/*

 * Copyright (c) 2010, Google Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *

 *     * Redistributions of source code must retain the above copyright

 * notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above

 * copyright notice, this list of conditions and the following disclaimer

 * in the documentation and/or other materials provided with the

 * distribution.

 *     * Neither the name of Google Inc. nor the names of its

 * contributors may be used to endorse or promote products derived from

 * this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef ScriptDebugServer_h

#define ScriptDebugServer_h

#if ENABLE(JAVASCRIPT_DEBUGGER)

#include "JavaScriptCallFrame.h"

#include "PlatformString.h"

#include "ScriptBreakpoint.h"

#include "StringHash.h"

#include "Timer.h"

#include <v8-debug.h>

#include <wtf/HashMap.h>

#include <wtf/Noncopyable.h>

#include <wtf/PassOwnPtr.h>

namespace WebCore {

class Page;

class ScriptDebugListener;

class ScriptDebugServer : public Noncopyable {

public:

    static ScriptDebugServer& shared();

    void addListener(ScriptDebugListener*, Page*);

    void removeListener(ScriptDebugListener*, Page*);

    bool setBreakpoint(const String& sourceID, ScriptBreakpoint breakpoint, unsigned lineNumber, unsigned* actualLineNumber);

    void removeBreakpoint(const String& sourceID, unsigned lineNumber);

    void clearBreakpoints();

    void setBreakpointsActivated(bool activated);

    void activateBreakpoints() { setBreakpointsActivated(true); }

    void deactivateBreakpoints() { setBreakpointsActivated(false); }

    enum PauseOnExceptionsState {

        DontPauseOnExceptions,

        PauseOnAllExceptions,

        PauseOnUncaughtExceptions

    };

    PauseOnExceptionsState pauseOnExceptionsState();

    void setPauseOnExceptionsState(PauseOnExceptionsState pauseOnExceptionsState);

    void pause() { }

    void continueProgram();

    void stepIntoStatement();

    void stepOverStatement();

    void stepOutOfFunction();

    bool editScriptSource(const String& sourceID, const String& newContent, String& newSourceOrErrorMessage);

    void recompileAllJSFunctionsSoon() { }

    void recompileAllJSFunctions(Timer<ScriptDebugServer>* = 0) { }

    void pageCreated(Page*) { }

    // v8-specific methods.

    void setDebuggerScriptSource(const String& scriptSource);

    class ClientMessageLoop {

    public:

        virtual ~ClientMessageLoop() { }

        virtual void run(Page*) = 0;

        virtual void quitNow() = 0;

    };

    void setClientMessageLoop(PassOwnPtr<ClientMessageLoop> clientMessageLoop) { m_clientMessageLoop = clientMessageLoop; }

    PassRefPtr<JavaScriptCallFrame> currentCallFrame();

    void setEnabled(bool);

    bool isDebuggerAlwaysEnabled();

private:

    ScriptDebugServer();

    ~ScriptDebugServer() { }

    static void v8DebugEventCallback(const v8::Debug::EventDetails& eventDetails);

    void handleV8DebugEvent(const v8::Debug::EventDetails& eventDetails);

    void dispatchDidParseSource(ScriptDebugListener* listener, v8::Handle<v8::Object> sourceObject);

    void ensureDebuggerScriptCompiled();

    void didResume();

    typedef HashMap<Page*, ScriptDebugListener*> ListenersMap;

    ListenersMap m_listenersMap;

    String m_debuggerScriptSource;

    PauseOnExceptionsState m_pauseOnExceptionsState;

    OwnHandle<v8::Object> m_debuggerScript;

    RefPtr<JavaScriptCallFrame> m_currentCallFrame;

    OwnHandle<v8::Object> m_executionState;

    OwnPtr<ClientMessageLoop> m_clientMessageLoop;

    Page* m_pausedPage;

    bool m_enabled;

};

} // namespace WebCore

#endif // ENABLE(JAVASCRIPT_DEBUGGER)

#endif // ScriptDebugServer_h