handled ajaxevents

WebWidgets/WebWidgets_VS80.vcproj

@@ -209,6 +209,10 @@
 			<Filter
 				Name="Header Files"
 				>
+				<File
+					RelativePath=".\include\Poco\WebWidgets\AjaxDelegate.h"
+					>
+				</File>
 				<File
 					RelativePath=".\include\Poco\WebWidgets\Alignment.h"
 					>
@@ -293,6 +297,10 @@
 			<Filter
 				Name="Source Files"
 				>
+				<File
+					RelativePath=".\src\AjaxDelegate.cpp"
+					>
+				</File>
 				<File
 					RelativePath=".\src\Cell.cpp"
 					>

WebWidgets/WebWidgets_VS90.vcproj

@@ -208,6 +208,10 @@
 			<Filter
 				Name="Header Files"
 				>
+				<File
+					RelativePath=".\include\Poco\WebWidgets\AjaxDelegate.h"
+					>
+				</File>
 				<File
 					RelativePath=".\include\Poco\WebWidgets\Alignment.h"
 					>
@@ -292,6 +296,10 @@
 			<Filter
 				Name="Source Files"
 				>
+				<File
+					RelativePath=".\src\AjaxDelegate.cpp"
+					>
+				</File>
 				<File
 					RelativePath=".\src\Cell.cpp"
 					>

WebWidgets/include/Poco/WebWidgets/AjaxDelegate.h

@@ -0,0 +1,158 @@
+//
+// AjaxDelegate.h
+//
+// $Id: //poco/Main/WebWidgets/include/Poco/WebWidgets/AjaxDelegate.h#2 $
+//
+// Library: WebWidgets
+// Package: Core
+// Module:  AjaxDelegate
+//
+// Definition of the AjaxDelegate class.
+//
+// Copyright (c) 2008, 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.
+//
+
+
+#ifndef WebWidgets_AjaxDelegate_INCLUDED
+#define WebWidgets_AjaxDelegate_INCLUDED
+
+
+#include "Poco/WebWidgets/WebWidgets.h"
+#include "Poco/RefCountedObject.h"
+
+
+namespace Poco {
+	namespace Net {
+		class NameValueCollection;
+		class HTTPServerResponse;
+	}
+namespace WebWidgets {
+
+
+class BasicAjaxDelegateImpl;
+
+
+struct AjaxParameters
+{
+	const Poco::Net::NameValueCollection& args;
+	Poco::Net::HTTPServerResponse& response;
+	bool handled;
+	AjaxParameters(const Poco::Net::NameValueCollection& args, Poco::Net::HTTPServerResponse& response);
+};
+
+
+class WebWidgets_API AjaxDelegate
+	/// AjaxDelegate implements a very simple, lightweight delegate mechanism.
+{
+public:
+	AjaxDelegate();
+		/// Creates a AjaxDelegate for void.
+		
+	AjaxDelegate(const AjaxDelegate& delegate);
+		/// Creates a AjaxDelegate by copying another one.
+		
+	AjaxDelegate(BasicAjaxDelegateImpl* pImpl);
+		/// Creates a AjaxDelegate using the given BasicAjaxDelegateImpl.
+				
+	~AjaxDelegate();
+		/// Destroys the AjaxDelegate.
+		
+	void swap(AjaxDelegate& delegate);
+		/// Swaps the AjaxDelegate with another one.
+		
+	AjaxDelegate& operator = (const AjaxDelegate& delegate);
+		/// Assignment operator.
+		
+	void operator () (void* pSender, const Poco::Net::NameValueCollection& args, Poco::Net::HTTPServerResponse& response, bool& handled) const;
+		/// Invokes the delegate.
+		
+	operator void* () const;
+	bool operator ! () const;
+		
+private:
+	BasicAjaxDelegateImpl* _pImpl;
+};
+
+
+class WebWidgets_API BasicAjaxDelegateImpl: public Poco::RefCountedObject
+	/// The common base class for all AjaxDelegateImpl instantiations.
+{
+public:
+	BasicAjaxDelegateImpl();
+		/// Creates the BasicAjaxDelegateImpl.
+	
+	virtual void invoke(void* pSender, AjaxParameters& params) = 0;
+		/// Invokes the delegate.
+	
+protected:
+	~BasicAjaxDelegateImpl();
+		/// Destroys the AjaxDelegate.
+};
+
+
+template <class C>
+class AjaxDelegateImpl: public BasicAjaxDelegateImpl
+{
+public:
+	typedef void (C::*Callback)(void*, AjaxParameters&);
+	
+	AjaxDelegateImpl(C& object, Callback method):
+		/// Creates the AjaxDelegateImpl
+		_pObject(&object),
+		_method(method)
+	{
+	}
+	
+	void invoke(void* pSender, AjaxParameters& params)
+	{
+		(_pObject->*_method)(pSender, params);		
+	}
+	
+protected:
+	~AjaxDelegateImpl()
+	{
+	}
+	
+private:
+	AjaxDelegateImpl();
+	
+	C* _pObject;
+	Callback _method;
+};
+
+
+template <class C>
+AjaxDelegate ajaxDelegate(C& object, void (C::*method)(void*, AjaxParameters&))
+	/// "Constructor" function for a AjaxDelegate.
+{
+	return AjaxDelegate(new AjaxDelegateImpl<C>(object, method));
+}
+
+
+} } // namespace Poco::WebWidgets
+
+
+#endif // WebWidgets_AjaxDelegate_INCLUDED

WebWidgets/include/Poco/WebWidgets/Button.h

@@ -42,6 +42,7 @@
 
 #include "Poco/WebWidgets/Control.h"
 #include "Poco/WebWidgets/Event.h"
+#include "Poco/WebWidgets/AjaxDelegate.h"
 #include "Poco/WebWidgets/JavaScriptEvent.h"
 
 
@@ -59,6 +60,8 @@ public:
 	typedef Poco::AutoPtr<Button> Ptr;
 	typedef Event<Button> ButtonEvent;
 
+	JavaScriptEvent<AjaxParameters> ajaxButtonClicked;
+	
 	JavaScriptEvent<ButtonEvent> buttonClicked;
 
 	Button(const std::string& name);
@@ -70,6 +73,9 @@ public:
 	Button();
 		/// Creates an anonymous Button.
 
+	void fireAjaxButtonClicked(void* pSender, AjaxParameters& params);
+		/// Fires the ajaxButtonClicked event.
+		
 	void fireButtonClicked(void* pSender);
 		/// Fires the buttonClicked event.
 

WebWidgets/include/Poco/WebWidgets/ButtonCell.h

@@ -41,6 +41,7 @@
 
 
 #include "Poco/WebWidgets/Cell.h"
+#include "Poco/WebWidgets/AjaxDelegate.h"
 #include "Poco/WebWidgets/Delegate.h"
 
 
@@ -56,6 +57,8 @@ public:
 
 	static const std::string EV_BUTTONCLICKED;
 	
+	AjaxDelegate ajaxButtonClicked;
+	
 	Delegate buttonClicked;
 
 	ButtonCell(View* pOwner);

WebWidgets/include/Poco/WebWidgets/JavaScriptEvent.h

@@ -43,7 +43,7 @@
 #include "Poco/WebWidgets/WebWidgets.h"
 #include "Poco/WebWidgets/JSDelegate.h"
 #include "Poco/AbstractEvent.h"
-#include "Poco/DefaultStrategy.h"
+#include "Poco/FIFOStrategy.h"
 #include "Poco/AbstractDelegate.h"
 #include "Poco/CompareFunctions.h"
 #include <list>
@@ -63,11 +63,11 @@ enum ServerCallback
 	
 template <class TArgs> 
 class JavaScriptEvent: public Poco::AbstractEvent < 
-	TArgs, Poco::DefaultStrategy<TArgs, Poco::AbstractDelegate<TArgs>, Poco::p_less<Poco::AbstractDelegate<TArgs> > >,
+	TArgs, Poco::FIFOStrategy<TArgs, Poco::AbstractDelegate<TArgs>, Poco::p_less<Poco::AbstractDelegate<TArgs> > >,
 	Poco::AbstractDelegate<TArgs> 
 >
 	/// Event class used to handle JavaScriptEvents. Allows to register two different types
-	/// of delegates. The standard delegates, as known from Poco::BasicEvent and JSDelegates
+	/// of delegates. The standard delegates, as known from Poco::FIFOEvent and JSDelegates
 	/// which will be embedded into the WebPage when the Parser generates the site.
 	/// Per default a server callback happens only when local listeners are registered.
 {

WebWidgets/src/AjaxDelegate.cpp

@@ -0,0 +1,139 @@
+//
+// AjaxDelegate.cpp
+//
+// $Id: //poco/Main/WebWidgets/src/AjaxDelegate.cpp#2 $
+//
+// Library: WebWidgets
+// Package: Core
+// Module:  AjaxDelegate
+//
+// Copyright (c) 2008, 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/AjaxDelegate.h"
+#include "Poco/Net/NameValueCollection.h"
+#include "Poco/Net/HTTPServerResponse.h"
+#include <algorithm>
+
+
+namespace Poco {
+namespace WebWidgets {
+
+
+AjaxParameters::AjaxParameters(const Poco::Net::NameValueCollection& a, Poco::Net::HTTPServerResponse& r):
+	args(a),
+	response(r),
+	handled(false)
+{
+}
+
+
+//
+// AjaxDelegate
+//
+
+
+AjaxDelegate::AjaxDelegate():
+	_pImpl(0)
+{
+}
+
+	
+AjaxDelegate::AjaxDelegate(const AjaxDelegate& delegate):
+	_pImpl(delegate._pImpl)
+{
+	if (_pImpl) 
+		_pImpl->duplicate();
+}
+
+	
+AjaxDelegate::AjaxDelegate(BasicAjaxDelegateImpl* pImpl):
+	_pImpl(pImpl)
+{
+}
+
+			
+AjaxDelegate::~AjaxDelegate()
+{
+	if (_pImpl) 
+		_pImpl->release();
+}
+
+	
+void AjaxDelegate::swap(AjaxDelegate& delegate)
+{
+	std::swap(_pImpl, delegate._pImpl);
+}
+
+	
+AjaxDelegate& AjaxDelegate::operator = (const AjaxDelegate& delegate)
+{
+	AjaxDelegate tmp(delegate);
+	swap(tmp);
+	return *this;
+}
+
+	
+void AjaxDelegate::operator () (void* pSender, const Poco::Net::NameValueCollection& args, Poco::Net::HTTPServerResponse& response, bool& handled) const
+{
+	if (_pImpl) 
+	{
+		AjaxParameters params(args, response);
+		_pImpl->invoke(pSender, params);
+		handled = params.handled;
+	}
+}
+
+
+AjaxDelegate::operator void* () const
+{
+	return _pImpl;
+}
+
+
+bool AjaxDelegate::operator ! () const
+{
+	return _pImpl == 0;
+}
+
+
+//
+// BasicAjaxDelegateImpl
+//
+
+
+BasicAjaxDelegateImpl::BasicAjaxDelegateImpl()
+{
+}
+
+
+BasicAjaxDelegateImpl::~BasicAjaxDelegateImpl()
+{
+}
+
+
+} } // namespace Poco::WebWidgets

WebWidgets/src/Button.cpp

@@ -102,6 +102,7 @@ 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);
 	setCell(pCell);
 }
 
@@ -113,6 +114,12 @@ void Button::init()
 }
 
 
+void Button::fireAjaxButtonClicked(void* pSender, AjaxParameters& params)
+{
+	ajaxButtonClicked(pSender, params);
+}
+
+
 void Button::fireButtonClicked(void* pSender)
 {
 	ButtonEvent clickedEvent(this);

WebWidgets/src/ButtonCell.cpp

@@ -66,7 +66,7 @@ ButtonCell::~ButtonCell()
 
 void ButtonCell::handleForm(const std::string& field, const std::string& value)
 {
-	buttonClicked(this);
+	//buttonClicked(this);
 }
 
 
@@ -75,10 +75,14 @@ void ButtonCell::handleAjaxRequest(const Poco::Net::NameValueCollection& args, P
 	const std::string& ev = args[RequestHandler::KEY_EVID];
 	if (ev == EV_BUTTONCLICKED)
 	{
+		bool handled(false);
+		ajaxButtonClicked(this, args, response, handled);
+		if (!handled)
+			response.send();
 		buttonClicked(this);
 	}
-	
-	response.send();
+	else
+		response.send();
 }
 
 

WebWidgets/src/WebApplication.cpp

@@ -37,6 +37,7 @@
 #include "Poco/WebWidgets/WebApplication.h"
 #include "Poco/WebWidgets/RequestProcessor.h"
 #include "Poco/WebWidgets/SubmitButtonCell.h"
+#include "Poco/WebWidgets/SubmitButton.h"
 #include "Poco/WebWidgets/WebWidgetsException.h"
 #include "Poco/Net/HTMLForm.h"
 #include "Poco/Net/HTTPServerRequest.h"
@@ -213,7 +214,14 @@ void WebApplication::notifySubmitButton(Renderable::ID id)
 	if (it == _submitButtons.end())
 		throw WebWidgetsException("failed to find submitButton with id " + Poco::NumberFormatter::format(id));
 		
-	it->second->buttonClicked(this);
+	View* pOwner = it->second->getOwner();
+	poco_assert (pOwner);
+	SubmitButton* pSubmit = dynamic_cast<SubmitButton*>(pOwner);
+	if (pSubmit)
+	{
+		Button::ButtonEvent clickedEvent(pSubmit);
+		pSubmit->buttonClicked.notify(pSubmit, clickedEvent);
+	}
 }