// Copyright (c) 2010 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.debug.core;

import org.chromium.debug.core.model.ResourceManager;

import org.chromium.debug.core.model.VmResourceId;

import org.eclipse.core.resources.IFile;

import org.eclipse.core.resources.IProject;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.debug.core.DebugPlugin;

import org.eclipse.debug.core.sourcelookup.ISourceContainer;

import org.eclipse.debug.core.sourcelookup.ISourceContainerType;

import org.eclipse.debug.core.sourcelookup.ISourceContainerTypeDelegate;

import org.eclipse.debug.core.sourcelookup.ISourceLookupDirector;

/**

 * A source container implementation that wraps V8 virtual project. Currently virtual project

 * has a flat file structure, so the container is accordingly one-level.

 * <p>

 * Unlike other implementation of {@link ISourceContainer} this class initially gets instantiated

 * with no data. In this state it serves as an empty container because actual VM scripts are

 * not available yet. Launch configuration UI will use it in this state more as a symbolic

 * place-holder in sources tab. Later when VM is connected, method

 * {@link #init(ISourceLookupDirector)} will be called and the actual content will be set.

 */

public class VProjectSourceContainer implements ISourceContainer {

  private static final String TYPE_ID =

      "org.chromium.debug.core.VProjectSourceContainer.type"; //$NON-NLS-1$

  private ChromiumSourceDirector chromiumSourceDirector = null;

  VProjectSourceContainer() {

  }

  public void init(ISourceLookupDirector director) {

    if (director instanceof ChromiumSourceDirector) {

      chromiumSourceDirector = (ChromiumSourceDirector) director;

    }

  }

  public void dispose() {

  }

  public Object[] findSourceElements(String name) {

    if (chromiumSourceDirector == null) {

      return new Object[0];

    }

    ResourceManager resourceManager = chromiumSourceDirector.getResourceManager();

    IFile file = resourceManager.getFile(name);

    if (file == null) {

      return new Object[0];

    }

    return new Object[] { file };

  }

  public String getName() {

    IProject project = null;

    if (chromiumSourceDirector != null) {

      project = chromiumSourceDirector.getProject();

    }

    if (project == null) {

      return Messages.VProjectSourceContainer_DEFAULT_TYPE_NAME;

    } else {

      return project.getName();

    }

  }

  public ISourceContainer[] getSourceContainers() {

    return null;

  }

  public ISourceContainerType getType() {

    return DebugPlugin.getDefault().getLaunchManager().getSourceContainerType(TYPE_ID);

  }

  public boolean isComposite() {

    return false;

  }

  public VmResourceId findScriptId(IFile resource) {

    if (chromiumSourceDirector == null) {

      throw new IllegalStateException();

    }

    return chromiumSourceDirector.getResourceManager().getResourceId(resource);

  }

  public Object getAdapter(Class adapter) {

    return null;

  }

  /**

   * A type delegate that implements a trivial memento. We do not save any actual data here,

   * because it all should be derived from a current VM launch.

   */

  public static class TypeDelegate implements ISourceContainerTypeDelegate {

    public ISourceContainer createSourceContainer(String memento) throws CoreException {

      return new VProjectSourceContainer();

    }

    public String getMemento(ISourceContainer container) throws CoreException {

      return "VProjectSourceContainer.memento.stub"; //$NON-NLS-1$

    }

  }

}