Mercurial > hg > digilib-old

annotate webapp/src/main/webapp/jquery/jquery.digilib.marks.js @ 1083:bab0bdac6d92

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first version of annotations plugin. moved mark background image.
author robcast
date Wed, 30 May 2012 21:42:44 +0200
parents b0a18f8af7bf
children
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rev   line source
991
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1 /**
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2 * digilib marks plugin
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3 */
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4
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5 (function($) {
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6
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7 // affine geometry
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8 var geom = null;
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9 // plugin object with digilib data
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10 var digilib = null;
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11
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12 var buttons = {
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13 mark : {
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14 onclick : "setMark",
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15 tooltip : "set a mark",
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16 icon : "mark.png"
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17 },
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18 delmark : {
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19 onclick : "removeMark",
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20 tooltip : "delete the last mark",
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21 icon : "delmark.png"
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22 }
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23 };
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24
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25 var defaults = {
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26 };
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27
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28 var actions = {
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29 /**
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30 * set a mark by clicking (or giving a position)
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31 *
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32 * @param data
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33 * @param mpos
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34 */
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35 setMark : function(data, mpos) {
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36 if (mpos == null) {
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37 // interactive
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38 setMark(data);
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39 } else {
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40 // use position
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41 data.marks.push(mpos);
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42 digilib.fn.redisplay(data);
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43 }
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44 },
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45
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46 /**
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47 * remove the last mark
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48 *
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49 * @param data
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50 */
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51 removeMark : function(data) {
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52 data.marks.pop();
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53 digilib.fn.redisplay(data);
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54 }
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55 };
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56
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57 // plugin installation called by digilib on plugin object.
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58 var install = function(plugin) {
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59 digilib = plugin;
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60 console.debug('installing marks plugin. digilib:', digilib);
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61 // import geometry classes
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62 geom = digilib.fn.geometry;
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63 // add defaults, actins, buttons
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64 $.extend(true, digilib.defaults, defaults);
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65 $.extend(digilib.actions, actions);
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66 $.extend(true, digilib.buttons, buttons);
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67 // export packMarks for regions.js
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68 digilib.fn.packMarks = packMarks;
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69 };
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70
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71 // plugin initialization
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72 var init = function(data) {
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73 console.debug('initialising marks plugin. data:', data);
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74 var $data = $(data);
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75 // install event handler
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76 $data.on('update', handleUpdate);
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77 $data.on('pack', handlePack);
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78 $data.on('unpack', handleUnpack);
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79 };
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80
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81 var handleUpdate = function(evt) {
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82 console.debug("marks: handleUpdate");
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83 var data = this;
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84 if (data.marks != null) {
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85 renderMarks(data);
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86 }
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87 };
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88
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89 /**
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90 * unpack mk parameter into marks array
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91 */
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92 var handleUnpack = function(evt) {
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93 var data = this;
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94 var settings = data.settings;
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95 var marks = [];
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96 var pa;
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97 if (settings.mk) {
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98 var mk = settings.mk;
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99 if (mk.indexOf(";") >= 0) {
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100 pa = mk.split(";"); // old format with ";"
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101 } else {
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102 pa = mk.split(","); // new format
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103 }
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104 for ( var i = 0; i < pa.length; i++) {
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105 var pos = pa[i].split("/");
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106 if (pos.length > 1) {
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107 marks.push(geom.position(pos[0], pos[1]));
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108 }
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109 }
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110 }
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111 data.marks = marks;
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112 };
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113
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114 /**
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115 * pack marks into parameters
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116 */
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117 var handlePack = function(data) {
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118 var data = this;
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119 var settings = data.settings;
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120 var marks = data.marks;
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121 packMarks(settings, marks);
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122 };
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123
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124 /**
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125 * pack marks into parameter
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126 */
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127 var packMarks = function(settings, marks) {
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128 if (!marks)
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129 return;
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130 settings.mk = '';
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131 for ( var i = 0; i < marks.length; i++) {
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132 if (i) {
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133 settings.mk += ',';
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134 }
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135 settings.mk += digilib.fn.cropFloatStr(marks[i].x) + '/' + digilib.fn.cropFloatStr(marks[i].y);
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136 }
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137 };
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138
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139 /**
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140 * place marks on the image
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141 *
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142 */
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143 var renderMarks = function(data) {
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144 if (data.marks == null || data.$img == null || data.imgTrafo == null)
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145 return;
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146 var cssPrefix = data.settings.cssPrefix;
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147 var $elem = data.$elem;
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148 var marks = data.marks;
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149 console.debug("renderMarks: marks="+marks);
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150 // clear marks
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151 $elem.find('div.'+cssPrefix+'mark').remove();
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152 for ( var i = 0; i < marks.length; i++) {
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153 var mark = marks[i];
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154 if (data.zoomArea.containsPosition(mark)) {
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155 var mpos = data.imgTrafo.transform(mark);
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156 console.debug("renderMarks: pos=", mpos);
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157 // create mark
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158 var html = '<div class="'+cssPrefix+'mark '+cssPrefix+'overlay">' + (i + 1) + '</div>';
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159 var $mark = $(html);
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160 $elem.append($mark);
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161 mpos.adjustDiv($mark);
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162 }
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163 }
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164 };
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165
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166 /**
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167 * add a mark where clicked.
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168 *
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169 */
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170 var setMark = function(data) {
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171 var $scaler = data.$scaler;
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172 // unbind other handler TODO: do we need to do this?
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173 $scaler.off(".dlZoomDrag");
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174 // start event capturing
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175 $scaler.one('mousedown.dlSetMark', function(evt) {
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176 // event handler adding a new mark
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177 console.log("setmark at=", evt);
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178 var mpos = geom.position(evt);
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179 var pos = data.imgTrafo.invtransform(mpos);
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180 data.marks.push(pos);
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181 digilib.fn.redisplay(data);
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182 return false;
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183 });
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184 };
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185
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186 // plugin object with name and init
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187 // shared objects filled by digilib on registration
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188 var plugin = {
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189 name : 'marks',
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190 install : install,
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191 init : init,
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192 buttons : {},
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193 actions : {},
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194 fn : {},
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195 plugins : {}
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196 };
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197
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198 if ($.fn.digilib == null) {
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199 $.error("jquery.digilib.marks must be loaded after jquery.digilib!");
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200 } else {
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201 $.fn.digilib('plugin', plugin);
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202 }
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203 })(jQuery);