gecko-dev/chrome/src/nsChromeRegistry.cpp

916 строки
30 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsCOMPtr.h"
#include "nsFileSpec.h"
#include "nsSpecialSystemDirectory.h"
#include "nsIChromeRegistry.h"
#include "nsIRDFDataSource.h"
#include "nsIRDFObserver.h"
#include "nsIRDFRemoteDataSource.h"
#include "nsCRT.h"
#include "rdf.h"
#include "nsIServiceManager.h"
#include "nsIRDFService.h"
#include "nsRDFCID.h"
#include "nsIRDFResource.h"
#include "nsIRDFDataSource.h"
#include "nsHashtable.h"
#include "nsString.h"
#include "nsXPIDLString.h"
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kIRDFResourceIID, NS_IRDFRESOURCE_IID);
static NS_DEFINE_IID(kIRDFLiteralIID, NS_IRDFLITERAL_IID);
static NS_DEFINE_IID(kIRDFServiceIID, NS_IRDFSERVICE_IID);
static NS_DEFINE_IID(kIRDFDataSourceIID, NS_IRDFDATASOURCE_IID);
static NS_DEFINE_IID(kIRDFIntIID, NS_IRDFINT_IID);
static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID);
static NS_DEFINE_CID(kRDFXMLDataSourceCID, NS_RDFXMLDATASOURCE_CID);
#define CHROME_NAMESPACE_URI "http://chrome.mozilla.org/rdf#"
DEFINE_RDF_VOCAB(CHROME_NAMESPACE_URI, CHROME, chrome);
DEFINE_RDF_VOCAB(CHROME_NAMESPACE_URI, CHROME, skin);
DEFINE_RDF_VOCAB(CHROME_NAMESPACE_URI, CHROME, content);
DEFINE_RDF_VOCAB(CHROME_NAMESPACE_URI, CHROME, locale);
DEFINE_RDF_VOCAB(CHROME_NAMESPACE_URI, CHROME, platform);
DEFINE_RDF_VOCAB(CHROME_NAMESPACE_URI, CHROME, behavior);
DEFINE_RDF_VOCAB(CHROME_NAMESPACE_URI, CHROME, base);
DEFINE_RDF_VOCAB(CHROME_NAMESPACE_URI, CHROME, main);
DEFINE_RDF_VOCAB(CHROME_NAMESPACE_URI, CHROME, archive);
DEFINE_RDF_VOCAB(CHROME_NAMESPACE_URI, CHROME, displayname);
DEFINE_RDF_VOCAB(CHROME_NAMESPACE_URI, CHROME, name);
DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, Description);
// This nasty function should disappear when we land Necko completely and
// change chrome://global/skin/foo to chrome://skin@global/foo
//
void BreakProviderAndRemainingFromPath(const char* i_path, char** o_provider, char** o_remaining);
////////////////////////////////////////////////////////////////////////////////
class nsChromeRegistry : public nsIChromeRegistry,
public nsIRDFDataSource,
public nsIRDFRemoteDataSource
{
public:
NS_DECL_ISUPPORTS
// nsIChromeRegistry methods:
NS_IMETHOD InitRegistry();
NS_IMETHOD ConvertChromeURL(nsIURI* aChromeURL);
// nsIRDFDataSource methods
NS_IMETHOD GetURI(char** uri);
NS_IMETHOD GetSource(nsIRDFResource* property,
nsIRDFNode* target,
PRBool tv,
nsIRDFResource** source /* out */) ;
NS_IMETHOD GetSources(nsIRDFResource* property,
nsIRDFNode* target,
PRBool tv,
nsISimpleEnumerator** sources /* out */) ;
NS_IMETHOD GetTarget(nsIRDFResource* source,
nsIRDFResource* property,
PRBool tv,
nsIRDFNode** target /* out */) ;
NS_IMETHOD GetTargets(nsIRDFResource* source,
nsIRDFResource* property,
PRBool tv,
nsISimpleEnumerator** targets /* out */) ;
NS_IMETHOD Assert(nsIRDFResource* source,
nsIRDFResource* property,
nsIRDFNode* target,
PRBool tv) ;
NS_IMETHOD Unassert(nsIRDFResource* source,
nsIRDFResource* property,
nsIRDFNode* target) ;
NS_IMETHOD Change(nsIRDFResource* aSource,
nsIRDFResource* aProperty,
nsIRDFNode* aOldTarget,
nsIRDFNode* aNewTarget);
NS_IMETHOD Move(nsIRDFResource* aOldSource,
nsIRDFResource* aNewSource,
nsIRDFResource* aProperty,
nsIRDFNode* aTarget);
NS_IMETHOD HasAssertion(nsIRDFResource* source,
nsIRDFResource* property,
nsIRDFNode* target,
PRBool tv,
PRBool* hasAssertion /* out */) ;
NS_IMETHOD AddObserver(nsIRDFObserver* n) ;
NS_IMETHOD RemoveObserver(nsIRDFObserver* n) ;
NS_IMETHOD ArcLabelsIn(nsIRDFNode* node,
nsISimpleEnumerator** labels /* out */) ;
NS_IMETHOD ArcLabelsOut(nsIRDFResource* source,
nsISimpleEnumerator** labels /* out */) ;
NS_IMETHOD GetAllResources(nsISimpleEnumerator** aResult) ;
NS_IMETHOD GetAllCommands(nsIRDFResource* source,
nsIEnumerator/*<nsIRDFResource>*/** commands) ;
NS_IMETHOD GetAllCmds(nsIRDFResource* source,
nsISimpleEnumerator/*<nsIRDFResource>*/** commands) ;
NS_IMETHOD IsCommandEnabled(nsISupportsArray/*<nsIRDFResource>*/* aSources,
nsIRDFResource* aCommand,
nsISupportsArray/*<nsIRDFResource>*/* aArguments,
PRBool* retVal) ;
NS_IMETHOD DoCommand(nsISupportsArray/*<nsIRDFResource>*/* aSources,
nsIRDFResource* aCommand,
nsISupportsArray/*<nsIRDFResource>*/* aArguments) ;
// nsIRDFRemoteDataSource methods
NS_IMETHOD Init(const char* aURI);
NS_IMETHOD Refresh(PRBool aBlocking);
NS_IMETHOD Flush();
// nsChromeRegistry methods:
nsChromeRegistry();
virtual ~nsChromeRegistry();
static PRUint32 gRefCnt;
static nsIRDFService* gRDFService;
static nsIRDFResource* kCHROME_chrome;
static nsIRDFResource* kCHROME_skin;
static nsIRDFResource* kCHROME_content;
static nsIRDFResource* kCHROME_platform;
static nsIRDFResource* kCHROME_locale;
static nsIRDFResource* kCHROME_behavior;
static nsIRDFResource* kCHROME_base;
static nsIRDFResource* kCHROME_main;
static nsIRDFResource* kCHROME_archive;
static nsIRDFResource* kCHROME_name;
static nsIRDFResource* kCHROME_displayname;
static nsIRDFDataSource* mInner;
protected:
nsresult GetPackageTypeResource(const nsString& aChromeType, nsIRDFResource** aResult);
nsresult GetChromeResource(nsString& aResult, nsIRDFResource* aChromeResource,
nsIRDFResource* aProperty);
};
PRUint32 nsChromeRegistry::gRefCnt ;
nsIRDFService* nsChromeRegistry::gRDFService = nsnull;
nsIRDFResource* nsChromeRegistry::kCHROME_chrome = nsnull;
nsIRDFResource* nsChromeRegistry::kCHROME_skin = nsnull;
nsIRDFResource* nsChromeRegistry::kCHROME_content = nsnull;
nsIRDFResource* nsChromeRegistry::kCHROME_locale = nsnull;
nsIRDFResource* nsChromeRegistry::kCHROME_behavior = nsnull;
nsIRDFResource* nsChromeRegistry::kCHROME_platform = nsnull;
nsIRDFResource* nsChromeRegistry::kCHROME_base = nsnull;
nsIRDFResource* nsChromeRegistry::kCHROME_main = nsnull;
nsIRDFResource* nsChromeRegistry::kCHROME_archive = nsnull;
nsIRDFResource* nsChromeRegistry::kCHROME_name = nsnull;
nsIRDFResource* nsChromeRegistry::kCHROME_displayname = nsnull;
nsIRDFDataSource* nsChromeRegistry::mInner = nsnull;
////////////////////////////////////////////////////////////////////////////////
nsChromeRegistry::nsChromeRegistry()
{
NS_INIT_REFCNT();
}
nsChromeRegistry::~nsChromeRegistry()
{
--gRefCnt;
if (gRefCnt == 0) {
// Release our inner data source
NS_IF_RELEASE(mInner);
// release all the properties:
NS_IF_RELEASE(kCHROME_chrome);
NS_IF_RELEASE(kCHROME_skin);
NS_IF_RELEASE(kCHROME_content);
NS_IF_RELEASE(kCHROME_platform);
NS_IF_RELEASE(kCHROME_locale);
NS_IF_RELEASE(kCHROME_behavior);
NS_IF_RELEASE(kCHROME_base);
NS_IF_RELEASE(kCHROME_main);
NS_IF_RELEASE(kCHROME_archive);
NS_IF_RELEASE(kCHROME_displayname);
NS_IF_RELEASE(kCHROME_name);
if (gRDFService) {
nsServiceManager::ReleaseService(kRDFServiceCID, gRDFService);
gRDFService = nsnull;
}
}
}
NS_IMPL_ADDREF(nsChromeRegistry)
NS_IMPL_RELEASE(nsChromeRegistry)
NS_IMETHODIMP
nsChromeRegistry::QueryInterface(REFNSIID aIID, void** aResult)
{
NS_PRECONDITION(aResult != nsnull, "null ptr");
if (! aResult)
return NS_ERROR_NULL_POINTER;
if (aIID.Equals(nsCOMTypeInfo<nsIChromeRegistry>::GetIID()) ||
aIID.Equals(kISupportsIID)) {
*aResult = NS_STATIC_CAST(nsIChromeRegistry*, this);
}
else if (aIID.Equals(nsCOMTypeInfo<nsIRDFDataSource>::GetIID())) {
*aResult = NS_STATIC_CAST(nsIRDFDataSource*, this);
}
else if (aIID.Equals(nsCOMTypeInfo<nsIRDFRemoteDataSource>::GetIID())) {
*aResult = NS_STATIC_CAST(nsIRDFRemoteDataSource*, this);
}
else {
*aResult = nsnull;
return NS_NOINTERFACE;
}
NS_ADDREF(this);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// nsIChromeRegistry methods:
/*
The ConvertChromeURL takes a chrome URL and converts it into a resource: or
an HTTP: url type with certain rules. Here are the current portions of a
chrome: url that make up the chrome-
chrome://global/skin/foo?bar
\------/ \----/\---/ \-----/
| | | |
| | | `-- RemainingPortion
| | |
| | `-- Provider
| |
| `-- Package
|
'-- Always "chrome://"
Sometime in future when Necko lands completely this will change to the
following syntax-
chrome://skin@global/foo?bar
This will make the parsing simpler and quicker (since the URL parsing already
takes this into account)
*/
NS_IMETHODIMP
nsChromeRegistry::ConvertChromeURL(nsIURI* aChromeURL)
#ifdef NECKO
{
nsresult rv = NS_OK;
NS_ASSERTION(aChromeURL, "null url!");
if (!aChromeURL)
return NS_ERROR_NULL_POINTER;
#ifdef NS_DEBUG
//Ensure that we got a chrome url!
nsXPIDLCString scheme;
rv = aChromeURL->GetScheme(getter_Copies(scheme));
if (NS_FAILED(rv)) return rv;
NS_ASSERTION((0 == PL_strncmp(scheme, "chrome", 6)),
"Bad scheme URL in chrome URL conversion!");
if (0 != PL_strncmp(scheme, "chrome", 6))
return NS_ERROR_FAILURE;
#endif
// Obtain the package, provider and remaining from the URL
nsXPIDLCString package, provider, remaining;
#if 0 // This change happens when we switch to using chrome://skin@global/foo..
rv = aChromeURL->GetHost(getter_Copies(package));
if (NS_FAILED(rv)) return rv;
rv = aChromeURL->GetPreHost(getter_Copies(provider));
if (NS_FAILED(rv)) return rv;
rv = aChromeURL->GetPath(getter_Copies(remaining));
if (NS_FAILED(rv)) return rv;
#else // For now however...
rv = aChromeURL->GetHost(getter_Copies(package));
if (NS_FAILED(rv)) return rv;
nsXPIDLCString tempPath;
rv = aChromeURL->GetPath(getter_Copies(tempPath));
if (NS_FAILED(rv)) return rv;
BreakProviderAndRemainingFromPath(
(const char*)tempPath,
getter_Copies(provider),
getter_Copies(remaining));
#endif
// Construct the lookup string-
// which is basically chrome:// + package + provider
nsAutoString lookup("chrome://");
lookup += package; // no trailing slash here
NS_ASSERTION(*provider == '/', "No leading slash here!");
//definitely have a leading slash...
if (*provider != '/')
lookup += '/';
lookup += provider;
// end it on a slash if none is present
if (lookup.CharAt(lookup.Length()-1) != '/')
lookup += '/';
// Get the chromeResource from this lookup string
nsCOMPtr<nsIRDFResource> chromeResource;
if (NS_FAILED(rv = GetPackageTypeResource(lookup, getter_AddRefs(chromeResource)))) {
NS_ERROR("Unable to retrieve the resource corresponding to the chrome skin or content.");
return rv;
}
// Using this chrome resource get the three basic things of a chrome entry-
// base, name, main. and don't bail if they don't exist.
nsAutoString base, name, main;
rv = GetChromeResource(name, chromeResource, kCHROME_name);
if (NS_FAILED (rv)) {
// No name entry was found. No problem.
}
rv = GetChromeResource(base, chromeResource, kCHROME_base);
if (NS_FAILED(rv))
{
// No base entry was found, default it to our cache.
base = "resource:/chrome/";
base += package;
if ((base.CharAt(base.Length()-1) != '/') && *provider != '/')
base += '/';
base += provider;
if (base.CharAt(base.Length()-1) != '/')
base += '/';
if (name.Length())
base += name;
if (base.CharAt(base.Length()-1) != '/')
base += '/';
}
NS_ASSERTION(base.CharAt(base.Length()-1) == '/', "Base doesn't end in a slash!");
if ('/' != base.CharAt(base.Length()-1))
base += '/';
// Now we construct our finalString
nsAutoString finalString(base);
if (!remaining || (0 == PL_strlen(remaining)))
{
rv = GetChromeResource(main, chromeResource, kCHROME_main);
if (NS_FAILED(rv))
{
//we'd definitely need main for an empty remaining
NS_ERROR("Unable to retrieve the main file registry entry for a chrome URL.");
return rv;
}
finalString += main;
}
else
finalString += remaining;
char* finalURI = finalString.ToNewCString();
aChromeURL->SetSpec(finalURI);
/*
#ifndef NECKO
// Clean out possible // in the path
char* path;
rv = aChromeURL->GetPath(&path);
char* cleanPath = path;
for (; '\0' != *path; ++path)
{
if (*path == '/' && *(path+1) == '/')
++path;
*cleanPath++ = *path;
}
aChrome->SetRelativePath(path);
nsCRT::free(path);
#endif
*/
nsCRT::free(finalURI);
return NS_OK;
}
#else
{
nsresult rv = NS_OK;
// Retrieve the resource for this chrome element.
const char* host;
if (NS_FAILED(rv = aChromeURL->GetHost(&host))) {
NS_ERROR("Unable to retrieve the host for a chrome URL.");
return rv;
}
nsAutoString hostStr(host);
const char* file;
// Construct a chrome URL and use it to look up a resource.
nsAutoString windowType = nsAutoString("chrome://") + hostStr + "/";
// Stash any search part of the URL for later
aChromeURL->GetSearch(&file);
nsAutoString searchStr(file);
// Find out the package type of the URL
aChromeURL->GetFile(&file);
nsAutoString restOfURL(file);
// Find the second slash.
nsAutoString packageType("content");
nsAutoString path("");
PRInt32 slashIndex = -1;
if (restOfURL.Length() > 1)
{
// There is something to the right of that slash. A provider type must have
// been specified.
slashIndex = restOfURL.FindChar('/', PR_FALSE,1);
if (slashIndex == -1)
slashIndex = restOfURL.Length();
restOfURL.Mid(packageType, 1, slashIndex - 1);
if (slashIndex < restOfURL.Length()-1)
{
// There are some extra subdirectories to remember.
restOfURL.Right(path, restOfURL.Length()-slashIndex-1);
}
}
windowType += packageType + "/";
// We have the resource URI that we wish to retrieve. Fetch it.
nsCOMPtr<nsIRDFResource> chromeResource;
if (NS_FAILED(rv = GetPackageTypeResource(windowType, getter_AddRefs(chromeResource)))) {
NS_ERROR("Unable to retrieve the resource corresponding to the chrome skin or content.");
return rv;
}
nsAutoString chromeName;
if (NS_FAILED(rv = GetChromeResource(chromeName, chromeResource, kCHROME_name))) {
// No name entry was found. Don't use one.
chromeName = "";
}
nsAutoString chromeBase;
if (NS_FAILED(rv = GetChromeResource(chromeBase, chromeResource, kCHROME_base))) {
// No base entry was found. Default to our cache.
chromeBase = "resource:/chrome/";
chromeBase += hostStr;
chromeBase += "/";
chromeBase += packageType + "/";
if (chromeName != "")
chromeBase += chromeName + "/";
}
// Make sure base ends in a slash
PRInt32 length = chromeBase.Length();
if (length > 0)
{
PRUnichar c = chromeBase.CharAt(length-1);
if (c != '/')
chromeBase += "/"; // Ensure that a slash is present.
}
// Check to see if we should append the "main" entry in the registry.
// Only do this when the user doesn't have anything following "skin"
// or "content" in the specified URL.
if (path.IsEmpty())
{
PRInt32 length = restOfURL.Length();
if (length > 0)
{
PRUnichar c = restOfURL.CharAt(length-1);
if (c != '/')
restOfURL += "/"; // Ensure that a slash is present.
}
// Append the "main" entry.
nsAutoString mainFile;
if (NS_FAILED(rv = GetChromeResource(mainFile, chromeResource, kCHROME_main))) {
NS_ERROR("Unable to retrieve the main file registry entry for a chrome URL.");
return rv;
}
chromeBase += mainFile;
}
else
{
// XXX Just append the rest of the URL to base to get the actual URL to look up.
chromeBase += path;
}
char* finalDecision = chromeBase.ToNewCString();
char* search = searchStr.ToNewCString();
aChromeURL->SetSpec(finalDecision);
if (search && *search) {
aChromeURL->SetSearch(search);
nsCRT::free(search);
}
}
#endif
NS_IMETHODIMP
nsChromeRegistry::InitRegistry()
{
gRefCnt++;
if (gRefCnt == 1) {
nsresult rv;
rv = nsServiceManager::GetService(kRDFServiceCID,
kIRDFServiceIID,
(nsISupports**)&gRDFService);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get RDF service");
if (NS_FAILED(rv)) return rv;
// get all the properties we'll need:
rv = gRDFService->GetResource(kURICHROME_chrome, &kCHROME_chrome);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get resource");
if (NS_FAILED(rv)) return rv;
rv = gRDFService->GetResource(kURICHROME_skin, &kCHROME_skin);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get resource");
if (NS_FAILED(rv)) return rv;
rv = gRDFService->GetResource(kURICHROME_content, &kCHROME_content);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get resource");
if (NS_FAILED(rv)) return rv;
rv = gRDFService->GetResource(kURICHROME_content, &kCHROME_platform);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get resource");
if (NS_FAILED(rv)) return rv;
rv = gRDFService->GetResource(kURICHROME_content, &kCHROME_locale);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get resource");
if (NS_FAILED(rv)) return rv;
rv = gRDFService->GetResource(kURICHROME_content, &kCHROME_behavior);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get resource");
if (NS_FAILED(rv)) return rv;
rv = gRDFService->GetResource(kURICHROME_base, &kCHROME_base);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get resource");
if (NS_FAILED(rv)) return rv;
rv = gRDFService->GetResource(kURICHROME_main, &kCHROME_main);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get resource");
if (NS_FAILED(rv)) return rv;
rv = gRDFService->GetResource(kURICHROME_archive, &kCHROME_archive);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get resource");
if (NS_FAILED(rv)) return rv;
rv = gRDFService->GetResource(kURICHROME_name, &kCHROME_name);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get resource");
if (NS_FAILED(rv)) return rv;
rv = gRDFService->GetResource(kURICHROME_displayname, &kCHROME_displayname);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get resource");
if (NS_FAILED(rv)) return rv;
rv = nsComponentManager::CreateInstance(kRDFXMLDataSourceCID,
nsnull,
nsIRDFDataSource::GetIID(),
(void**) &mInner);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIRDFRemoteDataSource> remote = do_QueryInterface(mInner);
if (! remote)
return NS_ERROR_UNEXPECTED;
// Retrieve the mInner data source.
nsSpecialSystemDirectory chromeFile(nsSpecialSystemDirectory::OS_CurrentProcessDirectory);
chromeFile += "chrome";
chromeFile += "registry.rdf";
nsFileURL chromeURL(chromeFile);
const char* innerURI = chromeURL.GetAsString();
rv = remote->Init(innerURI);
if (NS_FAILED(rv)) return rv;
}
nsCOMPtr<nsIRDFRemoteDataSource> remote = do_QueryInterface(mInner);
if (! remote)
return NS_ERROR_UNEXPECTED;
// We need to read this synchronously.
nsresult rv = remote->Refresh(PR_TRUE);
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// nsIRDFObserver methods:
////////////////////////////////////////////////////////////////////////////////
nsresult
nsChromeRegistry::GetPackageTypeResource(const nsString& aChromeType,
nsIRDFResource** aResult)
{
nsresult rv = NS_OK;
char* url = aChromeType.ToNewCString();
if (NS_FAILED(rv = gRDFService->GetResource(url, aResult))) {
NS_ERROR("Unable to retrieve a resource for this package type.");
*aResult = nsnull;
nsCRT::free(url);
return rv;
}
nsCRT::free(url);
return NS_OK;
}
nsresult
nsChromeRegistry::GetChromeResource(nsString& aResult,
nsIRDFResource* aChromeResource,
nsIRDFResource* aProperty)
{
nsresult rv = NS_OK;
if (mInner == nsnull)
return NS_ERROR_FAILURE; // Must have a DB to attempt this operation.
nsCOMPtr<nsIRDFNode> chromeBase;
if (NS_FAILED(rv = GetTarget(aChromeResource, aProperty, PR_TRUE, getter_AddRefs(chromeBase)))) {
NS_ERROR("Unable to obtain a base resource.");
return rv;
}
if (chromeBase == nsnull)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIRDFResource> resource;
nsCOMPtr<nsIRDFLiteral> literal;
if (NS_SUCCEEDED(rv = chromeBase->QueryInterface(kIRDFResourceIID,
(void**) getter_AddRefs(resource)))) {
nsXPIDLCString uri;
resource->GetValue( getter_Copies(uri) );
aResult = uri;
}
else if (NS_SUCCEEDED(rv = chromeBase->QueryInterface(kIRDFLiteralIID,
(void**) getter_AddRefs(literal)))) {
nsXPIDLString s;
literal->GetValue( getter_Copies(s) );
aResult = s;
}
else {
// This should _never_ happen.
NS_ERROR("uh, this isn't a resource or a literal!");
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
nsresult
NS_NewChromeRegistry(nsIChromeRegistry** aResult)
{
NS_PRECONDITION(aResult != nsnull, "null ptr");
if (! aResult)
return NS_ERROR_NULL_POINTER;
nsChromeRegistry* chromeRegistry = new nsChromeRegistry();
if (chromeRegistry == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(chromeRegistry);
*aResult = chromeRegistry;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// nsIRDFDataSource methods
NS_IMETHODIMP
nsChromeRegistry::GetURI(char** uri)
{
*uri = nsXPIDLCString::Copy("rdf:chrome");
if (! *uri)
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
NS_IMETHODIMP
nsChromeRegistry::GetSource(nsIRDFResource* property,
nsIRDFNode* target,
PRBool tv,
nsIRDFResource** source /* out */)
{
return mInner->GetSource(property, target, tv, source);
}
NS_IMETHODIMP
nsChromeRegistry::GetSources(nsIRDFResource* property,
nsIRDFNode* target,
PRBool tv,
nsISimpleEnumerator** sources /* out */)
{
return mInner->GetSources(property, target, tv, sources);
}
NS_IMETHODIMP
nsChromeRegistry::GetTarget(nsIRDFResource* source,
nsIRDFResource* property,
PRBool tv,
nsIRDFNode** target /* out */)
{
return mInner->GetTarget(source, property, tv, target);
}
NS_IMETHODIMP
nsChromeRegistry::GetTargets(nsIRDFResource* source,
nsIRDFResource* property,
PRBool tv,
nsISimpleEnumerator** targets /* out */)
{
return mInner->GetTargets(source, property, tv, targets);
}
NS_IMETHODIMP
nsChromeRegistry::Assert(nsIRDFResource* source,
nsIRDFResource* property,
nsIRDFNode* target,
PRBool tv)
{
return mInner->Assert(source, property, target, tv);
}
NS_IMETHODIMP
nsChromeRegistry::Unassert(nsIRDFResource* source,
nsIRDFResource* property,
nsIRDFNode* target)
{
return mInner->Unassert(source, property, target);
}
NS_IMETHODIMP
nsChromeRegistry::Change(nsIRDFResource* aSource,
nsIRDFResource* aProperty,
nsIRDFNode* aOldTarget,
nsIRDFNode* aNewTarget)
{
return mInner->Change(aSource, aProperty, aOldTarget, aNewTarget);
}
NS_IMETHODIMP
nsChromeRegistry::Move(nsIRDFResource* aOldSource,
nsIRDFResource* aNewSource,
nsIRDFResource* aProperty,
nsIRDFNode* aTarget)
{
return mInner->Move(aOldSource, aNewSource, aProperty, aTarget);
}
NS_IMETHODIMP
nsChromeRegistry::HasAssertion(nsIRDFResource* source,
nsIRDFResource* property,
nsIRDFNode* target,
PRBool tv,
PRBool* hasAssertion /* out */)
{
return mInner->HasAssertion(source, property, target, tv, hasAssertion);
}
NS_IMETHODIMP nsChromeRegistry::AddObserver(nsIRDFObserver* n)
{
return mInner->AddObserver(n);
}
NS_IMETHODIMP nsChromeRegistry::RemoveObserver(nsIRDFObserver* n)
{
return mInner->RemoveObserver(n);
}
NS_IMETHODIMP nsChromeRegistry::ArcLabelsIn(nsIRDFNode* node,
nsISimpleEnumerator** labels /* out */)
{
return mInner->ArcLabelsIn(node, labels);
}
NS_IMETHODIMP nsChromeRegistry::ArcLabelsOut(nsIRDFResource* source,
nsISimpleEnumerator** labels /* out */)
{
return mInner->ArcLabelsOut(source, labels);
}
NS_IMETHODIMP nsChromeRegistry::GetAllResources(nsISimpleEnumerator** aCursor)
{
return mInner->GetAllResources(aCursor);
}
NS_IMETHODIMP
nsChromeRegistry::GetAllCommands(nsIRDFResource* source,
nsIEnumerator/*<nsIRDFResource>*/** commands)
{
return mInner->GetAllCommands(source, commands);
}
NS_IMETHODIMP
nsChromeRegistry::GetAllCmds(nsIRDFResource* source,
nsISimpleEnumerator/*<nsIRDFResource>*/** commands)
{
return mInner->GetAllCmds(source, commands);
}
NS_IMETHODIMP
nsChromeRegistry::IsCommandEnabled(nsISupportsArray/*<nsIRDFResource>*/* aSources,
nsIRDFResource* aCommand,
nsISupportsArray/*<nsIRDFResource>*/* aArguments,
PRBool* retVal)
{
return mInner->IsCommandEnabled(aSources, aCommand, aArguments, retVal);
}
NS_IMETHODIMP
nsChromeRegistry::DoCommand(nsISupportsArray/*<nsIRDFResource>*/* aSources,
nsIRDFResource* aCommand,
nsISupportsArray/*<nsIRDFResource>*/* aArguments)
{
return mInner->DoCommand(aSources, aCommand, aArguments);
}
////////////////////////////////////////////////////////////////////////
// nsIRDFRemoteDataSource methods
NS_IMETHODIMP
nsChromeRegistry::Init(const char* aURI)
{
return NS_OK;
}
NS_IMETHODIMP
nsChromeRegistry::Refresh(PRBool aBlocking)
{
nsCOMPtr<nsIRDFRemoteDataSource> remote = do_QueryInterface(mInner);
if (! remote)
return NS_ERROR_UNEXPECTED;
return remote->Refresh(aBlocking);
}
NS_IMETHODIMP
nsChromeRegistry::Flush()
{
nsCOMPtr<nsIRDFRemoteDataSource> remote = do_QueryInterface(mInner);
if (! remote)
return NS_ERROR_UNEXPECTED;
return remote->Flush();
}
////////////////////////////////////////////////////////////////////////
//
// Path = provider/remaining
//
void BreakProviderAndRemainingFromPath(const char* i_path, char** o_provider, char** o_remaining)
{
if (!i_path || !o_provider || !o_remaining)
return;
int len = PL_strlen(i_path);
NS_ASSERTION(len>1, "path is messed up!");
char* slash = PL_strchr(i_path+1, '/'); // +1 to skip the leading slash if any
if (slash)
{
*o_provider = PL_strndup(i_path, (slash - i_path)); // dont include the trailing slash
if (slash != (i_path + len-1)) // if that was not the last trailing slash...
{
// don't include the leading slash here as well...
*o_remaining = PL_strndup(slash+1, len - (slash-i_path + 1));
}
else
*o_remaining = nsnull;
}
else // everything is just the provider
*o_provider = PL_strndup(i_path, len);
}