| /******************************************************************************* |
| * Copyright (c) 2000, 2020 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.text.template.contentassist; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.graphics.TextStyle; |
| import org.eclipse.swt.widgets.Shell; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.jface.preference.JFacePreferences; |
| import org.eclipse.jface.resource.JFaceResources; |
| import org.eclipse.jface.viewers.StyledCellLabelProvider; |
| import org.eclipse.jface.viewers.StyledString; |
| import org.eclipse.jface.viewers.StyledString.Styler; |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.BadPositionCategoryException; |
| import org.eclipse.jface.text.Document; |
| import org.eclipse.jface.text.DocumentEvent; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IInformationControlCreator; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.IRewriteTarget; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.ITextViewerExtension; |
| import org.eclipse.jface.text.Position; |
| import org.eclipse.jface.text.Region; |
| import org.eclipse.jface.text.contentassist.BoldStylerProvider; |
| import org.eclipse.jface.text.contentassist.ICompletionProposal; |
| import org.eclipse.jface.text.contentassist.ICompletionProposalExtension2; |
| import org.eclipse.jface.text.contentassist.ICompletionProposalExtension3; |
| import org.eclipse.jface.text.contentassist.ICompletionProposalExtension4; |
| import org.eclipse.jface.text.contentassist.ICompletionProposalExtension6; |
| import org.eclipse.jface.text.contentassist.ICompletionProposalExtension7; |
| import org.eclipse.jface.text.contentassist.IContextInformation; |
| import org.eclipse.jface.text.link.ILinkedModeListener; |
| import org.eclipse.jface.text.link.LinkedModeModel; |
| import org.eclipse.jface.text.link.LinkedModeUI; |
| import org.eclipse.jface.text.link.LinkedPosition; |
| import org.eclipse.jface.text.link.LinkedPositionGroup; |
| import org.eclipse.jface.text.link.ProposalPosition; |
| import org.eclipse.jface.text.source.LineRange; |
| import org.eclipse.jface.text.templates.DocumentTemplateContext; |
| import org.eclipse.jface.text.templates.GlobalTemplateVariables; |
| import org.eclipse.jface.text.templates.Template; |
| import org.eclipse.jface.text.templates.TemplateBuffer; |
| import org.eclipse.jface.text.templates.TemplateContext; |
| import org.eclipse.jface.text.templates.TemplateException; |
| import org.eclipse.jface.text.templates.TemplateVariable; |
| |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.part.IWorkbenchPartOrientation; |
| |
| import org.eclipse.ui.texteditor.link.EditorLinkedModeUI; |
| |
| import org.eclipse.jdt.core.compiler.CharOperation; |
| import org.eclipse.jdt.core.search.SearchPattern; |
| |
| import org.eclipse.jdt.internal.core.manipulation.JavaManipulationPlugin; |
| import org.eclipse.jdt.internal.corext.template.java.JavaContext; |
| import org.eclipse.jdt.internal.corext.template.java.JavaDocContext; |
| import org.eclipse.jdt.internal.corext.util.Messages; |
| import org.eclipse.jdt.internal.corext.util.Strings; |
| |
| import org.eclipse.jdt.ui.text.java.IJavaCompletionProposal; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.javaeditor.EditorHighlightingSynchronizer; |
| import org.eclipse.jdt.internal.ui.javaeditor.IndentUtil; |
| import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor; |
| import org.eclipse.jdt.internal.ui.util.ExceptionHandler; |
| |
| /** |
| * A template proposal. |
| */ |
| public class TemplateProposal |
| implements IJavaCompletionProposal, ICompletionProposalExtension2, ICompletionProposalExtension3, ICompletionProposalExtension4, ICompletionProposalExtension6, ICompletionProposalExtension7 { |
| |
| private final Template fTemplate; |
| private final TemplateContext fContext; |
| private final Image fImage; |
| private final IRegion fRegion; |
| private int fRelevance; |
| private boolean fIsSubstringMatch; |
| |
| private IRegion fSelectedRegion; // initialized by apply() |
| private StyledString fDisplayString; |
| private InclusivePositionUpdater fUpdater; |
| |
| /** |
| * Creates a template proposal with a template and its context. |
| * |
| * @param template the template |
| * @param context the context in which the template was requested. |
| * @param region the region this proposal is applied to |
| * @param image the icon of the proposal. |
| */ |
| public TemplateProposal(Template template, TemplateContext context, IRegion region, Image image) { |
| Assert.isNotNull(template); |
| Assert.isNotNull(context); |
| Assert.isNotNull(region); |
| |
| fTemplate= template; |
| fContext= context; |
| fImage= image; |
| fRegion= region; |
| |
| fDisplayString= null; |
| |
| fRelevance= computeRelevance(); |
| } |
| |
| /** |
| * Computes the relevance to match the relevance values generated by the |
| * core content assistant. |
| * |
| * @return a sensible relevance value. |
| */ |
| private int computeRelevance() { |
| // see org.eclipse.jdt.internal.codeassist.RelevanceConstants |
| final int R_DEFAULT= 30; |
| final int R_INTERESTING= 5; |
| final int R_CASE= 10; |
| final int R_NON_RESTRICTED= 3; |
| final int R_EXACT_NAME = 4; |
| final int R_INLINE_TAG = 31; |
| |
| int base= R_DEFAULT + R_INTERESTING + R_NON_RESTRICTED; |
| boolean isSubstring= false; |
| try { |
| if (fContext instanceof DocumentTemplateContext) { |
| DocumentTemplateContext templateContext= (DocumentTemplateContext) fContext; |
| IDocument document= templateContext.getDocument(); |
| |
| String content= document.get(fRegion.getOffset(), fRegion.getLength()); |
| String templateName= fTemplate.getName(); |
| if (content.length() > 0 && templateName.startsWith(content)) |
| base += R_CASE; |
| if (templateName.equalsIgnoreCase(content)) |
| base += R_EXACT_NAME; |
| if (fContext instanceof JavaDocContext) |
| base += R_INLINE_TAG; |
| |
| String templateNameLC= templateName.toLowerCase(); |
| String contentLC= content.toLowerCase(); |
| isSubstring= content.length() > 0 && !templateNameLC.startsWith(contentLC) && templateNameLC.contains(contentLC); |
| } |
| } catch (BadLocationException e) { |
| // ignore - not a case sensitive match then |
| } |
| |
| // see CompletionProposalCollector.computeRelevance |
| // just under keywords, but better than packages |
| final int TEMPLATE_RELEVANCE= 1; |
| int rel= base * 16 + TEMPLATE_RELEVANCE; |
| return isSubstring ? rel - 400 : rel; |
| } |
| |
| /** |
| * Returns the template of this proposal. |
| * |
| * @return the template of this proposal |
| * @since 3.1 |
| */ |
| public final Template getTemplate() { |
| return fTemplate; |
| } |
| |
| /** |
| * Returns the context in which the template was requested. |
| * |
| * @return the context in which the template was requested |
| * @since 3.1 |
| */ |
| protected final TemplateContext getContext() { |
| return fContext; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @deprecated This method is no longer called by the framework and clients should overwrite |
| * {@link #apply(ITextViewer, char, int, int)} instead |
| */ |
| @Deprecated |
| @Override |
| public final void apply(IDocument document) { |
| // not called anymore |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#apply(org.eclipse.jface.text.ITextViewer, char, int, int) |
| */ |
| @Override |
| public void apply(ITextViewer viewer, char trigger, int stateMask, int offset) { |
| |
| IDocument document= viewer.getDocument(); |
| try { |
| fContext.setReadOnly(false); |
| int start; |
| TemplateBuffer templateBuffer; |
| try { |
| beginCompoundChange(viewer); |
| |
| int oldReplaceOffset= getReplaceOffset(); |
| try { |
| // this may already modify the document (e.g. add imports) |
| templateBuffer= fContext.evaluate(fTemplate); |
| } catch (TemplateException e1) { |
| fSelectedRegion= fRegion; |
| return; |
| } |
| |
| start= getReplaceOffset(); |
| int shift= start - oldReplaceOffset; |
| int end= Math.max(getReplaceEndOffset(), offset + shift); |
| |
| // insert template string |
| if (end > document.getLength()) |
| end= offset; |
| String templateString= templateBuffer.getString(); |
| document.replace(start, end - start, templateString); |
| } finally { |
| endCompoundChange(viewer); |
| } |
| |
| // translate positions |
| LinkedModeModel model= new LinkedModeModel(); |
| TemplateVariable[] variables= templateBuffer.getVariables(); |
| |
| MultiVariableGuess guess= fContext instanceof JavaContext ? ((JavaContext) fContext).getMultiVariableGuess() : null; |
| |
| boolean hasPositions= false; |
| for (int i= 0; i != variables.length; i++) { |
| TemplateVariable variable= variables[i]; |
| |
| if (variable.isUnambiguous()) |
| continue; |
| |
| LinkedPositionGroup group= new LinkedPositionGroup(); |
| |
| int[] offsets= variable.getOffsets(); |
| int length= variable.getLength(); |
| |
| LinkedPosition first; |
| if (guess != null && variable instanceof MultiVariable) { |
| first= new VariablePosition(document, offsets[0] + start, length, guess, (MultiVariable) variable); |
| guess.addSlave((VariablePosition) first); |
| } else { |
| String[] values= variable.getValues(); |
| ICompletionProposal[] proposals= new ICompletionProposal[values.length]; |
| for (int j= 0; j < values.length; j++) { |
| ensurePositionCategoryInstalled(document, model); |
| Position pos= new Position(offsets[0] + start, length); |
| document.addPosition(getCategory(), pos); |
| proposals[j]= new PositionBasedCompletionProposal(values[j], pos, length); |
| } |
| |
| if (proposals.length > 1) |
| first= new ProposalPosition(document, offsets[0] + start, length, proposals); |
| else |
| first= new LinkedPosition(document, offsets[0] + start, length); |
| } |
| |
| for (int j= 0; j != offsets.length; j++) |
| if (j == 0) |
| group.addPosition(first); |
| else |
| group.addPosition(new LinkedPosition(document, offsets[j] + start, length)); |
| |
| model.addGroup(group); |
| hasPositions= true; |
| } |
| |
| if (hasPositions) { |
| model.forceInstall(); |
| JavaEditor editor= getJavaEditor(); |
| if (editor != null) { |
| model.addLinkingListener(new EditorHighlightingSynchronizer(editor)); |
| } |
| |
| LinkedModeUI ui= new EditorLinkedModeUI(model, viewer); |
| ui.setExitPosition(viewer, getCaretOffset(templateBuffer) + start, 0, Integer.MAX_VALUE); |
| ui.enter(); |
| |
| fSelectedRegion= ui.getSelectedRegion(); |
| } else { |
| fSelectedRegion= new Region(getCaretOffset(templateBuffer) + start, 0); |
| } |
| |
| } catch (BadLocationException | BadPositionCategoryException e) { |
| JavaPlugin.log(e); |
| openErrorDialog(viewer.getTextWidget().getShell(), e); |
| fSelectedRegion= fRegion; |
| } |
| |
| } |
| |
| private void endCompoundChange(ITextViewer viewer) { |
| if (viewer instanceof ITextViewerExtension) { |
| ITextViewerExtension extension= (ITextViewerExtension) viewer; |
| IRewriteTarget target= extension.getRewriteTarget(); |
| target.endCompoundChange(); |
| } |
| } |
| |
| private void beginCompoundChange(ITextViewer viewer) { |
| if (viewer instanceof ITextViewerExtension) { |
| ITextViewerExtension extension= (ITextViewerExtension) viewer; |
| IRewriteTarget target= extension.getRewriteTarget(); |
| target.beginCompoundChange(); |
| } |
| } |
| |
| /** |
| * Returns the currently active java editor, or <code>null</code> if it |
| * cannot be determined. |
| * |
| * @return the currently active java editor, or <code>null</code> |
| */ |
| private JavaEditor getJavaEditor() { |
| IEditorPart part= JavaPlugin.getActivePage().getActiveEditor(); |
| if (part instanceof JavaEditor) |
| return (JavaEditor) part; |
| else |
| return null; |
| } |
| |
| private void ensurePositionCategoryInstalled(final IDocument document, LinkedModeModel model) { |
| if (!document.containsPositionCategory(getCategory())) { |
| document.addPositionCategory(getCategory()); |
| fUpdater= new InclusivePositionUpdater(getCategory()); |
| document.addPositionUpdater(fUpdater); |
| |
| model.addLinkingListener(new ILinkedModeListener() { |
| |
| /* |
| * @see org.eclipse.jface.text.link.ILinkedModeListener#left(org.eclipse.jface.text.link.LinkedModeModel, int) |
| */ |
| @Override |
| public void left(LinkedModeModel environment, int flags) { |
| ensurePositionCategoryRemoved(document); |
| } |
| |
| @Override |
| public void suspend(LinkedModeModel environment) {} |
| @Override |
| public void resume(LinkedModeModel environment, int flags) {} |
| }); |
| } |
| } |
| |
| private void ensurePositionCategoryRemoved(IDocument document) { |
| if (document.containsPositionCategory(getCategory())) { |
| try { |
| document.removePositionCategory(getCategory()); |
| } catch (BadPositionCategoryException e) { |
| // ignore |
| } |
| document.removePositionUpdater(fUpdater); |
| } |
| } |
| |
| private String getCategory() { |
| return "TemplateProposalCategory_" + toString(); //$NON-NLS-1$ |
| } |
| |
| private int getCaretOffset(TemplateBuffer buffer) { |
| |
| TemplateVariable[] variables= buffer.getVariables(); |
| for (int i= 0; i != variables.length; i++) { |
| TemplateVariable variable= variables[i]; |
| if (variable.getType().equals(GlobalTemplateVariables.Cursor.NAME)) |
| return variable.getOffsets()[0]; |
| } |
| |
| return buffer.getString().length(); |
| } |
| |
| /** |
| * Returns the offset of the range in the document that will be replaced by |
| * applying this template. |
| * |
| * @return the offset of the range in the document that will be replaced by |
| * applying this template |
| */ |
| protected final int getReplaceOffset() { |
| int start; |
| if (fContext instanceof DocumentTemplateContext) { |
| DocumentTemplateContext docContext = (DocumentTemplateContext)fContext; |
| start= docContext.getStart(); |
| } else { |
| start= fRegion.getOffset(); |
| } |
| return start; |
| } |
| |
| /** |
| * Returns the end offset of the range in the document that will be replaced |
| * by applying this template. |
| * |
| * @return the end offset of the range in the document that will be replaced |
| * by applying this template |
| */ |
| protected final int getReplaceEndOffset() { |
| int end; |
| if (fContext instanceof DocumentTemplateContext) { |
| DocumentTemplateContext docContext = (DocumentTemplateContext)fContext; |
| end= docContext.getEnd(); |
| } else { |
| end= fRegion.getOffset() + fRegion.getLength(); |
| } |
| return end; |
| } |
| |
| /* |
| * @see ICompletionProposal#getSelection(IDocument) |
| */ |
| @Override |
| public Point getSelection(IDocument document) { |
| return new Point(fSelectedRegion.getOffset(), fSelectedRegion.getLength()); |
| } |
| |
| /* |
| * @see ICompletionProposal#getAdditionalProposalInfo() |
| */ |
| @Override |
| public String getAdditionalProposalInfo() { |
| try { |
| fContext.setReadOnly(true); |
| TemplateBuffer templateBuffer; |
| try { |
| templateBuffer= fContext.evaluate(fTemplate); |
| } catch (TemplateException e) { |
| return null; |
| } |
| |
| IDocument document= new Document(templateBuffer.getString()); |
| IndentUtil.indentLines(document, new LineRange(0, document.getNumberOfLines()), null, null); |
| return document.get(); |
| |
| } catch (BadLocationException e) { |
| handleException(JavaPlugin.getActiveWorkbenchShell(), new CoreException(new Status(IStatus.ERROR, JavaPlugin.getPluginId(), IStatus.OK, "", e))); //$NON-NLS-1$ |
| return null; |
| } |
| } |
| |
| /* |
| * @see ICompletionProposal#getDisplayString() |
| */ |
| @Override |
| public String getDisplayString() { |
| return getStyledDisplayString().getString(); |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension6#getStyledDisplayString() |
| * @since 3.4 |
| */ |
| @Override |
| public StyledString getStyledDisplayString() { |
| if (fDisplayString == null) { |
| String[] arguments= new String[] { fTemplate.getName(), fTemplate.getDescription() }; |
| String decorated= Messages.format(TemplateContentAssistMessages.TemplateProposal_displayString, arguments); |
| StyledString string= new StyledString(fTemplate.getName(), StyledString.COUNTER_STYLER); |
| fDisplayString= StyledCellLabelProvider.styleDecoratedString(decorated, StyledString.QUALIFIER_STYLER, string); |
| } |
| return fDisplayString; |
| } |
| |
| public void setDisplayString(StyledString displayString) { |
| fDisplayString= displayString; |
| } |
| |
| @Override |
| public StyledString getStyledDisplayString(IDocument document, int offset, final BoldStylerProvider boldStylerProvider) { |
| StyledString styledDisplayString= new StyledString(); |
| styledDisplayString.append(getStyledDisplayString()); |
| int start= getPrefixCompletionStart(document, offset); |
| int patternLength= offset - start; |
| try { |
| String pattern= document.get(start, patternLength); |
| if (!pattern.isEmpty()) { |
| Styler styler= new Styler() { |
| @Override |
| public void applyStyles(TextStyle textStyle) { |
| textStyle.foreground= JFaceResources.getColorRegistry().get(JFacePreferences.COUNTER_COLOR); |
| textStyle.font= boldStylerProvider.getBoldFont(); |
| } |
| }; |
| String displayString= styledDisplayString.getString(); |
| boolean hasBracket= fContext instanceof JavaDocContext && displayString.indexOf('<') == 0; |
| if (hasBracket) { |
| displayString= displayString.substring(1); |
| if (pattern.indexOf('<') == 0) { |
| pattern= pattern.substring(1); |
| Strings.markMatchingRegions(styledDisplayString, 0, new int[] { 0, 1 }, styler); |
| } |
| } |
| int matchRule= SearchPattern.R_PREFIX_MATCH; |
| if (JavaManipulationPlugin.CODEASSIST_SUBSTRING_MATCH_ENABLED && CharOperation.substringMatch(pattern, displayString)) { |
| matchRule= SearchPattern.R_SUBSTRING_MATCH; |
| } |
| int[] matchingRegions= SearchPattern.getMatchingRegions(pattern, displayString, matchRule); |
| if (hasBracket && matchingRegions != null) { |
| for (int i= 0; i < matchingRegions.length; i+= 2) { |
| matchingRegions[i]++; |
| } |
| } |
| Strings.markMatchingRegions(styledDisplayString, 0, matchingRegions, styler); |
| } |
| } catch (BadLocationException e) { |
| // return styledDisplayString |
| } |
| return styledDisplayString; |
| } |
| |
| /* |
| * @see ICompletionProposal#getImage() |
| */ |
| @Override |
| public Image getImage() { |
| return fImage; |
| } |
| |
| /* |
| * @see ICompletionProposal#getContextInformation() |
| */ |
| @Override |
| public IContextInformation getContextInformation() { |
| return null; |
| } |
| |
| private void openErrorDialog(Shell shell, Exception e) { |
| MessageDialog.openError(shell, TemplateContentAssistMessages.TemplateEvaluator_error_title, e.getMessage()); |
| } |
| |
| private void handleException(Shell shell, CoreException e) { |
| ExceptionHandler.handle(e, shell, TemplateContentAssistMessages.TemplateEvaluator_error_title, null); |
| } |
| |
| /* |
| * @see IJavaCompletionProposal#getRelevance() |
| */ |
| @Override |
| public int getRelevance() { |
| return fIsSubstringMatch ? fRelevance - 400 : fRelevance; |
| } |
| |
| public void setRelevance(int relevance) { |
| fRelevance= relevance; |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension3#getInformationControlCreator() |
| */ |
| @Override |
| public IInformationControlCreator getInformationControlCreator() { |
| int orientation; |
| IEditorPart editor= getJavaEditor(); |
| if (editor instanceof IWorkbenchPartOrientation) |
| orientation= ((IWorkbenchPartOrientation)editor).getOrientation(); |
| else |
| orientation= SWT.LEFT_TO_RIGHT; |
| return new TemplateInformationControlCreator(orientation); |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#selected(org.eclipse.jface.text.ITextViewer, boolean) |
| */ |
| @Override |
| public void selected(ITextViewer viewer, boolean smartToggle) { |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#unselected(org.eclipse.jface.text.ITextViewer) |
| */ |
| @Override |
| public void unselected(ITextViewer viewer) { |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#validate(org.eclipse.jface.text.IDocument, int, org.eclipse.jface.text.DocumentEvent) |
| */ |
| @Override |
| public boolean validate(IDocument document, int offset, DocumentEvent event) { |
| try { |
| int replaceOffset= getReplaceOffset(); |
| if (offset >= replaceOffset) { |
| String content= document.get(replaceOffset, offset - replaceOffset).toLowerCase(); |
| String templateName= fTemplate.getName().toLowerCase(); |
| boolean isSubstringEnabled= JavaManipulationPlugin.CODEASSIST_SUBSTRING_MATCH_ENABLED; |
| boolean valid= false; |
| fIsSubstringMatch= false; |
| if (templateName.startsWith(content)) { |
| valid= true; |
| } else if (isSubstringEnabled && templateName.contains(content)) { |
| valid= true; |
| fIsSubstringMatch= true; |
| } |
| if (!valid && fContext instanceof JavaDocContext && templateName.startsWith("<")) { //$NON-NLS-1$ |
| if (templateName.startsWith(content, 1)) { |
| valid= true; |
| } else if (isSubstringEnabled && CharOperation.substringMatch(content.indexOf('<') == 0 ? content.substring(1) : content, templateName.substring(1))) { |
| valid= true; |
| fIsSubstringMatch= true; |
| } |
| } |
| return valid; |
| } |
| } catch (BadLocationException e) { |
| // concurrent modification - ignore |
| } |
| return false; |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension3#getReplacementString() |
| */ |
| @Override |
| public CharSequence getPrefixCompletionText(IDocument document, int completionOffset) { |
| // bug 114360 - don't make selection templates prefix-completable |
| if (isSelectionTemplate()) |
| return ""; //$NON-NLS-1$ |
| return fTemplate.getName(); |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension3#getReplacementOffset() |
| */ |
| @Override |
| public int getPrefixCompletionStart(IDocument document, int completionOffset) { |
| return getReplaceOffset(); |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension4#isAutoInsertable() |
| */ |
| @Override |
| public boolean isAutoInsertable() { |
| if (isSelectionTemplate()) |
| return false; |
| return fTemplate.isAutoInsertable(); |
| } |
| |
| /** |
| * Returns <code>true</code> if the proposal has a selection, e.g. will wrap some code. |
| * |
| * @return <code>true</code> if the proposals completion length is non zero |
| * @since 3.2 |
| */ |
| private boolean isSelectionTemplate() { |
| if (fContext instanceof DocumentTemplateContext) { |
| DocumentTemplateContext ctx= (DocumentTemplateContext) fContext; |
| if (ctx.getCompletionLength() > 0) |
| return true; |
| } |
| return false; |
| } |
| } |