Sencha列表用键盘滚动 [英] Sencha list scrolling with keyboard

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本文介绍了Sencha列表用键盘滚动的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我在我的应用程序中使用了sencha列表。它是一个可滚动列表。我想通过键盘上的向上向下键和手势滚动列表。有人知道如何做吗?



请帮助我。



这是我的代码:

  {
xtype:'list',
pinHeaders:false,
variableHeights:false,
itemTpl:
'< div>'+
'< div> {name}< / div>'+
'< / div>',
存储:'myStore',
分组:true,
onItemDisclosure:true
}


解决方案

查看这个小提琴 https:// fiddle .sencha.com /#fiddle / 53t



您可以在应用程序启动功能中的keydown事件中添加文档事件监听器,然后按照您的列表项。

  Ext.application({
name:'Fiddle',
launch:function(){
Ext.Viewport.add({
xtype:'slidelist'
});
document.addEventListener(keydown,Ext.bind(onBackKeyDown,this),false);
function onBackKeyDown(e){
switch(e.keyIdentifier)
{
caseUp:
Ext.ComponentQuery.query('slidelist')[0 ] .getScrollable()。getScroller()。scrollBy(0,-47);
break;
caseDown:
Ext.ComponentQuery.query('slidelist')[0] .getScrollable()。getScroller()。scrollBy(0,47);
break;
默认值:
break;
}
}
}
});


I am using sencha list in my application. It is a scrollable list. I want to scroll the list by up, down key and hand gesture in keyboard. Does anyone know how to do it?

Please help me.

This is my code:

{      
    xtype: 'list',
    pinHeaders: false,
    variableHeights: false,
    itemTpl:
            '<div>' +
            '<div>{name}</div>' +
            '</div>',
    store: 'myStore',
    grouped: true,
    onItemDisclosure: true
}

解决方案

Check out this fiddle https://fiddle.sencha.com/#fiddle/53t

You can add a document eventlistener on keydown event in your application launch function and then scroll by the height of your list item.

Ext.application({
    name: 'Fiddle',
    launch: function() {
        Ext.Viewport.add({
            xtype: 'slidelist'
        });
        document.addEventListener("keydown", Ext.bind(onBackKeyDown, this), false);
        function onBackKeyDown(e) {
            switch(e.keyIdentifier)
            {
                case "Up":
                    Ext.ComponentQuery.query('slidelist')[0].getScrollable().getScroller().scrollBy(0, -47);
                break;
                case "Down":
                    Ext.ComponentQuery.query('slidelist')[0].getScrollable().getScroller().scrollBy(0, 47);
                break;
                default:
                break;
            }
        }
    }
});

这篇关于Sencha列表用键盘滚动的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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