+++ /dev/null
-/**********************************************************************
- Copyright (c) 2000, 2002 IBM Corp. and others.
- All rights reserved. This program and the accompanying materials
- are made available under the terms of the Common Public License v1.0
- which accompanies this distribution, and is available at
- http://www.eclipse.org/legal/cpl-v10.html
-
- Contributors:
- IBM Corporation - Initial implementation
- www.phpeclipse.de
- **********************************************************************/
-package net.sourceforge.phpeclipse.phpeditor.php;
-
-import net.sourceforge.phpdt.internal.compiler.parser.Scanner;
-
-import org.eclipse.jface.text.BadLocationException;
-import org.eclipse.jface.text.IDocument;
-import org.eclipse.jface.text.ITextDoubleClickStrategy;
-import org.eclipse.jface.text.ITextViewer;
-
-/**
- * Double click strategy aware of PHP identifier syntax rules.
- */
-public class PHPDoubleClickSelector implements ITextDoubleClickStrategy {
-
- protected ITextViewer fText;
-
- protected int fPos;
-
- protected int fStartPos;
-
- protected int fEndPos;
-
- protected static char[] fgBrackets = { '{', '}', '(', ')', '[', ']', '"',
- '"' };
-
- /*
- * Create a PHPDoubleClickSelector.
- */
- public PHPDoubleClickSelector() {
- super();
- }
-
- /*
- * (non-Javadoc) Method declared on ITextDoubleClickStrategy
- */
- public void doubleClicked(ITextViewer text) {
-
- fPos = text.getSelectedRange().x;
-
- if (fPos < 0)
- return;
-
- fText = text;
-
- if (!selectBracketBlock())
- selectWord();
- }
-
- /**
- * Match the brackets at the current selection. Return true if successful,
- * false otherwise.
- */
- protected boolean matchBracketsAt() {
-
- char prevChar, nextChar;
-
- int i;
- int bracketIndex1 = fgBrackets.length;
- int bracketIndex2 = fgBrackets.length;
-
- fStartPos = -1;
- fEndPos = -1;
-
- // get the chars preceding and following the start position
- try {
-
- IDocument doc = fText.getDocument();
-
- prevChar = doc.getChar(fPos - 1);
- nextChar = doc.getChar(fPos);
-
- // is the char either an open or close bracket?
- for (i = 0; i < fgBrackets.length; i = i + 2) {
- if (prevChar == fgBrackets[i]) {
- fStartPos = fPos - 1;
- bracketIndex1 = i;
- }
- }
- for (i = 1; i < fgBrackets.length; i = i + 2) {
- if (nextChar == fgBrackets[i]) {
- fEndPos = fPos;
- bracketIndex2 = i;
- }
- }
-
- if (fStartPos > -1 && bracketIndex1 < bracketIndex2) {
- fEndPos = searchForClosingBracket(fStartPos, prevChar,
- fgBrackets[bracketIndex1 + 1], doc);
- if (fEndPos > -1)
- return true;
- else
- fStartPos = -1;
- } else if (fEndPos > -1) {
- fStartPos = searchForOpenBracket(fEndPos,
- fgBrackets[bracketIndex2 - 1], nextChar, doc);
- if (fStartPos > -1)
- return true;
- else
- fEndPos = -1;
- }
-
- } catch (BadLocationException x) {
- }
-
- return false;
- }
-
- /**
- * Select the word at the current selection. Return true if successful,
- * false otherwise.
- */
- protected boolean matchWord() {
-
- IDocument doc = fText.getDocument();
-
- try {
-
- int pos = fPos;
- char c;
-
- while (pos >= 0) {
- c = doc.getChar(pos);
- if (!Scanner.isPHPIdentifierPart(c) && (c != '$')) {
- break;
- }
- --pos;
- }
-
- fStartPos = pos;
-
- pos = fPos;
- int length = doc.getLength();
-
- while (pos < length) {
- c = doc.getChar(pos);
- if (!Scanner.isPHPIdentifierPart(c) && (c != '$'))
- break;
- ++pos;
- }
-
- fEndPos = pos;
-
- return true;
-
- } catch (BadLocationException x) {
- }
-
- return false;
- }
-
- /**
- * Returns the position of the closing bracket after startPosition.
- *
- * @returns the location of the closing bracket.
- * @param startPosition -
- * the beginning position
- * @param openBracket -
- * the character that represents the open bracket
- * @param closeBracket -
- * the character that represents the close bracket
- * @param document -
- * the document being searched
- */
- protected int searchForClosingBracket(int startPosition, char openBracket,
- char closeBracket, IDocument document) throws BadLocationException {
- int stack = 1;
- int closePosition = startPosition + 1;
- int length = document.getLength();
- char nextChar;
-
- while (closePosition < length && stack > 0) {
- nextChar = document.getChar(closePosition);
- if (nextChar == openBracket && nextChar != closeBracket)
- stack++;
- else if (nextChar == closeBracket)
- stack--;
- closePosition++;
- }
-
- if (stack == 0)
- return closePosition - 1;
- else
- return -1;
-
- }
-
- /**
- * Returns the position of the open bracket before startPosition.
- *
- * @returns the location of the starting bracket.
- * @param startPosition -
- * the beginning position
- * @param openBracket -
- * the character that represents the open bracket
- * @param closeBracket -
- * the character that represents the close bracket
- * @param document -
- * the document being searched
- */
- protected int searchForOpenBracket(int startPosition, char openBracket,
- char closeBracket, IDocument document) throws BadLocationException {
- int stack = 1;
- int openPos = startPosition - 1;
- char nextChar;
-
- while (openPos >= 0 && stack > 0) {
- nextChar = document.getChar(openPos);
- if (nextChar == closeBracket && nextChar != openBracket)
- stack++;
- else if (nextChar == openBracket)
- stack--;
- openPos--;
- }
-
- if (stack == 0)
- return openPos + 1;
- else
- return -1;
- }
-
- /**
- * Select the area between the selected bracket and the closing bracket.
- * Return true if successful.
- */
- protected boolean selectBracketBlock() {
- if (matchBracketsAt()) {
-
- if (fStartPos == fEndPos)
- fText.setSelectedRange(fStartPos, 0);
- else
- fText.setSelectedRange(fStartPos + 1, fEndPos - fStartPos - 1);
-
- return true;
- }
- return false;
- }
-
- /**
- * Select the word at the current selection.
- */
- protected void selectWord() {
- if (matchWord()) {
-
- if (fStartPos == fEndPos)
- fText.setSelectedRange(fStartPos, 0);
- else
- fText.setSelectedRange(fStartPos + 1, fEndPos - fStartPos - 1);
- }
- }
-}
git://secure.phpeclipse.com / phpeclipse.git / blobdiff