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FreeHEP GraphicsIO Base Library
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// Copyright 2003, FreeHEP.
package org.freehep.graphicsio.exportchooser;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.text.ParseException;
import java.util.Properties;
import javax.swing.JComboBox;
import javax.swing.JFormattedTextField;
import javax.swing.JLabel;
import org.freehep.graphicsbase.swing.layout.TableLayout;
import org.freehep.graphicsbase.util.UserProperties;
import org.freehep.graphicsio.PageConstants;
/**
*
* @author Mark Donszelmann
* @version $Id: freehep-graphicsio/src/main/java/org/freehep/graphicsio/exportchooser/PageMarginPanel.java 5641ca92a537 2005/11/26 00:15:35 duns $
*/
public class PageMarginPanel extends OptionPanel {
final private static String pageMarginList[] = { "Custom",
PageConstants.SMALL, PageConstants.MEDIUM, PageConstants.LARGE };
private String key;
private Insets initialMargins;
private JComboBox pageMarginCombo;
private JFormattedTextField top, left, bottom, right;
public PageMarginPanel(Properties user, String rootKey) {
super("Page Margins");
key = rootKey + "." + PageConstants.PAGE_MARGINS;
UserProperties options = new UserProperties(user);
initialMargins = options.getPropertyInsets(key);
pageMarginCombo = new JComboBox(pageMarginList);
add(TableLayout.LEFT, new JLabel("Preset Margins"));
add(TableLayout.RIGHT, pageMarginCombo);
add(TableLayout.LEFT, new JLabel("Top"));
top = new JFormattedTextField(new TextFieldFormatter());
top.setColumns(10);
add(TableLayout.RIGHT, top);
add(TableLayout.LEFT, new JLabel("Bottom"));
bottom = new JFormattedTextField(new TextFieldFormatter());
bottom.setColumns(10);
add(TableLayout.RIGHT, bottom);
add(TableLayout.LEFT, new JLabel("Left"));
left = new JFormattedTextField(new TextFieldFormatter());
left.setColumns(10);
add(TableLayout.RIGHT, left);
add(TableLayout.LEFT, new JLabel("Right"));
right = new JFormattedTextField(new TextFieldFormatter());
right.setColumns(10);
add(TableLayout.RIGHT, right);
pageMarginCombo.addItemListener(new ComboListener());
top.addActionListener(new TextFieldListener());
bottom.addActionListener(new TextFieldListener());
left.addActionListener(new TextFieldListener());
right.addActionListener(new TextFieldListener());
// now set the initial values
top.setValue(new Integer(initialMargins.top));
bottom.setValue(new Integer(initialMargins.bottom));
left.setValue(new Integer(initialMargins.left));
right.setValue(new Integer(initialMargins.right));
// trigger the changes
new TextFieldListener().actionPerformed(null);
new ComboListener().itemStateChanged(null);
}
public boolean applyChangedOptions(Properties options) {
boolean changed = false;
Insets margins = new Insets(((Number) top.getValue()).intValue(),
((Number) left.getValue()).intValue(), ((Number) bottom
.getValue()).intValue(), ((Number) right.getValue())
.intValue());
if (!margins.equals(initialMargins)) {
UserProperties.setProperty(options, key, margins);
changed = true;
}
return changed;
}
private class ComboListener implements ItemListener {
public void itemStateChanged(ItemEvent e) {
int index = pageMarginCombo.getSelectedIndex();
if (index != 0) {
Insets insets = PageConstants.getMargins(pageMarginList[index]);
top.setValue(new Integer(insets.top));
bottom.setValue(new Integer(insets.bottom));
left.setValue(new Integer(insets.left));
right.setValue(new Integer(insets.right));
}
}
}
private class TextFieldListener implements ActionListener {
public void actionPerformed(ActionEvent event) {
Insets margins = new Insets(((Number) top.getValue()).intValue(),
((Number) left.getValue()).intValue(), ((Number) bottom
.getValue()).intValue(),
((Number) right.getValue()).intValue());
for (int i = 1; i < pageMarginList.length; i++) {
Insets insets = PageConstants.getMargins(pageMarginList[i]);
if (margins.equals(insets)) {
pageMarginCombo.setSelectedIndex(i);
return;
}
}
pageMarginCombo.setSelectedIndex(0); // Custom
}
}
private class TextFieldFormatter extends
JFormattedTextField.AbstractFormatter {
JFormattedTextField field;
public void install(JFormattedTextField field) {
super.install(field);
this.field = field;
}
public void uninstall() {
field = null;
}
// only positive (and zero) integer values
public Object stringToValue(String text) throws ParseException {
try {
Integer value = new Integer(text);
return value;
} catch (NumberFormatException nfe) {
Object value = field.getValue();
field.setValue(value);
return value;
}
}
public String valueToString(Object value) throws ParseException {
if (value == null)
return "0";
return value.toString();
}
}
}
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