我们正在使用extjs 4.1,我遇到了一个奇怪的问题。我们有3个标签组,这些标签包含extjs网格。前2个中的extjs网格可以很好地加载数据,并且还具有过滤器选项。第3个标签中的extjs网格,加载数据但不显示过滤器菜单。但是,在第3个选项卡上刷新页面时,网格将显示过滤器菜单。我是extjs的新手。请帮忙。
ext-all-debug-w-comments-v4.1.2a.js:144232 Uncaught TypeError: Cannot read property 'enable' of null
at constructor.showMenuBy (ext-all-debug-w-comments-v4.1.2a.js:144232)
at constructor.onHeaderTriggerClick (ext-all-debug-w-comments-v4.1.2a.js:141028)
at constructor.onElClick (ext-all-debug-w-comments-v4.1.2a.js:142124)
at HTMLDivElement.eval (eval at cacheableFunctionFactory (ext-all-debug-w-comments-v4.1.2a.js:683), <anonymous>:6:13)
at HTMLDivElement.wrap (ext-all-debug-w-comments-v4.1.2a.js:15197)
以下行是发生错误的地方,但此行在extjs中
showMenuBy: function(t, header) {
var menu = this.getMenu(),
groupMenuItem = menu.down('#groupMenuItem'), //this menu is null and therefore the error but this is auto generated by extjs
groupMenuMeth = header.groupable === false ? 'disable' : 'enable',
groupToggleMenuItem = menu.down('#groupToggleMenuItem');
groupMenuItem[groupMenuMeth](); //this statement is null and throws the error
if (groupToggleMenuItem) {
groupToggleMenuItem[this.view.store.isGrouped() ? 'enable' : 'disable']();
}
Ext.grid.header.Container.prototype.showMenuBy.apply(this, arguments);
}
//来自onHeaderTrigerClick stackTrace的代码:
onHeaderTriggerClick: function(header, e, t) {
// generate and cache menu, provide ability to cancel/etc
var me = this;
if (header.fireEvent('headertriggerclick', me, header, e, t) !== false && me.fireEvent("headertriggerclick", me, header, e, t) !== false) {
me.showMenuBy(t, header);
}
}
//来自onElClick的代码:
onElClick: function(e, t) {
// The grid's docked HeaderContainer.
var me = this,
ownerHeaderCt = me.getOwnerHeaderCt();
if (ownerHeaderCt && !ownerHeaderCt.ddLock) {
// Firefox doesn't check the current target in a within check.
// Therefore we check the target directly and then within (ancestors)
if (me.triggerEl && (e.target === me.triggerEl.dom || t === me.triggerEl.dom || e.within(me.triggerEl))) {
ownerHeaderCt.onHeaderTriggerClick(me, e, t);
// if its not on the left hand edge, sort
} else if (e.getKey() || (!me.isOnLeftEdge(e) && !me.isOnRightEdge(e))) {
me.toggleSortState();
ownerHeaderCt.onHeaderClick(me, e, t);
}
}
}
答案 0 :(得分:1)
在每种情况下,参数header
为null
。
答案 1 :(得分:0)
这似乎是一个CSS问题,可能是由组件加载到标头的高度和高度的顺序引起的。 在CSS下方使用:
Ubuntu
标识标头组件的ID,并使用它代替 .ui-grid-header-cell