/*!
* jQuery UI Droppable 1.10.3
* http://jqueryui.com
*
* Copyright 2013 jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*
* http://api.jqueryui.com/droppable/
*
* Depends:
* jquery.ui.core.js
* jquery.ui.widget.js
* jquery.ui.mouse.js
* jquery.ui.draggable.js
*/
(function( $, undefined ) {
function isOverAxis( x, reference, size ) {
return ( x > reference ) && ( x < ( reference + size ) );
}
$.widget("ui.droppable", {
version: "1.10.3",
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 o = this.options,
accept = o.accept;
this.isover = false;
this.isout = true;
this.accept = $.isFunction(accept) ? accept : function(d) {
return d.is(accept);
};
//Store the droppable's proportions
this.proportions = { width: this.element[0].offsetWidth, height: this.element[0].offsetHeight };
// Add the reference and positions to the manager
$.ui.ddmanager.droppables[o.scope] = $.ui.ddmanager.droppables[o.scope] || [];
$.ui.ddmanager.droppables[o.scope].push(this);
(o.addClasses && this.element.addClass("ui-droppable"));
},
_destroy: function() {
var i = 0,
drop = $.ui.ddmanager.droppables[this.options.scope];
for ( ; i < drop.length; i++ ) {
if ( drop[i] === this ) {
drop.splice(i, 1);
}
}
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);
};
}
$.Widget.prototype._setOption.apply(this, arguments);
},
_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 = $.data(this, "ui-droppable");
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)
) { 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(draggable, droppable, toleranceMode) {
if (!droppable.offset) {
return false;
}
var draggableLeft, draggableTop,
x1 = (draggable.positionAbs || draggable.position.absolute).left, x2 = x1 + draggable.helperProportions.width,
y1 = (draggable.positionAbs || draggable.position.absolute).top, y2 = y1 + draggable.helperProportions.height,
l = droppable.offset.left, r = l + droppable.proportions.width,
t = droppable.offset.top, 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":
draggableLeft = ((draggable.positionAbs || draggable.position.absolute).left + (draggable.clickOffset || draggable.offset.click).left);
draggableTop = ((draggable.positionAbs || draggable.position.absolute).top + (draggable.clickOffset || draggable.offset.click).top);
return isOverAxis( draggableTop, t, droppable.proportions.height ) && isOverAxis( draggableLeft, 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)) {
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),
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 $.data(this, "ui-droppable").options.scope === scope;
});
if (parent.length) {
parentInstance = $.data(parent[0], "ui-droppable");
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 );
}
}
};
})(jQuery);
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