| /******************************************************************************* |
| * Copyright (c) 2000, 2007 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.jdt.internal.ui.text.spelling; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| |
| import org.eclipse.ui.texteditor.spelling.ISpellingEngine; |
| import org.eclipse.ui.texteditor.spelling.ISpellingProblemCollector; |
| import org.eclipse.ui.texteditor.spelling.SpellingContext; |
| |
| import org.eclipse.jdt.ui.PreferenceConstants; |
| |
| import org.eclipse.jdt.internal.ui.text.spelling.engine.ISpellCheckEngine; |
| import org.eclipse.jdt.internal.ui.text.spelling.engine.ISpellChecker; |
| import org.eclipse.jdt.internal.ui.text.spelling.engine.ISpellEvent; |
| import org.eclipse.jdt.internal.ui.text.spelling.engine.ISpellEventListener; |
| |
| /** |
| * Internal abstract spelling engine, subclasses provide a content-type specific implementation. |
| * |
| * @since 3.1 |
| */ |
| public abstract class SpellingEngine implements ISpellingEngine { |
| |
| /** |
| * A named preference that controls the maximum number of problems reported during spell checking. |
| * <p> |
| * Value is of type <code>Integer</code>. |
| * </p> |
| * XXX: will become API in 3.4 |
| * |
| * @since 3.3.1 |
| */ |
| public final static String SPELLING_PROBLEMS_THRESHOLD= "spelling_problems_threshold"; //$NON-NLS-1$ |
| |
| |
| /** |
| * {@link ISpellEvent}listener that forwards events as |
| * {@link org.eclipse.ui.texteditor.spelling.SpellingProblem}. |
| */ |
| protected static class SpellEventListener implements ISpellEventListener { |
| |
| /** Spelling problem collector */ |
| private ISpellingProblemCollector fCollector; |
| |
| /** |
| * The document. |
| * @since 3.3 |
| */ |
| private IDocument fDocument; |
| |
| private int fProblemsThreshold; |
| private int fProblemCount; |
| |
| /** |
| * Initialize with the given spelling problem collector. |
| * |
| * @param collector the spelling problem collector |
| * @param document the document |
| */ |
| public SpellEventListener(ISpellingProblemCollector collector, IDocument document) { |
| fCollector= collector; |
| fDocument= document; |
| fProblemsThreshold= PreferenceConstants.getPreferenceStore().getInt(SpellingEngine.SPELLING_PROBLEMS_THRESHOLD); |
| } |
| |
| /* |
| * @see org.eclipse.jdt.internal.ui.text.spelling.engine.ISpellEventListener#handle(org.eclipse.jdt.internal.ui.text.spelling.engine.ISpellEvent) |
| */ |
| public void handle(ISpellEvent event) { |
| if (isProblemsThresholdReached()) |
| return; |
| fProblemCount++; |
| fCollector.accept(new JavaSpellingProblem(event, fDocument)); |
| } |
| |
| boolean isProblemsThresholdReached() { |
| return fProblemCount >= fProblemsThreshold; |
| } |
| } |
| |
| /* |
| * @see org.eclipse.ui.texteditor.spelling.ISpellingEngine#check(org.eclipse.jface.text.IDocument, org.eclipse.jface.text.IRegion[], org.eclipse.ui.texteditor.spelling.SpellingContext, org.eclipse.ui.texteditor.spelling.ISpellingProblemCollector, org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| public void check(IDocument document, IRegion[] regions, SpellingContext context, ISpellingProblemCollector collector, IProgressMonitor monitor) { |
| if (collector != null) { |
| final ISpellCheckEngine spellingEngine= SpellCheckEngine.getInstance(); |
| ISpellChecker checker= spellingEngine.getSpellChecker(); |
| if (checker != null) |
| check(document, regions, checker, collector, monitor); |
| } |
| } |
| |
| /** |
| * Spell checks the given document regions with the given arguments. |
| * |
| * @param document the document |
| * @param regions the regions |
| * @param checker the spell checker |
| * @param collector the spelling problem collector |
| * @param monitor the progress monitor, can be <code>null</code> |
| */ |
| protected abstract void check(IDocument document, IRegion[] regions, ISpellChecker checker, ISpellingProblemCollector collector, IProgressMonitor monitor); |
| |
| } |