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Filename : position.js
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/* eslint-disable eslint-comments/no-unlimited-disable */
/* eslint-disable */
/*!
 * jQuery UI Position 1.9.2
 * http://jqueryui.com
 *
 * Copyright 2012 jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 *
 * http://api.jqueryui.com/position/
 */
import $ from 'jquery'
// (function( $, undefined ) {

	$.ui = $.ui || {};

	var cachedScrollbarWidth,
		max = Math.max,
		abs = Math.abs,
		round = Math.round,
		rhorizontal = /left|center|right/,
		rvertical = /top|center|bottom/,
		roffset = /[\+\-]\d+%?/,
		rposition = /^\w+/,
		rpercent = /%$/,
		_position = $.fn.position;

	function getOffsets( offsets, width, height ) {
		return [
			parseInt( offsets[ 0 ], 10 ) * ( rpercent.test( offsets[ 0 ] ) ? width / 100 : 1 ),
			parseInt( offsets[ 1 ], 10 ) * ( rpercent.test( offsets[ 1 ] ) ? height / 100 : 1 )
		];
	}
	function parseCss( element, property ) {
		return parseInt( $.css( element, property ), 10 ) || 0;
	}

	$.position = {
		scrollbarWidth: function() {
			if ( cachedScrollbarWidth !== undefined ) {
				return cachedScrollbarWidth;
			}
			var w1, w2,
				div = $( "<div style='display:block;width:50px;height:50px;overflow:hidden;'><div style='height:100px;width:auto;'></div></div>" ),
				innerDiv = div.children()[0];

			$( "body" ).append( div );
			w1 = innerDiv.offsetWidth;
			div.css( "overflow", "scroll" );

			w2 = innerDiv.offsetWidth;

			if ( w1 === w2 ) {
				w2 = div[0].clientWidth;
			}

			div.remove();

			return (cachedScrollbarWidth = w1 - w2);
		},
		getScrollInfo: function( within ) {
			var overflowX = within.isWindow ? "" : within.element.css( "overflow-x" ),
				overflowY = within.isWindow ? "" : within.element.css( "overflow-y" ),
				hasOverflowX = overflowX === "scroll" ||
					( overflowX === "auto" && within.width < within.element[0].scrollWidth ),
				hasOverflowY = overflowY === "scroll" ||
					( overflowY === "auto" && within.height < within.element[0].scrollHeight );
			return {
				width: hasOverflowX ? $.position.scrollbarWidth() : 0,
				height: hasOverflowY ? $.position.scrollbarWidth() : 0
			};
		},
		getWithinInfo: function( element ) {
			var withinElement = $( element || window ),
				isWindow = $.isWindow( withinElement[0] );
			return {
				element: withinElement,
				isWindow: isWindow,
				offset: withinElement.offset() || { left: 0, top: 0 },
				scrollLeft: withinElement.scrollLeft(),
				scrollTop: withinElement.scrollTop(),
				width: isWindow ? withinElement.width() : withinElement.outerWidth(),
				height: isWindow ? withinElement.height() : withinElement.outerHeight()
			};
		}
	};

	$.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 atOffset, targetWidth, targetHeight, targetOffset, basePosition,
			target = $( options.of ),
			within = $.position.getWithinInfo( options.within ),
			scrollInfo = $.position.getScrollInfo( within ),
			targetElem = target[0],
			collision = ( options.collision || "flip" ).split( " " ),
			offsets = {};

		if ( targetElem.nodeType === 9 ) {
			targetWidth = target.width();
			targetHeight = target.height();
			targetOffset = { top: 0, left: 0 };
		} else if ( $.isWindow( targetElem ) ) {
			targetWidth = target.width();
			targetHeight = target.height();
			targetOffset = { top: target.scrollTop(), left: target.scrollLeft() };
		} else if ( targetElem.preventDefault ) {
			// force left top to allow flipping
			options.at = "left top";
			targetWidth = targetHeight = 0;
			targetOffset = { top: targetElem.pageY, left: targetElem.pageX };
		} else {
			targetWidth = target.outerWidth();
			targetHeight = target.outerHeight();
			targetOffset = target.offset();
		}
		// clone to reuse original targetOffset later
		basePosition = $.extend( {}, targetOffset );

		// force my and at to have valid horizontal and vertical positions
		// if a value is missing or invalid, it will be converted to center
		$.each( [ "my", "at" ], function() {
			var pos = ( options[ this ] || "" ).split( " " ),
				horizontalOffset,
				verticalOffset;

			if ( pos.length === 1) {
				pos = rhorizontal.test( pos[ 0 ] ) ?
					pos.concat( [ "center" ] ) :
					rvertical.test( pos[ 0 ] ) ?
						[ "center" ].concat( pos ) :
						[ "center", "center" ];
			}
			pos[ 0 ] = rhorizontal.test( pos[ 0 ] ) ? pos[ 0 ] : "center";
			pos[ 1 ] = rvertical.test( pos[ 1 ] ) ? pos[ 1 ] : "center";

			// calculate offsets
			horizontalOffset = roffset.exec( pos[ 0 ] );
			verticalOffset = roffset.exec( pos[ 1 ] );
			offsets[ this ] = [
				horizontalOffset ? horizontalOffset[ 0 ] : 0,
				verticalOffset ? verticalOffset[ 0 ] : 0
			];

			// reduce to just the positions without the offsets
			options[ this ] = [
				rposition.exec( pos[ 0 ] )[ 0 ],
				rposition.exec( pos[ 1 ] )[ 0 ]
			];
		});

		// normalize collision option
		if ( collision.length === 1 ) {
			collision[ 1 ] = collision[ 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;
		}

		atOffset = getOffsets( offsets.at, targetWidth, targetHeight );
		basePosition.left += atOffset[ 0 ];
		basePosition.top += atOffset[ 1 ];

		return this.each(function() {
			var collisionPosition, using,
				elem = $( this ),
				elemWidth = elem.outerWidth(),
				elemHeight = elem.outerHeight(),
				marginLeft = parseCss( this, "marginLeft" ),
				marginTop = parseCss( this, "marginTop" ),
				collisionWidth = elemWidth + marginLeft + parseCss( this, "marginRight" ) + scrollInfo.width,
				collisionHeight = elemHeight + marginTop + parseCss( this, "marginBottom" ) + scrollInfo.height,
				position = $.extend( {}, basePosition ),
				myOffset = getOffsets( offsets.my, elem.outerWidth(), elem.outerHeight() );

			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;
			}

			position.left += myOffset[ 0 ];
			position.top += myOffset[ 1 ];

			// if the browser doesn't support fractions, then round for consistent results
			if ( !$.support.offsetFractions ) {
				position.left = round( position.left );
				position.top = round( position.top );
			}

			collisionPosition = {
				marginLeft: marginLeft,
				marginTop: 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: [ atOffset[ 0 ] + myOffset[ 0 ], atOffset [ 1 ] + myOffset[ 1 ] ],
						my: options.my,
						at: options.at,
						within: within,
						elem : elem
					});
				}
			});

			if ( $.fn.bgiframe ) {
				elem.bgiframe();
			}

			if ( options.using ) {
				// adds feedback as second argument to using callback, if present
				using = function( props ) {
					var left = targetOffset.left - position.left,
						right = left + targetWidth - elemWidth,
						top = targetOffset.top - position.top,
						bottom = top + targetHeight - elemHeight,
						feedback = {
							target: {
								element: target,
								left: targetOffset.left,
								top: targetOffset.top,
								width: targetWidth,
								height: targetHeight
							},
							element: {
								element: elem,
								left: position.left,
								top: position.top,
								width: elemWidth,
								height: elemHeight
							},
							horizontal: right < 0 ? "left" : left > 0 ? "right" : "center",
							vertical: bottom < 0 ? "top" : top > 0 ? "bottom" : "middle"
						};
					if ( targetWidth < elemWidth && abs( left + right ) < targetWidth ) {
						feedback.horizontal = "center";
					}
					if ( targetHeight < elemHeight && abs( top + bottom ) < targetHeight ) {
						feedback.vertical = "middle";
					}
					if ( max( abs( left ), abs( right ) ) > max( abs( top ), abs( bottom ) ) ) {
						feedback.important = "horizontal";
					} else {
						feedback.important = "vertical";
					}
					options.using.call( this, props, feedback );
				};
			}

			elem.offset( $.extend( position, { using: using } ) );
		});
	};

	$.ui.position = {
		fit: {
			left: function( position, data ) {
				var within = data.within,
					withinOffset = within.isWindow ? within.scrollLeft : within.offset.left,
					outerWidth = within.width,
					collisionPosLeft = position.left - data.collisionPosition.marginLeft,
					overLeft = withinOffset - collisionPosLeft,
					overRight = collisionPosLeft + data.collisionWidth - outerWidth - withinOffset,
					newOverRight;

				// element is wider than within
				if ( data.collisionWidth > outerWidth ) {
					// element is initially over the left side of within
					if ( overLeft > 0 && overRight <= 0 ) {
						newOverRight = position.left + overLeft + data.collisionWidth - outerWidth - withinOffset;
						position.left += overLeft - newOverRight;
						// element is initially over right side of within
					} else if ( overRight > 0 && overLeft <= 0 ) {
						position.left = withinOffset;
						// element is initially over both left and right sides of within
					} else {
						if ( overLeft > overRight ) {
							position.left = withinOffset + outerWidth - data.collisionWidth;
						} else {
							position.left = withinOffset;
						}
					}
					// too far left -> align with left edge
				} else if ( overLeft > 0 ) {
					position.left += overLeft;
					// too far right -> align with right edge
				} else if ( overRight > 0 ) {
					position.left -= overRight;
					// adjust based on position and margin
				} else {
					position.left = max( position.left - collisionPosLeft, position.left );
				}
			},
			top: function( position, data ) {
				var within = data.within,
					withinOffset = within.isWindow ? within.scrollTop : within.offset.top,
					outerHeight = data.within.height,
					collisionPosTop = position.top - data.collisionPosition.marginTop,
					overTop = withinOffset - collisionPosTop,
					overBottom = collisionPosTop + data.collisionHeight - outerHeight - withinOffset,
					newOverBottom;

				// element is taller than within
				if ( data.collisionHeight > outerHeight ) {
					// element is initially over the top of within
					if ( overTop > 0 && overBottom <= 0 ) {
						newOverBottom = position.top + overTop + data.collisionHeight - outerHeight - withinOffset;
						position.top += overTop - newOverBottom;
						// element is initially over bottom of within
					} else if ( overBottom > 0 && overTop <= 0 ) {
						position.top = withinOffset;
						// element is initially over both top and bottom of within
					} else {
						if ( overTop > overBottom ) {
							position.top = withinOffset + outerHeight - data.collisionHeight;
						} else {
							position.top = withinOffset;
						}
					}
					// too far up -> align with top
				} else if ( overTop > 0 ) {
					position.top += overTop;
					// too far down -> align with bottom edge
				} else if ( overBottom > 0 ) {
					position.top -= overBottom;
					// adjust based on position and margin
				} else {
					position.top = max( position.top - collisionPosTop, position.top );
				}
			}
		},
		flip: {
			left: function( position, data ) {
				var within = data.within,
					withinOffset = within.offset.left + within.scrollLeft,
					outerWidth = within.width,
					offsetLeft = within.isWindow ? within.scrollLeft : within.offset.left,
					collisionPosLeft = position.left - data.collisionPosition.marginLeft,
					overLeft = collisionPosLeft - offsetLeft,
					overRight = collisionPosLeft + data.collisionWidth - outerWidth - offsetLeft,
					myOffset = data.my[ 0 ] === "left" ?
						-data.elemWidth :
						data.my[ 0 ] === "right" ?
							data.elemWidth :
							0,
					atOffset = data.at[ 0 ] === "left" ?
						data.targetWidth :
						data.at[ 0 ] === "right" ?
							-data.targetWidth :
							0,
					offset = -2 * data.offset[ 0 ],
					newOverRight,
					newOverLeft;

				if ( overLeft < 0 ) {
					newOverRight = position.left + myOffset + atOffset + offset + data.collisionWidth - outerWidth - withinOffset;
					if ( newOverRight < 0 || newOverRight < abs( overLeft ) ) {
						position.left += myOffset + atOffset + offset;
					}
				}
				else if ( overRight > 0 ) {
					newOverLeft = position.left - data.collisionPosition.marginLeft + myOffset + atOffset + offset - offsetLeft;
					if ( newOverLeft > 0 || abs( newOverLeft ) < overRight ) {
						position.left += myOffset + atOffset + offset;
					}
				}
			},
			top: function( position, data ) {
				var within = data.within,
					withinOffset = within.offset.top + within.scrollTop,
					outerHeight = within.height,
					offsetTop = within.isWindow ? within.scrollTop : within.offset.top,
					collisionPosTop = position.top - data.collisionPosition.marginTop,
					overTop = collisionPosTop - offsetTop,
					overBottom = collisionPosTop + data.collisionHeight - outerHeight - offsetTop,
					top = data.my[ 1 ] === "top",
					myOffset = top ?
						-data.elemHeight :
						data.my[ 1 ] === "bottom" ?
							data.elemHeight :
							0,
					atOffset = data.at[ 1 ] === "top" ?
						data.targetHeight :
						data.at[ 1 ] === "bottom" ?
							-data.targetHeight :
							0,
					offset = -2 * data.offset[ 1 ],
					newOverTop,
					newOverBottom;
				if ( overTop < 0 ) {
					newOverBottom = position.top + myOffset + atOffset + offset + data.collisionHeight - outerHeight - withinOffset;
					if ( ( position.top + myOffset + atOffset + offset) > overTop && ( newOverBottom < 0 || newOverBottom < abs( overTop ) ) ) {
						position.top += myOffset + atOffset + offset;
					}
				}
				else if ( overBottom > 0 ) {
					newOverTop = position.top -  data.collisionPosition.marginTop + myOffset + atOffset + offset - offsetTop;
					if ( ( position.top + myOffset + atOffset + offset) > overBottom && ( newOverTop > 0 || abs( newOverTop ) < overBottom ) ) {
						position.top += myOffset + atOffset + offset;
					}
				}
			}
		},
		flipfit: {
			left: function() {
				$.ui.position.flip.left.apply( this, arguments );
				$.ui.position.fit.left.apply( this, arguments );
			},
			top: function() {
				$.ui.position.flip.top.apply( this, arguments );
				$.ui.position.fit.top.apply( this, arguments );
			}
		}
	};

// fraction support test
	(function () {
		var testElement, testElementParent, testElementStyle, offsetLeft, i,
			body = document.getElementsByTagName( "body" )[ 0 ],
			div = document.createElement( "div" );

		//Create a "fake body" for testing based on method used in jQuery.support
		testElement = document.createElement( body ? "div" : "body" );
		testElementStyle = {
			visibility: "hidden",
			width: 0,
			height: 0,
			border: 0,
			margin: 0,
			background: "none"
		};
		if ( body ) {
			$.extend( testElementStyle, {
				position: "absolute",
				left: "-1000px",
				top: "-1000px"
			});
		}
		for ( i in testElementStyle ) {
			testElement.style[ i ] = testElementStyle[ i ];
		}
		testElement.appendChild( div );
		testElementParent = body || document.documentElement;
		testElementParent.insertBefore( testElement, testElementParent.firstChild );

		div.style.cssText = "position: absolute; left: 10.7432222px;";

		offsetLeft = $( div ).offset().left;
		$.support.offsetFractions = offsetLeft > 10 && offsetLeft < 11;

		testElement.innerHTML = "";
		testElementParent.removeChild( testElement );
	})();

// DEPRECATED
	if ( $.uiBackCompat !== false ) {
		// offset option
		(function( $ ) {
			var _position = $.fn.position;
			$.fn.position = function( options ) {
				if ( !options || !options.offset ) {
					return _position.call( this, options );
				}
				var offset = options.offset.split( " " ),
					at = options.at.split( " " );
				if ( offset.length === 1 ) {
					offset[ 1 ] = offset[ 0 ];
				}
				if ( /^\d/.test( offset[ 0 ] ) ) {
					offset[ 0 ] = "+" + offset[ 0 ];
				}
				if ( /^\d/.test( offset[ 1 ] ) ) {
					offset[ 1 ] = "+" + offset[ 1 ];
				}
				if ( at.length === 1 ) {
					if ( /left|center|right/.test( at[ 0 ] ) ) {
						at[ 1 ] = "center";
					} else {
						at[ 1 ] = at[ 0 ];
						at[ 0 ] = "center";
					}
				}
				return _position.call( this, $.extend( options, {
					at: at[ 0 ] + offset[ 0 ] + " " + at[ 1 ] + offset[ 1 ],
					offset: undefined
				} ) );
			};
		}( jQuery ) );
	}

// }( jQuery ) );