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// 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 CONTENT_RENDERER_JAVA_GIN_JAVA_BRIDGE_DISPATCHER_H_
#define CONTENT_RENDERER_JAVA_GIN_JAVA_BRIDGE_DISPATCHER_H_
#include <map>
#include <set>
#include "base/id_map.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/values.h"
#include "content/common/android/gin_java_bridge_errors.h"
#include "content/public/renderer/render_frame_observer.h"
namespace blink {
class WebFrame;
}
namespace content {
class GinJavaBridgeObject;
// This class handles injecting Java objects into the main frame of a
// RenderView. The 'add' and 'remove' messages received from the browser
// process modify the entries in a map of 'pending' objects. These objects are
// bound to the window object of the main frame when that window object is next
// cleared. These objects remain bound until the window object is cleared
// again.
class GinJavaBridgeDispatcher
: public base::SupportsWeakPtr<GinJavaBridgeDispatcher>,
public RenderFrameObserver {
public:
// GinJavaBridgeObjects are managed by gin. An object gets destroyed
// when it is no more referenced from JS. As GinJavaBridgeObject reports
// deletion of self to GinJavaBridgeDispatcher, we would not have stale
// pointers here.
typedef IDMap<GinJavaBridgeObject, IDMapExternalPointer> ObjectMap;
typedef ObjectMap::KeyType ObjectID;
explicit GinJavaBridgeDispatcher(RenderFrame* render_frame);
virtual ~GinJavaBridgeDispatcher();
// RenderFrameObserver override:
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
virtual void DidClearWindowObject() OVERRIDE;
void GetJavaMethods(ObjectID object_id, std::set<std::string>* methods);
bool HasJavaMethod(ObjectID object_id, const std::string& method_name);
scoped_ptr<base::Value> InvokeJavaMethod(ObjectID object_id,
const std::string& method_name,
const base::ListValue& arguments,
GinJavaBridgeError* error);
GinJavaBridgeObject* GetObject(ObjectID object_id);
void OnGinJavaBridgeObjectDeleted(ObjectID object_id);
private:
void OnAddNamedObject(const std::string& name,
ObjectID object_id);
void OnRemoveNamedObject(const std::string& name);
void OnSetAllowObjectContentsInspection(bool allow);
typedef std::map<std::string, ObjectID> NamedObjectMap;
NamedObjectMap named_objects_;
ObjectMap objects_;
bool inside_did_clear_window_object_;
DISALLOW_COPY_AND_ASSIGN(GinJavaBridgeDispatcher);
};
} // namespace content
#endif // CONTENT_RENDERER_JAVA_GIN_JAVA_BRIDGE_DISPATCHER_H_
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