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annotate war/scripts/jQuery/ui/jquery.ui.position.js @ 75:d69066d16e45 trimmed_data

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author Sebastian Kruse <skruse@mpiwg-berlin.mpg.de>
date Tue, 15 Jan 2013 16:32:25 +0100
parents cf06b77a8bbd
children
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3
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1 /*
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2 * jQuery UI Position 1.8.14
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3 *
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4 * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
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5 * Dual licensed under the MIT or GPL Version 2 licenses.
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6 * http://jquery.org/license
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7 *
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8 * http://docs.jquery.com/UI/Position
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9 */
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10 (function( $, undefined ) {
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11
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12 $.ui = $.ui || {};
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13
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14 var horizontalPositions = /left|center|right/,
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15 verticalPositions = /top|center|bottom/,
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16 center = "center",
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17 _position = $.fn.position,
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18 _offset = $.fn.offset;
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19
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20 $.fn.position = function( options ) {
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21 if ( !options || !options.of ) {
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22 return _position.apply( this, arguments );
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23 }
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24
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25 // make a copy, we don't want to modify arguments
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26 options = $.extend( {}, options );
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27
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28 var target = $( options.of ),
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29 targetElem = target[0],
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30 collision = ( options.collision || "flip" ).split( " " ),
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31 offset = options.offset ? options.offset.split( " " ) : [ 0, 0 ],
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32 targetWidth,
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33 targetHeight,
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34 basePosition;
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35
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36 if ( targetElem.nodeType === 9 ) {
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37 targetWidth = target.width();
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38 targetHeight = target.height();
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39 basePosition = { top: 0, left: 0 };
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40 // TODO: use $.isWindow() in 1.9
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41 } else if ( targetElem.setTimeout ) {
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42 targetWidth = target.width();
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43 targetHeight = target.height();
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44 basePosition = { top: target.scrollTop(), left: target.scrollLeft() };
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45 } else if ( targetElem.preventDefault ) {
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46 // force left top to allow flipping
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47 options.at = "left top";
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48 targetWidth = targetHeight = 0;
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49 basePosition = { top: options.of.pageY, left: options.of.pageX };
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50 } else {
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51 targetWidth = target.outerWidth();
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52 targetHeight = target.outerHeight();
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53 basePosition = target.offset();
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54 }
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55
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56 // force my and at to have valid horizontal and veritcal positions
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57 // if a value is missing or invalid, it will be converted to center
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58 $.each( [ "my", "at" ], function() {
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59 var pos = ( options[this] || "" ).split( " " );
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60 if ( pos.length === 1) {
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61 pos = horizontalPositions.test( pos[0] ) ?
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62 pos.concat( [center] ) :
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63 verticalPositions.test( pos[0] ) ?
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64 [ center ].concat( pos ) :
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65 [ center, center ];
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66 }
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67 pos[ 0 ] = horizontalPositions.test( pos[0] ) ? pos[ 0 ] : center;
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68 pos[ 1 ] = verticalPositions.test( pos[1] ) ? pos[ 1 ] : center;
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69 options[ this ] = pos;
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70 });
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71
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72 // normalize collision option
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73 if ( collision.length === 1 ) {
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74 collision[ 1 ] = collision[ 0 ];
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75 }
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76
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77 // normalize offset option
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78 offset[ 0 ] = parseInt( offset[0], 10 ) || 0;
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79 if ( offset.length === 1 ) {
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80 offset[ 1 ] = offset[ 0 ];
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81 }
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82 offset[ 1 ] = parseInt( offset[1], 10 ) || 0;
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83
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84 if ( options.at[0] === "right" ) {
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85 basePosition.left += targetWidth;
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86 } else if ( options.at[0] === center ) {
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87 basePosition.left += targetWidth / 2;
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88 }
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89
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90 if ( options.at[1] === "bottom" ) {
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91 basePosition.top += targetHeight;
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92 } else if ( options.at[1] === center ) {
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93 basePosition.top += targetHeight / 2;
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94 }
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95
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96 basePosition.left += offset[ 0 ];
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97 basePosition.top += offset[ 1 ];
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98
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99 return this.each(function() {
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100 var elem = $( this ),
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101 elemWidth = elem.outerWidth(),
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102 elemHeight = elem.outerHeight(),
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103 marginLeft = parseInt( $.curCSS( this, "marginLeft", true ) ) || 0,
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104 marginTop = parseInt( $.curCSS( this, "marginTop", true ) ) || 0,
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105 collisionWidth = elemWidth + marginLeft +
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106 ( parseInt( $.curCSS( this, "marginRight", true ) ) || 0 ),
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107 collisionHeight = elemHeight + marginTop +
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108 ( parseInt( $.curCSS( this, "marginBottom", true ) ) || 0 ),
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109 position = $.extend( {}, basePosition ),
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110 collisionPosition;
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111
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112 if ( options.my[0] === "right" ) {
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113 position.left -= elemWidth;
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114 } else if ( options.my[0] === center ) {
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115 position.left -= elemWidth / 2;
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116 }
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117
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118 if ( options.my[1] === "bottom" ) {
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119 position.top -= elemHeight;
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120 } else if ( options.my[1] === center ) {
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121 position.top -= elemHeight / 2;
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122 }
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123
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124 // prevent fractions (see #5280)
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125 position.left = Math.round( position.left );
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126 position.top = Math.round( position.top );
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127
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128 collisionPosition = {
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129 left: position.left - marginLeft,
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130 top: position.top - marginTop
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131 };
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132
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133 $.each( [ "left", "top" ], function( i, dir ) {
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134 if ( $.ui.position[ collision[i] ] ) {
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135 $.ui.position[ collision[i] ][ dir ]( position, {
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136 targetWidth: targetWidth,
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137 targetHeight: targetHeight,
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138 elemWidth: elemWidth,
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139 elemHeight: elemHeight,
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140 collisionPosition: collisionPosition,
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141 collisionWidth: collisionWidth,
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142 collisionHeight: collisionHeight,
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143 offset: offset,
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144 my: options.my,
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145 at: options.at
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146 });
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147 }
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148 });
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149
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150 if ( $.fn.bgiframe ) {
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151 elem.bgiframe();
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152 }
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153 elem.offset( $.extend( position, { using: options.using } ) );
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154 });
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155 };
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156
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157 $.ui.position = {
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158 fit: {
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159 left: function( position, data ) {
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160 var win = $( window ),
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161 over = data.collisionPosition.left + data.collisionWidth - win.width() - win.scrollLeft();
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162 position.left = over > 0 ? position.left - over : Math.max( position.left - data.collisionPosition.left, position.left );
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163 },
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164 top: function( position, data ) {
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165 var win = $( window ),
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166 over = data.collisionPosition.top + data.collisionHeight - win.height() - win.scrollTop();
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167 position.top = over > 0 ? position.top - over : Math.max( position.top - data.collisionPosition.top, position.top );
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168 }
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169 },
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170
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171 flip: {
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172 left: function( position, data ) {
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173 if ( data.at[0] === center ) {
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174 return;
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175 }
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176 var win = $( window ),
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177 over = data.collisionPosition.left + data.collisionWidth - win.width() - win.scrollLeft(),
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178 myOffset = data.my[ 0 ] === "left" ?
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179 -data.elemWidth :
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180 data.my[ 0 ] === "right" ?
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181 data.elemWidth :
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182 0,
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183 atOffset = data.at[ 0 ] === "left" ?
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184 data.targetWidth :
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185 -data.targetWidth,
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186 offset = -2 * data.offset[ 0 ];
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187 position.left += data.collisionPosition.left < 0 ?
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188 myOffset + atOffset + offset :
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189 over > 0 ?
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190 myOffset + atOffset + offset :
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191 0;
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192 },
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193 top: function( position, data ) {
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194 if ( data.at[1] === center ) {
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195 return;
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196 }
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197 var win = $( window ),
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198 over = data.collisionPosition.top + data.collisionHeight - win.height() - win.scrollTop(),
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199 myOffset = data.my[ 1 ] === "top" ?
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200 -data.elemHeight :
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201 data.my[ 1 ] === "bottom" ?
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202 data.elemHeight :
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203 0,
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204 atOffset = data.at[ 1 ] === "top" ?
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205 data.targetHeight :
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206 -data.targetHeight,
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207 offset = -2 * data.offset[ 1 ];
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208 position.top += data.collisionPosition.top < 0 ?
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209 myOffset + atOffset + offset :
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210 over > 0 ?
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211 myOffset + atOffset + offset :
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212 0;
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213 }
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214 }
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215 };
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216
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217 // offset setter from jQuery 1.4
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218 if ( !$.offset.setOffset ) {
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219 $.offset.setOffset = function( elem, options ) {
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220 // set position first, in-case top/left are set even on static elem
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221 if ( /static/.test( $.curCSS( elem, "position" ) ) ) {
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222 elem.style.position = "relative";
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223 }
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224 var curElem = $( elem ),
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225 curOffset = curElem.offset(),
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226 curTop = parseInt( $.curCSS( elem, "top", true ), 10 ) || 0,
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227 curLeft = parseInt( $.curCSS( elem, "left", true ), 10) || 0,
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228 props = {
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229 top: (options.top - curOffset.top) + curTop,
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230 left: (options.left - curOffset.left) + curLeft
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231 };
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232
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233 if ( 'using' in options ) {
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234 options.using.call( elem, props );
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235 } else {
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236 curElem.css( props );
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237 }
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238 };
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239
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240 $.fn.offset = function( options ) {
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241 var elem = this[ 0 ];
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242 if ( !elem || !elem.ownerDocument ) { return null; }
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243 if ( options ) {
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244 return this.each(function() {
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245 $.offset.setOffset( this, options );
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246 });
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247 }
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248 return _offset.call( this );
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249 };
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250 }
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251
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252 }( jQuery ));