView* GetView(const ViewId& id) { |
55 return const_cast<ServerView*>( | 55 return const_cast<ServerView*>( |
56 const_cast<const ViewTreeImpl*>(this)->GetView(id)); | 56 const_cast<const ViewTreeImpl*>(this)->GetView(id)); |
57 } | 57 } |
58 const ServerView* GetView(const ViewId& id) const; | 58 const ServerView* GetView(const ViewId& id) const; |
59 | 59 |
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73 | 73 |
74 // These functions are synchronous variants of those defined in the mojom. The | 74 // These functions are synchronous variants of those defined in the mojom. The |
75 // ViewTree implementations all call into these. See the mojom for details. | 75 // ViewTree implementations all call into these. See the mojom for details. |
76 mojo::ErrorCode CreateView(const ViewId& view_id); | 76 mojo::ErrorCode CreateView(const ViewId& view_id); |
77 bool AddView(const ViewId& parent_id, const ViewId& child_id); | 77 bool AddView(const ViewId& parent_id, const ViewId& child_id); |
78 std::vector<const ServerView*> GetViewTree(const ViewId& view_id) const; | 78 std::vector<const ServerView*> GetViewTree(const ViewId& view_id) const; |
79 bool SetViewVisibility(const ViewId& view_id, bool visible); | 79 bool SetViewVisibility(const ViewId& view_id, bool visible); |
80 bool Embed(const ViewId& view_id, | 80 bool Embed(const ViewId& view_id, |
81 mojo::ViewTreeClientPtr client, | 81 mojo::ViewTreeClientPtr client, |
82 uint32_t policy_bitmask, | 82 uint32_t policy_bitmask, |
83 mojo::ConnectionSpecificId* connection_id); | 83 ConnectionSpecificId* connection_id); |
84 void Embed(const ViewId& view_id, mojo::URLRequestPtr request); | 84 void Embed(const ViewId& view_id, mojo::URLRequestPtr request); |
85 | 85 |
86 // The following methods are invoked after the corresponding change has been | 86 // The following methods are invoked after the corresponding change has been |
87 // processed. They do the appropriate bookkeeping and update the client as | 87 // processed. They do the appropriate bookkeeping and update the client as |
88 // necessary. | 88 // necessary. |
89 void ProcessViewBoundsChanged(const ServerView* view, | 89 void ProcessViewBoundsChanged(const ServerView* view, |
90 const gfx::Rect& old_bounds, | 90 const gfx::Rect& old_bounds, |
91 const gfx::Rect& new_bounds, | 91 const gfx::Rect& new_bounds, |
92 bool originated_change); | 92 bool originated_change); |
93 void ProcessViewportMetricsChanged(const mojo::ViewportMetrics& old_metrics, | 93 void ProcessViewportMetricsChanged(const mojo::ViewportMetrics& old_metrics, |
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109 const ServerView* relative_view, | 109 const ServerView* relative_view, |
110 mojo::OrderDirection direction, | 110 mojo::OrderDirection direction, |
111 bool originated_change); | 111 bool originated_change); |
112 void ProcessViewDeleted(const ViewId& view, bool originated_change); | 112 void ProcessViewDeleted(const ViewId& view, bool originated_change); |
113 void ProcessWillChangeViewVisibility(const ServerView* view, | 113 void ProcessWillChangeViewVisibility(const ServerView* view, |
114 bool originated_change); | 114 bool originated_change); |
115 void ProcessFocusChanged(const ServerView* old_focused_view, | 115 void ProcessFocusChanged(const ServerView* old_focused_view, |
116 const ServerView* new_focused_view); | 116 const ServerView* new_focused_view); |
117 | 117 |
118 private: | 118 private: |
119 using ViewIdSet = base::hash_set<mojo::Id>; | 119 using ViewIdSet = base::hash_set<Id>; |
120 using ViewMap = std::map<mojo::ConnectionSpecificId, ServerView*>; | 120 using ViewMap = std::map<ConnectionSpecificId, ServerView*>; |
121 | 121 |
122 bool IsViewKnown(const ServerView* view) const; | 122 bool IsViewKnown(const ServerView* view) const; |
123 | 123 |
124 // These functions return true if the corresponding mojom function is allowed | 124 // These functions return true if the corresponding mojom function is allowed |
125 // for this connection. | 125 // for this connection. |
126 bool CanReorderView(const ServerView* view, | 126 bool CanReorderView(const ServerView* view, |
127 const ServerView* relative_view, | 127 const ServerView* relative_view, |
128 mojo::OrderDirection direction) const; | 128 mojo::OrderDirection direction) const; |
129 | 129 |
130 // Deletes a view owned by this connection. Returns true on success. |source| | 130 // Deletes a view owned by this connection. Returns true on success. |source| |
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163 | 163 |
164 // Deletes all Views we own. | 164 // Deletes all Views we own. |
165 void DestroyViews(); | 165 void DestroyViews(); |
166 | 166 |
167 bool CanEmbed(const ViewId& view_id, uint32_t policy_bitmask) const; | 167 bool CanEmbed(const ViewId& view_id, uint32_t policy_bitmask) const; |
168 void PrepareForEmbed(const ViewId& view_id); | 168 void PrepareForEmbed(const ViewId& view_id); |
169 void RemoveChildrenAsPartOfEmbed(const ViewId& view_id); | 169 void RemoveChildrenAsPartOfEmbed(const ViewId& view_id); |
170 | 170 |
171 // ViewTree: | 171 // ViewTree: |
172 void CreateView( | 172 void CreateView( |
173 mojo::Id transport_view_id, | 173 Id transport_view_id, |
174 const mojo::Callback<void(mojo::ErrorCode)>& callback) override; | 174 const mojo::Callback<void(mojo::ErrorCode)>& callback) override; |
175 void DeleteView(mojo::Id transport_view_id, | 175 void DeleteView(Id transport_view_id, |
176 const mojo::Callback<void(bool)>& callback) override; | 176 const mojo::Callback<void(bool)>& callback) override; |
177 void AddView(mojo::Id parent_id, | 177 void AddView(Id parent_id, |
178 mojo::Id child_id, | 178 Id child_id, |
179 const mojo::Callback<void(bool)>& callback) override; | 179 const mojo::Callback<void(bool)>& callback) override; |
180 void RemoveViewFromParent( | 180 void RemoveViewFromParent( |
181 mojo::Id view_id, | 181 Id view_id, |
182 const mojo::Callback<void(bool)>& callback) override; | 182 const mojo::Callback<void(bool)>& callback) override; |
183 void ReorderView(mojo::Id view_id, | 183 void ReorderView(Id view_id, |
184 mojo::Id relative_view_id, | 184 Id relative_view_id, |
185 mojo::OrderDirection direction, | 185 mojo::OrderDirection direction, |
186 const mojo::Callback<void(bool)>& callback) override; | 186 const mojo::Callback<void(bool)>& callback) override; |
187 void GetViewTree(mojo::Id view_id, | 187 void GetViewTree(Id view_id, |
188 const mojo::Callback<void(mojo::Array<mojo::ViewDataPtr>)>& | 188 const mojo::Callback<void(mojo::Array<mojo::ViewDataPtr>)>& |
189 callback) override; | 189 callback) override; |
190 void SetViewBounds(mojo::Id view_id, | 190 void SetViewBounds(Id view_id, |
191 mojo::RectPtr bounds, | 191 mojo::RectPtr bounds, |
192 const mojo::Callback<void(bool)>& callback) override; | 192 const mojo::Callback<void(bool)>& callback) override; |
193 void SetViewVisibility(mojo::Id view_id, | 193 void SetViewVisibility(Id view_id, |
194 bool visible, | 194 bool visible, |
195 const mojo::Callback<void(bool)>& callback) override; | 195 const mojo::Callback<void(bool)>& callback) override; |
196 void SetViewProperty(mojo::Id view_id, | 196 void SetViewProperty(Id view_id, |
197 const mojo::String& name, | 197 const mojo::String& name, |
198 mojo::Array<uint8_t> value, | 198 mojo::Array<uint8_t> value, |
199 const mojo::Callback<void(bool)>& callback) override; | 199 const mojo::Callback<void(bool)>& callback) override; |
200 void RequestSurface(mojo::Id view_id, | 200 void RequestSurface(Id view_id, |
201 mojo::InterfaceRequest<mojo::Surface> surface, | 201 mojo::InterfaceRequest<mojo::Surface> surface, |
202 mojo::SurfaceClientPtr client) override; | 202 mojo::SurfaceClientPtr client) override; |
203 void Embed(mojo::Id transport_view_id, | 203 void Embed(Id transport_view_id, |
204 mojo::ViewTreeClientPtr client, | 204 mojo::ViewTreeClientPtr client, |
205 uint32_t policy_bitmask, | 205 uint32_t policy_bitmask, |
206 const EmbedCallback& callback) override; | 206 const EmbedCallback& callback) override; |
207 void SetFocus(uint32_t view_id) override; | 207 void SetFocus(uint32_t view_id) override; |
208 void SetViewTextInputState(uint32_t view_id, | 208 void SetViewTextInputState(uint32_t view_id, |
209 mojo::TextInputStatePtr state) override; | 209 mojo::TextInputStatePtr state) override; |
210 void SetImeVisibility(mojo::Id transport_view_id, | 210 void SetImeVisibility(Id transport_view_id, |
211 bool visible, | 211 bool visible, |
212 mojo::TextInputStatePtr state) override; | 212 mojo::TextInputStatePtr state) override; |
213 | 213 |
214 // AccessPolicyDelegate: | 214 // AccessPolicyDelegate: |
215 bool IsRootForAccessPolicy(const ViewId& id) const override; | 215 bool IsRootForAccessPolicy(const ViewId& id) const override; |
216 bool IsViewKnownForAccessPolicy(const ServerView* view) const override; | 216 bool IsViewKnownForAccessPolicy(const ServerView* view) const override; |
217 bool IsViewRootOfAnotherConnectionForAccessPolicy( | 217 bool IsViewRootOfAnotherConnectionForAccessPolicy( |
218 const ServerView* view) const override; | 218 const ServerView* view) const override; |
219 bool IsDescendantOfEmbedRoot(const ServerView* view) override; | 219 bool IsDescendantOfEmbedRoot(const ServerView* view) override; |
220 | 220 |
221 ConnectionManager* connection_manager_; | 221 ConnectionManager* connection_manager_; |
222 | 222 |
223 // Id of this connection as assigned by ConnectionManager. | 223 // Id of this connection as assigned by ConnectionManager. |
224 const mojo::ConnectionSpecificId id_; | 224 const ConnectionSpecificId id_; |
225 | 225 |
226 // ID of the connection that created us. If 0 it indicates either we were | 226 // ID of the connection that created us. If 0 it indicates either we were |
227 // created by the root, or the connection that created us has been destroyed. | 227 // created by the root, or the connection that created us has been destroyed. |
228 mojo::ConnectionSpecificId creator_id_; | 228 ConnectionSpecificId creator_id_; |
229 | 229 |
230 mojo::ViewTreeClient* client_; | 230 mojo::ViewTreeClient* client_; |
231 | 231 |
232 scoped_ptr<view_manager::AccessPolicy> access_policy_; | 232 scoped_ptr<mus::AccessPolicy> access_policy_; |
233 | 233 |
234 // The views created by this connection. This connection owns these objects. | 234 // The views created by this connection. This connection owns these objects. |
235 ViewMap view_map_; | 235 ViewMap view_map_; |
236 | 236 |
237 // The set of views that has been communicated to the client. | 237 // The set of views that has been communicated to the client. |
238 ViewIdSet known_views_; | 238 ViewIdSet known_views_; |
239 | 239 |
240 // The root of this connection. This is a scoped_ptr to reinforce the | 240 // The root of this connection. This is a scoped_ptr to reinforce the |
241 // connection may have no root. A connection has no root if either the root | 241 // connection may have no root. A connection has no root if either the root |
242 // is destroyed or Embed() is invoked on the root. | 242 // is destroyed or Embed() is invoked on the root. |
243 scoped_ptr<ViewId> root_; | 243 scoped_ptr<ViewId> root_; |
244 | 244 |
245 bool is_embed_root_; | 245 bool is_embed_root_; |
246 | 246 |
247 DISALLOW_COPY_AND_ASSIGN(ViewTreeImpl); | 247 DISALLOW_COPY_AND_ASSIGN(ViewTreeImpl); |
248 }; | 248 }; |
249 | 249 |
250 } // namespace view_manager | 250 } // namespace mus |
251 | 251 |
252 #endif // COMPONENTS_MUS_VIEW_TREE_IMPL_H_ | 252 #endif // COMPONENTS_MUS_VIEW_TREE_IMPL_H_ |
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