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
   *******************************************************************************/
  package org.eclipse.wst.jsdt.internal.ui.text.folding;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.Map;
  
  import org.eclipse.jface.preference.IPreferenceStore;
  import org.eclipse.swt.SWT;
  import org.eclipse.swt.events.SelectionEvent;
  import org.eclipse.swt.events.SelectionListener;
  import org.eclipse.swt.layout.GridData;
  import org.eclipse.swt.layout.GridLayout;
  import org.eclipse.swt.widgets.Button;
  import org.eclipse.swt.widgets.Composite;
  import org.eclipse.swt.widgets.Control;
  import org.eclipse.swt.widgets.Label;
  import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin;
  import org.eclipse.wst.jsdt.internal.ui.preferences.OverlayPreferenceStore;
  import org.eclipse.wst.jsdt.internal.ui.preferences.OverlayPreferenceStore.OverlayKey;
  import org.eclipse.wst.jsdt.ui.PreferenceConstants;
  import org.eclipse.wst.jsdt.ui.text.folding.IJavaFoldingPreferenceBlock;
  
  
  /**
   * Java default folding preferences.
   *
   * 
   */
  public class DefaultJavaFoldingPreferenceBlock implements IJavaFoldingPreferenceBlock {
  
  	private IPreferenceStore fStore;
  	private OverlayPreferenceStore fOverlayStore;
  	private OverlayKey[] fKeys;
  	private Map fCheckBoxes= new HashMap();
  	private SelectionListener fCheckBoxListener= new SelectionListener() {
  		public void widgetDefaultSelected(SelectionEvent e) {
  		}
  		public void widgetSelected(SelectionEvent e) {
  			Button button= (Button) e.widget;
  			fOverlayStore.setValue((String) fCheckBoxes.get(button), button.getSelection());
  		}
  	};
  
  
  	public DefaultJavaFoldingPreferenceBlock() {
  		fStore= JavaScriptPlugin.getDefault().getPreferenceStore();
  		fKeys= createKeys();
  		fOverlayStore= new OverlayPreferenceStore(fStore, fKeys);
  	}
  
  	private OverlayKey[] createKeys() {
  		ArrayList overlayKeys= new ArrayList();
  
  		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, PreferenceConstants.EDITOR_FOLDING_JAVADOC));
  //		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, PreferenceConstants.EDITOR_FOLDING_INNERTYPES));
  		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, PreferenceConstants.EDITOR_FOLDING_METHODS));
  //		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, PreferenceConstants.EDITOR_FOLDING_IMPORTS));
  		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, PreferenceConstants.EDITOR_FOLDING_HEADERS));
  
  		return (OverlayKey[]) overlayKeys.toArray(new OverlayKey[overlayKeys.size()]);
  	}
  
  	/*
  	 * @see org.eclipse.wst.jsdt.internal.ui.text.folding.IJavaFoldingPreferences#createControl(org.eclipse.swt.widgets.Group)
  	 */
  	public Control createControl(Composite composite) {
  		fOverlayStore.load();
  		fOverlayStore.start();
  
  		Composite inner= new Composite(composite, SWT.NONE);
  		GridLayout layout= new GridLayout(1, true);
  		layout.verticalSpacing= 3;
  		layout.marginWidth= 0;
  		inner.setLayout(layout);
  
  		Label label= new Label(inner, SWT.LEFT);
  		label.setText(FoldingMessages.DefaultJavaFoldingPreferenceBlock_title);
  
  		addCheckBox(inner, FoldingMessages.DefaultJavaFoldingPreferenceBlock_comments, PreferenceConstants.EDITOR_FOLDING_JAVADOC, 0);
  		addCheckBox(inner, FoldingMessages.DefaultJavaFoldingPreferenceBlock_headers, PreferenceConstants.EDITOR_FOLDING_HEADERS, 0);
  //		addCheckBox(inner, FoldingMessages.DefaultJavaFoldingPreferenceBlock_innerTypes, PreferenceConstants.EDITOR_FOLDING_INNERTYPES, 0);
  		addCheckBox(inner, FoldingMessages.DefaultJavaFoldingPreferenceBlock_methods, PreferenceConstants.EDITOR_FOLDING_METHODS, 0);
  //		addCheckBox(inner, FoldingMessages.DefaultJavaFoldingPreferenceBlock_imports, PreferenceConstants.EDITOR_FOLDING_IMPORTS, 0);
  
  		return inner;
  	}
  
  	private Button addCheckBox(Composite parent, String label, String key, int indentation) {
  		Button checkBox= new Button(parent, SWT.CHECK);
  		checkBox.setText(label);
  
  		GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
  		gd.horizontalIndent= indentation;
  		gd.horizontalSpan= 1;
  		gd.grabExcessVerticalSpace= false;
  		checkBox.setLayoutData(gd);
  		checkBox.addSelectionListener(fCheckBoxListener);
  
  		fCheckBoxes.put(checkBox, key);
  
  		return checkBox;
  	}
  
  	private void initializeFields() {
  		Iterator it= fCheckBoxes.keySet().iterator();
  		while (it.hasNext()) {
  			Button b= (Button) it.next();
  			String key= (String) fCheckBoxes.get(b);
  			b.setSelection(fOverlayStore.getBoolean(key));
  		}
  	}
  
  	/*
  	 * @see org.eclipse.wst.jsdt.internal.ui.text.folding.AbstractJavaFoldingPreferences#performOk()
  	 */
  	public void performOk() {
  		fOverlayStore.propagate();
  	}
  
  
  	/*
  	 * @see org.eclipse.wst.jsdt.internal.ui.text.folding.AbstractJavaFoldingPreferences#initialize()
  	 */
  	public void initialize() {
  		initializeFields();
  	}
  
  	/*
  	 * @see org.eclipse.wst.jsdt.internal.ui.text.folding.AbstractJavaFoldingPreferences#performDefaults()
  	 */
  	public void performDefaults() {
  		fOverlayStore.loadDefaults();
  		initializeFields();
  	}
  
  	/*
  	 * @see org.eclipse.wst.jsdt.internal.ui.text.folding.AbstractJavaFoldingPreferences#dispose()
  	 */
  	public void dispose() {
  		fOverlayStore.stop();
  	}
  }
  