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
3 // found in the LICENSE file.
5 #ifndef MOJO_SERVICES_VIEW_MANAGER_VIEW_MANAGER_SERVICE_IMPL_H_
6 #define MOJO_SERVICES_VIEW_MANAGER_VIEW_MANAGER_SERVICE_IMPL_H_
12 #include "base/basictypes.h"
13 #include "base/compiler_specific.h"
14 #include "base/containers/hash_tables.h"
15 #include "base/memory/scoped_ptr.h"
16 #include "mojo/services/public/interfaces/surfaces/surface_id.mojom.h"
17 #include "mojo/services/public/interfaces/view_manager/view_manager.mojom.h"
18 #include "mojo/services/view_manager/access_policy_delegate.h"
19 #include "mojo/services/view_manager/ids.h"
20 #include "mojo/services/view_manager/view_manager_export.h"
30 class ConnectionManager;
34 // Equivalent of NON_EXPORTED_BASE which does not work with the template snafu
37 #pragma warning(disable : 4275)
40 // Manages a connection from the client.
41 class MOJO_VIEW_MANAGER_EXPORT ViewManagerServiceImpl
42 : public InterfaceImpl<ViewManagerService>,
43 public AccessPolicyDelegate {
45 ViewManagerServiceImpl(ConnectionManager* connection_manager,
46 ConnectionSpecificId creator_id,
47 const std::string& creator_url,
48 const std::string& url,
49 const ViewId& root_id,
50 InterfaceRequest<ServiceProvider> service_provider);
51 virtual ~ViewManagerServiceImpl();
53 // Used to mark this connection as originating from a call to
54 // ViewManagerService::Connect(). When set OnConnectionError() deletes |this|.
55 void set_delete_on_connection_error() { delete_on_connection_error_ = true; }
57 ConnectionSpecificId id() const { return id_; }
58 ConnectionSpecificId creator_id() const { return creator_id_; }
59 const std::string& url() const { return url_; }
61 // Returns the View with the specified id.
62 ServerView* GetView(const ViewId& id) {
63 return const_cast<ServerView*>(
64 const_cast<const ViewManagerServiceImpl*>(this)->GetView(id));
66 const ServerView* GetView(const ViewId& id) const;
68 // Returns true if this has |id| as a root.
69 bool HasRoot(const ViewId& id) const;
71 // Invoked when a connection is destroyed.
72 void OnViewManagerServiceImplDestroyed(ConnectionSpecificId id);
74 // The following methods are invoked after the corresponding change has been
75 // processed. They do the appropriate bookkeeping and update the client as
77 void ProcessViewBoundsChanged(const ServerView* view,
78 const gfx::Rect& old_bounds,
79 const gfx::Rect& new_bounds,
80 bool originated_change);
81 void ProcessWillChangeViewHierarchy(const ServerView* view,
82 const ServerView* new_parent,
83 const ServerView* old_parent,
84 bool originated_change);
85 void ProcessViewHierarchyChanged(const ServerView* view,
86 const ServerView* new_parent,
87 const ServerView* old_parent,
88 bool originated_change);
89 void ProcessViewReorder(const ServerView* view,
90 const ServerView* relative_view,
91 OrderDirection direction,
92 bool originated_change);
93 void ProcessViewDeleted(const ViewId& view, bool originated_change);
94 void ProcessWillChangeViewVisibility(const ServerView* view,
95 bool originated_change);
97 // TODO(sky): move this to private section (currently can't because of
99 // InterfaceImp overrides:
100 virtual void OnConnectionError() MOJO_OVERRIDE;
103 typedef std::map<ConnectionSpecificId, ServerView*> ViewMap;
104 typedef base::hash_set<Id> ViewIdSet;
106 bool IsViewKnown(const ServerView* view) const;
108 // These functions return true if the corresponding mojom function is allowed
109 // for this connection.
110 bool CanReorderView(const ServerView* view,
111 const ServerView* relative_view,
112 OrderDirection direction) const;
114 // Deletes a view owned by this connection. Returns true on success. |source|
115 // is the connection that originated the change.
116 bool DeleteViewImpl(ViewManagerServiceImpl* source, ServerView* view);
118 // If |view| is known (in |known_views_|) does nothing. Otherwise adds |view|
119 // to |views|, marks |view| as known and recurses.
120 void GetUnknownViewsFrom(const ServerView* view,
121 std::vector<const ServerView*>* views);
123 // Removes |view| and all its descendants from |known_views_|. This does not
124 // recurse through views that were created by this connection. All views owned
125 // by this connection are added to |local_views|.
126 void RemoveFromKnown(const ServerView* view,
127 std::vector<ServerView*>* local_views);
129 // Removes |view_id| from the set of roots this connection knows about.
130 void RemoveRoot(const ViewId& view_id);
132 void RemoveChildrenAsPartOfEmbed(const ViewId& view_id);
134 // Converts View(s) to ViewData(s) for transport. This assumes all the views
135 // are valid for the client. The parent of views the client is not allowed to
136 // see are set to NULL (in the returned ViewData(s)).
137 Array<ViewDataPtr> ViewsToViewDatas(
138 const std::vector<const ServerView*>& views);
139 ViewDataPtr ViewToViewData(const ServerView* view);
141 // Implementation of GetViewTree(). Adds |view| to |views| and recurses if
142 // CanDescendIntoViewForViewTree() returns true.
143 void GetViewTreeImpl(const ServerView* view,
144 std::vector<const ServerView*>* views) const;
146 // Notify the client if the drawn state of any of the roots changes.
147 // |view| is the view that is changing to the drawn state |new_drawn_value|.
148 void NotifyDrawnStateChanged(const ServerView* view, bool new_drawn_value);
150 // ViewManagerService:
151 virtual void CreateView(Id transport_view_id,
152 const Callback<void(ErrorCode)>& callback) OVERRIDE;
153 virtual void DeleteView(Id transport_view_id,
154 const Callback<void(bool)>& callback) OVERRIDE;
155 virtual void AddView(Id parent_id,
157 const Callback<void(bool)>& callback) OVERRIDE;
158 virtual void RemoveViewFromParent(
160 const Callback<void(bool)>& callback) OVERRIDE;
161 virtual void ReorderView(Id view_id,
163 OrderDirection direction,
164 const Callback<void(bool)>& callback) OVERRIDE;
165 virtual void GetViewTree(
167 const Callback<void(Array<ViewDataPtr>)>& callback) OVERRIDE;
168 virtual void SetViewSurfaceId(Id view_id,
169 SurfaceIdPtr surface_id,
170 const Callback<void(bool)>& callback) OVERRIDE;
171 virtual void SetViewBounds(Id view_id,
173 const Callback<void(bool)>& callback) OVERRIDE;
174 virtual void SetViewVisibility(Id view_id,
176 const Callback<void(bool)>& callback) OVERRIDE;
177 virtual void Embed(const String& url,
179 ServiceProviderPtr service_provider,
180 const Callback<void(bool)>& callback) OVERRIDE;
181 virtual void DispatchOnViewInputEvent(Id view_id, EventPtr event) OVERRIDE;
184 virtual void OnConnectionEstablished() MOJO_OVERRIDE;
186 // AccessPolicyDelegate:
187 virtual const base::hash_set<Id>& GetRootsForAccessPolicy() const OVERRIDE;
188 virtual bool IsViewKnownForAccessPolicy(
189 const ServerView* view) const OVERRIDE;
190 virtual bool IsViewRootOfAnotherConnectionForAccessPolicy(
191 const ServerView* view) const OVERRIDE;
193 ConnectionManager* connection_manager_;
195 // Id of this connection as assigned by ConnectionManager.
196 const ConnectionSpecificId id_;
198 // URL this connection was created for.
199 const std::string url_;
201 // ID of the connection that created us. If 0 it indicates either we were
202 // created by the root, or the connection that created us has been destroyed.
203 ConnectionSpecificId creator_id_;
205 // The URL of the app that embedded the app this connection was created for.
206 const std::string creator_url_;
208 scoped_ptr<AccessPolicy> access_policy_;
210 // The views and views created by this connection. This connection owns these
214 // The set of views that has been communicated to the client.
215 ViewIdSet known_views_;
217 // Set of root views from other connections. More specifically any time
218 // Embed() is invoked the id of the view is added to this set for the child
219 // connection. The connection Embed() was invoked on (the parent) doesn't
220 // directly track which connections are attached to which of its views. That
221 // information can be found by looking through the |roots_| of all
225 // See description above setter.
226 bool delete_on_connection_error_;
228 InterfaceRequest<ServiceProvider> service_provider_;
230 DISALLOW_COPY_AND_ASSIGN(ViewManagerServiceImpl);
237 } // namespace service
240 #endif // MOJO_SERVICES_VIEW_MANAGER_VIEW_MANAGER_SERVICE_IMPL_H_