Team:TU Delft/files/jquery.ui.droppable.js

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Revision as of 10:21, 15 October 2010 by Ptmvanboheemen (Talk | contribs)

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/*

* jQuery UI Droppable 1.8.4
*
* Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
*
* http://docs.jquery.com/UI/Droppables
*
* Depends:
*	jquery.ui.core.js
*	jquery.ui.widget.js
*	jquery.ui.mouse.js
*	jquery.ui.draggable.js
*/

(function( $, undefined ) {

$.widget("ui.droppable", { widgetEventPrefix: "drop", options: { accept: '*', activeClass: false, addClasses: true, greedy: false, hoverClass: false, scope: 'default', tolerance: 'intersect' }, _create: function() {

var o = this.options, accept = o.accept; this.isover = 0; this.isout = 1;

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 drop = $.ui.ddmanager.droppables[this.options.scope]; for ( var i = 0; i < drop.length; i++ ) if ( drop[i] == this ) drop.splice(i, 1);

this.element .removeClass("ui-droppable ui-droppable-disabled") .removeData("droppable") .unbind(".droppable");

return this; },

_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); (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); (draggable && this._trigger('deactivate', event, this.ui(draggable))); },

_over: function(event) {

var draggable = $.ui.ddmanager.current; if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return; // Bail if draggable and droppable are same element

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; if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return; // Bail if draggable and droppable are same element

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; if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return false; // Bail if draggable and droppable are same element

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 }; }

});

$.extend($.ui.droppable, { version: "1.8.4" });

$.ui.intersect = function(draggable, droppable, toleranceMode) {

if (!droppable.offset) return false;

var x1 = (draggable.positionAbs || draggable.position.absolute).left, x2 = x1 + draggable.helperProportions.width, y1 = (draggable.positionAbs || draggable.position.absolute).top, y2 = y1 + draggable.helperProportions.height; var 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); break; 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 break; case 'pointer': var 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), isOver = $.ui.isOver(draggableTop, draggableLeft, t, l, droppable.proportions.height, droppable.proportions.width); return isOver; break; 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 ); break; default: return false; break; }

};

/* This manager tracks offsets of draggables and droppables

/

$.ui.ddmanager = { current: null, droppables: { 'default': [] }, prepareOffsets: function(t, event) {

var m = $.ui.ddmanager.droppables[t.options.scope] || []; var type = event ? event.type : null; // workaround for #2317 var list = (t.currentItem || t.element).find(":data(droppable)").andSelf();

droppablesLoop: for (var i = 0; i < m.length; i++) {

if(m[i].options.disabled || (t && !m[i].accept.call(m[i].element[0],(t.currentItem || t.element)))) continue; //No disabled and non-accepted for (var j=0; j < list.length; j++) { if(list[j] == m[i].element[0]) { m[i].proportions.height = 0; continue droppablesLoop; } }; //Filter out elements in the current dragged item m[i].visible = m[i].element.css("display") != "none"; if(!m[i].visible) continue; //If the element is not visible, continue

m[i].offset = m[i].element.offset(); m[i].proportions = { width: m[i].element[0].offsetWidth, height: m[i].element[0].offsetHeight };

if(type == "mousedown") m[i]._activate.call(m[i], event); //Activate the droppable if used directly from draggables

}

}, drop: function(draggable, event) {

var dropped = false; $.each($.ui.ddmanager.droppables[draggable.options.scope] || [], function() {

if(!this.options) return; if (!this.options.disabled && this.visible && $.ui.intersect(draggable, this, this.options.tolerance)) dropped = dropped || this._drop.call(this, event);

if (!this.options.disabled && this.visible && this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) { this.isout = 1; this.isover = 0; this._deactivate.call(this, event); }

}); return dropped;

}, 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 intersects = $.ui.intersect(draggable, this, this.options.tolerance);

var c = !intersects && this.isover == 1 ? 'isout' : (intersects && this.isover == 0 ? 'isover' : null); if(!c) return;

var parentInstance; if (this.options.greedy) { var parent = this.element.parents(':data(droppable):eq(0)'); if (parent.length) { parentInstance = $.data(parent[0], 'droppable'); parentInstance.greedyChild = (c == 'isover' ? 1 : 0); } }

// we just moved into a greedy child if (parentInstance && c == 'isover') { parentInstance['isover'] = 0; parentInstance['isout'] = 1; parentInstance._out.call(parentInstance, event); }

this[c] = 1; this[c == 'isout' ? 'isover' : 'isout'] = 0; this[c == "isover" ? "_over" : "_out"].call(this, event);

// we just moved out of a greedy child if (parentInstance && c == 'isout') { parentInstance['isout'] = 0; parentInstance['isover'] = 1; parentInstance._over.call(parentInstance, event); } });

} };

})(jQuery);