diff options
Diffstat (limited to 'bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/provisional/style/StructuredPresentationReconciler.java')
| -rw-r--r-- | bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/provisional/style/StructuredPresentationReconciler.java | 934 |
1 files changed, 0 insertions, 934 deletions
diff --git a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/provisional/style/StructuredPresentationReconciler.java b/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/provisional/style/StructuredPresentationReconciler.java deleted file mode 100644 index 1001ad5b9c..0000000000 --- a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/provisional/style/StructuredPresentationReconciler.java +++ /dev/null @@ -1,934 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2008, 2009 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.wst.sse.ui.internal.provisional.style; - -import java.util.ArrayList; -import java.util.HashMap; -import java.util.Iterator; -import java.util.List; -import java.util.Map; - -import org.eclipse.core.runtime.Assert; -import org.eclipse.core.runtime.Platform; -import org.eclipse.jface.text.BadLocationException; -import org.eclipse.jface.text.BadPositionCategoryException; -import org.eclipse.jface.text.DefaultPositionUpdater; -import org.eclipse.jface.text.DocumentEvent; -import org.eclipse.jface.text.DocumentPartitioningChangedEvent; -import org.eclipse.jface.text.DocumentRewriteSessionEvent; -import org.eclipse.jface.text.IDocument; -import org.eclipse.jface.text.IDocumentExtension3; -import org.eclipse.jface.text.IDocumentExtension4; -import org.eclipse.jface.text.IDocumentListener; -import org.eclipse.jface.text.IDocumentPartitioningListener; -import org.eclipse.jface.text.IDocumentPartitioningListenerExtension; -import org.eclipse.jface.text.IDocumentPartitioningListenerExtension2; -import org.eclipse.jface.text.IDocumentRewriteSessionListener; -import org.eclipse.jface.text.IPositionUpdater; -import org.eclipse.jface.text.IRegion; -import org.eclipse.jface.text.ITextInputListener; -import org.eclipse.jface.text.ITextListener; -import org.eclipse.jface.text.ITextViewer; -import org.eclipse.jface.text.ITextViewerExtension5; -import org.eclipse.jface.text.ITypedRegion; -import org.eclipse.jface.text.Region; -import org.eclipse.jface.text.TextEvent; -import org.eclipse.jface.text.TextPresentation; -import org.eclipse.jface.text.TextUtilities; -import org.eclipse.jface.text.TypedPosition; -import org.eclipse.jface.text.presentation.IPresentationDamager; -import org.eclipse.jface.text.presentation.IPresentationReconciler; -import org.eclipse.jface.text.presentation.IPresentationReconcilerExtension; -import org.eclipse.jface.text.presentation.IPresentationRepairer; -import org.eclipse.swt.custom.StyleRange; -import org.eclipse.wst.sse.core.internal.provisional.events.IStructuredDocumentListener; -import org.eclipse.wst.sse.core.internal.provisional.events.NewDocumentEvent; -import org.eclipse.wst.sse.core.internal.provisional.events.NoChangeEvent; -import org.eclipse.wst.sse.core.internal.provisional.events.RegionChangedEvent; -import org.eclipse.wst.sse.core.internal.provisional.events.RegionsReplacedEvent; -import org.eclipse.wst.sse.core.internal.provisional.events.StructuredDocumentRegionsReplacedEvent; -import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument; -import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion; -import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegionList; -import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion; -import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionList; - -public class StructuredPresentationReconciler implements IPresentationReconciler, IPresentationReconcilerExtension { - - /** Prefix of the name of the position category for tracking damage regions. */ - final static String TRACKED_PARTITION= "__reconciler_tracked_partition"; //$NON-NLS-1$ - - private final static boolean _trace = Boolean.valueOf(Platform.getDebugOption("org.eclipse.wst.sse.ui/structuredPresentationReconciler")).booleanValue(); //$NON-NLS-1$ - private final static boolean _traceTime = Boolean.valueOf(Platform.getDebugOption("org.eclipse.wst.sse.ui/structuredPresentationReconciler/time")).booleanValue(); //$NON-NLS-1$ - private static final String TRACE_PREFIX = "StructuredPresentationReconciler: "; - private long time0; - private long time1; - - /** - * Internal listener class. - */ - class InternalListener implements - ITextInputListener, IDocumentListener, ITextListener, IStructuredDocumentListener, - IDocumentPartitioningListener, IDocumentPartitioningListenerExtension, IDocumentPartitioningListenerExtension2, IDocumentRewriteSessionListener { - - /** Set to <code>true</code> if between a document about to be changed and a changed event. */ - private boolean fDocumentChanging= false; - - /** Flag for the document being in a rewrite session */ - private boolean fInRewriteSession = false; - - /** Flag for some kind of changes being applied during a document rewrite session */ - private boolean fHasIncomingChanges = false; - - /** - * The cached redraw state of the text viewer. - * @since 3.0 - */ - private boolean fCachedRedrawState= true; - - public void newModel(NewDocumentEvent structuredDocumentEvent) { - if(fInRewriteSession) { - fHasIncomingChanges = true; - return; - } - if (_trace) { - time1 = System.currentTimeMillis(); - } - int length = structuredDocumentEvent.getLength(); - recordDamage(new Region(0, length), structuredDocumentEvent.getDocument()); - if (_trace) { - System.out.println("\n" + TRACE_PREFIX + "calculated damage for NewDocumentEvent: (length=" + length + ")"); //$NON-NLS-1$ //$NON-NLS-2$ - System.out.flush(); - } - if (_trace && _traceTime) { - System.out.println(TRACE_PREFIX + "calculated damage for NewDocumentEvent in " + (System.currentTimeMillis()-time1) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - System.out.flush(); - } - } - - public void noChange(NoChangeEvent structuredDocumentEvent) { - if(fInRewriteSession) { - fHasIncomingChanges = true; - return; - } - if (_trace) { - time1 = System.currentTimeMillis(); - } - if (structuredDocumentEvent.reason == NoChangeEvent.NO_CONTENT_CHANGE ) { - IRegion damage = new Region(structuredDocumentEvent.fOffset, structuredDocumentEvent.fLength); - recordDamage(damage, structuredDocumentEvent.fDocument); - } - if (_trace && _traceTime) { - System.out.println("\n" + TRACE_PREFIX + "calculated damage for NoChangeEvent in " + (System.currentTimeMillis()-time1) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - System.out.flush(); - } - } - - public void nodesReplaced(StructuredDocumentRegionsReplacedEvent structuredDocumentEvent) { - if(fInRewriteSession) { - fHasIncomingChanges = true; - return; - } - if (_trace) { - time1 = System.currentTimeMillis(); - } - IRegion damage; - IStructuredDocumentRegionList newDocumentRegions = structuredDocumentEvent.getNewStructuredDocumentRegions(); - if (newDocumentRegions.getLength() > 0) { - int startOffset = newDocumentRegions.item(0).getStartOffset(); - int length = newDocumentRegions.item(newDocumentRegions.getLength() - 1).getEndOffset() - startOffset; - damage = new Region(startOffset, length); - - } - else { - damage = new Region(structuredDocumentEvent.fOffset, structuredDocumentEvent.getLength()); - } - recordDamage(damage, structuredDocumentEvent.fDocument); - if (_trace) { - System.out.println("\n" + TRACE_PREFIX + "calculated damage for StructuredDocumentRegionsReplacedEvent: [" + damage.getOffset() + ":" + damage.getLength() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$//$NON-NLS-4$ - System.out.flush(); - } - if (_trace && _traceTime) { - System.out.println(TRACE_PREFIX + "calculated damage for StructuredDocumentRegionsReplacedEvent in " + (System.currentTimeMillis()-time1) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - System.out.flush(); - } - } - - public void regionChanged(RegionChangedEvent structuredDocumentEvent) { - if(fInRewriteSession) { - fHasIncomingChanges = true; - return; - } - if (_trace) { - time1 = System.currentTimeMillis(); - } - IStructuredDocumentRegion documentRegion = structuredDocumentEvent.getStructuredDocumentRegion(); - ITextRegion changedRegion = structuredDocumentEvent.getRegion(); - int startOffset = documentRegion.getStartOffset(changedRegion); - int length = changedRegion.getLength(); - IRegion damage = new Region(startOffset, length); - - recordDamage(damage, structuredDocumentEvent.fDocument); - if (_trace) { - System.out.println("\n" + TRACE_PREFIX + "calculated damage for RegionChangedEvent: [" + damage.getOffset() + ":" + damage.getLength() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$//$NON-NLS-4$ - System.out.flush(); - } - if (_trace && _traceTime) { - System.out.println(TRACE_PREFIX + "calculated damage for RegionChangedEvent in " + (System.currentTimeMillis()-time1) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - System.out.flush(); - } - } - - public void regionsReplaced(RegionsReplacedEvent structuredDocumentEvent) { - if(fInRewriteSession) { - fHasIncomingChanges = true; - return; - } - if (_trace) { - time1 = System.currentTimeMillis(); - } - IRegion damage; - IStructuredDocumentRegion documentRegion = structuredDocumentEvent.getStructuredDocumentRegion(); - ITextRegionList newRegions = structuredDocumentEvent.getNewRegions(); - if (newRegions.size() > 0) { - ITextRegion firstChangedRegion = newRegions.get(0); - ITextRegion lastChangedRegion = newRegions.get(newRegions.size() - 1); - int startOffset = documentRegion.getStartOffset(firstChangedRegion); - int length = documentRegion.getEndOffset(lastChangedRegion) - startOffset; - damage = new Region(startOffset, length); - } - else { - damage = new Region(documentRegion.getStartOffset(), documentRegion.getLength()); - } - recordDamage(damage, structuredDocumentEvent.fDocument); - if (_trace) { - System.out.println("\n" + TRACE_PREFIX + "calculated damage for RegionsReplacedEvent: [" + damage.getOffset() + ":" + damage.getLength() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$//$NON-NLS-4$ - System.out.flush(); - } - if (_trace && _traceTime) { - System.out.println(TRACE_PREFIX + "calculated damage for RegionsReplacedEvent in " + (System.currentTimeMillis()-time1) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - System.out.flush(); - } - } - - /* - * @see ITextInputListener#inputDocumentAboutToBeChanged(IDocument, IDocument) - */ - public void inputDocumentAboutToBeChanged(IDocument oldDocument, IDocument newDocument) { - if (oldDocument != null) { - try { - - fViewer.removeTextListener(this); - oldDocument.removeDocumentListener(this); - oldDocument.removeDocumentPartitioningListener(this); - if (oldDocument instanceof IStructuredDocument) { - ((IStructuredDocument) oldDocument).removeDocumentChangedListener(this); - } - - oldDocument.removePositionUpdater(fPositionUpdater); - oldDocument.removePositionCategory(fPositionCategory); - - } catch (BadPositionCategoryException x) { - // should not happened for former input documents; - } - } - } - - /* - * @see ITextInputListener#inputDocumenChanged(IDocument, IDocument) - */ - public void inputDocumentChanged(IDocument oldDocument, IDocument newDocument) { - if (_trace || _traceTime) { - time1 = System.currentTimeMillis(); - } - - fDocumentChanging= false; - fCachedRedrawState= true; - - if (newDocument != null) { - newDocument.addPositionCategory(fPositionCategory); - newDocument.addPositionUpdater(fPositionUpdater); - - if (newDocument instanceof IStructuredDocument) { - newDocument.addDocumentPartitioningListener(this); - newDocument.addDocumentListener(this); - ((IStructuredDocument)newDocument).addDocumentChangedListener(this); - } - fViewer.addTextListener(this); - - if (newDocument instanceof IStructuredDocument) { - setDocumentToDamagers(newDocument); - setDocumentToRepairers(newDocument); - processDamage(new Region(0, newDocument.getLength()), newDocument); - } - } - if (_trace) { - System.out.println(TRACE_PREFIX + "processed damage for inputDocumentChanged in " + (System.currentTimeMillis() - time1) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - } - } - - /* - * @see IDocumentPartitioningListener#documentPartitioningChanged(IDocument) - */ - public void documentPartitioningChanged(IDocument document) { - if (_traceTime) { - time0 = System.currentTimeMillis(); - } - if (!fDocumentChanging && fCachedRedrawState) - processDamage(new Region(0, document.getLength()), document); - else - fDocumentPartitioningChanged= true; - if (_trace) { - System.out.println(TRACE_PREFIX + "processed damage for documentPartitioningChanged [full document]"); //$NON-NLS-1$ - } - if (_trace && _traceTime) { - System.out.println(TRACE_PREFIX + "processed damage for documentPartitioningChanged in " + (System.currentTimeMillis() - time0) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - } - } - - /* - * @see IDocumentPartitioningListenerExtension#documentPartitioningChanged(IDocument, IRegion) - * @since 2.0 - */ - public void documentPartitioningChanged(IDocument document, IRegion changedRegion) { - if (_traceTime) { - time0 = System.currentTimeMillis(); - } - if (!fDocumentChanging && fCachedRedrawState) { - processDamage(new Region(changedRegion.getOffset(), changedRegion.getLength()), document); - } else { - fDocumentPartitioningChanged= true; - fChangedDocumentPartitions= changedRegion; - } - if (_trace) { - System.out.println(TRACE_PREFIX + "processed damage for documentPartitioningChanged [" + changedRegion.getOffset() + ":" + changedRegion.getLength() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ - } - if (_trace && _traceTime) { - System.out.println(TRACE_PREFIX + "processed damage for documentPartitioningChanged in " + (System.currentTimeMillis() - time0) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - } - } - - /* - * @see org.eclipse.jface.text.IDocumentPartitioningListenerExtension2#documentPartitioningChanged(org.eclipse.jface.text.DocumentPartitioningChangedEvent) - * @since 3.0 - */ - public void documentPartitioningChanged(DocumentPartitioningChangedEvent event) { - IRegion changedRegion= event.getChangedRegion(getDocumentPartitioning()); - if (changedRegion != null) - documentPartitioningChanged(event.getDocument(), changedRegion); - } - - /* - * @see IDocumentListener#documentAboutToBeChanged(DocumentEvent) - */ - public void documentAboutToBeChanged(DocumentEvent e) { - - fDocumentChanging= true; - if (fCachedRedrawState) { - try { - int offset= e.getOffset() + e.getLength(); - ITypedRegion region= getPartition(e.getDocument(), offset); - fRememberedPosition= new TypedPosition(region); - e.getDocument().addPosition(fPositionCategory, fRememberedPosition); - } catch (BadLocationException x) { - // can not happen - } catch (BadPositionCategoryException x) { - // should not happen on input elements - } - } - } - - /* - * @see IDocumentListener#documentChanged(DocumentEvent) - */ - public void documentChanged(DocumentEvent e) { - if (fCachedRedrawState) { - try { - e.getDocument().removePosition(fPositionCategory, fRememberedPosition); - } catch (BadPositionCategoryException x) { - // can not happen on input documents - } - } - fDocumentChanging= false; - } - - /* - * @see ITextListener#textChanged(TextEvent) - */ - public void textChanged(TextEvent e) { - if(fInRewriteSession) { - fHasIncomingChanges = true; - return; - } - fCachedRedrawState= e.getViewerRedrawState(); - if (!fCachedRedrawState) { - if (_trace) { - System.out.println("\n" + TRACE_PREFIX + "returned early from textChanged(TextEvent)"); //$NON-NLS-1$ //$NON-NLS-2$ - } - return; - } - if (_trace) { - System.out.println("\n" + TRACE_PREFIX + "entering textChanged(TextEvent)"); //$NON-NLS-1$ //$NON-NLS-2$ - time0 = System.currentTimeMillis(); - } - - IRegion damage= null; - IDocument document= null; - - if (e.getDocumentEvent() == null) { - document= fViewer.getDocument(); - if (document != null) { - if (e.getOffset() == 0 && e.getLength() == 0 && e.getText() == null) { - // redraw state change, damage the whole document - damage= new Region(0, document.getLength()); - } else { - IRegion region= widgetRegion2ModelRegion(e); - try { - String text= document.get(region.getOffset(), region.getLength()); - DocumentEvent de= new DocumentEvent(document, region.getOffset(), region.getLength(), text); - damage= getDamage(de, false); - } catch (BadLocationException x) { - /* ignored in platform PresentationReconciler, too */ - } - } - } - } else { - DocumentEvent de= e.getDocumentEvent(); - document= de.getDocument(); - damage= getDamage(de, true); - } - if(_trace && _traceTime) { - System.out.println(TRACE_PREFIX + "calculated simple text damage at " + (System.currentTimeMillis() - time0) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - System.out.flush(); - } - - boolean damageOverlaps = processRecordedDamages(damage, document); - if(_trace && _traceTime) { - System.out.println(TRACE_PREFIX + "processed recorded structured text damage at " + (System.currentTimeMillis() - time0) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - } - - if (damage != null && document != null && !damageOverlaps) { - processDamage(damage, document); - if(_trace && _traceTime) { - System.out.println(TRACE_PREFIX + "processed simple text damage at " + (System.currentTimeMillis() - time0) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - System.out.flush(); - } - } - - fDocumentPartitioningChanged= false; - fChangedDocumentPartitions= null; - if(_trace) { - System.out.println(TRACE_PREFIX + "finished textChanged(TextEvent) in " + (System.currentTimeMillis() - time0) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - } - } - - /** - * Translates the given text event into the corresponding range of the viewer's document. - * - * @param e the text event - * @return the widget region corresponding the region of the given event - * @since 2.1 - */ - protected IRegion widgetRegion2ModelRegion(TextEvent e) { - - String text= e.getText(); - int length= text == null ? 0 : text.length(); - - if (fViewer instanceof ITextViewerExtension5) { - ITextViewerExtension5 extension= (ITextViewerExtension5) fViewer; - return extension.widgetRange2ModelRange(new Region(e.getOffset(), length)); - } - - IRegion visible= fViewer.getVisibleRegion(); - IRegion region= new Region(e.getOffset() + visible.getOffset(), length); - return region; - } - - public void documentRewriteSessionChanged(DocumentRewriteSessionEvent event) { - fInRewriteSession = (event != null && event.fChangeType == DocumentRewriteSessionEvent.SESSION_START); - if(!fInRewriteSession && fHasIncomingChanges && event != null) { - if (_trace) - time0 = System.currentTimeMillis(); - processDamage(new Region(0, event.fDocument.getLength()), event.fDocument); - if(_trace && _traceTime) - System.out.println(TRACE_PREFIX + " processed damaged after ending document rewrite session at " + (System.currentTimeMillis() - time0) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - fHasIncomingChanges = false; - } - } - - } - - private static class RecordedDamage { - IRegion damage; - IDocument document; - RecordedDamage(IRegion damage, IDocument document) { - this.damage = damage; - this.document = document; - } - } - - /** The map of presentation damagers. */ - private Map fDamagers; - /** The map of presentation repairers. */ - private Map fRepairers; - /** The target viewer. */ - private ITextViewer fViewer; - /** The internal listener. */ - private InternalListener fInternalListener= new InternalListener(); - /** The name of the position category to track damage regions. */ - private String fPositionCategory; - /** The position updated for the damage regions' position category. */ - private IPositionUpdater fPositionUpdater; - /** The positions representing the damage regions. */ - private TypedPosition fRememberedPosition; - /** Flag indicating the receipt of a partitioning changed notification. */ - private boolean fDocumentPartitioningChanged= false; - /** The range covering the changed partitioning. */ - private IRegion fChangedDocumentPartitions= null; - - /** - * Because structured document events fire before textChanged(), it's - * possible the widget isn't fully aware of the changes to its contents. - * "Record" the damage to process after textChanged() has been fired. - */ - private List fRecordedDamages = new ArrayList(2); - - /** - * The partitioning used by this presentation reconciler. - * @since 3.0 - */ - private String fPartitioning; - - private IDocument fLastDocument; - - /** - * Creates a new presentation reconciler. There are no damagers or repairers - * registered with this reconciler by default. The default partitioning - * <code>IDocumentExtension3.DEFAULT_PARTITIONING</code> is used. - */ - public StructuredPresentationReconciler() { - super(); - fPartitioning= IDocumentExtension3.DEFAULT_PARTITIONING; - fPositionCategory= TRACKED_PARTITION + hashCode(); - fPositionUpdater= new DefaultPositionUpdater(fPositionCategory); - } - - /** - * Sets the document partitioning for this presentation reconciler. - * - * @param partitioning the document partitioning for this presentation reconciler. - * @since 3.0 - */ - public void setDocumentPartitioning(String partitioning) { - Assert.isNotNull(partitioning); - fPartitioning= partitioning; - } - - /* - * @see org.eclipse.jface.text.presentation.IPresentationReconcilerExtension#geDocumenttPartitioning() - * @since 3.0 - */ - public String getDocumentPartitioning() { - return fPartitioning; - } - - /** - * Registers the given presentation damager for a particular content type. - * If there is already a damager registered for this type, the old damager - * is removed first. - * - * @param damager the presentation damager to register, or <code>null</code> to remove an existing one - * @param contentType the content type under which to register - */ - public void setDamager(IPresentationDamager damager, String contentType) { - - Assert.isNotNull(contentType); - - if (fDamagers == null) - fDamagers= new HashMap(); - - if (damager == null) - fDamagers.remove(contentType); - else - fDamagers.put(contentType, damager); - } - - /** - * Registers the given presentation repairer for a particular content type. - * If there is already a repairer registered for this type, the old repairer - * is removed first. - * - * @param repairer the presentation repairer to register, or <code>null</code> to remove an existing one - * @param contentType the content type under which to register - */ - public void setRepairer(IPresentationRepairer repairer, String contentType) { - - Assert.isNotNull(contentType); - - if (fRepairers == null) - fRepairers= new HashMap(); - - if (repairer == null) - fRepairers.remove(contentType); - else - fRepairers.put(contentType, repairer); - } - - /* - * @see IPresentationReconciler#install(ITextViewer) - */ - public void install(ITextViewer viewer) { - if(_trace) { - time0 = System.currentTimeMillis(); - } - Assert.isNotNull(viewer); - - fViewer= viewer; - fViewer.addTextInputListener(fInternalListener); - - IDocument document= viewer.getDocument(); - if (document != null) { - fInternalListener.inputDocumentChanged(null, document); - if(document instanceof IStructuredDocument) { - ((IStructuredDocument) document).addDocumentChangedListener(fInternalListener); - } - if(document instanceof IDocumentExtension4) { - ((IDocumentExtension4) document).addDocumentRewriteSessionListener(fInternalListener); - } - } - if(_trace) { - System.out.println(TRACE_PREFIX + "installed to text viewer in " + (System.currentTimeMillis() - time0) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - } - } - - /* - * @see IPresentationReconciler#uninstall() - */ - public void uninstall() { - if(_trace) { - time0 = System.currentTimeMillis(); - } - fViewer.removeTextInputListener(fInternalListener); - - IDocument document = null; - if(( document = fViewer.getDocument()) instanceof IStructuredDocument) { - ((IStructuredDocument) document).removeDocumentChangedListener(fInternalListener); - } - if(document instanceof IDocumentExtension4) { - ((IDocumentExtension4) document).removeDocumentRewriteSessionListener(fInternalListener); - } - // Ensure we uninstall all listeners - fInternalListener.inputDocumentAboutToBeChanged(fViewer.getDocument(), null); - if(_trace) { - System.out.println(TRACE_PREFIX + "uninstalled from text viewer in " + (System.currentTimeMillis() - time0) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ - } - } - - /* - * @see IPresentationReconciler#getDamager(String) - */ - public IPresentationDamager getDamager(String contentType) { - - if (fDamagers == null) - return null; - - return (IPresentationDamager) fDamagers.get(contentType); - } - - /* - * @see IPresentationReconciler#getRepairer(String) - */ - public IPresentationRepairer getRepairer(String contentType) { - - if (fRepairers == null) - return null; - - return (IPresentationRepairer) fRepairers.get(contentType); - } - - /** - * Informs all registered damagers about the document on which they will work. - * - * @param document the document on which to work - */ - protected void setDocumentToDamagers(IDocument document) { - if (fDamagers != null) { - Iterator e= fDamagers.values().iterator(); - while (e.hasNext()) { - IPresentationDamager damager= (IPresentationDamager) e.next(); - damager.setDocument(document); - } - } - } - - /** - * Informs all registered repairers about the document on which they will work. - * - * @param document the document on which to work - */ - protected void setDocumentToRepairers(IDocument document) { - if (fRepairers != null) { - Iterator e= fRepairers.values().iterator(); - while (e.hasNext()) { - IPresentationRepairer repairer= (IPresentationRepairer) e.next(); - repairer.setDocument(document); - } - } - } - - /** - * Constructs a "repair description" for the given damage and returns this - * description as a text presentation. For this, it queries the partitioning - * of the damage region and asks the appropriate presentation repairer for - * each partition to construct the "repair description" for this partition. - * - * @param damage the damage to be repaired - * @param document the document whose presentation must be repaired - * @return the presentation repair description as text presentation or - * <code>null</code> if the partitioning could not be computed - */ - protected TextPresentation createPresentation(IRegion damage, IDocument document) { - try { - int validLength = Math.min(damage.getLength(), document.getLength() - damage.getOffset()); - - if (fRepairers == null || fRepairers.isEmpty()) { - TextPresentation presentation= new TextPresentation(damage, 1); - presentation.setDefaultStyleRange(new StyleRange(damage.getOffset(), validLength, null, null)); - return presentation; - } - - TextPresentation presentation= new TextPresentation(damage, 1000); - - ITypedRegion[] partitions= TextUtilities.computePartitioning(document, getDocumentPartitioning(), damage.getOffset(), validLength, false); - for (int i= 0; i < partitions.length; i++) { - ITypedRegion r= partitions[i]; - IPresentationRepairer repairer= getRepairer(r.getType()); - if (repairer != null) - repairer.createPresentation(presentation, r); - } - - return presentation; - - } catch (BadLocationException x) { - /* ignored in platform PresentationReconciler, too */ - } - - return null; - } - - - /** - * Checks for the first and the last affected partition affected by a - * document event and calls their damagers. Invalidates everything from the - * start of the damage for the first partition until the end of the damage - * for the last partition. - * - * @param e the event describing the document change - * @param optimize <code>true</code> if partition changes should be - * considered for optimization - * @return the damaged caused by the change or <code>null</code> if - * computing the partitioning failed - * @since 3.0 - */ - IRegion getDamage(DocumentEvent e, boolean optimize) { - int length= e.getText() == null ? 0 : e.getText().length(); - - if (fDamagers == null || fDamagers.isEmpty()) { - length= Math.max(e.getLength(), length); - length= Math.min(e.getDocument().getLength() - e.getOffset(), length); - return new Region(e.getOffset(), length); - } - - boolean isDeletion= length == 0; - IRegion damage= null; - try { - int offset= e.getOffset(); - if (isDeletion) - offset= Math.max(0, offset - 1); - ITypedRegion partition= getPartition(e.getDocument(), offset); - IPresentationDamager damager= getDamager(partition.getType()); - if (damager == null) - return null; - - IRegion r= damager.getDamageRegion(partition, e, fDocumentPartitioningChanged); - - if (!fDocumentPartitioningChanged && optimize && !isDeletion) { - damage= r; - } else { - - int damageEnd= getDamageEndOffset(e); - - int parititionDamageEnd= -1; - if (fChangedDocumentPartitions != null) - parititionDamageEnd= fChangedDocumentPartitions.getOffset() + fChangedDocumentPartitions.getLength(); - - int end= Math.max(damageEnd, parititionDamageEnd); - - damage= end == -1 ? r : new Region(r.getOffset(), end - r.getOffset()); - } - - } catch (BadLocationException x) { - /* ignored in platform PresentationReconciler, too */ - } - - return damage; - } - - /** - * Returns the end offset of the damage. If a partition has been split by - * the given document event also the second half of the original - * partition must be considered. This is achieved by using the remembered - * partition range. - * - * @param e the event describing the change - * @return the damage end offset (excluding) - * @exception BadLocationException if method accesses invalid offset - */ - int getDamageEndOffset(DocumentEvent e) throws BadLocationException { - - IDocument d= e.getDocument(); - - int length= 0; - if (e.getText() != null) { - length= e.getText().length(); - if (length > 0) - -- length; - } - - ITypedRegion partition= getPartition(d, e.getOffset() + length); - int endOffset= partition.getOffset() + partition.getLength(); - if (endOffset == e.getOffset()) - return -1; - - int end= fRememberedPosition == null ? -1 : fRememberedPosition.getOffset() + fRememberedPosition.getLength(); - if (endOffset < end && end < d.getLength()) - partition= getPartition(d, end); - - //if there is not damager for the partition then use the endOffset of the partition - IPresentationDamager damager= getDamager(partition.getType()); - if (damager != null) { - IRegion r= damager.getDamageRegion(partition, e, fDocumentPartitioningChanged); - endOffset = r.getOffset() + r.getLength(); - } - - return endOffset; - } - - void processRecordedDamages() { - processRecordedDamages(null, null); - } - - boolean processRecordedDamages(IRegion damage, IDocument document) { - RecordedDamage[] recordings = null; - boolean recordingOverlaps = false; - synchronized (fRecordedDamages) { - recordings = (RecordedDamage[]) fRecordedDamages.toArray(new RecordedDamage[fRecordedDamages.size()]); - fRecordedDamages.clear(); - } - for (int i = 0; i < recordings.length; i++) { - if (isOverlappingRegion(damage, recordings[i].damage) && document == recordings[i].document) - recordingOverlaps = true; - processDamage(recordings[i].damage, recordings[i].document); - } - return recordingOverlaps; - } - - private boolean isOverlappingRegion(IRegion base, IRegion damage) { - if(base == null || damage == null) - return false; - - int baseEnd = base.getOffset() + base.getLength(); - int damageEnd = damage.getOffset() + damage.getLength(); - - return damage.getOffset() <= base.getOffset() && (damageEnd >= baseEnd); - } - - /** - * Processes the given damage. - * @param damage the damage to be repaired - * @param document the document whose presentation must be repaired - */ - void processDamage(IRegion damage, IDocument document) { - if (damage != null && damage.getLength() > 0) { - TextPresentation p = createPresentation(damage, document); - if (p != null) { - /** - * 229749 - Read-Only highlighting support missing - * 272981 - Read-only highlighting moved to semantic highlighting - */ - applyTextRegionCollection(p); - } - } - } - - /** - * Processes the given damage. - * @param damage the damage to be repaired - * @param document the document whose presentation must be repaired - */ - void recordDamage(IRegion damage, IDocument document) { - if (damage != null && damage.getLength() > 0) { - synchronized (fRecordedDamages) { - fRecordedDamages.add(new RecordedDamage(damage, document)); - } - } - } - - /** - * Applies the given text presentation to the text viewer the presentation - * reconciler is installed on. - * - * @param presentation the text presentation to be applied to the text viewer - */ - void applyTextRegionCollection(TextPresentation presentation) { - fViewer.changeTextPresentation(presentation, false); - } - - /** - * Returns the partition for the given offset in the given document. - * - * @param document the document - * @param offset the offset - * @return the partition - * @throws BadLocationException if offset is invalid in the given document - * @since 3.0 - */ - ITypedRegion getPartition(IDocument document, int offset) throws BadLocationException { - return TextUtilities.getPartition(document, getDocumentPartitioning(), offset, false); - } - - /** - * Constructs a "repair description" for the given damage and returns this - * description as a text presentation, essentially making - * {@link #createPresentation(IRegion, IDocument)} publicly callable. - * <p> - * NOTE: Should not be used if this reconciler is installed on a viewer. - * This method is considered EXPERIMENTAL and may not be available in - * subsequent versions. - * </p> - * - * @param damage - * the damage to be repaired - * @param document - * the document whose presentation must be repaired - * @return the presentation repair description as text presentation - */ - public TextPresentation createRepairDescription(IRegion damage, IDocument document) { - if (document != fLastDocument) { - setDocumentToDamagers(document); - setDocumentToRepairers(document); - fLastDocument= document; - } - return createPresentation(damage, document); - } - -} |