是否可以锁定JQuery可排序列表中的列表项,使这些项目保留在列表中的特定位置。
例如,
考虑这个带有锁定项目的伪列表......
item A
item B(locked)
item C(locked)
item D
item E
item F
item G(locked)
所以,我希望以一种方式修复项目B,C和G,如果用户在列表的开头拖放项目D,则项目A“跳过”固定/锁定项目B和C有以下结果......
item D
item B(locked)
item C(locked)
item A
item E
item F
item G(locked)
我一直在寻找类似的东西而没有运气。有可能..?
答案 0 :(得分:58)
这是一个希望无错误的版本,在您拖动时进行更新。当排序开始时,它会生成项目的当前所需位置,这意味着您应该能够在需要时更改类,刷新小部件的列表项并且您很高兴。
它还使用sortable的内置items
属性来阻止拖动固定项并排除列表顶部和底部的任何排序问题。
我尝试移动固定项目,但这导致了可怕的错误行为,尤其是当组中有多个固定项目时。最终解决方案从列表中分离所有固定项目,在前面添加一个辅助元素,然后将固定元素重新插入到所需位置,这似乎可以修复所有错误。
在此处试用演示:http://jsfiddle.net/PQrqS/1/
HTML:
<ul id="sortable">
<li>oranges</li>
<li class="static">apples</li>
<li>bananas</li>
<li>pineapples</li>
<li>grapes</li>
<li class="static">pears</li>
<li>mango</li>
</ul>
CSS:
.static { color:red; }
li { background-color:whitesmoke; border:1px solid silver; width:100px; padding:2px; margin:2px; }
使用Javascript:
$('#sortable').sortable({
items: ':not(.static)',
start: function(){
$('.static', this).each(function(){
var $this = $(this);
$this.data('pos', $this.index());
});
},
change: function(){
$sortable = $(this);
$statics = $('.static', this).detach();
$helper = $('<li></li>').prependTo(this);
$statics.each(function(){
var $this = $(this);
var target = $this.data('pos');
$this.insertAfter($('li', $sortable).eq(target));
});
$helper.remove();
}
});
答案 1 :(得分:26)
我扩展了jQuery.Ui.sortable
:
fixed
功能的 jQuery.Ui.sortable
小部件扩展程序。此功能允许用户修复列表中的元素
使用.fixedsortable()
构造函数,您可以构建一个.sortable()
类,并使用这些功能进行扩展。您也可以使用原始方法和扩展。
https://gist.github.com/3758329#file_fixedsortable.js&gt; fixedsortable.js
http://jsfiddle.net/omnosis/jQkdb/
一般:
要使用,请将fixed
属性添加到可排序列表optios:
$("#list").fixedsortable({
fixed: (value)
})
值可以是:
3
[1,2,5]
HTML:
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js"></script> //the jquery
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.13/jquery-ui.min.js"></script> //the original jquery-ui
<script type="text/javascript" src="https://raw.github.com/gist/3758329/91749ff63cbc5056264389588a8ab64238484d74/fixedsortable.js"></script> //the extended sortable
...
<ul id="sortable1">
<li>oranges</li>
<li class="static">apples</li>
<li>bananas</li>
<li>pineapples</li>
<li>grapes</li>
<li class="static">pears</li>
<li>mango</li>
</ul>
<ul id="sortable2">
<li>bananas</li>
<li foo="asd">oranges</li>
<li foo="dsa">apples</li>
<li>pineapples</li>
<li>grapes</li>
<li>pears</li>
<li>mango</li>
</ul>
<ul id="sortable3">
<li>bananas</li>
<li>oranges</li>
<li>apples</li>
<li>pineapples</li>
<li>grapes</li>
<li>pears</li>
<li>mango</li>
</ul>
的Javascript
$(function() {
$("#sortable1").fixedsortable({
fixed: "> .static"
});
$("#sortable2").fixedsortable({
fixed: $("li[foo]").css("background","red")
});
$("#sortable3").fixedsortable({
fixed: 2
})
});
注意:
如果您坚持使用.sortable
而不是.fixedsortable
,则可以使用此https://gist.github.com/3758329#file_sortable.js代替jquery.ui库。这是jQuery.ui
的完全替代,但由于以后的更新,我不建议使用它。
我一直在研究这个超过12个小时:(我很疯狂......
答案 2 :(得分:9)
检查出来:Forcing an item to remain in place in a jQuery UI Sortable list
另外,我在这里用多个固定元素实现了上述解决方案:http://jsfiddle.net/enBnH/12/(已废弃,见下文) 我认为这是相当不言自明的。
我已经自动生成了lockto值的过程,并将ID添加到那些类别为“fixed”的li
中(注意我必须添加一个ID,以便我们可以引用它)
在此处查看完整的解决方案:http://jsfiddle.net/enBnH/44/
好吧,在经历了上述的大量错误后,我只是重写了自己的事情: http://jsfiddle.net/thomas4g/GPMZZ/15/
注意:上面的确有效,但@ DarthJDG的回答对我来说似乎更好。我离开了我的人,可能更喜欢我的行为(我学会了不删除东西,因为有更好的版本:P)
答案 3 :(得分:4)
这是基于@DarthJDG代码。然而,它没有检索所有的ID,并且排序不适用于表。所以我设法更新了他的解决方案,该解决方案适用于列表和表,并将id保留在数组中。
使用Javascript:
var fixed = '.static'; //class which will be locked
var items = 'li'; //tags that will be sorted
$('ul').sortable({
cancel: fixed,
items: items,
start: function () {
$(fixed, this).each(function () {
var $this = $(this);
$this.data('pos', $this.index());
});
},
change: function () {
var $sortable = $(this);
var $statics = $(fixed, this).detach();
var tagName = $statics.prop('tagName');
var $helper = $('<'+tagName+'/>').prependTo(this);
$statics.each(function () {
var $this = $(this);
var target = $this.data('pos');
$this.insertAfter($(items, $sortable).eq(target));
});
$helper.remove();
}
});
答案 4 :(得分:3)
使用items参数可以达到您想要的效果:
$("#mytable tbody").sortable({items: 'tr.sortable'});
现在只能对具有.sortable
CSS类的行进行排序。
如果您只想锁定第一行,可以执行以下操作:
$("#mytable tbody").sortable({items: 'tr:not(:first)'});
可能性无穷无尽......
答案 5 :(得分:1)
当我们有多个连接的可排序时,我遇到了问题。 @sarunast和@DarthJDG建议的代码在将项目从一个列表拖动到另一个列表时会出现错误行为。 因此,我稍微修改了一下,现在你可以从不同的列表中拖动项目并在两个列表中保存位置。
的javascript:
let connected = '.soratble';
let fixed = '.static';
let newParentContainer;
//wrap the code suggested by @sarunast and @DarthJDG into the function
//code was modified a little
function sortingAroundFixedPositions(container) {
let sortable = $(container);
let statics = $(fixed, container).detach();
let tagName = statics.prop('tagName');
let helper = $('<' + tagName + '/>').prependTo(container);
statics.each(function() {
let target = this.dataset.pos;
let targetPosition = $(tagName, sortable).eq(target);
if (targetPosition.length === 0) {
targetPosition = $(tagName, sortable).eq(target - 1)
}
$(this).insertAfter(targetPosition);
});
helper.remove();
}
$('ul').sortable({
connectWith: connected,
cancel: fixed,
start: function() {
$(fixed, connected).each(function() {
this.dataset.pos = $(this).index();
});
},
change: function(e, ui) {
sortingAroundFixedPositions(this);
if (ui.sender) {
newParentContainer = this;
}
if (newParentContainer) {
sortingAroundFixedPositions(newParentContainer);
}
},
update: function(e, ui) {
newParentContainer = undefined;
}
});
答案 6 :(得分:1)
只需使用“包含/排除”项目选择器。 这是链接:https://jqueryui.com/sortable/#items
答案 7 :(得分:0)
2016年1月6日访问的代码
//this code is created to fix this problem: http://stackoverflow.com/questions/4299241/
(function( $, undefined ) {
$.widget("ui.fixedsortable", $.ui.sortable, {
options: $.extend({},$.ui.sortable.prototype.options,{fixed:[]}),
_create: function() {
var o = this.options;
this.containerCache = {};
this.element.addClass("ui-sortable");
//Get the items
$.ui.sortable.prototype.refresh.apply(this,arguments);
if( typeof this.options.fixed == "number") {
var num = this.options.fixed
this.options.fixed = [num];
}
else if( typeof this.options.fixed == "string" || typeof this.options.fixed == "object") {
if(this.options.fixed.constructor != Array) {
var selec = this.options.fixed;
var temparr = [];
var temp = $(this.element[0]).find(selec);
var x = this;
temp.each(function() {
var i;
for(i=0;i<x.items.length && x.items[i].item.get(0) != this;++i) {}
if(i<x.items.length) temparr.push(i);
});
this.options.fixed = temparr;
}
}
//Let's determine if the items are being displayed horizontally
this.floating = this.items.length ? o.axis === 'x' || (/left|right/).test(this.items[0].item.css('float')) || (/inline|table-cell/).test(this.items[0].item.css('display')) : false;
//Let's determine the parent's offset
this.offset = this.element.offset();
//Initialize mouse events for interaction
$.ui.sortable.prototype._mouseInit.apply(this,arguments);
},
_mouseCapture: function( event ) {
this._fixPrev = this._returnItems();
return $.ui.sortable.prototype._mouseCapture.apply(this,arguments);
},
_mouseStart: function( event ) {
for(var i=0;i<this.options.fixed.length;++i) {
var num = this.options.fixed[i];
var elem = this.items[num];
if(event.target == elem.item.get(0)) return false;
}
return $.ui.sortable.prototype._mouseStart.apply(this,arguments);
},
_rearrange: function(event, i, a, hardRefresh) {
a ? a[0].appendChild(this.placeholder[0]) :
i.item[0].parentNode.insertBefore(this.placeholder[0], (this.direction == 'down' ? i.item[0] : i.item[0].nextSibling));
this._refix(i);
//Various things done here to improve the performance:
// 1. we create a setTimeout, that calls refreshPositions
// 2. on the instance, we have a counter variable, that get's higher after every append
// 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same
// 4. this lets only the last addition to the timeout stack through
this.counter = this.counter ? ++this.counter : 1;
var self = this, counter = this.counter;
window.setTimeout(function() {
if(counter == self.counter) self.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove
},0);
},
_refix: function(a) {
var prev = this._fixPrev;
var curr = this._returnItems();
var Fixcodes = this.options.fixed;
var NoFixed = [];
var Fixed = [];
var Mixed = []
var post = [];
for(var i=0;i<Fixcodes.length;++i) {
var fix_index = Fixcodes[i];
var fix_item = prev[fix_index];
var j = 0;
for(j=0;j<curr.length && curr[j].item.get(0) != fix_item.item.get(0);++j) {}
curr.splice(j,1);
Fixed.push(fix_item);
}
for(var i=0;i<curr.length;++i) {
if(curr[i].item.get(0) != this.currentItem.get(0)) {
NoFixed.push(curr[i]);
}
}
var fix_count = 0;
var nofix_count = 0;
for(var i=0;i<Fixed.length + NoFixed.length;++i) {
if(Fixcodes.indexOf(i) >= 0) {
Mixed.push(Fixed[fix_count++]);
}
else {
Mixed.push(NoFixed[nofix_count++]);
}
}
var parent = this.currentItem.get(0).parentNode;
var allchild = parent.children;
for(var i=0;i<Mixed.length;++i) {
parent.removeChild(Mixed[i].item.get(0));
parent.appendChild(Mixed[i].item.get(0));
}
},
_returnItems: function(event) {
this.containers = [this];
var items = [];
var self = this;
var queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { item: this.currentItem }) : $(this.options.items, this.element), this]];
var connectWith = $.ui.sortable.prototype._connectWith.apply;
if(connectWith) {
for (var i = connectWith.length - 1; i >= 0; i--){
var cur = $(connectWith[i]);
for (var j = cur.length - 1; j >= 0; j--){
var inst = $.data(cur[j], 'sortable');
if(inst && inst != this && !inst.options.disabled) {
queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]);
this.containers.push(inst);
}
};
};
}
for (var i = queries.length - 1; i >= 0; i--) {
var targetData = queries[i][1];
var _queries = queries[i][0];
for (var j=0, queriesLength = _queries.length; j < queriesLength; j++) {
var item = $(_queries[j]);
item.data('sortable-item', targetData); // Data for target checking (mouse manager)
items.push({
item: item,
instance: targetData,
width: 0, height: 0,
left: 0, top: 0
});
};
};
return items;
},
value: function(input) {
//console.log("test");
$.ui.sortable.prototype.value.apply(this,arguments);
}
});
})(jQuery);
并倾倒其余的答案,以防万一
依赖
https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.13/jquery-ui.min.js
脚本
function randomColor() { //for a little fun ;)
var r = (Math.floor(Math.random()*256));
var g = (Math.floor(Math.random()*256));
var b = (Math.floor(Math.random()*256));
return "#" + r.toString(16) + g.toString(16) + b.toString(16)
}
$(function() {
$("#sortable1").fixedsortable({
fixed: "> .static", //you can use css selector
sort: function() { //you can add events as well, without getting confused. for example:
$(".static").css("background",randomColor()) //change the fixed items background
},
change: function(event,ui) {
$(ui.item[0]).css("border","2px solid "+randomColor()) //change the captured border color
},
stop: function(event,ui) {
$(ui.item[0]).css("border","2px solid #777"); //change the back the css modifications
$("#sortable1 > li.static").css("background","#aaa");
}
});
$("#sortable2").fixedsortable({ //you can use jQuery object as selector
fixed: $("li[foo]").css("background","red")
});
$("#sortable3").fixedsortable({
fixed: [2,4], //you can use array of zero base indexes as selector
update: function(event, ui) {
alert($(this).fixedsortable('toArray')) //the fixedsortable('toArray') also works
}
})
$("#sortable4").fixedsortable({
fixed: 5 //you can fix a single item with a simple integer
})
});
HTML
<body>
<div style="width:120px;float:left;">
<ul id="sortable1">
<li><a href="#">oranges</a></li>
<li class="static"><a href="#">apples</a></li>
<li><a href="#">bananas</a></li>
<li><a href="#">pineapples</a></li>
<li><a href="#">grapes</a></li>
<li class="static"><a href="#">pears</a></li>
<li><a href="#">mango</a></li>
</ul>
<ul id="sortable2">
<li>bananas</li>
<li foo="asd">oranges</li>
<li foo="dsa">apples</li>
<li>pineapples</li>
<li>grapes</li>
<li>pears</li>
<li>mango</li>
</ul>
</div>
<div style="width:120px;float:left;">
<ul id="sortable3">
<li id="fru_1">bananas</li>
<li id="fru_2">oranges</li>
<li id="fru_3" style="background:#f4f">apples</li>
<li id="fru_4">pineapples</li>
<li id="fru_5" style="background:#faaba9">grapes</li>
<li id="fru_6">pears</li>
<li id="fru_7">mango</li>
</ul>
<ul id="sortable4">
<li>bananas</li>
<li>oranges</li>
<li>apples</li>
<li>pineapples</li>
<li>grapes</li>
<li style="background:#dada00">pears</li>
<li>mango</li>
</ul>
</div>
</body>
CSS
ul {margin:10px;}
ul#sortable1 > li, ul#sortable2 > li, ul#sortable3 > li, ul#sortable4 > li {
display:block;
width:100px;
height:15px;
padding: 3px;
background: #aaa;
border: 2px solid #777;
margin: 1px;
}
ul#sortable1 > li.static {
opacity:0.5;
}
答案 8 :(得分:0)
也许这会对某人有所帮助:使用方法&#34;禁用&#34;和&#34;启用&#34;。例 HTML:
<ul class="sortable">
<li>You can move me</li>
<li data-state="lifeless">You can't move me.</li>
</ul>
脚本:
$('#sortable').sortable();
$('#sortable').mousedown(function() {
if($(this).data('state')=='lifeless') $('#sortable').sortable('disable');
else $('#sortable').sortable('enable');
});