Change the location of the add-on in the file player
I am having a problem changing the location of an add-on in a file player.
I customized the save file dialog by checking a checkbox in the optional file selection component. But the position of the checkbox is not good, it is really ugly.
Can I move the sub component below the files panel? How to do it?
Or if you have another solution to do the same, welcome too.
Thanks guys.
I am using the following code to add this checkbox:
JFileChooser fc = new JFileChooser(file)
JPanel accessory = new JPanel();
JCheckBox isOpenBox = new JCheckBox("Open file after saving");
accessory.setLayout(new BorderLayout());
accessory.add(isOpenBox, BorderLayout.SOUTH);
fc.setAccessory(accessory);
In this screenshot, the position of the checkbox doesn't fit.
This screenshot is exactly the effect I want.
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The "correct" way would be to create a new UI / Look and Feel delegate that meets your needs. The problem is that the details you need to do (with an OO method) are hidden, either private
without public / secure access or defined locally ... this is a big problem for most L&F delegates ... thanks guys ...
So you end up copying and pasting the entire class, just to add this functionality ... and you will need to do this for whatever platform you would like to support ...
The "less optimal" way is to move around JFileChooser
and pull out the elements that you need to "modify" your requirements. It's messy, it's error-prone, it makes assumptions, and it breaks very hard.
Personally, if I had to go down this particular track, I would create a utility class that provides a simple method public
that static
would allow me to pass an instance JFileChooser
and have it based on the current platform (and / or the current look and feel ), make changes to me ... or a factory class that can automatically generate JFileChooser
, modified to meet those requirements ... but that's just an idea ...
Let me try again, this is a very bad idea for a very bad design problem and is meant to demonstrate: 1 - problems trying to change the look; 2. Problems and problems that you will have to face when trying to make this work the way you want ...
import java.awt.Component;
import java.awt.Container;
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFileChooser;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Test {
public static void main(String[] args) {
new Test();
}
public Test() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFileChooser fc = new JFileChooser();
List<JTextField> fields = findAll(JTextField.class, fc);
if (fields.size() == 1) {
JTextField fieldNameField = fields.get(0);
Container parent = fieldNameField.getParent();
JCheckBox cb = new JCheckBox("Open file after saving");
JComboBox fileTypes = findAll(JComboBox.class, parent).get(0);
parent.setLayout(new GridBagLayout());
parent.removeAll();
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.weightx = 1;
gbc.insets = new Insets(2, 2, 4, 2);
parent.add(fieldNameField, gbc); // file name field...
gbc.gridx++;
gbc.weightx = 0;
parent.add(cb, gbc); // Check box
gbc.gridx = 0;
gbc.gridy++;
gbc.gridwidth = GridBagConstraints.REMAINDER;
parent.add(fileTypes, gbc); // File types
} else {
System.out.println("Found to many results?!");
}
fc.showOpenDialog(null);
}
});
}
public <T extends Component> List<T> findAll(Class<? extends T> aClass, Container parent) {
List<T> matches = new ArrayList<>();
for (Component child : parent.getComponents()) {
if (aClass.isInstance(child)) {
matches.add((T)child);
}
if (child instanceof Container) {
matches.addAll(findAll(aClass, (Container)child));
}
}
return matches;
}
}
And no, I'm not proud ... I need to wash my eyes and brain with bleach ... icky ...
Updated with Mac support
And for those looking for a Mac version ...
This further highlights the "flaking" of this approach, it doesn't take long to break it ...
import java.awt.Component;
import java.awt.Container;
import java.awt.EventQueue;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JCheckBox;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Test {
public static void main(String[] args) {
new Test();
}
public Test() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFileChooser fc = new JFileChooser();
List<JLabel> labels = findAll(JLabel.class, fc);
JCheckBox cb = new JCheckBox("Open file after saving");
JLabel fileFormatLabel = null;
for (JLabel label : labels) {
if ("File Format:".equals(label.getText())) {
fileFormatLabel = label;
}
}
System.out.println(fileFormatLabel);
if (fileFormatLabel != null) {
Container parent = fileFormatLabel.getParent();
parent.add(cb);
}
fc.showOpenDialog(null);
}
});
}
public <T extends Component> List<T> findAll(Class<? extends T> aClass, Container parent) {
List<T> matches = new ArrayList<>();
for (Component child : parent.getComponents()) {
if (aClass.isInstance(child)) {
matches.add((T) child);
}
if (child instanceof Container) {
matches.addAll(findAll(aClass, (Container) child));
}
}
return matches;
}
}
Updated with search Locale
This is using FileChooser.filesOfTypeLabelText
UIManager.getString
to find the text of the key File Format:
, which should in theory make it (slightly) a better cross platform solution ... at least it makes mac work better ...
This also demonstrates the mess to start supporting multiple OSes ... Since I only have two ...
import java.awt.Component;
import java.awt.Container;
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Test1 {
public static void main(String[] args) {
new Test1();
}
public Test1() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFileChooser fc = new JFileChooser();
JCheckBox cb = new JCheckBox("Open file after saving");
if (System.getProperty("os.name").startsWith("Windows 7")) {
List<JTextField> fields = findAll(JTextField.class, fc);
if (fields.size() == 1) {
JTextField fieldNameField = fields.get(0);
Container parent = fieldNameField.getParent();
JComboBox fileTypes = findAll(JComboBox.class, parent).get(0);
parent.setLayout(new GridBagLayout());
parent.removeAll();
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.weightx = 1;
gbc.insets = new Insets(2, 2, 4, 2);
parent.add(fieldNameField, gbc); // file name field...
gbc.gridx++;
gbc.weightx = 0;
parent.add(cb, gbc); // Check box
gbc.gridx = 0;
gbc.gridy++;
gbc.gridwidth = GridBagConstraints.REMAINDER;
parent.add(fileTypes, gbc); // File types
}
} else if (System.getProperty("os.name").startsWith("Mac OS X")) {
Locale l = fc.getLocale();
JLabel fileFormatLabel = findLabelByText(fc, UIManager.getString("FileChooser.filesOfTypeLabelText", l), "Format:");
if (fileFormatLabel != null) {
Container parent = fileFormatLabel.getParent();
System.out.println("");
parent.add(cb);
}
}
fc.showOpenDialog(null);
}
});
}
public JLabel findLabelByText(Container parent, String... texts) {
JLabel find = null;
List<JLabel> labels = findAll(JLabel.class, parent);
for (JLabel label : labels) {
for (String text : texts) {
if (text.equals(label.getText())) {
find = label;
break;
}
}
}
return find;
}
public <T extends Component> List<T> findAll(Class<? extends T> aClass, Container parent) {
List<T> matches = new ArrayList<>();
for (Component child : parent.getComponents()) {
if (aClass.isInstance(child)) {
matches.add((T) child);
}
if (child instanceof Container) {
matches.addAll(findAll(aClass, (Container) child));
}
}
return matches;
}
}
Updated with reflection ...
Since I'm already going to be programming hell for the previous hacks, I might as well add an example using reflection to find fields.
Now, there are several ways to do this, you can, for example, list all fields by type and check various properties to determine what you want. This will be used if you don't know the actual field name OR if you have access to the source code you can directly search for the field names as in this example
import java.awt.Component;
import java.awt.Container;
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.plaf.FileChooserUI;
public class Test1 {
public static void main(String[] args) {
new Test1();
}
public Test1() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFileChooser fc = new JFileChooser();
JCheckBox cb = new JCheckBox("Open file after saving");
if (System.getProperty("os.name").startsWith("Windows 7")) {
try {
JTextField filenameTextField = (JTextField) getField("filenameTextField", fc.getUI());
JComboBox filterComboBox = (JComboBox) getField("filterComboBox", fc.getUI());
System.out.println(filenameTextField);
System.out.println(filterComboBox);
Container parent = filenameTextField.getParent();
parent.setLayout(new GridBagLayout());
parent.removeAll();
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.weightx = 1;
gbc.insets = new Insets(2, 2, 4, 2);
parent.add(filenameTextField, gbc); // file name field...
gbc.gridx++;
gbc.weightx = 0;
parent.add(cb, gbc); // Check box
gbc.gridx = 0;
gbc.gridy++;
gbc.gridwidth = GridBagConstraints.REMAINDER;
parent.add(filterComboBox, gbc); // File types
} catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException ex) {
ex.printStackTrace();
}
} else if (System.getProperty("os.name").startsWith("Mac OS X")) {
try {
JComboBox filterComboBox = (JComboBox) getField("filterComboBox", fc.getUI());
Container parent = filterComboBox.getParent();
parent.add(cb);
} catch (NoSuchFieldException | IllegalArgumentException | IllegalAccessException ex) {
ex.printStackTrace();
}
}
fc.showOpenDialog(null);
}
});
}
private Object getField(String name, Object parent) throws NoSuchFieldException, IllegalArgumentException, IllegalAccessException {
Class aClass = parent.getClass();
Field field = aClass.getDeclaredField(name);
field.setAccessible(true);
return field.get(parent);
}
}
Remember: Just because you can do something doesn't mean you should!
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