//
// TableRenderer.cpp
//
// $Id: //poco/Main/WebWidgets/ExtJS/src/TableRenderer.cpp#4 $
//
// Library: ExtJS
// Package: Core
// Module:  TableRenderer
//
// Copyright (c) 2007, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include "Poco/WebWidgets/ExtJS/TableRenderer.h"
#include "Poco/WebWidgets/ExtJS/FormRenderer.h"
#include "Poco/WebWidgets/ExtJS/Utility.h"
#include "Poco/WebWidgets/ExtJS/TableCellHandlerFactory.h"
#include "Poco/WebWidgets/ExtJS/ArrayTableSerializer.h"
#include "Poco/WebWidgets/Table.h"
#include "Poco/WebWidgets/WebApplication.h"
#include "Poco/WebWidgets/RequestHandler.h"
#include "Poco/WebWidgets/DateFormatter.h"
#include "Poco/WebWidgets/JSDelegate.h"
#include "Poco/Delegate.h"
#include <sstream>
#include <list>


namespace Poco {
namespace WebWidgets {
namespace ExtJS {


const std::string TableRenderer::EV_CELLCLICKED("cellclick");
const std::string TableRenderer::EV_ROWCLICKED("rowselect");
const std::string TableRenderer::EV_BEFORECELLCLICKED("cellmousedown");
const std::string TableRenderer::EV_BEFOREROWCLICKED("rowmousedown");
const std::string TableRenderer::EV_BEFORECELLVALUECHANGED("validateedit");
const std::string TableRenderer::EV_AFTEREDIT("afteredit");
const std::string TableRenderer::EV_AFTERLOAD("load");
const std::string TableRenderer::EV_RENDER("render");
const std::string TableRenderer::EV_MOUSEUP("mouseup");
const std::string TableRenderer::EV_MOUSEDOWN("mousedown");
const std::string TableRenderer::HIDDEN_INDEX_ROW("hidIdx");


TableRenderer::TableRenderer()
{
}


TableRenderer::~TableRenderer()
{
}


void TableRenderer::renderHead(const Renderable* pRenderable, const RenderContext& context, std::ostream& ostr)
{
	poco_assert_dbg (pRenderable != 0);
	poco_assert_dbg (pRenderable->type() == typeid(Poco::WebWidgets::Table));
	const Table* pTable = static_cast<const Poco::WebWidgets::Table*>(pRenderable);
	const Table::TableColumns& cols = pTable->getColumns();
	bool editable = false;
	for (Table::TableColumns::const_iterator it = cols.begin(); it != cols.end() && !editable; ++it)
	{
		if ((*it) && (*it)->getCell())
			editable |= (*it)->isEditable();
	}
	if (editable)
		ostr << "new Ext.grid.EditorGridPanel({";
	else
		ostr << "new Ext.grid.GridPanel({";

	TableRenderer::renderProperties(pTable, context, ostr);

	ostr << "})";
}


void TableRenderer::renderBody(const Renderable* pRenderable, const RenderContext& context, std::ostream& ostr)
{
}


Poco::WebWidgets::JSDelegate TableRenderer::createCellValueChangedServerCallback(const Table* pTable)
{
	static const std::string signature("function(obj)");
	//extract the true row index from the last column!
	std::string origRow("+obj.record.get('");
	origRow.append(Poco::NumberFormatter::format(static_cast<Poco::UInt32>(pTable->getColumnCount())));
	origRow.append("')");
	std::map<std::string, std::string> addParams;
	addParams.insert(std::make_pair(Table::FIELD_COL, "+obj.column"));
	addParams.insert(std::make_pair(Table::FIELD_ROW, origRow));
	//problem: I need the displayed string from teh renderer, not the value!
	// date fields cause problems here, and I only habe one cellclick event per table not per column!
	// from the table get the TableColumn, from this get the renderer for the given col and render obj.value
	// {(var r=obj.grid.getColumnModel().getRenderer(obj.column))?r(obj.value);:obj.value;}, hm renderer exists for everthing
	addParams.insert(std::make_pair(Table::FIELD_VAL, "+obj.grid.getColumnModel().getRenderer(obj.column)(obj.value)")); 
	addParams.insert(std::make_pair(RequestHandler::KEY_EVID, Table::EV_CELLVALUECHANGED));
	const std::string& success = pTable->cellValueChanged.getOnSuccess();

	return Utility::createServerCallback(signature, addParams, pTable->id(), success, pTable->cellValueChanged.getOnFailure());
}



Poco::WebWidgets::JSDelegate TableRenderer::createBeforeCellValueChangedServerCallback(const Table* pTable)
{static const std::string signature("function(obj)");
	//extract the true row index from the last column!
	std::string origRow("+obj.record.get('");
	origRow.append(Poco::NumberFormatter::format(static_cast<Poco::UInt32>(pTable->getColumnCount())));
	origRow.append("')");
	std::map<std::string, std::string> addParams;
	addParams.insert(std::make_pair(Table::FIELD_COL, "+obj.column"));
	addParams.insert(std::make_pair(Table::FIELD_ROW, origRow));
	//problem: I need the displayed string from teh renderer, not the value!
	// date fields cause problems here, and I only habe one cellclick event per table not per column!
	// from the table get the TableColumn, from this get the renderer for the given col and render obj.value
	// {(var r=obj.grid.getColumnModel().getRenderer(obj.column))?r(obj.value);:obj.value;}, hm renderer exists for everthing
	addParams.insert(std::make_pair(Table::FIELD_VAL, "+obj.grid.getColumnModel().getRenderer(obj.column)(obj.value)")); 
	addParams.insert(std::make_pair(RequestHandler::KEY_EVID, Table::EV_BEFORECELLVALUECHANGED));
	const std::string& success = pTable->beforeCellValueChanged.getOnSuccess();

	return Utility::createServerCallback(signature, addParams, pTable->id(), success, pTable->beforeCellValueChanged.getOnFailure());
}


Poco::WebWidgets::JSDelegate TableRenderer::createAfterLoadServerCallback(const Table* pTable)
{
	poco_check_ptr (pTable);
	static const std::string signature("function(aStore, recs, op)");
	std::map<std::string, std::string> addParams;
	addParams.insert(std::make_pair(RequestHandler::KEY_EVID, Table::EV_AFTERLOAD));
	return Utility::createServerCallback(signature, addParams, pTable->id(), pTable->afterLoad.getOnSuccess(), pTable->afterLoad.getOnFailure());
}



Poco::WebWidgets::JSDelegate TableRenderer::createRenderServerCallback(const Table* pTable)
{
	poco_check_ptr (pTable);
	static const std::string signature("function(grid, cfg)");
	std::map<std::string, std::string> addParams;
	addParams.insert(std::make_pair(RequestHandler::KEY_EVID, Table::EV_RENDER));
	return Utility::createServerCallback(signature, addParams, pTable->id(), pTable->afterRender.getOnSuccess(), pTable->afterRender.getOnFailure());
}


Poco::WebWidgets::JSDelegate TableRenderer::createCellClickedServerCallback(const Table* pTable)
{
	poco_check_ptr (pTable);
	static const std::string signature("function(theGrid,row,col,e)");
	//extract the true row index from the last column!
	std::string origRow("+theGrid.getStore().getAt(row).get('");
	origRow.append(Poco::NumberFormatter::format(static_cast<Poco::UInt32>(pTable->getColumnCount())));
	origRow.append("')");
	std::map<std::string, std::string> addParams;
	addParams.insert(std::make_pair(Table::FIELD_COL, "+col"));
	addParams.insert(std::make_pair(Table::FIELD_ROW, origRow));
	addParams.insert(std::make_pair(RequestHandler::KEY_EVID, Table::EV_CELLCLICKED));
	return Utility::createServerCallback(signature, addParams, pTable->id(), pTable->cellClicked.getOnSuccess(), pTable->cellClicked.getOnFailure());
}


Poco::WebWidgets::JSDelegate TableRenderer::createBeforeCellClickedServerCallback(const Table* pTable)
{
	poco_check_ptr (pTable);
	static const std::string signature("function(theGrid,row,col,e)");
	//extract the true row index from the last column!
	std::string origRow("+theGrid.getStore().getAt(row).get('");
	origRow.append(Poco::NumberFormatter::format(static_cast<Poco::UInt32>(pTable->getColumnCount())));
	origRow.append("')");
	std::map<std::string, std::string> addParams;
	addParams.insert(std::make_pair(Table::FIELD_COL, "+col"));
	addParams.insert(std::make_pair(Table::FIELD_ROW, origRow));
	addParams.insert(std::make_pair(RequestHandler::KEY_EVID, Table::EV_BEFORECELLCLICKED));
	return Utility::createServerCallback(signature, addParams, pTable->id(), pTable->beforeCellClicked.getOnSuccess(), pTable->beforeCellClicked.getOnFailure());
}


Poco::WebWidgets::JSDelegate TableRenderer::createRowClickedServerCallback(const Table* pTable)
{
	poco_check_ptr (pTable);
	poco_assert (pTable->getSelectionModel() != Table::SM_CELL);
	
	/// Method signature is rowselect : ( SelectionModel this, Number rowIndex, Ext.Data.Record r )
	static const std::string signature("function(sm,row,r)");
	//extract the true row index from the last column!
	std::string origRow("+r.get('");
	origRow.append(Poco::NumberFormatter::format(static_cast<Poco::UInt32>(pTable->getColumnCount())));
	origRow.append("')");
	std::map<std::string, std::string> addParams;
	addParams.insert(std::make_pair(Table::FIELD_ROW, origRow));
	addParams.insert(std::make_pair(RequestHandler::KEY_EVID, Table::EV_ROWCLICKED));
	return Utility::createServerCallback(signature, addParams, pTable->id(), pTable->rowClicked.getOnSuccess(), pTable->rowClicked.getOnFailure());
}


Poco::WebWidgets::JSDelegate TableRenderer::createBeforeRowClickedServerCallback(const Table* pTable)
{
	poco_check_ptr (pTable);
	poco_assert (pTable->getSelectionModel() != Table::SM_CELL);
	
	/// Method signature is rowselect : ( SelectionModel this, Number rowIndex, Ext.Data.Record r )
	static const std::string signature("function(sm,row,r)");
	//extract the true row index from the last column!
	std::string origRow("+r.get('");
	origRow.append(Poco::NumberFormatter::format(static_cast<Poco::UInt32>(pTable->getColumnCount())));
	origRow.append("')");
	std::map<std::string, std::string> addParams;
	addParams.insert(std::make_pair(Table::FIELD_ROW, origRow));
	addParams.insert(std::make_pair(RequestHandler::KEY_EVID, Table::EV_BEFOREROWCLICKED));
	return Utility::createServerCallback(signature, addParams, pTable->id(), pTable->beforeRowClicked.getOnSuccess(), pTable->beforeRowClicked.getOnFailure());
}


Poco::WebWidgets::JSDelegate TableRenderer::createMouseUpServerCallback(const Table* pTable)
{
	poco_check_ptr (pTable);
	static const std::string signature("function(e)");
	std::map<std::string, std::string> addParams;
	addParams.insert(std::make_pair(RequestHandler::KEY_EVID, Table::EV_MOUSEUP));
	return Utility::createServerCallback(signature, addParams, pTable->id(), pTable->mouseUp.getOnSuccess(), pTable->mouseUp.getOnFailure());
}


Poco::WebWidgets::JSDelegate TableRenderer::createMouseDownServerCallback(const Table* pTable)
{
	poco_check_ptr (pTable);
	static const std::string signature("function(e)");
	std::map<std::string, std::string> addParams;
	addParams.insert(std::make_pair(RequestHandler::KEY_EVID, Table::EV_MOUSEDOWN));
	return Utility::createServerCallback(signature, addParams, pTable->id(), pTable->mouseDown.getOnSuccess(), pTable->mouseDown.getOnFailure());
}


void TableRenderer::renderProperties(const Table* pTable, const RenderContext& context, std::ostream& ostr)
{
	WebApplication& app = WebApplication::instance();
	Renderable::ID id = pTable->id();
	Utility::writeRenderableProperties(pTable, ostr);
	const Table::TableColumns& cols = pTable->getColumns();
	bool editable = false;
	for (Table::TableColumns::const_iterator it = cols.begin(); it != cols.end() && !editable; ++it)
	{
		if ((*it) && (*it)->getCell())
			editable |= (*it)->isEditable();
	}
	ostr << ",listeners:{";
	bool written = false;
	if (editable)
	{
		JSDelegate jsDel("function(obj){obj.grid.getStore().commitChanges();}");
		std::list<JSDelegate> modList(pTable->cellValueChanged.jsDelegates());
		modList.push_back(jsDel);
		if (pTable->cellValueChanged.willDoServerCallback())
			written = Utility::writeJSEvent(ostr, EV_AFTEREDIT, modList, 
					TableRenderer::createCellValueChangedServerCallback(pTable), 
					pTable->cellValueChanged.getServerCallbackPos());
		else					
			written = Utility::writeJSEvent(ostr, EV_AFTEREDIT, modList);
		if (pTable->beforeCellValueChanged.hasJavaScriptCode())
		{	
			if (written)
				ostr << ",";
			if (pTable->beforeCellValueChanged.willDoServerCallback())
				written = Utility::writeJSEvent(ostr, EV_BEFORECELLVALUECHANGED, modList, 
						TableRenderer::createBeforeCellValueChangedServerCallback(pTable), 
						pTable->beforeCellValueChanged.getServerCallbackPos());
			else					
				written = Utility::writeJSEvent(ostr, EV_BEFORECELLVALUECHANGED, modList);	
		}
	}
	
	if (pTable->cellClicked.hasJavaScriptCode())
	{
		if (written)
			ostr << ",";
		if (pTable->cellClicked.willDoServerCallback())
			written = Utility::writeJSEvent(ostr, EV_CELLCLICKED, pTable->cellClicked.jsDelegates(),
										TableRenderer::createCellClickedServerCallback(pTable),
										pTable->cellClicked.getServerCallbackPos());
		else
			written = Utility::writeJSEvent(ostr, EV_CELLCLICKED, pTable->cellClicked.jsDelegates());
	}
	
	if (pTable->beforeCellClicked.hasJavaScriptCode())
	{
		if (written)
			ostr << ",";
		if (pTable->beforeCellClicked.willDoServerCallback())
			written = Utility::writeJSEvent(ostr, EV_BEFORECELLCLICKED, pTable->beforeCellClicked.jsDelegates(),
										TableRenderer::createBeforeCellClickedServerCallback(pTable),
										pTable->beforeCellClicked.getServerCallbackPos());
		else
			written = Utility::writeJSEvent(ostr, EV_BEFORECELLCLICKED, pTable->beforeCellClicked.jsDelegates());
	}
	
	if (pTable->afterRender.hasJavaScriptCode())
	{
		if (written)
			ostr << ",";
		if (pTable->afterRender.willDoServerCallback())
			written = Utility::writeJSEvent(ostr, EV_RENDER, pTable->afterRender.jsDelegates(),
										TableRenderer::createRenderServerCallback(pTable),
										pTable->afterRender.getServerCallbackPos());
		else
			written = Utility::writeJSEvent(ostr, EV_RENDER, pTable->afterRender.jsDelegates());
	}
	
	if (pTable->mouseUp.hasJavaScriptCode())
	{
		if (written)
			ostr << ",";
		if (pTable->mouseUp.willDoServerCallback())
			written = Utility::writeJSEvent(ostr, EV_MOUSEUP, pTable->mouseUp.jsDelegates(),
										TableRenderer::createMouseUpServerCallback(pTable),
										pTable->mouseUp.getServerCallbackPos());
		else
			written = Utility::writeJSEvent(ostr, EV_MOUSEUP, pTable->mouseUp.jsDelegates());
	}
	
	if (pTable->mouseDown.hasJavaScriptCode())
	{
		if (written)
			ostr << ",";
		if (pTable->mouseDown.willDoServerCallback())
			written = Utility::writeJSEvent(ostr, EV_MOUSEDOWN, pTable->mouseDown.jsDelegates(),
										TableRenderer::createMouseDownServerCallback(pTable),
										pTable->mouseDown.getServerCallbackPos());
		else
			written = Utility::writeJSEvent(ostr, EV_MOUSEDOWN, pTable->mouseDown.jsDelegates());
	}
	
	ostr << "},"; //close listeners
	
	renderColumns(pTable, context, ostr);
	// forbid reordering of columns, otherwise col index will not match the col index at the server
	// sorting is allowed though, i.e row matching is active
	ostr << ",clicksToEdit:1,stripeRows:true,enableColumnHide:false,enableColumnMove:false,loadMask:true";
	if (pTable->getDragAndDrop())
		ostr << ",enableDragDrop:true,ddGroup:'" << createDnDGroupName(pTable) << "'";
		
	if (pTable->getSelectionModel() != Table::SM_CELL)
	{
		if (pTable->getSelectionModel() == Table::SM_SINGLEROW)
			ostr << ",selModel:new Ext.grid.RowSelectionModel({singleSelect:true";
		else if (pTable->getSelectionModel() == Table::SM_MULTIROW)
			ostr << ",selModel:new Ext.grid.RowSelectionModel({singleSelect:false";
		if (pTable->rowClicked.hasJavaScriptCode() || pTable->beforeRowClicked.hasJavaScriptCode())
		{
			ostr << ",listeners:{";
			if (pTable->rowClicked.willDoServerCallback())
				written = Utility::writeJSEvent(ostr, EV_ROWCLICKED, pTable->rowClicked.jsDelegates(),
										TableRenderer::createRowClickedServerCallback(pTable),
										pTable->rowClicked.getServerCallbackPos());
			else
				written = Utility::writeJSEvent(ostr, EV_ROWCLICKED, pTable->rowClicked.jsDelegates());
				
			if (pTable->beforeRowClicked.hasJavaScriptCode())
			{
				if (written)
					ostr << ",";
				if (pTable->beforeRowClicked.willDoServerCallback())
					written = Utility::writeJSEvent(ostr, EV_BEFOREROWCLICKED, pTable->beforeRowClicked.jsDelegates(),
										TableRenderer::createBeforeRowClickedServerCallback(pTable),
										pTable->beforeRowClicked.getServerCallbackPos());
				else
					written = Utility::writeJSEvent(ostr, EV_BEFOREROWCLICKED, pTable->beforeRowClicked.jsDelegates());	
			}
			ostr << "}";
		}
		ostr << "})"; //close selModel
	}
	if (pTable->getWidth() > 0)
		ostr << ",width:" << pTable->getWidth();
	if (pTable->getHeight() > 0)
		ostr << ",height:" << pTable->getHeight();
	ostr << ",viewConfig: {";
	ostr <<		"tpl: new Ext.XTemplate('<div class=\"cell\"></div>'),";
	ostr <<		"getRowClass: function(rec, idx, p, store) {return 'cell';}";
	ostr <<		"}";
	ostr << ",store:";
	ostr << "(tmpLocal=";
	renderStore(pTable, ostr);
	ostr << ")";
	
	// bbar: new Ext.PagingToolbar({
	 //           pageSize: 25,
	 //           store: store,
	 //           displayInfo: true,
	 //           displayMsg: 'Displaying topics {0} - {1} of {2}',
	 //           emptyMsg: "No topics to display",
	 //           items:[
	 //               '-', {
	 //               pressed: true,
	 //               enableToggle:true,
	 //               text: 'Show Preview',
	 //               cls: 'x-btn-text-icon details',
	 //               toggleHandler: toggleDetails
	 //           }]
	 //       })
	 if (pTable->getPagingSize() > 0)
	 {
		ostr << ",remoteSort:true";
		ostr << ",bbar:new Ext.PagingToolbar({";
		ostr <<		"pageSize:" << pTable->getPagingSize() << ",";
		ostr <<		"displayInfo:true,";
		ostr <<		"displayMsg: 'Displaying topics {0} - {1} of {2}',";
		ostr <<		"emptyMsg:'No topics to display',";
		ostr <<		"store:tmpLocal})";
	 }
	 
	Table* pT = const_cast<Table*>(pTable);
	pT->beforeLoad += Poco::delegate(&TableRenderer::onBeforeLoad);
	WebApplication::instance().registerAjaxProcessor(Poco::NumberFormatter::format(id), pT);
}


std::string TableRenderer::createDnDGroupName(const Table* pTable)
{
	poco_check_ptr (pTable);
	return "ddgrid" + Poco::NumberFormatter::format(pTable->id());
}


void TableRenderer::renderColumns(const Table* pTable, const RenderContext& context, std::ostream& ostr)
{
	
	//columns: [...]
	ostr << "columns:[";
	const Table::TableColumns& columns = pTable->getColumns();
	Table::TableColumns::const_iterator it = columns.begin();
	int i = 0;
	for (; it != columns.end(); ++it, ++i)
	{
		if (i != 0)
			ostr << ",";

		renderColumn(pTable, *(*it), i, context, ostr);
	}
	// must be last column, so we don't need row/col correction!
	// the last column is required to be able to handle sorting on the client side and to 
	// match client-row indizes to server-row indizes
	// we use the very first entry as dummy data index
	ostr << ",{id:'" << HIDDEN_INDEX_ROW << "',header:'" << HIDDEN_INDEX_ROW << "',dataIndex:'" << i << "',";
	ostr << "hidden:true}";
	ostr << "]";
}


void TableRenderer::renderColumn(const Table* pTable, const TableColumn& tc, int idx, const RenderContext& context, std::ostream& ostr)
{
	static LookAndFeel& laf = Utility::getDefaultRenderers();

	// {id:'company', header: "Company", width: 200, sortable: true, dataIndex: 'company'}
	// {header: "Last Updated", width: 135, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'}
	ostr << "{";
	std::string hdr(Utility::safe(tc.getHeader()));

	ostr << "header:'" << hdr << "',dataIndex:'" << idx << "'";

	if (tc.getWidth() > 0)
		ostr << ",width:" << tc.getWidth();
	if (tc.isSortable())
		ostr << ",sortable:true";
	else
		ostr << ",menuDisabled:true";
	if (tc.isHidden())
		ostr << ",hidden:true";
	
	static TableCellHandlerFactory& fty = TableCellHandlerFactory::instance();

	if (tc.getCell())
	{
		AbstractTableCellHandler::Ptr pHandler = fty.factory(tc.getCell());
		if (tc.getCell()->isEditable())
			ostr << ",editable:true";
		if (tc.getCell()->isEditable() && pHandler->useEditor())
		{
			ostr << ",editor:";
			tc.getCell()->renderHead(context, ostr);
		}
		if (!tc.getCustomRenderer().empty())
		{
			ostr << ",renderer:" << tc.getCustomRenderer();
		}
		else if (pHandler->useRenderer())
		{
			ostr << ",renderer:";
			pHandler->writeDynamicData(ostr);
		}
	}

	ostr << "}";
}


void TableRenderer::renderStore(const Table* pTable, std::ostream& ostr)
{

	//new Ext.data.SimpleStore({
	//	fields: [
	//	   {name: 'company'},
	//	   {name: 'price', type: 'float'},
	//	   {name: 'change', type: 'float'},
	//	   {name: 'pctChange', type: 'float'},
	//	   {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
	//	],
	//  proxy: new Ext.data.HttpProxy({url:'/myuri;...'}),
	//  reader: new Ext.data.ArrayReader()
	//});

	// we don't know the type, we just have a formatter, the name is always the idx!
	// we use the formatter later to set a renderer for a different type than string
	const Table::TableColumns& columns = pTable->getColumns();
	ostr << "new Ext.data.SimpleStore({autoLoad:true,fields:[";
	Table::TableColumns::const_iterator it = columns.begin();
	int i = 0;
	for (; it != columns.end(); ++it, ++i)
	{
		if (i != 0)
			ostr << ",";
		if ((*it)->getCell() && (*it)->getCell()->type() == typeid(Poco::WebWidgets::DateFieldCell))
		{
			Poco::WebWidgets::DateFieldCell::Ptr pDf = (*it)->getCell().cast<Poco::WebWidgets::DateFieldCell>();
			
			ostr << "{name:'" << i << "',type:'date',dateFormat:'" << Utility::convertPocoDateToPHPDate(pDf->getFormat()) << "'}";
		}
		else
			ostr << "{name:'" << i << "'}";
	}
	ostr << ",{name:'" << i << "'}";
	ostr << "],"; // close fields
	ostr << "proxy:new Ext.data.HttpProxy({url:";
	std::map<std::string, std::string> addParams;
	addParams.insert(std::make_pair(RequestHandler::KEY_EVID,Table::EV_LOADDATA));
	
	
	std::string url(Utility::createURI(addParams, pTable->id()));
	ostr << url << "}),";
	ostr << "reader:new Ext.data.ArrayReader()";
	if (pTable->afterLoad.hasJavaScriptCode())
	{
		ostr << ",listeners:{";
		if (pTable->afterLoad.willDoServerCallback())
			Utility::writeJSEvent(ostr, EV_AFTERLOAD, pTable->afterLoad.jsDelegates(), createAfterLoadServerCallback(pTable), pTable->afterLoad.getServerCallbackPos());
		else
			Utility::writeJSEvent(ostr, EV_AFTERLOAD, pTable->afterLoad.jsDelegates());
		ostr << "}";
	}
	
	ostr << "})";
}


void TableRenderer::onBeforeLoad(void* pSender, Table::LoadData& ld)
{
	ld.pResponse->setChunkedTransferEncoding(true);
	ld.pResponse->setContentType(ArrayTableSerializer::contentType());
	std::ostream& out = ld.pResponse->send();
	ArrayTableSerializer::serialize(out, ld.pTable, ld.firstRow, ld.rowCnt);
}


} } } // namespace Poco::WebWidgets::ExtJS