| /******************************************************************************* |
| * Copyright (c) 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 |
| * |
| *******************************************************************************/ |
| package org.eclipse.jst.jsp.ui.internal.contentassist; |
| |
| import org.eclipse.jdt.core.CompletionProposal; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.JavaCore; |
| import org.eclipse.jdt.core.Signature; |
| import org.eclipse.jdt.core.formatter.DefaultCodeFormatterConstants; |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.Position; |
| 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.LinkedModeUI.ExitFlags; |
| import org.eclipse.jface.text.link.LinkedModeUI.IExitPolicy; |
| import org.eclipse.jface.text.link.LinkedPosition; |
| import org.eclipse.jface.text.link.LinkedPositionGroup; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.events.VerifyEvent; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.ui.texteditor.link.EditorLinkedModeUI; |
| |
| public class JSPMethodCompletionProposal extends JSPCompletionProposal { |
| |
| private CompletionProposal fProposal; |
| private IJavaProject fProject; |
| private FormatterPrefs fFormatterPrefs; |
| |
| private static final String LPAREN = "("; //$NON-NLS-1$ |
| private static final String RPAREN = ")"; //$NON-NLS-1$ |
| private static final String COMMA = ","; //$NON-NLS-1$ |
| private static final String SPACE = " "; //$NON-NLS-1$ |
| |
| private IRegion fSelectedRegion; |
| |
| public JSPMethodCompletionProposal(CompletionProposal proposal, IJavaProject project, String replacementString, int replacementOffset, int replacementLength, int cursorPosition, Image image, String displayString, IContextInformation contextInformation, String additionalProposalInfo, int relevance, boolean updateReplacementLengthOnValidate) { |
| super(replacementString, replacementOffset, replacementLength, cursorPosition, image, displayString, contextInformation, additionalProposalInfo, relevance, updateReplacementLengthOnValidate); |
| fProposal = proposal; |
| fProject = project; |
| } |
| |
| public void apply(ITextViewer viewer, char trigger, int stateMask, int offset) { |
| Position[] positions = null; |
| FormatterPrefs formatterPrefs = getFormatterPrefs(); |
| StringBuffer buffer = new StringBuffer(); |
| |
| buffer.append(fProposal.getName()); |
| |
| if (formatterPrefs.beforeOpeningParen) |
| buffer.append(SPACE); |
| |
| buffer.append(LPAREN); |
| |
| if (formatterPrefs.afterOpeningParen) |
| buffer.append(SPACE); |
| |
| if (Signature.getParameterCount(fProposal.getSignature()) > 0) { |
| char[][] parameters = fProposal.findParameterNames(null); |
| if (parameters != null) { |
| positions = new Position[parameters.length]; |
| |
| int base = getReplacementOffset(); |
| for (int i = 0; i < parameters.length; i++) { |
| if (i != 0) { |
| if (formatterPrefs.beforeComma) |
| buffer.append(SPACE); |
| |
| buffer.append(COMMA); |
| |
| if (formatterPrefs.afterComma) |
| buffer.append(SPACE); |
| } |
| Position position = new Position(0,0); |
| position.setOffset(base + buffer.length()); |
| position.setLength(parameters[i].length); |
| positions[i] = position; |
| buffer.append(parameters[i]); |
| } |
| } |
| } |
| |
| if (formatterPrefs.beforeClosingParen) |
| buffer.append(SPACE); |
| |
| buffer.append(RPAREN); |
| setReplacementString(buffer.toString()); |
| |
| super.apply(viewer, trigger, stateMask, offset); |
| |
| try { |
| if (positions != null) { |
| LinkedModeModel model = new LinkedModeModel(); |
| |
| for (int i = 0; i < positions.length; i++) { |
| LinkedPositionGroup group = new LinkedPositionGroup(); |
| Position position = positions[i]; |
| group.addPosition(new LinkedPosition(viewer.getDocument(), position.getOffset(), position.getLength(), i)); |
| model.addGroup(group); |
| } |
| model.forceInstall(); |
| |
| LinkedModeUI ui = new EditorLinkedModeUI(model, viewer); |
| ui.setExitPosition(viewer, getReplacementOffset() + getReplacementString().length(), 0, Integer.MAX_VALUE); |
| ui.setExitPolicy(new ExitPolicy(')', viewer.getDocument())); |
| ui.setCyclingMode(LinkedModeUI.CYCLE_WHEN_NO_PARENT); |
| ui.setDoContextInfo(true); |
| ui.enter(); |
| fSelectedRegion = ui.getSelectedRegion(); |
| } |
| } |
| catch (BadLocationException e) { |
| |
| } |
| } |
| |
| protected final FormatterPrefs getFormatterPrefs() { |
| if (fFormatterPrefs == null) |
| fFormatterPrefs= new FormatterPrefs(fProject); |
| return fFormatterPrefs; |
| } |
| |
| /* Copied from org.eclipse.jdt.internal.ui.text.java.AbstractJavaCompletionProposal.ExitPolicy */ |
| protected static final class ExitPolicy implements IExitPolicy { |
| |
| final char fExitCharacter; |
| private final IDocument fDocument; |
| |
| public ExitPolicy(char exitCharacter, IDocument document) { |
| fExitCharacter= exitCharacter; |
| fDocument= document; |
| } |
| |
| /* |
| * @see org.eclipse.jdt.internal.ui.text.link.LinkedPositionUI.ExitPolicy#doExit(org.eclipse.jdt.internal.ui.text.link.LinkedPositionManager, org.eclipse.swt.events.VerifyEvent, int, int) |
| */ |
| public ExitFlags doExit(LinkedModeModel environment, VerifyEvent event, int offset, int length) { |
| |
| if (event.character == fExitCharacter) { |
| if (environment.anyPositionContains(offset)) |
| return new ExitFlags(ILinkedModeListener.UPDATE_CARET, false); |
| else |
| return new ExitFlags(ILinkedModeListener.UPDATE_CARET, true); |
| } |
| |
| switch (event.character) { |
| case ';': |
| return new ExitFlags(ILinkedModeListener.NONE, true); |
| case SWT.CR: |
| // when entering an anonymous class as a parameter, we don't want |
| // to jump after the parenthesis when return is pressed |
| if (offset > 0) { |
| try { |
| if (fDocument.getChar(offset - 1) == '{') |
| return new ExitFlags(ILinkedModeListener.EXIT_ALL, true); |
| } catch (BadLocationException e) { |
| } |
| } |
| return null; |
| default: |
| return null; |
| } |
| } |
| |
| } |
| |
| /* Copied from org.eclipse.jdt.internal.ui.text.java.LazyJavaCompletionProposal.FormatterPrefs */ |
| protected static final class FormatterPrefs { |
| /* Methods & constructors */ |
| public final boolean beforeOpeningParen; |
| public final boolean afterOpeningParen; |
| public final boolean beforeComma; |
| public final boolean afterComma; |
| public final boolean beforeClosingParen; |
| public final boolean inEmptyList; |
| |
| /* type parameters */ |
| public final boolean beforeOpeningBracket; |
| public final boolean afterOpeningBracket; |
| public final boolean beforeTypeArgumentComma; |
| public final boolean afterTypeArgumentComma; |
| public final boolean beforeClosingBracket; |
| |
| FormatterPrefs(IJavaProject project) { |
| beforeOpeningParen = getCoreOption(project, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_PAREN_IN_METHOD_INVOCATION, false); |
| afterOpeningParen = getCoreOption(project, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_OPENING_PAREN_IN_METHOD_INVOCATION, false); |
| beforeComma = getCoreOption(project, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_COMMA_IN_METHOD_INVOCATION_ARGUMENTS, false); |
| afterComma = getCoreOption(project, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_COMMA_IN_METHOD_INVOCATION_ARGUMENTS, true); |
| beforeClosingParen = getCoreOption(project, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_CLOSING_PAREN_IN_METHOD_INVOCATION, false); |
| inEmptyList = getCoreOption(project, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BETWEEN_EMPTY_PARENS_IN_METHOD_INVOCATION, false); |
| |
| beforeOpeningBracket = getCoreOption(project, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_ANGLE_BRACKET_IN_PARAMETERIZED_TYPE_REFERENCE, false); |
| afterOpeningBracket = getCoreOption(project, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_OPENING_ANGLE_BRACKET_IN_PARAMETERIZED_TYPE_REFERENCE, false); |
| beforeTypeArgumentComma = getCoreOption(project, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_COMMA_IN_PARAMETERIZED_TYPE_REFERENCE, false); |
| afterTypeArgumentComma = getCoreOption(project, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_COMMA_IN_PARAMETERIZED_TYPE_REFERENCE, true); |
| beforeClosingBracket = getCoreOption(project, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_CLOSING_ANGLE_BRACKET_IN_PARAMETERIZED_TYPE_REFERENCE, false); |
| } |
| |
| protected final boolean getCoreOption(IJavaProject project, String key, boolean def) { |
| String option = getCoreOption(project, key); |
| if (JavaCore.INSERT.equals(option)) |
| return true; |
| if (JavaCore.DO_NOT_INSERT.equals(option)) |
| return false; |
| return def; |
| } |
| |
| protected final String getCoreOption(IJavaProject project, String key) { |
| if (project == null) |
| return JavaCore.getOption(key); |
| return project.getOption(key, true); |
| } |
| } |
| |
| public Point getSelection(IDocument document) { |
| if (fSelectedRegion != null) { |
| return new Point(fSelectedRegion.getOffset(), fSelectedRegion.getLength()); |
| } |
| return super.getSelection(document); |
| } |
| } |