X-Git-Url: http://secure.phpeclipse.com

diff --git a/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/text/CssReconcileStep.java b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/text/CssReconcileStep.java
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index 0000000..d5cbc26
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+++ b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/text/CssReconcileStep.java
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+/*
+ * Copyright (c) 2003-2004 Christopher Lenz and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     Christopher Lenz - initial API and implementation
+ * 
+ * $Id: CssReconcileStep.java,v 1.1 2004-09-02 18:11:48 jsurfer Exp $
+ */
+
+package net.sourceforge.phpeclipse.css.ui.internal.text;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import net.sourceforge.phpeclipse.css.core.model.IStyleSheet;
+import net.sourceforge.phpeclipse.css.core.parser.IProblem;
+import net.sourceforge.phpeclipse.css.core.parser.IProblemCollector;
+import net.sourceforge.phpeclipse.css.core.parser.LexicalErrorException;
+import net.sourceforge.phpeclipse.css.core.parser.SyntaxErrorException;
+import net.sourceforge.phpeclipse.css.ui.internal.CssDocumentProvider;
+
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.Position;
+import org.eclipse.jface.text.reconciler.AbstractReconcileStep;
+import org.eclipse.jface.text.reconciler.DirtyRegion;
+import org.eclipse.jface.text.reconciler.IReconcilableModel;
+import org.eclipse.jface.text.reconciler.IReconcileResult;
+import org.eclipse.jface.text.reconciler.IReconcileStep;
+import org.eclipse.jface.text.source.Annotation;
+import org.eclipse.ui.texteditor.IDocumentProvider;
+import org.eclipse.ui.texteditor.ITextEditor;
+
+/**
+ * Implementation of a reconcile step for building the CSS parse tree on changes
+ * to the editor content.
+ */
+public class CssReconcileStep extends AbstractReconcileStep {
+
+	// Inner Classes -----------------------------------------------------------
+
+	/**
+	 * Adapts an <code>IStyleSheet</code> to the <code>IReconcilableModel</code>
+	 * interface.
+	 */
+	private class StyleSheetAdapter implements IReconcilableModel {
+
+		private IStyleSheet styleSheet;
+
+		public StyleSheetAdapter(IStyleSheet styleSheet) {
+			this.styleSheet = styleSheet;
+		}
+
+		public IStyleSheet getStyleSheet() {
+			return styleSheet;
+		}
+
+	}
+
+	/**
+	 * Implementation of the problem collector interface for creating problem
+	 * annotations when there are problems parsing the style sheet.
+	 */
+	private class ProblemCollector implements IProblemCollector {
+
+		/**
+		 * The list of problems added to this collector.
+		 */
+		private List collectedProblems = new ArrayList();
+
+		/**
+		 * @see IProblemCollector#addProblem(IProblem)
+		 */
+		public void addProblem(IProblem problem) {
+			collectedProblems.add(problem);
+		}
+
+		/**
+		 * Returns the list of problems collected while the CSS source has been
+		 * parsed, in the order they were reported. The list returned is
+		 * immutable.
+		 * 
+		 * @return the list of collected problems (of type {@link IProblem})
+		 */
+		public List getProblems() {
+			return Collections.unmodifiableList(collectedProblems);
+		}
+
+	}
+
+	/**
+	 * Adapter that adapts an {@link IProblem} to an {@link Annotation}.
+	 */
+	private class ProblemAdapter extends AnnotationAdapter {
+
+		private IProblem problem;
+		private Position position;
+
+		ProblemAdapter(IProblem problem)  {
+			this.problem = problem;
+		}
+
+		public Position getPosition()  {
+			if (position == null) {
+				position = createPositionFromProblem();
+			}
+			return position;
+		}
+
+		public Annotation createAnnotation() {
+			int start = problem.getSourceStart();
+			if (start < 0) {
+				return null;
+			}
+			int length = problem.getSourceEnd() - problem.getSourceStart() + 1;
+			if (length < 0) {
+				return null;
+			}
+			String type = null;
+			if (problem.isWarning()) {
+				type = "org.eclipse.ui.workbench.texteditor.warning"; //$NON-NLS-1$
+			} else if (problem.isError()) {
+				type = "org.eclipse.ui.workbench.texteditor.error"; //$NON-NLS-1$
+			}
+			return new Annotation(type, false, problem.getMessage());
+		}
+
+		private Position createPositionFromProblem() {
+			int start = problem.getSourceStart();
+			if (start < 0) {
+				return null;
+			}
+			int length = problem.getSourceEnd() - problem.getSourceStart() + 1;
+			if (length < 0) {
+				return null;
+			}
+			return new Position(start, length);
+		}
+
+	}
+
+	// Instance Variables ------------------------------------------------------
+
+	private ITextEditor editor;
+
+	private StyleSheetAdapter styleSheetAdapter;
+
+	// Constructors ------------------------------------------------------------
+
+	/**
+	 * Default constructor.
+	 */
+	public CssReconcileStep(ITextEditor editor) {
+		this.editor = editor;
+		styleSheetAdapter = new StyleSheetAdapter(getStyleSheet());
+	}
+
+	/**
+	 * Constructor.
+	 * 
+	 * @param step the step to add to the pipe
+	 * @param editor the associated text editor
+	 */
+	public CssReconcileStep(IReconcileStep step, ITextEditor editor) {
+		super(step);
+		this.editor = editor;
+		styleSheetAdapter = new StyleSheetAdapter(getStyleSheet());
+	}
+
+	// AbstractReconcileStep Implementation ------------------------------------
+
+	/*
+	 * @see AbstractReconcileStep#reconcileModel(DirtyRegion, IRegion)
+	 */
+	protected IReconcileResult[] reconcileModel(DirtyRegion dirtyRegion,
+		IRegion subRegion) {
+		IStyleSheet styleSheet = styleSheetAdapter.getStyleSheet();
+		ProblemCollector problemCollector = new ProblemCollector();
+		try {
+			styleSheet.reconcile(problemCollector);
+		} catch (LexicalErrorException e) {
+			// Already reported to the problem collector  
+		} catch (SyntaxErrorException e) {
+			// Already reported to the problem collector  
+		}
+		List problems = problemCollector.getProblems();
+		IReconcileResult[] retVal = new IReconcileResult[problems.size()];
+		for (int i = 0; i < problems.size(); i++) {
+			IProblem problem = (IProblem) problems.get(i);
+			retVal[i] = new ProblemAdapter(problem);
+		}
+		return retVal;
+	}
+
+	/*
+	 * @see AbstractReconcileStep#getModel()
+	 */
+	public IReconcilableModel getModel() {
+		return styleSheetAdapter;
+	}
+
+	// Private Methods Implementation ------------------------------------------
+
+	/**
+	 * Retrieve the style sheet associated with the editor input.
+	 */
+	private IStyleSheet getStyleSheet() {
+		IDocumentProvider documentProvider = editor.getDocumentProvider();
+		if (documentProvider instanceof CssDocumentProvider) {
+			CssDocumentProvider cssDocumentProvider = (CssDocumentProvider)
+				documentProvider;
+			return cssDocumentProvider.getStyleSheet(editor.getEditorInput());
+		}
+		return null;
+	}
+
+}