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Edit File: droppable.js
/*! * jQuery UI Droppable 1.13.3 * https://jqueryui.com * * Copyright OpenJS Foundation and other contributors * Released under the MIT license. * https://jquery.org/license */ //>>label: Droppable //>>group: Interactions //>>description: Enables drop targets for draggable elements. //>>docs: https://api.jqueryui.com/droppable/ //>>demos: https://jqueryui.com/droppable/ ( function( factory ) { "use strict"; if ( typeof define === "function" && define.amd ) { // AMD. Register as an anonymous module. define( [ "jquery", "./draggable", "./mouse", "../version", "../widget" ], factory ); } else { // Browser globals factory( jQuery ); } } )( function( $ ) { "use strict"; $.widget( "ui.droppable", { version: "1.13.3", widgetEventPrefix: "drop", options: { accept: "*", addClasses: true, greedy: false, scope: "default", tolerance: "intersect", // Callbacks activate: null, deactivate: null, drop: null, out: null, over: null }, _create: function() { var proportions, o = this.options, accept = o.accept; this.isover = false; this.isout = true; this.accept = typeof accept === "function" ? accept : function( d ) { return d.is( accept ); }; this.proportions = function( /* valueToWrite */ ) { if ( arguments.length ) { // Store the droppable's proportions proportions = arguments[ 0 ]; } else { // Retrieve or derive the droppable's proportions return proportions ? proportions : proportions = { width: this.element[ 0 ].offsetWidth, height: this.element[ 0 ].offsetHeight }; } }; this._addToManager( o.scope ); if ( o.addClasses ) { this._addClass( "ui-droppable" ); } }, _addToManager: function( scope ) { // Add the reference and positions to the manager $.ui.ddmanager.droppables[ scope ] = $.ui.ddmanager.droppables[ scope ] || []; $.ui.ddmanager.droppables[ scope ].push( this ); }, _splice: function( drop ) { var i = 0; for ( ; i < drop.length; i++ ) { if ( drop[ i ] === this ) { drop.splice( i, 1 ); } } }, _destroy: function() { var drop = $.ui.ddmanager.droppables[ this.options.scope ]; this._splice( drop ); }, _setOption: function( key, value ) { if ( key === "accept" ) { this.accept = typeof value === "function" ? value : function( d ) { return d.is( value ); }; } else if ( key === "scope" ) { var drop = $.ui.ddmanager.droppables[ this.options.scope ]; this._splice( drop ); this._addToManager( value ); } this._super( key, value ); }, _activate: function( event ) { var draggable = $.ui.ddmanager.current; this._addActiveClass(); if ( draggable ) { this._trigger( "activate", event, this.ui( draggable ) ); } }, _deactivate: function( event ) { var draggable = $.ui.ddmanager.current; this._removeActiveClass(); if ( draggable ) { this._trigger( "deactivate", event, this.ui( draggable ) ); } }, _over: function( event ) { var draggable = $.ui.ddmanager.current; // Bail if draggable and droppable are same element if ( !draggable || ( draggable.currentItem || draggable.element )[ 0 ] === this.element[ 0 ] ) { return; } if ( this.accept.call( this.element[ 0 ], ( draggable.currentItem || draggable.element ) ) ) { this._addHoverClass(); this._trigger( "over", event, this.ui( draggable ) ); } }, _out: function( event ) { var draggable = $.ui.ddmanager.current; // Bail if draggable and droppable are same element if ( !draggable || ( draggable.currentItem || draggable.element )[ 0 ] === this.element[ 0 ] ) { return; } if ( this.accept.call( this.element[ 0 ], ( draggable.currentItem || draggable.element ) ) ) { this._removeHoverClass(); this._trigger( "out", event, this.ui( draggable ) ); } }, _drop: function( event, custom ) { var draggable = custom || $.ui.ddmanager.current, childrenIntersection = false; // Bail if draggable and droppable are same element if ( !draggable || ( draggable.currentItem || draggable.element )[ 0 ] === this.element[ 0 ] ) { return false; } this.element .find( ":data(ui-droppable)" ) .not( ".ui-draggable-dragging" ) .each( function() { var inst = $( this ).droppable( "instance" ); if ( inst.options.greedy && !inst.options.disabled && inst.options.scope === draggable.options.scope && inst.accept.call( inst.element[ 0 ], ( draggable.currentItem || draggable.element ) ) && $.ui.intersect( draggable, $.extend( inst, { offset: inst.element.offset() } ), inst.options.tolerance, event ) ) { childrenIntersection = true; return false; } } ); if ( childrenIntersection ) { return false; } if ( this.accept.call( this.element[ 0 ], ( draggable.currentItem || draggable.element ) ) ) { this._removeActiveClass(); this._removeHoverClass(); this._trigger( "drop", event, this.ui( draggable ) ); return this.element; } return false; }, ui: function( c ) { return { draggable: ( c.currentItem || c.element ), helper: c.helper, position: c.position, offset: c.positionAbs }; }, // Extension points just to make backcompat sane and avoid duplicating logic // TODO: Remove in 1.14 along with call to it below _addHoverClass: function() { this._addClass( "ui-droppable-hover" ); }, _removeHoverClass: function() { this._removeClass( "ui-droppable-hover" ); }, _addActiveClass: function() { this._addClass( "ui-droppable-active" ); }, _removeActiveClass: function() { this._removeClass( "ui-droppable-active" ); } } ); $.ui.intersect = ( function() { function isOverAxis( x, reference, size ) { return ( x >= reference ) && ( x < ( reference + size ) ); } return function( draggable, droppable, toleranceMode, event ) { if ( !droppable.offset ) { return false; } var x1 = ( draggable.positionAbs || draggable.position.absolute ).left + draggable.margins.left, y1 = ( draggable.positionAbs || draggable.position.absolute ).top + draggable.margins.top, x2 = x1 + draggable.helperProportions.width, y2 = y1 + draggable.helperProportions.height, l = droppable.offset.left, t = droppable.offset.top, r = l + droppable.proportions().width, b = t + droppable.proportions().height; switch ( toleranceMode ) { case "fit": return ( l <= x1 && x2 <= r && t <= y1 && y2 <= b ); case "intersect": return ( l < x1 + ( draggable.helperProportions.width / 2 ) && // Right Half x2 - ( draggable.helperProportions.width / 2 ) < r && // Left Half t < y1 + ( draggable.helperProportions.height / 2 ) && // Bottom Half y2 - ( draggable.helperProportions.height / 2 ) < b ); // Top Half case "pointer": return isOverAxis( event.pageY, t, droppable.proportions().height ) && isOverAxis( event.pageX, l, droppable.proportions().width ); case "touch": return ( ( y1 >= t && y1 <= b ) || // Top edge touching ( y2 >= t && y2 <= b ) || // Bottom edge touching ( y1 < t && y2 > b ) // Surrounded vertically ) && ( ( x1 >= l && x1 <= r ) || // Left edge touching ( x2 >= l && x2 <= r ) || // Right edge touching ( x1 < l && x2 > r ) // Surrounded horizontally ); default: return false; } }; } )(); /* This manager tracks offsets of draggables and droppables */ $.ui.ddmanager = { current: null, droppables: { "default": [] }, prepareOffsets: function( t, event ) { var i, j, m = $.ui.ddmanager.droppables[ t.options.scope ] || [], type = event ? event.type : null, // workaround for #2317 list = ( t.currentItem || t.element ).find( ":data(ui-droppable)" ).addBack(); droppablesLoop: for ( i = 0; i < m.length; i++ ) { // No disabled and non-accepted if ( m[ i ].options.disabled || ( t && !m[ i ].accept.call( m[ i ].element[ 0 ], ( t.currentItem || t.element ) ) ) ) { continue; } // Filter out elements in the current dragged item for ( j = 0; j < list.length; j++ ) { if ( list[ j ] === m[ i ].element[ 0 ] ) { m[ i ].proportions().height = 0; continue droppablesLoop; } } m[ i ].visible = m[ i ].element.css( "display" ) !== "none"; if ( !m[ i ].visible ) { continue; } // Activate the droppable if used directly from draggables if ( type === "mousedown" ) { m[ i ]._activate.call( m[ i ], event ); } m[ i ].offset = m[ i ].element.offset(); m[ i ].proportions( { width: m[ i ].element[ 0 ].offsetWidth, height: m[ i ].element[ 0 ].offsetHeight } ); } }, drop: function( draggable, event ) { var dropped = false; // Create a copy of the droppables in case the list changes during the drop (#9116) $.each( ( $.ui.ddmanager.droppables[ draggable.options.scope ] || [] ).slice(), function() { if ( !this.options ) { return; } if ( !this.options.disabled && this.visible && $.ui.intersect( draggable, this, this.options.tolerance, event ) ) { dropped = this._drop.call( this, event ) || dropped; } if ( !this.options.disabled && this.visible && this.accept.call( this.element[ 0 ], ( draggable.currentItem || draggable.element ) ) ) { this.isout = true; this.isover = false; this._deactivate.call( this, event ); } } ); return dropped; }, dragStart: function( draggable, event ) { // Listen for scrolling so that if the dragging causes scrolling the position of the // droppables can be recalculated (see #5003) draggable.element.parentsUntil( "body" ).on( "scroll.droppable", function() { if ( !draggable.options.refreshPositions ) { $.ui.ddmanager.prepareOffsets( draggable, event ); } } ); }, drag: function( draggable, event ) { // If you have a highly dynamic page, you might try this option. It renders positions // every time you move the mouse. if ( draggable.options.refreshPositions ) { $.ui.ddmanager.prepareOffsets( draggable, event ); } // Run through all droppables and check their positions based on specific tolerance options $.each( $.ui.ddmanager.droppables[ draggable.options.scope ] || [], function() { if ( this.options.disabled || this.greedyChild || !this.visible ) { return; } var parentInstance, scope, parent, intersects = $.ui.intersect( draggable, this, this.options.tolerance, event ), c = !intersects && this.isover ? "isout" : ( intersects && !this.isover ? "isover" : null ); if ( !c ) { return; } if ( this.options.greedy ) { // find droppable parents with same scope scope = this.options.scope; parent = this.element.parents( ":data(ui-droppable)" ).filter( function() { return $( this ).droppable( "instance" ).options.scope === scope; } ); if ( parent.length ) { parentInstance = $( parent[ 0 ] ).droppable( "instance" ); parentInstance.greedyChild = ( c === "isover" ); } } // We just moved into a greedy child if ( parentInstance && c === "isover" ) { parentInstance.isover = false; parentInstance.isout = true; parentInstance._out.call( parentInstance, event ); } this[ c ] = true; this[ c === "isout" ? "isover" : "isout" ] = false; this[ c === "isover" ? "_over" : "_out" ].call( this, event ); // We just moved out of a greedy child if ( parentInstance && c === "isout" ) { parentInstance.isout = false; parentInstance.isover = true; parentInstance._over.call( parentInstance, event ); } } ); }, dragStop: function( draggable, event ) { draggable.element.parentsUntil( "body" ).off( "scroll.droppable" ); // Call prepareOffsets one final time since IE does not fire return scroll events when // overflow was caused by drag (see #5003) if ( !draggable.options.refreshPositions ) { $.ui.ddmanager.prepareOffsets( draggable, event ); } } }; // DEPRECATED // TODO: switch return back to widget declaration at top of file when this is removed if ( $.uiBackCompat !== false ) { // Backcompat for activeClass and hoverClass options $.widget( "ui.droppable", $.ui.droppable, { options: { hoverClass: false, activeClass: false }, _addActiveClass: function() { this._super(); if ( this.options.activeClass ) { this.element.addClass( this.options.activeClass ); } }, _removeActiveClass: function() { this._super(); if ( this.options.activeClass ) { this.element.removeClass( this.options.activeClass ); } }, _addHoverClass: function() { this._super(); if ( this.options.hoverClass ) { this.element.addClass( this.options.hoverClass ); } }, _removeHoverClass: function() { this._super(); if ( this.options.hoverClass ) { this.element.removeClass( this.options.hoverClass ); } } } ); } return $.ui.droppable; } );