refactored form handling

WebWidgets/ExtJS/include/Poco/WebWidgets/ExtJS/FormRenderer.h

@@ -43,10 +43,11 @@
 #include "Poco/WebWidgets/ExtJS/ExtJS.h"
 #include "Poco/WebWidgets/Renderer.h"
 #include "Poco/WebWidgets/Form.h"
-
+#include "Poco/WebWidgets/JSDelegate.h"
 
 namespace Poco {
 namespace WebWidgets {
+	class Form;
 namespace ExtJS {
 
 
@@ -68,6 +69,10 @@ public:
 
 	static std::string formVariableName(const Form* pForm);
 		/// Creates the variable name for the form
+		
+	static Poco::WebWidgets::JSDelegate createReloadFunction(const std::string& fctName, const Form* pForm);
+		/// Creates a function with the given fctName (can be empty) that reloads the form
+		/// E.g.: add the returned JSDelegate to pReload->buttonClicked
 };
 
 

WebWidgets/ExtJS/src/FormRenderer.cpp

@@ -38,7 +38,9 @@
 #include "Poco/WebWidgets/Form.h"
 #include "Poco/WebWidgets/Button.h"
 #include "Poco/WebWidgets/WebApplication.h"
+#include "Poco/WebWidgets/RequestHandler.h"
 #include "Poco/NumberFormatter.h"
+#include <sstream>
 
 
 namespace Poco {
@@ -83,6 +85,7 @@ void FormRenderer::renderHead(const Renderable* pRenderable, const RenderContext
 	}
 	ostr << "]})";
 	theApp.endForm(*pForm);
+	WebApplication::instance().registerAjaxProcessor(Poco::NumberFormatter::format(pForm->id()), const_cast<Form*>(pForm));
 }
 
 
@@ -98,4 +101,18 @@ std::string FormRenderer::formVariableName(const Form* pForm)
 }
 
 
+Poco::WebWidgets::JSDelegate FormRenderer::createReloadFunction(const std::string& fctName, const Form* pForm)
+{
+	std::ostringstream out;
+	out << "function ";
+	out << fctName << "(){" << std::endl;
+	out <<		"var theForm = Ext.getCmp('" << pForm->id() << "');" << std::endl;
+	out <<		"var uri = '" << pForm->getURI().toString() << "/;" << RequestHandler::KEY_EVID << "=" << Form::EV_RELOAD << "&";
+	out <<	RequestHandler::KEY_ID << "=" << pForm->id() << "';" << std::endl;
+	out <<		"theForm.load({url:uri,method:'GET'});" << std::endl; // success, failure handlers
+	out <<	"}" << std::endl;
+	return jsDelegate(out.str());
+}
+
+
 } } } // namespace Poco::WebWidgets::ExtJS

WebWidgets/include/Poco/WebWidgets/Button.h

@@ -58,11 +58,8 @@ class WebWidgets_API Button: public Control
 {
 public:
 	typedef Poco::AutoPtr<Button> Ptr;
-	typedef Event<Button> ButtonEvent;
-
-	JavaScriptEvent<AjaxParameters> ajaxButtonClicked;
 	
-	JavaScriptEvent<ButtonEvent> buttonClicked;
+	JavaScriptEvent<AjaxParameters> buttonClicked;
 
 	Button(const std::string& name);
 		/// Creates a Button with the given name.
@@ -73,11 +70,8 @@ public:
 	Button();
 		/// Creates an anonymous Button.
 
-	void fireAjaxButtonClicked(void* pSender, AjaxParameters& params);
+	void fireButtonClicked(void* pSender, AjaxParameters& params);
 		/// Fires the ajaxButtonClicked event.
-		
-	void fireButtonClicked(void* pSender);
-		/// Fires the buttonClicked event.
 
 protected:
 	Button(const std::string& name, const std::type_info& type);

WebWidgets/include/Poco/WebWidgets/ButtonCell.h

@@ -57,9 +57,7 @@ public:
 
 	static const std::string EV_BUTTONCLICKED;
 	
-	AjaxDelegate ajaxButtonClicked;
-	
-	Delegate buttonClicked;
+	AjaxDelegate buttonClicked;
 
 	ButtonCell(View* pOwner);
 		/// Creates a ButtonCell.
@@ -68,6 +66,8 @@ public:
 	void handleForm(const std::string& field, const std::string& value);
 	
 	void handleAjaxRequest(const Poco::Net::NameValueCollection& args, Poco::Net::HTTPServerResponse& response);
+	
+	bool serializeJSON(std::ostream& out, const std::string& name);
 
 protected:
 	~ButtonCell();
@@ -79,6 +79,12 @@ protected:
 };
 
 
+inline bool ButtonCell::serializeJSON(std::ostream& out, const std::string& name)
+{
+	return false;
+}
+
+
 } } // namespace Poco::WebWidgets
 
 

WebWidgets/include/Poco/WebWidgets/Cell.h

@@ -102,6 +102,8 @@ public:
 		/// the Formatter. If no Formatter has been set, sets the value
 		/// to the given string.
 		
+	bool hasValue() const;
+		
 	void setString(const std::string& value);	
 		/// Sets the value for this Cell to the given string.
 		
@@ -281,6 +283,12 @@ inline Cell::EditMode Cell::getEditMode() const
 }
 
 
+inline bool Cell::hasValue() const
+{
+	return !getValue().empty();
+}
+
+
 } } // namespace Poco::WebWidgets
 
 

WebWidgets/include/Poco/WebWidgets/ComboBoxCell.h

@@ -124,6 +124,8 @@ public:
 	void handleAjaxRequest(const Poco::Net::NameValueCollection& args, Poco::Net::HTTPServerResponse& response);
 		/// Handles a complete AJAX request submitted by the client.
 		
+	bool serializeJSON(std::ostream& out, const std::string& name);	
+		
 protected:
 	~ComboBoxCell();
 		/// Destroys the ComboBoxCell.

WebWidgets/include/Poco/WebWidgets/DateFieldCell.h

@@ -73,6 +73,8 @@ public:
 	const Poco::DateTime& getDate() const;
 		/// returns the date if set, otherwise an exception, use getValue().empty() to check if it is valid
 
+	bool serializeJSON(std::ostream& out, const std::string& name);
+	
 private:
 	std::string _format;
 };

WebWidgets/include/Poco/WebWidgets/Form.h

@@ -41,20 +41,34 @@
 
 
 #include "Poco/WebWidgets/ContainerView.h"
+#include "Poco/WebWidgets/RequestProcessor.h"
 #include "Poco/URI.h"
+#include "Poco/FIFOEvent.h"
+#include <map>
 
 
 namespace Poco {
+	namespace Net {
+		class HTMLForm;
+	}
 namespace WebWidgets {
 
 
-class WebWidgets_API Form: public ContainerView
+class WebWidgets_API Form: public ContainerView, public RequestProcessor
 	/// A Form represents a HTML form.
 {
 public:
 	typedef Poco::AutoPtr<Form> Ptr;
 	
-	static const std::string FORM_ID;
+	static const std::string FORM_ID; /// form name to 
+	static const std::string EV_RELOAD; /// event name for reloading the form
+	static const std::string METHOD_GET;
+	static const std::string METHOD_POST;
+	
+	static const std::string ENCODING_URL;       /// "application/x-www-form-urlencoded"
+	static const std::string ENCODING_MULTIPART; /// "multipart/form-data"
+	
+	Poco::FIFOEvent<Form*> beforeReload; /// triggered before a Form is reloaded so that you can update form fields with recent values
 	
 	Form(const Poco::URI& uri);
 		/// Creates an anonymous Form.
@@ -76,12 +90,26 @@ public:
 
 	const Poco::URI& getURI() const;
 		/// Returns the URL of the form
-
-	static const std::string METHOD_GET;
-	static const std::string METHOD_POST;
 	
-	static const std::string ENCODING_URL;       /// "application/x-www-form-urlencoded"
-	static const std::string ENCODING_MULTIPART; /// "multipart/form-data"
+	void handleForm(const std::string& field, const std::string& value);
+		/// Handles a form field submitted by the client.
+		
+	void handleForm(const Poco::Net::HTMLForm& form);
+		/// Handles a complete form submit
+	
+	void handleAjaxRequest(const Poco::Net::NameValueCollection& args, Poco::Net::HTTPServerResponse& response);
+		/// Handles a complete AJAX request submitted by the client.
+	
+	bool serializeJSON(std::ostream& out, const std::string&);
+	
+	void serializeJSONImpl(std::ostream& out);
+	
+	RequestProcessor* getFormProcessor(const std::string& name);
+		/// Returns the requestprocessor or null
+		
+	void registerFormProcessor(const std::string& name, RequestProcessor* pProc);
+		/// Registers a RequestProcessor for a request.
+	
 			
 protected:
 	Form(const std::string& name, const std::type_info& type, const Poco::URI& uri);
@@ -94,9 +122,11 @@ protected:
 		/// Destroys the Form.
 		
 private:
-	std::string _method;
-	std::string _encoding;
-	Poco::URI   _uri;
+	typedef std::map<std::string, RequestProcessor* > RequestProcessorMap;
+	std::string         _method;
+	std::string         _encoding;
+	Poco::URI           _uri;
+	RequestProcessorMap _namedChildren;
 };
 
 
@@ -121,6 +151,13 @@ inline const Poco::URI& Form::getURI() const
 }
 
 
+inline bool Form::serializeJSON(std::ostream& out, const std::string&)
+{
+	serializeJSONImpl(out);
+	return true;
+}
+
+
 } } // namespace Poco::WebWidgets
 
 

WebWidgets/include/Poco/WebWidgets/ListBoxCell.h

@@ -116,6 +116,8 @@ public:
 
 	// Cell
 	void handleForm(const std::string& field, const std::string& value);
+	
+	bool serializeJSON(std::ostream& out, const std::string& name);
 
 protected:
 	~ListBoxCell();

WebWidgets/include/Poco/WebWidgets/NumberFieldCell.h

@@ -59,6 +59,8 @@ public:
 
 	virtual ~NumberFieldCell();
 		/// Destroys the NumberFieldCell.
+		
+	bool serializeJSON(std::ostream& out, const std::string& name);	
 };
 
 

WebWidgets/include/Poco/WebWidgets/Page.h

@@ -97,6 +97,9 @@ public:
 	void handleForm(const std::string& field, const std::string& value);
 		/// Dummy implementation
 		
+	bool serializeJSON(std::ostream& out, const std::string& name);
+		/// Dummy implementation
+		
 	void addDynamicFunction(const std::string& jsCode);
 		/// Adds a JavaScript function to the page. Static functions should be written to a JS file
 		/// and included via the ResourceManager, only dynamic fucntions (ie. functions that are generated
@@ -189,6 +192,12 @@ inline void Page::appendPostRenderCode(const std::string& js)
 }
 
 
+inline bool Page::serializeJSON(std::ostream&, const std::string&)
+{
+	return false;
+}
+
+
 } } // namespace Poco::WebWidgets
 
 

WebWidgets/include/Poco/WebWidgets/PasswordFieldCell.h

@@ -58,6 +58,8 @@ public:
 
 	virtual ~PasswordFieldCell();
 		/// Destroys the PasswordFieldCell.
+		
+	bool serializeJSON(std::ostream& out, const std::string& name);
 };
 
 

WebWidgets/include/Poco/WebWidgets/RequestProcessor.h

@@ -41,6 +41,7 @@
 
 
 #include "Poco/WebWidgets/WebWidgets.h"
+#include <ostream>
 
 
 namespace Poco {
@@ -65,6 +66,8 @@ public:
 	virtual void handleAjaxRequest(const Poco::Net::NameValueCollection& args, Poco::Net::HTTPServerResponse& response) = 0;
 		/// Handles a complete AJAX request submitted by the client.
 
+	virtual bool serializeJSON(std::ostream& out, const std::string& name) = 0;
+		/// Serializes a form field to the client.
 protected:
 	RequestProcessor();
 		/// Creates the RequestProcessor.

WebWidgets/include/Poco/WebWidgets/SubmitButton.h

@@ -41,6 +41,7 @@
 
 
 #include "Poco/WebWidgets/Button.h"
+#include "Poco/FIFOEvent.h"
 
 
 namespace Poco {
@@ -55,6 +56,8 @@ class WebWidgets_API SubmitButton: public Button
 {
 public:
 	typedef Poco::AutoPtr<SubmitButton> Ptr;
+	
+	FIFOEvent<SubmitButton*> afterSubmit; /// thrown whenever all form values are assigned and the submit is done
 
 	SubmitButton();
 		/// Creates an anonymous SubmitButton.

WebWidgets/include/Poco/WebWidgets/Table.h

@@ -208,6 +208,8 @@ public:
 	bool autoEdit() const;
 		// Returns if autoEdit is on/off
 		
+	bool serializeJSON(std::ostream& out, const std::string& name);	
+		
 protected:
 	Table(const std::string& name, const std::type_info& type, const TableColumns& tc, TableModel::Ptr pModel);
 		/// Creates a Table and assigns it the given name.

WebWidgets/include/Poco/WebWidgets/TextEditCell.h

@@ -79,6 +79,8 @@ public:
 
 	// Cell
 	void handleForm(const std::string& field, const std::string& value);
+	
+	bool serializeJSON(std::ostream& out, const std::string& name);
 
 protected:
 	~TextEditCell();

WebWidgets/include/Poco/WebWidgets/TextFieldCell.h

@@ -75,6 +75,8 @@ public:
 
 	// Cell
 	void handleForm(const std::string& field, const std::string& value);
+	
+	bool serializeJSON(std::ostream& out, const std::string& name);
 
 protected:
 	~TextFieldCell();

WebWidgets/include/Poco/WebWidgets/TimeFieldCell.h

@@ -73,6 +73,8 @@ public:
 	const Poco::DateTime& getTime() const;
 		/// returns the time if set, otherwise an exception, use getValue().empty() to check if it is valid
 
+	bool serializeJSON(std::ostream& out, const std::string& name);
+	
 private:
 	std::string       _format;
 	TimeField::Format _fmt;

WebWidgets/include/Poco/WebWidgets/ToggleButtonCell.h

@@ -73,6 +73,9 @@ public:
 
 	// Cell
 	void handleForm(const std::string& field, const std::string& value);
+	
+	
+	bool serializeJSON(std::ostream& out, const std::string& name);
 
 protected:
 	~ToggleButtonCell();

WebWidgets/include/Poco/WebWidgets/WebApplication.h

@@ -140,7 +140,7 @@ private:
 	
 	typedef std::map<std::string, RequestProcessor* > RequestProcessorMap;
 	typedef std::map<Renderable::ID, SubmitButtonCell*> SubmitButtons;
-	typedef std::map<Renderable::ID, RequestProcessorMap> FormMap;
+	typedef std::map<Renderable::ID, Form*> FormMap;
 	typedef std::stack<Renderable::ID> OpenForms;
 	
 	ResourceManager::Ptr                      _pResource;

WebWidgets/src/Button.cpp

@@ -101,8 +101,7 @@ void Button::init(Cell::Ptr ptrCell)
 {
 	ButtonCell::Ptr pCell = ptrCell.cast<ButtonCell>();
 	poco_check_ptr (pCell);
-	pCell->buttonClicked = delegate(*this, &Button::fireButtonClicked);
-	pCell->ajaxButtonClicked = ajaxDelegate(*this, &Button::fireAjaxButtonClicked);
+	pCell->buttonClicked = ajaxDelegate(*this, &Button::fireButtonClicked);
 	setCell(pCell);
 }
 
@@ -114,16 +113,9 @@ void Button::init()
 }
 
 
-void Button::fireAjaxButtonClicked(void* pSender, AjaxParameters& params)
+void Button::fireButtonClicked(void* pSender, AjaxParameters& params)
 {
-	ajaxButtonClicked(pSender, params);
-}
-
-
-void Button::fireButtonClicked(void* pSender)
-{
-	ButtonEvent clickedEvent(this);
-	buttonClicked(this, clickedEvent);
+	buttonClicked(pSender, params);
 }
 
 

WebWidgets/src/ButtonCell.cpp

@@ -76,10 +76,9 @@ void ButtonCell::handleAjaxRequest(const Poco::Net::NameValueCollection& args, P
 	if (ev == EV_BUTTONCLICKED)
 	{
 		bool handled(false);
-		ajaxButtonClicked(this, args, response, handled);
+		buttonClicked(this, args, response, handled);
 		if (!handled)
 			response.send();
-		buttonClicked(this);
 	}
 	else
 		response.send();

WebWidgets/src/ComboBoxCell.cpp

@@ -36,6 +36,7 @@
 
 #include "Poco/WebWidgets/ComboBoxCell.h"
 #include "Poco/WebWidgets/RequestHandler.h"
+#include "Poco/DateTime.h"
 
 
 namespace Poco {
@@ -133,4 +134,20 @@ void ComboBoxCell::setSelected(const Any& elem)
 	selected(this, aPair);
 }
 
+
+bool ComboBoxCell::serializeJSON(std::ostream& out, const std::string& name)
+{
+	out << name;
+	if (hasSelected())
+	{
+		const Poco::Any& sel = getSelected();
+		if (sel.type() == typeid(std::string) || sel.type() == typeid(Poco::DateTime))
+			out << ":'" << getFormatter()->format(sel) << "'";
+		else
+			out << ":" << getFormatter()->format(sel);
+	}
+	return true;	
+}
+
+
 } } // namespace Poco::WebWidgets

WebWidgets/src/DateFieldCell.cpp

@@ -63,4 +63,15 @@ void DateFieldCell::setFormat(const std::string& dateFormat)
 }
 
 
+bool DateFieldCell::serializeJSON(std::ostream& out, const std::string& name)
+{
+	out << name;
+	if (this->hasValue())
+	{
+		out << ":'" << getFormatter()->format(getValue()) << "'";
+	}
+	return true;
+}
+
+
 } } // namespace Poco::WebWidgets

WebWidgets/src/Form.cpp

@@ -35,6 +35,9 @@
 
 
 #include "Poco/WebWidgets/Form.h"
+#include "Poco/WebWidgets/RequestHandler.h"
+#include "Poco/NumberParser.h"
+#include "Poco/Net/HTMLForm.h"
 
 
 namespace Poco {
@@ -42,6 +45,7 @@ namespace WebWidgets {
 
 
 const std::string Form::FORM_ID("__form__");
+const std::string Form::EV_RELOAD("reload");
 const std::string Form::METHOD_GET("GET");
 const std::string Form::METHOD_POST("POST");
 const std::string Form::ENCODING_URL("application/x-www-form-urlencoded");
@@ -52,7 +56,8 @@ Form::Form(const Poco::URI& uri):
 	ContainerView(typeid(Form)),
 	_method(METHOD_POST),
 	_encoding(ENCODING_MULTIPART),
-	_uri(uri)
+	_uri(uri),
+	_namedChildren()
 {
 }
 
@@ -61,7 +66,8 @@ Form::Form(const std::string& name, const Poco::URI& uri):
 	ContainerView(name, typeid(Form)),
 	_method(METHOD_POST),
 	_encoding(ENCODING_MULTIPART),
-	_uri(uri)
+	_uri(uri),
+	_namedChildren()
 {
 }
 
@@ -70,7 +76,8 @@ Form::Form(const std::string& name, const std::type_info& type, const Poco::URI&
 	ContainerView(name, type),
 	_method(METHOD_POST),
 	_encoding(ENCODING_MULTIPART),
-	_uri(uri)
+	_uri(uri),
+	_namedChildren()
 {
 }
 
@@ -79,7 +86,8 @@ Form::Form(const std::type_info& type, const Poco::URI& uri):
 	ContainerView(type),
 	_method(METHOD_POST),
 	_encoding(ENCODING_MULTIPART),
-	_uri(uri)
+	_uri(uri),
+	_namedChildren()
 {
 }
 
@@ -101,4 +109,92 @@ void Form::setEncoding(const std::string& encoding)
 }
 
 
+void Form::handleForm(const std::string& field, const std::string& value)
+{
+}
+
+
+void Form::handleForm(const Poco::Net::HTMLForm& form)
+{
+	Renderable::ID formID = Poco::NumberParser::parse(form.get(Form::FORM_ID));
+	poco_assert (formID == id());
+		
+	Poco::Net::NameValueCollection::ConstIterator it = form.begin();	
+	RequestProcessorMap processors = _namedChildren; // copy so that a second submit works too!
+	for (;it != form.end(); ++it)
+	{
+		const std::string& key = it->first;
+		RequestProcessorMap::iterator itR = processors.find(key);
+		if (itR != processors.end())
+		{
+			itR->second->handleForm(key, it->second);
+			processors.erase(itR);
+		}
+	}
+	//those that are not included are either deselected or empty
+	RequestProcessorMap::iterator itR = processors.begin();
+	std::string empty;
+	for (; itR != processors.end(); ++itR)
+	{
+		itR->second->handleForm(itR->first, empty);
+	}
+
+}
+
+	
+void Form::handleAjaxRequest(const Poco::Net::NameValueCollection& args, Poco::Net::HTTPServerResponse& response)
+{
+	//a form only supports the refresh event
+	const std::string& ev = args[RequestHandler::KEY_EVID];
+	if (ev == EV_RELOAD)
+	{
+		Form* pThis = this;
+		beforeReload.notify(this, pThis);
+		/// send the JS presentation of the page
+		response.setContentType("text/javascript");
+		response.setChunkedTransferEncoding(true);
+		serializeJSONImpl(response.send());
+	}
+	response.send();
+}
+
+
+void Form::serializeJSONImpl(std::ostream& out)
+{
+	// FIXME: ExtJs specific
+	out << "{";
+		out << "success: true,";
+		out << "data: { ";
+			// serialize children
+			RequestProcessorMap::iterator it = _namedChildren.begin();
+			bool writeComma = false;
+			for (; it != _namedChildren.end(); ++it)
+			{
+				if (writeComma)
+					out << ",";
+				writeComma = it->second->serializeJSON(out, it->first);
+			}
+		out << "}";
+	out << "}";
+}
+
+
+void Form::registerFormProcessor(const std::string& fieldName, RequestProcessor* pProc)
+{
+	// per default we register everything that has a name as form processor
+	std::pair<RequestProcessorMap::iterator, bool> res = _namedChildren.insert(std::make_pair(fieldName, pProc));
+	if (!res.second)
+		res.first->second = pProc;
+}
+
+
+RequestProcessor* Form::getFormProcessor(const std::string& fieldName)
+{
+	RequestProcessorMap::iterator it = _namedChildren.find(fieldName);
+	if (it == _namedChildren.end())
+		return 0;
+	return it->second;
+}
+
+
 } } // namespace Poco::WebWidgets

WebWidgets/src/ListBoxCell.cpp

@@ -35,6 +35,7 @@
 
 
 #include "Poco/WebWidgets/ListBoxCell.h"
+#include "Poco/DateTime.h"
 
 
 namespace Poco {
@@ -168,4 +169,19 @@ const Any& ListBoxCell::getSelected() const
 }
 
 
+bool ListBoxCell::serializeJSON(std::ostream& out, const std::string& name)
+{
+	out << name;
+	if (hasSelected())
+	{
+		const Poco::Any& sel = getSelected();
+		if (sel.type() == typeid(std::string) || sel.type() == typeid(Poco::DateTime))
+			out << ":'" << getFormatter()->format(sel) << "'";
+		else
+			out << ":" << getFormatter()->format(sel);
+	}
+	return true;
+}
+
+
 } } // namespace Poco::WebWidgets

WebWidgets/src/NumberFieldCell.cpp

@@ -54,4 +54,15 @@ NumberFieldCell::~NumberFieldCell()
 }
 
 
+bool NumberFieldCell::serializeJSON(std::ostream& out, const std::string& name)
+{
+	out << name;
+	if (this->hasValue())
+	{
+		out << ":" << getFormatter()->format(getValue());
+	}
+	return true;
+}
+
+
 } } // namespace Poco::WebWidgets

WebWidgets/src/PasswordFieldCell.cpp

@@ -52,4 +52,15 @@ PasswordFieldCell::~PasswordFieldCell()
 }
 
 
+bool PasswordFieldCell::serializeJSON(std::ostream& out, const std::string& name)
+{
+	out << name;
+	if (this->hasValue())
+	{
+		out << ":'" << getFormatter()->format(getValue()) << "'";
+	}
+	return true;
+}
+
+
 } } // namespace Poco::WebWidgets

WebWidgets/src/RequestHandler.cpp

@@ -181,12 +181,7 @@ void RequestHandler::handleAjaxRequest(Poco::Net::HTTPServerRequest& request, Po
 		response.send();
 		return;
 	}
-	SubmitButtonCell* pCell = dynamic_cast<SubmitButtonCell*>(pProc);
-	if (pCell) // hide click event from submitbuttons
-	{
-		response.send();
-		return;
-	}
+	
 	try
 	{
 		pProc->handleAjaxRequest(args, response);

WebWidgets/src/Table.cpp

@@ -352,4 +352,10 @@ Table::LoadData::LoadData(Poco::Net::HTTPServerResponse* pR, Table* pT, int row,
 }
 
 
+bool Table::serializeJSON(std::ostream& out, const std::string& name)
+{
+	return false;
+}
+
+
 } } // namespace Poco::WebWidgets

WebWidgets/src/TextEditCell.cpp

@@ -73,4 +73,15 @@ void TextEditCell::handleForm(const std::string& field, const std::string& value
 }
 
 
+bool TextEditCell::serializeJSON(std::ostream& out, const std::string& name)
+{
+	out << name;
+	if (this->hasValue())
+	{
+		out << ":'" << getFormatter()->format(getValue()) << "'";
+	}
+	return true;
+}
+
+
 } } // namespace Poco::WebWidgets

WebWidgets/src/TextFieldCell.cpp

@@ -85,4 +85,15 @@ void TextFieldCell::handleForm(const std::string& field, const std::string& valu
 }
 
 
+bool TextFieldCell::serializeJSON(std::ostream& out, const std::string& name)
+{
+	out << name;
+	if (this->hasValue())
+	{
+		out << ":'" << getFormatter()->format(getValue()) << "'";
+	}
+	return true;
+}
+
+
 } } // namespace Poco::WebWidgets

WebWidgets/src/TimeFieldCell.cpp

@@ -77,4 +77,15 @@ void TimeFieldCell::setFormat(TimeField::Format fmt)
 }
 
 
+
+bool TimeFieldCell::serializeJSON(std::ostream& out, const std::string& name)
+{
+	out << name;
+	if (this->hasValue())
+	{
+		out << ":'" << getFormatter()->format(getValue()) << "'";
+	}
+	return true;
+}
+
 } } // namespace Poco::WebWidgets

WebWidgets/src/ToggleButtonCell.cpp

@@ -85,4 +85,16 @@ void ToggleButtonCell::setChecked(bool checked)
 	}
 }
 
+
+bool ToggleButtonCell::serializeJSON(std::ostream& out, const std::string& name)
+{
+	//FIXME: this is extjs specific
+	out << name << ":";
+	if (isChecked())
+		out << "'on'";
+	else
+		out << "'off'";
+	return true;
+}
+
 } } // namespace Poco::WebWidgets

WebWidgets/src/WebApplication.cpp

@@ -113,20 +113,19 @@ void WebApplication::beginForm(const Form& form)
 	if (!_forms.empty())
 		throw WebWidgetsException("nested forms not allowed");
 	_forms.push(form.id());
-	_formMap.insert(std::make_pair(form.id(), RequestProcessorMap()));
+	_formMap.insert(std::make_pair(form.id(), const_cast<Form*>(&form)));
 }
-		
+
 
 void WebApplication::registerFormProcessor(const std::string& fieldName, RequestProcessor* pProc)
 {
-	// per default we register everyting that has a name as form processor
+	// per default we register everything that has a name as form processor
 	if (!_forms.empty())
 	{
 		FormMap::iterator itForm = _formMap.find(_forms.top());
 		poco_assert (itForm != _formMap.end());
-		std::pair<RequestProcessorMap::iterator, bool> res = itForm->second.insert(std::make_pair(fieldName, pProc));
-		if (!res.second)
-			res.first->second = pProc;
+		
+		itForm->second->registerFormProcessor(fieldName, pProc);
 	}
 }
 
@@ -137,10 +136,7 @@ RequestProcessor* WebApplication::getFormProcessor(Renderable::ID formId, const
 	if (itForm == _formMap.end())
 		return 0;
 		
-	RequestProcessorMap::iterator it = itForm->second.find(fieldName);
-	if (it == itForm->second.end())
-		return 0;
-	return it->second;
+	return itForm->second->getFormProcessor(fieldName);
 }
 
 
@@ -184,27 +180,8 @@ void WebApplication::handleForm(const Poco::Net::HTMLForm& form)
 	FormMap::iterator itForm = _formMap.find(formID);
 	if (itForm == _formMap.end())
 		throw Poco::NotFoundException("unknown form id");
-		
-	Poco::Net::NameValueCollection::ConstIterator it = form.begin();	
-	RequestProcessorMap& processors = itForm->second;
-	for (;it != form.end(); ++it)
-	{
-		const std::string& key = it->first;
-		RequestProcessorMap::iterator itR = processors.find(key);
-		if (itR != processors.end())
-		{
-			itR->second->handleForm(key, it->second);
-			processors.erase(itR);
-		}
-	}
-	//those that are not included are either deselected or empty
-	RequestProcessorMap::iterator itR = processors.begin();
-	std::string empty;
-	for (; itR != processors.end(); ++itR)
-	{
-		itR->second->handleForm(itR->first, empty);
-	}
-	processors.clear();
+	
+	itForm->second->handleForm(form);
 }
 
 
@@ -219,8 +196,7 @@ void WebApplication::notifySubmitButton(Renderable::ID id)
 	SubmitButton* pSubmit = dynamic_cast<SubmitButton*>(pOwner);
 	if (pSubmit)
 	{
-		Button::ButtonEvent clickedEvent(pSubmit);
-		pSubmit->buttonClicked.notify(pSubmit, clickedEvent);
+		pSubmit->afterSubmit.notify(pSubmit, pSubmit);
 	}
 }