xmldoubleclickstrategy.java

来自「一个eclipse插件源代码。用于web开发」· Java 代码 · 共 183 行

/*
 * $Header: /home/cvs/WEBPUMP2.0/WebPumpIDE_Src/WebPumpIDE/src/com/webpump/ui/bind/editors/XMLDoubleClickStrategy.java,v 1.1.1.1 2004/07/01 09:07:41 wang_j Exp $
 * $Revision: 1.1.1.1 $
 * $Date: 2004/07/01 09:07:41 $
 *
 * ====================================================================
 *
 * The NanJing HopeRun(IT-FOREST) Software License, Version 2.0.0
 *
 * Copyright 2003-2004 by NanJing HopeRun(IT-FOREST) Information System Co., Ltd, CHINA and
 *                        IT Forest Corporation
 * All rights reserved.
 *
 * This software is the confidential and proprietary information of
 * HopeRun(IT-FOREST) Information System Co., Ltd, CHINA and IT Forest Corporation.
 * You shall not disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into with
 * HopeRun(IT-FOREST) Information System Co., Ltd, CHINA and IT Forest Corporation.
 */
package com.webpump.ui.bind.editors;

import org.eclipse.jface.text.*;

/**
 * Class of the doubleclickstrategy which is used in the XMLEditor
 * 
 * @author zhang_tx
 * @version 2.0.0 2004-2-13
 */
public class XMLDoubleClickStrategy implements ITextDoubleClickStrategy {
	protected ITextViewer fText;

	public void doubleClicked(ITextViewer part) {
		int pos = part.getSelectedRange().x;

		if (pos < 0)
			return;

		fText = part;
	    int start = pos;
		String editorText = part.getDocument().get();
		String type = "";
		if(editorText.substring(pos-5,pos).equals("] -->")||editorText.substring(pos-5,pos).equals("\" -->")){
			int t = 0;
			if(editorText.substring(pos-5,pos).equals("] -->")){
				String tag = "";
				while(!editorText.substring(pos-5-t-1,pos-5-t).equals("[")){
					t++;
				}
				type = editorText.substring(pos-5-t,pos-5);
				while(pos<editorText.length()){
					t= 0;
					while(!editorText.substring(pos+t,pos+t+4).equals("<!--")&&pos+t+4<editorText.length()){
						t++;			
					}
					tag = editorText.substring(pos+t+4,pos+t+4+1);
					if(tag.equals("E")){
						selectRange(start-1,pos+t);
						break;
					}
					pos = pos+t+4;
					int tee = 0;
				}
			}else{
				String tag = "";
				while(!editorText.substring(pos-5-t-1,pos-5-t).equals("\"")){
					t++;
				}
				type = editorText.substring(pos-5-t,pos-5);
				while(pos<editorText.length()){
					t= 0;
					while(!editorText.substring(pos+t,pos+t+4).equals("<!--")&&pos+t+4<editorText.length()){
						t++;			
					}
					tag = editorText.substring(pos+t+4,pos+t+4+1);
					if(tag.equals("/")){
						selectRange(start-1,pos+t);
						break;
					}
					pos = pos+t+4;
					int tee = 0;
				}
			}			
		}else{
			if (!selectComment(pos)) {
				selectWord(pos);
			}
		}


	}
	protected boolean selectComment(int caretPos) {
		IDocument doc = fText.getDocument();
		int startPos, endPos;

		try {
			int pos = caretPos;
			char c = ' ';

			while (pos >= 0) {
				c = doc.getChar(pos);
				if (c == '\\') {
					pos -= 2;
					continue;
				}
				if (c == Character.LINE_SEPARATOR || c == '\"')
					break;
				--pos;
			}

			if (c != '\"')
				return false;

			startPos = pos;

			pos = caretPos;
			int length = doc.getLength();
			c = ' ';

			while (pos < length) {
				c = doc.getChar(pos);
				if (c == Character.LINE_SEPARATOR || c == '\"')
					break;
				++pos;
			}
			if (c != '\"')
				return false;

			endPos = pos;

			int offset = startPos + 1;
			int len = endPos - offset;
			fText.setSelectedRange(offset, len);
			return true;
		} catch (BadLocationException x) {
		}

		return false;
	}
	protected boolean selectWord(int caretPos) {

		IDocument doc = fText.getDocument();
		int startPos, endPos;

		try {

			int pos = caretPos;
			char c;

			while (pos >= 0) {
				c = doc.getChar(pos);
				if (!Character.isJavaIdentifierPart(c))
					break;
				--pos;
			}

			startPos = pos;

			pos = caretPos;
			int length = doc.getLength();

			while (pos < length) {
				c = doc.getChar(pos);
				if (!Character.isJavaIdentifierPart(c))
					break;
				++pos;
			}

			endPos = pos;
			selectRange(startPos, endPos);
			return true;

		} catch (BadLocationException x) {
		}

		return false;
	}
	private void selectRange(int startPos, int stopPos) {
		int offset = startPos + 1;
		int length = stopPos - offset;
		fText.setSelectedRange(offset, length);
	}
}