Mercurial > projects > dwt-addons
view dwtx/jface/text/RewriteSessionEditProcessor.d @ 143:53b889547456
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author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 24 Aug 2008 21:32:37 +0200 |
parents | 26688fec6d23 |
children | 000f9136b8f7 |
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/******************************************************************************* * Copyright (c) 2006 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 * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwtx.jface.text.RewriteSessionEditProcessor; import dwtx.jface.text.IDocumentPartitioningListener; // packageimport import dwtx.jface.text.DefaultTextHover; // packageimport import dwtx.jface.text.AbstractInformationControl; // packageimport import dwtx.jface.text.TextUtilities; // packageimport import dwtx.jface.text.IInformationControlCreatorExtension; // packageimport import dwtx.jface.text.AbstractInformationControlManager; // packageimport import dwtx.jface.text.ITextViewerExtension2; // packageimport import dwtx.jface.text.IDocumentPartitioner; // packageimport import dwtx.jface.text.DefaultIndentLineAutoEditStrategy; // packageimport import dwtx.jface.text.ITextSelection; // packageimport import dwtx.jface.text.Document; // packageimport import dwtx.jface.text.FindReplaceDocumentAdapterContentProposalProvider; // packageimport import dwtx.jface.text.ITextListener; // packageimport import dwtx.jface.text.BadPartitioningException; // packageimport import dwtx.jface.text.ITextViewerExtension5; // packageimport import dwtx.jface.text.IDocumentPartitionerExtension3; // packageimport import dwtx.jface.text.IUndoManager; // packageimport import dwtx.jface.text.ITextHoverExtension2; // packageimport import dwtx.jface.text.IRepairableDocument; // packageimport import dwtx.jface.text.IRewriteTarget; // packageimport import dwtx.jface.text.DefaultPositionUpdater; // packageimport import dwtx.jface.text.TextViewerHoverManager; // packageimport import dwtx.jface.text.DocumentRewriteSession; // packageimport import dwtx.jface.text.TextViewer; // packageimport import dwtx.jface.text.ITextViewerExtension8; // packageimport import dwtx.jface.text.RegExMessages; // packageimport import dwtx.jface.text.IDelayedInputChangeProvider; // packageimport import dwtx.jface.text.ITextOperationTargetExtension; // packageimport import dwtx.jface.text.IWidgetTokenOwner; // packageimport import dwtx.jface.text.IViewportListener; // packageimport import dwtx.jface.text.GapTextStore; // packageimport import dwtx.jface.text.MarkSelection; // packageimport import dwtx.jface.text.IDocumentPartitioningListenerExtension; // packageimport import dwtx.jface.text.IDocumentAdapterExtension; // packageimport import dwtx.jface.text.IInformationControlExtension; // packageimport import dwtx.jface.text.IDocumentPartitioningListenerExtension2; // packageimport import dwtx.jface.text.DefaultDocumentAdapter; // packageimport import dwtx.jface.text.ITextViewerExtension3; // packageimport import dwtx.jface.text.IInformationControlCreator; // packageimport import dwtx.jface.text.TypedRegion; // packageimport import dwtx.jface.text.ISynchronizable; // packageimport import dwtx.jface.text.IMarkRegionTarget; // packageimport import dwtx.jface.text.TextViewerUndoManager; // packageimport import dwtx.jface.text.IRegion; // packageimport import dwtx.jface.text.IInformationControlExtension2; // packageimport import dwtx.jface.text.IDocumentExtension4; // packageimport import dwtx.jface.text.IDocumentExtension2; // packageimport import dwtx.jface.text.IDocumentPartitionerExtension2; // packageimport import dwtx.jface.text.Assert; // packageimport import dwtx.jface.text.DefaultInformationControl; // packageimport import dwtx.jface.text.IWidgetTokenOwnerExtension; // packageimport import dwtx.jface.text.DocumentClone; // packageimport import dwtx.jface.text.DefaultUndoManager; // packageimport import dwtx.jface.text.IFindReplaceTarget; // packageimport import dwtx.jface.text.IAutoEditStrategy; // packageimport import dwtx.jface.text.ILineTrackerExtension; // packageimport import dwtx.jface.text.IUndoManagerExtension; // packageimport import dwtx.jface.text.TextSelection; // packageimport import dwtx.jface.text.DefaultAutoIndentStrategy; // packageimport import dwtx.jface.text.IAutoIndentStrategy; // packageimport import dwtx.jface.text.IPainter; // packageimport import dwtx.jface.text.IInformationControl; // packageimport import dwtx.jface.text.IInformationControlExtension3; // packageimport import dwtx.jface.text.ITextViewerExtension6; // packageimport import dwtx.jface.text.IInformationControlExtension4; // packageimport import dwtx.jface.text.DefaultLineTracker; // packageimport import dwtx.jface.text.IDocumentInformationMappingExtension; // packageimport import dwtx.jface.text.IRepairableDocumentExtension; // packageimport import dwtx.jface.text.ITextHover; // packageimport import dwtx.jface.text.FindReplaceDocumentAdapter; // packageimport import dwtx.jface.text.ILineTracker; // packageimport import dwtx.jface.text.Line; // packageimport import dwtx.jface.text.ITextViewerExtension; // packageimport import dwtx.jface.text.IDocumentAdapter; // packageimport import dwtx.jface.text.TextEvent; // packageimport import dwtx.jface.text.BadLocationException; // packageimport import dwtx.jface.text.AbstractDocument; // packageimport import dwtx.jface.text.AbstractLineTracker; // packageimport import dwtx.jface.text.TreeLineTracker; // packageimport import dwtx.jface.text.ITextPresentationListener; // packageimport import dwtx.jface.text.Region; // packageimport import dwtx.jface.text.ITextViewer; // packageimport import dwtx.jface.text.IDocumentInformationMapping; // packageimport import dwtx.jface.text.MarginPainter; // packageimport import dwtx.jface.text.IPaintPositionManager; // packageimport import dwtx.jface.text.TextPresentation; // packageimport import dwtx.jface.text.IFindReplaceTargetExtension; // packageimport import dwtx.jface.text.ISlaveDocumentManagerExtension; // packageimport import dwtx.jface.text.ISelectionValidator; // packageimport import dwtx.jface.text.IDocumentExtension; // packageimport import dwtx.jface.text.PropagatingFontFieldEditor; // packageimport import dwtx.jface.text.ConfigurableLineTracker; // packageimport import dwtx.jface.text.SlaveDocumentEvent; // packageimport import dwtx.jface.text.IDocumentListener; // packageimport import dwtx.jface.text.PaintManager; // packageimport import dwtx.jface.text.IFindReplaceTargetExtension3; // packageimport import dwtx.jface.text.ITextDoubleClickStrategy; // packageimport import dwtx.jface.text.IDocumentExtension3; // packageimport import dwtx.jface.text.Position; // packageimport import dwtx.jface.text.TextMessages; // packageimport import dwtx.jface.text.CopyOnWriteTextStore; // packageimport import dwtx.jface.text.WhitespaceCharacterPainter; // packageimport import dwtx.jface.text.IPositionUpdater; // packageimport import dwtx.jface.text.DefaultTextDoubleClickStrategy; // packageimport import dwtx.jface.text.ListLineTracker; // packageimport import dwtx.jface.text.ITextInputListener; // packageimport import dwtx.jface.text.BadPositionCategoryException; // packageimport import dwtx.jface.text.IWidgetTokenKeeperExtension; // packageimport import dwtx.jface.text.IInputChangedListener; // packageimport import dwtx.jface.text.ITextOperationTarget; // packageimport import dwtx.jface.text.IDocumentInformationMappingExtension2; // packageimport import dwtx.jface.text.ITextViewerExtension7; // packageimport import dwtx.jface.text.IInformationControlExtension5; // packageimport import dwtx.jface.text.IDocumentRewriteSessionListener; // packageimport import dwtx.jface.text.JFaceTextUtil; // packageimport import dwtx.jface.text.AbstractReusableInformationControlCreator; // packageimport import dwtx.jface.text.TabsToSpacesConverter; // packageimport import dwtx.jface.text.CursorLinePainter; // packageimport import dwtx.jface.text.ITextHoverExtension; // packageimport import dwtx.jface.text.IEventConsumer; // packageimport import dwtx.jface.text.IDocument; // packageimport import dwtx.jface.text.IWidgetTokenKeeper; // packageimport import dwtx.jface.text.DocumentCommand; // packageimport import dwtx.jface.text.TypedPosition; // packageimport import dwtx.jface.text.IEditingSupportRegistry; // packageimport import dwtx.jface.text.IDocumentPartitionerExtension; // packageimport import dwtx.jface.text.AbstractHoverInformationControlManager; // packageimport import dwtx.jface.text.IEditingSupport; // packageimport import dwtx.jface.text.IMarkSelection; // packageimport import dwtx.jface.text.ISlaveDocumentManager; // packageimport import dwtx.jface.text.DocumentEvent; // packageimport import dwtx.jface.text.DocumentPartitioningChangedEvent; // packageimport import dwtx.jface.text.ITextStore; // packageimport import dwtx.jface.text.JFaceTextMessages; // packageimport import dwtx.jface.text.DocumentRewriteSessionEvent; // packageimport import dwtx.jface.text.SequentialRewriteTextStore; // packageimport import dwtx.jface.text.DocumentRewriteSessionType; // packageimport import dwtx.jface.text.TextAttribute; // packageimport import dwtx.jface.text.ITextViewerExtension4; // packageimport import dwtx.jface.text.ITypedRegion; // packageimport import dwt.dwthelper.utils; import dwtx.text.edits.CopyTargetEdit; import dwtx.text.edits.DeleteEdit; import dwtx.text.edits.InsertEdit; import dwtx.text.edits.MalformedTreeException; import dwtx.text.edits.MoveTargetEdit; import dwtx.text.edits.ReplaceEdit; import dwtx.text.edits.TextEdit; import dwtx.text.edits.TextEditProcessor; import dwtx.text.edits.TextEditVisitor; import dwtx.text.edits.UndoEdit; /** * A text edit processor that brackets the application of edits into a document rewrite session. * * @since 3.3 */ public final class RewriteSessionEditProcessor : TextEditProcessor { /** The threshold for <em>large</em> text edits. */ private static final int THRESHOLD= 1000; /** * Text edit visitor that estimates the compound size of an edit tree in characters. */ private static final class SizeVisitor : TextEditVisitor { int fSize= 0; public bool visit(CopyTargetEdit edit) { fSize += edit.getLength(); return super.visit(edit); } public bool visit(DeleteEdit edit) { fSize += edit.getLength(); return super.visit(edit); } public bool visit(InsertEdit edit) { fSize += edit.getText().length(); return super.visit(edit); } public bool visit(MoveTargetEdit edit) { fSize += edit.getLength(); return super.visit(edit); } public bool visit(ReplaceEdit edit) { fSize += Math.max(edit.getLength(), edit.getText().length()); return super.visit(edit); } } /** * Constructs a new edit processor for the given document. * * @param document the document to manipulate * @param root the root of the text edit tree describing the modifications. By passing a text * edit a a text edit processor the ownership of the edit is transfered to the text edit * processors. Clients must not modify the edit (e.g adding new children) any longer. * @param style {@link TextEdit#NONE}, {@link TextEdit#CREATE_UNDO} or * {@link TextEdit#UPDATE_REGIONS}) */ public this(IDocument document, TextEdit root, int style) { super(document, root, style); } /* * @see dwtx.text.edits.TextEditProcessor#performEdits() */ public UndoEdit performEdits() { IDocument document= getDocument(); if (!( cast(IDocumentExtension4)document )) return super.performEdits(); IDocumentExtension4 extension= cast(IDocumentExtension4) document; bool isLargeEdit= isLargeEdit(getRoot()); DocumentRewriteSessionType type= isLargeEdit ? DocumentRewriteSessionType.UNRESTRICTED : DocumentRewriteSessionType.UNRESTRICTED_SMALL; DocumentRewriteSession session= extension.startRewriteSession(type); try { return super.performEdits(); } finally { extension.stopRewriteSession(session); } } /** * Returns <code>true</code> if the passed edit is considered <em>large</em>, * <code>false</code> otherwise. * * @param edit the edit to check * @return <code>true</code> if <code>edit</code> is considered <em>large</em>, * <code>false</code> otherwise * @since 3.3 */ public static bool isLargeEdit(TextEdit edit) { SizeVisitor sizeVisitor= new SizeVisitor(); edit.accept(sizeVisitor); return sizeVisitor.fSize > THRESHOLD; } }