Mercurial > hg > fapweb
annotate ajax.js @ 1068:50d005dd22d8
Merged.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Tue, 24 Jan 2017 16:44:30 +0200 |
parents | 82ecea33c477 |
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755 | 1 // |
2 // FAPWeb - Simple Web-based Demoparty Management System | |
3 // Common JavaScript / AJAX code | |
1001 | 4 // (C) Copyright 2012-2015 Tecnic Software productions (TNSP) |
755 | 5 // |
876 | 6 var jsMessageBoxCBCancel = null, jsMessageBoxCBData = null, jsMessageBoxCBOK = null; |
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7 var jsUploadCBS = []; |
876 | 8 |
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9 |
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10 function jsHandleMessageBoxKeys(ev) |
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11 { |
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12 ev = ev || window.event; |
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13 var key = ev.keyCode ? ev.keyCode : ev.which; |
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14 if (key == 27) |
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15 { |
876 | 16 jsCloseMessageBox(jsMessageBoxCBCancel, jsMessageBoxCBData); |
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17 return false; |
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18 } |
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19 else |
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20 return true; |
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21 } |
755 | 22 |
23 | |
876 | 24 function jsSetMessageBoxCBs(cb_ok, cb_cancel, cb_data) |
25 { | |
26 jsMessageBoxCBOK = cb_ok; | |
27 jsMessageBoxCBCancel = cb_cancel; | |
28 jsMessageBoxCBData = cb_data; | |
29 } | |
30 | |
31 | |
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32 function jsCloseMessageBox(callback, cb_data) |
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33 { |
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34 var nitem = document.getElementById("messageBox"); |
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35 if (nitem) |
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36 { |
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37 document.onkeydown = null; |
876 | 38 jsSetMessageBoxCBs(null, null, null); |
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39 |
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40 if (nitem.style.display != "none") |
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41 { |
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42 nitem.style.display = "none"; |
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43 |
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44 if (callback && typeof(callback) === "function") |
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45 callback(cb_data); |
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46 } |
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47 } |
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48 } |
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49 |
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50 |
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51 function jsMessageBox(msg) |
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52 { |
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53 var nitem = document.getElementById("messageBox"); |
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54 if (nitem) |
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55 { |
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56 nitem.innerHTML = "<div class='messageBoxInner'>"+ msg + |
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57 "<div class='messageBoxControls'>"+ |
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58 "<input id='msgBoxConfirmClose' type='button' value=' OK '>"+ |
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59 "</div></div>"; |
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60 |
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61 document.onkeydown = jsHandleMessageBoxKeys; |
876 | 62 jsSetMessageBoxCBs(null, null, null); |
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63 |
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64 var elem = document.getElementById("msgBoxConfirmClose"); |
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65 elem.onclick = function () { jsCloseMessageBox(0, 0); } |
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66 |
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67 nitem.style.display = "block"; |
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68 } |
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69 } |
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70 |
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71 |
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72 function jsErrorMessageBox(msg) |
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73 { |
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74 jsMessageBox("<h1>Error!</h1><div>"+msg+"</div>"); |
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75 } |
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76 |
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77 |
865 | 78 function jsTitleMessageBox(title, msg) |
79 { | |
80 jsMessageBox("<h1>"+title+"</h1><div>"+msg+"</div>"); | |
81 } | |
82 | |
83 | |
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84 function jsConfirmBox(msg, cb_ok, cb_cancel, cb_data) |
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85 { |
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86 var nitem = document.getElementById("messageBox"); |
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87 if (nitem) |
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88 { |
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89 nitem.innerHTML = "<div class='messageBoxInner'><h1>Confirmation</h1><p>"+ msg +"</p>"+ |
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90 "<div class='messageBoxControls'>"+ |
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91 "<input id='msgBoxConfirmCancel' type='button' value=' Cancel '>"+ |
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92 "<input id='msgBoxConfirmOK' type='button' value=' OK '>"+ |
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93 "</div></div>"; |
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94 |
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95 document.onkeydown = jsHandleMessageBoxKeys; |
876 | 96 jsSetMessageBoxCBs(cb_ok, cb_cancel, cb_data); |
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97 |
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98 var elem = document.getElementById("msgBoxConfirmCancel"); |
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99 elem.onclick = function () { jsCloseMessageBox(cb_cancel, cb_data); } |
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100 |
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101 elem = document.getElementById("msgBoxConfirmOK"); |
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102 elem.onclick = function () { jsCloseMessageBox(cb_ok, cb_data); } |
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103 |
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104 nitem.style.display = "block"; |
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105 } |
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106 } |
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107 |
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108 |
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109 function jsStatusMsg(msg) |
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110 { |
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111 var nitem = document.getElementById("nstatus"); |
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112 if (nitem) nstatus.innerHTML = msg; |
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113 } |
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114 |
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115 |
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116 function strtrim(str) |
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117 { |
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118 if (!str || str == null) |
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119 return ""; |
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120 return str.replace(/^\s+|\s+$/g,'') |
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121 } |
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122 |
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123 |
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124 function strencode(str) |
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125 { |
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126 return encodeURIComponent(str); |
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127 } |
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128 |
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129 |
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130 function jsCreateXMLRequest() |
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131 { |
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132 var req; |
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133 if (window.XMLHttpRequest) |
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134 { |
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135 // Modern browsers |
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136 req = new XMLHttpRequest(); |
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137 } |
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138 else |
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139 { |
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140 // Old IE versions |
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141 req = new ActiveXObject("Microsoft.XMLHTTP"); |
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142 } |
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143 return req; |
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144 } |
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145 |
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146 |
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147 // |
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148 // Function for creating AJAX POST request arguments list based |
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149 // on fields and giving them specified types. Also basic check |
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150 // for validity can be performed (e.g. field empty or not) |
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151 // |
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152 var lastPostArgs = Object(); |
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153 function jsMakePostArgs(fields, fprefix, fsuffix, nofail) |
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154 { |
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155 var res = []; |
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156 lastPostArgs = Object(); |
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157 |
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158 for (var id in fields) |
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159 { |
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160 var elname = fprefix + id + fsuffix; |
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161 switch (fields[id]) |
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162 { |
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163 case 4: |
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164 elname += "Sel"; |
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165 break; |
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166 } |
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167 |
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168 var elem = document.getElementById(elname); |
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169 if (!elem && !nofail) |
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170 { |
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171 jsErrorMessageBox("No such DOM element '"+ elname +"'."); |
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172 return ""; |
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173 } |
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174 |
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175 if (elem) |
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176 { |
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177 switch (fields[id]) |
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178 { |
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179 case 1: |
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180 var vstr = strtrim(elem.value); |
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181 res.push(id+"="+strencode(vstr)); |
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182 lastPostArgs[id] = vstr; |
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183 break; |
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184 |
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185 case 2: |
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186 var vint = parseInt(strtrim(elem.value)); |
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187 res.push(id+"="+vint); |
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188 lastPostArgs[id] = vint; |
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189 break; |
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190 |
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191 case 3: |
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192 res.push(id+"="+(elem.checked ? "1" : "0")); |
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193 lastPostArgs[id] = elem.checked; |
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194 break; |
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195 |
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196 case 4: |
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197 var vval = (elem.selectedIndex != -1) ? elem.options[elem.selectedIndex].value : -1; |
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198 res.push(id+"="+vval); |
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199 lastPostArgs[id] = vval; |
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200 break; |
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201 |
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202 default: |
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203 jsErrorMessageBox("Unsupported field type in "+ elname); |
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204 return ""; |
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205 } |
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206 } |
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207 } |
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208 return res.join("&"); |
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209 } |
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210 |
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211 |
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212 function jsGetValue(elname, eltype) |
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213 { |
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214 var elem = document.getElementById(elname); |
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215 if (!elem) |
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216 { |
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217 jsErrorMessageBox("No such DOM element '"+ elname +"'."); |
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218 return ""; |
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219 } |
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220 |
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221 switch (eltype) |
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222 { |
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223 case 1: |
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224 var vstr = strtrim(elem.value); |
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225 return strencode(vstr); |
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226 |
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227 case 2: |
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228 var vint = parseInt(strtrim(elem.value)); |
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229 return vint; |
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230 |
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231 case 3: |
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232 return elem.checked ? "1" : "0"; |
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233 |
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234 case 4: |
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235 if (elem.selectedIndex != -1) |
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236 return elem.options[elem.selectedIndex].value; |
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237 else |
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238 return null; |
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239 |
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240 default: |
857
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241 jsErrorMessageBox("Unsupported field type in "+ elname); |
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242 return ""; |
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243 } |
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244 } |
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245 |
730
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246 |
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247 function jsShowPreviewImage(file) |
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248 { |
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249 var nitem = document.getElementById("messageBox"); |
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250 if (nitem) |
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251 { |
785
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252 nitem.innerHTML = "<div class='imageBoxInner'>"+ |
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253 "<img src='"+file+"' alt='"+file+"' />"+ |
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254 "</div>"; |
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255 |
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256 var elem = document.getElementById("messageBox"); |
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257 elem.onclick = function () { jsCloseMessageBox(0, 0); } |
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258 |
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259 nitem.style.display = "block"; |
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260 |
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261 return false; |
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262 } |
785
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263 |
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264 return true; |
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265 } |
842
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266 |
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267 |
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268 function jsFormatSize(bytes) |
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269 { |
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270 var suffixes = ["Bytes", "KiB", "MiB"]; |
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271 var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024))); |
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272 return (bytes / Math.pow(1024, i)).toFixed(1) +' '+ suffixes[i]; |
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273 } |
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274 |
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275 |
851 | 276 function jsStartFileUpload(formID, formTarget, fileSelID, fileMaxSize, fileCallback) |
842
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277 { |
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278 var formFile = document.getElementById(fileSelID).files[0]; |
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279 if (!formFile || typeof(formFile) !== "object") |
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280 { |
893 | 281 jsErrorMessageBox("No file selected to be uploaded."); |
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282 return; |
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283 } |
842
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284 |
851 | 285 if (formFile.size > fileMaxSize) |
286 { | |
916
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287 jsErrorMessageBox("File size exceeds "+ jsFormatSize(fileMaxSize) +"."); |
851 | 288 return; |
289 } | |
842
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290 |
916
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|
291 var filename = formFile.name; |
851 | 292 var formElem = document.getElementById(formID); |
293 if (!formElem) | |
294 { | |
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295 jsErrorMessageBox("File upload form '"+ formID +"' element not found!"); |
851 | 296 return; |
297 } | |
842
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298 |
851 | 299 var formData = new FormData(formElem); |
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300 var req = jsCreateXMLRequest(); |
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301 req.upload.addEventListener("progress", function(e) |
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302 { |
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303 if (e.lengthComputable) |
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304 { |
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305 var complete = Math.round(e.loaded * 100 / e.total); |
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306 if (complete < 100) |
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307 jsStatusMsg("Uploaded ["+filename+"] "+ complete.toString() +'%, '+ jsFormatSize(e.loaded)); |
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308 else |
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309 jsStatusMsg("Upload ["+filename+"] finished ..."); |
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310 } |
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311 }, false); |
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312 req.addEventListener("error", function(e) |
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313 { |
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314 jsErrorMessageBox("Error occured while uploading "+filename); |
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315 }, false); |
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316 req.addEventListener("abort", function(e) |
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317 { |
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318 jsStatusMsg("Upload of '"+filename+"' aborted."); |
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319 }, false); |
865 | 320 |
321 req.onreadystatechange = function() | |
322 { | |
323 if (req.readyState == 4) | |
324 { | |
325 switch (req.status) | |
326 { | |
327 case 902: | |
328 jsStatusMsg(req.statusText); | |
329 jsMessageBox(req.responseText); | |
330 break; | |
331 | |
332 case 903: | |
333 { | |
334 var nitem = document.getElementById("messageBox"); | |
335 if (nitem) | |
336 { | |
337 nitem.innerHTML = "<div class='messageBoxInner'>"+ req.responseText + | |
338 "<div class='messageBoxControls'>"+ | |
339 "</div></div>"; | |
340 nitem.style.display = "block"; | |
341 } | |
342 } | |
343 break; | |
344 | |
345 case 200: | |
346 if (fileCallback) | |
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347 { |
1067 | 348 var tid = setTimeout(function(qtid) |
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349 { |
1067 | 350 jsRemoveUploadCB(qtid); |
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351 setTimeout(fileCallback, 10); |
955 | 352 //jsTitleMessageBox("File upload", req.responseText); |
1067 | 353 }, 10, qtid); |
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354 jsUploadCBS.push(tid); |
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355 } |
865 | 356 break; |
357 | |
358 default: | |
359 jsStatusMsg("["+req.status+" - "+req.statusText+"] "+ req.responseText); | |
360 break; | |
361 } | |
362 } | |
363 } | |
364 | |
863 | 365 req.open("POST", formTarget); |
851 | 366 req.send(formData); |
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367 } |
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368 |
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369 |
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370 function jsCancelUploadCBS() |
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371 { |
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372 if (jsUploadCBS.length > 0) |
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373 { |
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374 for (var tid in jsUploadCBS) |
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375 clearTimeout(tid); |
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376 } |
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377 } |
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378 |
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379 |
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380 function jsRemoveUploadCB(tid) |
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381 { |
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382 var index = jsUploadCBS.indexOf(tid); |
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383 if (index >= 0) |
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384 jsUploadCBS.splice(index, 1); |
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385 } |