plugins/tasks/tasks-core/src/com/intellij/tasks/context/OpenEditorsContextProvider.java

/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package com.intellij.tasks.context;

import com.intellij.openapi.fileEditor.FileEditorManager;
import com.intellij.openapi.fileEditor.impl.DockableEditorTabbedContainer;
import com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl;
import com.intellij.ui.docking.DockContainer;
import com.intellij.ui.docking.DockManager;
import com.intellij.ui.docking.impl.DockManagerImpl;
import org.jdom.Element;
import org.jetbrains.annotations.NotNull;

/**
 * @author Dmitry Avdeev
 */
public class OpenEditorsContextProvider extends WorkingContextProvider {

  private final FileEditorManagerImpl myFileEditorManager;
  private final DockManagerImpl myDockManager;

  public OpenEditorsContextProvider(FileEditorManager fileEditorManager, DockManager dockManager) {
    myDockManager = (DockManagerImpl)dockManager;
    myFileEditorManager = fileEditorManager instanceof FileEditorManagerImpl ? (FileEditorManagerImpl)fileEditorManager : null;
  }

  @NotNull
  @Override
  public String getId() {
    return "editors";
  }

  @NotNull
  @Override
  public String getDescription() {
    return "Open editors and positions";
  }

  public void saveContext(Element element) {
    if (myFileEditorManager != null) {
      myFileEditorManager.writeExternal(element);
    }
    Element state = myDockManager.getState();
    element.addContent(state);
  }

  public void loadContext(Element element) {
    if (myFileEditorManager != null) {
      myFileEditorManager.readExternal(element);
      myFileEditorManager.getMainSplitters().openFiles();
    }
    Element dockState = element.getChild("DockManager");
    if (dockState != null) {
      myDockManager.loadState(dockState);
      myDockManager.readState();
    }
  }

  public void clearContext() {
    if (myFileEditorManager != null) {
      myFileEditorManager.closeAllFiles();
      myFileEditorManager.getMainSplitters().clear();
    }
    for (DockContainer container : myDockManager.getContainers()) {
      if (container instanceof DockableEditorTabbedContainer) {
        container.closeAll();
      }
    }
  }
}