ajaxtags.js

这是AJAX的一个HTML实现！ HTML标签AJAX的实现！

/**
 * Copyright 2007-2008 Jens Kapitza
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
//--------------------------------------------
// just load all files 
// prototype is not loaded for now 
// we only can use normal js functions here
//--------------------------------------------
 
var AjaxJspTag = {
  Version: '1.3',
  require: function(libraryName) {
	    // inserting via DOM fails in Safari 2.0, so brute force approach
	    document.write('<script type="text/javascript" src="'+libraryName+'"><\/script>');
	  },
  load: function() {
		  var elements = document.getElementsByTagName("script");
		  var i=0;
		  var s = null;
		  for (i=0; i < elements.length; i++) {
			  var s = elements[i];
			  if (s.src && s.src.match(/ajaxtags\.js(\?.*)?$/)) {
				  break;
			  }
		  }
		  var path = s.src.replace(/ajaxtags\.js(\?.*)?$/,'');
		  var includes = s.src.match(/\?.*load=([a-z,]*)/);
		  
		  includes = (includes ? includes[1] : 'prototype,scriptaculous/scriptaculous,overlibmws/overlibmws,ajax/ajaxtags_parser,ajax/ajaxtags_tags').split(',');
		  for (i=0; i < includes.length; i++){
			  AjaxJspTag.require(path+includes[i]+'.js'); 
		  }
  }
};

AjaxJspTag.load();



/**
 * Global Variables
 */
AJAX_DEFAULT_PARAMETER = "ajaxParameter";
AJAX_PORTLET_MAX = 1;
AJAX_PORTLET_MIN = 2;
AJAX_PORTLET_CLOSE = 3;
AJAX_CALLOUT_OVERLIB_DEFAULT = "STICKY,CLOSECLICK,DELAY,250,TIMEOUT,5000,VAUTO,WRAPMAX,240,CSSCLASS,FGCLASS,'olfg',BGCLASS,'olbg',CGCLASS,'olcg',CAPTIONFONTCLASS,'olcap',CLOSEFONTCLASS,'olclo',TEXTFONTCLASS,'oltxt'";

/**
 * Utility Functions
 */
// encode , =
function buildParameterString(parameterList) {
	var returnString = '';
	var params = (parameterList || '').split(',');
	var p = 0; // counter
	// XXX use params.each - we use prototype!
	// 
	if (params !== null) {
		for (p = 0; p < params.length; p++) {
			pair = params[p].split('=');
			key = pair[0].strip(); // trim string no spaces allowed in key a, b
									// should work
			val = pair[1];
			// if val is not null and it contains a match for a variable, then
			// proceed
			if (Object.isString(val)) {
				varList = val.match(new RegExp("\\{[\\w\\.\\(\\)\\[\\]]*\\}",
						'g'));
				if (varList !== null) {
					field = $(varList[0].substring(1, varList[0].length - 1));
					switch (field.type) {
					case 'checkbox':
					case 'radio':
					case 'text':
					case 'textarea':
					case 'password':
					case 'hidden':
					case 'select-one':
						returnString += '&' + key + '='
								+ encodeURIComponent(field.value);
						break;
					case 'select-multiple':
						fieldValue = $F(varList[0].substring(1,
								varList[0].length - 1));
						for (i = 0; i < fieldValue.length; i++) {
							returnString += '&' + key + '='
									+ encodeURIComponent(fieldValue[i]);
						}
						break;
					default:
						returnString += '&' + key + '='
								+ encodeURIComponent(field.innerHTML);
						break;
					}
				} else {
					// just add back the pair
					returnString += '&' + key + '=' + encodeURIComponent(val);
				}
			}
		}
	}

	if (returnString.charAt(0) == '&') {
		returnString = returnString.substr(1);
	}
	return returnString;
}

function parseBoolean(value) {
	if (value != null && Object.isString(value)) {
		return ("true" == value.toLowerCase() || "yes" == value.toLowerCase());
	} else {
		if (value) {
			return true;
		}
		return false;
	}
}

// read function parameterstring
function evalJScriptParameters(paramString) {
	if (paramString !== null || !Object.isString(paramString)) {
		return null;
	}
	return eval("[" + paramString + "]");
}

// listener wieder anhaengen fuer TREE tag wird von htmlcontent benutzt
function reloadAjaxListeners() {
	for (i = 0; i < this.ajaxListeners.length; i++) {
		if (Object.isFunction(this.ajaxListeners[i].setListeners)) {
				this.ajaxListeners[i].setListeners();
		}
	}
}
function removeAjaxListener(obj){
	if (this.ajaxListeners) {
		this.ajaxListeners = this.ajaxListeners.without(obj);
	}
}

function addAjaxListener(obj) {
	if (!this.ajaxListeners) {
		this.ajaxListeners = [obj];
	} else {
		this.ajaxListeners.push(obj);
	}
}

/* ---------------------------------------------------------------------- */
/*
 * Example File From "_JavaScript and DHTML Cookbook" Published by O'Reilly &
 * Associates Copyright 2003 Danny Goodman
 */

// http://jslint.com/
// Missing radix parameter -- setDate setHours setMinutes
// utility function to retrieve a future expiration date in proper format;
// pass three integer parameters for the number of days, hours,
// and minutes from now you want the cookie to expire; all three
// parameters required, so use zeros where appropriate
function getExpDate(days, hours, minutes) {
	var expDate = new Date();
	if (typeof days == "number" && typeof hours == "number"
			&& typeof hours == "number") {
		expDate.setDate(expDate.getDate() + parseInt(days));
		expDate.setHours(expDate.getHours() + parseInt(hours));
		expDate.setMinutes(expDate.getMinutes() + parseInt(minutes));
		return expDate.toGMTString();
	}
}

// utility function called by getCookie()
function getCookieVal(offset) {
	var endstr = document.cookie.indexOf(";", offset);
	if (endstr == -1) {
		endstr = document.cookie.length;
	}
	return unescape(document.cookie.substring(offset, endstr));
}

// primary function to retrieve cookie by name
function getCookie(name) {
	var arg = name + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;
	var j;
	while (i < clen) {
		j = i + alen;
		if (document.cookie.substring(i, j) == arg) {
			return getCookieVal(j);
		}
		i = document.cookie.indexOf(" ", i) + 1;
		if (i == 0) {
			break;
		}
	}
	return null;
}

// store cookie value with optional details as needed
function setCookie(name, value, expires, path, domain, secure) {
	document.cookie = name + "=" + escape(value)
			+ ((expires) ? "; expires=" + expires : "")
			+ ((path) ? "; path=" + path : "")
			+ ((domain) ? "; domain=" + domain : "")
			+ ((secure) ? "; secure" : "");
}

// remove the cookie by setting ancient expiration date
function deleteCookie(name, path, domain) {
	if (getCookie(name)) {
		document.cookie = name + "=" + ((path) ? "; path=" + path : "")
				+ ((domain) ? "; domain=" + domain : "")
				+ "; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}
/* ---------------------------------------------------------------------- */
/* End Copyright 2003 Danny Goodman */