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/nsSample.cpp
+++ b/mozilla/xpcom/sample/nsSample.cpp
@@ -0,0 +1,142 @@
+/* -*- 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 an implementation of
+  nsISample.
+
+*/
+#include "nscore.h"
+#include "nsISample.h"
+#include "nsIAllocator.h"
+#include "plstr.h"
+#include "stdio.h"
+
+class SampleImpl : public nsISample
+{
+public:
+    SampleImpl();
+    virtual ~SampleImpl();
+
+    // nsISupports interface
+    NS_DECL_ISUPPORTS
+
+    // nsISample interface
+    NS_IMETHOD GetValue(char * *aValue);
+    NS_IMETHOD SetValue(char * aValue);
+
+    NS_IMETHOD WriteValue(const char *aPrefix);
+
+    NS_IMETHOD Poke(const char* aValue);
+
+private:
+    char* mValue;
+};
+
+////////////////////////////////////////////////////////////////////////
+
+nsresult
+NS_NewSample(nsISample** aSample)
+{
+    NS_PRECONDITION(aSample != nsnull, "null ptr");
+    if (! aSample)
+        return NS_ERROR_NULL_POINTER;
+
+    *aSample = new SampleImpl();
+    if (! *aSample)
+        return NS_ERROR_OUT_OF_MEMORY;
+
+    NS_ADDREF(*aSample);
+    return NS_OK;
+}
+
+////////////////////////////////////////////////////////////////////////
+
+
+SampleImpl::SampleImpl() : mValue(nsnull)
+{
+    NS_INIT_REFCNT();
+    mValue = PL_strdup("initial value");
+}
+
+
+SampleImpl::~SampleImpl()
+{
+    if (mValue)
+        PL_strfree(mValue);
+}
+
+
+
+NS_IMPL_ISUPPORTS(SampleImpl, nsISample::GetIID());
+
+
+NS_IMETHODIMP
+SampleImpl::GetValue(char** aValue)
+{
+    NS_PRECONDITION(aValue != nsnull, "null ptr");
+    if (! aValue)
+        return NS_ERROR_NULL_POINTER;
+
+    if (mValue) {
+        *aValue = (char*) nsAllocator::Alloc(PL_strlen(mValue) + 1);
+        if (! *aValue)
+            return NS_ERROR_NULL_POINTER;
+
+        PL_strcpy(*aValue, mValue);
+    }
+    else {
+        *aValue = nsnull;
+    }
+    return NS_OK;
+}
+
+
+NS_IMETHODIMP
+SampleImpl::SetValue(char* aValue)
+{
+    NS_PRECONDITION(aValue != nsnull, "null ptr");
+    if (! aValue)
+        return NS_ERROR_NULL_POINTER;
+
+    if (mValue) {
+        PL_strfree(mValue);
+    }
+
+    mValue = PL_strdup(aValue);
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+SampleImpl::Poke(const char* aValue)
+{
+    return SetValue((char*) aValue);
+}
+
+NS_IMETHODIMP
+SampleImpl::WriteValue(const char* aPrefix)
+{
+    NS_PRECONDITION(aPrefix != nsnull, "null ptr");
+    if (! aPrefix)
+        return NS_ERROR_NULL_POINTER;
+
+    printf("%s %s\n", aPrefix, mValue);
+    return NS_OK;
+}