/*!

* jQuery UI Droppable 1.11.4
* http://jqueryui.com
*
* Copyright jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*
* http://api.jqueryui.com/droppable/
*/

(function( factory ) {

if ( typeof define === "function" && define.amd ) {

        // AMD. Register as an anonymous module.
        define([
                "jquery",
                "./core",
                "./widget",
                "./mouse",
                "./draggable"
        ], factory );
} else {

        // Browser globals
        factory( jQuery );
}

}(function( $ ) {

$.widget( “ui.droppable”, {

version: "1.11.4",
widgetEventPrefix: "drop",
options: {
        accept: "*",
        activeClass: false,
        addClasses: true,
        greedy: false,
        hoverClass: 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 = $.isFunction( accept ) ? 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 );

        o.addClasses && this.element.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 );

        this.element.removeClass( "ui-droppable ui-droppable-disabled" );
},

_setOption: function( key, value ) {

        if ( key === "accept" ) {
                this.accept = $.isFunction( value ) ? 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;
        if ( this.options.activeClass ) {
                this.element.addClass( this.options.activeClass );
        }
        if ( draggable ){
                this._trigger( "activate", event, this.ui( draggable ) );
        }
},

_deactivate: function( event ) {
        var draggable = $.ui.ddmanager.current;
        if ( this.options.activeClass ) {
                this.element.removeClass( this.options.activeClass );
        }
        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 ) ) ) {
                if ( this.options.hoverClass ) {
                        this.element.addClass( this.options.hoverClass );
                }
                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 ) ) ) {
                if ( this.options.hoverClass ) {
                        this.element.removeClass( this.options.hoverClass );
                }
                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 ) ) ) {
                if ( this.options.activeClass ) {
                        this.element.removeClass( this.options.activeClass );
                }
                if ( this.options.hoverClass ) {
                        this.element.removeClass( this.options.hoverClass );
                }
                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
        };
}

});

$.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" ).bind( "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" ).unbind( "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 );
        }
}

};

return $.ui.droppable;

}));