关于Extjs_gridpanel设置autoHeighttrue时横向滚动条的问题

使用gridpanel时我们有时需要给设置autoHeight:true，但这时如果表格的宽度大于它的容器的宽度，多余的内容就会被隐藏而不会出现横向的滚动条，费了老大劲儿才找到了解决办法，方法就是给gridpanel的option config添加如下属性：

Js代码
viewConfig : {
layout : function() {
if (!this.mainBody) {
return; // not rendered
}
var g = this.grid;
var c = g.getGridEl();
var csize = c.getSize(true);
var vw = csize.width;
if (!g.hideHeaders && (vw < 20 || csize.height < 20)) { // display:
// none?
return;
}
if (g.autoHeight) {
this.el.dom.style.width = "100%";
this.el.dom.style.overflow = "auto";
this.el.dom.firstChild.style.overflow = "visible";
this.el.dom.firstChild.style.cssFloat = "left";
this.el.dom.firstChild.firstChild.style.cssFloat = "left";
this.el.dom.firstChild.firstChild.nextSibling.style.cssFloat = "left";
this.el.dom.firstChild.firstChild.firstChild.style.overflow = "visible";
this.el.dom.firstChild.firstChild.nextSibling.style.overflow = "visible";
} else {
this.el.setSize(csize.width, csize.height);
var hdHeight = this.mainHd.getHeight();
var vh = csize.height - (hdHeight);
this.scroller.setSize(vw, vh);
if (this.innerHd) {
this.innerHd.style.width = (vw) + 'px';
}
}
if (this.forceFit) {
if (this.lastViewWidth != vw) {
this.fitColumns(false, false);
this.lastViewWidth = vw;
}
} else {
this.autoExpand();
this.syncHeaderScroll();
}
this.onLayout(vw, vh);
}
}

viewConfig : {
layout : function() {
if (!this.mainBody) {
return; // not rendered
}
var g = this.grid;
var c = g.getGridEl();
var csize = c.getSize(true);
var vw = csize.width;
if (!g.hideHeaders && (vw < 20 || csize.height < 20)) { // display:
// none?
return;
}
if (g.autoHeight) {
this.el.dom.style.width = "100%";
this.el.dom.style.overflow = "auto";
this.el.dom.firstChild.style.overflow = "visible";
this.el.dom.firstChild.style.cssFloat = "left";
this.el.dom.firstChild.firstChild.style.cssFloat = "left";
this.el.dom.firstChild.firstChild.nextSibling.style.cssFloat = "left";
this.el.dom.firstChild.firstChild.firstChild.style.overflow = "visible";
this.el.dom.firstChild.firstChild.nextSibling.style.overflow = "visible";
} else {
this.el.setSize(csize.width, csize.height);
var hdHeight = this.mainHd.getHeight();
var vh = csize.height - (hdHeight);
this.scroller.setSize(vw, vh);
if (this.innerHd) {
this.innerHd.style.width = (vw) + 'px';
}
}
if (this.forceFit) {
if (this.lastViewWidth != vw) {
this.fitColumns(false, false);
this.lastViewWidth = vw;
}
} else {
this.autoExpand();
this.syncHeaderScroll();
}
this.onLayout(vw, vh);
}
}解决过程中遇到了好多问题，如header的背景不全，不是所有的列都能resize（已经设置了resizable:true），所以可能还有很多问题我没有发现。如果谁发现有什么问题，希望不吝赐教。
修改：

Js代码
viewConfig : {
layout : function() {
if (!this.mainBody) {
return; // not rendered
}
var g = this.grid;
var c = g.getGridEl();
var csize = c.getSize(true);
var vw = csize.width;
if (!g.hideHeaders && (vw < 20 || csize.height < 20)) { // display:
// none?
return;
}
if (g.autoHeight) {
if (this.innerHd) {
this.innerHd.style.width = (vw) + 'px';
}
} else {
this.el.setSize(csize.width, csize.height);
var hdHeight = this.mainHd.getHeight();
var vh = csize.height - (hdHeight);
this.scroller.setSize(vw, vh);
if (this.innerHd) {
this.innerHd.style.width = (vw) + 'px';
}
}
if (this.forceFit) {
if (this.lastViewWidth != vw) {
this.fitColumns(false, false);
this.lastViewWidth = vw;
}
} else {
this.autoExpand();
this.syncHeaderScroll();
}
this.onLayout(vw, vh);
}
}

又发现了一个简单的方法比上边效果好多了，嘿嘿