/*******************************************************************************
 * Copyright 2017 Capital One Services, LLC and Bitwise, Inc.
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 * 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 hydrograph.ui.propertywindow.widgets.listeners;

import hydrograph.ui.propertywindow.propertydialog.PropertyDialogButtonBar;
import hydrograph.ui.propertywindow.widgets.listeners.ListenerHelper.HelperType;

import org.eclipse.jface.fieldassist.ControlDecoration;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.Widget;


/**
 * The listener interface for receiving ELTFocusGained events. The class that is interested in processing a
 * ELTFocusGained event implements this interface, and the object created with that class is registered with a component
 * using the component's <code>addELTFocusGainedListener<code> method. When
 * the ELTFocusGained event occurs, that object's appropriate
 * method is invoked.
 * 
 * @see ELTFocusGainedEvent
 */
public class ELTFocusGainedListener implements IELTListener {

	ControlDecoration txtDecorator;

	@Override
	public int getListenerType() {
		return SWT.FocusIn;
	}

	@Override
	public Listener getListener(
			PropertyDialogButtonBar propertyDialogButtonBar,
			ListenerHelper helper, Widget... widgets) {
		final Widget[] widgetList = widgets;
		if (helper != null) {
			txtDecorator = (ControlDecoration) helper.get(HelperType.CONTROL_DECORATION);
		}

		Listener listener = new Listener() {

			@Override
			public void handleEvent(Event event) {
				String charSet = ((Text) widgetList[0]).getText().trim();
				if (event.type == SWT.FocusIn) {
					((Text) widgetList[0]).setText(charSet.replace("@{", "").replace("}", ""));
				}
			}
		};

		return listener;
	}

}