/*
    * 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.chemistry.opencmis.workbench;
  
  import java.awt.BorderLayout;
  import java.awt.Cursor;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  import java.awt.event.KeyEvent;
  import java.awt.event.KeyListener;
  
  import javax.swing.BorderFactory;
  import javax.swing.BoxLayout;
  import javax.swing.JButton;
  import javax.swing.JPanel;
  import javax.swing.JScrollPane;
  import javax.swing.JTextField;
  
  import org.apache.chemistry.opencmis.client.api.Folder;
  import org.apache.chemistry.opencmis.client.api.ObjectId;
  import org.apache.chemistry.opencmis.workbench.model.ClientModel;
  import org.apache.chemistry.opencmis.workbench.model.ClientModelEvent;
  import org.apache.chemistry.opencmis.workbench.model.FolderListener;
  import org.apache.chemistry.opencmis.workbench.model.ObjectListener;
  
  public class FolderPanel extends JPanel implements FolderListener, ObjectListener {
  
      private static final long serialVersionUID = 1L;
  
      private final ClientModel model;
  
      private String parentId;
  
      private JButton upButton;
      private JTextField pathField;
      private JButton goButton;
      private FolderTable folderTable;
  
      public FolderPanel(ClientModel model) {
          super();
  
          this.model = model;
          model.addFolderListener(this);
          model.addObjectListener(this);
          createGUI();
      }
  
      public void folderLoaded(ClientModelEvent event) {
          Folder currentFolder = event.getClientModel().getCurrentFolder();
  
          if (currentFolder != null) {
              String path = currentFolder.getPath();
              pathField.setText(path);
  
              Folder parent = currentFolder.getFolderParent();
              if (parent == null) {
                  parentId = null;
                  upButton.setEnabled(false);
              } else {
                  parentId = parent.getId();
                  upButton.setEnabled(true);
              }
          } else {
              pathField.setText("???");
              parentId = null;
              upButton.setEnabled(false);
          }
      }
  
      public void objectLoaded(ClientModelEvent event) {
          if ((folderTable.getSelectedRow() > -1) && (event.getClientModel().getCurrentObject() != null)) {
              String selId = folderTable.getValueAt(folderTable.getSelectedRow(), FolderTable.ID_COLUMN).toString();
              String curId = event.getClientModel().getCurrentObject().getId();
  
              if (!curId.equals(selId)) {
                  folderTable.clearSelection();
              }
          }
      }
  
      private void createGUI() {
          setLayout(new BorderLayout());
  
         JPanel panel = new JPanel();
         panel.setLayout(new BoxLayout(panel, BoxLayout.LINE_AXIS));
         panel.setBorder(BorderFactory.createEmptyBorder(1, 0, 1, 0));
 
         upButton = new JButton("up");
         upButton.setEnabled(false);
         upButton.addActionListener(new ActionListener() {
             public void actionPerformed(ActionEvent e) {
                 try {
                     setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
                     ObjectId objectId = model.loadFolder(parentId, false);
                     model.loadObject(objectId.getId());
                 } catch (Exception ex) {
                     ClientHelper.showError(null, ex);
                     return;
                 } finally {
                     setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
                 }
             }
         });
         panel.add(upButton);
 
         pathField = new JTextField("");
         pathField.addKeyListener(new KeyListener() {
             public void keyTyped(KeyEvent e) {
             }
 
             public void keyReleased(KeyEvent e) {
                 if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                     loadFolder();
                 }
             }
 
             public void keyPressed(KeyEvent e) {
             }
         });
         panel.add(pathField);
 
         goButton = new JButton("go");
         goButton.addActionListener(new ActionListener() {
             public void actionPerformed(ActionEvent e) {
                 loadFolder();
             }
         });
         panel.add(goButton);
 
         add(panel, BorderLayout.PAGE_START);
 
         folderTable = new FolderTable(model);
         folderTable.setFillsViewportHeight(true);
         model.addFolderListener(folderTable);
 
         add(new JScrollPane(folderTable), BorderLayout.CENTER);
     }
 
     private void loadFolder() {
         try {
             setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
             String id = pathField.getText().trim();
             if (id.length() == 0) {
                 id = "/";
             }
             ObjectId objectId = model.loadFolder(id, id.startsWith("/"));
             model.loadObject(objectId.getId());
         } catch (Exception ex) {
             ClientHelper.showError(null, ex);
             return;
         } finally {
             setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
         }
     }
 }