зеркало из https://github.com/mozilla/gecko-dev.git
143 строки
3.0 KiB
C++
143 строки
3.0 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.
|
|
*/
|
|
|
|
|
|
/*
|
|
|
|
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;
|
|
}
|