зеркало из https://github.com/mozilla/pjs.git
(not part of the seamonkey build)
define and implement nsDocumentOpenInfo. Implement uri loader::OpenURI. This is the first pass at my implementation it isn't complete and it doesn't use the registry for getting protocol handlers and content handlers yet...but it's a start
This commit is contained in:
mscott%netscape.com
Родитель
af661431f1
Коммит
8824e33e62
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@ -17,10 +17,135 @@
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*/
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#include "nsURILoader.h"
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#include "nsIURIContentListener.h"
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#include "nsILoadGroup.h"
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#include "nsIIOService.h"
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#include "nsIServiceManager.h"
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#include "nsIStreamListener.h"
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#include "nsIChannel.h"
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#include "nsVoidArray.h"
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#include "nsXPIDLString.h"
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#include "nsString.h"
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static NS_DEFINE_CID(kIOServiceCID, NS_IOSERVICE_CID);
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static NS_DEFINE_CID(kURILoaderCID, NS_URI_LOADER_CID);
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/*
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* The nsDocumentOpenInfo contains the state required when a single document
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* is being opened in order to discover the content type... Each instance remains alive until its target URL has
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* been loaded (or aborted).
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*
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*/
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class nsDocumentOpenInfo : public nsIStreamObserver
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{
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public:
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nsDocumentOpenInfo();
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nsresult Init(nsIURIContentListener * aContentListener);
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NS_DECL_ISUPPORTS
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nsresult Open(nsIURI *aURL,
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const char * aCommand,
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const char * aWindowTarget,
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nsIEventSinkGetter * aEventSinkGetter,
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nsILoadGroup* aLoadGroup,
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nsISupports * aContext,
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nsIURI * aReferringURI);
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// nsIStreamObserver methods:
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NS_DECL_NSISTREAMOBSERVER
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// nsIStreamListener methods:
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// NS_DECL_NSISTREAMLISTENER
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protected:
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virtual ~nsDocumentOpenInfo();
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protected:
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nsCOMPtr<nsIURIContentListener> m_contentListener;
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nsCOMPtr<nsIChannel> m_channel;
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nsCString m_command;
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nsCString m_windowTarget;
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};
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NS_IMPL_ISUPPORTS1(nsDocumentOpenInfo, nsIStreamObserver);
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nsDocumentOpenInfo::nsDocumentOpenInfo()
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{
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NS_INIT_ISUPPORTS();
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}
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nsDocumentOpenInfo::~nsDocumentOpenInfo()
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{
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}
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nsresult nsDocumentOpenInfo::Init(nsIURIContentListener * aContentListener)
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{
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m_contentListener = aContentListener;
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return NS_OK;
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}
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nsresult nsDocumentOpenInfo::Open(nsIURI * aURI, const char * aCommand,
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const char * aWindowTarget,
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nsIEventSinkGetter * aEventSinkGetter,
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nsILoadGroup* aLoadGroup,
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nsISupports * aContext,
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nsIURI * aReferringURI)
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{
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// this method is not complete!!! Eventually, we should first go
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// to the content listener and ask them for a protocol handler...
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// if they don't give us one, we need to go to the registry and get
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// the preferred protocol handler.
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// But for now, I'm going to let necko do the work for us....
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// store any local state
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m_command = aCommand;
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m_windowTarget = aWindowTarget;
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nsresult rv = NS_OK;
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NS_WITH_SERVICE(nsIIOService, pNetService, kIOServiceCID, &rv);
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if (NS_SUCCEEDED(rv))
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{
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nsCOMPtr<nsIChannel> m_channel;
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rv = pNetService->NewChannelFromURI(aCommand, aURI, aLoadGroup, aEventSinkGetter, aReferringURI, getter_AddRefs(m_channel));
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if (NS_FAILED(rv)) return rv; // uhoh we were unable to get a channel to handle the url!!!
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rv = m_channel->AsyncOpen(this, aContext);
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}
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return rv;
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}
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NS_IMETHODIMP nsDocumentOpenInfo::OnStartRequest(nsIChannel * aChannel, nsISupports * aCtxt)
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{
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nsresult rv = NS_OK;
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nsXPIDLCString aContentType;
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rv = aChannel->GetContentType(getter_Copies(aContentType));
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if (NS_FAILED(rv)) return rv;
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// go to the uri dispatcher and give them our stuff...
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NS_WITH_SERVICE(nsIURILoader, pURILoader, kURILoaderCID, &rv);
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if (NS_SUCCEEDED(rv))
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rv = pURILoader->DispatchContent(aContentType, m_command, m_windowTarget,
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aChannel, aCtxt, m_contentListener);
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return rv;
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}
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NS_IMETHODIMP nsDocumentOpenInfo::OnStopRequest(nsIChannel * aChannel, nsISupports *aCtxt,
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nsresult aStatus, const PRUnichar * errorMsg)
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{
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// what are we going to do if we get a failure code here...that means the open may have failed
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// and we never discovered the content type....so the uri never really was run!!!! uhoh..
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// this method is incomplete until I figure that stuff out.
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return NS_OK;
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}
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nsURILoader::nsURILoader()
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{
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NS_INIT_ISUPPORTS();
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@ -54,10 +179,88 @@ NS_IMETHODIMP nsURILoader::UnRegisterContentListener(nsIURIContentListener * aCo
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}
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NS_IMETHODIMP nsURILoader::OpenURI(nsIURI *aURI, nsIStreamObserver *aStreamObserver,
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nsIURIContentListener *aContentListener, nsISupports *aContext,
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nsIURI *aReferringURI)
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NS_IMETHODIMP nsURILoader::OpenURI(nsIURI *aURI,
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const char * aCommand,
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const char * aWindowTarget,
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nsIEventSinkGetter *aEventSinkGetter,
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nsILoadGroup * aLoadGroup,
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nsISupports *aContext,
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nsIURIContentListener *aContentListener,
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nsIURI *aReferringURI)
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{
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// we need to create a DocumentOpenInfo object which will go ahead and open the url
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// and discover the content type....
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nsresult rv = NS_OK;
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nsDocumentOpenInfo* loader = nsnull;
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if (!aURI) return NS_ERROR_NULL_POINTER;
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NS_NEWXPCOM(loader, nsDocumentOpenInfo);
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if (!loader) return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(loader);
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loader->Init(aContentListener); // Extra Info
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// now instruct the loader to go ahead and open the url
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rv = loader->Open(aURI, aCommand, aWindowTarget, aEventSinkGetter, aLoadGroup, aContext, aReferringURI);
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NS_RELEASE(loader);
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return NS_OK;
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}
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nsresult nsURILoader::DispatchContent(const char * aContentType,
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const char * aCommand,
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const char * aWindowTarget,
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nsIChannel * aChannel,
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nsISupports * aCtxt,
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nsIURIContentListener * aContentListener)
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{
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// okay, now we've discovered the content type. We need to do the following:
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// (1) Give our uri content listener first crack at handling this content type.
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nsresult rv = NS_OK;
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nsCOMPtr<nsIStreamListener> aContentStreamListener;
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PRBool aAbortProcess = PR_FALSE;
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if (aContentListener)
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rv = aContentListener->DoContent(aContentType, aCommand, aWindowTarget,
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aChannel, getter_AddRefs(aContentStreamListener),
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&aAbortProcess);
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// the listener is doing all the work from here...we are done!!!
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if (aAbortProcess) return rv;
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// if we didn't get a content stream listener back...then iterate over our registered
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// stream listeners until we can find one..
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if (!aContentStreamListener)
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{
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PRInt32 i = 0;
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// keep looping until we are told to abort or we get a content listener back
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for(i = 0; i < m_listeners->Count() && !aAbortProcess && !aContentStreamListener; i++)
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{
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aAbortProcess = PR_FALSE;
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//nsIURIContentListener's aren't refcounted.
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nsIURIContentListener * listener =(nsIURIContentListener*)m_listeners->ElementAt(i);
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if (listener)
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rv = listener->DoContent(aContentType, aCommand, aWindowTarget,
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aChannel, getter_AddRefs(aContentStreamListener),
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&aAbortProcess);
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}
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}
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// okay, all registered listeners have had a chance to handle this content...
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// did one of them give us a stream listener back? if so, let's start reading data
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// into it...
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if (aContentStreamListener)
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{
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return aChannel->AsyncRead(0, -1, aCtxt, aContentStreamListener);
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}
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// no registered content listeners to handle this type!!! so go to the register
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// and get a registered nsIContentHandler for our content type. Hand it off
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// to them...
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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