/* 
 * Copyright (c) 2008 Stiftung Deutsches Elektronen-Synchrotron, 
 * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
 *
 * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS. 
 * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED 
 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND 
 * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR 
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE 
 * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR 
 * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. 
 * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
 * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 
 * OR MODIFICATIONS.
 * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION, 
 * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS 
 * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY 
 * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
 */
 package org.csstudio.sds.ui.internal.preferences;

import java.util.HashMap;
import java.util.Set;

import org.csstudio.sds.model.initializers.WidgetInitializationService;
import org.csstudio.sds.model.initializers.WidgetInitializationService.ControlSystemSchemaDescriptor;
import org.csstudio.sds.ui.SdsUiPlugin;
import org.csstudio.sds.ui.internal.localization.Messages;
import org.eclipse.jface.preference.FieldEditorPreferencePage;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.RadioGroupFieldEditor;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;

/**
 * A preference page to choose the widget model initialization schema.
 * 
 * @author Stefan Hofer
 * @version $Revision: 1.8 $
 *
 */
public final class SchemaPreferencePage extends FieldEditorPreferencePage implements
		IWorkbenchPreferencePage {

	/**
	 * The proxies that hold the schema information.
	 */
	private HashMap<String,ControlSystemSchemaDescriptor> _schemaDescriptors;

	/**
	 * Constructor.
	 */
	public SchemaPreferencePage() {
		super(FieldEditorPreferencePage.GRID);
		setMessage(Messages.getString("SchemaPreferencePage.PAGE_TITLE")); //$NON-NLS-1$
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	protected void createFieldEditors() {
		final Set<String> schemaIds = _schemaDescriptors.keySet();
		
		String[][] labelAndValues = new String[schemaIds.size()][schemaIds.size()];
		int i = 0;
		
		for (String schemaId : schemaIds) {
			String label = _schemaDescriptors.get(schemaId).getDescription();
			labelAndValues[i++] = new String[] {label, schemaId};
		}
		
		RadioGroupFieldEditor radioFields = new RadioGroupFieldEditor(WidgetInitializationService.PROP_SCHEMA,
				Messages.getString("SchemaPreferencePage.RADIO_DESCRIPTION"), //$NON-NLS-1$
				1, 
				labelAndValues, 
				getFieldEditorParent());
		
		addField(radioFields);
	}
	
	/**
	 * {@inheritDoc}
	 */
	@Override
	protected IPreferenceStore doGetPreferenceStore() {
		return SdsUiPlugin.getCorePreferenceStore();
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void init(final IWorkbench workbench) {
		_schemaDescriptors = WidgetInitializationService.getInstance().getInitializationSchemaDescriptors();
	}

}