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annotate show.php @ 145:66b485431cac

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Change how slides are updated.
author Matti Hamalainen <ccr@tnsp.org>
date Wed, 23 Oct 2013 02:01:07 +0300
parents c030c3cf0d80
children 672c7f28fb97
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 <?
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2 //
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3 // FAPWeb Simple Demoparty System
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4 // Party information display system
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5 // (C) Copyright 2012-2013 Tecnic Software productions (TNSP)
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6 //
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7 require "mconfig.inc.php";
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8 require "msite.inc.php";
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9 require "mcommon.inc.php";
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10 require "majax.php";
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12 stSetupCacheControl();
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13
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14 cmPrintPageHeader("PARTY INFORMATION DISPLAY SYSTEM", "", FALSE);
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15 stCommonAJAX("showajax.php", "show.php", TRUE);
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16 ?>
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17
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18 <!-- ========================== -->
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19
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20 <noscript>
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21 <div class="notice">
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22 <h1>Javascript required</h1>
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23 <p>
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24 The compo system page requires Javascript to be enabled for the AJAX functionality.
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25 <br />
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26 <a href="#">Please enable Javascript and reload this page</a>.
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27 </p>
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28 </div>
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29 </noscript>
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30
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31 <div class="showView" id="mainView0"></div>
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32 <div class="showView" id="mainView1"></div>
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34 <!-- ========================== -->
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35
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36 <script type="text/javascript">
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37
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38 var failCount = 0;
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39 var prevView = -1, activeView = 0, lastUpdate = 0;
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40 var errorView = false;
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41
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42
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43 function tickAnim()
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44 {
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45 if (activeView != prevView)
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46 {
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47 document.getElementById("mainView0").style.display = (activeView == 0) ? "block" : "none";
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48 document.getElementById("mainView1").style.display = (activeView == 1) ? "block" : "none";
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49 prevView = activeView;
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50 }
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51 }
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53
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54 function updateView(txt)
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55 {
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56 var view = document.getElementById("mainView"+ activeView);
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57 if (view)
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58 {
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59 view.innerHTML = txt;
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60 }
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61 }
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64 function displayError()
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65 {
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66 // Increase failure count
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67 if (++failCount > 5 && !errorView)
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68 {
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69 errorView = true;
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70 updateView("... error ...");
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71 }
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72 }
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75 //
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76 // Update view when triggered by main tick
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77 //
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78 function viewChanged()
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79 {
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80 var msuccess2 = function(txt)
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81 {
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82 // Successfully fetched new data, initiate view update
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83 updateView(txt);
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84 }
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85
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86 var msuccess1 = function(txt)
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87 {
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88 lastUpdate = txt;
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89 sendPOSTRequest("action=get&type=slide", msuccess2, displayError);
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90 }
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91
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92 sendPOSTRequest("action=get&type=update", msuccess1, displayError);
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93 }
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94
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95
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96 //
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97 // Main tick function, check for updates from server
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98 //
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99 var timeOutSet = false;
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100
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101 function tickMain()
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102 {
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103 timeOutSet = false;
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104
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105 var msuccess = function(txt)
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106 {
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107 failCount = 0;
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108 if (txt == "changed")
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109 {
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110 viewChanged();
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111 if (!timeOutSet)
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112 {
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113 setTimeout("tickMain();", 500);
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114 timeOutSet = true;
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115 }
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116 }
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117 else
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118 {
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119 if (!timeOutSet)
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120 {
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121 setTimeout("tickMain();", 2000);
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122 timeOutSet = true;
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123 }
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124 }
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125 }
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126
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127 var mfail = function(txt)
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128 {
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129 displayError();
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130 if (!timeOutSet)
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131 {
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132 setTimeout("tickMain();", 5000);
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133 timeOutSet = true;
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134 }
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135 }
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136
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137 sendPOSTRequest("action=check&lastUpdate="+lastUpdate, msuccess, mfail);
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138 }
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139
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140 setTimeout("tickMain();", 1000);
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141 setInterval("tickAnim();", 25);
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142 viewChanged();
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144 </script>
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145 <?
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146 cmPrintPageFooter(FALSE);
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147 ?>