Complete live region support in ChromeVox Next.

chrome/renderer/extensions/automation_internal_custom_bindings.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_RENDERER_EXTENSIONS_AUTOMATION_INTERNAL_CUSTOM_BINDINGS_H_
 #define CHROME_RENDERER_EXTENSIONS_AUTOMATION_INTERNAL_CUSTOM_BINDINGS_H_
 
 #include "base/compiler_specific.h"
 #include "chrome/common/extensions/api/automation.h"
 #include "extensions/renderer/object_backed_native_handler.h"
@@ skipping 11 matching lines @@
   TreeCache();
   ~TreeCache();
 
   int tab_id;
   int tree_id;
 
   gfx::Vector2d location_offset;
   ui::AXTree tree;
 };
 
+struct TreeChangeObserver {
+  int id;
+  api::automation::TreeChangeObserverFilter filter;
+};
+
 // The native component of custom bindings for the chrome.automationInternal
 // API.
 class AutomationInternalCustomBindings : public ObjectBackedNativeHandler,
                                          public ui::AXTreeDelegate {
  public:
   explicit AutomationInternalCustomBindings(ScriptContext* context);
 
   ~AutomationInternalCustomBindings() override;
 
   void OnMessageReceived(const IPC::Message& message);
@@ skipping 25 matching lines @@
   // events forwarded to this process.
   void StartCachingAccessibilityTrees(
       const v8::FunctionCallbackInfo<v8::Value>& args);
 
   // Called when an accessibility tree is destroyed and needs to be
   // removed from our cache.
   // Args: int ax_tree_id
   void DestroyAccessibilityTree(
       const v8::FunctionCallbackInfo<v8::Value>& args);
 
+  void AddTreeChangeObserver(const v8::FunctionCallbackInfo<v8::Value>& args);
+
+  void RemoveTreeChangeObserver(
+      const v8::FunctionCallbackInfo<v8::Value>& args);
+
   void RouteTreeIDFunction(const std::string& name,
                            void (*callback)(v8::Isolate* isolate,
                                             v8::ReturnValue<v8::Value> result,
                                             TreeCache* cache));
 
   void RouteNodeIDFunction(const std::string& name,
                            void (*callback)(v8::Isolate* isolate,
                                             v8::ReturnValue<v8::Value> result,
                                             TreeCache* cache,
                                             ui::AXNode* node));
@@ skipping 65 matching lines @@
   void GetHtmlAttribute(const v8::FunctionCallbackInfo<v8::Value>& args);
 
   //
   // Helper functions.
   //
 
   // Handle accessibility events from the browser process.
   void OnAccessibilityEvent(const ExtensionMsg_AccessibilityEventParams& params,
                             bool is_active_profile);
 
+  void UpdateOverallTreeChangeObserverFilter();
+
   // AXTreeDelegate implementation.
   void OnTreeDataChanged(ui::AXTree* tree) override;
   void OnNodeWillBeDeleted(ui::AXTree* tree, ui::AXNode* node) override;
   void OnSubtreeWillBeDeleted(ui::AXTree* tree, ui::AXNode* node) override;
   void OnNodeCreated(ui::AXTree* tree, ui::AXNode* node) override;
   void OnNodeChanged(ui::AXTree* tree, ui::AXNode* node) override;
   void OnAtomicUpdateFinished(ui::AXTree* tree,
                               bool root_changed,
                               const std::vector<Change>& changes) override;
-
   void SendTreeChangeEvent(api::automation::TreeChangeType change_type,
                            ui::AXTree* tree,
                            ui::AXNode* node);
+  void SendChildTreeIDEvent(ui::AXTree* tree, ui::AXNode* node);
+  void SendNodesRemovedEvent(ui::AXTree* tree, const std::vector<int>& ids);
 
   base::hash_map<int, TreeCache*> tree_id_to_tree_cache_map_;
   base::hash_map<ui::AXTree*, TreeCache*> axtree_to_tree_cache_map_;
   scoped_refptr<AutomationMessageFilter> message_filter_;
   bool is_active_profile_;
+  std::vector<TreeChangeObserver> tree_change_observers_;
+  api::automation::TreeChangeObserverFilter
+      tree_change_observer_overall_filter_;
+  std::vector<int> deleted_node_ids_;
 
   DISALLOW_COPY_AND_ASSIGN(AutomationInternalCustomBindings);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_AUTOMATION_INTERNAL_CUSTOM_BINDINGS_H_