/*
 * Copyright (c) 2012, the Dart project authors.
 * 
 * Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html
 * 
 * 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.google.dart.tools.ui.internal.text.correction;

import com.google.dart.tools.ui.internal.text.editor.DartEditor;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.bindings.TriggerSequence;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.keys.IBindingService;

/**
 * Handler to be used to run a quick fix or assist by keyboard shortcut
 * 
 * @coverage dart.editor.ui.correction
 */
public class CorrectionCommandHandler extends AbstractHandler {

  public static String getShortCutString(String proposalId) {
    if (proposalId != null) {
      IBindingService bindingService = (IBindingService) PlatformUI.getWorkbench().getAdapter(
          IBindingService.class);
      if (bindingService != null) {
        TriggerSequence[] activeBindingsFor = bindingService.getActiveBindingsFor(proposalId);
        if (activeBindingsFor.length > 0) {
          return activeBindingsFor[0].format();
        }
      }
    }
    return null;
  }

//  private final DartEditor fEditor;
//  private final String fId;
//
//  private final boolean fIsAssist;

  public CorrectionCommandHandler(DartEditor editor, String id, boolean isAssist) {
//    fEditor = editor;
//    fId = id;
//    fIsAssist = isAssist;
  }

  /**
   * Try to execute the correction command.
   * 
   * @return <code>true</code> iff the correction could be started
   * @since 3.6
   */
  public boolean doExecute() {
    // TODO(scheglov) restore this
//    ISelection selection = fEditor.getSelectionProvider().getSelection();
//    CompilationUnit cu = DartUI.getWorkingCopyManager().getWorkingCopy(fEditor.getEditorInput());
//    IAnnotationModel model = DartUI.getDocumentProvider().getAnnotationModel(
//        fEditor.getEditorInput());
//    if (selection instanceof ITextSelection && cu != null && model != null) {
//      if (!ActionUtil.isEditable(fEditor)) {
//        return false;
//      }
//      ICompletionProposal proposal = findCorrection(fId, fIsAssist, (ITextSelection) selection, cu,
//          model);
//      if (proposal != null) {
//        invokeProposal(proposal, ((ITextSelection) selection).getOffset());
//        return true;
//      }
//    }
    return false;
  }

  @Override
  public Object execute(ExecutionEvent event) throws ExecutionException {
    doExecute();
    return null;
  }
}