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GridView.js
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/*
Date:03-18-2009
Aurthor:Prabin Shrestha
email:[email protected]
*/
//created a Framework Object
var JUI={};
JUI.Component = function(){};
/*--------------------------------------------------------------------*/
/*-----------------------------Gridview-------------------------------*/
JUI.Component.GridView= function(containerId){
this.containerId = containerId;
this.header = new JUI.Component.GridView.Helper.HeaderRow();
this.data = new JUI.Component.GridView.Helper.Rows(this);
this.index= this.instances.length;
this.instances[this.index]=this;
return this;
};
JUI.Component.GridView.prototype = {
instances : [],
setStyle : function(client,styleClass){
client.className = styleClass;
},
render : function(){
if(this.header.row[0].sortSymbol==undefined)
this.header.initializeSortSymbol();
var text="<table id=\"jui_gridview\" class=\"jui_gridview\" cellspacing=\"0\" cellpadding=\"2px\" >";
text+="<tr class=\"header\">";
for(k=0;k<this.header.row.length;k++){
text+="<td width=\""+ this.header.row[k].Width + "\"";
text+=" onClick=\"JUI.Component.GridView.prototype.instances["+this.index+"].data.sortRows('"+this.header.row[k].Name+"')\"" + " >";
text+=this.header.row[k].Label;
text+=" <span class=\"updownsign\">"+ this.header.row[k].sortSymbol +"</span></td>";
}
text+="</tr>";
for(i=0; i<this.data.rows.length; i++){
var fetchRow= this.data.rows[i];
text+="<tr onMouseOver=\"JUI.Component.GridView.prototype.setStyle(this,'mouseover')\" onMouseOut=\"JUI.Component.GridView.prototype.setStyle(this,'')\">";
for(j=0; j<this.header.row.length; j++){
if(fetchRow[this.header.row[j].Name]==undefined || fetchRow[this.header.row[j].Name]==null ){
text+="<td> </td>";
}
else{
text+="<td>"+fetchRow[this.header.row[j].Name]+"</td>";
}
}
text+="</tr>";
}
text+="</table>";
document.getElementById(this.containerId).innerHTML = text;
}
};
JUI.Component.GridView.Helper={};
JUI.Component.GridView.Helper.Rows=function(parent){
this.rows =[];
this.parent=parent;
return this;
};
JUI.Component.GridView.Helper.Rows.prototype = {
addRow : function(rowobj){
this.rows.push(rowobj);
},
deleteRow : function(){
this.rows.pop();
},
sortRows : function(colName){
var changedCol = this.parent.header.changeSortSymbol(colName);
function sortfunction(a,b){
if(changedCol.sortSymbol=="")
{//ascending
if (a[colName] === b[colName]) {
return 0;
}
if (typeof a[colName] === typeof b[colName]) {
return a[colName] < b[colName] ? -1 : 1;
}
return typeof a[colName] < typeof b[colName] ? -1 : 1;
}
else if(changedCol.sortSymbol=="")
{//descending
if (a[colName] === b[colName]) {
return 0;
}
if (typeof a[colName] === typeof b[colName]) {
return a[colName] > b[colName] ? -1 : 1;
}
return typeof a[colName] > typeof b[colName] ? -1 : 1;
}
}
this.rows.sort(sortfunction);
//here this variable is gridview.data so to call render I used this.parent.render
this.parent.render();
}
};
JUI.Component.GridView.Helper.HeaderRow= function(){
this.row=[];
return this;
};
JUI.Component.GridView.Helper.HeaderRow.prototype={
addColumn : function(headerColumn){
this.row.push(headerColumn);
},
deleteColumn : function(){
this.row.pop();
},
initializeSortSymbol :function(){
for(i=0;i<this.row.length;i++){
this.row[i].sortSymbol="";
}
},
changeSortSymbol: function(colName){
var obj,temp;
for(i=0;i<this.row.length;i++){
obj = this.row[i];
if(colName==obj.Name){
if(obj.sortSymbol=="")
obj.sortSymbol="";//asc
else if(obj.sortSymbol=="")
obj.sortSymbol="";//desc
else
obj.sortSymbol="";
temp=obj;
}
else{
obj.sortSymbol="";
}
}
return temp;
}
};