1. 引言
由于项目需要，需要在不同页面上选择全勾选能全部勾选所有的记录，反勾选也如此。这个需求可以解决了一个样例：如果有150条记录，当前页就10条，你又在每一个页面勾选部分的记录，然后，如果你要全部全选，需要在每一个页面上勾上全选checkbox，全部反选也有这个问题。
2.修改的代码
基于jQuery Bootgrid v1.3.1这个版本。
bootgrid.js修改的部分如下：
//原有的select和deselect方法
/**
* Selects rows by ids. Selects all visible rows if no ids are provided.
* In server-side scenarios only visible rows are selectable.
*
* @method select
* @param [rowsIds] {Array} An array of rows ids to select
* @chainable
**/
Grid.prototype.select = function(rowIds)
{
if (this.selection)
{
rowIds = rowIds || this.currentRows.propValues(this.identifier);
var id, i,
selectedRows = [];
while (rowIds.length > 0 && !(!this.options.multiSelect && selectedRows.length === 1))
{
id = rowIds.pop();
if ($.inArray(id, this.selectedRows) === -1)
{
for (i = 0; i < this.currentRows.length; i++)
{
if (this.currentRows[i][this.identifier] === id)
{
selectedRows.push(this.currentRows[i]);
this.selectedRows.push(id);
break;
}
}
}
}
if (selectedRows.length > 0)
{
var selectBoxSelector = getCssSelector(this.options.css.selectBox),
selectMultiSelectBox = this.selectedRows.length >= this.currentRows.length;
i = 0;
while (!this.options.keepSelection && selectMultiSelectBox && i < this.currentRows.length)
{
selectMultiSelectBox = ($.inArray(this.currentRows[i++][this.identifier], this.selectedRows) !== -1);
}
this.element.find("thead " + selectBoxSelector).prop("checked", selectMultiSelectBox);
if (!this.options.multiSelect)
{
//this.element.find("tbody > tr " + selectBoxSelector + ":checked")
// .trigger("click" + namespace);
var lastId = this.selectedRows[this.selectedRows.length-1];
var checkboxes = this.element.find("tbody > tr " + selectBoxSelector + ":checked");
for (i = 0; i < checkboxes.length; i++) {
var $checkbox = $(checkboxes[i]);
if (lastId != $checkbox.val()) {
$checkbox.trigger("click" + namespace);
}
}
}
for (i = 0; i < this.selectedRows.length; i++)
{
this.element.find("tbody > tr[data-row-id="" + this.selectedRows[i] + ""]")
.addClass(this.options.css.selected)._bgAria("selected", "true")
.find(selectBoxSelector).prop("checked", true);
}
this.element.trigger("selected" + namespace, [selectedRows]);
}
}
return this;
};
/**
* Deselects rows by ids. Deselects all visible rows if no ids are provided.
* In server-side scenarios only visible rows are deselectable.
*
* @method deselect
* @param [rowsIds] {Array} An array of rows ids to deselect
* @chainable
**/
Grid.prototype.deselect = function(rowIds)
{
if (this.selection)
{
rowIds = rowIds || this.currentRows.propValues(this.identifier);
var id, i, pos,
deselectedRows = [];
while (rowIds.length > 0)
{
id = rowIds.pop();
pos = $.inArray(id, this.selectedRows);
if (pos !== -1)
{
for (i = 0; i < this.currentRows.length; i++)
{
if (this.currentRows[i][this.identifier] === id)
{
deselectedRows.push(this.currentRows[i]);
this.selectedRows.splice(pos, 1);
break;
}
}
}
}
if (deselectedRows.length > 0)
{
var selectBoxSelector = getCssSelector(this.options.css.selectBox);
this.element.find("thead " + selectBoxSelector).prop("checked", false);
for (i = 0; i < deselectedRows.length; i++)
{
this.element.find("tbody > tr[data-row-id="" + deselectedRows[i][this.identifier] + ""]")
.removeClass(this.options.css.selected)._bgAria("selected", "false")
.find(selectBoxSelector).prop("checked", false);
}
this.element.trigger("deselected" + namespace, [deselectedRows]);
}
}
return this;
};
//修改后的select和deselect方法
/**
* Selects rows by ids. Selects all visible rows if no ids are provided.
* In server-side scenarios only visible rows are selectable.
*
* @method select
* @param [rowsIds] {Array} An array of rows ids to select
* @chainable
**/
Grid.prototype.select = function(rowIds,flag)
{
var selectAllFlag = false;
var selectBoxSelector = getCssSelector(this.options.css.selectBox);
if (this.selection)
{
//rowIds = rowIds || this.currentRows.propValues(this.identifier);
var id, i,
selectedRows = [];
if(typeof rowIds == 'undefined'){//select All
selectAllFlag = true;
this.element.find("thead " + selectBoxSelector).prop("indeterminate", false).prop("checked", true).val('all');
//selectedRows = this.currentRows;
var this_currentRows = this.currentRows;
this.selectedRows = Object.keys(this_currentRows).map(function(i){return this_currentRows[i].Id});
}else if(typeof flag != 'undefined' && flag == 'load'){//load selected rowIds
selectedRows = Object.keys(rowIds).map(function(i){return rowIds[i]});
this.selectedRows = Object.keys(rowIds).map(function(i){return rowIds[i]});
}else{
while (rowIds.length > 0 && !(!this.options.multiSelect && selectedRows.length === 1))
{
id = rowIds.pop();
if ($.inArray(id, this.selectedRows) === -1)
{
for (i = 0; i < this.currentRows.length; i++)
{
if (this.currentRows[i][this.identifier] === id)
{
selectedRows.push(this.currentRows[i]);
this.selectedRows.push(id);
break;
}
}
}
}
}
if (selectedRows.length > 0 || selectAllFlag)
{
//var selectBoxSelector = getCssSelector(this.options.css.selectBox),
/* var selectMultiSelectBox = this.selectedRows.length >= this.currentRows.length;
i = 0;
while (!this.options.keepSelection && selectMultiSelectBox && i < this.currentRows.length)
{
selectMultiSelectBox = ($.inArray(this.currentRows[i++][this.identifier], this.selectedRows) !== -1);
}*/
//this.element.find("thead " + selectBoxSelector).prop("checked", selectMultiSelectBox);
//PR1098 by fanbi
if(!selectAllFlag){
if(this.getTotalRowCount()== this.selectedRows.length){
this.element.find("thead " + selectBoxSelector).prop("indeterminate", false).prop("checked", true).val("all");
}else{
this.element.find("thead " + selectBoxSelector).prop("indeterminate", true).val("part");
}
}
if (!this.options.multiSelect)
{
//this.element.find("tbody > tr " + selectBoxSelector + ":checked")
// .trigger("click" + namespace);
var lastId = this.selectedRows[this.selectedRows.length-1];
var checkboxes = this.element.find("tbody > tr " + selectBoxSelector + ":checked");
for (i = 0; i < checkboxes.length; i++) {
var $checkbox = $(checkboxes[i]);
if (lastId != $checkbox.val()) {
$checkbox.trigger("click" + namespace);
}
}
}
for (i = 0; i < this.selectedRows.length; i++)
{
this.element.find("tbody > tr[data-row-id="" + this.selectedRows[i] + ""]")
.addClass(this.options.css.selected)._bgAria("selected", "true")
.find(selectBoxSelector).prop("checked", true);
}
this.element.trigger("selected" + namespace, [selectedRows]);
}
}
return this;
};
/**
* Deselects rows by ids. Deselects all visible rows if no ids are provided.
* In server-side scenarios only visible rows are deselectable.
*
* @method deselect
* @param [rowsIds] {Array} An array of rows ids to deselect
* @chainable
**/
Grid.prototype.deselect = function(rowIds)
{
var deSelectAllFlag = false;
var selectBoxSelector = getCssSelector(this.options.css.selectBox);
if (this.selection)
{
//rowIds = rowIds || this.currentRows.propValues(this.identifier);
var id, i, pos,
deselectedRows = [];
if(typeof rowIds == 'undefined'){//Deselect All
deSelectAllFlag = true;
this.element.find("thead " + selectBoxSelector).prop("indeterminate", false).prop("checked", false).val('none');
this.selectedRows= [];
deselectedRows = this.currentRows;
}else{//single deSelect
while (rowIds.length > 0)
{
id = rowIds.pop();
pos = $.inArray(id, this.selectedRows);
if (pos !== -1)
{
for (i = 0; i < this.currentRows.length; i++)
{
if (this.currentRows[i][this.identifier] === id)
{
deselectedRows.push(this.currentRows[i]);
this.selectedRows.splice(pos, 1);
break;
}
}
}
}
}
if (deselectedRows.length > 0 ||deSelectAllFlag == true)
{
//var selectBoxSelector = getCssSelector(this.options.css.selectBox);
//PR1098 by fanbi
if(!deSelectAllFlag){
if(0 != this.selectedRows.length){
this.element.find("thead " + selectBoxSelector).prop("indeterminate", true).val("part");
}else{
this.selectedRows = [];
this.element.find("thead " + selectBoxSelector).prop("indeterminate", false).prop("checked", false).val("none");;
}
}
//this.element.find("thead " + selectBoxSelector).prop("checked", false);
for (i = 0; i < deselectedRows.length; i++)
{
this.element.find("tbody > tr[data-row-id="" + deselectedRows[i][this.identifier] + ""]")
.removeClass(this.options.css.selected)._bgAria("selected", "false")
.find(selectBoxSelector).prop("checked", false);
}
this.element.trigger("deselected" + namespace, [deselectedRows]);
}
}
return this;
};
//原renderTableHeader方法里的变量赋值.
//在这个版本，不管全勾选或者反勾选，勾选中的html代码都是 value ="all",就像是一个bug，这个value值没有什么作用
var selectBox = (this.options.multiSelect) ?
tpl.select.resolve(getParams.call(that, { type: "checkbox", value: "all" })) : "";
//修改成默认是part
var selectBox = (this.options.multiSelect) ?
tpl.select.resolve(getParams.call(that, { type: "checkbox", value: "part" })) : "";
html里的修改如下：
var checkBoxVal = "none;//增加变量来保存当前是全选，部分选还是全不全状态
checkBoxVal =$('#yourGridId .select-box').val();
ajax{
data:{
checkBoxVal :checkBoxVal
}
}
//从后台的数据返回的值赋值给checkBoxs，存储数据可以用文件，数据库或者Localstorage来储存，按需来处理
$("#yourGridId ").bootgrid("select", checkBoxs, "load");
java代码
String checkBoxVal = request.getParameter("checkBoxVal ");
if("all".equalsIgnoreCase(checkBoxVal )){
checkBox = Utils.getAllXXXIds();
//something to do
}else if("none".equalsIgnoreCase(checkBoxVal )){
checkBox = "";
//something to do
}
3. 使用修正后的版本的结果
部分选中的图标如下：
3.1 不管在那一页全选，当前页都会选上，而且当你切换到其它记录页时，checkbox也是全选的，表头的checkbox都是打钩√
3.2 不管在那一页全反选，当前页都会去掉√，而且当你切换到其它记录页时，checkbox也是全没选中的，表头的checkbox都是没选中状态
3.3 不管在哪一页部分选，而且当你切换到其它记录页时，表头的checkbox都是显示部分选的，不同浏览器差异如上图。