// Copyright (c) 2009 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.

package org.chromium.sdk.internal;

import java.io.IOException;

import org.chromium.sdk.Breakpoint;

import org.chromium.sdk.CallbackSemaphore;

import org.chromium.sdk.JavascriptVm;

import org.chromium.sdk.SyncCallback;

import org.chromium.sdk.internal.tools.v8.MethodIsBlockingException;

/**

 * Base implementation of JavascriptVm.

 */

public abstract class JavascriptVmImpl implements JavascriptVm {

  protected JavascriptVmImpl() {

  }

  public void suspend(SuspendCallback callback) {

    getDebugSession().suspend(callback);

  }

  public void getScripts(ScriptsCallback callback) throws MethodIsBlockingException {

    CallbackSemaphore callbackSemaphore = new CallbackSemaphore();

    getDebugSession().getScriptLoader().loadAllScripts(callback, callbackSemaphore);

    boolean res = callbackSemaphore.tryAcquireDefault();

    if (!res) {

      callback.failure("Timeout");

    }

  }

  public void setBreakpoint(Breakpoint.Type type, String target, int line,

      int position, boolean enabled, String condition, int ignoreCount,

      BreakpointCallback callback, SyncCallback syncCallback) {

    getDebugSession().getBreakpointManager()

        .setBreakpoint(type, target, line, position, enabled, condition, ignoreCount, callback,

        syncCallback);

  }

  public void listBreakpoints(final ListBreakpointsCallback callback, SyncCallback syncCallback) {

    getDebugSession().getBreakpointManager().reloadBreakpoints(callback, syncCallback);

  }

  protected abstract DebugSession getDebugSession();

  // TODO(peter.rybin): This message will be obsolete in JavaSE-1.6.

  public static IOException newIOException(String message, Throwable cause) {

    IOException result = new IOException(message);

    result.initCause(cause);

    return result;

  }

}