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Code Issues Projects Releases Wiki Activity

added support for dynamic code loading

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This commit is contained in:
Peter Schojer
2008-09-15 06:42:10 +00:00
parent 69608ecbe3
commit a981fb3130
17 changed files with 573 additions and 15 deletions
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8
WebWidgets/ExtJS/ExtJS_VS80.vcproj
View File

@@ -245,6 +245,10 @@
RelativePath=".\include\Poco\WebWidgets\ExtJS\DateFieldCellRenderer.h"
>
</File>
<File
RelativePath=".\include\Poco\WebWidgets\ExtJS\DynamicCodeLoaderRenderer.h"
>
</File>
<File
RelativePath=".\include\Poco\WebWidgets\ExtJS\ExtJS.h"
>
@@ -397,6 +401,10 @@
RelativePath=".\src\DateFieldCellRenderer.cpp"
>
</File>
<File
RelativePath=".\src\DynamicCodeLoaderRenderer.cpp"
>
</File>
<File
RelativePath=".\src\FormRenderer.cpp"
>

73
WebWidgets/ExtJS/include/Poco/WebWidgets/ExtJS/DynamicCodeLoaderRenderer.h Normal file
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@@ -0,0 +1,73 @@
//
// DynamicCodeLoaderRenderer.h
//
// $Id: //poco/Main/WebWidgets/ExtJS/include/Poco/WebWidgets/ExtJS/DynamicCodeLoaderRenderer.h#2 $
//
// Library: ExtJS
// Package: Core
// Module: DynamicCodeLoaderRenderer
//
// Definition of the DynamicCodeLoaderRenderer class.
//
// 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.
//
#ifndef ExtJS_DynamicCodeLoaderRenderer_INCLUDED
#define ExtJS_DynamicCodeLoaderRenderer_INCLUDED
#include "Poco/WebWidgets/ExtJS/ExtJS.h"
#include "Poco/WebWidgets/Renderer.h"
namespace Poco {
namespace WebWidgets {
namespace ExtJS {
class ExtJS_API DynamicCodeLoaderRenderer: public Poco::WebWidgets::Renderer
/// DynamicCodeLoaderRenderer renders a vertical Layout
{
public:
DynamicCodeLoaderRenderer();
/// Creates the DynamicCodeLoaderRenderer.
virtual ~DynamicCodeLoaderRenderer();
/// Destroys the DynamicCodeLoaderRenderer.
void renderHead(const Renderable* pRenderable, const RenderContext& context, std::ostream& ostr);
/// Emits code for the page header to the given output stream.
void renderBody(const Renderable* pRenderable, const RenderContext& context, std::ostream& ostr);
/// Emits code for the page body to the given output stream.
};
} } } // namespace Poco::WebWidgets::ExtJS
#endif // ExtJS_DynamicCodeLoaderRenderer_INCLUDED

115
WebWidgets/ExtJS/src/DynamicCodeLoaderRenderer.cpp Normal file
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@@ -0,0 +1,115 @@
//
// DynamicCodeLoaderRenderer.cpp
//
// $Id: //poco/Main/WebWidgets/ExtJS/src/DynamicCodeLoaderRenderer.cpp#2 $
//
// Library: ExtJS
// Package: Core
// Module: DynamicCodeLoaderRenderer
//
// 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/DynamicCodeLoaderRenderer.h"
#include "Poco/WebWidgets/ExtJS/Utility.h"
#include "Poco/WebWidgets/VerticalLayout.h"
#include "Poco/WebWidgets/DynamicCodeLoader.h"
#include "Poco/WebWidgets/RequestHandler.h"
#include "Poco/NumberFormatter.h"
#include <sstream>
namespace Poco {
namespace WebWidgets {
namespace ExtJS {
DynamicCodeLoaderRenderer::DynamicCodeLoaderRenderer()
{
}
DynamicCodeLoaderRenderer::~DynamicCodeLoaderRenderer()
{
}
void DynamicCodeLoaderRenderer::renderHead(const Renderable* pRenderable, const RenderContext& context, std::ostream& str)
{
// we need to render two things:
// - first a load method in the header which loads a js file
// - second, the js file which must be set as code at the DynamicCodeLoader
const DynamicCodeLoader* pLoader = static_cast<const DynamicCodeLoader*>(pRenderable);
poco_assert_dbg (pLoader != 0);
str << "var " << pLoader->loaderFunctionName() << "Loaded = false;" << std::endl;
str << "function " << pLoader->loaderFunctionName() << "(){" << std::endl;
str << "if ("<< pLoader->loaderFunctionName() << "Loaded) return;" << std::endl;
str << pLoader->loaderFunctionName() << "Loaded = true;" << std::endl;
str << "Ext.Ajax.request({" << std::endl;
str << "url: '" << pLoader->uri().toString() << "/;" << RequestHandler::KEY_EVID << "=" << DynamicCodeLoader::EV_LOAD << "&";
str << RequestHandler::KEY_ID << "=" << pLoader->id() << "'," << std::endl;
str << "success: function(response){" << std::endl;
str << "loadScriptDynamically('script" << pLoader->id() << "', response);" << std::endl;
str << "var parent = Ext.getCmp('" << pLoader->parent()->id() << "');" << std::endl;
str << "var child = " << pLoader->functionName() << "();" << std::endl;
str << "parent.add(child);" << std::endl;
if (!pLoader->getSuccessCall().empty())
str << pLoader->getSuccessCall() << ";" << std::endl;
str << "}";
if (!pLoader->getErrorCall().empty())
str << ",failure:" << pLoader->getErrorCall() << std::endl;
str << "});" << std::endl;
str << "}" << std::endl;
DynamicCodeLoader* pL = const_cast<DynamicCodeLoader*>(pLoader);
WebApplication::instance().registerAjaxProcessor(Poco::NumberFormatter::format(pLoader->id()), pL);
// the js file: only do when not already set
if (!pLoader->getViewCode().empty())
return;
std::ostringstream out;
View::Ptr pView = pLoader->view();
out << "function " << pLoader->functionName() << "(){";
out << "return ";
pView->renderHead(context, out);
out << ";"; // close return
out << "}";
pL->setViewCode(out.str());
}
void DynamicCodeLoaderRenderer::renderBody(const Renderable* pRenderable, const RenderContext& context, std::ostream& ostr)
{
}
} } } // namespace Poco::WebWidgets::ExtJS

23
WebWidgets/ExtJS/src/PageRenderer.cpp
View File

@@ -127,6 +127,29 @@ void PageRenderer::renderHead(const Renderable* pRenderable, const RenderContext
ostr << *itF << std::endl;
}
const std::set<DynamicCodeLoader::Ptr>& dcls = pPage->dynamicCodeLoaders();
if (!dcls.empty())
{
ostr << "function loadScriptDynamically(sId, source){" << std::endl;
ostr << "if (!source) return;" << std::endl;
ostr << "var oHead = document.getElementsByTagName('HEAD').item(0);" << std::endl;
ostr << "var oScript = document.createElement('script');" << std::endl;
ostr << "oScript.language = 'javascript';" << std::endl;
ostr << "oScript.type = 'text/javascript';" << std::endl;
ostr << "oScript.id = sId;" << std::endl;
ostr << "oScript.defer = true;" << std::endl;
ostr << "oScript.text = source.responseText;" << std::endl;
ostr << "oHead.appendChild(oScript);" << std::endl;
ostr << "}" << std::endl;
}
std::set<DynamicCodeLoader::Ptr>::const_iterator itDC = dcls.begin();
for (; itDC != dcls.end(); ++itDC)
{
(*itDC)->renderHead(context, ostr);
}
ostr << "Ext.onReady(function() {";
ostr << "var " << VAR_LOCALTMP << ";"; // tmp variable needed for table renderer
ostr << "Ext.QuickTips.init();";

3
WebWidgets/ExtJS/src/Utility.cpp
View File

@@ -62,6 +62,7 @@
#include "Poco/WebWidgets/ExtJS/TableRenderer.h"
#include "Poco/WebWidgets/ExtJS/ProgressIndicatorRenderer.h"
#include "Poco/WebWidgets/ExtJS/HTMLRenderer.h"
#include "Poco/WebWidgets/ExtJS/DynamicCodeLoaderRenderer.h"
#include "Poco/WebWidgets/Label.h"
#include "Poco/WebWidgets/Page.h"
@@ -77,6 +78,7 @@
#include "Poco/WebWidgets/TextFieldCell.h"
#include "Poco/WebWidgets/TimeFieldCell.h"
#include "Poco/WebWidgets/DateFieldCell.h"
#include "Poco/WebWidgets/DynamicCodeLoader.h"
#include "Poco/WebWidgets/PasswordFieldCell.h"
#include "Poco/WebWidgets/NumberFieldCell.h"
#include "Poco/WebWidgets/ComboBoxCell.h"
@@ -137,6 +139,7 @@ void Utility::initialize(LookAndFeel::Ptr ptr)
ptr->registerRenderer(typeid(Table), new TableRenderer());
ptr->registerRenderer(typeid(ProgressIndicator), new ProgressIndicatorRenderer());
ptr->registerRenderer(typeid(HTML),new HTMLRenderer());
ptr->registerRenderer(typeid(DynamicCodeLoader),new DynamicCodeLoaderRenderer());
}