sortable - jQuery nestedSortable如何使第一项 root 和后续项的子项成为

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我有一个表单,你可以生成一个可以排序的菜单结构。 我想让第一项成为父项,而后面的项是子项。 在视觉上实现了这一点,但我还需要确保代码结构正确。

我注意到protectRoot和rootID没有工作,但是我不认为它对代码中的任何东西都有影响。

jsFiddle http://jsfiddle.net/clintongreen/EazX7/

磅英镑


//Nested Sortable Plugin
/*
 * jQuery UI Nested Sortablefdfv
* v 1.3.4/28 apr 2011
* http://mjsarfatti.com/sandbox/nestedSortable
*
* Depends:
* jquery.ui.sortable.js 1.8+
*
* License CC BY-SA 3.0
* Copyright 2010-2011, Manuele J Sarfatti
*/

(function($) {

$.widget("ui.nestedSortable", $.extend({}, $.ui.sortable.prototype, {

 options: {
 tabSize: 20,
 disableNesting: 'ui-nestedSortable-no-nesting',
 errorClass: 'ui-nestedSortable-error',
 listType: 'ol',
 maxLevels: 0,
 noJumpFix: 0
 },

 _create: function(){
 if (this.noJumpFix == false)
 this.element.height(this.element.height());
 this.element.data('sortable', this.element.data('nestedSortable'));
 return $.ui.sortable.prototype._create.apply(this, arguments);
 },



 _mouseDrag: function(event) {

//Compute the helpers position
 this.position = this._generatePosition(event);
 this.positionAbs = this._convertPositionTo("absolute");

 if (!this.lastPositionAbs) {
 this.lastPositionAbs = this.positionAbs;
 }

//Do scrolling
 if(this.options.scroll) {
 var o = this.options, scrolled = false;
 if(this.scrollParent[0]!= document && this.scrollParent[0].tagName!= 'HTML') {

 if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY <o.scrollSensitivity)
 this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed;
 else if(event.pageY - this.overflowOffset.top <o.scrollSensitivity)
 this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed;

 if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX <o.scrollSensitivity)
 this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed;
 else if(event.pageX - this.overflowOffset.left <o.scrollSensitivity)
 this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed;

 } else {

 if(event.pageY - $(document).scrollTop() <o.scrollSensitivity)
 scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
 else if($(window).height() - (event.pageY - $(document).scrollTop()) <o.scrollSensitivity)
 scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);

 if(event.pageX - $(document).scrollLeft() <o.scrollSensitivity)
 scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
 else if($(window).width() - (event.pageX - $(document).scrollLeft()) <o.scrollSensitivity)
 scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);

 }

 if(scrolled!== false && $.ui.ddmanager &&!o.dropBehaviour)
 $.ui.ddmanager.prepareOffsets(this, event);
 }

//Regenerate the absolute position used for position checks
 this.positionAbs = this._convertPositionTo("absolute");

//Set the helper position
 if(!this.options.axis || this.options.axis!="y") this.helper[0].style.left = this.position.left+'px';
 if(!this.options.axis || this.options.axis!="x") this.helper[0].style.top = this.position.top+'px';

//Rearrange
 for (var i = this.items.length - 1; i> = 0; i--) {

//Cache variables and intersection, continue if no intersection
 var item = this.items[i], itemElement = item.item[0], intersection = this._intersectsWithPointer(item);
 if (!intersection) continue;

 if(itemElement!= this.currentItem[0]//cannot intersect with itself
 && this.placeholder[intersection == 1?"next" :"prev"]()[0]!= itemElement//no useless actions that have been done before
 &&!$.contains(this.placeholder[0], itemElement)//no action if the item moved is the parent of the item checked
 && (this.options.type == 'semi-dynamic'?!$.contains(this.element[0], itemElement) : true)
//&& itemElement.parentNode == this.placeholder[0].parentNode//only rearrange items within the same container
 ) {

 this.direction = intersection == 1?"down" :"up";

 if (this.options.tolerance =="pointer" || this._intersectsWithSides(item)) {
 this._rearrange(event, item);
 } else {
 break;
 }

//Clear emtpy ul's/ol's
 this._clearEmpty(itemElement);

 this._trigger("change", event, this._uiHash());
 break;
 }
 }

 var parentItem = (this.placeholder[0].parentNode.parentNode && $(this.placeholder[0].parentNode.parentNode).closest('.ui-sortable').length)? $(this.placeholder[0].parentNode.parentNode) : null;
 var level = this._getLevel(this.placeholder);
 var childLevels = this._getChildLevels(this.helper);
 var previousItem = this.placeholder[0].previousSibling? $(this.placeholder[0].previousSibling) : null;
 if (previousItem!= null) {
 while (previousItem[0].nodeName.toLowerCase()!= 'li' || previousItem[0] == this.currentItem[0]) {
 if (previousItem[0].previousSibling) {
 previousItem = $(previousItem[0].previousSibling);
 } else {
 previousItem = null;
 break;
 }
 }
 }

 newList = document.createElement(o.listType);

 this.beyondMaxLevels = 0;

//If the item is moved to the left, send it to its parent level
 if (parentItem!= null && this.positionAbs.left <parentItem.offset().left) {
 parentItem.after(this.placeholder[0]);
 this._clearEmpty(parentItem[0]);
 this._trigger("change", event, this._uiHash());
 }
//If the item is below another one and is moved to the right, make it a children of it
 else if (previousItem!= null && this.positionAbs.left> previousItem.offset().left + o.tabSize) {
 this._isAllowed(previousItem, level+childLevels+1);
 if (!previousItem.children(o.listType).length) {
 previousItem[0].appendChild(newList);
 }
 previousItem.children(o.listType)[0].appendChild(this.placeholder[0]);
 this._trigger("change", event, this._uiHash());
 }
 else {
 this._isAllowed(parentItem, level+childLevels);
 }

//Post events to containers
 this._contactContainers(event);

//Interconnect with droppables
 if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);

//Call callbacks
 this._trigger('sort', event, this._uiHash());

 this.lastPositionAbs = this.positionAbs;
 return false;

 },

 _mouseStop: function(event, noPropagation) {

//If the item is in a position not allowed, send it back
 if (this.beyondMaxLevels) {
 var parent = this.placeholder.parent().closest(this.options.items);

 for (var i = this.beyondMaxLevels - 1; i> 0; i--) {
 parent = parent.parent().closest(this.options.items);
 }

 this.placeholder.removeClass(this.options.errorClass);
 parent.after(this.placeholder);
 this._trigger("change", event, this._uiHash());
 }

 $.ui.sortable.prototype._mouseStop.apply(this, arguments);

 },

 serialize: function(o) {

 var items = this._getItemsAsjQuery(o && o.connected);
 var str = []; o = o || {};

 $(items).each(function() {
 var res = ($(o.item || this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
 var pid = ($(o.item || this).parent(o.listType).parent('li').attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
 if(res) str.push((o.key || res[1]+'['+(o.key && o.expression? res[1] : res[2])+']')+'='+(pid? (o.key && o.expression? pid[1] : pid[2]) : 'root'));
 });

 if(!str.length && o.key) {
 str.push(o.key + '=');
 }

 return str.join('&');

 },

 toHierarchy: function(o) {

 o = o || {};
 var sDepth = o.startDepthCount || 0;
 var ret = [];

 $(this.element).children('li').each(function() {
 var level = _recursiveItems($(this));
 ret.push(level);
 });

 return ret;

 function _recursiveItems(li) {
 var id = ($(li).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
 if (id!= null) {
 var item = {"id" : id[2]};
 if ($(li).children(o.listType).children('li').length> 0) {
 item.children = [];
 $(li).children(o.listType).children('li').each(function () {
 var level = _recursiveItems($(this));
 item.children.push(level);
 });
 }
 return item;
 }
 }
 },

 toArray: function(o) {

 o = o || {};
 var sDepth = o.startDepthCount || 0;
 var ret = [];
 var left = 2;

 ret.push({"item_id": 'root',"parent_id": 'none',"depth": sDepth,"left": '1',"right": ($('li', this.element).length + 1) * 2});

 $(this.element).children('li').each(function () {
 left = _recursiveArray(this, sDepth + 1, left);
 });

 function _sortByLeft(a,b) {
 return a['left'] - b['left'];
 }
 ret = ret.sort(_sortByLeft);

 return ret;

 function _recursiveArray(item, depth, left) {

 right = left + 1;

 if ($(item).children(o.listType).children('li').length> 0) {
 depth ++;
 $(item).children(o.listType).children('li').each(function () {
 right = _recursiveArray($(this), depth, right);
 });
 depth --;
 }

 id = ($(item).attr(o.attribute || 'id')).match(o.expression || (/(.+)[-=_](.+)/));

 if (depth === sDepth + 1) pid = 'root';
 else {
 parentItem = ($(item).parent(o.listType).parent('li').attr('id')).match(o.expression || (/(.+)[-=_](.+)/));
 pid = parentItem[2];
 }

 if (id!= null) {
 ret.push({"item_id": id[2],"parent_id": pid,"depth": depth,"left": left,"right": right});
 }

 return left = right + 1;
 }

 },

 _clear: function(event, noPropagation) {

 $.ui.sortable.prototype._clear.apply(this, arguments);

//Clean last empty ul/ol
 for (var i = this.items.length - 1; i> = 0; i--) {
 var item = this.items[i].item[0];
 this._clearEmpty(item);
 }
 return true;

 },

 _clearEmpty: function(item) {

 if (item.children[1] && item.children[1].children.length == 0) {
 item.removeChild(item.children[1]);
 }

 },

 _getLevel: function(item) {

 var level = 1;

 if (this.options.listType) {
 var list = item.closest(this.options.listType);
 while (!list.is('.ui-sortable')/* && level <this.options.maxLevels*/) {
 level++;
 list = list.parent().closest(this.options.listType);
 }
 }

 return level;
 },

 _getChildLevels: function(parent, depth) {
 var self = this,
 o = this.options,
 result = 0;
 depth = depth || 0;

 $(parent).children(o.listType).children(o.items).each(function (index, child) {
 result = Math.max(self._getChildLevels(child, depth + 1), result);
 });

 return depth? result + 1 : result;
 },

 _isAllowed: function(parentItem, levels) {
 var o = this.options
//Are we trying to nest under a no-nest or are we nesting too deep?
 if (parentItem == null ||!(parentItem.hasClass(o.disableNesting))) {
 if (o.maxLevels <levels && o.maxLevels!= 0) {
 this.placeholder.addClass(o.errorClass);
 this.beyondMaxLevels = levels - o.maxLevels;
 } else {
 this.placeholder.removeClass(o.errorClass);
 this.beyondMaxLevels = 0;
 }
 } else {
 this.placeholder.addClass(o.errorClass);
 if (o.maxLevels <levels && o.maxLevels!= 0) {
 this.beyondMaxLevels = levels - o.maxLevels;
 } else {
 this.beyondMaxLevels = 1;
 }
 }
 }
}));

$.ui.nestedSortable.prototype.options = $.extend({}, $.ui.sortable.prototype.options, $.ui.nestedSortable.prototype.options);
})(jQuery);

//Create Div
$(".add_menu_item").live('click', function() {
var value = $(this).prev().val();
if (value.length) {
 var newDiv = $('<div id="toggleshow' +"0" + numToggle++ +'" class="div_menu_button"></div>');
 var showDiv = $('<div id="show'+"0" + numShow++ +'" class="menu_button_info">Haywood Tjibloumi</div>');
 $('#created_buttons_list').append(
 newDiv.val(value).text(value) );
 newDiv.wrap("<li></li>");
 newDiv.append(showDiv);
}

});
 var numToggle = 0;
 var numShow = 0;


//Nested Divs Options
 $('ol#created_buttons_list').nestedSortable({
 disableNesting: 'no-nest',
 protectRoot: true,
 rootID: '#theroot',
 forcePlaceholderSize: true,
 handle: 'div',
 helper: 'clone',
 items: 'li:not(.dontsortme)',
 maxLevels: 10,
 opacity:. 6,
 placeholder: 'placeholder',
 revert: 250,
 tabSize: 25,
 tolerance: 'pointer',
 toleranceElement: '> div'
});


//Toggle Hide/SHow
 $('#toggleshow').live('click', function() {$('#show').slideToggle('slow', function() {});});
 $('#toggleshow00').live('click', function() {$('#show00').slideToggle('slow', function() {});});
 $('#toggleshow01').live('click',function() {$('#show01').slideToggle('slow', function() {});});
 $('#toggleshow02').live('click',function() {$('#show02').slideToggle('slow', function() {});});
 $('#toggleshow03').live('click',function() {$('#show03').slideToggle('slow', function() {});});
 $('#toggleshow04').live('click',function() {$('#show04').slideToggle('slow', function() {});});
 $('#toggleshow05').live('click',function() {$('#show05').slideToggle('slow', function() {});});

//Indent first item
$("input.add_menu_item").live('click', function(){
 $("#created_buttons_list li:first").css('margin-left','0px').addClass('dontsortme');
});

CSS


form#create_menu_item{ width:920px; }
form#create_menu_item input#new_menu_name{ padding:5px; float:left; margin:0 10px 10px 0; }
form#create_menu_item input.add_menu_item{font-size:11px; width:60px; height:27px; display:block; -moz-border-radius:3px; -webkit-border-radius:3px; -o-border-radius:3px; border-radius:3px; background:#f5f5f5; background: -moz-linear-gradient(100% 100% 90deg, #eee, #fcfcfc); background: -webkit-linear-gradient(#fcfcfc, #eee)!important; background: -o-linear-gradient(#fcfcfc, #eee);border:1px solid #ccc;color:#666;padding-bottom:3px;float:left;}
div.div_menu_button{font-size:12px;width:295px;height:16px;display:block;-moz-border-radius:3px; -webkit-border-radius:3px; -o-border-radius:3px; border-radius:3px;background:#f5f5f5; background: -moz-linear-gradient(100% 100% 90deg, #eee, #fcfcfc); background: -webkit-linear-gradient(#fcfcfc, #eee)!important; background: -o-linear-gradient(#fcfcfc, #eee);border:1px solid #ccc;color:#666;padding:10px;margin:0 0 10px 0;}
div#created_buttons{ width:680px; border:1px solid #eee; min-height:400px; padding:10px;}
.clear{ clear:both;}
#show, #show00, #show01, #show02, #show03, #show04, #show05 { display:none;}
.ui-nestedSortable-error { background:#fbe3e4; color:#8a1f11;}
ol#created_buttons_list{ margin: 0; padding: 0; padding-left: 30px;}
ol#created_buttons_list, ol#created_buttons_list ol { margin: 0 0 0 25px; padding: 0; list-style-type: none;}
ol#created_buttons_list { margin: 10px 0 10px 0;}
#created_buttons_list li { margin: 7px 0 0 0; padding: 0;}
#created_buttons_list li div { padding: 10px; margin: 0; cursor: move;}
.placeholder { background-color: #f9f9f9; border:1px dashed #ccc;}
#created_buttons li{margin-left: 25px; padding-left: 25px;}

HTML


 <div>
 <form id="create_menu_item">
 <ul class="add_remove_list">
 <li><h4>Add Menu Item</h4></li>
 <li><input id="new_menu_name" type="text" name="new_menu_name" placeholder="Please enter your menu title">
 <input class="add_menu_item" name="add_menu_item" value="Add" type="button">
 </li>
 <li class="clear"><h4>Menu Items</h4></li>
 <li><div id="created_buttons"> <ol id="created_buttons_list"> </ol> </div> 
 </li>
 </ul>
 </form> 
 </div>

时间: 原作者:

自年以来, .live 插件已经在jQuery中被弃用,并且在v1.9中已经。

你应该用 .on() 替换它。

.on 具有用于绑定事件处理程序的2签名,而 .live 只有 1.

如果在绑定时存在该元素,则执行如下操作:


$('.element').on('click', function(){
. . .....
});

你甚至可以使用 shorthand:


$('.element').click(function(){
. . .......
});

如果该元素当时不存在,或者新增了( 这就是 .live 通常用来),则需要使用"事件委托":


$(document).on('click', '.element', function(){
. . ......
});

注意:你想要绑定到最近的static 元素,而不是 document

同时,如果将jQuery升级到最新版本,可以使用 迁移插件 恢复 .live() 功能。

原作者:
...