platform/vcs-impl/src/com/intellij/openapi/vcs/changes/committed/LabeledComboBoxAction.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.openapi.vcs.changes.committed;
  17
  18 import com.intellij.openapi.actionSystem.AnAction;
  19 import com.intellij.openapi.actionSystem.AnActionEvent;
  20 import com.intellij.openapi.actionSystem.Presentation;
  21 import com.intellij.openapi.actionSystem.ex.CustomComponentAction;
  22
  23 import javax.swing.*;
  24 import java.awt.*;
  25 import java.awt.event.ActionEvent;
  26 import java.awt.event.ActionListener;
  27
  28 /**
  29  * @author yole
  30  */
  31 public abstract class LabeledComboBoxAction extends AnAction implements CustomComponentAction {
  32   private final JLabel myLabel;
  33   private JPanel myPanel;
  34   private final JComboBox myComboBox;
  35
  36   protected LabeledComboBoxAction(String label) {
  37     final String labelString = label;
  38     myComboBox = new JComboBox();
  39     myLabel = new JLabel(labelString);
  40   }
  41
  42   public void actionPerformed(AnActionEvent e) {
  43   }
  44
  45   public JComponent createCustomComponent(Presentation presentation) {
  46     if (myPanel == null) {
  47       myPanel = new JPanel(new BorderLayout());
  48       myPanel.setBorder(BorderFactory.createEmptyBorder(0, 4, 0, 4));
  49       myPanel.add(myLabel, BorderLayout.WEST);
  50       myComboBox.addActionListener(new ActionListener() {
  51         public void actionPerformed(final ActionEvent e) {
  52           selectionChanged(myComboBox.getSelectedItem());
  53         }
  54       });
  55       myComboBox.setModel(createModel());
  56       myPanel.add(myComboBox, BorderLayout.CENTER);
  57     }
  58     return myPanel;
  59   }
  60
  61   protected void setModel(final ComboBoxModel model) {
  62     myComboBox.setModel(model);
  63   }
  64
  65   protected void enableSelf(final boolean enable) {
  66     myComboBox.setEnabled(enable);
  67     myLabel.setEnabled(enable);
  68   }
  69
  70   protected boolean isEnabled() {
  71     return myComboBox.isEnabled();
  72   }
  73
  74   protected Object getSelected() {
  75     return myComboBox.getSelectedItem();
  76   }
  77
  78   protected ComboBoxModel getModel() {
  79     return myComboBox.getModel();
  80   }
  81
  82   protected void setRenderer(final ListCellRenderer renderer) {
  83     myComboBox.setRenderer(renderer);
  84   }
  85
  86   protected abstract void selectionChanged(Object selection);
  87
  88   protected abstract ComboBoxModel createModel();
  89
  90   public void setSelected(final int idx) {
  91     final ComboBoxModel boxModel = getModel();
  92     if (boxModel.getSize() > 0) {
  93       boxModel.setSelectedItem(boxModel.getElementAt(idx));
  94     }
  95   }
  96 }