tasklist.ui/src/org/netbeans/modules/tasklist/ui/TaskListTopComponent.java - netbeans - Git at Google

 /**
  * 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.netbeans.modules.tasklist.ui;

 import java.awt.BorderLayout;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.event.MouseEvent;
 import java.io.IOException;
 import java.awt.event.ItemEvent;
 import java.awt.event.ItemListener;
 import java.awt.event.MouseAdapter;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import javax.swing.JToolBar;
 import java.io.Serializable;
 import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import javax.swing.BorderFactory;
 import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.JPopupMenu;
 import javax.swing.JToggleButton;
 import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import org.netbeans.api.progress.ProgressHandle;
 import org.netbeans.api.progress.ProgressHandleFactory;
 import org.netbeans.modules.tasklist.filter.FilterRepository;
 import org.netbeans.modules.tasklist.impl.ScannerList;
 import org.netbeans.modules.tasklist.impl.ScanningScopeList;
 import org.netbeans.modules.tasklist.impl.TaskList;
 import org.netbeans.modules.tasklist.impl.TaskManagerImpl;
 import org.netbeans.spi.tasklist.Task;
 import org.netbeans.spi.tasklist.TaskScanningScope;
 import org.openide.util.Cancellable;
 import org.openide.util.HelpCtx;
 import org.openide.util.ImageUtilities;
 import org.openide.util.NbBundle;
 import org.openide.windows.TopComponent;
 import org.openide.windows.WindowManager;

 /**
  * Top component which displays something.
  */
 final class TaskListTopComponent extends TopComponent {

     private static TaskListTopComponent instance;
     /** path to the icon used by the component and its open action */
     static final String ICON_PATH = "org/netbeans/modules/tasklist/ui/resources/taskList.png"; //NOI18N

     private static final String PREFERRED_ID = "TaskListTopComponent"; //NOI18N

     private TaskManagerImpl taskManager;
     private PropertyChangeListener scopeListListener;
     private PropertyChangeListener scannerListListener;
     private TaskListModel model;
     private FilterRepository filters;
     private TaskListTable table;
     private PropertyChangeListener changeListener;
     private TaskList.Listener tasksListener;

     private static final boolean isMacLaf = "Aqua".equals(UIManager.getLookAndFeel().getID());
     private static final Color macBackground = UIManager.getColor("NbExplorerView.background");

     private TaskListTopComponent() {
         taskManager = TaskManagerImpl.getInstance();

         initComponents();
 //        statusBarPanel.setMinimumSize(new JLabel("dummy").getPreferredSize());
         setName(NbBundle.getMessage(TaskListTopComponent.class, "CTL_TaskListTopComponent")); //NOI18N
         setToolTipText(NbBundle.getMessage(TaskListTopComponent.class, "HINT_TaskListTopComponent")); //NOI18N
         setIcon(ImageUtilities.loadImage(ICON_PATH, true));

         tableScroll.addMouseListener( new MouseAdapter() {
             @Override
             public void mousePressed( MouseEvent e ) {
                 maybePopup( e );
             }

             @Override
             public void mouseReleased( MouseEvent e ) {
                 maybePopup( e );
             }
         });
         if( isMacLaf ) {
             tableScroll.setBackground(macBackground);
             tableScroll.getViewport().setBackground(macBackground);
             toolbar.setBackground(macBackground);
             statusBarPanel.setBackground(macBackground);
         }

     }

     /** This method is called from within the constructor to
      * initialize the form.
      * WARNING: Do NOT modify this code. The content of this method is
      * always regenerated by the Form Editor.
      */
     // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
     private void initComponents() {
         java.awt.GridBagConstraints gridBagConstraints;

         toolbar = new javax.swing.JToolBar();
         tableHolderPanel = new javax.swing.JPanel();
         tableScroll = new javax.swing.JScrollPane();
         toolbarSeparator = new javax.swing.JSeparator();
         statusSeparator = new javax.swing.JSeparator();
         statusBarPanel = new javax.swing.JPanel();

         setLayout(new java.awt.GridBagLayout());

         toolbar.setFloatable(false);
         toolbar.setOrientation(javax.swing.SwingConstants.VERTICAL);
         gridBagConstraints = new java.awt.GridBagConstraints();
         gridBagConstraints.gridx = 0;
         gridBagConstraints.gridy = 0;
         gridBagConstraints.gridheight = 3;
         gridBagConstraints.fill = java.awt.GridBagConstraints.VERTICAL;
         gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
         gridBagConstraints.weighty = 1.0;
         add(toolbar, gridBagConstraints);

         tableHolderPanel.setOpaque(false);

         tableScroll.setBorder(null);

         javax.swing.GroupLayout tableHolderPanelLayout = new javax.swing.GroupLayout(tableHolderPanel);
         tableHolderPanel.setLayout(tableHolderPanelLayout);
         tableHolderPanelLayout.setHorizontalGroup(
             tableHolderPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
             .addComponent(tableScroll, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 397, Short.MAX_VALUE)
         );
         tableHolderPanelLayout.setVerticalGroup(
             tableHolderPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
             .addComponent(tableScroll, javax.swing.GroupLayout.DEFAULT_SIZE, 299, Short.MAX_VALUE)
         );

         gridBagConstraints = new java.awt.GridBagConstraints();
         gridBagConstraints.gridx = 2;
         gridBagConstraints.gridy = 0;
         gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
         gridBagConstraints.weightx = 1.0;
         gridBagConstraints.weighty = 1.0;
         add(tableHolderPanel, gridBagConstraints);

         toolbarSeparator.setOrientation(javax.swing.SwingConstants.VERTICAL);
         gridBagConstraints = new java.awt.GridBagConstraints();
         gridBagConstraints.gridx = 1;
         gridBagConstraints.gridy = 0;
         gridBagConstraints.gridheight = 3;
         gridBagConstraints.fill = java.awt.GridBagConstraints.VERTICAL;
         gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
         gridBagConstraints.weighty = 1.0;
         add(toolbarSeparator, gridBagConstraints);
         gridBagConstraints = new java.awt.GridBagConstraints();
         gridBagConstraints.gridx = 2;
         gridBagConstraints.gridy = 1;
         gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
         gridBagConstraints.anchor = java.awt.GridBagConstraints.SOUTHWEST;
         gridBagConstraints.weightx = 1.0;
         add(statusSeparator, gridBagConstraints);

         statusBarPanel.setLayout(new java.awt.BorderLayout());
         gridBagConstraints = new java.awt.GridBagConstraints();
         gridBagConstraints.gridx = 2;
         gridBagConstraints.gridy = 2;
         gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
         gridBagConstraints.anchor = java.awt.GridBagConstraints.SOUTHEAST;
         gridBagConstraints.weightx = 1.0;
         add(statusBarPanel, gridBagConstraints);
     }// </editor-fold>//GEN-END:initComponents


     // Variables declaration - do not modify//GEN-BEGIN:variables
     private javax.swing.JPanel statusBarPanel;
     private javax.swing.JSeparator statusSeparator;
     private javax.swing.JPanel tableHolderPanel;
     private javax.swing.JScrollPane tableScroll;
     private javax.swing.JToolBar toolbar;
     private javax.swing.JSeparator toolbarSeparator;
     // End of variables declaration//GEN-END:variables

     /**
      * Gets default instance. Do not use directly: reserved for *.settings files only,
      * i.e. deserialization routines; otherwise you could get a non-deserialized instance.
      * To obtain the singleton instance, use {@link findInstance}.
      */
     public static synchronized TaskListTopComponent getDefault() {
         if (instance == null) {
             instance = new TaskListTopComponent();
         }
         return instance;
     }

     /**
      * Obtain the TaskListTopComponent instance. Never call {@link #getDefault} directly!
      */
     public static synchronized TaskListTopComponent findInstance() {
         TopComponent win = WindowManager.getDefault().findTopComponent(PREFERRED_ID);
         if (win == null) {
             getLogger().log( Level.INFO, "Cannot find TaskList component. It will not be located properly in the window system." ); //NOI18N
             return getDefault();
         }
         if (win instanceof TaskListTopComponent) {
             return (TaskListTopComponent)win;
         }
         getLogger().log( Level.INFO,
                 "There seem to be multiple components with the '" + PREFERRED_ID + //NOI18N
                 "' ID. That is a potential source of errors and unexpected behavior."); //NOI18N
         return getDefault();
     }

     @Override
     public int getPersistenceType() {
         return TopComponent.PERSISTENCE_ALWAYS;
     }

     @Override
     public void componentOpened() {
         if( null == model ) {
             toolbarSeparator.setVisible(false);
             statusSeparator.setVisible(false);
             tableScroll.setViewportView( createNoTasksMessage() );
         }

         WindowManager.getDefault().invokeWhenUIReady(new Runnable() {
             @Override
             public void run() {
                 TaskManagerImpl.RP.post(new Runnable() {
                     @Override
                     public void run() {
                         init();
                     }
                 });
             }
         });
     }

     private void init() {
         TaskScanningScope activeScope = getActiveScope();
         if( null == filters ) {
             try {
                 filters = FilterRepository.getDefault();
                 filters.load();
             } catch( IOException ioE ) {
                 getLogger().log( Level.INFO, ioE.getMessage(), ioE );
             }
         }

         if( null == changeListener ) {
             changeListener = createChangeListener();
             taskManager.addPropertyChangeListener( TaskManagerImpl.PROP_WORKING_STATUS, changeListener );
         }

         if( null == model ) {
             table = new TaskListTable();
             if( isMacLaf )
                 table.setBackground(macBackground);
             //later on the button in the toolbar will switch to the previously used table model
             model = new TaskListModel( taskManager.getTasks() );
             table.setModel( model );
             tasksListener = new TaskList.Listener() {
                 @Override
                 public void tasksAdded( List<? extends Task> tasks ) {
                     Runnable runnable = new Runnable() {
                         @Override
                         public void run() {
                             tableScroll.setViewportView( table );
                             Color background = UIManager.getColor("TextArea.background"); //NOI18N
                             if( null != background )
                                 tableScroll.getViewport().setBackground( background );
                             tableScroll.setBorder( BorderFactory.createEmptyBorder() );
                             if( isMacLaf ) {
                                 table.setBackground(macBackground);
                                 tableScroll.getViewport().setBackground(macBackground);
                             }
                         }
                     };
                     taskManager.getTasks().removeListener(tasksListener);
                     if( SwingUtilities.isEventDispatchThread() ) {
                         runnable.run();
                     } else {
                         SwingUtilities.invokeLater(runnable);
                     }
                     tasksListener = null;
                 }

                 @Override
                 public void tasksRemoved(List<? extends Task> tasks) {
                 }

                 @Override
                 public void cleared() {
                 }
             };
             taskManager.getTasks().addListener(tasksListener);
             SwingUtilities.invokeLater(new Runnable() {

                 @Override
                 public void run() {
                     tableScroll.setViewportView( createNoTasksMessage() );
                     tableScroll.setBorder( BorderFactory.createEmptyBorder() );

                     statusBarPanel.add( new CountStatusBar(taskManager.getTasks()), BorderLayout.WEST );
                     statusBarPanel.add( new ScopeStatusBar(taskManager), BorderLayout.CENTER );

                     toolbarSeparator.setVisible(true);
                     statusSeparator.setVisible(true);
                     rebuildToolbar();
                 }
             });
         }
         SwingUtilities.invokeLater( new Runnable() {
             @Override
             public void run() {
                 ScanningScopeList.getDefault().addPropertyChangeListener( getScopeListListener() );
                 ScannerList.getFileScannerList().addPropertyChangeListener( getScannerListListener() );
                 ScannerList.getPushScannerList().addPropertyChangeListener( getScannerListListener() );
             }
         });

         final TaskScanningScope scopeToObserve = activeScope;
         taskManager.observe( scopeToObserve, filters.getActive() );
     }

     private Component createNoTasksMessage() {
         JPanel panel = new JPanel( new BorderLayout() );
         if( isMacLaf ) {
             panel.setBackground(macBackground);
         } else {
             Color background = UIManager.getColor("TextArea.background"); //NOI18N
             if( null != background )
                 panel.setBackground( background );
         }
         JLabel msg = new JLabel( NbBundle.getMessage(TaskListTopComponent.class, "LBL_NoTasks" ) ); //NOI18N
         msg.setHorizontalAlignment(JLabel.CENTER);
         msg.setEnabled(false);
         msg.setOpaque(false);
         panel.add( msg, BorderLayout.CENTER );
         return panel;
     }

     @Override
     public void componentClosed() {
         ScanningScopeList.getDefault().removePropertyChangeListener( getScopeListListener() );
         ScannerList.getFileScannerList().removePropertyChangeListener( getScannerListListener() );
         ScannerList.getPushScannerList().removePropertyChangeListener( getScannerListListener() );
         taskManager.observe( null, null );
         if( null != changeListener ) {
             taskManager.removePropertyChangeListener( TaskManagerImpl.PROP_WORKING_STATUS, changeListener );
             changeListener = null;
         }
         synchronized( this ) {
             if( null != progress )
                 progress.finish();
             progress = null;
         }
         try {
             FilterRepository.getDefault().save();
         } catch( IOException ioE ) {
             getLogger().log( Level.INFO, null, ioE );
         }
     }

     @Override
     public void requestActive() {
         super.requestActive();
         if( null != table )
             table.requestFocusInWindow();
     }

     @Override
     public Object writeReplace() {
         return new ResolvableHelper();
     }

     @Override
     protected String preferredID() {
         return PREFERRED_ID;
     }

     private void maybePopup( MouseEvent e ) {
         if( e.isPopupTrigger() && null != table ) {
             e.consume();
             JPopupMenu popup = Util.createPopup( table );
             popup.show( this, e.getX(), e.getY() );
         }
     }

     private PropertyChangeListener getScopeListListener() {
         if( null == scopeListListener ) {
             scopeListListener = new PropertyChangeListener() {
                 @Override
                 public void propertyChange(PropertyChangeEvent arg0) {
                     ScanningScopeList scopeList = ScanningScopeList.getDefault();
                     List<TaskScanningScope> newScopes = scopeList.getTaskScanningScopes();
                     if( newScopes.isEmpty() ) {
                         getLogger().log( Level.INFO, "No task scanning scope found" ); //NOI18N
                     }
                     SwingUtilities.invokeLater(new Runnable() {
                         @Override
                         public void run() {
                             rebuildToolbar();
                         }
                     });
                 }
             };
         }
         return scopeListListener;
     }

     private PropertyChangeListener getScannerListListener() {
         if( null == scannerListListener ) {
             scannerListListener = new PropertyChangeListener() {
                 @Override
                 public void propertyChange(PropertyChangeEvent e) {
                     final TaskScanningScope scopeToObserve = taskManager.getScope();
                     taskManager.observe( null, null );
                     SwingUtilities.invokeLater( new Runnable() {
                         @Override
                         public void run() {
                             taskManager.observe( scopeToObserve, filters.getActive() );
                         }
                     });
                 }
             };
         }
         return scannerListListener;
     }

     private void rebuildToolbar() {
         toolbar.removeAll();
         toolbar.setFocusable( false );
         //scope buttons
         List<TaskScanningScope> scopes = ScanningScopeList.getDefault().getTaskScanningScopes();
         for( TaskScanningScope scope : scopes ) {
             final ScopeButton scopeButton = new ScopeButton( taskManager, scope );
             scopeButton.setSelected(scope.equals(Settings.getDefault().getActiveScanningScope()));
             toolbar.add(scopeButton);
         }
         toolbar.add( new JToolBar.Separator() );
         //filter
         JToggleButton toggleFilter = new FiltersMenuButton( filters.getActive() );
         toolbar.add( toggleFilter );
         //grouping & other butons
         toolbar.addSeparator();
         final JToggleButton toggleGroups = new JToggleButton( ImageUtilities.loadImageIcon("org/netbeans/modules/tasklist/ui/resources/groups.png", false)); //NOI18N
         toggleGroups.addItemListener( new ItemListener() {
             @Override
             public void itemStateChanged(ItemEvent e) {
                 switchTableModel( e.getStateChange() == ItemEvent.SELECTED );
                 Settings.getDefault().setGroupTasksByCategory( toggleGroups.isSelected() );
                 toggleGroups.setToolTipText( toggleGroups.isSelected()
                         ? NbBundle.getMessage( TaskListTopComponent.class, "HINT_TasksAsList" )  //NOI18N
                         : NbBundle.getMessage( TaskListTopComponent.class, "HINT_GrouppedTasks" ) ); //NOI18N
             }
         });
         toggleGroups.setSelected( Settings.getDefault().getGroupTasksByCategory() );
         toggleGroups.setToolTipText( toggleGroups.isSelected()
                         ? NbBundle.getMessage( TaskListTopComponent.class, "HINT_TasksAsList" )  //NOI18N
                         : NbBundle.getMessage( TaskListTopComponent.class, "HINT_GrouppedTasks" ) ); //NOI18N
         toggleGroups.setFocusable( false );
         toolbar.add( toggleGroups );
     }

     private void switchTableModel( boolean useFoldingModel ) {
         if( useFoldingModel ) {
             model = new FoldingTaskListModel( taskManager.getTasks() );
             table.setModel( model );
             statusBarPanel.removeAll();
         } else {
             model = new TaskListModel( taskManager.getTasks() );
             table.setModel( model );
             statusBarPanel.add( new CountStatusBar(taskManager.getTasks()), BorderLayout.WEST );
             statusBarPanel.add( new ScopeStatusBar(taskManager), BorderLayout.CENTER );
         }
         statusBarPanel.setVisible( !useFoldingModel );
         statusSeparator.setVisible( !useFoldingModel );
     }

     static private Logger getLogger() {
         return Logger.getLogger( TaskListTopComponent.class.getName() );
     }

     private ProgressHandle progress;
     private PropertyChangeListener createChangeListener() {
         return new PropertyChangeListener() {
             @Override
             public void propertyChange( PropertyChangeEvent e ) {
                 synchronized( TaskListTopComponent.this ) {
                     if( ((Boolean)e.getNewValue()).booleanValue() ) {
                         if( null == progress ) {
                             progress = ProgressHandleFactory.createHandle(
                                     NbBundle.getMessage( TaskListTopComponent.class, "LBL_ScanProgress" ), //NOI18N
                                     new Cancellable() { //NOI18N
                                         @Override
                                         public boolean cancel() {
                                             taskManager.abort();
                                             return true;
                                         }
                                     });
                             progress.start();
                             progress.switchToIndeterminate();
                         }
                     } else {
                         if( null != progress )
                             progress.finish();
                         progress = null;
                     }
                 }
             }
         };
     }

     final static class ResolvableHelper implements Serializable {
         private static final long serialVersionUID = 1L;
         public Object readResolve() {
             return TaskListTopComponent.getDefault();
         }
     }

    /** Defines task list Help ID */
     @Override
     public HelpCtx getHelpCtx () {
         return new HelpCtx(TaskListTopComponent.class);
     }

     private TaskScanningScope getActiveScope() {
         TaskScanningScope activeScope = Settings.getDefault().getActiveScanningScope();
         if( null == activeScope )
             activeScope = ScanningScopeList.getDefault().getDefaultScope();
         return activeScope;
     }
 }
	/**
	* 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.netbeans.modules.tasklist.ui;

	import java.awt.BorderLayout;
	import java.awt.Color;
	import java.awt.Component;
	import java.awt.event.MouseEvent;
	import java.io.IOException;
	import java.awt.event.ItemEvent;
	import java.awt.event.ItemListener;
	import java.awt.event.MouseAdapter;
	import java.beans.PropertyChangeEvent;
	import java.beans.PropertyChangeListener;
	import javax.swing.JToolBar;
	import java.io.Serializable;
	import java.util.List;
	import java.util.logging.Level;
	import java.util.logging.Logger;
	import javax.swing.BorderFactory;
	import javax.swing.JLabel;
	import javax.swing.JPanel;
	import javax.swing.JPopupMenu;
	import javax.swing.JToggleButton;
	import javax.swing.SwingUtilities;
	import javax.swing.UIManager;
	import org.netbeans.api.progress.ProgressHandle;
	import org.netbeans.api.progress.ProgressHandleFactory;
	import org.netbeans.modules.tasklist.filter.FilterRepository;
	import org.netbeans.modules.tasklist.impl.ScannerList;
	import org.netbeans.modules.tasklist.impl.ScanningScopeList;
	import org.netbeans.modules.tasklist.impl.TaskList;
	import org.netbeans.modules.tasklist.impl.TaskManagerImpl;
	import org.netbeans.spi.tasklist.Task;
	import org.netbeans.spi.tasklist.TaskScanningScope;
	import org.openide.util.Cancellable;
	import org.openide.util.HelpCtx;
	import org.openide.util.ImageUtilities;
	import org.openide.util.NbBundle;
	import org.openide.windows.TopComponent;
	import org.openide.windows.WindowManager;

	/**
	* Top component which displays something.
	*/
	final class TaskListTopComponent extends TopComponent {

	private static TaskListTopComponent instance;
	/** path to the icon used by the component and its open action */
	static final String ICON_PATH = "org/netbeans/modules/tasklist/ui/resources/taskList.png"; //NOI18N

	private static final String PREFERRED_ID = "TaskListTopComponent"; //NOI18N

	private TaskManagerImpl taskManager;
	private PropertyChangeListener scopeListListener;
	private PropertyChangeListener scannerListListener;
	private TaskListModel model;
	private FilterRepository filters;
	private TaskListTable table;
	private PropertyChangeListener changeListener;
	private TaskList.Listener tasksListener;

	private static final boolean isMacLaf = "Aqua".equals(UIManager.getLookAndFeel().getID());
	private static final Color macBackground = UIManager.getColor("NbExplorerView.background");

	private TaskListTopComponent() {
	taskManager = TaskManagerImpl.getInstance();

	initComponents();
	// statusBarPanel.setMinimumSize(new JLabel("dummy").getPreferredSize());
	setName(NbBundle.getMessage(TaskListTopComponent.class, "CTL_TaskListTopComponent")); //NOI18N
	setToolTipText(NbBundle.getMessage(TaskListTopComponent.class, "HINT_TaskListTopComponent")); //NOI18N
	setIcon(ImageUtilities.loadImage(ICON_PATH, true));

	tableScroll.addMouseListener( new MouseAdapter() {
	@Override
	public void mousePressed( MouseEvent e ) {
	maybePopup( e );
	}

	@Override
	public void mouseReleased( MouseEvent e ) {
	maybePopup( e );
	}
	});
	if( isMacLaf ) {
	tableScroll.setBackground(macBackground);
	tableScroll.getViewport().setBackground(macBackground);
	toolbar.setBackground(macBackground);
	statusBarPanel.setBackground(macBackground);
	}

	}

	/** This method is called from within the constructor to
	* initialize the form.
	* WARNING: Do NOT modify this code. The content of this method is
	* always regenerated by the Form Editor.
	*/
	// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
	private void initComponents() {
	java.awt.GridBagConstraints gridBagConstraints;

	toolbar = new javax.swing.JToolBar();
	tableHolderPanel = new javax.swing.JPanel();
	tableScroll = new javax.swing.JScrollPane();
	toolbarSeparator = new javax.swing.JSeparator();
	statusSeparator = new javax.swing.JSeparator();
	statusBarPanel = new javax.swing.JPanel();

	setLayout(new java.awt.GridBagLayout());

	toolbar.setFloatable(false);
	toolbar.setOrientation(javax.swing.SwingConstants.VERTICAL);
	gridBagConstraints = new java.awt.GridBagConstraints();
	gridBagConstraints.gridx = 0;
	gridBagConstraints.gridy = 0;
	gridBagConstraints.gridheight = 3;
	gridBagConstraints.fill = java.awt.GridBagConstraints.VERTICAL;
	gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
	gridBagConstraints.weighty = 1.0;
	add(toolbar, gridBagConstraints);

	tableHolderPanel.setOpaque(false);

	tableScroll.setBorder(null);

	javax.swing.GroupLayout tableHolderPanelLayout = new javax.swing.GroupLayout(tableHolderPanel);
	tableHolderPanel.setLayout(tableHolderPanelLayout);
	tableHolderPanelLayout.setHorizontalGroup(
	tableHolderPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
	.addComponent(tableScroll, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 397, Short.MAX_VALUE)
	);
	tableHolderPanelLayout.setVerticalGroup(
	tableHolderPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
	.addComponent(tableScroll, javax.swing.GroupLayout.DEFAULT_SIZE, 299, Short.MAX_VALUE)
	);

	gridBagConstraints = new java.awt.GridBagConstraints();
	gridBagConstraints.gridx = 2;
	gridBagConstraints.gridy = 0;
	gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
	gridBagConstraints.weightx = 1.0;
	gridBagConstraints.weighty = 1.0;
	add(tableHolderPanel, gridBagConstraints);

	toolbarSeparator.setOrientation(javax.swing.SwingConstants.VERTICAL);
	gridBagConstraints = new java.awt.GridBagConstraints();
	gridBagConstraints.gridx = 1;
	gridBagConstraints.gridy = 0;
	gridBagConstraints.gridheight = 3;
	gridBagConstraints.fill = java.awt.GridBagConstraints.VERTICAL;
	gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
	gridBagConstraints.weighty = 1.0;
	add(toolbarSeparator, gridBagConstraints);
	gridBagConstraints = new java.awt.GridBagConstraints();
	gridBagConstraints.gridx = 2;
	gridBagConstraints.gridy = 1;
	gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
	gridBagConstraints.anchor = java.awt.GridBagConstraints.SOUTHWEST;
	gridBagConstraints.weightx = 1.0;
	add(statusSeparator, gridBagConstraints);

	statusBarPanel.setLayout(new java.awt.BorderLayout());
	gridBagConstraints = new java.awt.GridBagConstraints();
	gridBagConstraints.gridx = 2;
	gridBagConstraints.gridy = 2;
	gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
	gridBagConstraints.anchor = java.awt.GridBagConstraints.SOUTHEAST;
	gridBagConstraints.weightx = 1.0;
	add(statusBarPanel, gridBagConstraints);
	}// </editor-fold>//GEN-END:initComponents


	// Variables declaration - do not modify//GEN-BEGIN:variables
	private javax.swing.JPanel statusBarPanel;
	private javax.swing.JSeparator statusSeparator;
	private javax.swing.JPanel tableHolderPanel;
	private javax.swing.JScrollPane tableScroll;
	private javax.swing.JToolBar toolbar;
	private javax.swing.JSeparator toolbarSeparator;
	// End of variables declaration//GEN-END:variables

	/**
	* Gets default instance. Do not use directly: reserved for *.settings files only,
	* i.e. deserialization routines; otherwise you could get a non-deserialized instance.
	* To obtain the singleton instance, use {@link findInstance}.
	*/
	public static synchronized TaskListTopComponent getDefault() {
	if (instance == null) {
	instance = new TaskListTopComponent();
	}
	return instance;
	}

	/**
	* Obtain the TaskListTopComponent instance. Never call {@link #getDefault} directly!
	*/
	public static synchronized TaskListTopComponent findInstance() {
	TopComponent win = WindowManager.getDefault().findTopComponent(PREFERRED_ID);
	if (win == null) {
	getLogger().log( Level.INFO, "Cannot find TaskList component. It will not be located properly in the window system." ); //NOI18N
	return getDefault();
	}
	if (win instanceof TaskListTopComponent) {
	return (TaskListTopComponent)win;
	}
	getLogger().log( Level.INFO,
	"There seem to be multiple components with the '" + PREFERRED_ID + //NOI18N
	"' ID. That is a potential source of errors and unexpected behavior."); //NOI18N
	return getDefault();
	}

	@Override
	public int getPersistenceType() {
	return TopComponent.PERSISTENCE_ALWAYS;
	}

	@Override
	public void componentOpened() {
	if( null == model ) {
	toolbarSeparator.setVisible(false);
	statusSeparator.setVisible(false);
	tableScroll.setViewportView( createNoTasksMessage() );
	}

	WindowManager.getDefault().invokeWhenUIReady(new Runnable() {
	@Override
	public void run() {
	TaskManagerImpl.RP.post(new Runnable() {
	@Override
	public void run() {
	init();
	}
	});
	}
	});
	}

	private void init() {
	TaskScanningScope activeScope = getActiveScope();
	if( null == filters ) {
	try {
	filters = FilterRepository.getDefault();
	filters.load();
	} catch( IOException ioE ) {
	getLogger().log( Level.INFO, ioE.getMessage(), ioE );
	}
	}

	if( null == changeListener ) {
	changeListener = createChangeListener();
	taskManager.addPropertyChangeListener( TaskManagerImpl.PROP_WORKING_STATUS, changeListener );
	}

	if( null == model ) {
	table = new TaskListTable();
	if( isMacLaf )
	table.setBackground(macBackground);
	//later on the button in the toolbar will switch to the previously used table model
	model = new TaskListModel( taskManager.getTasks() );
	table.setModel( model );
	tasksListener = new TaskList.Listener() {
	@Override
	public void tasksAdded( List<? extends Task> tasks ) {
	Runnable runnable = new Runnable() {
	@Override
	public void run() {
	tableScroll.setViewportView( table );
	Color background = UIManager.getColor("TextArea.background"); //NOI18N
	if( null != background )
	tableScroll.getViewport().setBackground( background );
	tableScroll.setBorder( BorderFactory.createEmptyBorder() );
	if( isMacLaf ) {
	table.setBackground(macBackground);
	tableScroll.getViewport().setBackground(macBackground);
	}
	}
	};
	taskManager.getTasks().removeListener(tasksListener);
	if( SwingUtilities.isEventDispatchThread() ) {
	runnable.run();
	} else {
	SwingUtilities.invokeLater(runnable);
	}
	tasksListener = null;
	}

	@Override
	public void tasksRemoved(List<? extends Task> tasks) {
	}

	@Override
	public void cleared() {
	}
	};
	taskManager.getTasks().addListener(tasksListener);
	SwingUtilities.invokeLater(new Runnable() {

	@Override
	public void run() {
	tableScroll.setViewportView( createNoTasksMessage() );
	tableScroll.setBorder( BorderFactory.createEmptyBorder() );

	statusBarPanel.add( new CountStatusBar(taskManager.getTasks()), BorderLayout.WEST );
	statusBarPanel.add( new ScopeStatusBar(taskManager), BorderLayout.CENTER );

	toolbarSeparator.setVisible(true);
	statusSeparator.setVisible(true);
	rebuildToolbar();
	}
	});
	}
	SwingUtilities.invokeLater( new Runnable() {
	@Override
	public void run() {
	ScanningScopeList.getDefault().addPropertyChangeListener( getScopeListListener() );
	ScannerList.getFileScannerList().addPropertyChangeListener( getScannerListListener() );
	ScannerList.getPushScannerList().addPropertyChangeListener( getScannerListListener() );
	}
	});

	final TaskScanningScope scopeToObserve = activeScope;
	taskManager.observe( scopeToObserve, filters.getActive() );
	}

	private Component createNoTasksMessage() {
	JPanel panel = new JPanel( new BorderLayout() );
	if( isMacLaf ) {
	panel.setBackground(macBackground);
	} else {
	Color background = UIManager.getColor("TextArea.background"); //NOI18N
	if( null != background )
	panel.setBackground( background );
	}
	JLabel msg = new JLabel( NbBundle.getMessage(TaskListTopComponent.class, "LBL_NoTasks" ) ); //NOI18N
	msg.setHorizontalAlignment(JLabel.CENTER);
	msg.setEnabled(false);
	msg.setOpaque(false);
	panel.add( msg, BorderLayout.CENTER );
	return panel;
	}

	@Override
	public void componentClosed() {
	ScanningScopeList.getDefault().removePropertyChangeListener( getScopeListListener() );
	ScannerList.getFileScannerList().removePropertyChangeListener( getScannerListListener() );
	ScannerList.getPushScannerList().removePropertyChangeListener( getScannerListListener() );
	taskManager.observe( null, null );
	if( null != changeListener ) {
	taskManager.removePropertyChangeListener( TaskManagerImpl.PROP_WORKING_STATUS, changeListener );
	changeListener = null;
	}
	synchronized( this ) {
	if( null != progress )
	progress.finish();
	progress = null;
	}
	try {
	FilterRepository.getDefault().save();
	} catch( IOException ioE ) {
	getLogger().log( Level.INFO, null, ioE );
	}
	}

	@Override
	public void requestActive() {
	super.requestActive();
	if( null != table )
	table.requestFocusInWindow();
	}

	@Override
	public Object writeReplace() {
	return new ResolvableHelper();
	}

	@Override
	protected String preferredID() {
	return PREFERRED_ID;
	}

	private void maybePopup( MouseEvent e ) {
	if( e.isPopupTrigger() && null != table ) {
	e.consume();
	JPopupMenu popup = Util.createPopup( table );
	popup.show( this, e.getX(), e.getY() );
	}
	}

	private PropertyChangeListener getScopeListListener() {
	if( null == scopeListListener ) {
	scopeListListener = new PropertyChangeListener() {
	@Override
	public void propertyChange(PropertyChangeEvent arg0) {
	ScanningScopeList scopeList = ScanningScopeList.getDefault();
	List<TaskScanningScope> newScopes = scopeList.getTaskScanningScopes();
	if( newScopes.isEmpty() ) {
	getLogger().log( Level.INFO, "No task scanning scope found" ); //NOI18N
	}
	SwingUtilities.invokeLater(new Runnable() {
	@Override
	public void run() {
	rebuildToolbar();
	}
	});
	}
	};
	}
	return scopeListListener;
	}

	private PropertyChangeListener getScannerListListener() {
	if( null == scannerListListener ) {
	scannerListListener = new PropertyChangeListener() {
	@Override
	public void propertyChange(PropertyChangeEvent e) {
	final TaskScanningScope scopeToObserve = taskManager.getScope();
	taskManager.observe( null, null );
	SwingUtilities.invokeLater( new Runnable() {
	@Override
	public void run() {
	taskManager.observe( scopeToObserve, filters.getActive() );
	}
	});
	}
	};
	}
	return scannerListListener;
	}

	private void rebuildToolbar() {
	toolbar.removeAll();
	toolbar.setFocusable( false );
	//scope buttons
	List<TaskScanningScope> scopes = ScanningScopeList.getDefault().getTaskScanningScopes();
	for( TaskScanningScope scope : scopes ) {
	final ScopeButton scopeButton = new ScopeButton( taskManager, scope );
	scopeButton.setSelected(scope.equals(Settings.getDefault().getActiveScanningScope()));
	toolbar.add(scopeButton);
	}
	toolbar.add( new JToolBar.Separator() );
	//filter
	JToggleButton toggleFilter = new FiltersMenuButton( filters.getActive() );
	toolbar.add( toggleFilter );
	//grouping & other butons
	toolbar.addSeparator();
	final JToggleButton toggleGroups = new JToggleButton( ImageUtilities.loadImageIcon("org/netbeans/modules/tasklist/ui/resources/groups.png", false)); //NOI18N
	toggleGroups.addItemListener( new ItemListener() {
	@Override
	public void itemStateChanged(ItemEvent e) {
	switchTableModel( e.getStateChange() == ItemEvent.SELECTED );
	Settings.getDefault().setGroupTasksByCategory( toggleGroups.isSelected() );
	toggleGroups.setToolTipText( toggleGroups.isSelected()
	? NbBundle.getMessage( TaskListTopComponent.class, "HINT_TasksAsList" ) //NOI18N
	: NbBundle.getMessage( TaskListTopComponent.class, "HINT_GrouppedTasks" ) ); //NOI18N
	}
	});
	toggleGroups.setSelected( Settings.getDefault().getGroupTasksByCategory() );
	toggleGroups.setToolTipText( toggleGroups.isSelected()
	? NbBundle.getMessage( TaskListTopComponent.class, "HINT_TasksAsList" ) //NOI18N
	: NbBundle.getMessage( TaskListTopComponent.class, "HINT_GrouppedTasks" ) ); //NOI18N
	toggleGroups.setFocusable( false );
	toolbar.add( toggleGroups );
	}

	private void switchTableModel( boolean useFoldingModel ) {
	if( useFoldingModel ) {
	model = new FoldingTaskListModel( taskManager.getTasks() );
	table.setModel( model );
	statusBarPanel.removeAll();
	} else {
	model = new TaskListModel( taskManager.getTasks() );
	table.setModel( model );
	statusBarPanel.add( new CountStatusBar(taskManager.getTasks()), BorderLayout.WEST );
	statusBarPanel.add( new ScopeStatusBar(taskManager), BorderLayout.CENTER );
	}
	statusBarPanel.setVisible( !useFoldingModel );
	statusSeparator.setVisible( !useFoldingModel );
	}

	static private Logger getLogger() {
	return Logger.getLogger( TaskListTopComponent.class.getName() );
	}

	private ProgressHandle progress;
	private PropertyChangeListener createChangeListener() {
	return new PropertyChangeListener() {
	@Override
	public void propertyChange( PropertyChangeEvent e ) {
	synchronized( TaskListTopComponent.this ) {
	if( ((Boolean)e.getNewValue()).booleanValue() ) {
	if( null == progress ) {
	progress = ProgressHandleFactory.createHandle(
	NbBundle.getMessage( TaskListTopComponent.class, "LBL_ScanProgress" ), //NOI18N
	new Cancellable() { //NOI18N
	@Override
	public boolean cancel() {
	taskManager.abort();
	return true;
	}
	});
	progress.start();
	progress.switchToIndeterminate();
	}
	} else {
	if( null != progress )
	progress.finish();
	progress = null;
	}
	}
	}
	};
	}

	final static class ResolvableHelper implements Serializable {
	private static final long serialVersionUID = 1L;
	public Object readResolve() {
	return TaskListTopComponent.getDefault();
	}
	}

	/** Defines task list Help ID */
	@Override
	public HelpCtx getHelpCtx () {
	return new HelpCtx(TaskListTopComponent.class);
	}

	private TaskScanningScope getActiveScope() {
	TaskScanningScope activeScope = Settings.getDefault().getActiveScanningScope();
	if( null == activeScope )
	activeScope = ScanningScopeList.getDefault().getDefaultScope();
	return activeScope;
	}
	}