alpaca
Version:
Alpaca provides the easiest and fastest way to generate interactive forms for the web and mobile devices. It runs simply as HTML5 or more elaborately using Bootstrap, jQuery Mobile or jQuery UI. Alpaca uses Handlebars to process JSON schema and provide
414 lines (340 loc) • 11.7 kB
JavaScript
/*!
* jQuery UI Droppable 1.11.2
* http://jqueryui.com
*
* Copyright 2014 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: "1.11.2",
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;
}));