| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed 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 com.intellij.openapi.wm; |
| |
| import com.intellij.openapi.Disposable; |
| import com.intellij.openapi.ui.Painter; |
| import com.intellij.openapi.util.Disposer; |
| import com.intellij.util.ui.update.Activatable; |
| import com.intellij.util.ui.update.UiNotifyConnector; |
| |
| import javax.swing.*; |
| import java.awt.*; |
| import java.awt.event.MouseEvent; |
| |
| public class IdeGlassPaneUtil { |
| |
| private IdeGlassPaneUtil() { |
| } |
| |
| public static IdeGlassPane find(Component component) { |
| if (!(component instanceof JComponent)) throw new IllegalArgumentException("Component must be instance of JComponent"); |
| |
| final JRootPane root = ((JComponent)component).getRootPane(); |
| if (root == null) throw new IllegalArgumentException("Component must be visible in order to find glass pane for it"); |
| |
| final Component gp = root.getGlassPane(); |
| if (!(gp instanceof IdeGlassPane)) { |
| throw new IllegalArgumentException("Glass pane should be " + IdeGlassPane.class.getName()); |
| } |
| return (IdeGlassPane)gp; |
| } |
| |
| public static void installPainter(final JComponent target, final Painter painter, final Disposable parent) { |
| final UiNotifyConnector connector = new UiNotifyConnector(target, new Activatable() { |
| |
| IdeGlassPane myPane; |
| |
| public void showNotify() { |
| IdeGlassPane pane = find(target); |
| if (myPane != null && myPane != pane) { |
| myPane.removePainter(painter); |
| } |
| myPane = pane; |
| myPane.addPainter(target, painter, parent); |
| } |
| |
| public void hideNotify() { |
| if (myPane != null) { |
| myPane.removePainter(painter); |
| } |
| } |
| }); |
| Disposer.register(parent, connector); |
| } |
| |
| public static boolean canBePreprocessed(MouseEvent e) { |
| Component c = SwingUtilities.getDeepestComponentAt(e.getComponent(), e.getX(), e.getY()); |
| |
| if (c instanceof IdeGlassPane.TopComponent) { |
| return ((IdeGlassPane.TopComponent)c).canBePreprocessed(e); |
| } |
| |
| return true; |
| } |
| |
| } |