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      1 /*
      2  * Copyright (C) 2011 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef InspectorBaseAgent_h
     32 #define InspectorBaseAgent_h
     33 
     34 #include "InspectorBackendDispatcher.h"
     35 #include "wtf/Forward.h"
     36 #include "wtf/Vector.h"
     37 #include "wtf/text/WTFString.h"
     38 
     39 namespace WebCore {
     40 
     41 class InspectorFrontend;
     42 class InspectorCompositeState;
     43 class InspectorState;
     44 class InstrumentingAgents;
     45 
     46 class InspectorBaseAgentInterface {
     47 public:
     48     InspectorBaseAgentInterface(const String&, InstrumentingAgents*, InspectorCompositeState*);
     49     virtual ~InspectorBaseAgentInterface();
     50 
     51     virtual void setFrontend(InspectorFrontend*) { }
     52     virtual void clearFrontend() { }
     53     virtual void restore() { }
     54     virtual void registerInDispatcher(InspectorBackendDispatcher*) = 0;
     55     virtual void discardAgent() { }
     56 
     57     String name() { return m_name; }
     58 
     59 protected:
     60     InstrumentingAgents* m_instrumentingAgents;
     61     InspectorState* m_state;
     62 
     63 private:
     64     String m_name;
     65 };
     66 
     67 class InspectorAgentRegistry {
     68 public:
     69     void append(PassOwnPtr<InspectorBaseAgentInterface>);
     70 
     71     void setFrontend(InspectorFrontend*);
     72     void clearFrontend();
     73     void restore();
     74     void registerInDispatcher(InspectorBackendDispatcher*);
     75     void discardAgents();
     76 
     77 private:
     78     Vector<OwnPtr<InspectorBaseAgentInterface> > m_agents;
     79 };
     80 
     81 template<typename T>
     82 class InspectorBaseAgent : public InspectorBaseAgentInterface {
     83 public:
     84     virtual ~InspectorBaseAgent() { }
     85 
     86     virtual void registerInDispatcher(InspectorBackendDispatcher* dispatcher)
     87     {
     88         dispatcher->registerAgent(static_cast<T*>(this));
     89     }
     90 
     91 protected:
     92     InspectorBaseAgent(const String& name, InstrumentingAgents* instrumentingAgents, InspectorCompositeState* inspectorState)
     93         : InspectorBaseAgentInterface(name, instrumentingAgents, inspectorState)
     94     {
     95     }
     96 };
     97 
     98 } // namespace WebCore
     99 
    100 #endif // !defined(InspectorBaseAgent_h)
    101