source: extensions/grum_plugins_classes-2/ajax.js @ 23412

Last change on this file since 23412 was 3395, checked in by grum, 15 years ago

Add plugin Grum Plugins Class-2

  • Property svn:executable set to *
File size: 2.7 KB
Line 
1/* -----------------------------------------------------------------------------
2  file: ajax.js
3  file version: 1.1.0
4  date: 2008-05-25
5  ------------------------------------------------------------------------------
6  author: grum at grum.dnsalias.com
7  << May the Little SpaceFrog be with you >>
8  ------------------------------------------------------------------------------
9
10   this classes provides base functions to add ajax into html page
11
12    + create_httpobject provide a simple function to create an HTML request to a
13      server ; return an XMLHttpRequest object (or compatible object for IE)
14
15    + tHttpObject is a class providing :
16        - an XMLHttpRequest object
17        -
18
19  ------------------------------------------------------------------------------
20  HISTORY VERSION
21  v1.0.1  + [create_httpobject] overrideMimeType unknown by IE 7.0 ;
22  v1.1.0  + add create_httpobject2 with mimetype parameter
23             
24   -------------------------------------------------------------------------- */
25
26
27  function create_httpobject(requesttype, charset, ajaxurl, async)
28  {
29    return(create_httpobject2(requesttype, charset, ajaxurl, async, ''));
30  }
31
32  function create_httpobject2(requesttype, charset, ajaxurl, async, mimetype)
33  {
34    if (window.XMLHttpRequest)
35    {
36      // IE7 & FF method
37      http_request = new XMLHttpRequest();
38    }
39    else
40    {
41      //Other IE method.....
42      if (window.ActiveXObject)
43      {
44        try
45        {
46          http_request = new ActiveXObject("Msxml2.XMLHTTP");
47        }
48        catch (e)
49        {
50          try
51          {
52            http_request = new ActiveXObject("Microsoft.XMLHTTP");
53          }
54          catch (e)
55          {
56            window.alert("Your browser is unable to use XMLHTTPRequest");
57          } // try-catch
58        } // try-catch
59      }
60    } // if-else
61
62    if(charset=='') { charset='utf-8'; }
63
64    http_request.onreadystatechange = function() {  };
65    http_request.open(requesttype.toUpperCase(), ajaxurl, async);
66
67    if(mimetype=='')
68    {
69      mimetype='text/html';
70    }
71
72    try
73    {
74      http_request.overrideMimeType(mimetype+'; charset='+charset);
75    }
76    catch(e)
77    {
78    }
79
80    if(requesttype.toUpperCase()=='POST')
81    {
82      http_request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
83    }
84
85    //method to restitute an XML object ; needed for compatibility between FF&IE
86    http_request.XML = httpobject_responseXML;
87
88    return(http_request);
89  }
90
91
92  function httpobject_responseXML()
93  {
94    if (document.implementation && document.implementation.createDocument)
95    {
96      //ff method
97      return(this.responseXML);
98    }
99    else
100    {
101      //ie method
102      return(xmlCreateFromString(this.responseText));
103    }
104  }
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