NS_IMETHODIMP
nsContentDLF::CreateBlankDocument(nsILoadGroup *aLoadGroup,
nsIPrincipal* aPrincipal,
nsIDocument **aDocument)
{
*aDocument = nullptr;
nsresult rv = NS_ERROR_FAILURE;
// create a new blank HTML document
nsCOMPtr<nsIDocument> blankDoc(do_CreateInstance(kHTMLDocumentCID));
if (blankDoc) {
// initialize
nsCOMPtr<nsIURI> uri;
NS_NewURI(getter_AddRefs(uri), NS_LITERAL_CSTRING("about:blank"));
if (uri) {
blankDoc->ResetToURI(uri, aLoadGroup, aPrincipal);
rv = NS_OK;
}
}
// add some simple content structure
if (NS_SUCCEEDED(rv)) {
rv = NS_ERROR_FAILURE;
nsNodeInfoManager *nim = blankDoc->NodeInfoManager();
nsCOMPtr<nsINodeInfo> htmlNodeInfo;
// generate an html html element
htmlNodeInfo = nim->GetNodeInfo(nsGkAtoms::html, 0, kNameSpaceID_XHTML,
nsIDOMNode::ELEMENT_NODE);
nsCOMPtr<nsIContent> htmlElement =
NS_NewHTMLHtmlElement(htmlNodeInfo.forget());
// generate an html head element
htmlNodeInfo = nim->GetNodeInfo(nsGkAtoms::head, 0, kNameSpaceID_XHTML,
nsIDOMNode::ELEMENT_NODE);
nsCOMPtr<nsIContent> headElement =
NS_NewHTMLHeadElement(htmlNodeInfo.forget());
// generate an html body elemment
htmlNodeInfo = nim->GetNodeInfo(nsGkAtoms::body, 0, kNameSpaceID_XHTML,
nsIDOMNode::ELEMENT_NODE);
nsCOMPtr<nsIContent> bodyElement =
NS_NewHTMLBodyElement(htmlNodeInfo.forget());
// blat in the structure
if (htmlElement && headElement && bodyElement) {
NS_ASSERTION(blankDoc->GetChildCount() == 0,
"Shouldn't have children");
rv = blankDoc->AppendChildTo(htmlElement, false);
if (NS_SUCCEEDED(rv)) {
rv = htmlElement->AppendChildTo(headElement, false);
if (NS_SUCCEEDED(rv)) {
// XXXbz Why not notifying here?
htmlElement->AppendChildTo(bodyElement, false);
}
}
}
}
// add a nice bow
if (NS_SUCCEEDED(rv)) {
blankDoc->SetDocumentCharacterSetSource(kCharsetFromDocTypeDefault);
blankDoc->SetDocumentCharacterSet(NS_LITERAL_CSTRING("UTF-8"));
*aDocument = blankDoc;
NS_ADDREF(*aDocument);
}
return rv;
}
nsresult
MediaDocument::CreateSyntheticDocument()
{
// Synthesize an empty html document
nsresult rv;
nsCOMPtr<nsINodeInfo> nodeInfo;
nodeInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::html, nsnull,
kNameSpaceID_XHTML,
nsIDOMNode::ELEMENT_NODE);
NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);
nsRefPtr<nsGenericHTMLElement> root = NS_NewHTMLHtmlElement(nodeInfo.forget());
if (!root) {
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ASSERTION(GetChildCount() == 0, "Shouldn't have any kids");
rv = AppendChildTo(root, PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
nodeInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::head, nsnull,
kNameSpaceID_XHTML,
nsIDOMNode::ELEMENT_NODE);
NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);
// Create a <head> so our title has somewhere to live
nsRefPtr<nsGenericHTMLElement> head = NS_NewHTMLHeadElement(nodeInfo.forget());
if (!head) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsCOMPtr<nsINodeInfo> nodeInfoMeta;
nodeInfoMeta = mNodeInfoManager->GetNodeInfo(nsGkAtoms::meta, nsnull,
kNameSpaceID_XHTML,
nsIDOMNode::ELEMENT_NODE);
NS_ENSURE_TRUE(nodeInfoMeta, NS_ERROR_OUT_OF_MEMORY);
nsRefPtr<nsGenericHTMLElement> metaContent = NS_NewHTMLMetaElement(nodeInfoMeta.forget());
if (!metaContent) {
return NS_ERROR_OUT_OF_MEMORY;
}
metaContent->SetAttr(kNameSpaceID_None, nsGkAtoms::name,
NS_LITERAL_STRING("viewport"),
PR_TRUE);
metaContent->SetAttr(kNameSpaceID_None, nsGkAtoms::content,
NS_LITERAL_STRING("width=device-width; height=device-height;"),
PR_TRUE);
head->AppendChildTo(metaContent, PR_FALSE);
root->AppendChildTo(head, PR_FALSE);
nodeInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::body, nsnull,
kNameSpaceID_XHTML,
nsIDOMNode::ELEMENT_NODE);
NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);
nsRefPtr<nsGenericHTMLElement> body = NS_NewHTMLBodyElement(nodeInfo.forget());
if (!body) {
return NS_ERROR_OUT_OF_MEMORY;
}
root->AppendChildTo(body, PR_FALSE);
return NS_OK;
}
