plugins/maven/src/main/java/org/jetbrains/idea/maven/utils/ComboBoxUtil.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 org.jetbrains.idea.maven.utils;
  17
  18 import com.intellij.openapi.util.Pair;
  19 import com.intellij.util.Function;
  20 import org.jetbrains.annotations.Nullable;
  21
  22 import javax.swing.*;
  23 import java.util.List;
  24
  25 public class ComboBoxUtil {
  26
  27   private static class Item {
  28     private final Object value;
  29     private final String label;
  30
  31     private Item(Object value, String label) {
  32       this.value = value;
  33       this.label = label;
  34     }
  35
  36     public Object getValue() {
  37       return value;
  38     }
  39
  40     public String toString() {
  41       return label;
  42     }
  43   }
  44
  45   public static void addToModel(DefaultComboBoxModel model, Object value, String label) {
  46     model.addElement(new Item(value, label));
  47   }
  48
  49   public static <T> void setModel(JComboBox comboBox, DefaultComboBoxModel model, List<T> values, Function<T, Pair<String, ?>> func) {
  50     model.removeAllElements();
  51     for (T each : values) {
  52       Pair<String, ?> pair = func.fun(each);
  53       addToModel(model, pair.second, pair.first);
  54     }
  55     comboBox.setModel(model);
  56   }
  57
  58   public static void select(DefaultComboBoxModel model, Object value) {
  59     for (int i = 0; i < model.getSize(); i++) {
  60       Item comboBoxUtil = (Item)model.getElementAt(i);
  61       if (comboBoxUtil.getValue().equals(value)) {
  62         model.setSelectedItem(comboBoxUtil);
  63         return;
  64       }
  65     }
  66     if (model.getSize() != 0) {
  67       model.setSelectedItem(model.getElementAt(0));
  68     }
  69   }
  70
  71   @Nullable
  72   public static String getSelectedString(DefaultComboBoxModel model) {
  73     return String.valueOf(getSelectedValue(model));
  74   }
  75
  76   @Nullable
  77   public static Object getSelectedValue(DefaultComboBoxModel model) {
  78     final Object item = model.getSelectedItem();
  79     return item != null ? ((Item)item).getValue() : null;
  80   }
  81 }