多选,取消选定Boundlist

Multiselect & deselect Boundlist

本文关键字：Boundlist 取消 多选      更新时间：2023-09-26

我必须使一个自定义的边界列表的形式，它的工作很好，当它有单一的选择和不取消选择。我如何告诉边界列表取消选择和多选?

不工作:

var mode = this.multiselect ? 'MULTI' : 'SINGLE';
var sm = bl.getSelectionModel();  // TODO 
sm.setSelectionMode(mode);
sm.allowDeselect = this.deselect;

不工作(这是在一个扩展的FieldContainer):

var bl = Ext.create('Ext.view.BoundList', {
    multiSelect: this.multiselect,
    deselect: this.deselect,
    //...

不确定你想要实现什么行为。默认情况下，多模式允许取消选择，在这种情况下，allowDeselect配置选项不适用。下面是Ext.selection.Model文档中的一段话:

allowDeselect: Boolean

允许用户取消选择DataView、List或Grid中的记录。仅适用于模式为'SINGLE'

如果我理解正确，您希望能够通过在多选择中简单单击取消选择唯一选定的记录。

试试这个代码:

// Allow deselecting the only selected record in MULTI mode with a simple click.
// Note that this will only happen when allowdeselect is true
Ext.override( Ext.selection.Model, {
    selectWithEvent: function(record, e, keepExisting) {
        var me = this;
        switch (me.selectionMode) {
            case 'MULTI':
                if (e.ctrlKey && me.isSelected(record)) {
                    me.doDeselect(record, false);
                } else if (e.shiftKey && me.lastFocused) {
                    me.selectRange(me.lastFocused, record, e.ctrlKey);
                } else if (e.ctrlKey) {
                    me.doSelect(record, true, false);
                // Mod Start
                } else if (me.isSelected(record) && !e.shiftKey && !e.ctrlKey && me.selected.getCount() == 1 && me.allowDeselect) {
                    me.doDeselect(record, false);                    
                // Mod End                        
                } else if (me.isSelected(record) && !e.shiftKey && !e.ctrlKey && me.selected.getCount() > 1) {
                    me.doSelect(record, keepExisting, false);
                } else {
                    me.doSelect(record, false);
                }
                break;
            case 'SIMPLE':
                if (me.isSelected(record)) {
                    me.doDeselect(record);
                } else {
                    me.doSelect(record, true);
                }
                break;
            case 'SINGLE':
                // if allowDeselect is on and this record isSelected, deselect it
                if (me.allowDeselect && me.isSelected(record)) {
                    me.doDeselect(record);
                // select the record and do NOT maintain existing selections
                } else {
                    me.doSelect(record, false);
                }
                break;
        }
    },
});
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