plugins/cvs/cvs-plugin/src/com/intellij/cvsSupport2/ui/AbstractListCellRenderer.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.cvsSupport2.ui;
  17
  18 import org.jetbrains.annotations.Nullable;
  19
  20 import javax.swing.*;
  21 import java.awt.*;
  22
  23 /**
  24  * author: lesya
  25  */
  26 public abstract class AbstractListCellRenderer extends DefaultListCellRenderer {
  27   protected abstract String getPresentableString(Object value);
  28   @Nullable
  29   protected Icon getPresentableIcon(Object value){
  30     return null;
  31   }
  32
  33   public Component getListCellRendererComponent(
  34       JList list,
  35       Object value,
  36       int index,
  37       boolean isSelected,
  38       boolean cellHasFocus) {
  39
  40     Component result = super.getListCellRendererComponent(list, getPresentableString(value), index, isSelected, cellHasFocus);
  41
  42     Icon icon = getPresentableIcon(value);
  43     if (icon != null)
  44       setIcon(icon);
  45
  46     return result;
  47   }
  48
  49 }