+ Excercise.prototype.draggable_equal = function($draggable1, $draggable2) {
+ return false;
+ };
+
+ Excercise.prototype.draggable_accept = function($draggable, $droppable) {
+ var d, dropped, _i, _len;
+ dropped = $droppable.closest("ul, ol").find(".draggable");
+ for (_i = 0, _len = dropped.length; _i < _len; _i++) {
+ d = dropped[_i];
+ if (this.draggable_equal($draggable, $(d))) return false;
+ }
+ return true;
+ };
+
+ Excercise.prototype.draggable_dropped = function($draggable) {
+ return $draggable.append('<span class="close">x</span>');
+ };
+
+ Excercise.prototype.dragging = function(ismultiple, issortable) {
+ var _this = this;
+ return $(".question", this.element).each(function(i, question) {
+ var draggable_opts, self;
+ draggable_opts = {
+ revert: 'invalid',
+ helper: 'clone'
+ };
+ $(".draggable", question).draggable(draggable_opts);
+ self = _this;
+ return $(".placeholder", question).droppable({
+ accept: function(draggable) {
+ var $draggable, is_accepted;
+ $draggable = $(draggable);
+ is_accepted = true;
+ if (!$draggable.is(".draggable")) is_accepted = false;
+ if (is_accepted) {
+ is_accepted = self.draggable_accept($draggable, $(this));
+ }
+ if (is_accepted) {
+ $(this).addClass('accepting');
+ } else {
+ $(this).removeClass('accepting');
+ }
+ return is_accepted;
+ },
+ drop: function(ev, ui) {
+ var $added, added,
+ _this = this;
+ $(ev.target).removeClass('accepting');
+ added = $(ui.draggable).clone();
+ $added = added;
+ $added.data("original", ui.draggable);
+ if (!ismultiple) {
+ $(ui.draggable).addClass('disabled').draggable('disable');
+ }
+ $(ev.target).after(added);
+ if (!$(ev.target).hasClass('multiple')) $(ev.target).hide();
+ $added.append('<span class="remove">x</span>');
+ return $('.remove', added).click(function(ev) {
+ $added.prev(".placeholder:not(.multiple)").show();
+ if (!ismultiple) {
+ $added.data('original').removeClass('disabled').draggable('enable');
+ }
+ return $(added).remove();
+ });
+ },
+ over: function(ev, ui) {
+ return $(ev.target).addClass('dragover');
+ },
+ out: function(ev, ui) {
+ return $(ev.target).removeClass('dragover');
+ }
+ });
+ });
+ };
+