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The parent content listener now doesn't have to implement every method. It can just implement the ones it wants and return NS_ERROR_NOT_IMPLEMENTED on the others.

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This commit is contained in:
tbogard%aol.net 2000-04-03 00:45:25 +00:00
parent 2cba9d275c
commit 8a9cd7de65
1 changed files with 53 additions and 40 deletions
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93
embedding/browser/webBrowser/nsWBURIContentListener.cpp
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@ -61,9 +61,14 @@ NS_IMETHODIMP nsWBURIContentListener::OnStartURIOpen(nsIURI* aURI,
const char* aWindowTarget, PRBool* aAbortOpen)
{
if(mParentContentListener)
return mParentContentListener->OnStartURIOpen(aURI, aWindowTarget,
{
nsresult rv = mParentContentListener->OnStartURIOpen(aURI, aWindowTarget,
aAbortOpen);
if(NS_ERROR_NOT_IMPLEMENTED != rv)
return rv;
}
return NS_OK;
}
@ -73,10 +78,15 @@ NS_IMETHODIMP nsWBURIContentListener::GetProtocolHandler(nsIURI* aURI,
NS_ENSURE_ARG_POINTER(aProtocolHandler);
NS_ENSURE_ARG(aURI);
if(mParentContentListener)
return mParentContentListener->GetProtocolHandler(aURI, aProtocolHandler);
else
*aProtocolHandler = nsnull;
if(mParentContentListener)
{
nsresult rv = mParentContentListener->GetProtocolHandler(aURI,
aProtocolHandler);
if(NS_ERROR_NOT_IMPLEMENTED != rv)
return rv;
}
*aProtocolHandler = nsnull;
return NS_OK;
}
@ -86,7 +96,7 @@ NS_IMETHODIMP nsWBURIContentListener::DoContent(const char* aContentType,
nsIChannel* aOpenedChannel, nsIStreamListener** aContentHandler,
PRBool* aAbortProcess)
{
NS_ERROR("Hmmmm, why is this getting called?");
NS_ERROR("Hmmmm, why is this getting called on this object?");
return NS_OK;
}
@ -98,42 +108,45 @@ NS_IMETHODIMP nsWBURIContentListener::IsPreferred(const char* aContentType,
NS_ENSURE_ARG_POINTER(aDesiredContentType);
if(mParentContentListener)
return mParentContentListener->IsPreferred(aContentType, aCommand,
aWindowTarget, aDesiredContentType, aCanHandle);
else
{
*aCanHandle = PR_FALSE;
// the webbrowser object is the primary content handler for the following types:
// If we are asked to handle any of these types, we will always say Yes!
// regardlesss of the uri load command.
// incoming Type Preferred type
// text/html
// text/xul
// text/rdf
// text/xml
// text/css
// image/gif
// image/jpeg
// image/png
// image/tiff
// application/http-index-format
nsresult rv = mParentContentListener->IsPreferred(aContentType,
aCommand, aWindowTarget, aDesiredContentType, aCanHandle);
if(NS_ERROR_NOT_IMPLEMENTED != rv)
return rv;
}
if(aContentType)
{
// (1) list all content types we want to be the primary handler for....
// and suggest a desired content type if appropriate...
if(nsCRT::strcasecmp(aContentType, "text/html") == 0
|| nsCRT::strcasecmp(aContentType, "text/xul") == 0
|| nsCRT::strcasecmp(aContentType, "text/rdf") == 0
|| nsCRT::strcasecmp(aContentType, "text/xml") == 0
|| nsCRT::strcasecmp(aContentType, "text/css") == 0
|| nsCRT::strcasecmp(aContentType, "image/gif") == 0
|| nsCRT::strcasecmp(aContentType, "image/jpeg") == 0
|| nsCRT::strcasecmp(aContentType, "image/png") == 0
|| nsCRT::strcasecmp(aContentType, "image/tiff") == 0
|| nsCRT::strcasecmp(aContentType, "application/http-index-format") == 0)
*aCanHandle = PR_TRUE;
}
*aCanHandle = PR_FALSE;
// the webbrowser object is the primary content handler for the following types:
// If we are asked to handle any of these types, we will always say Yes!
// regardlesss of the uri load command.
// incoming Type Preferred type
// text/html
// text/xul
// text/rdf
// text/xml
// text/css
// image/gif
// image/jpeg
// image/png
// image/tiff
// application/http-index-format
if(aContentType)
{
// (1) list all content types we want to be the primary handler for....
// and suggest a desired content type if appropriate...
if(nsCRT::strcasecmp(aContentType, "text/html") == 0
|| nsCRT::strcasecmp(aContentType, "text/xul") == 0
|| nsCRT::strcasecmp(aContentType, "text/rdf") == 0
|| nsCRT::strcasecmp(aContentType, "text/xml") == 0
|| nsCRT::strcasecmp(aContentType, "text/css") == 0
|| nsCRT::strcasecmp(aContentType, "image/gif") == 0
|| nsCRT::strcasecmp(aContentType, "image/jpeg") == 0
|| nsCRT::strcasecmp(aContentType, "image/png") == 0
|| nsCRT::strcasecmp(aContentType, "image/tiff") == 0
|| nsCRT::strcasecmp(aContentType, "application/http-index-format") == 0)
*aCanHandle = PR_TRUE;
}
return NS_OK;