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Prado.RicoLiveGrid = Class.create();
Prado.RicoLiveGrid.prototype = Object.extend(Rico.LiveGrid.prototype,
{
initialize : function(tableId, options)
{
this.options = {
tableClass: $(tableId).className || '',
loadingClass: $(tableId).className || '',
scrollerBorderRight: '1px solid #ababab',
bufferTimeout: 20000,
sortAscendImg: 'images/sort_asc.gif',
sortDescendImg: 'images/sort_desc.gif',
sortImageWidth: 9,
sortImageHeight: 5,
ajaxSortURLParms: [],
onRefreshComplete: null,
requestParameters: null,
inlineStyles: true,
visibleRows: 10,
totalRows: 0,
initialOffset: 0
};
Object.extend(this.options, options || {});
//this.ajaxOptions = {parameters: null};
//Object.extend(this.ajaxOptions, ajaxOptions || {});
this.tableId = tableId;
this.table = $(tableId);
this.addLiveGridHtml();
var columnCount = this.table.rows[0].cells.length;
this.metaData = new Rico.LiveGridMetaData(this.options.visibleRows, this.options.totalRows, columnCount, options);
this.buffer = new Rico.LiveGridBuffer(this.metaData);
var rowCount = this.table.rows.length;
this.viewPort = new Rico.GridViewPort(this.table,
this.table.offsetHeight/rowCount,
this.options.visibleRows,
this.buffer, this);
this.scroller = new Rico.LiveGridScroller(this,this.viewPort);
this.options.sortHandler = this.sortHandler.bind(this);
if ( $(tableId + '_header') )
this.sort = new Rico.LiveGridSort(tableId + '_header', this.options)
this.processingRequest = null;
this.unprocessedRequest = null;
//this.initAjax(url);
if (this.options.initialOffset >= 0)
{
var offset = this.options.initialOffset;
this.scroller.moveScroll(offset);
this.viewPort.scrollTo(this.scroller.rowToPixel(offset));
if (this.options.sortCol) {
this.sortCol = options.sortCol;
this.sortDir = options.sortDir;
}
var grid = this;
setTimeout(function(){
grid.requestContentRefresh(offset);
},100);
}
},
fetchBuffer: function(offset)
{
if ( this.buffer.isInRange(offset) &&
!this.buffer.isNearingLimit(offset)) {
return;
}
if (this.processingRequest) {
this.unprocessedRequest = new Rico.LiveGridRequest(offset);
return;
}
var bufferStartPos = this.buffer.getFetchOffset(offset);
this.processingRequest = new Rico.LiveGridRequest(offset);
this.processingRequest.bufferOffset = bufferStartPos;
var fetchSize = this.buffer.getFetchSize(offset);
var partialLoaded = false;
// var queryString
// if (this.options.requestParameters)
// queryString = this._createQueryString(this.options.requestParameters, 0);
var param =
{
'page_size' : fetchSize,
'offset' : bufferStartPos
};
if(this.sortCol)
{
Object.extend(param,
{
'sort_col': this.sortCol,
'sort_dir': this.sortDir
});
}
/*queryString = (queryString == null) ? '' : queryString+'&';
queryString = queryString+'id='+this.tableId+'&page_size='+fetchSize+'&offset='+bufferStartPos;
if (this.sortCol)
queryString = queryString+'&sort_col='+escape(this.sortCol)+'&sort_dir='+this.sortDir;
this.ajaxOptions.parameters = queryString;
ajaxEngine.sendRequest( this.tableId + '_request', this.ajaxOptions );
*/
Prado.Callback(this.tableId, param, this.ajaxUpdate.bind(this), this.options);
this.timeoutHandler = setTimeout( this.handleTimedOut.bind(this), this.options.bufferTimeout);
},
ajaxUpdate: function(result, output)
{
try {
clearTimeout( this.timeoutHandler );
this.buffer.update(result,this.processingRequest.bufferOffset);
this.viewPort.bufferChanged();
}
catch(err) {}
finally {this.processingRequest = null; }
this.processQueuedRequest();
}
});
Object.extend(Rico.LiveGridBuffer.prototype,
{
update: function(newRows, start)
{
if (this.rows.length == 0) { // initial load
this.rows = newRows;
this.size = this.rows.length;
this.startPos = start;
return;
}
if (start > this.startPos) { //appending
if (this.startPos + this.rows.length < start) {
this.rows = newRows;
this.startPos = start;//
} else {
this.rows = this.rows.concat( newRows.slice(0, newRows.length));
if (this.rows.length > this.maxBufferSize) {
var fullSize = this.rows.length;
this.rows = this.rows.slice(this.rows.length - this.maxBufferSize, this.rows.length)
this.startPos = this.startPos + (fullSize - this.rows.length);
}
}
} else { //prepending
if (start + newRows.length < this.startPos) {
this.rows = newRows;
} else {
this.rows = newRows.slice(0, this.startPos).concat(this.rows);
if (this.rows.length > this.maxBufferSize)
this.rows = this.rows.slice(0, this.maxBufferSize)
}
this.startPos = start;
}
this.size = this.rows.length;
}
});
Object.extend(Rico.GridViewPort.prototype,
{
populateRow: function(htmlRow, row)
{
if(isdef(htmlRow))
{
for (var j=0; j < row.length; j++) {
htmlRow.cells[j].innerHTML = row[j]
}
}
}
});
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