Merges the two different page serializers

Source/core/page/PageSerializer.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 36 matching lines @@
 #include "core/dom/Text.h"
 #include "core/editing/MarkupAccumulator.h"
 #include "core/fetch/FontResource.h"
 #include "core/fetch/ImageResource.h"
 #include "core/frame/Frame.h"
 #include "core/html/HTMLFrameOwnerElement.h"
 #include "core/html/HTMLImageElement.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/html/HTMLLinkElement.h"
 #include "core/html/HTMLStyleElement.h"
+#include "core/html/ImageDocument.h"
 #include "core/html/parser/HTMLParserIdioms.h"
 #include "core/page/Page.h"
 #include "core/rendering/RenderImage.h"
 #include "core/rendering/style/StyleFetchedImage.h"
 #include "core/rendering/style/StyleImage.h"
 #include "platform/SerializedResource.h"
 #include "platform/graphics/Image.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/TextEncoding.h"
@@ skipping 31 matching lines @@
     // FIXME: We should support all frame owners including applets.
     return frameOwner.hasTagName(HTMLNames::objectTag) ? HTMLNames::dataAttr : HTMLNames::srcAttr;
 }
 
 class SerializerMarkupAccumulator : public WebCore::MarkupAccumulator {
 public:
     SerializerMarkupAccumulator(PageSerializer*, Document*, Vector<Node*>*);
     virtual ~SerializerMarkupAccumulator();
 
 protected:
-    virtual void appendText(StringBuilder& out, Text*);
-    virtual void appendElement(StringBuilder& out, Element*, Namespaces*);
-    virtual void appendCustomAttributes(StringBuilder& out, Element*, Namespaces*);
-    virtual void appendEndTag(Node*);
+    virtual void appendText(StringBuilder&, Text*) OVERRIDE;
+    virtual void appendElement(StringBuilder&, Element*, Namespaces*) OVERRIDE;
+    virtual void appendCustomAttributes(StringBuilder&, Element*, Namespaces*) OVERRIDE;
+    virtual void appendEndTag(Node*) OVERRIDE;
 
-private:
     PageSerializer* m_serializer;
     Document* m_document;
 };
 
 SerializerMarkupAccumulator::SerializerMarkupAccumulator(PageSerializer* serializer, Document* document, Vector<Node*>* nodes)
     : MarkupAccumulator(nodes, ResolveAllURLs)
     , m_serializer(serializer)
     , m_document(document)
 {
 }
 
 SerializerMarkupAccumulator::~SerializerMarkupAccumulator()
 {
 }
 
-void SerializerMarkupAccumulator::appendText(StringBuilder& out, Text* text)
+void SerializerMarkupAccumulator::appendText(StringBuilder& result, Text* text)
 {
     Element* parent = text->parentElement();
     if (parent && !shouldIgnoreElement(parent))
-        MarkupAccumulator::appendText(out, text);
+        MarkupAccumulator::appendText(result, text);
 }
 
-void SerializerMarkupAccumulator::appendElement(StringBuilder& out, Element* element, Namespaces* namespaces)
+void SerializerMarkupAccumulator::appendElement(StringBuilder& result, Element* element, Namespaces* namespaces)
 {
     if (!shouldIgnoreElement(element))
-        MarkupAccumulator::appendElement(out, element, namespaces);
+        MarkupAccumulator::appendElement(result, element, namespaces);
 
+    // FIXME: Refactor MarkupAccumulator so it is easier to append an element like this, without special cases for XHTML
     if (element->hasTagName(HTMLNames::headTag)) {
-        out.append("<meta charset=\"");
-        out.append(m_document->charset());
-        out.append("\">");
+        result.appendLiteral("<meta http-equiv=\"Content-Type\" content=\"");
+        result.append(m_document->suggestedMIMEType());
+        result.appendLiteral("; charset=");
+        result.append(m_document->charset());
+        if (m_document->isXHTMLDocument())
+            result.appendLiteral("\" />");
+        else
+            result.appendLiteral("\">");
     }
 
     // FIXME: For object (plugins) tags and video tag we could replace them by an image of their current contents.
 }
 
-void SerializerMarkupAccumulator::appendCustomAttributes(StringBuilder& out, Element* element, Namespaces* namespaces)
+void SerializerMarkupAccumulator::appendCustomAttributes(StringBuilder& result, Element* element, Namespaces* namespaces)
 {
     if (!element->isFrameOwnerElement())
         return;
 
     HTMLFrameOwnerElement* frameOwner = toHTMLFrameOwnerElement(element);
     Frame* frame = frameOwner->contentFrame();
     if (!frame)
         return;
 
     KURL url = frame->document()->url();
     if (url.isValid() && !url.isBlankURL())
         return;
 
     // We need to give a fake location to blank frames so they can be referenced by the serialized frame.
     url = m_serializer->urlForBlankFrame(frame);
-    appendAttribute(out, element, Attribute(frameOwnerURLAttributeName(*frameOwner), url.string()), namespaces);
+    appendAttribute(result, element, Attribute(frameOwnerURLAttributeName(*frameOwner), url.string()), namespaces);
 }
 
 void SerializerMarkupAccumulator::appendEndTag(Node* node)
 {
     if (node->isElementNode() && !shouldIgnoreElement(toElement(node)))
         MarkupAccumulator::appendEndTag(node);
 }
 
-PageSerializer::PageSerializer(Vector<SerializedResource>* resources)
+class LinkChangeSerializerMarkupAccumulator : public SerializerMarkupAccumulator {
+public:
+    LinkChangeSerializerMarkupAccumulator(PageSerializer*, Document*, Vector<Node*>*, LinkLocalPathMap*, String);
+
+protected:
+    virtual void appendElement(StringBuilder&, Element*, Namespaces*) OVERRIDE;
+    virtual void appendAttribute(StringBuilder&, Element*, const Attribute&, Namespaces*) OVERRIDE;
+
+private:
+    // m_replaceLinks include all pair of local resource path and corresponding original link.
+    LinkLocalPathMap* m_replaceLinks;
+    String m_directoryName;
+};
+
+LinkChangeSerializerMarkupAccumulator::LinkChangeSerializerMarkupAccumulator(PageSerializer* serializer, Document* document, Vector<Node*>* nodes, LinkLocalPathMap* links, String directoryName)
+    : SerializerMarkupAccumulator(serializer, document, nodes)
+    , m_replaceLinks(links)
+    , m_directoryName(directoryName)
+{
+}
+
+void LinkChangeSerializerMarkupAccumulator::appendElement(StringBuilder& result, Element* element, Namespaces* namespaces)
+{
+    // FIXME: We could move the uncommenting to appendOpenTag and appendCloseTag, or just remove it
+    if (element->hasTagName(HTMLNames::baseTag)) {
+        // Comment the BASE tag when serializing dom.
+        result.append("<!--");
+    } else if (element->hasTagName(HTMLNames::htmlTag)) {
+        // Add MOTW (Mark of the Web) declaration before html tag.
+        // See http://msdn2.microsoft.com/en-us/library/ms537628(VS.85).aspx.
+        result.append(String::format("\n<!-- saved from url=(%04d)%s -->\n",
+            static_cast<int>(m_document->url().string().utf8().length()),
+            m_document->url().string().utf8().data()));
+    }
+
+    SerializerMarkupAccumulator::appendElement(result, element, namespaces);
+
+    if (element->hasTagName(HTMLNames::baseTag)) {
+        // Comment the BASE tag when serializing dom.
+        result.appendLiteral("-->");
+
+        // FIXME: Refactor MarkupAccumulator so it is easier to append an element like this, without special cases for XHTML
+        // Append a new base tag declaration.
+        result.appendLiteral("<base href=\".\"");
+        if (!m_document->baseTarget().isEmpty()) {
+            result.appendLiteral(" target=\"");
+            result.append(m_document->baseTarget());
+            result.append('"');
+        }
+        if (m_document->isXHTMLDocument())
+            result.appendLiteral(" />");
+        else
+            result.appendLiteral(">");
+    }
+}
+void LinkChangeSerializerMarkupAccumulator::appendAttribute(StringBuilder& result, Element* element, const Attribute& attribute, Namespaces* namespaces)
+{
+    if (m_replaceLinks && element->isURLAttribute(attribute) && !element->isJavaScriptURLAttribute(attribute)) {
+
+        String completeURL = m_document->completeURL(attribute.value());
+
+        if (m_replaceLinks->contains(completeURL)) {
+            // FIXME: Refactor MarkupAccumulator so it is easier to append an attribute like this.
+            result.append(' ');
+            result.append(attribute.name().toString());
+            result.appendLiteral("=\"");
+            if (!m_directoryName.isEmpty()) {
+                result.appendLiteral("./");
+                result.append(m_directoryName);
+                result.append('/');
+            }
+            result.append(m_replaceLinks->get(completeURL));
+            result.appendLiteral("\"");
+            return;
+        }
+    }
+    MarkupAccumulator::appendAttribute(result, element, attribute, namespaces);
+}
+
+PageSerializer::PageSerializer(Vector<SerializedResource>* resources, LinkLocalPathMap* urls, String directory)
     : m_resources(resources)
+    , m_URLs(urls)
+    , m_directory(directory)
     , m_blankFrameCounter(0)
 {
 }
 
 void PageSerializer::serialize(Page* page)
 {
     serializeFrame(page->mainFrame());
 }
 
 void PageSerializer::serializeFrame(Frame* frame)
 {
     Document* document = frame->document();
     KURL url = document->url();
     if (!url.isValid() || url.isBlankURL()) {
         // For blank frames we generate a fake URL so they can be referenced by their containing frame.
         url = urlForBlankFrame(frame);
     }
 
     if (m_resourceURLs.contains(url)) {
         // FIXME: We could have 2 frame with the same URL but which were dynamically changed and have now
         // different content. So we should serialize both and somehow rename the frame src in the containing
         // frame. Arg!
         return;
     }
 
+    // If frame is an image document, add the image and don't continue
+    if (document->isImageDocument()) {
+        ImageDocument* imageDocument = toImageDocument(document);
+        addImageToResources(imageDocument->cachedImage(), imageDocument->imageElement()->renderer(), url);
+        return;
+    }
+
     Vector<Node*> nodes;
-    SerializerMarkupAccumulator accumulator(this, document, &nodes);
+    OwnPtr<SerializerMarkupAccumulator> accumulator;
+    if (m_URLs)
+        accumulator = adoptPtr(new LinkChangeSerializerMarkupAccumulator(this, document, &nodes, m_URLs, m_directory));
+    else
+        accumulator = adoptPtr(new SerializerMarkupAccumulator(this, document, &nodes));
+    String text = accumulator->serializeNodes(document, IncludeNode);
     WTF::TextEncoding textEncoding(document->charset());
-    CString data;
-    if (!textEncoding.isValid()) {
-        // FIXME: iframes used as images trigger this. We should deal with them correctly.
-        return;
-    }
-    String text = accumulator.serializeNodes(document, IncludeNode);
     CString frameHTML = textEncoding.normalizeAndEncode(text, WTF::EntitiesForUnencodables);
     m_resources->append(SerializedResource(url, document->suggestedMIMEType(), SharedBuffer::create(frameHTML.data(), frameHTML.length())));
     m_resourceURLs.add(url);
 
     for (Vector<Node*>::iterator iter = nodes.begin(); iter != nodes.end(); ++iter) {
         Node* node = *iter;
         if (!node->isElementNode())
             continue;
 
         Element* element = toElement(node);
         // We have to process in-line style as it might contain some resources (typically background images).
-        if (element->isStyledElement())
+        if (element->isStyledElement()) {
             retrieveResourcesForProperties(element->inlineStyle(), document);
+            retrieveResourcesForProperties(element->presentationAttributeStyle(), document);
+        }
 
         if (element->hasTagName(HTMLNames::imgTag)) {
             HTMLImageElement* imageElement = toHTMLImageElement(element);
             KURL url = document->completeURL(imageElement->getAttribute(HTMLNames::srcAttr));
             ImageResource* cachedImage = imageElement->cachedImage();
             addImageToResources(cachedImage, imageElement->renderer(), url);
         } else if (element->hasTagName(HTMLNames::inputTag)) {
             HTMLInputElement* inputElement = toHTMLInputElement(element);
             if (inputElement->isImageButton() && inputElement->hasImageLoader()) {
                 KURL url = inputElement->src();
@@ skipping 70 matching lines @@
     String mimeType = resource->response().mimeType();
     m_resources->append(SerializedResource(url, mimeType, data));
     m_resourceURLs.add(url);
 }
 
 void PageSerializer::addImageToResources(ImageResource* image, RenderObject* imageRenderer, const KURL& url)
 {
     if (!shouldAddURL(url))
         return;
 
-    if (!image || image->image() == Image::nullImage())
+    if (!image || !image->hasImage() || image->image() == Image::nullImage())
         return;
 
     RefPtr<SharedBuffer> data = imageRenderer ? image->imageForRenderer(imageRenderer)->data() : 0;
     if (!data)
         data = image->image()->data();
 
     addToResources(image, data, url);
 }
 
 void PageSerializer::addFontToResources(FontResource* font)
@@ skipping 51 matching lines @@
     if (iter != m_blankFrameURLs.end())
         return iter->value;
     String url = "wyciwyg://frame/" + String::number(m_blankFrameCounter++);
     KURL fakeURL(ParsedURLString, url);
     m_blankFrameURLs.add(frame, fakeURL);
 
     return fakeURL;
 }
 
 }