/*
    * Copyright (C) 2007-2012 Argeo GmbH
    *
    * 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 org.argeo.connect.ui.parts;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import javax.jcr.Node;
  import javax.jcr.Property;
  import javax.jcr.PropertyType;
  import javax.jcr.Session;
  
  import org.argeo.connect.ConnectConstants;
  import org.argeo.connect.resources.ResourcesNames;
  import org.argeo.connect.resources.ResourcesService;
  import org.argeo.connect.resources.ResourcesTypes;
  import org.argeo.connect.ui.widgets.SimpleJcrTableComposite;
  import org.argeo.connect.util.ConnectJcrUtils;
  import org.argeo.eclipse.ui.EclipseUiUtils;
  import org.argeo.eclipse.ui.jcr.lists.JcrColumnDefinition;
  import org.eclipse.jface.dialogs.TrayDialog;
  import org.eclipse.jface.viewers.DoubleClickEvent;
  import org.eclipse.jface.viewers.IDoubleClickListener;
  import org.eclipse.jface.viewers.ISelectionChangedListener;
  import org.eclipse.jface.viewers.IStructuredSelection;
  import org.eclipse.jface.viewers.SelectionChangedEvent;
  import org.eclipse.swt.SWT;
  import org.eclipse.swt.graphics.Point;
  import org.eclipse.swt.widgets.Composite;
  import org.eclipse.swt.widgets.Control;
  import org.eclipse.swt.widgets.Shell;
  
  /**
   * Dialog with a filtered list to choose a country
   */
  public class PickUpCountryDialog extends TrayDialog {
  	private static final long serialVersionUID = 3766899676609659573L;
  
  	// Context
  	private ResourcesService resourceService;
  	private final Session session;
  	private Node selectedNode;
  
  	// this page widgets and UI objects
  	private SimpleJcrTableComposite tableCmp;
  	private final String title;
  
  	private List<JcrColumnDefinition> colDefs = new ArrayList<JcrColumnDefinition>();
  	{ // By default, it displays only title
  		colDefs.add(new JcrColumnDefinition(null, ResourcesNames.RESOURCES_TAG_CODE, PropertyType.STRING, "Iso Code", 100));
  		colDefs.add(new JcrColumnDefinition(null, Property.JCR_TITLE, PropertyType.STRING, "Label", 240));
  	};
  
  	public PickUpCountryDialog(Shell parentShell, ResourcesService resourceService, Session session, String title) {
  		super(parentShell);
  		this.resourceService = resourceService;
  		this.session = session;
  		this.title = title;
  	}
  
  	protected Point getInitialSize() {
  		return new Point(400, 400);
  	}
  
  	protected Control createDialogArea(Composite parent) {
  		Composite dialogArea = (Composite) super.createDialogArea(parent);
  
  		Node tagParent = resourceService.getTagLikeResourceParent(session, ConnectConstants.RESOURCE_COUNTRY);
  
  		int style = SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL;
  		tableCmp = new SimpleJcrTableComposite(dialogArea, style, session, ConnectJcrUtils.getPath(tagParent),
  				ResourcesTypes.RESOURCES_ENCODED_TAG, colDefs, true, false);
  		tableCmp.setLayoutData(EclipseUiUtils.fillAll());
  
  		// Add listeners
  		tableCmp.getTableViewer().addDoubleClickListener(new MyDoubleClickListener());
  		tableCmp.getTableViewer().addSelectionChangedListener(new MySelectionChangedListener());
  
  		parent.pack();
  		return dialogArea;
  	}
  
  	public String getSelected() {
  		if (selectedNode != null)
  			return ConnectJcrUtils.get(selectedNode, ResourcesNames.RESOURCES_TAG_CODE);
  		else
 			return null;
 	}
 
 	protected void configureShell(Shell shell) {
 		super.configureShell(shell);
 		shell.setText(title);
 	}
 
 	class MySelectionChangedListener implements ISelectionChangedListener {
 		@Override
 		public void selectionChanged(SelectionChangedEvent event) {
 			if (event.getSelection().isEmpty()) {
 				selectedNode = null;
 				return;
 			}
 
 			Object obj = ((IStructuredSelection) event.getSelection()).getFirstElement();
 			if (obj instanceof Node) {
 				selectedNode = (Node) obj;
 			}
 		}
 	}
 
 	class MyDoubleClickListener implements IDoubleClickListener {
 		public void doubleClick(DoubleClickEvent evt) {
 			if (evt.getSelection().isEmpty()) {
 				selectedNode = null;
 				return;
 			}
 
 			Object obj = ((IStructuredSelection) evt.getSelection()).getFirstElement();
 			if (obj instanceof Node) {
 				selectedNode = (Node) obj;
 				okPressed();
 			}
 		}
 	}
 }