/**
 * <copyright>
 * 
 * Copyright (c) 2009-2010 Thales Corporate Services S.A.S.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 * Thales Corporate Services S.A.S - initial API and implementation
 * 
 * </copyright>
 */

package org.eclipse.egf.pattern.ui.editors;

import org.eclipse.egf.model.pattern.Pattern;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IMemento;
import org.eclipse.ui.IPersistableElement;

/**
 * 
 * @author Thomas Guiu
 * 
 */

public class PatternEditorInput implements IEditorInput {

  public static final String PATTERN_ID = "patternId"; //$NON-NLS-1$

  public static final String RESSOURCE_URI = "uri"; //$NON-NLS-1$

  private final PatternPersistableElement persistable = new PatternPersistableElement();

  private final String fragment;

  private final Resource resource;

  // Add for test read only mode --start;
  private boolean isReadOnly = false;

  public void setReadOnly(boolean isReadOnly) {
    this.isReadOnly = isReadOnly;
  }

  // Add for test read only mode --end;

  public PatternEditorInput(Resource resource, String fragment) {
    if (fragment == null || resource == null)
      throw new IllegalArgumentException();
    this.resource = resource;
    this.fragment = fragment;
  }

  public boolean exists() {
    return true;
  }

  public boolean isReadOnly() {
    return isReadOnly;
  }

  public Pattern getPattern() {
    return (Pattern) resource.getEObject(fragment);
  }

  public Resource getResource() {
    return resource;
  }

  public ImageDescriptor getImageDescriptor() {
    return null;
  }

  public String getName() {
    if (getPattern() == null)
      return ""; //$NON-NLS-1$
    return getPattern().getName();
  }

  public IPersistableElement getPersistable() {
    return persistable;
  }

  public String getToolTipText() {
    return resource.getURI().toPlatformString(false);
  }

  public Object getAdapter(Class adapter) {
    return null;
  }

  private class PatternPersistableElement implements IPersistableElement {
    public void saveState(IMemento memento) {
      if (getPattern() != null) {
        memento.putString(PATTERN_ID, getPattern().getID());
        memento.putString(RESSOURCE_URI, resource.getURI().toString());
      }
    }

    public String getFactoryId() {
      return "org.eclipse.egf.pattern.ui.pattern.factory.id"; //$NON-NLS-1$
    }

  }
}