Implemented code review comments: YELLOW

Issue-Ref: 3536
Signed-off-by: Sudeep Kanav <kanav@fortiss.org>

org.fortiss.tooling.base.ui/src/org/fortiss/tooling/base/ui/editor/.ratings

@@ -8,5 +8,6 @@ DiagramKeyHandler.java cfd15ac8f9fc933739cef5e7039960e19826d1ce GREEN
 FormsEditorBase.java 4046d340913d951340084ae7240d79f8e75cb8d4 GREEN
 GEFEditorBase.java e668f596f45f07215994cbbd3929a9438331718f GREEN
 SourceEditorBase.java 347d6b45d577abd7e23a7234904be118e82469f1 YELLOW
+SourceEditorConfigurationBase.java db3898fe1cace33aab0dd83d9711205c235c9861 YELLOW
 SourceEditorUndoRedo.java 5f5d1b05c8b1287a9e37d866eda3474b6dcbd014 YELLOW
 TreeViewerEditorBase.java 1c59689ff57c4f3cc180d85f13021fc03461ecb0 GREEN

org.fortiss.tooling.base.ui/src/org/fortiss/tooling/base/ui/editor/SourceEditorConfigurationBase.java

+/*-------------------------------------------------------------------------+
+| Copyright 2012 fortiss 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                                  |
+|                                                                          |
+|    http://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 org.fortiss.tooling.base.ui.editor;
+
+import static org.eclipse.jface.text.IDocument.DEFAULT_CONTENT_TYPE;
+import static org.eclipse.wb.swt.SWTResourceManager.getColor;
+
+import java.util.List;
+
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.jface.text.presentation.IPresentationReconciler;
+import org.eclipse.jface.text.presentation.PresentationReconciler;
+import org.eclipse.jface.text.rules.DefaultDamagerRepairer;
+import org.eclipse.jface.text.rules.IRule;
+import org.eclipse.jface.text.rules.IToken;
+import org.eclipse.jface.text.rules.ITokenScanner;
+import org.eclipse.jface.text.rules.IWordDetector;
+import org.eclipse.jface.text.rules.RuleBasedScanner;
+import org.eclipse.jface.text.rules.WordRule;
+import org.eclipse.jface.text.source.IAnnotationHover;
+import org.eclipse.jface.text.source.ISourceViewer;
+import org.eclipse.jface.text.source.SourceViewerConfiguration;
+import org.eclipse.swt.graphics.Color;
+import org.fortiss.tooling.base.ui.editor.SourceEditorBase;
+import org.fortiss.tooling.base.ui.editor.annotations.AnnotationHover;
+
+/**
+ * Class responsible for proper configuration of the {@link SourceEditorBase}.
+ * 
+ * @author doebber
+ */
+public abstract class SourceEditorConfigurationBase<T extends EObject>
+		extends SourceViewerConfiguration {
+
+	/** Stores the actual editor object. */
+	protected SourceEditorBase<T> editor;
+
+	/** Constructor. */
+	public SourceEditorConfigurationBase(SourceEditorBase<T> editor) {
+		this.editor = editor;
+	}
+
+	/** Color constant used to display code dark red. */
+	protected Color DARK_RED = getColor(128, 0, 0);
+
+	/** Color constant used to display code dark blue. */
+	protected Color DARK_BLUE = getColor(0, 0, 128);
+
+	/** Detector used to create the scanners. */
+	protected IWordDetector detector = new IWordDetector() {
+		/** {@inheritDoc} */
+		@Override
+		public boolean isWordStart(char c) {
+			return Character.isLetterOrDigit(c);
+		}
+
+		/** {@inheritDoc} */
+		@Override
+		public boolean isWordPart(char c) {
+			return Character.isLetterOrDigit(c) || c == '_';
+		}
+	};
+
+	/** {@inheritDoc} */
+	@Override
+	public IPresentationReconciler getPresentationReconciler(ISourceViewer sourceViewer) {
+		PresentationReconciler reconciler = new PresentationReconciler();
+
+		DefaultDamagerRepairer dr = new DefaultDamagerRepairer(getScanner());
+		reconciler.setDamager(dr, DEFAULT_CONTENT_TYPE);
+		reconciler.setRepairer(dr, DEFAULT_CONTENT_TYPE);
+
+		return reconciler;
+	}
+
+	/** Returns the scanner. */
+	private ITokenScanner getScanner() {
+		return getScannerForSyntaxHighlighting();
+	}
+
+	/** Returns the annotation hover. */
+	@Override
+	public IAnnotationHover getAnnotationHover(ISourceViewer sourceViewer) {
+		return new AnnotationHover(editor.getAnnotationModel());
+	}
+
+	/** Returns the rule based scanner. */
+	private RuleBasedScanner getScannerForSyntaxHighlighting() {
+		List<WordRule> rules = getCommonRules();
+		rules.add(getRuleSpecificToEditor());
+		RuleBasedScanner scanner = new RuleBasedScanner();
+		scanner.setRules(rules.toArray(new IRule[0]));
+		return scanner;
+	}
+
+	/** Returns a list of rules common for the syntax highlighting. */
+	abstract protected List<WordRule> getCommonRules();
+
+	/** Returns a rule specific to the editor. */
+	abstract protected WordRule getRuleSpecificToEditor();
+
+	/** Adds the words to the rule with the given token. */
+	protected void addWordsToRule(List<String> words, WordRule rule, IToken token) {
+		for(String word : words) {
+			rule.addWord(word, token);
+		}
+	}
+}