| /******************************************************************************* |
| * Copyright (c) 2001, 2004 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 |
| * Jens Lukowski/Innoopract - initial renaming/restructuring |
| * |
| *******************************************************************************/ |
| package org.eclipse.wst.xml.ui.doubleclick; |
| |
| import org.eclipse.jface.text.DefaultTextDoubleClickStrategy; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.wst.sse.core.IStructuredModel; |
| import org.eclipse.wst.sse.core.StructuredModelManager; |
| import org.eclipse.wst.sse.core.text.IStructuredDocumentRegion; |
| import org.eclipse.wst.sse.core.text.ITextRegion; |
| import org.eclipse.wst.sse.ui.StructuredTextViewer; |
| import org.eclipse.wst.xml.core.parser.XMLRegionContext; |
| import org.w3c.dom.Node; |
| |
| |
| public class XMLDoubleClickStrategy extends DefaultTextDoubleClickStrategy { |
| protected static final char DOUBLE_QUOTE = '\"'; |
| protected static final char SINGLE_QUOTE = '\''; |
| protected static final char SPACE = ' '; |
| protected int fCaretPosition = -1; |
| protected int fDoubleClickCount = 0; |
| protected Node fNode = null; |
| protected IStructuredDocumentRegion fStructuredDocumentRegion = null; |
| protected String fStructuredDocumentRegionText = ""; //$NON-NLS-1$ |
| protected IStructuredModel fStructuredModel = null; |
| protected StructuredTextViewer fStructuredTextViewer; |
| protected ITextRegion fTextRegion = null; |
| |
| public void doubleClicked(ITextViewer textViewer) { |
| if (textViewer instanceof StructuredTextViewer) { |
| fStructuredTextViewer = (StructuredTextViewer) textViewer; |
| try { |
| fStructuredModel = StructuredModelManager.getModelManager().getExistingModelForRead(fStructuredTextViewer.getDocument()); |
| |
| if (fStructuredModel != null) { |
| int caretPosition = textViewer.getSelectedRange().x; |
| if (caretPosition < 0) |
| return; |
| |
| fNode = (Node) fStructuredModel.getIndexedRegion(caretPosition); |
| if (fNode == null) |
| return; |
| |
| updateDoubleClickCount(caretPosition); |
| updateStructuredDocumentRegion(); |
| updateTextRegion(); |
| |
| if (fNode.getNodeType() == Node.TEXT_NODE) |
| processTextDoubleClicked(); |
| else |
| processElementDoubleClicked(); |
| } |
| } finally { |
| if (fStructuredModel != null) |
| fStructuredModel.releaseFromRead(); |
| } |
| } |
| } |
| |
| protected Point getWord(String string, int cursor) { |
| if (string == null) |
| return null; |
| |
| int wordStart = 0; |
| int wordEnd = string.length(); |
| |
| wordStart = string.lastIndexOf(SPACE, cursor - 1); |
| int temp = string.lastIndexOf(SINGLE_QUOTE, cursor - 1); |
| wordStart = Math.max(wordStart, temp); |
| temp = string.lastIndexOf(DOUBLE_QUOTE, cursor - 1); |
| wordStart = Math.max(wordStart, temp); |
| if (wordStart == -1) |
| wordStart = cursor; |
| else |
| wordStart++; |
| |
| wordEnd = string.indexOf(SPACE, cursor); |
| if (wordEnd == -1) |
| wordEnd = string.length(); |
| temp = string.indexOf(SINGLE_QUOTE, cursor); |
| if (temp == -1) |
| temp = string.length(); |
| wordEnd = Math.min(wordEnd, temp); |
| temp = string.indexOf(DOUBLE_QUOTE, cursor); |
| if (temp == -1) |
| temp = string.length(); |
| wordEnd = Math.min(wordEnd, temp); |
| if (wordEnd == string.length()) |
| wordEnd = cursor; |
| |
| if ((wordStart == wordEnd) && !isQuoted(string)) { |
| wordStart = 0; |
| wordEnd = string.length(); |
| } |
| |
| return new Point(wordStart, wordEnd); |
| } |
| |
| protected boolean isQuoted(String string) { |
| if ((string == null) || (string.length() < 2)) |
| return false; |
| |
| int lastIndex = string.length() - 1; |
| char firstChar = string.charAt(0); |
| char lastChar = string.charAt(lastIndex); |
| |
| return (((firstChar == SINGLE_QUOTE) && (lastChar == SINGLE_QUOTE)) || ((firstChar == DOUBLE_QUOTE) && (lastChar == DOUBLE_QUOTE))); |
| } |
| |
| protected void processElementAttrEqualsDoubleClicked2Times() { |
| int prevRegionOffset = fStructuredDocumentRegion.getStartOffset(fTextRegion) - 1; |
| ITextRegion prevRegion = fStructuredDocumentRegion.getRegionAtCharacterOffset(prevRegionOffset); |
| int nextRegionOffset = fStructuredDocumentRegion.getEndOffset(fTextRegion); |
| ITextRegion nextRegion = fStructuredDocumentRegion.getRegionAtCharacterOffset(nextRegionOffset); |
| |
| if ((prevRegion != null) && (prevRegion.getType() == XMLRegionContext.XML_TAG_ATTRIBUTE_NAME) && (nextRegion != null) && (nextRegion.getType() == XMLRegionContext.XML_TAG_ATTRIBUTE_VALUE)) { |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStartOffset(prevRegion), nextRegion.getTextEnd() - prevRegion.getStart()); |
| } |
| } |
| |
| protected void processElementAttrNameDoubleClicked2Times() { |
| int nextRegionOffset = fStructuredDocumentRegion.getEndOffset(fTextRegion); |
| ITextRegion nextRegion = fStructuredDocumentRegion.getRegionAtCharacterOffset(nextRegionOffset); |
| |
| if (nextRegion != null) { |
| nextRegionOffset = fStructuredDocumentRegion.getEndOffset(nextRegion); |
| nextRegion = fStructuredDocumentRegion.getRegionAtCharacterOffset(nextRegionOffset); |
| if ((nextRegion != null) && (nextRegion.getType() == XMLRegionContext.XML_TAG_ATTRIBUTE_VALUE)) { |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStartOffset(fTextRegion), nextRegion.getTextEnd() - fTextRegion.getStart()); |
| } else { |
| // attribute has no value |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStart(), fStructuredDocumentRegion.getLength()); |
| fDoubleClickCount = 0; |
| } |
| } |
| } |
| |
| protected void processElementAttrValueDoubleClicked() { |
| String regionText = fStructuredDocumentRegion.getText(fTextRegion); |
| |
| if (fDoubleClickCount == 1) { |
| Point word = getWord(regionText, fCaretPosition - fStructuredDocumentRegion.getStartOffset(fTextRegion)); |
| if (word.x == word.y) { // no word found; select whole region |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStartOffset(fTextRegion), regionText.length()); |
| fDoubleClickCount++; |
| } else |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStartOffset(fTextRegion) + word.x, word.y - word.x); |
| } else if (fDoubleClickCount == 2) { |
| if (isQuoted(regionText)) { |
| // ==> // Point word = getWord(regionText, fCaretPosition - |
| // fStructuredDocumentRegion.getStartOffset(fTextRegion)); |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStartOffset(fTextRegion), regionText.length()); |
| } else |
| processElementAttrValueDoubleClicked2Times(); |
| } else if (fDoubleClickCount == 3) { |
| if (isQuoted(regionText)) |
| processElementAttrValueDoubleClicked2Times(); |
| else { |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStart(), fStructuredDocumentRegion.getLength()); |
| fDoubleClickCount = 0; |
| } |
| } else { // fDoubleClickCount == 4 |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStart(), fStructuredDocumentRegion.getLength()); |
| fDoubleClickCount = 0; |
| } |
| } |
| |
| protected void processElementAttrValueDoubleClicked2Times() { |
| int prevRegionOffset = fStructuredDocumentRegion.getStartOffset(fTextRegion) - 1; |
| ITextRegion prevRegion = fStructuredDocumentRegion.getRegionAtCharacterOffset(prevRegionOffset); |
| |
| if (prevRegion != null) { |
| prevRegionOffset = fStructuredDocumentRegion.getStartOffset(prevRegion) - 1; |
| prevRegion = fStructuredDocumentRegion.getRegionAtCharacterOffset(prevRegionOffset); |
| if ((prevRegion != null) && (prevRegion.getType() == XMLRegionContext.XML_TAG_ATTRIBUTE_NAME)) { |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStartOffset(prevRegion), fTextRegion.getTextEnd() - prevRegion.getStart()); |
| } |
| } |
| } |
| |
| protected void processElementDoubleClicked() { |
| if (fTextRegion.getType() == XMLRegionContext.XML_TAG_ATTRIBUTE_VALUE) |
| processElementAttrValueDoubleClicked(); // special handling for |
| // XML_TAG_ATTRIBUTE_VALUE |
| else { |
| if (fDoubleClickCount == 1) { |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStart() + fTextRegion.getStart(), fTextRegion.getTextLength()); |
| } else if (fDoubleClickCount == 2) { |
| if (fTextRegion.getType() == XMLRegionContext.XML_TAG_ATTRIBUTE_NAME) |
| processElementAttrNameDoubleClicked2Times(); |
| else if (fTextRegion.getType() == XMLRegionContext.XML_TAG_ATTRIBUTE_EQUALS) |
| processElementAttrEqualsDoubleClicked2Times(); |
| else { |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStart(), fStructuredDocumentRegion.getLength()); |
| fDoubleClickCount = 0; |
| } |
| } else { // fDoubleClickCount == 3 |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStart(), fStructuredDocumentRegion.getLength()); |
| fDoubleClickCount = 0; |
| } |
| } |
| } |
| |
| protected void processTextDoubleClicked() { |
| if (fDoubleClickCount == 1) { |
| super.doubleClicked(fStructuredTextViewer); |
| |
| Point selectedRange = fStructuredTextViewer.getSelectedRange(); |
| if ((selectedRange.x == fStructuredDocumentRegion.getStartOffset(fTextRegion)) && (selectedRange.y == fTextRegion.getTextLength())) |
| // only one word in region, skip one level of double click |
| // selection |
| fDoubleClickCount++; |
| } else if (fDoubleClickCount == 2) { |
| if (fTextRegion.getType() == XMLRegionContext.UNDEFINED) { |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStart(), fStructuredDocumentRegion.getLength()); |
| fDoubleClickCount = 0; |
| } else { |
| if (isQuoted(fStructuredDocumentRegion.getFullText(fTextRegion))) |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStartOffset(fTextRegion) + 1, fTextRegion.getTextLength() - 2); |
| else |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStartOffset(fTextRegion), fTextRegion.getTextLength()); |
| } |
| } else { |
| if ((fDoubleClickCount == 3) && isQuoted(fStructuredDocumentRegion.getFullText(fTextRegion))) |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStartOffset(fTextRegion), fTextRegion.getTextLength()); |
| else { |
| if ((fDoubleClickCount == 3) && isQuoted(fStructuredDocumentRegionText)) |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStart() + 1, fStructuredDocumentRegion.getLength() - 2); |
| else { |
| fStructuredTextViewer.setSelectedRange(fStructuredDocumentRegion.getStart(), fStructuredDocumentRegion.getLength()); |
| fDoubleClickCount = 0; |
| } |
| } |
| } |
| } |
| |
| public void setModel(IStructuredModel structuredModel) { |
| fStructuredModel = structuredModel; |
| } |
| |
| protected void updateDoubleClickCount(int caretPosition) { |
| if (fCaretPosition == caretPosition) { |
| if (fStructuredDocumentRegion != null) |
| fDoubleClickCount++; |
| else |
| fDoubleClickCount = 1; |
| } else { |
| fCaretPosition = caretPosition; |
| fDoubleClickCount = 1; |
| } |
| } |
| |
| protected void updateStructuredDocumentRegion() { |
| fStructuredDocumentRegion = fStructuredModel.getStructuredDocument().getRegionAtCharacterOffset(fCaretPosition); |
| if (fStructuredDocumentRegion != null) |
| fStructuredDocumentRegionText = fStructuredDocumentRegion.getText(); |
| else |
| fStructuredDocumentRegionText = ""; //$NON-NLS-1$ |
| } |
| |
| protected void updateTextRegion() { |
| if (fStructuredDocumentRegion != null) { |
| fTextRegion = fStructuredDocumentRegion.getRegionAtCharacterOffset(fCaretPosition); |
| // if fTextRegion is null, it means we are at just past the last |
| // fStructuredDocumentRegion, |
| // at the very end of the document, so we'll use the last text |
| // region in the document |
| if (fTextRegion == null) { |
| fTextRegion = fStructuredDocumentRegion.getRegionAtCharacterOffset(fCaretPosition - 1); |
| } |
| } else |
| fTextRegion = null; |
| } |
| } |
