红色部分为修改部分，设定显示部分高度 忽略JQuery的兼容问题
var detailview = $.extend({}, $.fn.datagrid.defaults.view, {
render: function(target, container, frozen){
var state = $.data(target, 'datagrid');
var opts = state.options;
if (frozen){
if (!(opts.rownumbers || (opts.frozenColumns && opts.frozenColumns.length))){
return;
}
}
var rows = state.data.rows;
var fields = $(target).datagrid('getColumnFields', frozen);
var table = [];
table.push('<table class="datagrid-btable" cellspacing="0" cellpadding="0" border="0"><tbody>');
for(var i=0; i<rows.length; i++) {
// get the class and style attributes for this row
var css = opts.rowStyler ? opts.rowStyler.call(target, i, rows[i]) : '';
var classValue = '';
var styleValue = '';
if (typeof css == 'string'){
styleValue = css;
} else if (css){
classValue = css['class'] || '';
styleValue = css['style'] || '';
}
var cls = 'class="datagrid-row ' + (i % 2 && opts.striped ? 'datagrid-row-alt ' : ' ') + classValue + '"';
var style = styleValue ? 'style="' + styleValue + '"' : '';
var rowId = state.rowIdPrefix + '-' + (frozen?1:2) + '-' + i;
table.push('<tr id="' + rowId + '" datagrid-row-index="' + i + '" ' + cls + ' ' + style + '>');
table.push(this.renderRow.call(this, target, fields, frozen, i, rows[i]));
table.push('</tr>');
table.push('<tr style="display:none;">');
if (frozen){
table.push('<td colspan=' + (fields.length+2) + ' style="border-right:0">');
} else {
table.push('<td colspan=' + (fields.length) + '>');
}
table.push('<div class="datagrid-row-detail">');
if (frozen){
table.push(' ');
} else {
table.push(opts.detailFormatter.call(target, i, rows[i]));
}
table.push('</div>');
table.push('</td>');
table.push('</tr>');
}
table.push('</tbody></table>');
$(container).html(table.join(''));
},
renderRow: function(target, fields, frozen, rowIndex, rowData){
var opts = $.data(target, 'datagrid').options;
var cc = [];
if (frozen && opts.rownumbers){
var rownumber = rowIndex + 1;
if (opts.pagination){
rownumber += (opts.pageNumber-1)*opts.pageSize;
}
cc.push('<td class="datagrid-td-rownumber"><div class="datagrid-cell-rownumber">'+rownumber+'</div></td>');
}
for(var i=0; i<fields.length; i++){
var field = fields[i];
var col = $(target).datagrid('getColumnOption', field);
if (col){
var value = rowData[field]; // the field value
var css = col.styler ? (col.styler(value, rowData, rowIndex)||'') : '';
var classValue = '';
var styleValue = '';
if (typeof css == 'string'){
styleValue = css;
} else if (cc){
classValue = css['class'] || '';
styleValue = css['k'] || '';
}
var cls = classValue ? 'class="' + classValue + '"' : '';
var style = col.hidden ? 'style="display:none;' + styleValue + '"' : (styleValue ? 'style="' + styleValue + '"' : '');
cc.push('<td field="' + field + '" ' + cls + ' ' + style + '>');
if (col.checkbox){
style = '';
} else if (col.expander){
style = "text-align:center;height:16px;";
} else {
style = styleValue;
if (col.align){style += ';text-align:' + col.align + ';'}
if (!opts.nowrap){
style += ';white-space:normal;height:auto;';
} else if (opts.autoRowHeight){
style += ';height:auto;';
}
}
cc.push('<div style="' + style + '" ');
if (col.checkbox){
cc.push('class="datagrid-cell-check ');
} else {
cc.push('class="datagrid-cell ' + col.cellClass);
}
cc.push('">');
if (col.checkbox){
cc.push('<input type="checkbox" name="' + field + '" value="' + (value!=undefined ? value : '') + '">');
} else if (col.expander) {
//cc.push('<div style="text-align:center;width:16px;height:16px;">');
cc.push('<span class="my-row-expander my-row-expand" style="display:inline-block;width:92px;height:16px;cursor:pointer;color: #36c;">查看特有要素</span>');
//cc.push('</div>');
} else if (col.formatter){
cc.push(col.formatter(value, rowData, rowIndex));
} else {
cc.push(value);
}
cc.push('</div>');
cc.push('</td>');
}
}
return cc.join('');
},
insertRow: function(target, index, row){
var opts = $.data(target, 'datagrid').options;
var dc = $.data(target, 'datagrid').dc;
var panel = $(target).datagrid('getPanel');
var view1 = dc.view1;
var view2 = dc.view2;
var isAppend = false;
var rowLength = $(target).datagrid('getRows').length;
if (rowLength == 0){
$(target).datagrid('loadData',{total:1,rows:[row]});
return;
}
if (index == undefined || index == null || index >= rowLength) {
index = rowLength;
isAppend = true;
this.canUpdateDetail = false;
}
$.fn.datagrid.defaults.view.insertRow.call(this, target, index, row);
_insert(true);
_insert(false);
this.canUpdateDetail = true;
function _insert(frozen){
var v = frozen ? view1 : view2;
var tr = v.find('tr[datagrid-row-index='+index+']');
if (isAppend){
var newDetail = tr.next().clone();
tr.insertAfter(tr.next());
} else {
var newDetail = tr.next().next().clone();
}
newDetail.insertAfter(tr);
newDetail.hide();
if (!frozen){
newDetail.find('div.datagrid-row-detail').html(opts.detailFormatter.call(target, index, row));
}
}
},
deleteRow: function(target, index){
var opts = $.data(target, 'datagrid').options;
var dc = $.data(target, 'datagrid').dc;
var tr = opts.finder.getTr(target, index);
tr.next().remove();
$.fn.datagrid.defaults.view.deleteRow.call(this, target, index);
dc.body2.triggerHandler('scroll');
},
updateRow: function(target, rowIndex, row){
var dc = $.data(target, 'datagrid').dc;
var opts = $.data(target, 'datagrid').options;
var cls = $(target).datagrid('getExpander', rowIndex).attr('class');
$.fn.datagrid.defaults.view.updateRow.call(this, target, rowIndex, row);
$(target).datagrid('getExpander', rowIndex).attr('class',cls);
// update the detail content
if (this.canUpdateDetail){
var row = $(target).datagrid('getRows')[rowIndex];
var detail = $(target).datagrid('getRowDetail', rowIndex);
detail.html(opts.detailFormatter.call(target, rowIndex, row));
}
},
bindEvents: function(target){
var state = $.data(target, 'datagrid');
var dc = state.dc;
var opts = state.options;
var body = dc.body1.add(dc.body2);
var clickHandler = ($.data(body[0],'events')||$._data(body[0],'events')).click[0].handler;
body.unbind('click').bind('click', function(e){
var tt = $(e.target);
var tr = tt.closest('tr.datagrid-row');
if (!tr.length){return}
if (tt.hasClass('my-row-expander')){
var rowIndex = parseInt(tr.attr('datagrid-row-index'));
if (tt.hasClass('my-row-expand')){
$(target).datagrid('expandRow', rowIndex);
} else {
$(target).datagrid('collapseRow', rowIndex);
}
$(target).datagrid('fixRowHeight');
} else {
clickHandler(e);
}
e.stopPropagation();
});
},
onBeforeRender: function(target){
var state = $.data(target, 'datagrid');
var opts = state.options;
var dc = state.dc;
var t = $(target);
var hasExpander = false;
var fields = t.datagrid('getColumnFields',true).concat(t.datagrid('getColumnFields'));
for(var i=0; i<fields.length; i++){
var col = t.datagrid('getColumnOption', fields[i]);
if (col.expander){
hasExpander = true;
break;
}
}
if (!hasExpander){
if (opts.frozenColumns && opts.frozenColumns.length){
opts.frozenColumns[0].splice(0,0,{field:'_expander',expander:true,width:24,resizable:false,fixed:true});
} else {
opts.frozenColumns = [[{field:'_expander',expander:true,width:24,resizable:false,fixed:true}]];
}
var t = dc.view1.children('div.datagrid-header').find('table');
var td = $('<td rowspan="'+opts.frozenColumns.length+'"><div class="datagrid-header-expander" style="width:100px;"></div></td>');
if ($('tr',t).length == 0){
td.wrap('<tr></tr>').parent().appendTo($('tbody',t));
} else if (opts.rownumbers){
td.insertAfter(t.find('td:has(div.datagrid-header-rownumber)'));
} else {
td.prependTo(t.find('tr:first'));
}
}
var that = this;
setTimeout(function(){
that.bindEvents(target);
},0);
},
onAfterRender: function(target){
var that = this;
var state = $.data(target, 'datagrid');
var dc = state.dc;
var opts = state.options;
var panel = $(target).datagrid('getPanel');
$.fn.datagrid.defaults.view.onAfterRender.call(this, target);
if (!state.onResizeColumn){
state.onResizeColumn = opts.onResizeColumn;
}
if (!state.onResize){
state.onResize = opts.onResize;
}
function setBodyTableWidth(){
var columnWidths = dc.view2.children('div.datagrid-header').find('table').width();
dc.body2.children('table').width(columnWidths);
}
opts.onResizeColumn = function(field, width){
setBodyTableWidth();
var rowCount = $(target).datagrid('getRows').length;
for(var i=0; i<rowCount; i++){
$(target).datagrid('fixDetailRowHeight', i);
}
// call the old event code
state.onResizeColumn.call(target, field, width);
};
opts.onResize = function(width, height){
setBodyTableWidth();
state.onResize.call(panel, width, height);
};
this.canUpdateDetail = true; // define if to update the detail content when 'updateRow' method is called;
var footer = dc.footer1.add(dc.footer2);
footer.find('span.my-row-expander').css('visibility', 'hidden');
$(target).datagrid('resize');
}
});
$.extend($.fn.datagrid.methods, {
fixDetailRowHeight: function(jq, index){
return jq.each(function(){
var opts = $.data(this, 'datagrid').options;
if (!(opts.rownumbers || (opts.frozenColumns && opts.frozenColumns.length))){
return;
}
var dc = $.data(this, 'datagrid').dc;
var tr1 = opts.finder.getTr(this, index, 'body', 1).next();
var tr2 = opts.finder.getTr(this, index, 'body', 2).next();
// fix the detail row height
tr1.css('height', tr2.height());
if (tr2.is(':visible')){
tr1.css('height', '');
tr2.css('height', '');
var height = Math.max(tr1.height(), tr2.height());
tr1.css('height', height);
tr2.css('height', height);
}
dc.body2.triggerHandler('scroll');
});
},
getExpander: function(jq, index){ // get row expander object
var opts = $.data(jq[0], 'datagrid').options;
return opts.finder.getTr(jq[0], index).find('span.my-row-expander');
},
// get row detail container
getRowDetail: function(jq, index){
var opts = $.data(jq[0], 'datagrid').options;
var tr = opts.finder.getTr(jq[0], index, 'body', 2);
return tr.next().find('div.datagrid-row-detail');
},
expandRow: function(jq, index){
return jq.each(function(){
var opts = $(this).datagrid('options');
var dc = $.data(this, 'datagrid').dc;
var expander = $(this).datagrid('getExpander', index);
if (expander.hasClass('my-row-expand')){
expander.removeClass('my-row-expand').addClass('my-row-collapse');
var tr1 = opts.finder.getTr(this, index, 'body', 1).next();
var tr2 = opts.finder.getTr(this, index, 'body', 2).next();
tr1.show();
tr2.show();
$(this).datagrid('fixDetailRowHeight', index);
if (opts.onExpandRow){
var row = $(this).datagrid('getRows')[index];
opts.onExpandRow.call(this, index, row);
}
}
});
},
collapseRow: function(jq, index){
return jq.each(function(){
var opts = $(this).datagrid('options');
var dc = $.data(this, 'datagrid').dc;
var expander = $(this).datagrid('getExpander', index);
if (expander.hasClass('my-row-collapse')){
expander.removeClass('my-row-collapse').addClass('my-row-expand');
var tr1 = opts.finder.getTr(this, index, 'body', 1).next();
var tr2 = opts.finder.getTr(this, index, 'body', 2).next();
tr1.hide();
tr2.hide();
dc.body2.triggerHandler('scroll');
if (opts.onCollapseRow){
var row = $(this).datagrid('getRows')[index];
opts.onCollapseRow.call(this, index, row);
}
}
});
}
});
来源：oschina
链接：https://my.oschina.net/u/1016295/blog/520254