platform/lang-impl/src/com/intellij/openapi/roots/ui/configuration/actions/ContentEntryEditingAction.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
  17 package com.intellij.openapi.roots.ui.configuration.actions;
  18
  19 import com.intellij.openapi.actionSystem.*;
  20 import com.intellij.openapi.actionSystem.ex.CustomComponentAction;
  21 import com.intellij.openapi.actionSystem.impl.ActionButtonWithText;
  22 import com.intellij.openapi.fileChooser.ex.FileNodeDescriptor;
  23 import com.intellij.openapi.project.DumbAware;
  24 import com.intellij.openapi.vfs.VirtualFile;
  25 import org.jetbrains.annotations.Nullable;
  26
  27 import javax.swing.*;
  28 import javax.swing.tree.DefaultMutableTreeNode;
  29 import javax.swing.tree.TreePath;
  30
  31 /**
  32  * @author Eugene Zhuravlev
  33  *         Date: Oct 14
  34  * @author 2003
  35  *         Time: 3:07:14 PM
  36  */
  37 public abstract class ContentEntryEditingAction extends ToggleAction implements CustomComponentAction, DumbAware {
  38   protected final JTree myTree;
  39
  40   protected ContentEntryEditingAction(JTree tree) {
  41     myTree = tree;
  42     getTemplatePresentation().setEnabled(true);
  43   }
  44
  45   public void update(AnActionEvent e) {
  46     super.update(e);
  47     final Presentation presentation = e.getPresentation();
  48     presentation.setEnabled(true);
  49     final VirtualFile[] files = getSelectedFiles();
  50     if (files == null || files.length == 0) {
  51       presentation.setEnabled(false);
  52       return;
  53     }
  54     for (VirtualFile file : files) {
  55       if (file == null || !file.isDirectory()) {
  56         presentation.setEnabled(false);
  57         break;
  58       }
  59     }
  60   }
  61
  62   @Nullable
  63   protected final VirtualFile[] getSelectedFiles() {
  64     final TreePath[] selectionPaths = myTree.getSelectionPaths();
  65     if (selectionPaths == null) {
  66       return null;
  67     }
  68     final VirtualFile[] selected = new VirtualFile[selectionPaths.length];
  69     for (int i = 0; i < selectionPaths.length; i++) {
  70       TreePath treePath = selectionPaths[i];
  71       final DefaultMutableTreeNode node = (DefaultMutableTreeNode)treePath.getLastPathComponent();
  72       final Object nodeDescriptor = node.getUserObject();
  73       if (!(nodeDescriptor instanceof FileNodeDescriptor)) {
  74         return null;
  75       }
  76       selected[i] = ((FileNodeDescriptor)nodeDescriptor).getElement().getFile();
  77     }
  78     return selected;
  79   }
  80
  81   public JComponent createCustomComponent(Presentation presentation) {
  82     return new ActionButtonWithText(this, presentation, ActionPlaces.UNKNOWN, ActionToolbar.DEFAULT_MINIMUM_BUTTON_SIZE);
  83   }
  84 }