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extjs 6:treepicker不触发更改事件

treepanel extjs6-classic extjs6 extjs events

2

zeke · 技术社区 · 7 年前

请看这里的小提琴: https://fiddle.sencha.com/#fiddle/2iig&view/editor

文件( https://docs.sencha.com/extjs/6.6.0/classic/Ext.ux.TreePicker.html#event-change )列表 'change' 在events部分中,但是当我设置值或重置字段时,此事件不会触发。这个 'select' 事件按预期激发,但仅在用户选择字段时激发。

编辑:

根据snehal下面的建议,我可以使用下面的覆盖来完成这项工作。不确定是否有更简单的方法来做,但这是我能做到的最好的:

Ext.define('MyApp.overrides.TreePicker', {
    override: 'Ext.ux.TreePicker',

    setValue: function (value) {
        var me = this,
            record;
        me.value = value;
        if (me.store.loading) {
            // Called while the Store is loading. Ensure it is processed by the onLoad method.
            return me;
        }
        // try to find a record in the store that matches the value
        record = value ? me.store.getNodeById(value) : me.store.getRoot();
        if (value === undefined) {
            record = me.store.getRoot();
            me.value = record.getId();
        } else {
            record = me.store.getNodeById(value);
        }

        // zeke - this is the only line I added to the original source
        // without this the 'change' event is not fired
        me.callSuper([value]);

        // set the raw value to the record's display field if a record was found
        me.setRawValue(record ? record.get(me.displayField) : '');

        return me;
    }
});

1 回复 | 直到 7 年前

1

2

Rohit Sharma 7 年前

因为 setValue 函数不调用 this.callParent() 是的。你可以在里面做这样的事 设定值 功能。

setValue: function(value) {
    var me = this,
        record;
    if (me.store.loading) {
        // Called while the Store is loading. Ensure it is processed by the onLoad method.
        return me;
    }

    // try to find a record in the store that matches the value
    record = value ? me.store.getById(value) : me.store.getRoot();

    me.callParent([record.get('valueField')]);
    return me;
},