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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.cayenne.modeler.util.combo;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import javax.swing.AbstractAction;
import javax.swing.CellRendererPane;
import javax.swing.InputMap;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JList;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
/**
* EditorTextField is a text field to be used in combobox editor. It paints self normally
* when focused, otherwise combo's renderer is used.
*
*/
public class EditorTextField extends JTextField implements FocusListener {
/**
* Edited combobox
*/
protected JComboBox combo;
/**
* Panel to draw renderer component
*/
private final CellRendererPane rendererPane;
/**
* Combo's popup list is unaccessible, so we use our own default list
*/
private final JList list = new JList();
/**
* True if editor has focus.
*/
private boolean hasFocus;
public EditorTextField(JComboBox edited) {
combo = edited;
rendererPane = new CellRendererPane();
addFocusListener(this);
// hook up to TAB handler to keep entered value after TAB is pressed
initTabHandler();
}
private void initTabHandler() {
this.combo.setFocusTraversalKeysEnabled(false);
this.combo.getActionMap().put("tab-action", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
combo.setSelectedItem(getText());
Component component = getParent().getParent();
if(component instanceof JTable) {
JTable table = (JTable)component;
if((e.getModifiers() & ActionEvent.SHIFT_MASK) > 0) {
table.changeSelection(table.getEditingRow(), table.getEditingColumn()-1, false, false);
} else {
table.changeSelection(table.getEditingRow(), table.getEditingColumn()+1, false, false);
}
} else {
if((e.getModifiers() & ActionEvent.SHIFT_MASK) > 0) {
transferFocusBackward();
} else {
transferFocus();
}
}
}
});
InputMap inputMap = this.combo.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
inputMap.put(KeyStroke.getKeyStroke("TAB"), "tab-action");
inputMap.put(KeyStroke.getKeyStroke("shift TAB"), "tab-action");
}
@Override
public void paintComponent(Graphics g) {
if (hasFocus) {
super.paintComponent(g);
} else {
list.setEnabled(combo.isEnabled());
Component c = combo.getRenderer()
.getListCellRendererComponent(list, combo.getSelectedItem(), -1, false, false);
Insets insets = getInsets();
Color oldColor = g.getColor();
g.setColor(getBackground());
g.fillRect(insets.left, insets.top,
getWidth() - insets.right - insets.left, getHeight() - insets.bottom - insets.top);
g.setColor(oldColor);
rendererPane.paintComponent(g, c, combo, insets.left, insets.top,
getWidth() - insets.right - insets.left, getHeight() - insets.bottom - insets.top);
}
}
public void focusGained(FocusEvent e) {
hasFocus = true;
combo.repaint();
}
public void focusLost(FocusEvent e) {
hasFocus = false;
combo.repaint();
}
}