/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.directory.studio.templateeditor.editor.widgets;
import java.util.HashMap;
import java.util.Map;
import org.apache.directory.studio.entryeditors.IEntryEditor;
import org.apache.directory.studio.ldapbrowser.core.model.IAttribute;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.forms.widgets.FormToolkit;
import org.apache.directory.studio.templateeditor.model.widgets.TemplateRadioButtons;
import org.apache.directory.studio.templateeditor.model.widgets.ValueItem;
/**
* This class implements an editor radio buttons.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class EditorRadioButtons extends EditorWidget<TemplateRadioButtons>
{
/** The map of (ValueItem,Button) elements used in the UI */
private Map<ValueItem, Button> valueItemsToButtonsMap = new HashMap<ValueItem, Button>();
private Map<Button, ValueItem> buttonsToValueItemsMap = new HashMap<Button, ValueItem>();
/** The currently selected item */
private ValueItem selectedItem;
/** The selection listener */
private SelectionListener selectionListener = new SelectionAdapter()
{
public void widgetSelected( SelectionEvent e )
{
// Saving the selected item
selectedItem = buttonsToValueItemsMap.get( e.getSource() );
// Updating the entry
updateEntry();
}
};
/**
* Creates a new instance of EditorRadioButtons.
*
* @param editor
* the associated editor
* @param templateRadioButtons
* the associated template radio buttons
* @param toolkit
* the associated toolkit
*/
public EditorRadioButtons( IEntryEditor editor, TemplateRadioButtons templateRadioButtons,
FormToolkit toolkit )
{
super( templateRadioButtons, editor, toolkit );
}
/**
* {@inheritDoc}
*/
public Composite createWidget( Composite parent )
{
// Creating and initializing the widget UI
Composite composite = initWidget( parent );
// Updating the widget's content
updateWidget();
// Adding the listeners
addListeners();
return composite;
}
/**
* Creates and initializes the widget UI.
*
* @param parent
* the parent composite
* @return
* the associated composite
*/
private Composite initWidget( Composite parent )
{
// Creating the widget composite
Composite composite = getToolkit().createComposite( parent );
composite.setLayout( new GridLayout() );
composite.setLayoutData( getGridata() );
// Creating the layout
GridLayout gl = new GridLayout();
gl.marginHeight = gl.marginWidth = 0;
gl.horizontalSpacing = gl.verticalSpacing = 0;
composite.setLayout( gl );
// Creating the Radio Buttons
for ( ValueItem valueItem : getWidget().getButtons() )
{
Button button = getToolkit().createButton( composite, valueItem.getLabel(), SWT.RADIO );
button.setEnabled( getWidget().isEnabled() );
valueItemsToButtonsMap.put( valueItem, button );
buttonsToValueItemsMap.put( button, valueItem );
}
return composite;
}
/**
* Updates the widget's content.
*/
private void updateWidget()
{
// Getting the attribute value
IAttribute attribute = getAttribute();
if ( ( attribute != null ) && ( attribute.isString() ) && ( attribute.getValueSize() > 0 ) )
{
String value = attribute.getStringValue();
for ( ValueItem valueItem : valueItemsToButtonsMap.keySet() )
{
Button button = valueItemsToButtonsMap.get( valueItem );
if ( button != null && !button.isDisposed() )
{
button.setSelection( value.equals( valueItem.getValue() ) );
}
}
}
}
/**
* Adds the listeners.
*/
private void addListeners()
{
for ( final ValueItem valueItem : valueItemsToButtonsMap.keySet() )
{
Button button = valueItemsToButtonsMap.get( valueItem );
if ( button != null )
{
button.addSelectionListener( selectionListener );
}
}
}
/**
* This method is called when the entry has been updated in the UI.
*/
private void updateEntry()
{
// Getting the attribute
IAttribute attribute = getAttribute();
if ( attribute == null )
{
if ( selectedItem != null )
{
// Creating a new attribute with the value
addNewAttribute( selectedItem.getValue() );
}
}
else
{
if ( ( selectedItem != null ) && ( !selectedItem.equals( "" ) ) ) //$NON-NLS-1$
{
// Modifying the existing attribute
modifyAttributeValue( selectedItem.getValue() );
}
else
{
// Deleting the attribute
deleteAttribute();
}
}
}
/**
* {@inheritDoc}
*/
public void update()
{
updateWidget();
}
/**
* {@inheritDoc}
*/
public void dispose()
{
// Nothing to do
}
}