platform/platform-impl/src/com/intellij/ide/actions/BaseResizeAction.java

   1 /*
   2  * Copyright 2000-2010 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.ide.actions;
  17
  18 import com.intellij.openapi.actionSystem.AnAction;
  19 import com.intellij.openapi.actionSystem.AnActionEvent;
  20 import com.intellij.openapi.actionSystem.PlatformDataKeys;
  21 import com.intellij.openapi.project.DumbAware;
  22 import com.intellij.openapi.project.Project;
  23 import com.intellij.openapi.wm.ToolWindow;
  24 import com.intellij.openapi.wm.ToolWindowManager;
  25 import com.intellij.openapi.wm.ToolWindowType;
  26
  27 public abstract class BaseResizeAction extends AnAction implements DumbAware {
  28
  29   private ToolWindow myLastWindow;
  30   private ToolWindowManager myLastManager;
  31
  32   @Override
  33   public final void update(AnActionEvent e) {
  34     Project project = PlatformDataKeys.PROJECT.getData(e.getDataContext());
  35     if (project == null) {
  36       setDisabled(e);
  37       return;
  38     }
  39
  40     ToolWindowManager mgr = ToolWindowManager.getInstance(project);
  41
  42     String active = mgr.getActiveToolWindowId();
  43     if (active != null) {
  44       ToolWindow window = mgr.getToolWindow(active);
  45
  46       if (!window.isAvailable() || !window.isVisible() || window.getType() == ToolWindowType.FLOATING) {
  47         setDisabled(e);
  48         return;
  49       }
  50
  51       update(window, mgr);
  52       if (e.getPresentation().isEnabled()) {
  53         myLastWindow = window;
  54         myLastManager = mgr;
  55       } else {
  56         setDisabled(e);
  57       }
  58     } else {
  59       setDisabled(e);
  60     }
  61   }
  62
  63   private void setDisabled(AnActionEvent e) {
  64     e.getPresentation().setEnabled(false);
  65     myLastWindow = null;
  66     myLastManager = null;
  67   }
  68
  69   protected abstract void update(ToolWindow window, ToolWindowManager mgr);
  70
  71   @Override
  72   public final void actionPerformed(AnActionEvent e) {
  73     actionPerformed(e, myLastWindow, myLastManager);
  74   }
  75
  76   protected abstract void actionPerformed(AnActionEvent e, ToolWindow wnd, ToolWindowManager mgr);
  77 }