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- /*
- * jQuery UI Droppable @VERSION
- *
- * Copyright (c) 2008 Paul Bakaus
- * Dual licensed under the MIT (MIT-LICENSE.txt)
- * and GPL (GPL-LICENSE.txt) licenses.
- *
- * http://docs.jquery.com/UI/Droppables
- *
- * Depends:
- * ui.core.js
- * ui.draggable.js
- */
- (function($) {
- $.widget("ui.droppable", {
-
- _setData: function(key, value) {
- if(key == 'accept') {
- this.options.accept = value && $.isFunction(value) ? value : function(d) {
- return d.is(accept);
- };
- } else {
- $.widget.prototype._setData.apply(this, arguments);
- }
- },
-
- _init: function() {
-
- var o = this.options, accept = o.accept;
- this.isover = 0; this.isout = 1;
- this.options.accept = this.options.accept && $.isFunction(this.options.accept) ? this.options.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[this.options.scope] = $.ui.ddmanager.droppables[this.options.scope] || [];
- $.ui.ddmanager.droppables[this.options.scope].push(this);
-
- (this.options.cssNamespace && this.element.addClass(this.options.cssNamespace+"-droppable"));
-
- },
- plugins: {},
- ui: function(c) {
- return {
- draggable: (c.currentItem || c.element),
- helper: c.helper,
- position: c.position,
- absolutePosition: c.positionAbs,
- options: this.options,
- element: this.element
- };
- },
- 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-disabled")
- .removeData("droppable")
- .unbind(".droppable");
- },
- _over: function(e) {
-
- 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.options.accept.call(this.element,(draggable.currentItem || draggable.element))) {
- $.ui.plugin.call(this, 'over', [e, this.ui(draggable)]);
- this.element.triggerHandler("dropover", [e, this.ui(draggable)], this.options.over);
- }
-
- },
- _out: function(e) {
-
- 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.options.accept.call(this.element,(draggable.currentItem || draggable.element))) {
- $.ui.plugin.call(this, 'out', [e, this.ui(draggable)]);
- this.element.triggerHandler("dropout", [e, this.ui(draggable)], this.options.out);
- }
-
- },
- _drop: function(e,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
-
- var childrenIntersection = false;
- this.element.find(":data(droppable)").not(".ui-draggable-dragging").each(function() {
- var inst = $.data(this, 'droppable');
- if(inst.options.greedy && $.ui.intersect(draggable, $.extend(inst, { offset: inst.element.offset() }), inst.options.tolerance)) {
- childrenIntersection = true; return false;
- }
- });
- if(childrenIntersection) return false;
-
- if(this.options.accept.call(this.element,(draggable.currentItem || draggable.element))) {
- $.ui.plugin.call(this, 'drop', [e, this.ui(draggable)]);
- this.element.triggerHandler("drop", [e, this.ui(draggable)], this.options.drop);
- return this.element;
- }
-
- return false;
-
- },
- _activate: function(e) {
-
- var draggable = $.ui.ddmanager.current;
- $.ui.plugin.call(this, 'activate', [e, this.ui(draggable)]);
- if(draggable) this.element.triggerHandler("dropactivate", [e, this.ui(draggable)], this.options.activate);
-
- },
- _deactivate: function(e) {
-
- var draggable = $.ui.ddmanager.current;
- $.ui.plugin.call(this, 'deactivate', [e, this.ui(draggable)]);
- if(draggable) this.element.triggerHandler("dropdeactivate", [e, this.ui(draggable)], this.options.deactivate);
-
- }
- });
- $.extend($.ui.droppable, {
- defaults: {
- disabled: false,
- tolerance: 'intersect',
- scope: 'default',
- cssNamespace: 'ui'
- }
- });
- $.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':
- return (l < ((draggable.positionAbs || draggable.position.absolute).left + (draggable.clickOffset || draggable.offset.click).left) && ((draggable.positionAbs || draggable.position.absolute).left + (draggable.clickOffset || draggable.offset.click).left) < r
- && t < ((draggable.positionAbs || draggable.position.absolute).top + (draggable.clickOffset || draggable.offset.click).top) && ((draggable.positionAbs || draggable.position.absolute).top + (draggable.clickOffset || draggable.offset.click).top) < b);
- 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, e) {
-
- var m = $.ui.ddmanager.droppables[t.options.scope];
- var type = e ? e.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].options.accept.call(m[i].element,(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 == "dragstart" || type == "sortactivate") m[i]._activate.call(m[i], e); //Activate the droppable if used directly from draggables
-
- }
-
- },
- drop: function(draggable, e) {
-
- 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 = this._drop.call(this, e);
-
- if (!this.options.disabled && this.visible && this.options.accept.call(this.element,(draggable.currentItem || draggable.element))) {
- this.isout = 1; this.isover = 0;
- this._deactivate.call(this, e);
- }
-
- });
- return dropped;
-
- },
- drag: function(draggable, e) {
-
- //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, e);
-
- //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, e);
- }
-
- this[c] = 1; this[c == 'isout' ? 'isover' : 'isout'] = 0;
- this[c == "isover" ? "_over" : "_out"].call(this, e);
-
- // we just moved out of a greedy child
- if (parentInstance && c == 'isout') {
- parentInstance['isout'] = 0;
- parentInstance['isover'] = 1;
- parentInstance._over.call(parentInstance, e);
- }
- });
-
- }
- };
- /*
- * Droppable Extensions
- */
- $.ui.plugin.add("droppable", "activeClass", {
- activate: function(e, ui) {
- $(this).addClass(ui.options.activeClass);
- },
- deactivate: function(e, ui) {
- $(this).removeClass(ui.options.activeClass);
- },
- drop: function(e, ui) {
- $(this).removeClass(ui.options.activeClass);
- }
- });
- $.ui.plugin.add("droppable", "hoverClass", {
- over: function(e, ui) {
- $(this).addClass(ui.options.hoverClass);
- },
- out: function(e, ui) {
- $(this).removeClass(ui.options.hoverClass);
- },
- drop: function(e, ui) {
- $(this).removeClass(ui.options.hoverClass);
- }
- });
- })(jQuery);
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