Improved value storage for ColorChooser.

Made invalid input signal for ColorChooser less intrusive.
Added error visualization for FormattedTextField.
Fixed error where ListCellRenderer could not be loaded from defaults.

src/main/java/com/weis/darklaf/ui/colorchooser/ColorValueFormatter.java

@@ -33,6 +33,8 @@ import javax.swing.text.BadLocationException;
 import javax.swing.text.DefaultFormatterFactory;
 import javax.swing.text.DocumentFilter;
 import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
 import java.awt.event.FocusEvent;
 import java.awt.event.FocusListener;
 import java.text.ParseException;
@@ -42,7 +44,8 @@ import static java.util.Locale.ENGLISH;
 /**
  * @author Jannis Weis
  */
-public final class ColorValueFormatter extends JFormattedTextField.AbstractFormatter implements FocusListener {
+public final class ColorValueFormatter extends JFormattedTextField.AbstractFormatter implements FocusListener,
+        ActionListener {
 
     private final int fieldIndex;
     private final int radix;
@@ -50,6 +53,7 @@ public final class ColorValueFormatter extends JFormattedTextField.AbstractForma
     private DarkColorModel model;
     private boolean transparencyEnabled;
     private JFormattedTextField text;
+    private final Timer errorTimer;
     private final DocumentFilter filter = new DocumentFilter() {
         @Override
         public void remove(@NotNull final FilterBypass fb, final int offset,
@@ -58,7 +62,7 @@ public final class ColorValueFormatter extends JFormattedTextField.AbstractForma
                 fb.remove(offset, length);
                 commit();
             } else {
-                Toolkit.getDefaultToolkit().beep();
+                error();
             }
         }
 
@@ -75,7 +79,7 @@ public final class ColorValueFormatter extends JFormattedTextField.AbstractForma
                     return;
                 }
             }
-            Toolkit.getDefaultToolkit().beep();
+            error();
         }
 
         @Override
@@ -90,7 +94,7 @@ public final class ColorValueFormatter extends JFormattedTextField.AbstractForma
                     return;
                 }
             }
-            Toolkit.getDefaultToolkit().beep();
+            error();
         }
     };
 
@@ -99,6 +103,20 @@ public final class ColorValueFormatter extends JFormattedTextField.AbstractForma
         this.fieldIndex = index;
         this.radix = hex ? 16 : 10;
         this.hex = hex;
+        this.errorTimer = new Timer(UIManager.getInt("ColorChooser.errorDelay"), this);
+        errorTimer.setRepeats(false);
+    }
+
+    protected void error() {
+        text.putClientProperty("JTextField.hasError", true);
+        text.repaint();
+        errorTimer.restart();
+    }
+
+    @Override
+    public void actionPerformed(final ActionEvent e) {
+        text.putClientProperty("JTextField.hasError", false);
+        text.repaint();
     }
 
     @NotNull
@@ -112,6 +130,8 @@ public final class ColorValueFormatter extends JFormattedTextField.AbstractForma
     }
 
     private void commit() {
+        text.putClientProperty("JTextField.hasError", false);
+        text.repaint();
         SwingUtilities.invokeLater(() -> {
             try {
                 if (text != null) {
@@ -179,10 +199,7 @@ public final class ColorValueFormatter extends JFormattedTextField.AbstractForma
                 return model.getDefault(fieldIndex);
             }
             if (hex) {
-                var hexStr = text;
-                if (hexStr.length() == 6) {
-                    hexStr += "FF";
-                }
+                var hexStr = String.format("%1$-" + getHexLength() + "s", text).replaceAll(" ", "F");
                 int r = Integer.valueOf(hexStr.substring(0, 2), 16);
                 checkRange(r, 0, 255);
                 int g = Integer.valueOf(hexStr.substring(2, 4), 16);
@@ -191,7 +208,7 @@ public final class ColorValueFormatter extends JFormattedTextField.AbstractForma
                 checkRange(b, 0, 255);
                 int alpha = Integer.valueOf(hexStr.substring(6, 8), 16);
                 checkRange(alpha, 0, 255);
-                return Integer.valueOf(text, radix);
+                return new Color(r, g, b, alpha);
             } else {
                 var value = Integer.valueOf(text, this.radix);
                 var min = model.getMinimum(fieldIndex);
@@ -215,27 +232,19 @@ public final class ColorValueFormatter extends JFormattedTextField.AbstractForma
     @Contract("null -> fail")
     @Override
     public String valueToString(final Object object) throws ParseException {
-        if (object instanceof Integer) {
-            if (radix == 10) {
+        if (object instanceof Integer && !hex) {
                 return object.toString();
-            }
-            if (hex) {
+        } else if (object instanceof Color && hex) {
+            var c = (Color) object;
+            int r = c.getRed();
+            int g = c.getGreen();
+            int b = c.getBlue();
+            int a = c.getAlpha();
             if (getHexLength() == 8) {
-                    var hexStr = String.format("%08X", object);
-                    hexStr = hexStr.substring(2) + hexStr.substring(0, 2);
-                    return hexStr;
+                return String.format("%02X%02X%02X%02X", r, g, b, a);
             } else {
-                    return String.format("%06X", (0xFFFFFF & (Integer) object));
-                }
-            }
-            int value = (Integer) object;
-            int index = getLength();
-            char[] array = new char[index];
-            while (0 < index--) {
-                array[index] = Character.forDigit(value & 0x0F, this.radix);
-                value >>= 4;
+                return String.format("%02X%02X%02X", r, g, b);
             }
-            return new String(array).toUpperCase(ENGLISH);
         }
         throw new ParseException("illegal object", 0);
     }

src/main/java/com/weis/darklaf/ui/colorchooser/DarkColorChooserPanel.java

@@ -375,9 +375,9 @@ public class DarkColorChooserPanel extends AbstractColorChooserPanel implements
         isChanging = true;
         boolean transparencyEnabled = isColorTransparencySelectionEnabled();
         if (transparencyEnabled) {
-            textHex.setValue(c.getRGB());
+            textHex.setValue(c);
         } else {
-            textHex.setValue(new Color(c.getRed(), c.getGreen(), c.getBlue()).getRGB());
+            textHex.setValue(ColorUtil.removeAlpha(c));
         }
         isChanging = changingOld;
     }

src/main/java/com/weis/darklaf/ui/filechooser/DarkFileChooserUI.java

@@ -32,6 +32,8 @@ import sun.swing.FilePane;
 import javax.accessibility.AccessibleContext;
 import javax.swing.*;
 import javax.swing.border.EmptyBorder;
+import javax.swing.event.ListDataEvent;
+import javax.swing.event.ListDataListener;
 import javax.swing.filechooser.FileSystemView;
 import javax.swing.plaf.ComponentUI;
 import java.awt.*;
@@ -225,13 +227,7 @@ public class DarkFileChooserUI extends DarkFileChooserUIBridge {
         populateFileNameLabel();
         fileNamePanel.add(fileNameLabel);
 
-        @SuppressWarnings("serial") // anonymous class
-                JTextField tmp2 = new JTextField(35) {
-            public Dimension getMaximumSize() {
-                return new Dimension(Short.MAX_VALUE, super.getPreferredSize().height);
-            }
-        };
-        fileNameTextField = tmp2;
+        fileNameTextField = new FileTextField();
         fileNamePanel.add(fileNameTextField);
         fileNameLabel.setLabelFor(fileNameTextField);
         fileNameTextField.addFocusListener(
@@ -262,9 +258,22 @@ public class DarkFileChooserUI extends DarkFileChooserUIBridge {
         filterComboBoxModel = createFilterComboBoxModel();
         fc.addPropertyChangeListener(filterComboBoxModel);
         filterComboBox = new JComboBox<>(filterComboBoxModel);
-        if (filterComboBox.getItemCount() == 0) {
-            filterComboBox.setEnabled(false);
+        filterComboBoxModel.addListDataListener(new ListDataListener() {
+            @Override
+            public void intervalAdded(final ListDataEvent e) {
+                filterComboBox.setEnabled(filterComboBox.getItemCount() > 1);
+            }
+
+            @Override
+            public void intervalRemoved(final ListDataEvent e) {
+                filterComboBox.setEnabled(filterComboBox.getItemCount() > 1);
             }
+
+            @Override
+            public void contentsChanged(final ListDataEvent e) {
+                filterComboBox.setEnabled(filterComboBox.getItemCount() > 1);
+            }
+        });
         filterComboBox.putClientProperty(AccessibleContext.ACCESSIBLE_DESCRIPTION_PROPERTY,
                                          filesOfTypeLabelText);
         filesOfTypeLabel.setLabelFor(filterComboBox);

src/main/java/com/weis/darklaf/ui/filechooser/DarkFileChooserUIBridge.java

@@ -52,6 +52,7 @@ import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.util.Arrays;
 import java.util.Locale;
+import java.util.Objects;
 import java.util.Vector;
 
 
@@ -475,7 +476,7 @@ public class DarkFileChooserUIBridge extends BasicFileChooserUI {
                     if (o != e.getOldValue()) {
                         cc.applyComponentOrientation(o);
                     }
-                } else if (s == "FileChooser.useShellFolder") {
+                } else if (Objects.equals(s, "FileChooser.useShellFolder")) {
                     doDirectoryChanged(e);
                 } else if (s.equals("ancestor")) {
                     if (e.getOldValue() == null && e.getNewValue() != null) {
@@ -1269,10 +1270,10 @@ public class DarkFileChooserUIBridge extends BasicFileChooserUI {
 
         public void propertyChange(final PropertyChangeEvent e) {
             String prop = e.getPropertyName();
-            if (prop == JFileChooser.CHOOSABLE_FILE_FILTER_CHANGED_PROPERTY) {
+            if (Objects.equals(prop, JFileChooser.CHOOSABLE_FILE_FILTER_CHANGED_PROPERTY)) {
                 filters = (FileFilter[]) e.getNewValue();
                 fireContentsChanged(this, -1, -1);
-            } else if (prop == JFileChooser.FILE_FILTER_CHANGED_PROPERTY) {
+            } else if (Objects.equals(prop, JFileChooser.FILE_FILTER_CHANGED_PROPERTY)) {
                 fireContentsChanged(this, -1, -1);
             }
         }
@@ -1298,7 +1299,7 @@ public class DarkFileChooserUIBridge extends BasicFileChooserUI {
                         found = true;
                     }
                 }
-                if (found == false) {
+                if (!found) {
                     getFileChooser().addChoosableFileFilter(currentFilter);
                 }
             }

src/main/java/com/weis/darklaf/ui/filechooser/DarkFilePaneUIBridge.java

@@ -486,7 +486,7 @@ public class DarkFilePaneUIBridge extends JPanel implements PropertyChangeListen
         listViewWindowsStyle = UIManager.getBoolean("FileChooser.listViewWindowsStyle");
         readOnly = UIManager.getBoolean("FileChooser.readOnly");
 
-        // TODO: On windows, get the following localized strings from the OS
+        // TUDU: On windows, get the following localized strings from the OS
 
         viewMenuLabelText =
                 UIManager.getString("FileChooser.viewMenuLabelText", l);
@@ -1797,7 +1797,7 @@ public class DarkFilePaneUIBridge extends JPanel implements PropertyChangeListen
             setHorizontalAlignment(alignment);
 
             // formatting cell text
-            // TODO: it's rather a temporary trick, to be revised
+            // TUDU: it's rather a temporary trick, to be revised
             String text;
             if (value == null) {
                 text = "";

src/main/java/com/weis/darklaf/ui/filechooser/FileTextField.java

@@ -0,0 +1,39 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2019 Jannis Weis
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.weis.darklaf.ui.filechooser;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class FileTextField extends JTextField {
+
+    public FileTextField() {
+        super(35);
+    }
+
+    public Dimension getMaximumSize() {
+        return new Dimension(Short.MAX_VALUE, super.getPreferredSize().height);
+    }
+
+}

src/main/java/com/weis/darklaf/ui/list/DarkListUI.java

@@ -15,6 +15,10 @@ import java.awt.event.MouseEvent;
  */
 public class DarkListUI extends DarkListUIBridge {
 
+    static {
+        UIManager.put("List.cellRenderer", new DarkListCellRenderer());
+    }
+
     @NotNull
     @Contract("_ -> new")
     public static ComponentUI createUI(final JComponent list) {

src/main/java/com/weis/darklaf/ui/text/DarkFormattedTextFieldUI.java

@@ -27,16 +27,86 @@ import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.NotNull;
 
 import javax.swing.*;
+import javax.swing.event.DocumentEvent;
+import javax.swing.event.DocumentListener;
 import javax.swing.plaf.ComponentUI;
+import javax.swing.text.Document;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import java.text.ParseException;
 
 /**
  * @author Jannis Weis
  */
-public class DarkFormattedTextFieldUI extends DarkTextFieldUI {
+public class DarkFormattedTextFieldUI extends DarkTextFieldUI implements PropertyChangeListener, DocumentListener {
+
+    private JFormattedTextField textField;
 
     @NotNull
     @Contract("_ -> new")
     public static ComponentUI createUI(final JComponent c) {
         return new DarkFormattedTextFieldUI();
     }
+
+    protected String getPropertyPrefix() {
+        return "FormattedTextField";
+    }
+
+    @Override
+    public void installUI(final JComponent c) {
+        textField = (JFormattedTextField) c;
+        super.installUI(c);
+    }
+
+    @Override
+    public void propertyChange(final PropertyChangeEvent evt) {
+        super.propertyChange(evt);
+        if ("document".equals(evt.getPropertyName())) {
+            var oldDoc = evt.getOldValue();
+            var newDoc = evt.getNewValue();
+            if (oldDoc instanceof Document) {
+                ((Document) oldDoc).removeDocumentListener(this);
+            }
+            if (newDoc instanceof Document) {
+                ((Document) newDoc).addDocumentListener(this);
+            }
+        }
+    }
+
+    @Override
+    protected void installListeners() {
+        super.installListeners();
+        textField.getDocument().addDocumentListener(this);
+    }
+
+    @Override
+    protected void uninstallListeners() {
+        super.uninstallListeners();
+        textField.getDocument().removeDocumentListener(this);
+    }
+
+    @Override
+    public void insertUpdate(final DocumentEvent e) {
+        update();
+    }
+
+    @Override
+    public void removeUpdate(final DocumentEvent e) {
+        update();
+    }
+
+    @Override
+    public void changedUpdate(final DocumentEvent e) {
+        update();
+    }
+
+    protected void update() {
+        if (textField == null) return;
+        try {
+            textField.getFormatter().stringToValue(textField.getText());
+            textField.putClientProperty("JTextField.hasError", false);
+        } catch (ParseException e) {
+            textField.putClientProperty("JTextField.hasError", true);
+        }
+    }
 }

src/main/java/com/weis/darklaf/ui/text/DarkTextFieldUI.java

@@ -116,7 +116,7 @@ public class DarkTextFieldUI extends DarkTextFieldUIBridge implements PropertyCh
 
     @Contract("null -> false")
     protected static boolean hasError(final Component c) {
-        return c instanceof JComponent && Boolean.TRUE.equals(((JComponent) c).getClientProperty("error"));
+        return c instanceof JComponent && Boolean.TRUE.equals(((JComponent) c).getClientProperty("JTextField.hasError"));
     }
 
     public static Color getBackgroundColor(@NotNull final JTextComponent c) {

src/main/resources/com/weis/darklaf/properties/ui/colorChooser.properties

@@ -35,7 +35,7 @@ ColorChooser.swatchesSwatchSize            = 15,15
 ColorChooser.swatchBorderColor             = %borderSecondary
 ColorChooser.swatchGridColor               = %gridLine
 ColorChooser.sliderShadow                  = %shadow
-
+ColorChooser.errorDelay                    = 600
 #Icons
 ColorChooser.pipette.icon                  = misc/pipette.svg[aware]
 ColorChooser.pipetteRollover.icon          = misc/pipette_rollover.svg[aware]

src/main/resources/com/weis/darklaf/properties/ui/list.properties

@@ -22,7 +22,6 @@
 #
 # suppress inspection "UnusedProperty" for whole file
 ListUI                                = com.weis.darklaf.ui.list.DarkListUI
-List.cellRenderer                     = com.weis.darklaf.ui.list.DarkListCellRenderer
 List.border                           = null
 List.background                       = %background
 List.focusSelectedCellHighlightBorder = com.weis.darklaf.ui.list.DarkListCellFocusBorder

src/main/resources/com/weis/darklaf/theme/darcula/darcula_defaults.properties

@@ -118,7 +118,7 @@ glowError                        = cf6767
 glowErrorLine                    = cf6767
 
 glowFocusError                   = c2413c
-glowFocusErrorLine               = c2413c
+glowFocusErrorLine               = cf6767
 
 glowWarning                      = cf6b30
 glowWarningLine                  = cf6b30

src/test/java/FileChooserDemo.java

@@ -1,6 +1,9 @@
 import com.weis.darklaf.LafManager;
 
 import javax.swing.*;
+import javax.swing.filechooser.FileFilter;
+import javax.swing.filechooser.FileNameExtensionFilter;
+import java.io.File;
 
 public final class FileChooserDemo {
 
@@ -8,6 +11,18 @@ public final class FileChooserDemo {
         SwingUtilities.invokeLater(() -> {
             LafManager.install();
             var chooser = new JFileChooser(System.getProperty("user.home"));
+            var filter = new FileNameExtensionFilter("JSON files", "json");
+            chooser.addChoosableFileFilter(new FileFilter() {
+                @Override
+                public boolean accept(final File f) {
+                    return f.isDirectory() || filter.accept(f);
+                }
+
+                @Override
+                public String getDescription() {
+                    return filter.getDescription();
+                }
+            });
             chooser.setMultiSelectionEnabled(true);
             var frame = new JFrame();
             frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);