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      1 // Copyright (c) 2012 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.
      4 
      5 #ifndef CONTENT_PUBLIC_BROWSER_DEVTOOLS_AGENT_HOST_H_
      6 #define CONTENT_PUBLIC_BROWSER_DEVTOOLS_AGENT_HOST_H_
      7 
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "base/basictypes.h"
     12 #include "base/memory/ref_counted.h"
     13 #include "content/common/content_export.h"
     14 
     15 namespace content {
     16 
     17 class DevToolsExternalAgentProxyDelegate;
     18 class RenderViewHost;
     19 class WebContents;
     20 
     21 // Describes interface for managing devtools agents from browser process.
     22 class CONTENT_EXPORT DevToolsAgentHost
     23     : public base::RefCounted<DevToolsAgentHost> {
     24  public:
     25   // Returns DevToolsAgentHost with a given |id| or NULL of it does not exist.
     26   static scoped_refptr<DevToolsAgentHost> GetForId(const std::string& id);
     27 
     28   // Returns DevToolsAgentHost that can be used for inspecting |web_contents|.
     29   // New DevToolsAgentHost will be created if it does not exist.
     30   static scoped_refptr<DevToolsAgentHost> GetOrCreateFor(
     31       WebContents* web_contents);
     32 
     33   // Returns DevToolsAgentHost that can be used for inspecting |rvh|.
     34   // New DevToolsAgentHost will be created if it does not exist.
     35   static scoped_refptr<DevToolsAgentHost> GetOrCreateFor(RenderViewHost* rvh);
     36 
     37   // Returns true iff an instance of DevToolsAgentHost for the |rvh|
     38   // does exist.
     39   static bool HasFor(RenderViewHost* rvh);
     40 
     41   // Returns DevToolsAgentHost that can be used for inspecting shared worker
     42   // with given worker process host id and routing id.
     43   static scoped_refptr<DevToolsAgentHost> GetForWorker(int worker_process_id,
     44                                                        int worker_route_id);
     45 
     46   // Creates DevToolsAgentHost that communicates to the target by means of
     47   // provided |delegate|. |delegate| ownership is passed to the created agent
     48   // host.
     49   static scoped_refptr<DevToolsAgentHost> Create(
     50       DevToolsExternalAgentProxyDelegate* delegate);
     51 
     52   static bool IsDebuggerAttached(WebContents* web_contents);
     53 
     54   // Returns a list of all existing RenderViewHost's that can be debugged.
     55   static std::vector<RenderViewHost*> GetValidRenderViewHosts();
     56 
     57   // Returns true if there is a client attached.
     58   virtual bool IsAttached() = 0;
     59 
     60   // Starts inspecting element at position (|x|, |y|) in the specified page.
     61   virtual void InspectElement(int x, int y) = 0;
     62 
     63   // Returns the unique id of the agent.
     64   virtual std::string GetId() = 0;
     65 
     66   // Returns render view host instance for this host if any.
     67   virtual RenderViewHost* GetRenderViewHost() = 0;
     68 
     69   // Temporarily detaches render view host from this host. Must be followed by
     70   // a call to ConnectRenderViewHost (may leak the host instance otherwise).
     71   virtual void DisconnectRenderViewHost() = 0;
     72 
     73   // Attaches render view host to this host.
     74   virtual void ConnectRenderViewHost(RenderViewHost* rvh) = 0;
     75 
     76   // Returns true if DevToolsAgentHost is for worker.
     77   virtual bool IsWorker() const = 0;
     78 
     79  protected:
     80   friend class base::RefCounted<DevToolsAgentHost>;
     81   virtual ~DevToolsAgentHost() {}
     82 };
     83 
     84 }  // namespace content
     85 
     86 #endif  // CONTENT_PUBLIC_BROWSER_DEVTOOLS_AGENT_HOST_H_
     87