platform/platform-api/src/com/intellij/ui/PopupHandler.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.ui;
  17
  18 import com.intellij.openapi.actionSystem.ActionGroup;
  19 import com.intellij.openapi.actionSystem.ActionManager;
  20 import com.intellij.openapi.actionSystem.ActionPlaces;
  21 import com.intellij.openapi.actionSystem.ActionPopupMenu;
  22 import com.intellij.openapi.application.ApplicationManager;
  23 import org.jetbrains.annotations.NonNls;
  24 import org.jetbrains.annotations.NotNull;
  25
  26 import javax.swing.*;
  27 import java.awt.*;
  28 import java.awt.event.MouseAdapter;
  29 import java.awt.event.MouseEvent;
  30 import java.awt.event.MouseListener;
  31 import java.util.Arrays;
  32
  33 /**
  34  * @author Eugene Belyaev
  35  */
  36 public abstract class PopupHandler extends MouseAdapter {
  37   public abstract void invokePopup(Component comp, int x, int y);
  38
  39   public void mouseClicked(MouseEvent e) {
  40     if (e.isPopupTrigger()) {
  41       invokePopup(e.getComponent(), e.getX(), e.getY());
  42       e.consume();
  43     }
  44   }
  45
  46   public void mousePressed(MouseEvent e) {
  47     if (e.isPopupTrigger()) {
  48       invokePopup(e.getComponent(), e.getX(), e.getY());
  49       e.consume();
  50     }
  51   }
  52
  53   public void mouseReleased(MouseEvent e) {
  54     if (e.isPopupTrigger()) {
  55       invokePopup(e.getComponent(), e.getX(), e.getY());
  56       e.consume();
  57     }
  58   }
  59
  60   public static void installPopupHandler(JComponent component, @NonNls String groupId, String place) {
  61     ActionGroup group = (ActionGroup)ActionManager.getInstance().getAction(groupId);
  62     installPopupHandler(component, group, place, ActionManager.getInstance());
  63   }
  64
  65   public static MouseListener installPopupHandler(JComponent component, @NotNull final ActionGroup group, final String place, final ActionManager actionManager) {
  66     if (ApplicationManager.getApplication() == null) return new MouseAdapter(){};
  67     PopupHandler popupHandler = new PopupHandler() {
  68       public void invokePopup(Component comp, int x, int y) {
  69         final ActionPopupMenu popupMenu = actionManager.createActionPopupMenu(place, group);
  70         popupMenu.getComponent().show(comp, x, y);
  71       }
  72     };
  73     component.addMouseListener(popupHandler);
  74     return popupHandler;
  75   }
  76
  77   public static MouseListener installFollowingSelectionTreePopup(final JTree tree, @NotNull final ActionGroup group, final String place, final ActionManager actionManager){
  78     if (ApplicationManager.getApplication() == null) return new MouseAdapter(){};
  79     PopupHandler handler = new PopupHandler() {
  80       public void invokePopup(Component comp, int x, int y) {
  81         if (tree.getPathForLocation(x, y) != null && Arrays.binarySearch(tree.getSelectionRows(), tree.getRowForLocation(x, y)) > -1) { //do not show popup menu on rows other than selection
  82           final ActionPopupMenu popupMenu = actionManager.createActionPopupMenu(place, group);
  83           popupMenu.getComponent().show(comp, x, y);
  84         }
  85       }
  86     };
  87     tree.addMouseListener(handler);
  88     return handler;
  89   }
  90
  91   public static MouseListener installUnknownPopupHandler(JComponent component, ActionGroup group, ActionManager actionManager) {
  92     return installPopupHandler(component, group,  ActionPlaces.UNKNOWN, actionManager);
  93   }
  94 }