jquery-easyui-datagridview datagrid-detailview.js升级自定义展开按钮功能

jquery-easyui的扩展组件jquery-easyui-datagridview，其中的datagrid-detailview.js可方便地生成子网格，但是每行均默认生成展开按钮，实际我们希望对某些行不显示展开按钮，网上很多人提供的解决方案就是通过dom操作将生成的展开按钮删除掉，但是这个展开按钮是动态生成的，通过dom不好查找。我将 datagrid-detailview.js文件进行了升级修改，支持用户通过表格列定义以及数据值来动态生成展开按钮，非常方便。
共享给大家。

subgrid默认展开按钮，每行均显示：

使用修改后的组件，展开图标可设定列位置，可根据行数据值自动显示和隐藏。

使用方法：

列定义：

columns:[[
                {field:'exp',title:'展开',width:25,expander:true},
                  ...
                ]],

行数据赋值：exp:true 或者 exp:false

完整代码：

下载地址：https://download.csdn.net/download/benxuu/11080025

//修改说明：支持用户通过数据自定义网格行显示展开图标。
//配置方法：定义展开图标列，添加属性expender:true；配置此项则不再默认生成左侧的展开按钮！而是在用户定义的列显示
//行记录对应展开图标列数据值为true时，显示图标，为false时，不显示。
//欢迎继续修改，或反馈给我
//Updated by Ben
//2019.4.1 [email protected]

$.extend($.fn.datagrid.defaults, {
	autoUpdateDetail: true  // Define if update the row detail content when update a row
});

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('');
		for(var i=0; i');
			table.push(this.renderRow.call(this, target, fields, frozen, i, rows[i]));
			table.push('');
			
			table.push('');
			if (frozen){
				table.push('');
			table.push('');
			
		}
		table.push('
');
			} else {
				table.push('
');
			}

			table.push('
');
			if (frozen){
				table.push(' ');
			} else {
				table.push(opts.detailFormatter.call(target, i, rows[i]));
			}
			table.push('
');

			table.push('
');
		
		$(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('
'+rownumber+'
');
		}
		for(var i=0; i');
				
				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('
');
				
				if (col.checkbox){
					cc.push('');
				} else if (col.expander) {
					//edit by Ben，根据列配置项expender为true，值以及value来决定展开按钮的呈现
					if(value) {
					cc.push('');	
					}else{
					cc.push('');	
					}
					//cc.push('
');
					//cc.push('
');
				} else if (col.formatter){
					cc.push(col.formatter(value, rowData, rowIndex));
				} else {
					cc.push(value);
				}
				
				cc.push('
');
				cc.push('');
			}
		}
		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 tr = opts.finder.getTr(target, index, 'body', frozen?1:2);
			if (isAppend){
				var detail = tr.next();
				var newDetail = tr.next().clone();
				tr.insertAfter(detail);
			} 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 (opts.autoUpdateDetail && 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');

		if (state.ss.bindDetailEvents){return;}
		state.ss.bindDetailEvents = true;

		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.detailview').bind('click.detailview', function(e){
			var tt = $(e.target);
			var tr = tt.closest('tr.datagrid-row');
			if (!tr.length){return}
			if (tt.hasClass('datagrid-row-expander')){
				var rowIndex = parseInt(tr.attr('datagrid-row-index'));
				if (tt.hasClass('datagrid-row-expand')){
					$(target).datagrid('expandRow', rowIndex);
				} else {
					$(target).datagrid('collapseRow', rowIndex);
				}
				$(target).datagrid('fixRowHeight');
				e.stopPropagation();
				
			} else {
				// clickHandler(e);
			}
		});
	},
	
	onBeforeRender: function(target){
		var state = $.data(target, 'datagrid');
		var opts = state.options;
		var dc = state.dc;
		var t = $(target);
		var hasExpander = false;
		var fields = t.datagrid('getColumnFields',true).concat(t.datagrid('getColumnFields'));
		for(var i=0; i
');
			if ($('tr',t).length == 0){
				td.wrap('').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'));
			}
		}

		// if (!state.bindDetailEvents){
		// 	state.bindDetailEvents = true;
		// 	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;
			opts.onResizeColumn = function(field, width){
				if (!opts.fitColumns){
					resizeDetails();				
				}
				var rowCount = $(target).datagrid('getRows').length;
				for(var i=0; itable.datagrid-btable>tbody>tr>td>div.datagrid-row-detail:visible');
		// 	if (details.length){
		// 		var ww = 0;
		// 		dc.header2.find('.datagrid-header-check:visible,.datagrid-cell:visible').each(function(){
		// 			ww += $(this).outerWidth(true) + 1;
		// 		});
		// 		if (ww != details.outerWidth(true)){
		// 			details._outerWidth(ww);
		// 			details.find('.easyui-fluid').trigger('_resize');
		// 		}
		// 	}
		// }
		function resizeDetails(){
			var details = dc.body2.find('>table.datagrid-btable>tbody>tr>td>div.datagrid-row-detail:visible');
			if (details.length){
				var ww = 0;
				// dc.header2.find('.datagrid-header-check:visible,.datagrid-cell:visible').each(function(){
				// 	ww += $(this).outerWidth(true) + 1;
				// });
				dc.body2.find('>table.datagrid-btable>tbody>tr:visible:first').find('.datagrid-cell-check:visible,.datagrid-cell:visible').each(function(){
					ww += $(this).outerWidth(true) + 1;
				});
				if (ww != details.outerWidth(true)){
					details._outerWidth(ww);
					details.find('.easyui-fluid').trigger('_resize');
				}
			}
		}
		
		
		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.datagrid-row-expander').css('visibility', 'hidden');
		$(target).datagrid('resize');

		this.bindEvents(target);
		var detail = dc.body1.add(dc.body2).find('div.datagrid-row-detail');
		detail.unbind().bind('mouseover mouseout click dblclick contextmenu scroll', function(e){
			e.stopPropagation();
		});
	}
});

$.extend($.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
			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.datagrid-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');
		return tr.next().find('>td>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('datagrid-row-expand')){
				expander.removeClass('datagrid-row-expand').addClass('datagrid-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('datagrid-row-collapse')){
				expander.removeClass('datagrid-row-collapse').addClass('datagrid-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);
				}
			}
		});
	}
});

$.extend($.fn.datagrid.methods, {
	subgrid: function(jq, conf){
		return jq.each(function(){
			createGrid(this, conf);

			function createGrid(target, conf, prow){
				var queryParams = $.extend({}, conf.options.queryParams||{});
				// queryParams[conf.options.foreignField] = prow ? prow[conf.options.foreignField] : undefined;
				if (prow){
					var fk = conf.options.foreignField;
					if ($.isFunction(fk)){
						$.extend(queryParams, fk.call(conf, prow));
					} else {
						queryParams[fk] = prow[fk];
					}
				}

				var plugin = conf.options.edatagrid ? 'edatagrid' : 'datagrid';

				$(target)[plugin]($.extend({}, conf.options, {
					subgrid: conf.subgrid,
					view: (conf.subgrid ? detailview : undefined),
					queryParams: queryParams,
					detailFormatter: function(index, row){
						return '
';
					},
					onExpandRow: function(index, row){
						var opts = $(this).datagrid('options');
						var rd = $(this).datagrid('getRowDetail', index);
						var dg = getSubGrid(rd);
						if (!dg.data('datagrid')){
							createGrid(dg[0], opts.subgrid, row);
						}
						rd.find('.easyui-fluid').trigger('_resize');
						setHeight(this, index);
						if (conf.options.onExpandRow){
							conf.options.onExpandRow.call(this, index, row);
						}
					},
					onCollapseRow: function(index, row){
						setHeight(this, index);
						if (conf.options.onCollapseRow){
							conf.options.onCollapseRow.call(this, index, row);
						}
					},
					onResize: function(){
						var dg = $(this).children('div.datagrid-view').children('table')
						setParentHeight(this);
					},
					onResizeColumn: function(field, width){
						setParentHeight(this);
						if (conf.options.onResizeColumn){
							conf.options.onResizeColumn.call(this, field, width);
						}
					},
					onLoadSuccess: function(data){
						setParentHeight(this);
						if (conf.options.onLoadSuccess){
							conf.options.onLoadSuccess.call(this, data);
						}
					}
				}));
			}
			function getSubGrid(rowDetail){
				var div = $(rowDetail).children('div');
				if (div.children('div.datagrid').length){
					return div.find('>div.datagrid>div.panel-body>div.datagrid-view>table.datagrid-subgrid');
				} else {
					return div.find('>table.datagrid-subgrid');
				}
			}
			function setParentHeight(target){
				var tr = $(target).closest('div.datagrid-row-detail').closest('tr').prev();
				if (tr.length){
					var index = parseInt(tr.attr('datagrid-row-index'));
					var dg = tr.closest('div.datagrid-view').children('table');
					setHeight(dg[0], index);
				}
			}
			function setHeight(target, index){
				$(target).datagrid('fixDetailRowHeight', index);
				$(target).datagrid('fixRowHeight', index);
				var tr = $(target).closest('div.datagrid-row-detail').closest('tr').prev();
				if (tr.length){
					var index = parseInt(tr.attr('datagrid-row-index'));
					var dg = tr.closest('div.datagrid-view').children('table');
					setHeight(dg[0], index);
				}
			}
		});
	},
	getSelfGrid: function(jq){
		var grid = jq.closest('.datagrid');
		if (grid.length){
			return grid.find('>.datagrid-wrap>.datagrid-view>.datagrid-f');
		} else {
			return null;
		}
	},
	getParentGrid: function(jq){
		var detail = jq.closest('div.datagrid-row-detail');
		if (detail.length){
			return detail.closest('.datagrid-view').children('.datagrid-f');
		} else {
			return null;
		}
	},
	getParentRowIndex: function(jq){
		var detail = jq.closest('div.datagrid-row-detail');
		if (detail.length){
			var tr = detail.closest('tr').prev();
			return parseInt(tr.attr('datagrid-row-index'));
		} else {
			return -1;
		}
	}
});

下载地址：https://download.csdn.net/download/benxuu/11080025