ExtJS[Desktop]实现图标换行示例代码_extjs

initShortcut : function() {
var btnHeight = 64;
var btnWidth = 64;
var btnPadding = 30;
var col = {index : 1,x : btnPadding};
var row = {index : 1,y : btnPadding};
var bottom;
var numberOfItems = 0;
var taskBarHeight = Ext.query(".ux-taskbar")[0].clientHeight + 40;
var bodyHeight = Ext.getBody().getHeight() - taskBarHeight;
var items = Ext.query(".ux-desktop-shortcut");

for (var i = 0, len = items.length; i numberOfItems += 1;
bottom = row.y + btnHeight;
if (((bodyHeight (btnHeight + btnPadding)) {
numberOfItems = 0;
col = {index : col.index++,x : col.x + btnWidth + btnPadding};
row = {index : 1,y : btnPadding};
}
Ext.fly(items[i]).setXY([col.x, row.y]);
row.index++;
row.y = row.y + btnHeight + btnPadding;
}
}

createDataView: function () {
var me = this;
return {
xtype: 'dataview',
overItemCls: 'x-view-over',
trackOver: true,
itemSelector: me.shortcutItemSelector,
store: me.shortcuts,
tpl: new Ext.XTemplate(me.shortcutTpl),
listeners:{
resize:me.initShortcut
}
};
}

afterRender: function () {
var me = this;
me.callParent();
me.el.on('contextmenu', me.onDesktopMenu, me);
Ext.Function.defer(me.initShortcut,1);
}