viewing source for "expand-comments.js"
last commit
commit ec9726ece091495bad03d1d5096e468fbba6ca06
Date: Thu Mar 22 13:42:47 2007 +0000
source code
001: /* Expand Comments version 1.3.1
002: * Copyright 2006 Andrew Rader
003: *
004: * This file is part of Expand Comments
005: *
006: * Expand Comments is free software; you can redistribute it and/or modify
007: * it under the terms of the GNU General Public License as published by
008: * the Free Software Foundation; either version 2 of the License, or
009: * (at your option) any later version.
010:
011: * Expand Comments is distributed in the hope that it will be useful,
012: * but WITHOUT ANY WARRANTY; without even the implied warranty of
013: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
014: * GNU General Public License for more details.
015: *
016: * You should have received a copy of the GNU General Public License
017: * along with Expand Comments; if not, write to the Free Software
018: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
019: */
020:
021: // buildAjaxRequest is inspired by www.sitepoint.com/article/take-command-ajax
022: // which is taken from other various tuts. Sharing is caring.
023: // For documentation's sake, callback is a function that takes
024: // a single argument. This argument holds what is returned from
025: // the server, as XML of retXML is true, or as Text if not
026: // buildAjaxRequest will also look to see if there is a third
027: // argument, which should be an array of more arguments.
028: // This array is expanded, and when the callback is called,
029: // It will be given this list of arguments
030:
031: function buildAjaxRequest( callback, retXML, ignoreStatus ) {
032: var http_request = false;
033:
034: if (window.XMLHttpRequest) { // Mozilla, Safari,...
035: http_request = new XMLHttpRequest();
036: if (http_request.overrideMimeType) {
037: http_request.overrideMimeType('text/xml');
038: }
039: }
040: else if (window.ActiveXObject) { // IE
041: try {
042: http_request = new ActiveXObject("Msxml2.XMLHTTP");
043: } catch (e) {
044: try {
045: http_request = new ActiveXObject("Microsoft.XMLHTTP");
046: } catch (e) {}
047: }
048: }
049:
050: if( http_request ) {
051:
052: if( retXML ) {
053: evalString = '(http_request.responseXML';
054: }
055: else {
056: evalString = '(http_request.responseText';
057: }
058:
059: if( arguments.length == 4 ) {
060: args = arguments[3];
061:
062: for( var i = 0; i < args.length; i++ ) {
063: evalString += (',args[' + i + ']');
064: }
065: }
066:
067: evalString += ')';
068:
069: http_request.onreadystatechange = function() {
070: if (http_request.readyState == 4) {
071: if( ignoreStatus || http_request.status == 200 ) {
072: eval(callback + evalString);
073: }
074: }
075: }
076: }
077:
078: return http_request;
079: }
080:
081: /*
082: * makeAjaxRequest will form a GET request from the server.
083: * Any arguments past the first 3 will be sent to the callback
084: */
085: function makeAjaxRequest(callback, retXML, url) {
086: args = [];
087: for( i = 3; i < arguments.length; i++ ) {
088: args.push( arguments[i] );
089: }
090:
091: http_request = buildAjaxRequest(callback, retXML, false, args);
092:
093: /* This RANDOM query is so the page isn't cached */
094: url += "&RANDOM=" + (Math.random() * Date.parse(new Date()))
095: http_request.open('GET', url, true);
096: http_request.send(null);
097: }
098:
099: /*
100: * makeAjaxPost will form a POST request to the server.
101: * params should be a properly formatted line (id=3&submit=true)
102: * Any arguments past the first 4 will be sent to the callback
103: */
104: function makeAjaxPost(callback, retXML, url, params) {
105:
106: args = [];
107: for( i = 4; i < arguments.length; i++ ) {
108: args.push( arguments[i] );
109: }
110:
111: http_request = buildAjaxRequest(callback, retXML, true, args);
112:
113: http_request.open("POST", url, true);
114: http_request.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
115: http_request.send(params);
116:
117: return false;
118: }