Theme Editor: added "Insert Color" action to "Edit" menu that opens a color chooser dialog and inserts/edits a color at caret position

flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatSyntaxTextArea.java

@@ -34,6 +34,7 @@ import org.fife.ui.rsyntaxtextarea.Token;
 import org.fife.ui.rtextarea.RTextArea;
 import org.fife.ui.rtextarea.RTextAreaUI;
 import com.formdev.flatlaf.UIDefaultsLoaderAccessor;
+import com.formdev.flatlaf.themeeditor.FlatSyntaxTextAreaActions.InsertColorAction;
 import com.formdev.flatlaf.themeeditor.FlatSyntaxTextAreaActions.DuplicateLinesAction;
 import com.formdev.flatlaf.themeeditor.FlatSyntaxTextAreaActions.IncrementNumberAction;
 
@@ -64,6 +65,7 @@ class FlatSyntaxTextArea
 		actionMap.put( FlatSyntaxTextAreaActions.duplicateLinesDownAction, new DuplicateLinesAction( FlatSyntaxTextAreaActions.duplicateLinesDownAction, false ) );
 		actionMap.put( FlatSyntaxTextAreaActions.incrementNumberAction, new IncrementNumberAction( FlatSyntaxTextAreaActions.incrementNumberAction, true ) );
 		actionMap.put( FlatSyntaxTextAreaActions.decrementNumberAction, new IncrementNumberAction( FlatSyntaxTextAreaActions.decrementNumberAction, false ) );
+		actionMap.put( FlatSyntaxTextAreaActions.insertColorAction, new InsertColorAction( FlatSyntaxTextAreaActions.insertColorAction ) );
 
 		// add editor key strokes
 		InputMap inputMap = getInputMap();

flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatSyntaxTextAreaActions.java

@@ -16,10 +16,19 @@
 
 package com.formdev.flatlaf.themeeditor;
 
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Window;
 import java.awt.event.ActionEvent;
+import java.util.prefs.Preferences;
+import javax.swing.JColorChooser;
+import javax.swing.JDialog;
+import javax.swing.JTabbedPane;
+import javax.swing.SwingUtilities;
 import javax.swing.text.BadLocationException;
 import org.fife.ui.rtextarea.RTextArea;
 import org.fife.ui.rtextarea.RecordableTextAction;
+import com.formdev.flatlaf.UIDefaultsLoaderAccessor;
 
 /**
  * @author Karl Tauber
@@ -30,6 +39,70 @@ class FlatSyntaxTextAreaActions
 	static final String duplicateLinesDownAction = "FlatLaf.DuplicateLinesDownAction";
 	static final String incrementNumberAction = "FlatLaf.IncrementNumberAction";
 	static final String decrementNumberAction = "FlatLaf.DecrementNumberAction";
+	static final String insertColorAction = "FlatLaf.InsertColorAction";
+
+	static int[] findColorAt( RTextArea textArea, int position ) {
+		try {
+			int start = position;
+			int end = position;
+
+			// find first '#' or hex digit
+			for( int i = position - 1; i >= 0; i-- ) {
+				char ch = textArea.getText( i, 1 ).charAt( 0 );
+				if( ch != '#' && !isHexDigit( ch ) )
+					break;
+				start = i;
+			}
+
+			// find last hex digit
+			int length = textArea.getDocument().getLength();
+			for( int i = position; i < length; i++ ) {
+				if( !isHexDigit( textArea.getText( i, 1 ).charAt( 0 ) ) )
+					break;
+				end = i + 1;
+			}
+
+			// check for valid length (#RGB, #RGBA, #RRGGBB or #RRGGBBAA)
+			int len = end - start;
+			if( len != 4 && len != 5 && len != 7 && len != 9 )
+				return null;
+
+			// check whether starts with '#'
+			if( textArea.getText( start, 1 ).charAt( 0 ) != '#' )
+				return null;
+
+			return new int[] { start, end - start };
+		} catch( BadLocationException | IndexOutOfBoundsException | NumberFormatException ex ) {
+			ex.printStackTrace();
+			return null;
+		}
+	}
+
+	static boolean isHexDigit( char ch ) {
+		return Character.isDigit( ch ) || (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F');
+	}
+
+	static String colorToString( Color color ) {
+		int rgb = color.getRGB();
+		int alpha = color.getAlpha();
+		String format;
+		if( (rgb & 0xf) == ((rgb >> 4) & 0xf) &&
+			((rgb >> 8) & 0xf) == ((rgb >> 12) & 0xf) &&
+			((rgb >> 16) & 0xf) == ((rgb >> 20) & 0xf) &&
+			((rgb >> 24) & 0xf) == ((rgb >> 28) & 0xf) )
+		{
+			// short format (#RGB or #RGBA)
+			format = (alpha != 255) ? "#%03x%01x" : "#%03x";
+			rgb = (rgb & 0xf) | ((rgb >> 4) & 0xf0) | ((rgb >> 8) & 0xf00);
+			alpha &= 0xf;
+		} else {
+			// long format (#RRGGBB or #RRGGBBAA)
+			format = (alpha != 255) ? "#%06x%02x" : "#%06x";
+			rgb &= 0xffffff;
+		}
+
+		return String.format( format, rgb, alpha );
+	}
 
 	//---- class DuplicateLinesAction -----------------------------------------
 
@@ -143,33 +216,12 @@ class FlatSyntaxTextAreaActions
 		private boolean incrementRGBColor( RTextArea textArea ) {
 			try {
 				int caretPosition = textArea.getCaretPosition();
-				int start = caretPosition;
-				int end = caretPosition;
-
-				// find first '#' or hex digit
-				for( int i = caretPosition - 1; i >= 0; i-- ) {
-					char ch = textArea.getText( i, 1 ).charAt( 0 );
-					if( ch != '#' && !isHexDigit( ch ) )
-						break;
-					start = i;
-				}
-
-				// find last hex digit
-				int length = textArea.getDocument().getLength();
-				for( int i = caretPosition; i < length; i++ ) {
-					if( !isHexDigit( textArea.getText( i, 1 ).charAt( 0 ) ) )
-						break;
-					end = i + 1;
-				}
-
-				// check for valid length (#RGB, #RGBA, #RRGGBB or #RRGGBBAA)
-				int len = end - start;
-				if( len != 4 && len != 5 && len != 7 && len != 9 )
+				int[] result = findColorAt( textArea, caretPosition );
+				if( result == null )
 					return false;
 
-				// check whether starts with '#'
-				if( textArea.getText( start, 1 ).charAt( 0 ) != '#' )
-					return false;
+				int start = result[0];
+				int len = result[1];
 
 				// find start of color part that should be changed (red, green, blue or alpha)
 				int start2;
@@ -212,8 +264,66 @@ class FlatSyntaxTextAreaActions
 			}
 		}
 
-		private boolean isHexDigit( char ch ) {
-			return Character.isDigit( ch ) || (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F');
+		@Override
+		public String getMacroID() {
+			return getName();
+		}
+	}
+
+	//---- class InsertColorAction --------------------------------------------
+
+	static class InsertColorAction
+		extends RecordableTextAction
+	{
+		private static final String KEY_SELECTED_TAB = "colorchooser.selectedTab";
+
+		InsertColorAction( String name ) {
+			super( name );
+		}
+
+		@Override
+		public void actionPerformedImpl( ActionEvent e, RTextArea textArea ) {
+			try {
+				// find current color at caret
+				Color currentColor = Color.white;
+				int caretPosition = textArea.getCaretPosition();
+				int start;
+				int len;
+				int[] result = findColorAt( textArea, caretPosition );
+				if( result != null ) {
+					start = result[0];
+					len = result[1];
+
+					String str = textArea.getText( start, len );
+					int rgb = UIDefaultsLoaderAccessor.parseColorRGBA( str );
+					currentColor = new Color( rgb, true );
+				} else {
+					start = caretPosition;
+					len = 0;
+				}
+
+				// create color chooser
+				JColorChooser chooser = new JColorChooser( currentColor );
+				Component tabbedPane = chooser.getComponent( 0 );
+				Preferences state = Preferences.userRoot().node( FlatThemeFileEditor.PREFS_ROOT_PATH );
+				int selectedTab = state.getInt( KEY_SELECTED_TAB, -1 );
+				if( tabbedPane instanceof JTabbedPane && selectedTab >= 0 && selectedTab < ((JTabbedPane)tabbedPane).getTabCount() )
+					((JTabbedPane)tabbedPane).setSelectedIndex( selectedTab );
+
+				// show color chooser dialog
+				Window window = SwingUtilities.windowForComponent( textArea );
+				JDialog dialog = JColorChooser.createDialog( window, "Insert Color", true, chooser, e2 -> {
+					// update editor
+					textArea.replaceRange( colorToString( chooser.getColor() ), start, start + len );
+
+					// remember selected tab
+					if( tabbedPane instanceof JTabbedPane )
+						state.putInt( KEY_SELECTED_TAB, ((JTabbedPane)tabbedPane).getSelectedIndex() );
+				}, null );
+				dialog.setVisible( true );
+			} catch( BadLocationException | IndexOutOfBoundsException | NumberFormatException ex ) {
+				ex.printStackTrace();
+			}
 		}
 
 		@Override

flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatThemeEditorPane.java

@@ -20,9 +20,11 @@ import java.awt.BorderLayout;
 import java.awt.Color;
 import java.awt.Font;
 import java.awt.Window;
+import java.awt.event.ActionEvent;
 import java.io.File;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
+import javax.swing.Action;
 import javax.swing.BorderFactory;
 import javax.swing.InputMap;
 import javax.swing.JComponent;
@@ -290,6 +292,12 @@ class FlatThemeEditorPane
 		revalidate();
 	}
 
+	void notifyTextAreaAction( String actionKey ) {
+		Action action = textArea.getActionMap().get( actionKey );
+		if( action != null && action.isEnabled() )
+			action.actionPerformed( new ActionEvent( textArea, ActionEvent.ACTION_PERFORMED, null ) );
+	}
+
 	//---- class FlatSyntaxScheme ---------------------------------------------
 
 	private static class FlatSyntaxScheme

flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatThemeFileEditor.java

@@ -32,6 +32,7 @@ import java.util.Arrays;
 import java.util.Comparator;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Locale;
 import java.util.Objects;
 import java.util.function.Supplier;
 import java.util.prefs.Preferences;
@@ -56,7 +57,7 @@ import com.formdev.flatlaf.util.UIScale;
 public class FlatThemeFileEditor
 	extends JFrame
 {
-	private static final String PREFS_ROOT_PATH = "/flatlaf-theme-editor";
+	static final String PREFS_ROOT_PATH = "/flatlaf-theme-editor";
 	private static final String KEY_DIRECTORIES = "directories";
 	private static final String KEY_RECENT_DIRECTORY = "recentDirectory";
 	private static final String KEY_RECENT_FILE = "recentFile";
@@ -78,6 +79,9 @@ public class FlatThemeFileEditor
 			? new File( args[0] )
 			: null;
 
+		Locale.setDefault( Locale.ENGLISH );
+		System.setProperty( "user.language", "en" );
+
 		SwingUtilities.invokeLater( () -> {
 			FlatLaf.registerCustomDefaultsSource( "com.formdev.flatlaf.themeeditor" );
 
@@ -375,6 +379,12 @@ public class FlatThemeFileEditor
 			themeEditorPane.showFindReplaceBar();
 	}
 
+	private void insertColor() {
+		FlatThemeEditorPane themeEditorPane = (FlatThemeEditorPane) tabbedPane.getSelectedComponent();
+		if( themeEditorPane != null )
+			themeEditorPane.notifyTextAreaAction( FlatSyntaxTextAreaActions.insertColorAction );
+	}
+
 	private void showHidePreview() {
 		boolean show = previewMenuItem.isSelected();
 		for( FlatThemeEditorPane themeEditorPane : getThemeEditorPanes() )
@@ -562,6 +572,7 @@ public class FlatThemeFileEditor
 		exitMenuItem = new JMenuItem();
 		editMenu = new JMenu();
 		findMenuItem = new JMenuItem();
+		insertColorMenuItem = new JMenuItem();
 		viewMenu = new JMenu();
 		previewMenuItem = new JCheckBoxMenuItem();
 		lightLafMenuItem = new JRadioButtonMenuItem();
@@ -643,6 +654,13 @@ public class FlatThemeFileEditor
 				findMenuItem.setMnemonic('F');
 				findMenuItem.addActionListener(e -> find());
 				editMenu.add(findMenuItem);
+				editMenu.addSeparator();
+
+				//---- insertColorMenuItem ----
+				insertColorMenuItem.setText("Insert Color");
+				insertColorMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_G, KeyEvent.CTRL_DOWN_MASK));
+				insertColorMenuItem.addActionListener(e -> insertColor());
+				editMenu.add(insertColorMenuItem);
 			}
 			menuBar.add(editMenu);
 
@@ -786,6 +804,7 @@ public class FlatThemeFileEditor
 	private JMenuItem exitMenuItem;
 	private JMenu editMenu;
 	private JMenuItem findMenuItem;
+	private JMenuItem insertColorMenuItem;
 	private JMenu viewMenu;
 	private JCheckBoxMenuItem previewMenuItem;
 	private JRadioButtonMenuItem lightLafMenuItem;

flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatThemeFileEditor.jfd

@@ -94,6 +94,15 @@ new FormModel {
 						"mnemonic": 70
 						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "find", false ) )
 					} )
+					add( new FormComponent( "javax.swing.JPopupMenu$Separator" ) {
+						name: "separator5"
+					} )
+					add( new FormComponent( "javax.swing.JMenuItem" ) {
+						name: "insertColorMenuItem"
+						"text": "Insert Color"
+						"accelerator": static javax.swing.KeyStroke getKeyStroke( 71, 130, false )
+						addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "insertColor", false ) )
+					} )
 				} )
 				add( new FormContainer( "javax.swing.JMenu", new FormLayoutManager( class javax.swing.JMenu ) ) {
 					name: "viewMenu"