/*******************************************************************************
* Copyright (c) 2006, 2010 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
* David Carver (Intalio) - bug 307323 - remove extraneous call to spell check strategy
*******************************************************************************/
package org.eclipse.wst.sse.ui.internal.reconcile;
import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.content.IContentDescription;
import org.eclipse.core.runtime.content.IContentType;
import org.eclipse.core.runtime.content.IContentTypeManager;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.ITypedRegion;
import org.eclipse.jface.text.Region;
import org.eclipse.jface.text.reconciler.DirtyRegion;
import org.eclipse.jface.text.reconciler.IReconcilingStrategy;
import org.eclipse.jface.text.source.IAnnotationModel;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.projection.ProjectionViewer;
import org.eclipse.wst.sse.ui.internal.ExtendedConfigurationBuilder;
import org.eclipse.wst.sse.ui.internal.IReleasable;
import org.eclipse.wst.sse.ui.internal.Logger;
import org.eclipse.wst.sse.ui.internal.SSEUIPlugin;
import org.eclipse.wst.sse.ui.internal.projection.AbstractStructuredFoldingStrategy;
import org.eclipse.wst.sse.ui.internal.provisional.preferences.CommonEditorPreferenceNames;
import org.eclipse.wst.sse.ui.internal.reconcile.validator.ValidatorBuilder;
import org.eclipse.wst.sse.ui.internal.reconcile.validator.ValidatorMetaData;
import org.eclipse.wst.sse.ui.internal.reconcile.validator.ValidatorStrategy;
import org.eclipse.wst.sse.ui.internal.spelling.SpellcheckStrategy;
import org.eclipse.wst.sse.ui.reconcile.ISourceReconcilingListener;
/**
* Adds to DirtyRegionProcessor Job: - IDocumentListener - ValidatorStrategy -
* Text viewer(dispose, input changed) listeners. - default, spelling, and
* validator strategies - DirtyRegion processing logic.
*/
public class DocumentRegionProcessor extends DirtyRegionProcessor {
private static final boolean DEBUG_VALIDATORS = Boolean.TRUE.toString().equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.sse.ui/debug/reconcilerValidators")); //$NON-NLS-1$
/**
* A strategy to use the defined default Spelling service.
*/
private IReconcilingStrategy fSpellcheckStrategy;
/**
* The strategy that runs validators contributed via
* <code>org.eclipse.wst.sse.ui.extensions.sourcevalidation</code>
* extension point
*/
private ValidatorStrategy fValidatorStrategy;
private ISourceReconcilingListener[] fReconcileListeners = new ISourceReconcilingListener[0];
private IReconcilingStrategy fSemanticHighlightingStrategy;
/**
* The folding strategy for this processor
*/
private AbstractStructuredFoldingStrategy fFoldingStrategy;
private final String SSE_UI_ID = "org.eclipse.wst.sse.ui"; //$NON-NLS-1$
/**
* true if as you type validation is enabled,
* false otherwise
*/
private boolean fValidationEnabled;
public void addReconcilingListener(ISourceReconcilingListener listener) {
Set listeners = new HashSet(Arrays.asList(fReconcileListeners));
listeners.add(listener);
fReconcileListeners = (ISourceReconcilingListener[]) listeners.toArray(new ISourceReconcilingListener[listeners.size()]);
}
protected void beginProcessing() {
super.beginProcessing();
ValidatorStrategy validatorStrategy = getValidatorStrategy();
if (validatorStrategy != null) {
validatorStrategy.beginProcessing();
}
if ((getTextViewer() instanceof ISourceViewer)) {
for (int i = 0; i < fReconcileListeners.length; i++) {
fReconcileListeners[i].aboutToBeReconciled();
}
}
}
protected void endProcessing() {
super.endProcessing();
ValidatorStrategy validatorStrategy = getValidatorStrategy();
if (validatorStrategy != null) {
validatorStrategy.endProcessing();
}
/* single spell-check for everything to ensure that SpellingProblem offsets are correct */
IReconcilingStrategy spellingStrategy = getSpellcheckStrategy();
IDocument document = getDocument();
if (spellingStrategy != null && document != null) {
spellingStrategy.reconcile(new Region(0, document.getLength()));
}
IReconcilingStrategy semanticHighlightingStrategy = getSemanticHighlightingStrategy();
if (semanticHighlightingStrategy != null && document != null) {
semanticHighlightingStrategy.reconcile(new Region(0, document.getLength()));
}
if ((getTextViewer() instanceof ISourceViewer)) {
ISourceViewer sourceViewer = (ISourceViewer) getTextViewer();
IAnnotationModel annotationModel = sourceViewer.getAnnotationModel();
for (int i = 0; i < fReconcileListeners.length; i++) {
fReconcileListeners[i].reconciled(document, annotationModel, false, new NullProgressMonitor());
}
}
}
public void forceReconciling() {
super.forceReconciling();
}
protected String getContentType(IDocument doc) {
if (doc == null)
return null;
String contentTypeId = null;
IContentType ct = null;
try {
IContentDescription desc = Platform.getContentTypeManager().getDescriptionFor(new StringReader(doc.get()), null, IContentDescription.ALL);
if (desc != null) {
ct = desc.getContentType();
if (ct != null)
contentTypeId = ct.getId();
}
}
catch (IOException e) {
// just bail
}
return contentTypeId;
}
protected IReconcilingStrategy getSpellcheckStrategy() {
if (fSpellcheckStrategy == null && getDocument() != null) {
String contentTypeId = getContentType(getDocument());
if (contentTypeId == null) {
contentTypeId = IContentTypeManager.CT_TEXT;
}
if (getTextViewer() instanceof ISourceViewer) {
ISourceViewer viewer = (ISourceViewer) getTextViewer();
fSpellcheckStrategy = new SpellcheckStrategy(viewer, contentTypeId);
fSpellcheckStrategy.setDocument(getDocument());
}
}
return fSpellcheckStrategy;
}
/**
* <p>Get the folding strategy for this processor. Retrieved from the
* extended configuration builder. The processor chosen is set by the plugin.</p>
*
* <p>EX:<br />
* <code><extension point="org.eclipse.wst.sse.ui.editorConfiguration"><br />
* <provisionalConfiguration<br />
* type="foldingstrategy"<br />
* class="org.eclipse.wst.xml.ui.internal.projection.XMLFoldingStrategy"<br />
* target="org.eclipse.core.runtime.xml, org.eclipse.wst.xml.core.xmlsource" /><br />
* </extension></code></p>
*
* <p>The type must be equal to <code>AbstractFoldingStrategy.ID</code> (AKA: foldingstrategy)
* and the class must extend <code>org.eclipse.wst.sse.ui.internal.projection.AbstractFoldingStrategy</code>
* and the target must be a structured editor content type ID</p>
*
* @return the requested folding strategy or null if none can be found
*/
protected IReconcilingStrategy getFoldingStrategy() {
if(fFoldingStrategy == null && getDocument() != null) {
String contentTypeId = getContentType(getDocument());
if (contentTypeId == null) {
contentTypeId = IContentTypeManager.CT_TEXT;
}
ITextViewer viewer = getTextViewer();
if(viewer instanceof ProjectionViewer) {
ExtendedConfigurationBuilder builder = ExtendedConfigurationBuilder.getInstance();
IContentType type = Platform.getContentTypeManager().getContentType(contentTypeId);
while(fFoldingStrategy == null && type != null) {
fFoldingStrategy =(AbstractStructuredFoldingStrategy) builder.getConfiguration(
AbstractStructuredFoldingStrategy.ID, type.getId());
type = type.getBaseType();
}
if(fFoldingStrategy != null) {
fFoldingStrategy.setViewer((ProjectionViewer)viewer);
fFoldingStrategy.setDocument(getDocument());
}
}
}
return fFoldingStrategy;
}
/**
* Enable or disable as you type validation. Typically set by a user preference
*
* @param enable true to enable as you type validation, false to disable
*/
public void setValidatorStrategyEnabled(boolean enable) {
fValidationEnabled = enable;
}
/**
* @return Returns the ValidatorStrategy.
*/
protected ValidatorStrategy getValidatorStrategy() {
ValidatorStrategy validatorStrategy = null;
if (fValidatorStrategy == null && fValidationEnabled) {
if (getTextViewer() instanceof ISourceViewer) {
ISourceViewer viewer = (ISourceViewer) getTextViewer();
String contentTypeId = null;
IDocument doc = viewer.getDocument();
contentTypeId = getContentType(doc);
if (contentTypeId != null) {
validatorStrategy = new ValidatorStrategy(viewer, contentTypeId);
ValidatorBuilder vBuilder = new ValidatorBuilder();
ValidatorMetaData[] vmds = vBuilder.getValidatorMetaData(SSE_UI_ID);
List enabledValidators = new ArrayList(1);
/* if any "must" handle this content type, just add them */
boolean foundSpecificContentTypeValidators = false;
for (int i = 0; i < vmds.length; i++) {
if (vmds[i].mustHandleContentType(contentTypeId)) {
if (DEBUG_VALIDATORS)
Logger.log(Logger.INFO, contentTypeId + " using specific validator " + vmds[i].getValidatorId()); //$NON-NLS-1$
foundSpecificContentTypeValidators = true;
enabledValidators.add(vmds[i]);
}
}
if (!foundSpecificContentTypeValidators) {
for (int i = 0; i < vmds.length; i++) {
if (vmds[i].canHandleContentType(contentTypeId)) {
if (DEBUG_VALIDATORS)
Logger.log(Logger.INFO, contentTypeId + " using inherited(?) validator " + vmds[i].getValidatorId()); //$NON-NLS-1$
enabledValidators.add(vmds[i]);
}
}
}
for (int i = 0; i < enabledValidators.size(); i++) {
validatorStrategy.addValidatorMetaData((ValidatorMetaData) enabledValidators.get(i));
}
}
}
fValidatorStrategy = validatorStrategy;
} else if(fValidatorStrategy != null && fValidationEnabled) {
validatorStrategy = fValidatorStrategy;
}
return validatorStrategy;
}
public void setSemanticHighlightingStrategy(IReconcilingStrategy semanticHighlightingStrategy) {
fSemanticHighlightingStrategy = semanticHighlightingStrategy;
fSemanticHighlightingStrategy.setDocument(getDocument());
}
protected IReconcilingStrategy getSemanticHighlightingStrategy() {
return fSemanticHighlightingStrategy;
}
/**
* @param dirtyRegion
*/
protected void process(DirtyRegion dirtyRegion) {
if (!isInstalled() || isInRewriteSession() || dirtyRegion == null || getDocument() == null)
return;
super.process(dirtyRegion);
ITypedRegion[] partitions = computePartitioning(dirtyRegion);
// call the validator strategy once for each effected partition
DirtyRegion dirty = null;
for (int i = 0; i < partitions.length; i++) {
dirty = createDirtyRegion(partitions[i], DirtyRegion.INSERT);
// [source]validator (extension) for this partition
if (getValidatorStrategy() != null) {
getValidatorStrategy().reconcile(partitions[i], dirty);
}
}
/* if there is a folding strategy then reconcile it for the
* entire dirty region.
* NOTE: the folding strategy does not care about the sub regions.
*/
if(getFoldingStrategy() != null) {
getFoldingStrategy().reconcile(dirtyRegion, null);
}
}
public void removeReconcilingListener(ISourceReconcilingListener listener) {
Set listeners = new HashSet(Arrays.asList(fReconcileListeners));
listeners.remove(listener);
fReconcileListeners = (ISourceReconcilingListener[]) listeners.toArray(new ISourceReconcilingListener[listeners.size()]);
}
public void setDocument(IDocument doc) {
super.setDocument(doc);
IReconcilingStrategy validatorStrategy = getValidatorStrategy();
if (validatorStrategy != null) {
validatorStrategy.setDocument(doc);
}
if (fSemanticHighlightingStrategy != null) {
fSemanticHighlightingStrategy.setDocument(doc);
}
fSpellcheckStrategy = null;
if(fFoldingStrategy != null) {
fFoldingStrategy.uninstall();
}
fFoldingStrategy = null;
}
protected void setEntireDocumentDirty(IDocument document) {
super.setEntireDocumentDirty(document);
// make the entire document dirty
// this also happens on a "save as"
if (document != null && isInstalled() && fLastPartitions != null && document.getLength() == 0) {
/**
* https://bugs.eclipse.org/bugs/show_bug.cgi?id=199053
*
* Process the strategies for the last known-good partitions.
*/
for (int i = 0; i < fLastPartitions.length; i++) {
ValidatorStrategy validatorStrategy = getValidatorStrategy();
if (validatorStrategy != null) {
validatorStrategy.reconcile(fLastPartitions[i], createDirtyRegion(fLastPartitions[i], DirtyRegion.REMOVE));
}
}
IReconcilingStrategy spellingStrategy = getSpellcheckStrategy();
if (spellingStrategy != null) {
spellingStrategy.reconcile(new Region(0, document.getLength()));
}
//if there is a folding strategy then reconcile it
if(getFoldingStrategy() != null) {
getFoldingStrategy().reconcile(new Region(0, document.getLength()));
}
}
}
/**
* @see org.eclipse.wst.sse.ui.internal.reconcile.DirtyRegionProcessor#install(org.eclipse.jface.text.ITextViewer)
*/
public void install(ITextViewer textViewer) {
super.install(textViewer);
//determine if validation is enabled
this.fValidationEnabled = SSEUIPlugin.getInstance().getPreferenceStore().getBoolean(
CommonEditorPreferenceNames.EVALUATE_TEMPORARY_PROBLEMS);
}
/**
* @see org.eclipse.wst.sse.ui.internal.reconcile.DirtyRegionProcessor#uninstall()
*/
public void uninstall() {
if (isInstalled()) {
cancel();
IReconcilingStrategy validatorStrategy = getValidatorStrategy();
if (validatorStrategy != null) {
if (validatorStrategy instanceof IReleasable)
((IReleasable) validatorStrategy).release();
}
if (fSpellcheckStrategy != null) {
fSpellcheckStrategy.setDocument(null);
fSpellcheckStrategy = null;
}
fReconcileListeners = new ISourceReconcilingListener[0];
}
super.uninstall();
}
}