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-/*
- * jQuery UI Droppable
- *
- * 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.base.js
- * ui.draggable.js
- *
- * Revision: $Id: ui.droppable.js 5198 2008-04-04 13:06:40Z paul.bakaus $
- */
-;(function($) {
-
- $.fn.extend({
- droppable: function(options) {
- var args = Array.prototype.slice.call(arguments, 1);
-
- return this.each(function() {
- if (typeof options == "string") {
- var drop = $.data(this, "droppable");
- if(drop) drop[options].apply(drop, args);
-
- } else if(!$.data(this, "droppable"))
- new $.ui.droppable(this, options);
- });
- }
- });
-
- $.ui.droppable = function(element, options) {
-
- //Initialize needed constants
- var instance = this;
- this.element = $(element);
- $.data(element, "droppable", this);
- this.element.addClass("ui-droppable");
-
- //Prepare the passed options
- var o = this.options = options = $.extend({}, $.ui.droppable.defaults, options);
- var accept = o.accept;
- o = $.extend(o, {
- accept: o.accept && o.accept.constructor == Function ? o.accept : function(d) {
- return $(d).is(accept);
- }
- });
-
- $(element).bind("setData.droppable", function(event, key, value){
- o[key] = value;
- }).bind("getData.droppable", function(event, key){
- return o[key];
- }).bind('remove', function() {
- instance.destroy();
- });
-
- //Store the droppable's proportions
- this.proportions = { width: this.element.outerWidth(), height: this.element.outerHeight() };
-
- // Add the reference and positions to the manager
- $.ui.ddmanager.droppables.push({ item: this, over: 0, out: 1 });
-
- };
-
- $.extend($.ui.droppable, {
- defaults: {
- disabled: false,
- tolerance: 'intersect'
- }
- });
-
- $.extend($.ui.droppable.prototype, {
- plugins: {},
- ui: function(c) {
- return {
- instance: this,
- 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;
- for ( var i = 0; i < drop.length; i++ )
- if ( drop[i].item == this )
- drop.splice(i, 1);
-
- this.element
- .removeClass("ui-droppable ui-droppable-disabled")
- .removeData("droppable")
- .unbind(".droppable");
- },
- enable: function() {
- this.element.removeClass("ui-droppable-disabled");
- this.options.disabled = false;
- },
- disable: function() {
- this.element.addClass("ui-droppable-disabled");
- this.options.disabled = true;
- },
- 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; // Bail if draggable and droppable are same element
-
- var childrenIntersection = false;
- this.element.find(".ui-droppable").each(function() {
- var inst = $.data(this, 'droppable');
- if(inst.options.greedy && $.ui.intersect(draggable, { item: inst, offset: inst.element.offset() }, inst.options.tolerance)) {
- childrenIntersection = true; return false;
- }
- });
- if(childrenIntersection) return;
-
- 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);
- }
-
- },
- 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);
-
- }
- });
-
- $.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.item.proportions.width,
- t = droppable.offset.top, b = t + droppable.item.proportions.height;
-
- switch (toleranceMode) {
- case 'fit':
-
- if(!((y2-(draggable.helperProportions.height/2) > t && y1 < t) || (y1 < b && y2 > b) || (x2 > l && x1 < l) || (x1 < r && x2 > r))) return false;
-
- if(y2-(draggable.helperProportions.height/2) > t && y1 < t) return 1; //Crosses top edge
- if(y1 < b && y2 > b) return 2; //Crosses bottom edge
- if(x2 > l && x1 < l) return 1; //Crosses left edge
- if(x1 < r && x2 > r) return 2; //Crosses right edge
-
- //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.left) && ((draggable.positionAbs || draggable.position.absolute).left + draggable.clickOffset.left) < r
- && t < ((draggable.positionAbs || draggable.position.absolute).top + draggable.clickOffset.top) && ((draggable.positionAbs || draggable.position.absolute).top + draggable.clickOffset.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: [],
- prepareOffsets: function(t, e) {
-
- var m = $.ui.ddmanager.droppables;
- var type = e ? e.type : null; // workaround for #2317
- for (var i = 0; i < m.length; i++) {
-
- if(m[i].item.options.disabled || (t && !m[i].item.options.accept.call(m[i].item.element,(t.currentItem || t.element)))) continue;
- m[i].offset = $(m[i].item.element).offset();
- m[i].item.proportions = { width: m[i].item.element.outerWidth(), height: m[i].item.element.outerHeight() };
-
- if(type == "dragstart") m[i].item.activate.call(m[i].item, e); //Activate the droppable if used directly from draggables
- }
-
- },
- drop: function(draggable, e) {
-
- $.each($.ui.ddmanager.droppables, function() {
-
- if (!this.item.options.disabled && $.ui.intersect(draggable, this, this.item.options.tolerance))
- this.item.drop.call(this.item, e);
-
- if (!this.item.options.disabled && this.item.options.accept.call(this.item.element,(draggable.currentItem || draggable.element))) {
- this.out = 1; this.over = 0;
- this.item.deactivate.call(this.item, e);
- }
-
- });
-
- },
- 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, function() {
-
- if(this.item.disabled || this.greedyChild) return;
- var intersects = $.ui.intersect(draggable, this, this.item.options.tolerance);
-
- var c = !intersects && this.over == 1 ? 'out' : (intersects && this.over == 0 ? 'over' : null);
- if(!c) return;
-
- var instance = $.data(this.item.element[0], 'droppable');
- if (instance.options.greedy) {
- this.item.element.parents('.ui-droppable:eq(0)').each(function() {
- var parent = this;
- $.each($.ui.ddmanager.droppables, function() {
- if (this.item.element[0] != parent) return;
- this[c] = 0;
- this[c == 'out' ? 'over' : 'out'] = 1;
- this.greedyChild = (c == 'over' ? 1 : 0);
- this.item[c == 'out' ? 'over' : 'out'].call(this.item, e);
- return false;
- });
- });
- }
-
- this[c] = 1; this[c == 'out' ? 'over' : 'out'] = 0;
- this.item[c].call(this.item, 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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