Theme Editor: re-implemented support loading/resolving base properties from other editors in opened directory

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

@@ -23,7 +23,6 @@ import java.awt.Window;
 import java.io.File;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
-import java.util.List;
 import javax.swing.BorderFactory;
 import javax.swing.InputMap;
 import javax.swing.JComponent;
@@ -49,6 +48,7 @@ import org.fife.ui.rsyntaxtextarea.TokenTypes;
 import org.fife.ui.rtextarea.Gutter;
 import org.fife.ui.rtextarea.RTextArea;
 import org.fife.ui.rtextarea.RTextScrollPane;
+import com.formdev.flatlaf.util.StringUtils;
 import com.formdev.flatlaf.util.UIScale;
 
 /**
@@ -168,8 +168,9 @@ class FlatThemeEditorPane
 		return textArea.requestFocusInWindow();
 	}
 
-	void setBaseFiles( List<File> baseFiles ) {
-		textArea.propertiesSupport.setBaseFiles( baseFiles );
+	void initBasePropertyProvider( FlatThemePropertiesBaseManager propertiesBaseManager ) {
+		String name = StringUtils.removeTrailing( file.getName(), ".properties" );
+		textArea.propertiesSupport.setBasePropertyProvider( propertiesBaseManager.create( name, textArea.propertiesSupport ) );
 	}
 
 	File getFile() {

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

@@ -68,6 +68,8 @@ public class FlatThemeFileEditor
 	private Preferences state;
 	private boolean inLoadDirectory;
 
+	private final FlatThemePropertiesBaseManager propertiesBaseManager = new FlatThemePropertiesBaseManager();
+
 	public static void main( String[] args ) {
 		File dir = (args.length > 0)
 			? new File( args[0] )
@@ -187,6 +189,7 @@ public class FlatThemeFileEditor
 			return;
 
 		this.dir = dir;
+		propertiesBaseManager.clear();
 
 		inLoadDirectory = true;
 
@@ -266,6 +269,8 @@ public class FlatThemeFileEditor
 			ex.printStackTrace(); // TODO
 		}
 
+		themeEditorPane.initBasePropertyProvider( propertiesBaseManager );
+
 		Supplier<String> titleFun = () -> {
 			return (themeEditorPane.isDirty() ? "* " : "")
 				+ StringUtils.removeTrailing( themeEditorPane.getFile().getName(), ".properties" );

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

@@ -0,0 +1,160 @@
+/*
+ * Copyright 2021 FormDev Software GmbH
+ *
+ * Licensed 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
+ *
+ *     https://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 com.formdev.flatlaf.themeeditor;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+
+/**
+ * @author Karl Tauber
+ */
+class FlatThemePropertiesBaseManager
+{
+	private final Map<String, MyBasePropertyProvider> providers = new HashMap<>();
+
+	FlatThemePropertiesSupport.BasePropertyProvider create( String name, FlatThemePropertiesSupport propertiesSupport ) {
+		MyBasePropertyProvider provider = new MyBasePropertyProvider( name, propertiesSupport );
+		providers.put( name, provider );
+		return provider;
+	}
+
+	void clear() {
+		providers.clear();
+	}
+
+	private static List<String> baseFiles( String name, String baseTheme ) {
+		ArrayList<String> result = new ArrayList<>();
+
+		// core themes
+		switch( name ) {
+			case "FlatLaf":
+				result.add( "FlatLightLaf" );
+				break;
+
+			case "FlatLightLaf":
+			case "FlatDarkLaf":
+				result.add( "FlatLaf" );
+				break;
+
+			case "FlatIntelliJLaf":
+				result.add( "FlatLightLaf" );
+				result.add( "FlatLaf" );
+				break;
+
+			case "FlatDarculaLaf":
+				result.add( "FlatDarkLaf" );
+				result.add( "FlatLaf" );
+				break;
+		}
+
+		// custom themes based on core themes
+		if( result.isEmpty() ) {
+			if( baseTheme == null )
+				baseTheme = "light";
+
+			switch( baseTheme ) {
+				default:
+				case "light":
+					result.add( "FlatLightLaf" );
+					result.add( "FlatLaf" );
+					break;
+
+				case "dark":
+					result.add( "FlatDarkLaf" );
+					result.add( "FlatLaf" );
+					break;
+
+				case "intellij":
+					result.add( "FlatIntelliJLaf" );
+					result.add( "FlatLightLaf" );
+					result.add( "FlatLaf" );
+					break;
+
+				case "darcula":
+					result.add( "FlatDarculaLaf" );
+					result.add( "FlatLightLaf" );
+					result.add( "FlatLaf" );
+					break;
+			}
+		}
+
+		return result;
+	}
+
+	//---- class MyBasePropertyProvider ---------------------------------------
+
+	private class MyBasePropertyProvider
+		implements FlatThemePropertiesSupport.BasePropertyProvider
+	{
+		private final String name;
+		private final FlatThemePropertiesSupport propertiesSupport;
+
+		private List<String> baseFiles;
+		private String lastBaseTheme;
+
+		MyBasePropertyProvider( String name, FlatThemePropertiesSupport propertiesSupport ) {
+			this.name = name;
+			this.propertiesSupport = propertiesSupport;
+		}
+
+		@Override
+		public String getProperty( String key, String baseTheme ) {
+			updateBaseFiles( baseTheme );
+
+			for( String baseFile : baseFiles ) {
+				String value = getPropertyFromBase( baseFile, key );
+				if( value != null )
+					return value;
+			}
+
+			return null;
+		}
+
+		private String getPropertyFromBase( String baseFile, String key ) {
+			MyBasePropertyProvider provider = providers.get( baseFile );
+			return (provider != null)
+				? provider.propertiesSupport.getProperties().getProperty( key )
+				: null;
+		}
+
+		private void updateBaseFiles( String baseTheme ) {
+			if( baseFiles != null && Objects.equals( baseTheme, lastBaseTheme ) )
+				return;
+
+			baseFiles = baseFiles( name, baseTheme );
+			lastBaseTheme = baseTheme;
+		}
+
+		@Override
+		public void addAllKeys( Set<String> allKeys, String baseTheme ) {
+			updateBaseFiles( baseTheme );
+
+			for( String baseFile : baseFiles ) {
+				MyBasePropertyProvider provider = providers.get( baseFile );
+				if( provider == null )
+					continue;
+
+				for( Object key : provider.propertiesSupport.getProperties().keySet() )
+					allKeys.add( (String) key );
+			}
+		}
+	}
+}

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

@@ -17,14 +17,10 @@
 package com.formdev.flatlaf.themeeditor;
 
 import java.awt.Color;
-import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
-import java.io.InputStream;
 import java.io.StringReader;
 import java.util.HashMap;
 import java.util.HashSet;
-import java.util.List;
 import java.util.Map;
 import java.util.Properties;
 import java.util.Set;
@@ -45,14 +41,16 @@ class FlatThemePropertiesSupport
 	private final FlatSyntaxTextArea textArea;
 	private final Function<String, String> propertiesGetter;
 	private final Function<String, String> resolver;
+	private BasePropertyProvider basePropertyProvider;
+
+	// caches
 	private Properties propertiesCache;
 	private final Map<Integer, Object> parsedValueCache = new HashMap<>();
-
-	private File[] baseFiles;
-	private long[] baseFilesLastModified;
-	private Properties[] basePropertiesCache;
-
 	private Set<String> allKeysCache;
+	private String baseTheme;
+
+	private static long globalCacheInvalidationCounter;
+	private long cacheInvalidationCounter;
 
 	FlatThemePropertiesSupport( FlatSyntaxTextArea textArea ) {
 		this.textArea = textArea;
@@ -67,12 +65,8 @@ class FlatThemePropertiesSupport
 		textArea.getDocument().addDocumentListener( this );
 	}
 
-	void setBaseFiles( List<File> baseFiles ) {
-		int size = baseFiles.size();
-		this.baseFiles = baseFiles.toArray( new File[size] );
-
-		baseFilesLastModified = new long[size];
-		basePropertiesCache = new Properties[size];
+	void setBasePropertyProvider( BasePropertyProvider basePropertyProvider ) {
+		this.basePropertyProvider = basePropertyProvider;
 	}
 
 	private String resolveValue( String value ) {
@@ -80,6 +74,8 @@ class FlatThemePropertiesSupport
 	}
 
 	Object getParsedValueAtLine( int line ) {
+		autoClearCache();
+
 		Integer lineKey = line;
 		Object parsedValue = parsedValueCache.get( lineKey );
 		if( parsedValue != null )
@@ -96,7 +92,7 @@ class FlatThemePropertiesSupport
 			parsedValueCache.put( lineKey, parsedValue );
 			return parsedValue;
 		} catch( Exception ex ) {
-			System.out.println( ex.getMessage() ); //TODO
+			System.out.println( textArea.getFileName() + ": " + ex.getMessage() ); //TODO
 			parsedValueCache.put( lineKey, ex );
 			return null;
 		}
@@ -128,20 +124,14 @@ class FlatThemePropertiesSupport
 		if( value != null )
 			return value;
 
-		if( baseFiles == null )
+		if( basePropertyProvider == null )
 			return null;
 
 		// look in base properties files
-		for( int i = 0; i < baseFiles.length; i++ ) {
-			value = getBaseProperties( i ).getProperty( key );
-			if( value != null )
-				return value;
-		}
-
-		return null;
+		return basePropertyProvider.getProperty( key, getBaseTheme() );
 	}
 
-	private Properties getProperties() {
+	Properties getProperties() {
 		if( propertiesCache != null )
 			return propertiesCache;
 
@@ -154,23 +144,9 @@ class FlatThemePropertiesSupport
 		return propertiesCache;
 	}
 
-	private Properties getBaseProperties( int index ) {
-		long lastModified = baseFiles[index].lastModified();
-		if( baseFilesLastModified[index] != lastModified || basePropertiesCache[index] == null ) {
-			// (re)load base properties file
-			baseFilesLastModified[index] = lastModified;
-			basePropertiesCache[index] = new Properties();
-			try( InputStream in = new FileInputStream( baseFiles[index] ) ) {
-				basePropertiesCache[index].load( in );
-			} catch( IOException ex ) {
-				ex.printStackTrace(); //TODO
-			}
-		}
-
-		return basePropertiesCache[index];
-	}
-
 	Set<String> getAllKeys() {
+		autoClearCache();
+
 		if( allKeysCache != null )
 			return allKeysCache;
 
@@ -179,21 +155,39 @@ class FlatThemePropertiesSupport
 		for( Object key : getProperties().keySet() )
 			allKeysCache.add( (String) key );
 
-		if( baseFiles == null )
-			return allKeysCache;
-
-		for( int i = 0; i < baseFiles.length; i++ ) {
-			for( Object key : getBaseProperties( i ).keySet() )
-				allKeysCache.add( (String) key );
-		}
+		// look in base properties files
+		if( basePropertyProvider != null )
+			basePropertyProvider.addAllKeys( allKeysCache, getBaseTheme() );
 
 		return allKeysCache;
 	}
 
+	private String getBaseTheme() {
+		if( baseTheme == null )
+			baseTheme = getProperties().getProperty( "@baseTheme", "light" );
+		return baseTheme;
+	}
+
 	private void clearCache() {
 		propertiesCache = null;
 		parsedValueCache.clear();
 		allKeysCache = null;
+		baseTheme = null;
+
+		// increase global cache invalidation counter to allow auto-clear caches
+		globalCacheInvalidationCounter++;
+		cacheInvalidationCounter = globalCacheInvalidationCounter;
+	}
+
+	/**
+	 * Clear caches that may depend on other editors if cache of another editor was invalidated.
+	 */
+	private void autoClearCache() {
+		if( cacheInvalidationCounter == globalCacheInvalidationCounter )
+			return;
+
+		parsedValueCache.clear();
+		allKeysCache = null;
 	}
 
 	//---- interface DocumentListener ----
@@ -233,4 +227,11 @@ class FlatThemePropertiesSupport
 			this.value = value;
 		}
 	}
+
+	//---- interface BasePropertyProvider -------------------------------------
+
+	interface BasePropertyProvider {
+		String getProperty( String key, String baseTheme );
+		void addAllKeys( Set<String> allKeys, String baseTheme );
+	}
 }