| /* |
| * 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.openide.windows; |
| |
| import java.awt.Component; |
| import java.awt.EventQueue; |
| import java.awt.KeyboardFocusManager; |
| import java.lang.ref.Reference; |
| import java.lang.ref.WeakReference; |
| import javax.swing.AbstractButton; |
| import javax.swing.Action; |
| import javax.swing.ActionMap; |
| import org.openide.util.ContextAwareAction; |
| import org.openide.util.Lookup; |
| import org.openide.util.ContextGlobalProvider; |
| import org.openide.util.Utilities; |
| import org.openide.util.lookup.Lookups; |
| import org.openide.util.lookup.ProxyLookup; |
| import org.openide.windows.TopComponent; |
| |
| /** An interface that can be registered in a lookup by subsystems |
| * wish to provide a global context actions should react to. |
| * |
| * @author Jaroslav Tulach |
| */ |
| @org.openide.util.lookup.ServiceProvider(service=org.openide.util.ContextGlobalProvider.class) |
| public final class GlobalActionContextImpl extends Object |
| implements ContextGlobalProvider, Lookup.Provider, java.beans.PropertyChangeListener, Runnable { |
| /** registry to work with */ |
| private TopComponent.Registry registry; |
| |
| public GlobalActionContextImpl () { |
| this (TopComponent.getRegistry()); |
| } |
| |
| public GlobalActionContextImpl (TopComponent.Registry r) { |
| this.registry = r; |
| if (EventQueue.isDispatchThread()) { |
| run(); |
| } else { |
| EventQueue.invokeLater(this); |
| } |
| } |
| |
| @Override |
| public void run() { |
| KeyboardFocusManager m = KeyboardFocusManager.getCurrentKeyboardFocusManager(); |
| m.removePropertyChangeListener("permanentFocusOwner", this); // NOI18N |
| m.addPropertyChangeListener("permanentFocusOwner", this); // NOI18N |
| setFocusOwner(m.getPermanentFocusOwner()); |
| } |
| |
| /** we also manage the current focus owner */ |
| private static Reference<Component> focusOwner; |
| /** the lookup to temporarily use */ |
| private static volatile Lookup temporary; |
| /** Temporarily provides different action map in the lookup. |
| */ |
| public static void blickActionMap(ActionMap map) { |
| blickActionMap(map, null); |
| } |
| private static void blickActionMap(final ActionMap map, final Component[] focus) { |
| if (EventQueue.isDispatchThread()) { |
| blickActionMapImpl(map, focus); |
| } else { |
| EventQueue.invokeLater(new Runnable() { |
| public void run() { |
| blickActionMapImpl(map, focus); |
| } |
| }); |
| } |
| } |
| |
| static void blickActionMapImpl(ActionMap map, Component[] focus) { |
| assert EventQueue.isDispatchThread(); |
| Object obj = Lookup.getDefault ().lookup (ContextGlobalProvider.class); |
| if (obj instanceof GlobalActionContextImpl) { |
| GlobalActionContextImpl g = (GlobalActionContextImpl)obj; |
| |
| Lookup[] arr = { |
| map == null ? Lookup.EMPTY : Lookups.singleton (map), |
| Lookups.exclude (g.getLookup (), new Class[] { javax.swing.ActionMap.class }), |
| }; |
| |
| Lookup originalLkp = g.getLookup(); |
| Lookup prev = temporary; |
| try { |
| temporary = new ProxyLookup (arr); |
| Lookup actionsGlobalContext = Utilities.actionsGlobalContext(); |
| Object q = actionsGlobalContext.lookup (javax.swing.ActionMap.class); |
| assert q == map : dumpActionMapInfo(map, q, prev, temporary, actionsGlobalContext, originalLkp); |
| if (focus != null) { |
| setFocusOwner(focus[0]); |
| } |
| } finally { |
| temporary = prev; |
| // fire the changes about return of the values back |
| org.openide.util.Utilities.actionsGlobalContext ().lookup (javax.swing.ActionMap.class); |
| } |
| } |
| } |
| |
| private static String dumpActionMapInfo(ActionMap map, Object q, Lookup prev, Lookup now, |
| Lookup globalContext, Lookup originalLkp) { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("We really get map from the lookup. Map: ").append(map) // NOI18N |
| .append(" returned: ").append(q); // NOI18N |
| sb.append("\nprev: ").append(prev == null ? "null prev" : prev.lookupAll(Object.class)); //NOI18N |
| sb.append("\nnow : ").append(now == null ? "null now" : now.lookupAll(Object.class)); //NOI18N |
| sb.append("\nglobal ctx : ").append(globalContext == null ? "null" : globalContext.lookupAll(Object.class)); //NOI18N |
| sb.append("\noriginal lkp : ").append(originalLkp == null ? "null" : originalLkp.lookupAll(Object.class)); //NOI18N |
| return sb.toString(); |
| } |
| |
| private static void setFocusOwner(Component focus) { |
| focusOwner = new WeakReference<Component>(focus); |
| } |
| public static Component findFocusOwner() { |
| if (focusOwner == null) { |
| Utilities.actionsGlobalContext(); |
| if (focusOwner == null) { |
| // give up |
| setFocusOwner(null); |
| } |
| } |
| return focusOwner.get(); |
| } |
| |
| /** Let's create the proxy listener that delegates to currently |
| * selected top component. |
| */ |
| public Lookup createGlobalContext() { |
| registry.addPropertyChangeListener(this); |
| return org.openide.util.lookup.Lookups.proxy(this); |
| } |
| |
| /** The current component lookup */ |
| public Lookup getLookup() { |
| Lookup l = temporary; |
| if (l != null) { |
| return l; |
| } |
| |
| TopComponent tc = registry.getActivated(); |
| return tc == null ? Lookup.EMPTY : tc.getLookup(); |
| } |
| |
| /** Requests refresh of our lookup everytime component is chagned. |
| */ |
| public void propertyChange(java.beans.PropertyChangeEvent evt) { |
| if (TopComponent.Registry.PROP_ACTIVATED.equals (evt.getPropertyName())) { |
| org.openide.util.Utilities.actionsGlobalContext ().lookup (javax.swing.ActionMap.class); |
| } |
| if ("permanentFocusOwner".equals(evt.getPropertyName())) { |
| Component[] arr = { (Component)evt.getNewValue() }; |
| if (arr[0] instanceof AbstractButton) { |
| Action a = ((AbstractButton)arr[0]).getAction(); |
| if (a instanceof ContextAwareAction) { |
| // ignore focus change into a button with our action |
| return; |
| } |
| } |
| blickActionMap(null, arr); |
| } |
| } |
| |
| } |