Initial revision.

git-svn-id: svn://10.0.0.236/trunk@31319 18797224-902f-48f8-a5cc-f745e15eee43
1999-05-12 23:37:45 +00:00
parent 915011ab3f
commit 06264f684f
4 changed files with 439 additions and 0 deletions
--- a/mozilla/xpcom/sample/nsSampleFactory.cpp
+++ b/mozilla/xpcom/sample/nsSampleFactory.cpp
@@ -0,0 +1,206 @@
+/* -*- 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.
+ */
+
+/*
+
+  A sample of XPConnect. This file contains the XPCOM factory the
+  creates for SampleImpl objects.
+
+*/
+
+#include "nsCOMPtr.h"
+#include "nscore.h"
+#include "nsISample.h"
+#include "nsIComponentManager.h"
+#include "nsIServiceManager.h"
+#include "nsXPComFactory.h"
+
+static NS_DEFINE_IID(kISupportsIID,        NS_ISUPPORTS_IID);
+static NS_DEFINE_IID(kIFactoryIID,         NS_IFACTORY_IID);
+static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
+static NS_DEFINE_CID(kSampleCID,            NS_SAMPLE_CID);
+
+class SampleFactoryImpl : public nsIFactory
+{
+public:
+    SampleFactoryImpl(const nsCID &aClass, const char* className, const char* progID);
+
+    // nsISupports methods
+    NS_DECL_ISUPPORTS
+
+    // nsIFactory methods
+    NS_IMETHOD CreateInstance(nsISupports *aOuter,
+                              const nsIID &aIID,
+                              void **aResult);
+
+    NS_IMETHOD LockFactory(PRBool aLock);
+
+protected:
+    virtual ~SampleFactoryImpl();
+
+protected:
+    nsCID       mClassID;
+    const char* mClassName;
+    const char* mProgID;
+};
+
+////////////////////////////////////////////////////////////////////////
+
+SampleFactoryImpl::SampleFactoryImpl(const nsCID &aClass, 
+                                   const char* className,
+                                   const char* progID)
+    : mClassID(aClass), mClassName(className), mProgID(progID)
+{
+    NS_INIT_REFCNT();
+}
+
+SampleFactoryImpl::~SampleFactoryImpl()
+{
+    NS_ASSERTION(mRefCnt == 0, "non-zero refcnt at destruction");
+}
+
+NS_IMETHODIMP
+SampleFactoryImpl::QueryInterface(const nsIID &aIID, void **aResult)
+{
+    if (! aResult)
+        return NS_ERROR_NULL_POINTER;
+
+    // Always NULL result, in case of failure
+    *aResult = nsnull;
+
+    if (aIID.Equals(kISupportsIID)) {
+        *aResult = NS_STATIC_CAST(nsISupports*, this);
+        AddRef();
+        return NS_OK;
+    } else if (aIID.Equals(kIFactoryIID)) {
+        *aResult = NS_STATIC_CAST(nsIFactory*, this);
+        AddRef();
+        return NS_OK;
+    }
+    return NS_NOINTERFACE;
+}
+
+NS_IMPL_ADDREF(SampleFactoryImpl);
+NS_IMPL_RELEASE(SampleFactoryImpl);
+
+NS_IMETHODIMP
+SampleFactoryImpl::CreateInstance(nsISupports *aOuter,
+                                 const nsIID &aIID,
+                                 void **aResult)
+{
+    if (! aResult)
+        return NS_ERROR_NULL_POINTER;
+
+    if (aOuter)
+        return NS_ERROR_NO_AGGREGATION;
+
+    *aResult = nsnull;
+
+    nsresult rv;
+
+    nsISupports *inst = nsnull;
+    if (mClassID.Equals(kSampleCID)) {
+        if (NS_FAILED(rv = NS_NewSample((nsISample**) &inst)))
+            return rv;
+    }
+    else {
+        return NS_ERROR_NO_INTERFACE;
+    }
+
+    if (! inst)
+        return NS_ERROR_OUT_OF_MEMORY;
+
+    if (NS_FAILED(rv = inst->QueryInterface(aIID, aResult))) {
+        // We didn't get the right interface.
+        NS_ERROR("didn't support the interface you wanted");
+    }
+
+    NS_IF_RELEASE(inst);
+    return rv;
+}
+
+nsresult SampleFactoryImpl::LockFactory(PRBool aLock)
+{
+    // Not implemented in simplest case.
+    return NS_OK;
+}
+
+////////////////////////////////////////////////////////////////////////
+
+
+
+// return the proper factory to the caller
+extern "C" PR_IMPLEMENT(nsresult)
+NSGetFactory(nsISupports* aServMgr,
+             const nsCID &aClass,
+             const char *aClassName,
+             const char *aProgID,
+             nsIFactory **aFactory)
+{
+    if (! aFactory)
+        return NS_ERROR_NULL_POINTER;
+
+    SampleFactoryImpl* factory = new SampleFactoryImpl(aClass, aClassName, aProgID);
+    if (factory == nsnull)
+        return NS_ERROR_OUT_OF_MEMORY;
+
+    NS_ADDREF(factory);
+    *aFactory = factory;
+    return NS_OK;
+}
+
+
+
+extern "C" PR_IMPLEMENT(nsresult)
+NSRegisterSelf(nsISupports* aServMgr , const char* aPath)
+{
+    nsresult rv;
+
+    nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
+    if (NS_FAILED(rv)) return rv;
+
+    NS_WITH_SERVICE(nsIComponentManager, compMgr, kComponentManagerCID, &rv);
+    if (NS_FAILED(rv)) return rv;
+
+    rv = compMgr->RegisterComponent(kSampleCID,
+                                    "Sample World Component",
+                                    "component://netscape/sample/sample-world",
+                                    aPath, PR_TRUE, PR_TRUE);
+
+    if (NS_FAILED(rv)) return rv;
+
+    return NS_OK;
+}
+
+
+extern "C" PR_IMPLEMENT(nsresult)
+NSUnregisterSelf(nsISupports* aServMgr, const char* aPath)
+{
+    nsresult rv;
+
+    nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
+    if (NS_FAILED(rv)) return rv;
+
+    NS_WITH_SERVICE(nsIComponentManager, compMgr, kComponentManagerCID, &rv);
+    if (NS_FAILED(rv)) return rv;
+
+    rv = compMgr->UnregisterComponent(kSampleCID, aPath);
+    if (NS_FAILED(rv)) return rv;
+
+    return NS_OK;
+}