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| /* |
| * jQuery UI Position 1.8.5 |
| * |
| * Copyright 2010, AUTHORS.txt (http://jqueryui.com/about) |
| * Dual licensed under the MIT or GPL Version 2 licenses. |
| * http://jquery.org/license |
| * |
| * http://docs.jquery.com/UI/Position |
| */ |
| (function( $, undefined ) { |
| |
| $.ui = $.ui || {}; |
| |
| var horizontalPositions = /left|center|right/, |
| verticalPositions = /top|center|bottom/, |
| center = "center", |
| _position = $.fn.position, |
| _offset = $.fn.offset; |
| |
| $.fn.position = function( options ) { |
| if ( !options || !options.of ) { |
| return _position.apply( this, arguments ); |
| } |
| |
| // make a copy, we don't want to modify arguments |
| options = $.extend( {}, options ); |
| |
| var target = $( options.of ), |
| targetElem = target[0], |
| collision = ( options.collision || "flip" ).split( " " ), |
| offset = options.offset ? options.offset.split( " " ) : [ 0, 0 ], |
| targetWidth, |
| targetHeight, |
| basePosition; |
| |
| if ( targetElem.nodeType === 9 ) { |
| targetWidth = target.width(); |
| targetHeight = target.height(); |
| basePosition = { top: 0, left: 0 }; |
| } else if ( targetElem.scrollTo && targetElem.document ) { |
| targetWidth = target.width(); |
| targetHeight = target.height(); |
| basePosition = { top: target.scrollTop(), left: target.scrollLeft() }; |
| } else if ( targetElem.preventDefault ) { |
| // force left top to allow flipping |
| options.at = "left top"; |
| targetWidth = targetHeight = 0; |
| basePosition = { top: options.of.pageY, left: options.of.pageX }; |
| } else { |
| targetWidth = target.outerWidth(); |
| targetHeight = target.outerHeight(); |
| basePosition = target.offset(); |
| } |
| |
| // force my and at to have valid horizontal and veritcal positions |
| // if a value is missing or invalid, it will be converted to center |
| $.each( [ "my", "at" ], function() { |
| var pos = ( options[this] || "" ).split( " " ); |
| if ( pos.length === 1) { |
| pos = horizontalPositions.test( pos[0] ) ? |
| pos.concat( [center] ) : |
| verticalPositions.test( pos[0] ) ? |
| [ center ].concat( pos ) : |
| [ center, center ]; |
| } |
| pos[ 0 ] = horizontalPositions.test( pos[0] ) ? pos[ 0 ] : center; |
| pos[ 1 ] = verticalPositions.test( pos[1] ) ? pos[ 1 ] : center; |
| options[ this ] = pos; |
| }); |
| |
| // normalize collision option |
| if ( collision.length === 1 ) { |
| collision[ 1 ] = collision[ 0 ]; |
| } |
| |
| // normalize offset option |
| offset[ 0 ] = parseInt( offset[0], 10 ) || 0; |
| if ( offset.length === 1 ) { |
| offset[ 1 ] = offset[ 0 ]; |
| } |
| offset[ 1 ] = parseInt( offset[1], 10 ) || 0; |
| |
| if ( options.at[0] === "right" ) { |
| basePosition.left += targetWidth; |
| } else if (options.at[0] === center ) { |
| basePosition.left += targetWidth / 2; |
| } |
| |
| if ( options.at[1] === "bottom" ) { |
| basePosition.top += targetHeight; |
| } else if ( options.at[1] === center ) { |
| basePosition.top += targetHeight / 2; |
| } |
| |
| basePosition.left += offset[ 0 ]; |
| basePosition.top += offset[ 1 ]; |
| |
| return this.each(function() { |
| var elem = $( this ), |
| elemWidth = elem.outerWidth(), |
| elemHeight = elem.outerHeight(), |
| marginLeft = parseInt( $.curCSS( this, "marginLeft", true ) ) || 0, |
| marginTop = parseInt( $.curCSS( this, "marginTop", true ) ) || 0, |
| collisionWidth = elemWidth + marginLeft + |
| parseInt( $.curCSS( this, "marginRight", true ) ) || 0, |
| collisionHeight = elemHeight + marginTop + |
| parseInt( $.curCSS( this, "marginBottom", true ) ) || 0, |
| position = $.extend( {}, basePosition ), |
| collisionPosition; |
| |
| if ( options.my[0] === "right" ) { |
| position.left -= elemWidth; |
| } else if ( options.my[0] === center ) { |
| position.left -= elemWidth / 2; |
| } |
| |
| if ( options.my[1] === "bottom" ) { |
| position.top -= elemHeight; |
| } else if ( options.my[1] === center ) { |
| position.top -= elemHeight / 2; |
| } |
| |
| // prevent fractions (see #5280) |
| position.left = parseInt( position.left ); |
| position.top = parseInt( position.top ); |
| |
| collisionPosition = { |
| left: position.left - marginLeft, |
| top: position.top - marginTop |
| }; |
| |
| $.each( [ "left", "top" ], function( i, dir ) { |
| if ( $.ui.position[ collision[i] ] ) { |
| $.ui.position[ collision[i] ][ dir ]( position, { |
| targetWidth: targetWidth, |
| targetHeight: targetHeight, |
| elemWidth: elemWidth, |
| elemHeight: elemHeight, |
| collisionPosition: collisionPosition, |
| collisionWidth: collisionWidth, |
| collisionHeight: collisionHeight, |
| offset: offset, |
| my: options.my, |
| at: options.at |
| }); |
| } |
| }); |
| |
| if ( $.fn.bgiframe ) { |
| elem.bgiframe(); |
| } |
| elem.offset( $.extend( position, { using: options.using } ) ); |
| }); |
| }; |
| |
| $.ui.position = { |
| fit: { |
| left: function( position, data ) { |
| var win = $( window ), |
| over = data.collisionPosition.left + data.collisionWidth - win.width() - win.scrollLeft(); |
| position.left = over > 0 ? position.left - over : Math.max( position.left - data.collisionPosition.left, position.left ); |
| }, |
| top: function( position, data ) { |
| var win = $( window ), |
| over = data.collisionPosition.top + data.collisionHeight - win.height() - win.scrollTop(); |
| position.top = over > 0 ? position.top - over : Math.max( position.top - data.collisionPosition.top, position.top ); |
| } |
| }, |
| |
| flip: { |
| left: function( position, data ) { |
| if ( data.at[0] === center ) { |
| return; |
| } |
| var win = $( window ), |
| over = data.collisionPosition.left + data.collisionWidth - win.width() - win.scrollLeft(), |
| myOffset = data.my[ 0 ] === "left" ? |
| -data.elemWidth : |
| data.my[ 0 ] === "right" ? |
| data.elemWidth : |
| 0, |
| atOffset = data.at[ 0 ] === "left" ? |
| data.targetWidth : |
| -data.targetWidth, |
| offset = -2 * data.offset[ 0 ]; |
| position.left += data.collisionPosition.left < 0 ? |
| myOffset + atOffset + offset : |
| over > 0 ? |
| myOffset + atOffset + offset : |
| 0; |
| }, |
| top: function( position, data ) { |
| if ( data.at[1] === center ) { |
| return; |
| } |
| var win = $( window ), |
| over = data.collisionPosition.top + data.collisionHeight - win.height() - win.scrollTop(), |
| myOffset = data.my[ 1 ] === "top" ? |
| -data.elemHeight : |
| data.my[ 1 ] === "bottom" ? |
| data.elemHeight : |
| 0, |
| atOffset = data.at[ 1 ] === "top" ? |
| data.targetHeight : |
| -data.targetHeight, |
| offset = -2 * data.offset[ 1 ]; |
| position.top += data.collisionPosition.top < 0 ? |
| myOffset + atOffset + offset : |
| over > 0 ? |
| myOffset + atOffset + offset : |
| 0; |
| } |
| } |
| }; |
| |
| // offset setter from jQuery 1.4 |
| if ( !$.offset.setOffset ) { |
| $.offset.setOffset = function( elem, options ) { |
| // set position first, in-case top/left are set even on static elem |
| if ( /static/.test( $.curCSS( elem, "position" ) ) ) { |
| elem.style.position = "relative"; |
| } |
| var curElem = $( elem ), |
| curOffset = curElem.offset(), |
| curTop = parseInt( $.curCSS( elem, "top", true ), 10 ) || 0, |
| curLeft = parseInt( $.curCSS( elem, "left", true ), 10) || 0, |
| props = { |
| top: (options.top - curOffset.top) + curTop, |
| left: (options.left - curOffset.left) + curLeft |
| }; |
| |
| if ( 'using' in options ) { |
| options.using.call( elem, props ); |
| } else { |
| curElem.css( props ); |
| } |
| }; |
| |
| $.fn.offset = function( options ) { |
| var elem = this[ 0 ]; |
| if ( !elem || !elem.ownerDocument ) { return null; } |
| if ( options ) { |
| return this.each(function() { |
| $.offset.setOffset( this, options ); |
| }); |
| } |
| return _offset.call( this ); |
| }; |
| } |
| |
| }( jQuery )); |