com.intellij.designer.propertyTable.editors.ComboEditor.java Source code

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Here is the source code for com.intellij.designer.propertyTable.editors.ComboEditor.java

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/*
 * Copyright 2000-2012 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.designer.propertyTable.editors;

import com.intellij.designer.propertyTable.PropertyEditor;
import com.intellij.openapi.ui.ComboBox;

import javax.swing.*;
import javax.swing.border.Border;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

/**
 * @author Alexander Lobas
 */
public abstract class ComboEditor extends PropertyEditor {
    protected final ComboBox myCombo;
    protected final Border myComboBorder;

    public ComboEditor() {
        myCombo = new ComboBox(-1);
        myComboBorder = myCombo.getBorder();
        installListeners(myCombo, createComboListeners());
    }

    protected ComboEditorListener createComboListeners() {
        return new ComboEditorListener(this);
    }

    public static void installListeners(JComboBox myCombo, final ComboEditorListener listener) {
        myCombo.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent event) {
                listener.onValueChosen();
            }
        });

        myCombo.registerKeyboardAction(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent event) {
                listener.onCancelled();
            }
        }, KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
    }

    @Override
    public JComponent getPreferredFocusedComponent() {
        return myCombo;
    }

    @Override
    public void activate() {
        super.activate();
        myCombo.showPopup();
    }

    @Override
    public void updateUI() {
        SwingUtilities.updateComponentTreeUI(myCombo);
        ListCellRenderer renderer = myCombo.getRenderer();
        if (renderer instanceof JComponent) {
            SwingUtilities.updateComponentTreeUI((JComponent) renderer);
        }
    }

    public static class ComboEditorListener {
        private final PropertyEditor myEditor;

        public ComboEditorListener(PropertyEditor editor) {
            myEditor = editor;
        }

        protected void onValueChosen() {
            myEditor.fireValueCommitted(true, true);
        }

        protected void onCancelled() {
            myEditor.fireEditingCancelled();
        }
    }
}