--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/wml/WMLGoElement.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,222 @@
+/**
+ * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+
+#if ENABLE(WML)
+#include "WMLGoElement.h"
+
+#include "Attribute.h"
+#include "FormData.h"
+#include "Frame.h"
+#include "FrameLoader.h"
+#include "HTMLNames.h"
+#include "ResourceRequest.h"
+#include "TextEncoding.h"
+#include "WMLCardElement.h"
+#include "WMLDocument.h"
+#include "WMLNames.h"
+#include "WMLPageState.h"
+#include "WMLPostfieldElement.h"
+#include "WMLTimerElement.h"
+#include "WMLVariables.h"
+#include <wtf/text/CString.h>
+
+namespace WebCore {
+
+using namespace WMLNames;
+
+WMLGoElement::WMLGoElement(const QualifiedName& tagName, Document* doc)
+    : WMLTaskElement(tagName, doc)
+{
+}
+ 
+void WMLGoElement::registerPostfieldElement(WMLPostfieldElement* postfield)
+{
+    ASSERT(m_postfieldElements.find(postfield) == WTF::notFound);
+    m_postfieldElements.append(postfield);
+}
+ 
+void WMLGoElement::deregisterPostfieldElement(WMLPostfieldElement* postfield)
+{
+    size_t position = m_postfieldElements.find(postfield);
+    ASSERT(position != WTF::notFound);
+    m_postfieldElements.remove(position);
+}
+
+void WMLGoElement::parseMappedAttribute(Attribute* attr)
+{
+    if (attr->name() == HTMLNames::methodAttr)
+        m_formDataBuilder.parseMethodType(attr->value());
+    else if (attr->name() == HTMLNames::enctypeAttr)
+        m_formDataBuilder.parseEncodingType(parseValueSubstitutingVariableReferences(attr->value()));
+    else if (attr->name() == HTMLNames::accept_charsetAttr)
+        m_formDataBuilder.setAcceptCharset(parseValueForbiddingVariableReferences(attr->value()));
+    else
+        WMLTaskElement::parseMappedAttribute(attr);
+}
+
+void WMLGoElement::executeTask()
+{
+    ASSERT(document()->isWMLDocument());
+    WMLDocument* document = static_cast<WMLDocument*>(this->document());
+
+    WMLPageState* pageState = wmlPageStateForDocument(document);
+    if (!pageState)
+        return;
+
+    WMLCardElement* card = document->activeCard();
+    if (!card)
+        return;
+
+    Frame* frame = document->frame();
+    if (!frame)
+        return;
+
+    FrameLoader* loader = frame->loader();
+    if (!loader)
+        return;
+
+    String href = getAttribute(HTMLNames::hrefAttr);
+    if (href.isEmpty())
+        return;
+
+    // Substitute variables within target url attribute value
+    KURL url = document->completeURL(substituteVariableReferences(href, document, WMLVariableEscapingEscape));
+    if (url.isEmpty())
+        return;
+
+    storeVariableState(pageState);
+
+    // Stop the timer of the current card if it is active
+    if (WMLTimerElement* eventTimer = card->eventTimer())
+        eventTimer->stop();
+
+    // FIXME: 'newcontext' handling not implemented for external cards
+    bool inSameDeck = document->url().path() == url.path();
+    if (inSameDeck && url.hasFragmentIdentifier()) {
+        if (WMLCardElement* card = WMLCardElement::findNamedCardInDocument(document, url.fragmentIdentifier())) {
+            if (card->isNewContext())
+                pageState->reset();
+        }
+    }
+
+    // Prepare loading the destination url
+    ResourceRequest request(url);
+
+    if (getAttribute(sendrefererAttr) == "true")
+        request.setHTTPReferrer(loader->outgoingReferrer());
+
+    String cacheControl = getAttribute(cache_controlAttr);
+
+    if (m_formDataBuilder.isPostMethod())
+        preparePOSTRequest(request, inSameDeck, cacheControl);
+    else
+        prepareGETRequest(request, url);
+
+    // Set HTTP cache-control header if needed
+    if (!cacheControl.isEmpty()) {
+        request.setHTTPHeaderField("cache-control", cacheControl);
+
+        if (cacheControl == "no-cache")
+            request.setCachePolicy(ReloadIgnoringCacheData);
+    }
+
+    loader->load(request, false);
+}
+
+void WMLGoElement::preparePOSTRequest(ResourceRequest& request, bool inSameDeck, const String& cacheControl)
+{
+    request.setHTTPMethod("POST");
+
+    if (inSameDeck && cacheControl != "no-cache") {
+        request.setCachePolicy(ReturnCacheDataDontLoad);
+        return;
+    }
+
+    RefPtr<FormData> data;
+
+    if (m_formDataBuilder.isMultiPartForm()) { // multipart/form-data
+        Vector<char> boundary = m_formDataBuilder.generateUniqueBoundaryString();
+        data = createFormData(boundary.data());
+        request.setHTTPContentType(m_formDataBuilder.encodingType() + "; boundary=" + boundary.data());
+    } else {
+        // text/plain or application/x-www-form-urlencoded
+        data = createFormData(CString());
+        request.setHTTPContentType(m_formDataBuilder.encodingType());
+    }
+
+    request.setHTTPBody(data.get());
+}
+
+void WMLGoElement::prepareGETRequest(ResourceRequest& request, const KURL& url)
+{
+    request.setHTTPMethod("GET");
+
+    // Eventually display error message?
+    if (m_formDataBuilder.isMultiPartForm())
+        return;
+
+    RefPtr<FormData> data = createFormData(CString());
+
+    KURL remoteURL(url);
+    remoteURL.setQuery(data->flattenToString());
+    request.setURL(remoteURL);
+}
+
+PassRefPtr<FormData> WMLGoElement::createFormData(const CString& boundary)
+{
+    CString key;
+    CString value;
+
+    Vector<char> encodedData;
+    TextEncoding encoding = m_formDataBuilder.dataEncoding(document()).encodingForFormSubmission();
+
+    Vector<WMLPostfieldElement*>::iterator it = m_postfieldElements.begin();
+    Vector<WMLPostfieldElement*>::iterator end = m_postfieldElements.end();
+
+    RefPtr<FormData> result = FormData::create();
+    for (; it != end; ++it) {
+        (*it)->encodeData(encoding, key, value);
+
+        if (m_formDataBuilder.isMultiPartForm()) {
+            Vector<char> header;
+            m_formDataBuilder.beginMultiPartHeader(header, boundary, key);
+            m_formDataBuilder.finishMultiPartHeader(header);
+            result->appendData(header.data(), header.size());
+
+            if (size_t dataSize = value.length())
+                result->appendData(value.data(), dataSize);
+
+            result->appendData("\r\n", 2);
+        } else
+            m_formDataBuilder.addKeyValuePairAsFormData(encodedData, key, value);
+    }
+
+    if (m_formDataBuilder.isMultiPartForm())
+        m_formDataBuilder.addBoundaryToMultiPartHeader(encodedData, boundary, true);
+
+    result->appendData(encodedData.data(), encodedData.size());
+    return result;
+}
+
+}
+
+#endif