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pjs/uriloader/exthandler/nsExternalHelperAppService.cpp

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/* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is the Mozilla browser.
*
* The Initial Developer of the Original Code is Netscape
* Communications, Inc. Portions created by Netscape are
* Copyright (C) 1999, Mozilla. All Rights Reserved.
*
* Contributor(s):
* Scott MacGregor <mscott@netscape.com>
*/
#include "nsExternalHelperAppService.h"
#include "nsIURI.h"
#include "nsIURL.h"
#include "nsIFile.h"
#include "nsIChannel.h"
#include "nsIDirectoryService.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsXPIDLString.h"
#include "nsMemory.h"
#include "nsIStreamListener.h"
#include "nsIMIMEService.h"
// used to manage our in memory data source of helper applications
#include "nsRDFCID.h"
#include "rdf.h"
#include "nsIRDFService.h"
#include "nsIRDFRemoteDataSource.h"
#include "nsIFileSpec.h"
#include "nsHelperAppRDF.h"
#include "nsIMIMEInfo.h"
#include "nsDirectoryServiceDefs.h"
#include "nsIHelperAppLauncherDialog.h"
#include "nsIFilePicker.h"
#include "nsCExternalHandlerService.h" // contains progids for the helper app service
static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID);
static NS_DEFINE_CID(kRDFXMLDataSourceCID, NS_RDFXMLDATASOURCE_CID);
NS_IMPL_THREADSAFE_ADDREF(nsExternalHelperAppService)
NS_IMPL_THREADSAFE_RELEASE(nsExternalHelperAppService)
NS_INTERFACE_MAP_BEGIN(nsExternalHelperAppService)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIExternalHelperAppService)
NS_INTERFACE_MAP_ENTRY(nsIExternalHelperAppService)
NS_INTERFACE_MAP_ENTRY(nsPIExternalAppLauncher)
NS_INTERFACE_MAP_ENTRY(nsIExternalProtocolService)
NS_INTERFACE_MAP_END_THREADSAFE
nsExternalHelperAppService::nsExternalHelperAppService()
{
NS_INIT_ISUPPORTS();
}
nsExternalHelperAppService::~nsExternalHelperAppService()
{
}
nsresult nsExternalHelperAppService::Init()
{
nsresult rv = NS_OK;
nsCOMPtr<nsIRDFService> rdf = do_GetService(kRDFServiceCID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIRDFRemoteDataSource> remoteDS = do_CreateInstance(kRDFXMLDataSourceCID, &rv);
mOverRideDataSource = do_QueryInterface(remoteDS);
NS_ENSURE_SUCCESS(rv,rv);
nsCOMPtr<nsIFile> mimeTypesFile;
nsXPIDLCString pathBuf;
nsCOMPtr<nsIFileSpec> mimeTypesFileSpec;
rv = NS_GetSpecialDirectory(NS_APP_USER_MIMETYPES_50_FILE, getter_AddRefs(mimeTypesFile));
NS_ENSURE_SUCCESS(rv, rv);
rv = mimeTypesFile->GetPath(getter_Copies(pathBuf));
NS_ENSURE_SUCCESS(rv, rv);
rv = NS_NewFileSpec(getter_AddRefs(mimeTypesFileSpec));
NS_ENSURE_SUCCESS(rv, rv);
mimeTypesFileSpec->SetNativePath(pathBuf);
nsXPIDLCString url;
rv = mimeTypesFileSpec->GetURLString(getter_Copies(url));
NS_ENSURE_SUCCESS(rv, rv);
rv = remoteDS->Init(url);
NS_ENSURE_SUCCESS(rv, rv);
// for now load synchronously (async seems to be busted)
rv = remoteDS->Refresh(PR_TRUE);
NS_ASSERTION(NS_SUCCEEDED(rv), "failed refresh?\n");
#ifdef DEBUG_mscott
PRBool loaded;
rv = remoteDS->GetLoaded(&loaded);
NS_ASSERTION(NS_SUCCEEDED(rv), "failed getload\n");
printf("After refresh: datasource is %s\n", loaded ? "loaded" : "not loaded");
#endif
// initialize our resources if we haven't done so already...
if (!kNC_Description)
{
rdf->GetResource(NC_RDF_DESCRIPTION, getter_AddRefs(kNC_Description));
rdf->GetResource(NC_RDF_VALUE, getter_AddRefs(kNC_Value));
rdf->GetResource(NC_RDF_FILEEXTENSIONS,getter_AddRefs(kNC_FileExtensions));
rdf->GetResource(NC_RDF_PATH, getter_AddRefs(kNC_Path));
rdf->GetResource(NC_RDF_SAVETODISK, getter_AddRefs(kNC_SaveToDisk));
rdf->GetResource(NC_RDF_HANDLEINTERNAL,getter_AddRefs(kNC_HandleInternal));
rdf->GetResource(NC_RDF_ALWAYSASK, getter_AddRefs(kNC_AlwaysAsk));
rdf->GetResource(NC_RDF_PRETTYNAME, getter_AddRefs(kNC_PrettyName));
}
return rv;
}
/* boolean canHandleContent (in string aMimeContentType); */
NS_IMETHODIMP nsExternalHelperAppService::CanHandleContent(const char *aMimeContentType, nsIURI * aURI, PRBool *_retval)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
// it's ESSENTIAL that this method return an error code if we were unable to determine how this content should be handle
// this allows derived OS implementations of Docontent to step in and look for OS specific solutions.
NS_IMETHODIMP nsExternalHelperAppService::DoContent(const char *aMimeContentType, nsIURI *aURI, nsISupports *aWindowContext,
PRBool *aAbortProcess, nsIStreamListener ** aStreamListener)
{
// (1) try to get a mime info object for the content type....if we don't know anything about the type, then
// we certainly can't handle it and we'll just return without creating a stream listener.
*aStreamListener = nsnull;
nsCOMPtr<nsIMIMEInfo> mimeInfo;
nsresult rv = GetMIMEInfoForMimeType(aMimeContentType, getter_AddRefs(mimeInfo));
if (NS_SUCCEEDED(rv) && mimeInfo)
{
// ask the OS specific subclass to create a stream listener for us that binds this suggested application
// even if this fails, return NS_OK...
nsXPIDLCString fileExtension;
mimeInfo->FirstExtension(getter_Copies(fileExtension));
nsExternalAppHandler * app = CreateNewExternalHandler(mimeInfo, fileExtension, aWindowContext);
if (app)
app->QueryInterface(NS_GET_IID(nsIStreamListener), (void **) aStreamListener);
return NS_OK;
}
// if we made it here, then we were unable to handle this ourselves..return an error so the
// derived class will know to try OS specific wonders on it.
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP nsExternalHelperAppService::LaunchAppWithTempFile(nsIMIMEInfo * aMimeInfo, nsIFile * aTempFile)
{
// this method should only be implemented by each OS specific implementation of this service.
return NS_ERROR_NOT_IMPLEMENTED;
}
nsExternalAppHandler * nsExternalHelperAppService::CreateNewExternalHandler(nsIMIMEInfo * aMIMEInfo,
const char * aTempFileExtension,
nsISupports * aWindowContext)
{
nsExternalAppHandler* handler = nsnull;
NS_NEWXPCOM(handler, nsExternalAppHandler);
// add any XP intialization code for an external handler that we may need here...
// right now we don't have any but i bet we will before we are done.
handler->Init(aMIMEInfo, aTempFileExtension, aWindowContext);
return handler;
}
nsresult nsExternalHelperAppService::FillTopLevelProperties(const char * aContentType, nsIRDFResource * aContentTypeNodeResource,
nsIRDFService * aRDFService, nsIMIMEInfo * aMIMEInfo)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIRDFNode> target;
nsCOMPtr<nsIRDFLiteral> literal;
const PRUnichar * stringValue;
// set the mime type
aMIMEInfo->SetMIMEType(aContentType);
// set the pretty name description
FillLiteralValueFromTarget(aContentTypeNodeResource,kNC_Description, &stringValue);
aMIMEInfo->SetDescription(stringValue);
// now iterate over all the file type extensions...
nsCOMPtr<nsISimpleEnumerator> fileExtensions;
mOverRideDataSource->GetTargets(aContentTypeNodeResource, kNC_FileExtensions, PR_TRUE, getter_AddRefs(fileExtensions));
PRBool hasMoreElements = PR_FALSE;
nsCAutoString fileExtension;
nsCOMPtr<nsISupports> element;
if (fileExtensions)
{
fileExtensions->HasMoreElements(&hasMoreElements);
while (hasMoreElements)
{
fileExtensions->GetNext(getter_AddRefs(element));
if (element)
{
literal = do_QueryInterface(element);
literal->GetValueConst(&stringValue);
fileExtension.AssignWithConversion(stringValue);
if (!fileExtension.IsEmpty())
aMIMEInfo->AppendExtension(fileExtension);
}
fileExtensions->HasMoreElements(&hasMoreElements);
} // while we have more extensions to parse....
}
return rv;
}
nsresult nsExternalHelperAppService::FillLiteralValueFromTarget(nsIRDFResource * aSource, nsIRDFResource * aProperty, const PRUnichar ** aLiteralValue)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIRDFLiteral> literal;
nsCOMPtr<nsIRDFNode> target;
*aLiteralValue = nsnull;
mOverRideDataSource->GetTarget(aSource, aProperty, PR_TRUE, getter_AddRefs(target));
if (target)
{
literal = do_QueryInterface(target);
if (!literal)
return NS_ERROR_FAILURE;
literal->GetValueConst(aLiteralValue);
}
else
rv = NS_ERROR_FAILURE;
return rv;
}
nsresult nsExternalHelperAppService::FillContentHandlerProperties(const char * aContentType,
nsIRDFResource * aContentTypeNodeResource,
nsIRDFService * aRDFService,
nsIMIMEInfo * aMIMEInfo)
{
nsCOMPtr<nsIRDFNode> target;
nsCOMPtr<nsIRDFLiteral> literal;
const PRUnichar * stringValue = nsnull;
nsresult rv = NS_OK;
nsCString contentTypeHandlerNodeName (NC_CONTENT_NODE_HANDLER_PREFIX);
contentTypeHandlerNodeName.Append(aContentType);
nsCOMPtr<nsIRDFResource> contentTypeHandlerNodeResource;
aRDFService->GetResource(contentTypeHandlerNodeName, getter_AddRefs(contentTypeHandlerNodeResource));
NS_ENSURE_TRUE(contentTypeHandlerNodeResource, NS_ERROR_FAILURE); // that's not good! we have an error in the rdf file
// now process the application handler information
aMIMEInfo->SetPreferredAction(nsIMIMEInfo::useHelperApp);
// save to disk
FillLiteralValueFromTarget(contentTypeHandlerNodeResource,kNC_SaveToDisk, &stringValue);
if (stringValue && nsCRT::strcasecmp(stringValue, "true") == 0)
aMIMEInfo->SetPreferredAction(nsIMIMEInfo::saveToDisk);
// handle internal
FillLiteralValueFromTarget(contentTypeHandlerNodeResource,kNC_HandleInternal, &stringValue);
if (stringValue && nsCRT::strcasecmp(stringValue, "true") == 0)
aMIMEInfo->SetPreferredAction(nsIMIMEInfo::handleInternally);
// always ask
FillLiteralValueFromTarget(contentTypeHandlerNodeResource,kNC_AlwaysAsk, &stringValue);
if (stringValue && nsCRT::strcasecmp(stringValue, "false") == 0)
aMIMEInfo->SetAlwaysAskBeforeHandling(PR_FALSE);
else
aMIMEInfo->SetAlwaysAskBeforeHandling(PR_TRUE);
// now digest the external application information
nsCAutoString externalAppNodeName (NC_CONTENT_NODE_EXTERNALAPP_PREFIX);
externalAppNodeName.Append(aContentType);
nsCOMPtr<nsIRDFResource> externalAppNodeResource;
aRDFService->GetResource(externalAppNodeName, getter_AddRefs(externalAppNodeResource));
if (externalAppNodeResource)
{
FillLiteralValueFromTarget(externalAppNodeResource, kNC_PrettyName, &stringValue);
if (stringValue)
aMIMEInfo->SetApplicationDescription(stringValue);
FillLiteralValueFromTarget(externalAppNodeResource, kNC_Path, &stringValue);
if (stringValue)
{
nsCOMPtr<nsIFile> application;
GetFileTokenForPath(stringValue, getter_AddRefs(application));
if (application)
aMIMEInfo->SetPreferredApplicationHandler(application);
}
}
return rv;
}
nsresult nsExternalHelperAppService::GetMIMEInfoForMimeType(const char * aContentType, nsIMIMEInfo ** aMIMEInfo)
{
nsresult rv = NS_OK;
// if we have a data source then use the information found in that...
// if that fails....then try to the old mime service that i'm going to be
// obsoleting soon...
if (mOverRideDataSource)
{
nsCOMPtr<nsIRDFNode> target;
nsCOMPtr<nsIRDFResource> source;
nsCOMPtr<nsIRDFResource> contentTypeNodeResource;
nsCString contentTypeNodeName (NC_CONTENT_NODE_PREFIX);
contentTypeNodeName.Append(aContentType);
nsCOMPtr<nsIRDFService> rdf = do_GetService(kRDFServiceCID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = rdf->GetResource(contentTypeNodeName, getter_AddRefs(contentTypeNodeResource));
// we need a way to determine if this content type resource is really in the graph or not...
// every mime type should have a value field so test for that target..
mOverRideDataSource->GetTarget(contentTypeNodeResource, kNC_Value, PR_TRUE, getter_AddRefs(target));
if (NS_SUCCEEDED(rv) && target)
{
// create a mime info object and we'll fill it in based on the values from the data source
nsCOMPtr<nsIMIMEInfo> mimeInfo (do_CreateInstance(NS_MIMEINFO_PROGID));
rv = FillTopLevelProperties(aContentType, contentTypeNodeResource, rdf, mimeInfo);
NS_ENSURE_SUCCESS(rv, rv);
rv = FillContentHandlerProperties(aContentType, contentTypeNodeResource, rdf, mimeInfo);
*aMIMEInfo = mimeInfo;
NS_IF_ADDREF(*aMIMEInfo);
} // if we have a node in the graph for this content type
else
*aMIMEInfo = nsnull;
} // if we have a data source
if (!*aMIMEInfo)
{
// try the old mime service.
nsCOMPtr<nsIMIMEService> mimeService (do_GetService("component:||netscape|mime"));
if (mimeService)
mimeService->GetFromMIMEType(aContentType, aMIMEInfo);
// if it doesn't have an entry then we really know nothing about this type...
}
return rv;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////
// begin external protocol service default implementation...
//////////////////////////////////////////////////////////////////////////////////////////////////////
NS_IMETHODIMP nsExternalHelperAppService::ExternalProtocolHandlerExists(const char * aProtocolScheme,
PRBool * aHandlerExists)
{
// this method should only be implemented by each OS specific implementation of this service.
*aHandlerExists = PR_FALSE;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsExternalHelperAppService::LoadUrl(nsIURI * aURL)
{
// this method should only be implemented by each OS specific implementation of this service.
return NS_ERROR_NOT_IMPLEMENTED;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////
// begin external app handler implementation
//////////////////////////////////////////////////////////////////////////////////////////////////////
NS_IMPL_THREADSAFE_ADDREF(nsExternalAppHandler)
NS_IMPL_THREADSAFE_RELEASE(nsExternalAppHandler)
NS_INTERFACE_MAP_BEGIN(nsExternalAppHandler)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIStreamListener)
NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
NS_INTERFACE_MAP_ENTRY(nsIStreamObserver)
NS_INTERFACE_MAP_ENTRY(nsIHelperAppLauncher)
NS_INTERFACE_MAP_END_THREADSAFE
nsExternalAppHandler::nsExternalAppHandler()
{
NS_INIT_ISUPPORTS();
mCanceled = PR_FALSE;
mReceivedDispostionInfo = PR_FALSE;
mStopRequestIssued = PR_FALSE;
mDataBuffer = (char *) nsMemory::Alloc((sizeof(char) * DATA_BUFFER_SIZE));
}
nsExternalAppHandler::~nsExternalAppHandler()
{
if (mDataBuffer)
nsMemory::Free(mDataBuffer);
}
nsresult nsExternalAppHandler::SetUpTempFile(nsIChannel * aChannel)
{
nsresult rv = NS_OK;
#ifdef XP_MAC
// create a temp file for the data...and open it for writing.
NS_GetSpecialDirectory(NS_MAC_DESKTOP_DIR, getter_AddRefs(mTempFile));
#else
// create a temp file for the data...and open it for writing.
NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(mTempFile));
#endif
nsCOMPtr<nsIURI> uri;
aChannel->GetURI(getter_AddRefs(uri));
nsCOMPtr<nsIURL> url = do_QueryInterface(uri);
nsCAutoString tempLeafName;
if (url)
{
// try to extract the file name from the url and use that as a first pass as the
// leaf name of our temp file...
nsXPIDLCString leafName;
url->GetFileName(getter_Copies(leafName));
if (leafName)
{
tempLeafName = leafName;
// strip off whatever extension this file may have and force our own extension.
PRInt32 pos = tempLeafName.RFindCharInSet(".");
if (pos > 0) // we have a comma separated list of languages...
tempLeafName.Truncate(pos); // truncate everything after the first comma (including the comma)
}
}
if (tempLeafName.IsEmpty())
tempLeafName = "test"; // this is bogus...what do i do if i can't get a file name from the url.
// now append our extension.
tempLeafName.Append(mTempFileExtension);
mTempFile->Append(tempLeafName); // make this file unique!!!
mTempFile->CreateUnique(nsnull, nsIFile::NORMAL_FILE_TYPE, 0644);
nsCOMPtr<nsIFileChannel> fileChannel = do_CreateInstance(NS_LOCALFILECHANNEL_PROGID);
if (fileChannel)
{
rv = fileChannel->Init(mTempFile, -1, 0);
if (NS_FAILED(rv)) return rv;
rv = fileChannel->OpenOutputStream(getter_AddRefs(mOutStream));
if (NS_FAILED(rv)) return rv;
}
return rv;
}
NS_IMETHODIMP nsExternalAppHandler::OnStartRequest(nsIChannel * aChannel, nsISupports * aCtxt)
{
NS_ENSURE_ARG(aChannel);
// first, check to see if we've been canceled....
if (mCanceled) // then go cancel our underlying channel too
return aChannel->Cancel(NS_BINDING_ABORTED);
nsresult rv = SetUpTempFile(aChannel);
// now that the temp file is set up, find out if we need to invoke a dialog asking the user what
// they want us to do with this content...
PRBool alwaysAsk = PR_FALSE;
mMimeInfo->GetAlwaysAskBeforeHandling(&alwaysAsk);
if (alwaysAsk)
{
// do this first! make sure we don't try to take an action until the user tells us what they want to do
// with it...
mReceivedDispostionInfo = PR_FALSE;
// invoke the dialog!!!!! use mWindowContext as the window context parameter for the dialog service
nsCOMPtr<nsIHelperAppLauncherDialog> dlgService( do_GetService( NS_IHELPERAPPLAUNCHERDLG_PROGID ) );
if ( dlgService )
rv = dlgService->Show( this, mWindowContext );
// what do we do if the dialog failed? I guess we should call Cancel and abort the load....
}
else
mReceivedDispostionInfo = PR_TRUE; // no need to wait for a response from the user
// be sure to release our reference on the context now that we are done with it to avoid any circular reference
// chains...
mWindowContext = nsnull;
return NS_OK;
}
NS_IMETHODIMP nsExternalAppHandler::OnDataAvailable(nsIChannel * aChannel, nsISupports * aCtxt,
nsIInputStream * inStr, PRUint32 sourceOffset, PRUint32 count)
{
// first, check to see if we've been canceled....
if (mCanceled) // then go cancel our underlying channel too
return aChannel->Cancel(NS_BINDING_ABORTED);
// read the data out of the stream and write it to the temp file.
PRUint32 numBytesRead = 0;
if (mOutStream && mDataBuffer && count > 0)
{
PRUint32 numBytesRead = 0;
PRUint32 numBytesWritten = 0;
while (count > 0) // while we still have bytes to copy...
{
inStr->Read(mDataBuffer, PR_MIN(count, DATA_BUFFER_SIZE - 1), &numBytesRead);
if (count >= numBytesRead)
count -= numBytesRead; // subtract off the number of bytes we just read
else
count = 0;
mOutStream->Write(mDataBuffer, numBytesRead, &numBytesWritten);
}
}
return NS_OK;
}
NS_IMETHODIMP nsExternalAppHandler::OnStopRequest(nsIChannel * aChannel, nsISupports *aCtxt,
nsresult aStatus, const PRUnichar * errorMsg)
{
nsresult rv = NS_OK;
mStopRequestIssued = PR_TRUE;
// first, check to see if we've been canceled....
if (mCanceled) // then go cancel our underlying channel too
return aChannel->Cancel(NS_BINDING_ABORTED);
// go ahead and execute the application passing in our temp file as an argument
// this may involve us calling back into the OS external app service to make the call
// for actually launching the helper app. It'd be great if nsIFile::spawn could be made to work
// on the mac...right now the mac implementation ignores all arguments passed in.
// close the stream...
if (mOutStream)
{
mOutStream->Close();
mOutStream = nsnull;
}
if (mReceivedDispostionInfo && !mCanceled)
{
nsMIMEInfoHandleAction action = nsIMIMEInfo::saveToDisk;
mMimeInfo->GetPreferredAction(&action);
if (action == nsIMIMEInfo::saveToDisk)
{
rv = SaveToDisk(mFinalFileDestination, PR_FALSE);
}
else
{
rv = LaunchWithApplication(nsnull, PR_FALSE);
}
}
return rv;
}
nsresult nsExternalAppHandler::Init(nsIMIMEInfo * aMIMEInfo, const char * aTempFileExtension, nsISupports * aWindowContext)
{
mWindowContext = aWindowContext;
mMimeInfo = aMIMEInfo;
// make sure the extention includes the '.'
if (aTempFileExtension && *aTempFileExtension != '.')
mTempFileExtension = ".";
mTempFileExtension.Append(aTempFileExtension);
return NS_OK;
}
NS_IMETHODIMP nsExternalAppHandler::GetMIMEInfo(nsIMIMEInfo ** aMIMEInfo)
{
*aMIMEInfo = mMimeInfo;
NS_IF_ADDREF(*aMIMEInfo);
return NS_OK;
}
nsresult nsExternalAppHandler::PromptForSaveToFile(nsILocalFile ** aNewFile, const PRUnichar * aDefaultFile)
{
// I'm thinking the best thing to do here is to pass this call through to
// someone else and let them bring up the dialog. This keeps dialog dependencies out
// of the uriloader...
nsresult rv = NS_OK;
nsCOMPtr<nsIFilePicker> filePicker = do_CreateInstance("component://mozilla/filepicker", &rv);
if (filePicker)
{
// HACK!! Find a string bundle to extract this string from.
filePicker->Init(nsnull, NS_LITERAL_STRING("Enter name of file to save to"), nsIFilePicker::modeSave);
filePicker->SetDefaultString(aDefaultFile);
filePicker->AppendFilter(NS_ConvertASCIItoUCS2(mTempFileExtension), NS_ConvertASCIItoUCS2(mTempFileExtension));
filePicker->AppendFilters(nsIFilePicker::filterAll);
PRInt16 dialogResult;
filePicker->Show(&dialogResult);
if (dialogResult == nsIFilePicker::returnCancel)
rv = NS_ERROR_FAILURE;
else
rv = filePicker->GetFile(aNewFile);
}
return rv;
}
NS_IMETHODIMP nsExternalAppHandler::SaveToDisk(nsIFile * aNewFileLocation, PRBool aRememberThisPreference)
{
nsresult rv = NS_OK;
nsCOMPtr<nsILocalFile> fileToUse;
if (mCanceled)
return NS_OK;
if (!aNewFileLocation)
{
nsXPIDLString leafName;
mTempFile->GetUnicodeLeafName(getter_Copies(leafName));
rv = PromptForSaveToFile(getter_AddRefs(fileToUse), leafName);
if (NS_FAILED(rv))
return Cancel();
mFinalFileDestination = do_QueryInterface(fileToUse);
}
else
fileToUse = do_QueryInterface(aNewFileLocation);
mReceivedDispostionInfo = PR_TRUE;
// if the on stop request was actually issued then it's now time to actually perform the file move....
if (mStopRequestIssued && fileToUse)
{
// extract the new leaf name from the file location
nsXPIDLCString fileName;
fileToUse->GetLeafName(getter_Copies(fileName));
nsCOMPtr<nsIFile> directoryLocation;
fileToUse->GetParent(getter_AddRefs(directoryLocation));
if (directoryLocation)
{
rv = mTempFile->MoveTo(directoryLocation, fileName);
}
}
return rv;
}
NS_IMETHODIMP nsExternalAppHandler::LaunchWithApplication(nsIFile * aApplication, PRBool aRememberThisPreference)
{
if (mCanceled)
return NS_OK;
mReceivedDispostionInfo = PR_TRUE;
if (mMimeInfo && aApplication)
mMimeInfo->SetPreferredApplicationHandler(aApplication);
// if a stop request was already issued then proceed with launching the application.
nsresult rv = NS_OK;
if (mStopRequestIssued)
{
nsCOMPtr<nsPIExternalAppLauncher> helperAppService (do_GetService(NS_EXTERNALHELPERAPPSERVICE_PROGID));
if (helperAppService)
{
rv = helperAppService->LaunchAppWithTempFile(mMimeInfo, mTempFile);
}
}
return NS_OK;
}
NS_IMETHODIMP nsExternalAppHandler::Cancel()
{
mCanceled = PR_TRUE;
// shutdown our stream to the temp file
if (mOutStream)
{
mOutStream->Close();
mOutStream = nsnull;
}
// clean up after ourselves and delete the temp file...
if (mTempFile)
{
mTempFile->Delete(PR_TRUE);
mTempFile = nsnull;
}
return NS_OK;
}
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