alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

What this is

This file is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Other links

The source code

/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2003 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.core.windows.actions;


import org.netbeans.core.windows.Constants;
import org.netbeans.core.windows.ModeImpl;
import org.netbeans.core.windows.WindowManagerImpl;
import org.openide.awt.JMenuPlus;
import org.openide.util.NbBundle;
import org.openide.util.WeakListeners;
import org.openide.util.actions.Presenter;
import org.openide.windows.TopComponent;
import org.openide.windows.WindowManager;

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.Iterator;
import java.util.Set;


/**
 * Action which allows to change layout of windows.
 *
 * @author   Peter Zavadsky
 */
public class AttachWindowAction extends AbstractAction 
implements Presenter.Menu {


    // For this class only.
    private static final String PROP_ACTION_CHANGED = "actionChanged"; // NOI18N
   
    private final PropertyChangeListener propListener;
    
    
    public AttachWindowAction() {
        propListener = new PropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent evt) {
                String propName = evt.getPropertyName();
                if(TopComponent.Registry.PROP_ACTIVATED.equals(propName)
                 || WindowManager.PROP_MODES.equals(propName)
                 || WindowManagerImpl.PROP_EDITOR_AREA_STATE.equals(propName)) {
                    updateState();
                }
            }
        };
        TopComponent.Registry registry = TopComponent.getRegistry();
        registry.addPropertyChangeListener(WeakListeners.propertyChange(propListener, registry));
        
        WindowManagerImpl.getInstance().addPropertyChangeListener(
            WeakListeners.propertyChange(propListener, WindowManagerImpl.getInstance()));
        
        updateState();
    }
    
    public void actionPerformed(ActionEvent evt) {}
    
    private void updateState() {
        TopComponent active = TopComponent.getRegistry().getActivated();
        Object param = active == null ? "" : active.getName(); // NOI18N
        putValue(Action.NAME, NbBundle.getMessage(MaximizeWindowAction.class, "CTL_AttachWindowAction", param));

        // XXX In separated state, the action should be present,
        // when achieved that, remove this kind of code.
        if(WindowManagerImpl.getInstance().getEditorAreaState() == Constants.EDITOR_AREA_SEPARATED) {
            setEnabled(false);
        } else {
            setEnabled(active != null);
        }

        // So the presenter knows when to update itself.
        firePropertyChange(PROP_ACTION_CHANGED, null, null);
    }


    /** Implements Presenter.Menu. */
    public JMenuItem getMenuPresenter() {
        JMenuItem mi = new LazyPopup(this);
        org.openide.awt.Actions.connect(mi, this, false);
        return mi;
    }
    
    
    /** Menu item which will create its items lazilly when the popup will becomming visible.
     * Performance savings.*/
    private static class LazyPopup extends JMenuPlus implements PropertyChangeListener {
        
        /** Indicates whether menu items were created. */
        private boolean created = false;

        
        /** Constructor. */
        public LazyPopup(Action action) {
            setText((String)action.getValue(Action.NAME));
            
            action.addPropertyChangeListener(WeakListeners.propertyChange(this, action));
        }

        
        /** Gets popup menu. Overrides superclass. Adds lazy menu items creation. */
        public JPopupMenu getPopupMenu() {
            if(!created) {
                createMenuItems();
            }
            
            return super.getPopupMenu();
        }

        /** Creates items when actually needed. */
        private void createMenuItems() {
            created = true;
            removeAll();

            ModeImpl editorMode = (ModeImpl)WindowManagerImpl.getInstance().findMode("editor"); // NOI18N
            if(editorMode != null) {
                add(new ModeMenu(editorMode, NbBundle.getMessage(AttachWindowAction.class, "CTL_Documents"), true));
                add(new JSeparator());
            }

            Set modeSet = WindowManagerImpl.getInstance().getModes();
            
            for(Iterator it = modeSet.iterator(); it.hasNext(); ) {
                ModeImpl mode = (ModeImpl)it.next();
                
                if("editor".equals(mode.getName())) { // NOI18N
                    continue;
                }

                if(!mode.getOpenedTopComponents().isEmpty()) {
                    TopComponent tc = mode.getSelectedTopComponent();
                    if(tc != null) {
                        String name = tc.getName();
                        add(new ModeMenu(mode, name == null ? "null" : name, false)); // NOI18N
                    }
                }
            }
        }

        /** Implements PropertyChangeListener. */
        public void propertyChange(PropertyChangeEvent evt) {
            if(Action.NAME.equals(evt.getPropertyName())) {
                setText((String)evt.getNewValue());
            } else if(PROP_ACTION_CHANGED.equals(evt.getPropertyName())) { // NOI18N
                created = false;
            }
        }
    } // End of class LazyPopup.

    
    /** Sub menu for each mode. */
    private static class ModeMenu extends JMenu {
        public ModeMenu(ModeImpl mode, String name, boolean editor) {
            super(name);

            TopComponent active = TopComponent.getRegistry().getActivated();
            if(mode.canContain(active)) {
                if(!editor) {
                    add(new AttachAction(mode, null));
                    add(new JSeparator());
                }

                add(new AttachAction(mode, Constants.TOP));
                add(new AttachAction(mode, Constants.LEFT));
                add(new AttachAction(mode, Constants.BOTTOM));
                add(new AttachAction(mode, Constants.RIGHT));
            } else {
                setEnabled(false);
            }
        }
    } // End of ModeMenu class.
    

    /** Action which acutally performs the attaching of the component. */
    private static class AttachAction extends AbstractAction {
        private final ModeImpl mode;
        private final String side;
        
        public AttachAction(ModeImpl mode, String side) {
            this.mode = mode;
            this.side = side;
            
            String key;
            if(side == null) {
                key = "CTL_SideAsLastTab"; // NOI18N
                TopComponent active = TopComponent.getRegistry().getActivated();
                if(mode.getOpenedTopComponents().contains(active)) {
                    setEnabled(false);
                }
            } else if(side == Constants.TOP) {
                key = "CTL_SideTop"; // NOI18N
            } else if(side == Constants.LEFT) {
                key = "CTL_SideLeft"; // NOI18N
            } else if(side == Constants.BOTTOM) {
                key = "CTL_SideBottom"; // NOI18N
            } else if(side == Constants.RIGHT) {
                key = "CTL_SideRight"; // NOI18N
            } else {
                return;
            }
            
            putValue(Action.NAME, NbBundle.getMessage(AttachWindowAction.class, key));
        }
        
        public void actionPerformed(ActionEvent evt) {
            WindowManagerImpl wm = WindowManagerImpl.getInstance();
            ModeImpl activeMode = wm.getActiveMode();
            if(activeMode == null) {
                return;
            }

            TopComponent selected = activeMode.getSelectedTopComponent();
            if(selected == null || !mode.canContain(selected)) {
                return;
            }

            if(side == null) {
                mode.dockInto(selected);
                selected.open();
                selected.requestActive();
            } else {
                wm.attachTopComponentToSide(selected, mode, side);
            }
        }
    } // End of class AttachAction.

}

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.