| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.ui; |
| |
| import com.intellij.openapi.util.Pair; |
| |
| import javax.swing.*; |
| import javax.swing.event.ListDataEvent; |
| import javax.swing.event.ListDataListener; |
| import javax.swing.event.ListSelectionEvent; |
| import javax.swing.event.ListSelectionListener; |
| import java.awt.*; |
| import java.beans.PropertyChangeEvent; |
| import java.beans.PropertyChangeListener; |
| |
| public class ListExpandableItemsHandler extends AbstractExpandableItemsHandler<Integer, JList> { |
| protected ListExpandableItemsHandler(final JList list) { |
| super(list); |
| |
| final ListSelectionListener selectionListener = new ListSelectionListener() { |
| public void valueChanged(ListSelectionEvent e) { |
| if (e.getValueIsAdjusting()) return; |
| |
| updateSelection(list); |
| } |
| }; |
| list.getSelectionModel().addListSelectionListener(selectionListener); |
| |
| list.addPropertyChangeListener("selectionModel", new PropertyChangeListener() { |
| @Override |
| public void propertyChange(PropertyChangeEvent evt) { |
| updateSelection(list); |
| |
| if (evt.getOldValue() != null) { |
| ((ListSelectionModel)evt.getOldValue()).removeListSelectionListener(selectionListener); |
| } |
| if (evt.getNewValue() != null) { |
| ((ListSelectionModel)evt.getNewValue()).addListSelectionListener(selectionListener); |
| } |
| } |
| }); |
| |
| |
| final ListDataListener modelListener = new ListDataListener() { |
| public void intervalAdded(ListDataEvent e) { |
| updateSelection(list); |
| } |
| |
| public void intervalRemoved(ListDataEvent e) { |
| updateSelection(list); |
| } |
| |
| public void contentsChanged(ListDataEvent e) { |
| updateSelection(list); |
| } |
| }; |
| |
| if (list.getModel() != null) list.getModel().addListDataListener(modelListener); |
| list.addPropertyChangeListener("model", new PropertyChangeListener() { |
| @Override |
| public void propertyChange(PropertyChangeEvent evt) { |
| updateSelection(list); |
| |
| if (evt.getOldValue() != null) { |
| ((ListModel)evt.getOldValue()).removeListDataListener(modelListener); |
| } |
| if (evt.getNewValue() != null) { |
| ((ListModel)evt.getNewValue()).addListDataListener(modelListener); |
| } |
| } |
| }); |
| } |
| |
| private void updateSelection(JList list) { |
| int selection = list.getSelectedIndices().length == 1 ? list.getSelectedIndex() : -1; |
| handleSelectionChange(selection == -1 ? null : new Integer(selection)); |
| } |
| |
| protected Integer getCellKeyForPoint(Point point) { |
| int rowIndex = myComponent.locationToIndex(point); |
| return rowIndex != -1 ? new Integer(rowIndex) : null; |
| } |
| |
| protected Pair<Component, Rectangle> getCellRendererAndBounds(Integer key) { |
| int rowIndex = key.intValue(); |
| |
| Rectangle bounds = myComponent.getCellBounds(rowIndex, rowIndex); |
| if (bounds == null) return null; |
| |
| ListCellRenderer renderer = myComponent.getCellRenderer(); |
| if (renderer == null) return null; |
| |
| ListModel model = myComponent.getModel(); |
| if (rowIndex >= model.getSize()) return null; |
| |
| Component rendererComponent = renderer.getListCellRendererComponent( |
| myComponent, |
| model.getElementAt(rowIndex), |
| rowIndex, |
| myComponent.isSelectedIndex(rowIndex), |
| myComponent.hasFocus() |
| ); |
| |
| bounds.width = rendererComponent.getPreferredSize().width; |
| |
| return Pair.create(rendererComponent, bounds); |
| } |
| } |