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added nsIWebShell::SetDocument, a new interface for loading a pre-fabricated content model

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into a webshell synchronously.
This has NOT yet been reviewed, and is not yet used anywhere in the system.
I *will* get a formal code review before enabling it's use.  However, I want to get the code into
the tree because keeping my tree in synch is becoming a burden.


git-svn-id: svn://10.0.0.236/trunk@53269 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
buster%netscape.com
1999-11-11 22:32:13 +00:00
parent c3c5415b15
commit 09ff79c694
3 changed files with 225 additions and 2 deletions
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109
mozilla/docshell/base/nsWebShell.cpp
View File

@@ -69,6 +69,7 @@
#include "nsIDOMHTMLDocument.h"
#include "nsLayoutCID.h"
#include "nsIDOMRange.h"
#include "nsIDOMDOcument.h"
#include "nsTimer.h"
#include "nsILocaleService.h"
@@ -229,6 +230,7 @@ public:
// Document load api's
NS_IMETHOD GetDocumentLoader(nsIDocumentLoader*& aResult);
NS_IMETHOD SetDocument(nsIDOMDocument *aDoc, nsIDOMElement *aRootNode);
NS_IMETHOD LoadURL(const PRUnichar *aURLSpec,
nsIInputStream* aPostDataStream=nsnull,
PRBool aModifyHistory=PR_TRUE,
@@ -1902,6 +1904,112 @@ static void convertFileToURL(const nsString &aIn, nsString &aOut)
}
}
NS_IMETHODIMP
nsWebShell::SetDocument(nsIDOMDocument *aDOMDoc, nsIDOMElement *aRootNode)
{
// The tricky part is bypassing the normal load process and just putting a document into
// the webshell. This is particularly nasty, since webshells don't normally even know
// about their documents
// (1) Create a document viewer
nsCOMPtr<nsIContentViewer> documentViewer;
nsCOMPtr<nsIDocumentLoaderFactory> docFactory;
static NS_DEFINE_CID(kLayoutDocumentLoaderFactoryCID, NS_LAYOUT_DOCUMENT_LOADER_FACTORY_CID);
NS_ENSURE_SUCCESS(nsComponentManager::CreateInstance(kLayoutDocumentLoaderFactoryCID, nsnull,
nsIDocumentLoaderFactory::GetIID(),
(void**)getter_AddRefs(docFactory)),
NS_ERROR_FAILURE);
nsCOMPtr<nsIDocument> doc = do_QueryInterface(aDOMDoc);
if (!doc) { return NS_ERROR_NULL_POINTER; }
NS_ENSURE_SUCCESS(docFactory->CreateInstanceForDocument(this,
doc,
"view",
getter_AddRefs(documentViewer)),
NS_ERROR_FAILURE);
// (2) Feed the webshell to the content viewer
NS_ENSURE_SUCCESS(documentViewer->SetContainer(this), NS_ERROR_FAILURE);
// (3) Tell the content viewer container to embed the content viewer.
// (This step causes everything to be set up for an initial flow.)
NS_ENSURE_SUCCESS(Embed(documentViewer, "view", nsnull), NS_ERROR_FAILURE);
// XXX: It would be great to get rid of this dummy channel!
const nsAutoString uriString = "about:blank";
nsCOMPtr<nsIURI> uri;
NS_ENSURE_SUCCESS(NS_NewURI(getter_AddRefs(uri), uriString), NS_ERROR_FAILURE);
if (!uri) { return NS_ERROR_OUT_OF_MEMORY; }
nsCOMPtr<nsIChannel> dummyChannel;
NS_ENSURE_SUCCESS(NS_OpenURI(getter_AddRefs(dummyChannel), uri, nsnull), NS_ERROR_FAILURE);
// (4) fire start document load notification
nsIStreamListener* outStreamListener=nsnull; // a valid pointer is required for the returned stream listener
NS_ENSURE_SUCCESS(doc->StartDocumentLoad("view", dummyChannel, nsnull, this, &outStreamListener),
NS_ERROR_FAILURE);
NS_IF_RELEASE(outStreamListener);
NS_ENSURE_SUCCESS(OnStartDocumentLoad(mDocLoader, uri, "load"), NS_ERROR_FAILURE);
// (5) hook up the document and its content
nsCOMPtr<nsIContent> rootContent = do_QueryInterface(aRootNode);
if (!doc) { return NS_ERROR_OUT_OF_MEMORY; }
NS_ENSURE_SUCCESS(rootContent->SetDocument(doc, PR_FALSE), NS_ERROR_FAILURE);
doc->SetRootContent(rootContent);
// (6) reflow the document
SetScrolling(-1, PR_FALSE);
PRInt32 i;
PRInt32 ns = doc->GetNumberOfShells();
for (i = 0; i < ns; i++)
{
nsCOMPtr<nsIPresShell> shell(dont_AddRef(doc->GetShellAt(i)));
if (shell)
{
// Make shell an observer for next time
NS_ENSURE_SUCCESS(shell->BeginObservingDocument(), NS_ERROR_FAILURE);
// Resize-reflow this time
nsCOMPtr<nsIDocumentViewer> docViewer = do_QueryInterface(documentViewer);
if (!docViewer) { return NS_ERROR_OUT_OF_MEMORY; }
nsCOMPtr<nsIPresContext> presContext;
NS_ENSURE_SUCCESS(docViewer->GetPresContext(*(getter_AddRefs(presContext))), NS_ERROR_FAILURE);
if (!presContext) { return NS_ERROR_OUT_OF_MEMORY; }
float p2t;
presContext->GetScaledPixelsToTwips(&p2t);
nsRect r;
GetBounds(r.x, r.y, r.width, r.height);
NS_ENSURE_SUCCESS(shell->InitialReflow(NSToCoordRound(r.width * p2t), NSToCoordRound(r.height * p2t)), NS_ERROR_FAILURE);
// Now trigger a refresh
nsCOMPtr<nsIViewManager> vm;
NS_ENSURE_SUCCESS(shell->GetViewManager(getter_AddRefs(vm)), NS_ERROR_FAILURE);
if (vm)
{
PRBool enabled;
documentViewer->GetEnableRendering(&enabled);
if (enabled) {
vm->EnableRefresh();
}
NS_ENSURE_SUCCESS(vm->SetWindowDimensions(NSToCoordRound(r.width * p2t),
NSToCoordRound(r.height * p2t)),
NS_ERROR_FAILURE);
}
}
}
// (7) fire end document load notification
mProcessedEndDocumentLoad = PR_FALSE;
nsresult rv = NS_OK;
NS_ENSURE_SUCCESS(OnEndDocumentLoad(mDocLoader, dummyChannel, rv, this), NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(rv, NS_ERROR_FAILURE); // test the resulting out-param separately
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::LoadURL(const PRUnichar *aURLSpec,
nsIInputStream* aPostDataStream,
@@ -2335,7 +2443,6 @@ nsWebShell::LoadURL(const PRUnichar *aURLSpec,
ret = shist->Add(spec, this);
}
nsCOMPtr<nsIWebShell> parent;
nsresult res = GetParent(*getter_AddRefs(parent));
nsAutoString urlstr;