/*
    * Copyright (c) 2007 Regents of the University of California (Regents). Created
    * by TELS, Graduate School of Education, University of California at Berkeley.
    *
    * This software is distributed under the GNU Lesser General Public License, v2.
    *
    * Permission is hereby granted, without written agreement and without license
    * or royalty fees, to use, copy, modify, and distribute this software and its
    * documentation for any purpose, provided that the above copyright notice and
   * the following two paragraphs appear in all copies of this software.
   *
   * REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE. THE SOFTWAREAND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED
   * HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE
   * MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
   *
   * IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
   * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
   * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
   * REGENTS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  package org.telscenter.pas.steps.quickEditors.html;
  
  import java.awt.BorderLayout;
  import java.awt.event.ActionListener;
  import java.awt.event.FocusEvent;
  import java.awt.event.FocusListener;
  import java.net.MalformedURLException;
  import java.net.URL;
  
  import javax.swing.Action;
  import javax.swing.JButton;
  import javax.swing.JComponent;
  import javax.swing.JLabel;
  import javax.swing.JPanel;
  import javax.swing.JTextField;
  
  import net.miginfocom.swing.MigLayout;
  
  import org.apache.commons.lang.StringUtils;
  import org.telscenter.pas.common.ui.panel.TextEditorPanel;
  import org.telscenter.pas.steps.BrowseWebUI;
  import org.telscenter.pas.steps.BrowseWeb.PopupPreviewAction;
  
  /***
   * Creates the Authoring Mode for the OutsideLink Step
   * 
   * @author aperritano
   *
   */
  public class OutsideLinkQuickEditorUI extends HtmlQuickEditorUI {
  
  	private static final int TEXT_BOX_LEN = 32;
  
  	private JButton browseButton;
  	private JTextField externalUrlText;
  	private JButton previewButton;
  	
  	
  	/***
  	 * Creates the UI for the step specific authoring that is displayed
  	 * on the bottom right main section of the authoring tool
  	 */
  	protected void createUI() { 
  		this.setOpaque(false);
  		
  		/* this is a layout that is not standard in Swing, the argument 
  		   "insets # # # #"  determines how much spacing is on the top,
  		   left, bottom, right from the border of the panel respectively */
  		MigLayout layout = new MigLayout("insets 8 2 4 2"); 
  		
  		this.setLayout(layout);
  		
  		//the label for the text field
  		this.add(createExternalLabelPanel());
  		
  		//the text field for the user to enter a URL
  		this.add(createLocalTextPanel());
  		
  		//the preview button
  		this.add(createPreviewButton(), "wrap");		
  	}
  
  
  
  
  	/***
  	 * @return the panel that contains the preview button
  	 */
  	private JPanel createPreviewButton() {
  		JPanel previewButtonPanel = new JPanel(new BorderLayout(0,0));
  		
  		//the action that is performed when the preview button is clicked
  		PopupPreviewAction previewAction = 
  			(PopupPreviewAction) browseWebBean.getPreviewAction(
  					false, externalUrlText);
  		
  		
 		previewAction.putValue(Action.NAME, "Preview Step");
 		
 		//sets the action to the button
 		previewButton = new JButton(previewAction);
 				
 		previewButton.setOpaque(false);
 		
 		//adds the button to the right side of the panel
 		previewButtonPanel.add(previewButton,BorderLayout.EAST);
 		
 		return previewButtonPanel;
 	}
 
 
 
 
 	/***
 	 * @return the component that contains the text label
 	 */
 	private JComponent createExternalLabelPanel() {
 		JLabel local = new JLabel("Outside Link:");
 		return local;
 	}
 
 	/*
 	 * @return the component that contains the text field the user will 
 	 * 			the URL into
 	 */
 	private JComponent createLocalTextPanel() {
 		
 		final JTextField outsideLinkUrlTextField = new JTextField(TEXT_BOX_LEN);
 		
 		if( browseWebBean.getUrl() != null ) {
 			//if the url is specified in the otml
 			String url = browseWebBean.getUrl().toString();
 			outsideLinkUrlTextField.setText(url);
 		} else {
 			//if the url is not specified or if the step is newly created
 			outsideLinkUrlTextField.setText("http://www.google.com/");
 		}
 		
 		
 		outsideLinkUrlTextField.setName("Url");
 		
 		outsideLinkUrlTextField.addFocusListener(new FocusListener() {
 			public void focusGained(FocusEvent e) {
 				// TODO Auto-generated method stub
 			}
 
 			public void focusLost(FocusEvent e) {
 				
 				//TODO: check to see if url is well formed
 				try {
 					browseWebBean.setUrl(new URL(outsideLinkUrlTextField.getText()));
 				} catch (MalformedURLException e1) {
 					//TODO popup error
 					//e1.printStackTrace();
 				}// try
 			}
 		});
 		
 		outsideLinkUrlTextField.requestFocus();
 		
 		/* initially sets the text field to not editable until user clicks 
 		   edit button */
 		outsideLinkUrlTextField.setEditable(false);
 		
 		
 		outsideLinkUrlTextField.setBackground(this.getBackground());
 		
 		TextEditorPanel panel = new TextEditorPanel(outsideLinkUrlTextField,null);
 		
 		/* sets the text field to this global variable so it can be accessed 
 		   easily later */
 		externalUrlText = outsideLinkUrlTextField;
 		return panel;
 	}
 	
 	/*
 	 * This might not be used when using the mozswing browser
 	 */
 	protected void applyUrl() {
 		if( externalUrlText.getText() != null && StringUtils.trimToNull(externalUrlText.getText()) != null ) {
 			try {
 				browseWebBean.setUrl(new URL(externalUrlText.getText()));
 			} catch (MalformedURLException e1) {
 				// TODO Auto-generated catch block
 				//e1.printStackTrace();
 			}
 		}
 	}
 
 }