Ext3.x版本锁定列和多表头的插件

Ext3.x版本的锁定列和多表头都是通过插件实现，但是这两个插件不能一起工作，而实际上这样的业务也是存在的，即在多表头的情况下也需要锁定列。

在Ext的论坛上有很多这样的需求，都没有一个解决方案，除了一个需要收费的（150没有），而且联系起来也麻烦。后面决定自己做一个。

效果如下图：

　　


使用方法：

this.view = new Ext.ux.grid.LockingHeaderGroupView({grows : [[{},{},{},{"align":"center","colspan":2,"header":"合并后名称"},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{}]]});

文件：

/*!
* Ext JS Library 3.3.0
* Copyright(c) 2006-2010 Ext JS, Inc.
* licensing@extjs.com
* http://www.extjs.com/license */
Ext.ns('Ext.ux.grid');

Ext.ux.grid.LockingHeaderGroupView = Ext.extend(Ext.grid.GridView, {
lockText : '锁定',
unlockText : '解锁',
rowBorderWidth : 1,
lockedBorderWidth : 1,
//先支持只有两层的多表头情况
//从外部传入
//grows : [[{},{},{},{"align":"center","colspan":2,"header":"合并后名称"},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{}]],
/*
* This option ensures that height between the rows is synchronized
* between the locked and unlocked sides. This option only needs to be used
* when the row heights aren't predictable.
*/
syncHeights: false,

initTemplates : function(){
var ts = this.templates || {};

if (!ts.masterTpl) {
ts.masterTpl = new Ext.Template(
'<div class="x-grid3" hidefocus="true">',
'<div class="x-grid3-locked">',
'<div class="x-grid3-header"><div class="x-grid3-header-inner"><div class="x-grid3-header-offset" style="{lstyle}">{lockedHeader}</div></div><div class="x-clear"></div></div>',
//'<div class="x-grid3-scroller"><div class="x-grid3-body" style="{lstyle}">{lockedBody}</div><div class="x-grid3-scroll-spacer"></div></div>',
//锁定列加合计时，会导致合计行锁定部分和未锁定部分错行
'<div class="x-grid3-scroller"><div class="x-grid3-body" style="{lstyle}">{lockedBody}</div></div>',
'</div>',
'<div class="x-grid3-viewport x-grid3-unlocked">',
'<div class="x-grid3-header"><div class="x-grid3-header-inner"><div class="x-grid3-header-offset" style="{ostyle}">{header}</div></div><div class="x-clear"></div></div>',
'<div class="x-grid3-scroller"><div class="x-grid3-body" style="{bstyle}">{body}</div><a href="#" class="x-grid3-focus" tabIndex="-1"></a></div>',
'</div>',
'<div class="x-grid3-resize-marker"> </div>',
'<div class="x-grid3-resize-proxy"> </div>',
'</div>'
);
}

if(!ts.gcell){
ts.gcell = new Ext.XTemplate('<td class="x-grid3-hd x-grid3-gcell x-grid3-td-{id} ux-grid-hd-group-row-{row} {cls}" style="{style}">', '<div {tooltip} class="x-grid3-hd-inner x-grid3-hd-{id}" unselectable="on" style="{istyle}">', this.grid.enableHdMenu ? '<a class="x-grid3-hd-btn" href="#"></a>' : '', '{value}</div></td>');
}
this.hrowRe = new RegExp("ux-grid-hd-group-row-(\\d+)", "");

this.templates = ts;

Ext.ux.grid.LockingHeaderGroupView.superclass.initTemplates.call(this);
},

getEditorParent : function(ed){
return this.el.dom;
},

initElements : function(){
var el             = Ext.get(this.grid.getGridEl().dom.firstChild),
lockedWrap     = el.child('div.x-grid3-locked'),
lockedHd       = lockedWrap.child('div.x-grid3-header'),
lockedScroller = lockedWrap.child('div.x-grid3-scroller'),
mainWrap       = el.child('div.x-grid3-viewport'),
mainHd         = mainWrap.child('div.x-grid3-header'),
scroller       = mainWrap.child('div.x-grid3-scroller');

if (this.grid.hideHeaders) {
lockedHd.setDisplayed(false);
mainHd.setDisplayed(false);
}

if(this.forceFit){
scroller.setStyle('overflow-x', 'hidden');
}

Ext.apply(this, {
el      : el,
mainWrap: mainWrap,
mainHd  : mainHd,
innerHd : mainHd.dom.firstChild,
scroller: scroller,
mainBody: scroller.child('div.x-grid3-body'),
focusEl : scroller.child('a'),
resizeMarker: el.child('div.x-grid3-resize-marker'),
resizeProxy : el.child('div.x-grid3-resize-proxy'),
lockedWrap: lockedWrap,
lockedHd: lockedHd,
lockedScroller: lockedScroller,
lockedBody: lockedScroller.child('div.x-grid3-body'),
lockedInnerHd: lockedHd.child('div.x-grid3-header-inner', true)
});

this.focusEl.swallowEvent('click', true);
},

getLockedRows : function(){
return this.hasRows() ? this.lockedBody.dom.childNodes : [];
},

getLockedRow : function(row){
return this.getLockedRows()[row];
},

getCell : function(row, col){
var lockedLen = this.cm.getLockedCount();
if(col < lockedLen){
return this.getLockedRow(row).getElementsByTagName('td')[col];
}
return Ext.ux.grid.LockingHeaderGroupView.superclass.getCell.call(this, row, col - lockedLen);
},

getHeaderCell : function(index){
var lockedLen = this.cm.getLockedCount();
if(index < lockedLen){
return this.lockedHd.dom.getElementsByTagName('td')[index];
}
return Ext.ux.grid.LockingHeaderGroupView.superclass.getHeaderCell.call(this, index - lockedLen);
},

addRowClass : function(row, cls){
var lockedRow = this.getLockedRow(row);
if(lockedRow){
this.fly(lockedRow).addClass(cls);
}
Ext.ux.grid.LockingHeaderGroupView.superclass.addRowClass.call(this, row, cls);
},

removeRowClass : function(row, cls){
var lockedRow = this.getLockedRow(row);
if(lockedRow){
this.fly(lockedRow).removeClass(cls);
}
Ext.ux.grid.LockingHeaderGroupView.superclass.removeRowClass.call(this, row, cls);
},

removeRow : function(row) {
Ext.removeNode(this.getLockedRow(row));
Ext.ux.grid.LockingHeaderGroupView.superclass.removeRow.call(this, row);
},

removeRows : function(firstRow, lastRow){
var lockedBody = this.lockedBody.dom,
rowIndex = firstRow;
for(; rowIndex <= lastRow; rowIndex++){
Ext.removeNode(lockedBody.childNodes[firstRow]);
}
Ext.ux.grid.LockingHeaderGroupView.superclass.removeRows.call(this, firstRow, lastRow);
},

syncScroll : function(e){
this.lockedScroller.dom.scrollTop = this.scroller.dom.scrollTop;
Ext.ux.grid.LockingHeaderGroupView.superclass.syncScroll.call(this, e);
},

updateSortIcon : function(col, dir){
var sortClasses = this.sortClasses,
lockedHeaders = this.lockedHd.select('td').removeClass(sortClasses),
headers = this.mainHd.select('td').removeClass(sortClasses),
lockedLen = this.cm.getLockedCount(),
cls = sortClasses[dir == 'DESC' ? 1 : 0];

if(col < lockedLen){
lockedHeaders.item(col).addClass(cls);
}else{
headers.item(col - lockedLen).addClass(cls);
}
},

updateAllColumnWidths : function(){
var tw = this.getTotalWidth(),
clen = this.cm.getColumnCount(),
lw = this.getLockedWidth(),
llen = this.cm.getLockedCount(),
ws = [], len, i;
this.updateLockedWidth();
for(i = 0; i < clen; i++){
ws[i] = this.getColumnWidth(i);
var hd = this.getHeaderCell(i);
hd.style.width = ws[i];
}
var lns = this.getLockedRows(), ns = this.getRows(), row, trow, j;
for(i = 0, len = ns.length; i < len; i++){
row = lns[i];
row.style.width = lw;
if(row.firstChild){
row.firstChild.style.width = lw;
trow = row.firstChild.rows[0];
for (j = 0; j < llen; j++) {
trow.childNodes[j].style.width = ws[j];
}
}
row = ns[i];
row.style.width = tw;
if(row.firstChild){
row.firstChild.style.width = tw;
trow = row.firstChild.rows[0];
for (j = llen; j < clen; j++) {
trow.childNodes[j - llen].style.width = ws[j];
}
}
}
this.onAllColumnWidthsUpdated(ws, tw);
this.syncHeaderHeight();
},

updateColumnWidth : function(col, width){
var w = this.getColumnWidth(col),
llen = this.cm.getLockedCount(),
ns, rw, c, row;
this.updateLockedWidth();
if(col < llen){
ns = this.getLockedRows();
rw = this.getLockedWidth();
c = col;
}else{
ns = this.getRows();
rw = this.getTotalWidth();
c = col - llen;
}
var hd = this.getHeaderCell(col);
hd.style.width = w;
for(var i = 0, len = ns.length; i < len; i++){
row = ns[i];
row.style.width = rw;
if(row.firstChild){
row.firstChild.style.width = rw;
row.firstChild.rows[0].childNodes[c].style.width = w;
}
}
this.onColumnWidthUpdated(col, w, this.getTotalWidth());
this.syncHeaderHeight();
},

updateColumnHidden : function(col, hidden){
var llen = this.cm.getLockedCount(),
ns, rw, c, row,
display = hidden ? 'none' : '';
this.updateLockedWidth();
if(col < llen){
ns = this.getLockedRows();
rw = this.getLockedWidth();
c = col;
}else{
ns = this.getRows();
rw = this.getTotalWidth();
c = col - llen;
}
var hd = this.getHeaderCell(col);
hd.style.display = display;
for(var i = 0, len = ns.length; i < len; i++){
row = ns[i];
row.style.width = rw;
if(row.firstChild){
row.firstChild.style.width = rw;
row.firstChild.rows[0].childNodes[c].style.display = display;
}
}
this.onColumnHiddenUpdated(col, hidden, this.getTotalWidth());
delete this.lastViewWidth;
this.layout();
},

doRender : function(cs, rs, ds, startRow, colCount, stripe){
var ts = this.templates, ct = ts.cell, rt = ts.row, last = colCount-1,
tstyle = 'width:'+this.getTotalWidth()+';',
lstyle = 'width:'+this.getLockedWidth()+';',
buf = [], lbuf = [], cb, lcb, c, p = {}, rp = {}, r;
for(var j = 0, len = rs.length; j < len; j++){
r = rs[j]; cb = []; lcb = [];
var rowIndex = (j+startRow);
for(var i = 0; i < colCount; i++){
c = cs[i];
p.id = c.id;
p.css = (i === 0 ? 'x-grid3-cell-first ' : (i == last ? 'x-grid3-cell-last ' : '')) +
(this.cm.config[i].cellCls ? ' ' + this.cm.config[i].cellCls : '');
p.attr = p.cellAttr = '';
p.style = c.style;
//根据配置加入渲染前事件
if(c.scope && c.scope.beforeRenderer){
c.scope.beforeRenderer.call(c.scope, r.data[c.name], p, r, j, i);
}
p.value = c.renderer(r.data[c.name], p, r, rowIndex, i, ds);
if(Ext.isEmpty(p.value)){
p.value = ' ';
}
if(this.markDirty && r.dirty && Ext.isDefined(r.modified[c.name])){
p.css += ' x-grid3-dirty-cell';
}
if(c.locked){
lcb[lcb.length] = ct.apply(p);
}else{
cb[cb.length] = ct.apply(p);
}
}
var alt = [];
if(stripe && ((rowIndex+1) % 2 === 0)){
alt[0] = 'x-grid3-row-alt';
}
if(r.dirty){
alt[1] = ' x-grid3-dirty-row';
}
rp.cols = colCount;
if(this.getRowClass){
alt[2] = this.getRowClass(r, rowIndex, rp, ds);
}
rp.alt = alt.join(' ');
rp.cells = cb.join('');
rp.tstyle = tstyle;
buf[buf.length] = rt.apply(rp);
rp.cells = lcb.join('');
rp.tstyle = lstyle;
lbuf[lbuf.length] = rt.apply(rp);
}
return [buf.join(''), lbuf.join('')];
},
processRows : function(startRow, skipStripe){
if(!this.ds || this.ds.getCount() < 1){
return;
}
var rows = this.getRows(),
lrows = this.getLockedRows(),
row, lrow;
skipStripe = skipStripe || !this.grid.stripeRows;
startRow = startRow || 0;
for(var i = 0, len = rows.length; i < len; ++i){
row = rows[i];
lrow = lrows[i];
row.rowIndex = i;
lrow.rowIndex = i;
if(!skipStripe){
row.className = row.className.replace(this.rowClsRe, ' ');
lrow.className = lrow.className.replace(this.rowClsRe, ' ');
if ((i + 1) % 2 === 0){
row.className += ' x-grid3-row-alt';
lrow.className += ' x-grid3-row-alt';
}
}
this.syncRowHeights(row, lrow);
}
if(startRow === 0){
Ext.fly(rows[0]).addClass(this.firstRowCls);
Ext.fly(lrows[0]).addClass(this.firstRowCls);
}
Ext.fly(rows[rows.length - 1]).addClass(this.lastRowCls);
Ext.fly(lrows[lrows.length - 1]).addClass(this.lastRowCls);
},

syncRowHeights: function(row1, row2){
if(this.syncHeights){
var el1 = Ext.get(row1),
el2 = Ext.get(row2),
h1 = el1.getHeight(),
h2 = el2.getHeight();

if(h1 > h2){
el2.setHeight(h1);
}else if(h2 > h1){
el1.setHeight(h2);
}
}
},

afterRender : function(){
if(!this.ds || !this.cm){
return;
}
var bd = this.renderRows() || [' ', ' '];
this.mainBody.dom.innerHTML = bd[0];
this.lockedBody.dom.innerHTML = bd[1];
this.processRows(0, true);
if(this.deferEmptyText !== true){
this.applyEmptyText();
}
this.grid.fireEvent('viewready', this.grid);
},

renderUI : function(){
var templates = this.templates,
header = this.renderHeaders(),
body = templates.body.apply({rows:' '});

return templates.masterTpl.apply({
body  : body,
header: header[0],
ostyle: 'width:' + this.getOffsetWidth() + ';',
bstyle: 'width:' + this.getTotalWidth()  + ';',
lockedBody: body,
lockedHeader: header[1],
lstyle: 'width:'+this.getLockedWidth()+';'
});
},

afterRenderUI: function(){
var g = this.grid;
this.initElements();
Ext.fly(this.innerHd).on('click', this.handleHdDown, this);
Ext.fly(this.lockedInnerHd).on('click', this.handleHdDown, this);
this.mainHd.on({
scope: this,
mouseover: this.handleHdOver,
mouseout: this.handleHdOut,
mousemove: this.handleHdMove
});
this.lockedHd.on({
scope: this,
mouseover: this.handleHdOver,
mouseout: this.handleHdOut,
mousemove: this.handleHdMove
});
this.scroller.on('scroll', this.syncScroll,  this);
if(g.enableColumnResize !== false){
this.splitZone = new Ext.grid.GridView.SplitDragZone(g, this.mainHd.dom);
this.splitZone.setOuterHandleElId(Ext.id(this.lockedHd.dom));
this.splitZone.setOuterHandleElId(Ext.id(this.mainHd.dom));
}
if(g.enableColumnMove){
this.columnDrag = new Ext.grid.GridView.ColumnDragZone(g, this.innerHd);
this.columnDrag.setOuterHandleElId(Ext.id(this.lockedInnerHd));
this.columnDrag.setOuterHandleElId(Ext.id(this.innerHd));
this.columnDrop = new Ext.grid.HeaderDropZone(g, this.mainHd.dom);
}
if(g.enableHdMenu !== false){
this.hmenu = new Ext.menu.Menu({id: g.id + '-hctx'});
this.hmenu.add(
{itemId: 'asc', text: this.sortAscText, cls: 'xg-hmenu-sort-asc'},
{itemId: 'desc', text: this.sortDescText, cls: 'xg-hmenu-sort-desc'}
);
if(this.grid.enableColLock !== false){
this.hmenu.add('-',
{itemId: 'lock', text: this.lockText, cls: 'xg-hmenu-lock'},
{itemId: 'unlock', text: this.unlockText, cls: 'xg-hmenu-unlock'}
);
}
if(g.enableColumnHide !== false){
this.colMenu = new Ext.menu.Menu({id:g.id + '-hcols-menu'});
this.colMenu.on({
scope: this,
beforeshow: this.beforeColMenuShow,
itemclick: this.handleHdMenuClick
});
this.hmenu.add('-', {
itemId:'columns',
hideOnClick: false,
text: this.columnsText,
menu: this.colMenu,
iconCls: 'x-cols-icon'
});
}
this.hmenu.on('itemclick', this.handleHdMenuClick, this);
}
if(g.trackMouseOver){
this.mainBody.on({
scope: this,
mouseover: this.onRowOver,
mouseout: this.onRowOut
});
this.lockedBody.on({
scope: this,
mouseover: this.onRowOver,
mouseout: this.onRowOut
});
}

if(g.enableDragDrop || g.enableDrag){
this.dragZone = new Ext.grid.GridDragZone(g, {
ddGroup : g.ddGroup || 'GridDD'
});
}
this.updateHeaderSortState();
},

layout : function(){
if(!this.mainBody){
return;
}
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)){
return;
}
this.syncHeaderHeight();
if(g.autoHeight){
this.scroller.dom.style.overflow = 'visible';
this.lockedScroller.dom.style.overflow = 'visible';
if(Ext.isWebKit){
this.scroller.dom.style.position = 'static';
this.lockedScroller.dom.style.position = 'static';
}
}else{
this.el.setSize(csize.width, csize.height);
var hdHeight = this.mainHd.getHeight();
var vh = csize.height - (hdHeight);
}
this.updateLockedWidth();
if(this.forceFit){
if(this.lastViewWidth != vw){
this.fitColumns(false, false);
this.lastViewWidth = vw;
}
}else {
this.autoExpand();
this.syncHeaderScroll();
}
this.onLayout(vw, vh);
},

getOffsetWidth : function() {
return (this.cm.getTotalWidth() - this.cm.getTotalLockedWidth() + this.getScrollOffset()) + 'px';
},

//GROUP 方法
getGroupStyle: function(group, gcol){
var width = 0, hidden = true;
for(var i = gcol, len = gcol + group.colspan; i < len; i++){
if(!this.cm.isHidden(i)){
var cw = this.cm.getColumnWidth(i);
if(typeof cw == 'number'){
width += cw;
}
hidden = false;
}
}
if(group.colspan > 1){
if(Ext.isWebKit){
width += (group.colspan-1);
}else if (Ext.isIE7){
width = width-2;
}else{
width--;
}
}else{
if(Ext.isGecko){
if(gcol==1 || gcol == 3){
width++;
}
}
}
return {
width: (Ext.isBorderBox || (Ext.isWebKit && !Ext.isSafari2) ? width : Math.max(width - this.borderWidth, 0)) + 'px',
hidden: hidden
};
},

updateGroupStyles: function(col){
var tables = this.mainHd.query('.x-grid3-header-offset > table'), tw = this.getTotalWidth(), grows = this.grows;
for(var row = 0; row < tables.length; row++){
tables[row].style.width = tw;
if(row < grows.length){
var cells = tables[row].firstChild.firstChild.childNodes;
for(var i = 0, gcol = 0; i < cells.length; i++){
var group = grows[row][i];
if((typeof col != 'number') || (col >= gcol && col < gcol + group.colspan)){
var gs = Ext.ux.grid.ColumnHeaderGroup.prototype.getGroupStyle.call(this, group, gcol);
cells[i].style.width = gs.width;
cells[i].style.display = gs.hidden ? 'none' : '';
}
gcol += group.colspan;
}
}
}
},

getGroupRowIndex: function(el){
if(el){
var m = el.className.match(this.hrowRe);
if(m && m[1]){
return parseInt(m[1], 10);
}
}
return this.grows.length;
},

getGroupSpan: function(row, col){
if(row < 0){
return {
col: 0,
colspan: this.cm.getColumnCount()
};
}
var r = this.grows[row];
if(r){
for(var i = 0, gcol = 0, len = r.length; i < len; i++){
var group = r[i];
if(col >= gcol && col < gcol + group.colspan){
return {
col: gcol,
colspan: group.colspan
};
}
gcol += group.colspan;
}
return {
col: gcol,
colspan: 0
};
}
return {
col: col,
colspan: 1
};
},

renderHeaders: function(){
var ts = this.templates, headers = [], cm = this.cm, grows = this.grows;
var len = cm.getColumnCount();

if(!grows || grows.length == 0){
//没有多表头，
return this.getLockingHeaders();
}

var lockIndex = -1,lockGrows=[],unlockGrows=[];
for(var i = 0; i < len; i++){
if(cm.isLocked(i)){
//这个字段是锁定字段，根据这个字段所处的位置，将多表头定义的rows分割成两部分
//注意不能break，需要找到最后的一个locked字段
lockIndex = i;
}
}

grows = grows[0];//FIXME 定义分组情况的数组，只支持两级分组
//lockIndex = 5;
//[{},{},{},{"align":"center","colspan":2,"header":"合并后名称"},{},{},{},{},{},{},{},{},{},{},{},{},{},{},{}]
if(lockIndex >= 0){
var index = 0;
for(var i=0;i<grows.length;i++){
var group = grows[i];
var colspan = group.colspan || 1;
index = i+colspan;
if(lockIndex >= (index-1)){
lockGrows.push(group);
}else{
unlockGrows.push(group);
}
}
}
var lastLockCol = 0;
for(var i=0;i<lockGrows.length;i++){
var g = lockGrows[i];
lastLockCol += (g.colspan || 1);
}

//分组表头，包括锁定的分组和未锁定的分组
var lockGroupHeader = this.getGroupHeader(lockGrows,true,0);
var unlockGroupHeader = this.getGroupHeader(unlockGrows,false,lastLockCol);
//实际的表头，包括锁定和未锁定
var lockingHeaders = this.getLockingHeaders();

var s1 = [unlockGroupHeader,lockingHeaders[0]].join('');
var s2 = [lockGroupHeader,lockingHeaders[1]].join('');
return [s1,s2];
},

/**
* 返回多表头的header部分
* @param {} grows 列的集合，可能是锁定部分和未锁定部分
* @param {} lockflag 是否锁定的标识
* @param {} firstIndex 比如对于未锁定部分，表示的就是：lockGrows的第一个元素在整个cm的位置
* @return {}
*/
getGroupHeader : function(grows,lockflag,lastLockCol){
var ts = this.templates,cm = this.cm,cells = [];
for(var i = 0, len = grows.length; i < len; i++){
var group = grows[i];
group.colspan = group.colspan || 1;
//FIXME 如果没有分组的列，那么需要加入一个style，参见GridView.getColumnStyle
var colIndex = group.dataIndex ? cm.findColumnIndex(group.dataIndex) : lastLockCol;
//最底下的一层分组（不计算表格的header这一组）
if(group.colspan == 1){
cm.config[colIndex].marginTop = true;
}
var id = this.getColumnId(colIndex), gs = this.getGroupStyle.call(this, group, lastLockCol);
cells[i] = ts.gcell.apply({
cls: (group.header && group.header!='') ? 'ux-grid-hd-group-cell' : 'ux-grid-hd-nogroup-cell',
id: id,
row: 0,
style: 'width:' + gs.width + ';' + (gs.hidden ? 'display:none;' : '') + (group.align ? 'text-align:' + group.align + ';' : ''),
tooltip: group.tooltip ? (Ext.QuickTips.isEnabled() ? 'ext:qtip' : 'title') + '="' + group.tooltip + '"' : '',
istyle: group.align == 'right' ? 'padding-right:16px' : '',
btn: this.grid.enableHdMenu && group.header,
value: group.header || ' '
});
lastLockCol += group.colspan;
}
var tstyle = 'width:'+this.getLockedWidth()+';';
if(!lockflag){
tstyle = 'width:'+this.getTotalWidth()+';';
}
//加入合并的表头
return ts.header.apply({
cells: cells.join(''),
tstyle:tstyle
});
},

/**
* 返回锁定列的表头部分
* @return {}
*/
getLockingHeaders : function(){
var cm = this.cm,
ts = this.templates,
ct = ts.hcell,
cb = [], lcb = [],
p = {},
len = cm.getColumnCount(),
last = len - 1;
for(var i = 0; i < len; i++){
p.id = cm.getColumnId(i);
p.value = cm.getColumnHeader(i) || '';
p.style = this.getColumnStyle(i, true);
p.tooltip = this.getColumnTooltip(i);
p.css = (i === 0 ? 'x-grid3-cell-first ' : (i == last ? 'x-grid3-cell-last ' : '')) +
(cm.config[i].headerCls ? ' ' + cm.config[i].headerCls : '');
if(cm.config[i].align == 'right'){
p.istyle = 'padding-right:16px';
} else {
delete p.istyle;
}
//FIXME 如果是多表头的情况下，需要设置文字上下居中，这里只针对适合2组表头的情况.marginTop在ColumnHeaderGroup.js中设置了
if(!p.istyle){
p.istyle = '';
}
if(cm.config[i].marginTop && !cm.config[i].hidden){
p.istyle += ';margin-top:-20px;height:40px;line-height:40px;';
}
if(cm.isLocked(i)){
lcb[lcb.length] = ct.apply(p);
}else{
cb[cb.length] = ct.apply(p);
}
}

return [ts.header.apply({cells: cb.join(''), tstyle:'width:'+this.getTotalWidth()+';'}),
ts.header.apply({cells: lcb.join(''), tstyle:'width:'+this.getLockedWidth()+';'})];
},

updateHeaders : function(){
var hd = this.renderHeaders();
this.innerHd.firstChild.innerHTML = hd[0];
this.innerHd.firstChild.style.width = this.getOffsetWidth();
this.innerHd.firstChild.firstChild.style.width = this.getTotalWidth();
this.lockedInnerHd.firstChild.innerHTML = hd[1];
var lw = this.getLockedWidth();
this.lockedInnerHd.firstChild.style.width = lw;
this.lockedInnerHd.firstChild.firstChild.style.width = lw;
},

getResolvedXY : function(resolved){
if(!resolved){
return null;
}
var c = resolved.cell, r = resolved.row;
return c ? Ext.fly(c).getXY() : [this.scroller.getX(), Ext.fly(r).getY()];
},

syncFocusEl : function(row, col, hscroll){
Ext.ux.grid.LockingHeaderGroupView.superclass.syncFocusEl.call(this, row, col, col < this.cm.getLockedCount() ? false : hscroll);
},

ensureVisible : function(row, col, hscroll){
return Ext.ux.grid.LockingHeaderGroupView.superclass.ensureVisible.call(this, row, col, col < this.cm.getLockedCount() ? false : hscroll);
},

insertRows : function(dm, firstRow, lastRow, isUpdate){
var last = dm.getCount() - 1;
if(!isUpdate && firstRow === 0 && lastRow >= last){
this.refresh();
}else{
if(!isUpdate){
this.fireEvent('beforerowsinserted', this, firstRow, lastRow);
}
var html = this.renderRows(firstRow, lastRow),
before = this.getRow(firstRow);
if(before){
if(firstRow === 0){
this.removeRowClass(0, this.firstRowCls);
}
Ext.DomHelper.insertHtml('beforeBegin', before, html[0]);
before = this.getLockedRow(firstRow);
Ext.DomHelper.insertHtml('beforeBegin', before, html[1]);
}else{
this.removeRowClass(last - 1, this.lastRowCls);
Ext.DomHelper.insertHtml('beforeEnd', this.mainBody.dom, html[0]);
Ext.DomHelper.insertHtml('beforeEnd', this.lockedBody.dom, html[1]);
}
if(!isUpdate){
this.fireEvent('rowsinserted', this, firstRow, lastRow);
this.processRows(firstRow);
}else if(firstRow === 0 || firstRow >= last){
this.addRowClass(firstRow, firstRow === 0 ? this.firstRowCls : this.lastRowCls);
}
}
this.syncFocusEl(firstRow);
},

getColumnStyle : function(col, isHeader){
var style = !isHeader ? this.cm.config[col].cellStyle || this.cm.config[col].css || '' : this.cm.config[col].headerStyle || '';
style += 'width:'+this.getColumnWidth(col)+';';
if(this.cm.isHidden(col)){
style += 'display:none;';
}
var align = this.cm.config[col].align;
if(align){
style += 'text-align:'+align+';';
}
return style;
},

getLockedWidth : function() {
return (this.cm.getTotalLockedWidth()+1) + 'px';
},

getTotalWidth : function() {
return (this.cm.getTotalWidth() - this.cm.getTotalLockedWidth()) + 'px';
},

getColumnData : function(){
var cs = [], cm = this.cm, colCount = cm.getColumnCount();
for(var i = 0; i < colCount; i++){
var name = cm.getDataIndex(i);
cs[i] = {
name : (!Ext.isDefined(name) ? this.ds.fields.get(i).name : name),
renderer : cm.getRenderer(i),
scope   : cm.getRendererScope(i),
id : cm.getColumnId(i),
style : this.getColumnStyle(i),
locked : cm.isLocked(i)
};
}
return cs;
},

renderBody : function(){
var markup = this.renderRows() || [' ', ' '];
return [this.templates.body.apply({rows: markup[0]}), this.templates.body.apply({rows: markup[1]})];
},

refreshRow: function(record){
var store = this.ds,
colCount = this.cm.getColumnCount(),
columns = this.getColumnData(),
last = colCount - 1,
cls = ['x-grid3-row'],
rowParams = {
tstyle: String.format("width: {0};", this.getTotalWidth())
},
lockedRowParams = {
tstyle: String.format("width: {0};", this.getLockedWidth())
},
colBuffer = [],
lockedColBuffer = [],
cellTpl = this.templates.cell,
rowIndex,
row,
lockedRow,
column,
meta,
css,
i;

if (Ext.isNumber(record)) {
rowIndex = record;
record = store.getAt(rowIndex);
} else {
rowIndex = store.indexOf(record);
}

if (!record || rowIndex < 0) {
return;
}

for (i = 0; i < colCount; i++) {
column = columns[i];

if (i == 0) {
css = 'x-grid3-cell-first';
} else {
css = (i == last) ? 'x-grid3-cell-last ' : '';
}

meta = {
id: column.id,
style: column.style,
css: css,
attr: "",
cellAttr: ""
};
if(column.scope && column.scope.beforeRenderer){
column.scope.beforeRenderer.call(column.scope, record.data[column.name], meta, record, rowIndex, i, store);
}
meta.value = column.renderer.call(column.scope, record.data[column.name], meta, record, rowIndex, i, store);

if (Ext.isEmpty(meta.value)) {
meta.value = ' ';
}

if (this.markDirty && record.dirty && typeof record.modified[column.name] != 'undefined') {
meta.css += ' x-grid3-dirty-cell';
}

if (column.locked) {
lockedColBuffer[i] = cellTpl.apply(meta);
} else {
colBuffer[i] = cellTpl.apply(meta);
}
}

row = this.getRow(rowIndex);
row.className = '';
lockedRow = this.getLockedRow(rowIndex);
lockedRow.className = '';

if (this.grid.stripeRows && ((rowIndex + 1) % 2 === 0)) {
cls.push('x-grid3-row-alt');
}

if (this.getRowClass) {
rowParams.cols = colCount;
cls.push(this.getRowClass(record, rowIndex, rowParams, store));
}

// Unlocked rows
this.fly(row).addClass(cls).setStyle(rowParams.tstyle);
rowParams.cells = colBuffer.join("");
row.innerHTML = this.templates.rowInner.apply(rowParams);

// Locked rows
this.fly(lockedRow).addClass(cls).setStyle(lockedRowParams.tstyle);
lockedRowParams.cells = lockedColBuffer.join("");
lockedRow.innerHTML = this.templates.rowInner.apply(lockedRowParams);
lockedRow.rowIndex = rowIndex;
this.syncRowHeights(row, lockedRow);
this.fireEvent('rowupdated', this, rowIndex, record);
},

refresh : function(headersToo){
this.fireEvent('beforerefresh', this);
this.grid.stopEditing(true);
var result = this.renderBody();
this.mainBody.update(result[0]).setWidth(this.getTotalWidth());
this.lockedBody.update(result[1]).setWidth(this.getLockedWidth());
if(headersToo === true){
this.updateHeaders();
this.updateHeaderSortState();
}
this.processRows(0, true);
this.layout();
this.applyEmptyText();
this.fireEvent('refresh', this);
},

onDenyColumnLock : function(){

},

initData : function(ds, cm){
if(this.cm){
this.cm.un('columnlockchange', this.onColumnLock, this);
}
Ext.ux.grid.LockingHeaderGroupView.superclass.initData.call(this, ds, cm);
if(this.cm){
this.cm.on('columnlockchange', this.onColumnLock, this);
}
},

onColumnLock : function(){
this.refresh(true);
},

handleHdMenuClick : function(item){
var index = this.hdCtxIndex,
cm = this.cm,
id = item.getItemId(),
llen = cm.getLockedCount();
switch(id){
case 'lock':
if(cm.getColumnCount(true) <= llen + 1){
this.onDenyColumnLock();
return undefined;
}
cm.setLocked(index, true);
if(llen != index){
cm.moveColumn(index, llen);
this.grid.fireEvent('columnmove', index, llen);
}
break;
case 'unlock':
if(llen - 1 != index){
cm.setLocked(index, false, true);
cm.moveColumn(index, llen - 1);
this.grid.fireEvent('columnmove', index, llen - 1);
}else{
cm.setLocked(index, false);
}
break;
default:
return Ext.ux.grid.LockingHeaderGroupView.superclass.handleHdMenuClick.call(this, item);
}
return true;
},

handleHdDown : function(e, t){
Ext.ux.grid.LockingHeaderGroupView.superclass.handleHdDown.call(this, e, t);
if(this.grid.enableColLock !== false){
if(Ext.fly(t).hasClass('x-grid3-hd-btn')){
var hd = this.findHeaderCell(t),
index = this.getCellIndex(hd),
ms = this.hmenu.items, cm = this.cm;
ms.get('lock').setDisabled(cm.isLocked(index));
ms.get('unlock').setDisabled(!cm.isLocked(index));
}
}
},

syncHeaderHeight: function(){
var hrow = Ext.fly(this.innerHd).child('tr', true),
lhrow = Ext.fly(this.lockedInnerHd).child('tr', true);
if(!hrow || !lhrow){
return;
}

hrow.style.height = 'auto';
lhrow.style.height = 'auto';
var hd = hrow.offsetHeight,
lhd = lhrow.offsetHeight,
height = Math.max(lhd, hd) + 'px';

hrow.style.height = height;
lhrow.style.height = height;

},

updateLockedWidth: function(){
var lw = this.cm.getTotalLockedWidth(),
tw = this.cm.getTotalWidth() - lw,
csize = this.grid.getGridEl().getSize(true),
lp = Ext.isBorderBox ? 0 : this.lockedBorderWidth,
rp = Ext.isBorderBox ? 0 : this.rowBorderWidth,
vw = (csize.width - lw - lp - rp) + 'px',
so = this.getScrollOffset();
if(!this.grid.autoHeight){
//多页签时，隐藏的页签高度不能为0，否则会导致表体不见
if(csize.height - this.mainHd.getHeight()==0){
var vh = (this.grid.getGridEl().dom.style.height - this.mainHd.getHeight()) + 'px';
this.lockedScroller.dom.style.height = vh;
this.scroller.dom.style.height = vh;
}else{
var vh = (csize.height - this.mainHd.getHeight()) + 'px';
this.lockedScroller.dom.style.height = vh;
this.scroller.dom.style.height = vh;
}
}
this.lockedWrap.dom.style.width = (lw + rp) + 'px';
this.scroller.dom.style.width = vw;
this.mainWrap.dom.style.left = (lw + lp + rp) + 'px';
if(this.innerHd){
this.lockedInnerHd.firstChild.style.width = lw + 'px';
this.lockedInnerHd.firstChild.firstChild.style.width = lw + 'px';
this.innerHd.style.width = vw;
this.innerHd.firstChild.style.width = (tw + rp + so) + 'px';
this.innerHd.firstChild.firstChild.style.width = tw + 'px';
}
if(this.mainBody){
this.lockedBody.dom.style.width = (lw + rp) + 'px';
this.mainBody.dom.style.width = (tw + rp) + 'px';
}
}
});

Ext.ux.grid.LockingColumnModel = Ext.extend(Ext.grid.ColumnModel, {
/**
* Returns true if the given column index is currently locked
* @param {Number} colIndex The column index
* @return {Boolean} True if the column is locked
*/
isLocked : function(colIndex){
return this.config[colIndex].locked === true;
},

/**
* Locks or unlocks a given column
* @param {Number} colIndex The column index
* @param {Boolean} value True to lock, false to unlock
* @param {Boolean} suppressEvent Pass false to cause the columnlockchange event not to fire
*/
setLocked : function(colIndex, value, suppressEvent){
if (this.isLocked(colIndex) == value) {
return;
}
this.config[colIndex].locked = value;
if (!suppressEvent) {
this.fireEvent('columnlockchange', this, colIndex, value);
}
},

/**
* Returns the total width of all locked columns
* @return {Number} The width of all locked columns
*/
getTotalLockedWidth : function(){
var totalWidth = 0;
for (var i = 0, len = this.config.length; i < len; i++) {
if (this.isLocked(i) && !this.isHidden(i)) {
totalWidth += this.getColumnWidth(i);
}
}

return totalWidth;
},

/**
* Returns the total number of locked columns
* @return {Number} The number of locked columns
*/
getLockedCount : function() {
var len = this.config.length;

for (var i = 0; i < len; i++) {
if (!this.isLocked(i)) {
return i;
}
}

//if we get to this point all of the columns are locked so we return the total
return len;
},

/**
* Moves a column from one position to another
* @param {Number} oldIndex The current column index
* @param {Number} newIndex The destination column index
*/
moveColumn : function(oldIndex, newIndex){
var oldLocked = this.isLocked(oldIndex),
newLocked = this.isLocked(newIndex);

if (oldIndex < newIndex && oldLocked && !newLocked) {
this.setLocked(oldIndex, false, true);
} else if (oldIndex > newIndex && !oldLocked && newLocked) {
this.setLocked(oldIndex, true, true);
}

Ext.ux.grid.LockingColumnModel.superclass.moveColumn.apply(this, arguments);
}
});