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annotate ajax.js @ 105:a85f258f6beb

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Move some things around and modularize the code.
author Matti Hamalainen <ccr@tnsp.org>
date Mon, 21 Oct 2013 16:26:42 +0300
parents
children b5981168ed85
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
105
a85f258f6beb Move some things around and modularize the code.
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1 function statusMsg(msg)
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2 {
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3 document.getElementById("nstatus").innerHTML = msg;
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4 }
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5
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6
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7 function strtrim(str)
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8 {
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9 if (!str || str == null)
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10 return "";
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11 return str.replace(/^\s+|\s+$/g,'')
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12 }
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13
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14
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15 function strencode(str)
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16 {
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17 return encodeURIComponent(str);
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18 }
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19
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20
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21 function createXMLRequest()
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22 {
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23 var req;
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24 if (window.XMLHttpRequest)
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25 {
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26 // Modern browsers
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27 req = new XMLHttpRequest();
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28 }
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29 else
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30 {
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31 // Old IE versions
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32 req = new ActiveXObject("Microsoft.XMLHTTP");
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33 }
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34 return req;
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35 }
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36
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37
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38 function sendPOSTRequest(params, success, failure)
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39 {
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40 var req = createXMLRequest();
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41 req.open("POST", "admajax.php", true);
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42 req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
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43 req.setRequestHeader("Content-length", params.length);
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44 req.setRequestHeader("Connection", "close");
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45
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46 req.onreadystatechange = function()
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47 {
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48 if (req.readyState == 4)
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49 {
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50 if (req.status == 404)
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51 {
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52 window.location = "admlogout.php";
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53 }
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54 else
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55 if (req.status == 200)
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56 {
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57 if (success)
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58 {
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59 success(req.responseText);
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60 }
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61 statusMsg(req.statusText);
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62 }
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63 else
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64 {
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65 if (failure)
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66 {
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67 failure(req.status, req.statusText, req.responseText);
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68 }
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69 else
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70 {
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71 statusMsg("["+req.status+" - "+req.statusText+"] "+ req.responseText);
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72 }
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73 }
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74 }
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75 }
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76 req.send(params);
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77 }
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78
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79
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80 function makePostArgs(fields, fprefix, fsuffix)
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81 {
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82 var res = [];
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83 for (var id in fields)
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84 {
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85 var elem = document.getElementById(fprefix + id + fsuffix);
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86 if (!elem)
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87 {
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88 alert("No such DOM element '"+ fprefix + id + fsuffix +"'.");
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89 return "";
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90 }
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91
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92 switch (fields[id])
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93 {
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94 case 0:
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95 case 1:
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96 case 4:
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97 {
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98 var str = strtrim(elem.value);
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99 if ((fields[id] == 1 || fields[id] == 4) && str == "")
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100 {
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101 alert("One or more of the required fields are empty.");
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102 return "";
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103 }
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104 if (fields[id] == 4)
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105 res.push(id+"="+parseInt(elem.value));
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106 else
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107 res.push(id+"="+strencode(str));
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108 }
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109 break;
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110
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111 case 2:
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112 res.push(id+"="+parseInt(elem.value));
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113 break;
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114
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115 case 3:
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116 res.push(id+"="+(elem.checked ? "1" : "0"));
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117 break;
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118
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119 }
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120 }
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121 return res.join("&");
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122 }
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123
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124
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125 function refreshItems(id,name,msgname)
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126 {
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127 var msuccess = function(txt)
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128 {
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129 var nitem = document.getElementById(id);
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130 nitem.innerHTML = txt;
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131 }
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132
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133 sendPOSTRequest("action=get&type="+name, msuccess);
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134 }
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135
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136
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137 function deleteItem(id,prefix,type,func,dsc)
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138 {
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139 var msuccess = function(txt)
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140 {
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141 var item = document.getElementById(prefix+id);
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142 item.style.display = "none";
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143 setTimeout(func, 50);
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144 }
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145
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146 if (confirm("Are you sure you want to delete "+dsc+" #"+id+"?"))
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147 {
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148 sendPOSTRequest("action=delete&type="+type+"&id="+id, msuccess);
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149 }
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150 }
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151
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152