jQuery UI-默认情况下，“选择"的多项选择行为(ctrl + click)? [英] jQuery UI - Multiple Select behavior (ctrl+click) by default for 'selectable'?

问题描述

是否有一种方法可以使jQuery UI的Selectable交互进入多次选择"(通过左键单击，再次单击以取消选择)行为，而不是单击仅选择并取消选择"的所有行为，还有其他行为吗?

Is there a way to make the jQuery UI's Selectable interaction go into 'multiple selects' (select via left click, click again to unselect) behavoir, rather than the click-to-exclusively-select-and-unselect-everything-else behavior?

推荐答案

我认为这将为您提供所需的功能:

I think this will give you the sort of functionality you are looking for:

1)在最新的jquery-ui.js的Selectable()部分中，将_MouseStart函数修改为如下所示:

1) In the Selectable() section of the latest jquery-ui.js, modify the _MouseStart function to look like this:

_mouseStart: function(event) {
    var self = this;

    this.opos = [event.pageX, event.pageY];

    if (this.options.disabled)
        return;

    var options = this.options;

    this.selectees = $(options.filter, this.element[0]);

    this._trigger("start", event);

    $(options.appendTo).append(this.helper);
    // position helper (lasso)
    this.helper.css({
        "left": event.clientX,
        "top": event.clientY,
        "width": 0,
        "height": 0
    });

    if (options.autoRefresh) {
        this.refresh();
    }
    var hasMulti = false;
    if(this.element.attr("multi") == undefined || !eval(this.element.attr("multi")))
    {
        hasMulti = true;
    }

    this.selectees.filter('.ui-selected').each(function() {
        var selectee = $.data(this, "selectable-item");
        selectee.startselected = true;
        if (!event.metaKey) {
            if(hasMulti)
            {
                selectee.$element.removeClass('ui-selected');
                selectee.selected = false;
                selectee.$element.addClass('ui-unselecting');
                selectee.unselecting = true;
                // selectable UNSELECTING callback
                self._trigger("unselecting", event, {
                    unselecting: selectee.element
                });
            }
        }
    });

    $(event.target).parents().andSelf().each(function() {
        var selectee = $.data(this, "selectable-item");
        if (selectee) {
            var doSelect = false;
            if(hasMulti)
            {
                doSelect = !event.metaKey ||  !selectee.$element.hasClass('ui-selected');
            }
            else
            {
                doSelect =  !selectee.$element.hasClass('ui-selected');
            }

            selectee.$element
                .removeClass(doSelect ? "ui-unselecting" : "ui-selected")
                .addClass(doSelect ? "ui-selecting" : "ui-unselecting");
            selectee.unselecting = !doSelect;
            selectee.selecting = doSelect;
            selectee.selected = doSelect;
            // selectable (UN)SELECTING callback
            if (doSelect) {
                self._trigger("selecting", event, {
                    selecting: selectee.element
                });
            } else {
                self._trigger("unselecting", event, {
                    unselecting: selectee.element
                });
            }
            return false;
        }
    });

}

2)然后，在您的标记中，将一个名为"multi"的属性添加到您的列表元素，并将其设置为"true".

2) Then, in your markup, add an attribute called "multi" to your list element and set it to "true".

<ul multi="true">
  <li>test1</li>
  <li>test2</li>
</ul>

您将看到我添加了一个名为hasMulti的变量，并在两个条件中使用了该变量以实现所需的行为.

You will see I added a var called hasMulti and used it in two conditionals to achieve the desired behavior.

这将使您可以选择多个项目(并取消选择)，而无需使用ctrl +鼠标单击.

This will make it so that you can selected multiple items (and unselect) without having to use ctrl + mouse click.

如果我完全误解了您的问题.然后忽略此帖子.

If I totally misinterpreted your question. Then disregard this post.

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