content: /*******************************************************************************
   * Copyright (c) 2000, 2008 IBM Corporation and others.
   * 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:
   *     IBM Corporation - initial API and implementation
   *     Aaron Luchko, aluchko@redhat.com - 105926 [Formatter] Exporting Unnamed profile fails silently
   *******************************************************************************/
  package org.eclipse.wst.jsdt.internal.ui.preferences.formatter;
  
  import java.util.List;
  import java.util.Observable;
  import java.util.Observer;
  
  import org.eclipse.core.resources.IProject;
  import org.eclipse.core.runtime.preferences.IScopeContext;
  import org.eclipse.swt.layout.GridData;
  import org.eclipse.swt.widgets.Composite;
  import org.eclipse.swt.widgets.Shell;
  import org.eclipse.wst.jsdt.internal.ui.preferences.PreferencesAccess;
  import org.eclipse.wst.jsdt.internal.ui.preferences.formatter.ProfileManager.Profile;
  import org.eclipse.wst.jsdt.ui.JavaScriptUI;
  
  
  
  /**
   * The code formatter preference page. 
   */
  
  public class CodeFormatterConfigurationBlock extends ProfileConfigurationBlock {
      
      private static final String FORMATTER_DIALOG_PREFERENCE_KEY= "formatter_page"; //$NON-NLS-1$
  
  	private static final String DIALOGSTORE_LASTSAVELOADPATH= JavaScriptUI.ID_PLUGIN + ".codeformatter"; //$NON-NLS-1$
      
  	/**
       * Some Java source code used for preview.
       */
      protected final String PREVIEW= "/**\n* " + //$NON-NLS-1$
      		FormatterMessages.CodingStyleConfigurationBlock_preview_title + 
      		"\n*/\n\n" + //$NON-NLS-1$
      		"" + //$NON-NLS-1$
      		"var index=0;" + //$NON-NLS-1$
      		"var arr=[];" + //$NON-NLS-1$
      		"var obj={x:\"\",y:function(){}};" + //$NON-NLS-1$
      		"function foo(){var1= new Object();}" + //$NON-NLS-1$
      		"function pop(){return arr[index--];}" + //$NON-NLS-1$
      		"function push( elem){arr[index++]=elem;}" + //$NON-NLS-1$
      		"function isEmpty() {return index==0;}" + //$NON-NLS-1$
      		""; //$NON-NLS-1$
      
  	private class PreviewController implements Observer {
  
  		public PreviewController(ProfileManager profileManager) {
  			profileManager.addObserver(this);
  			fJavaPreview.setWorkingValues(profileManager.getSelected().getSettings());
  			fJavaPreview.update();
  		}
  
  		public void update(Observable o, Object arg) {
  			final int value= ((Integer)arg).intValue();
  			switch (value) {
  			case ProfileManager.PROFILE_CREATED_EVENT:
  			case ProfileManager.PROFILE_DELETED_EVENT:
  			case ProfileManager.SELECTION_CHANGED_EVENT:
  			case ProfileManager.SETTINGS_CHANGED_EVENT:
  				fJavaPreview.setWorkingValues(((ProfileManager)o).getSelected().getSettings());
  				fJavaPreview.update();
  			}
  		}
  
  	}
  
      
      /**
  	 * The JavaPreview.
  	 */
  	private JavaPreview fJavaPreview;
  
  	/**
  	 * Create a new <code>CodeFormatterConfigurationBlock</code>.
  	 */
  	public CodeFormatterConfigurationBlock(IProject project, PreferencesAccess access) {
  		super(project, access, DIALOGSTORE_LASTSAVELOADPATH);
  	}
  
  	protected IProfileVersioner createProfileVersioner() {
  	    return new ProfileVersioner();
      }
  	
  	protected ProfileStore createProfileStore(IProfileVersioner versioner) {
  	    return new FormatterProfileStore(versioner);
      }
  	
  	protected ProfileManager createProfileManager(List profiles, IScopeContext context, PreferencesAccess access, IProfileVersioner profileVersioner) {
  	    return new FormatterProfileManager(profiles, context, access, profileVersioner);
      }
  	
  	protected void configurePreview(Composite composite, int numColumns, ProfileManager profileManager) {
  		createLabel(composite, FormatterMessages.CodingStyleConfigurationBlock_preview_label_text, numColumns);
  		CompilationUnitPreview result= new CompilationUnitPreview(profileManager.getSelected().getSettings(), composite);
          result.setPreviewText(PREVIEW);
  		fJavaPreview= result;
  
  		final GridData gd = new GridData(GridData.FILL_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL);
  		gd.horizontalSpan = numColumns;
  		gd.verticalSpan= 7;
  		gd.widthHint = 0;
  		gd.heightHint = 0;
  		fJavaPreview.getControl().setLayoutData(gd);
  		
  		new PreviewController(profileManager);
  	}
  
      
      protected ModifyDialog createModifyDialog(Shell shell, Profile profile, ProfileManager profileManager, ProfileStore profileStore, boolean newProfile) {
          return new FormatterModifyDialog(shell, profile, profileManager, profileStore, newProfile, FORMATTER_DIALOG_PREFERENCE_KEY, DIALOGSTORE_LASTSAVELOADPATH);
      }
  }
  