1 | (function ($) {
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2 |
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3 | $.extend(true, window, {
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4 | "Slick": {
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5 | "RowSelectionModel": RowSelectionModel
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6 | }
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7 | });
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8 |
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9 | function RowSelectionModel(options) {
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10 | var _grid;
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11 | var _ranges = [];
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12 | var _self = this;
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13 | var _handler = new Slick.EventHandler();
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14 | var _inHandler;
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15 | var _options;
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16 | var _defaults = {
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17 | selectActiveRow: true
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18 | };
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19 |
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20 | function init(grid) {
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21 | _options = $.extend(true, {}, _defaults, options);
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22 | _grid = grid;
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23 | _handler.subscribe(_grid.onActiveCellChanged,
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24 | wrapHandler(handleActiveCellChange));
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25 | _handler.subscribe(_grid.onKeyDown,
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26 | wrapHandler(handleKeyDown));
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27 | _handler.subscribe(_grid.onClick,
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28 | wrapHandler(handleClick));
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29 | }
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30 |
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31 | function destroy() {
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32 | _handler.unsubscribeAll();
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33 | }
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34 |
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35 | function wrapHandler(handler) {
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36 | return function () {
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37 | if (!_inHandler) {
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38 | _inHandler = true;
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39 | handler.apply(this, arguments);
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40 | _inHandler = false;
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41 | }
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42 | };
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43 | }
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44 |
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45 | function rangesToRows(ranges) {
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46 | var rows = [];
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47 | for (var i = 0; i < ranges.length; i++) {
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48 | for (var j = ranges[i].fromRow; j <= ranges[i].toRow; j++) {
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49 | rows.push(j);
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50 | }
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51 | }
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52 | return rows;
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53 | }
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54 |
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55 | function rowsToRanges(rows) {
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56 | var ranges = [];
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57 | var lastCell = _grid.getColumns().length - 1;
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58 | for (var i = 0; i < rows.length; i++) {
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59 | ranges.push(new Slick.Range(rows[i], 0, rows[i], lastCell));
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60 | }
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61 | return ranges;
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62 | }
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63 |
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64 | function getRowsRange(from, to) {
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65 | var i, rows = [];
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66 | for (i = from; i <= to; i++) {
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67 | rows.push(i);
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68 | }
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69 | for (i = to; i < from; i++) {
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70 | rows.push(i);
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71 | }
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72 | return rows;
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73 | }
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74 |
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75 | function getSelectedRows() {
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76 | return rangesToRows(_ranges);
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77 | }
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78 |
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79 | function setSelectedRows(rows) {
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80 | setSelectedRanges(rowsToRanges(rows));
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81 | }
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82 |
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83 | function setSelectedRanges(ranges) {
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84 |
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85 | if ((!_ranges || _ranges.length === 0) && (!ranges || ranges.length === 0)) { return; }
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86 | _ranges = ranges;
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87 | _self.onSelectedRangesChanged.notify(_ranges);
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88 | }
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89 |
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90 | function getSelectedRanges() {
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91 | return _ranges;
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92 | }
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93 |
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94 | function handleActiveCellChange(e, data) {
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95 | if (_options.selectActiveRow && data.row != null) {
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96 | setSelectedRanges([new Slick.Range(data.row, 0, data.row, _grid.getColumns().length - 1)]);
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97 | }
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98 | }
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99 |
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100 | function handleKeyDown(e) {
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101 | var activeRow = _grid.getActiveCell();
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102 | if (_grid.getOptions().multiSelect && activeRow
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103 | && e.shiftKey && !e.ctrlKey && !e.altKey && !e.metaKey
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104 | && (e.which == Slick.keyCode.UP || e.which == Slick.keyCode.DOWN)) {
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105 | var selectedRows = getSelectedRows();
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106 | selectedRows.sort(function (x, y) {
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107 | return x - y;
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108 | });
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109 |
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110 | if (!selectedRows.length) {
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111 | selectedRows = [activeRow.row];
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112 | }
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113 |
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114 | var top = selectedRows[0];
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115 | var bottom = selectedRows[selectedRows.length - 1];
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116 | var active;
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117 |
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118 | if (e.which == Slick.keyCode.DOWN) {
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119 | active = activeRow.row < bottom || top == bottom ? ++bottom : ++top;
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120 | } else {
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121 | active = activeRow.row < bottom ? --bottom : --top;
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122 | }
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123 |
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124 | if (active >= 0 && active < _grid.getDataLength()) {
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125 | _grid.scrollRowIntoView(active);
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126 | var tempRanges = rowsToRanges(getRowsRange(top, bottom));
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127 | setSelectedRanges(tempRanges);
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128 | }
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129 |
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130 | e.preventDefault();
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131 | e.stopPropagation();
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132 | }
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133 | }
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134 |
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135 | function handleClick(e) {
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136 | var cell = _grid.getCellFromEvent(e);
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137 | if (!cell || !_grid.canCellBeActive(cell.row, cell.cell)) {
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138 | return false;
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139 | }
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140 |
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141 | if (!_grid.getOptions().multiSelect || (
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142 | !e.ctrlKey && !e.shiftKey && !e.metaKey)) {
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143 | return false;
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144 | }
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145 |
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146 | var selection = rangesToRows(_ranges);
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147 | var idx = $.inArray(cell.row, selection);
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148 |
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149 | if (idx === -1 && (e.ctrlKey || e.metaKey)) {
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150 | selection.push(cell.row);
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151 | _grid.setActiveCell(cell.row, cell.cell);
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152 | } else if (idx !== -1 && (e.ctrlKey || e.metaKey)) {
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153 | selection = $.grep(selection, function (o, i) {
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154 | return (o !== cell.row);
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155 | });
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156 | _grid.setActiveCell(cell.row, cell.cell);
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157 | } else if (selection.length && e.shiftKey) {
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158 | var last = selection.pop();
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159 | var from = Math.min(cell.row, last);
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160 | var to = Math.max(cell.row, last);
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161 | selection = [];
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162 | for (var i = from; i <= to; i++) {
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163 | if (i !== last) {
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164 | selection.push(i);
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165 | }
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166 | }
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167 | selection.push(last);
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168 | _grid.setActiveCell(cell.row, cell.cell);
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169 | }
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170 |
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171 | var tempRanges = rowsToRanges(selection);
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172 | setSelectedRanges(tempRanges);
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173 | e.stopImmediatePropagation();
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174 |
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175 | return true;
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176 | }
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177 |
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178 | $.extend(this, {
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179 | "getSelectedRows": getSelectedRows,
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180 | "setSelectedRows": setSelectedRows,
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181 |
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182 | "getSelectedRanges": getSelectedRanges,
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183 | "setSelectedRanges": setSelectedRanges,
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184 |
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185 | "init": init,
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186 | "destroy": destroy,
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187 | "pluginName": "RowSelectionModel",
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188 |
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189 | "onSelectedRangesChanged": new Slick.Event()
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190 | });
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191 | }
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192 | })(jQuery); |
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