扩展-Easyui Datagrid相同连续列合并扩展（一）

一.autoMergeCellAndCells实现效果

调用方法：

function onLoadSuccess(data){

    $(this).datagrid("autoMergeCellAndCells",['productid','productname']);

}

 

//所有列进行合并操作
//$(this).datagrid("autoMergeCellAndCells");
//指定列进行合并操作
//$(this).datagrid("autoMergeCellAndCells", ['productid','productname']);
$(this).datagrid("autoMergeCellAndCells",['productid','productname']);

二.autoMergeCells实现效果

调用方法：

function onLoadSuccess(data){
         $(this).datagrid("autoMergeCells",['productid','productname']);
 }

//所有列进行合并操作
//$(this).datagrid("autoMergeCells");
//指定列进行合并操作
//$(this).datagrid("autoMergeCells", ['productid','productname']);
$(this).datagrid("autoMergeCells",['productid','productname']);

三.扩展

$.extend($.fn.datagrid.methods, {
autoMergeCells : function (jq, fields) {
return jq.each(function () {
var target = $(this);
if (!fields) {
fields = target.datagrid("getColumnFields");
}
var rows = target.datagrid("getRows");
var i = 0,
j = 0,
temp = {};

for (i; i < rows.length; i++) {
var row = rows[i];
j = 0;
for (j; j < fields.length; j++) {
var field = fields[j];
var tf = temp[field];
if (!tf) {
tf = temp[field] = {};
tf[row[field]] = [i];
} else {
var tfv = tf[row[field]];
if (tfv) {
tfv.push(i);
} else {
tfv = tf[row[field]] = [i];
}
}
}
}
$.each(temp, function (field, colunm) {
$.each(colunm, function () {
var group = this;

if (group.length > 1) {
var before,
after,
megerIndex = group[0];
for (var i = 0; i < group.length; i++) {
before = group[i];
after = group[i + 1];
if (after && (after - before) == 1) {
continue;
}
var rowspan = before - megerIndex + 1;
if (rowspan > 1) {
target.datagrid('mergeCells', {
index : megerIndex,
field : field,
rowspan : rowspan
});
}
if (after && (after - before) != 1) {
megerIndex = after;
}
}
}
});
});
});
},
autoMergeCellAndCells : function (jq, fields) {
return jq.each(function () {
var target = $(this);
if (!fields) {
fields = target.datagrid("getColumnFields");
}
var cfield = fields[0];
if (!cfield) {
return;
}
var rows = target.datagrid("getRows");
var i = 0,
j = 0,
temp = {};
for (i; i < rows.length; i++) {
var row = rows[i];
j = 0;
var tf = temp[cfield];
if (!tf) {
tf = temp[cfield] = {};
tf[row[cfield]] = [i];

} else {
var tfv = tf[row[cfield]];
if (tfv) {
tfv.push(i);
} else {
tfv = tf[row[cfield]] = [i];

}
}
}

$.each(temp, function (field, colunm) {
$.each(colunm, function () {
var group = this;

if (group.length > 1) {
var before,
after,
megerIndex = group[0];
for (var i = 0; i < group.length; i++) {
before = group[i];
after = group[i + 1];
if (after && (after - before) == 1) {
continue;
}
var rowspan = before - megerIndex + 1;
if (rowspan > 1) {
for(var j=0;j<fields.length;j++){
target.datagrid('mergeCells', {
index : megerIndex,
field : fields[j],
rowspan : rowspan
});
}
}
if (after && (after - before) != 1) {
megerIndex = after;
}
}
}
});
});
});
}

});