/jEdit/tags/jedit-4-2-pre14/org/gjt/sp/jedit/menu/EnhancedMenu.java
Java | 188 lines | 120 code | 30 blank | 38 comment | 28 complexity | 30a1a43d1d6134bc45319fa38cab2007 MD5 | raw file
Possible License(s): BSD-3-Clause, AGPL-1.0, Apache-2.0, LGPL-2.0, LGPL-3.0, GPL-2.0, CC-BY-SA-3.0, LGPL-2.1, GPL-3.0, MPL-2.0-no-copyleft-exception, IPL-1.0
- /*
- * EnhancedMenu.java - jEdit menu
- * :tabSize=8:indentSize=8:noTabs=false:
- * :folding=explicit:collapseFolds=1:
- *
- * Copyright (C) 2001, 2003 Slava Pestov
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- package org.gjt.sp.jedit.menu;
- //{{{ Imports
- import javax.swing.event.*;
- import javax.swing.*;
- import java.util.StringTokenizer;
- import org.gjt.sp.jedit.msg.*;
- import org.gjt.sp.jedit.*;
- //}}}
- public class EnhancedMenu extends JMenu implements MenuListener
- {
- //{{{ EnhancedMenu constructor
- public EnhancedMenu(String name)
- {
- this(name,jEdit.getProperty(name.concat(".label")),
- jEdit.getActionContext());
- } //}}}
- //{{{ EnhancedMenu constructor
- public EnhancedMenu(String name, String label)
- {
- this(name,label,jEdit.getActionContext());
- } //}}}
- //{{{ EnhancedMenu constructor
- public EnhancedMenu(String name, String label, ActionContext context)
- {
- this.context = context;
- if(label == null)
- label = name;
- char mnemonic;
- int index = label.indexOf('$');
- if(index != -1 && label.length() - index > 1)
- {
- mnemonic = Character.toLowerCase(label.charAt(index + 1));
- label = label.substring(0,index).concat(label.substring(++index));
- }
- else
- mnemonic = '\0';
- setText(label);
- if(!OperatingSystem.isMacOS())
- setMnemonic(mnemonic);
- String menuItems = jEdit.getProperty(name);
- if(menuItems != null)
- {
- StringTokenizer st = new StringTokenizer(menuItems);
- while(st.hasMoreTokens())
- {
- String menuItemName = st.nextToken();
- if(menuItemName.equals("-"))
- addSeparator();
- else
- add(GUIUtilities.loadMenuItem(context,menuItemName,true));
- }
- }
- initialComponentCount = getMenuComponentCount();
- providerCode = jEdit.getProperty(name + ".code");
- ebStub = new EditBusStub(name);
- ebStub.menuOutOfDate = true;
- addMenuListener(this);
- if(providerCode != null)
- EditBus.addToBus(ebStub);
- } //}}}
- //{{{ menuSelected() method
- public void menuSelected(MenuEvent evt)
- {
- init();
- } //}}}
- public void menuDeselected(MenuEvent e) {}
- public void menuCanceled(MenuEvent e) {}
- //{{{ init() method
- public void init()
- {
- if(providerCode == null)
- return;
- if(provider == null)
- {
- Object obj = BeanShell.eval(null,
- BeanShell.getNameSpace(),
- providerCode);
- provider = (DynamicMenuProvider)obj;
- }
- if(provider == null)
- {
- // error
- providerCode = null;
- return;
- }
- if(ebStub.menuOutOfDate || provider.updateEveryTime())
- {
- ebStub.menuOutOfDate = false;
- while(getMenuComponentCount() != initialComponentCount)
- remove(getMenuComponentCount() - 1);
- if(provider != null)
- provider.update(this);
- }
- } //}}}
- //{{{ Protected members
- protected int initialComponentCount;
- protected ActionContext context;
- protected String providerCode;
- protected DynamicMenuProvider provider;
- protected EditBusStub ebStub;
- //{{{ finalize() method
- protected void finalize() throws Exception
- {
- if(ebStub != null)
- EditBus.removeFromBus(ebStub);
- } //}}}
- //}}}
- //{{{ EditBusStub class
- /* EnhancedMenu has a reference to EditBusStub, but not the other
- * way around. So when the EnhancedMenu is being garbage collected
- * its finalize() method removes the EditBusStub from the edit bus. */
- static class EditBusStub implements EBComponent
- {
- String name;
- boolean menuOutOfDate;
- EditBusStub(String name)
- {
- this.name = name;
- menuOutOfDate = true;
- }
- public void handleMessage(EBMessage msg)
- {
- if(msg instanceof DynamicMenuChanged
- && name.equals(((DynamicMenuChanged)msg)
- .getMenuName()))
- {
- menuOutOfDate = true;
- }
- else if(msg instanceof PropertiesChanged)
- {
- // while this might be questionable, some
- // menus depend on properties
- menuOutOfDate = true;
- }
- }
- } //}}}
- }