platform/lang-impl/src/com/intellij/ide/hierarchy/HierarchyNodeRenderer.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.ide.hierarchy;
  18
  19 import com.intellij.psi.PsiFile;
  20 import com.intellij.ui.ColoredTreeCellRenderer;
  21 import com.intellij.ui.FileColorManager;
  22 import org.jetbrains.annotations.Nullable;
  23
  24 import javax.swing.*;
  25 import javax.swing.tree.DefaultMutableTreeNode;
  26 import java.awt.*;
  27
  28 public final class HierarchyNodeRenderer extends ColoredTreeCellRenderer {
  29   public void customizeCellRenderer(final JTree tree, final Object value, final boolean selected, final boolean expanded, final boolean leaf,
  30                                     final int row, final boolean hasFocus) {
  31     if (value instanceof DefaultMutableTreeNode) {
  32       final DefaultMutableTreeNode node = (DefaultMutableTreeNode)value;
  33       final Object object = node.getUserObject();
  34       if (object instanceof HierarchyNodeDescriptor) {
  35         final HierarchyNodeDescriptor descriptor = (HierarchyNodeDescriptor)object;
  36         descriptor.getHighlightedText().customize(this);
  37         if (expanded){
  38           setIcon(descriptor.getOpenIcon());
  39         }
  40         else{
  41           setIcon(descriptor.getClosedIcon());
  42         }
  43         if (!selected)  {
  44           final Color color = getBackgroundColor(descriptor);
  45           if (color != null) {
  46             setBackground(color);
  47           }
  48         }
  49       }
  50     }
  51   }
  52
  53   @Nullable
  54   private static Color getBackgroundColor(final HierarchyNodeDescriptor descriptor) {
  55     final PsiFile psiFile = descriptor.getContainingFile();
  56     if (psiFile != null && psiFile.isValid()) {
  57       final FileColorManager colorManager = FileColorManager.getInstance(descriptor.getProject());
  58       return colorManager.getRendererBackground(psiFile);
  59     }
  60     return null;
  61   }
  62 }