63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef mozilla_AppData_h
|
|
#define mozilla_AppData_h
|
|
|
|
#include "nsXREAppData.h"
|
|
#include "nscore.h"
|
|
#include "nsStringGlue.h"
|
|
#include "nsISupportsUtils.h"
|
|
|
|
namespace mozilla {
|
|
|
|
// Like nsXREAppData, but releases all strong refs/allocated memory
|
|
// in the destructor.
|
|
class ScopedAppData : public nsXREAppData
|
|
{
|
|
public:
|
|
ScopedAppData()
|
|
{
|
|
Zero();
|
|
this->size = sizeof(*this);
|
|
}
|
|
|
|
explicit ScopedAppData(const nsXREAppData* aAppData);
|
|
|
|
void Zero() { memset(this, 0, sizeof(*this)); }
|
|
|
|
~ScopedAppData();
|
|
};
|
|
|
|
/**
|
|
* Given |aStr| is holding a string allocated with NS_Alloc, or null:
|
|
* replace the value in |aStr| with a new value.
|
|
*
|
|
* @param aNewValue Null is permitted. The string is cloned with NS_strdup.
|
|
*/
|
|
void SetAllocatedString(const char*& aStr, const char* aNewValue);
|
|
|
|
/**
|
|
* Given "str" is holding a string allocated with NS_Alloc, or null:
|
|
* replace the value in "str" with a new value.
|
|
*
|
|
* @param aNewValue If |aNewValue| is the empty string, |aStr| will be set
|
|
* to null.
|
|
*/
|
|
void SetAllocatedString(const char*& aStr, const nsACString& aNewValue);
|
|
|
|
template<class T>
|
|
void
|
|
SetStrongPtr(T*& aPtr, T* aNewValue)
|
|
{
|
|
NS_IF_RELEASE(aPtr);
|
|
aPtr = aNewValue;
|
|
NS_IF_ADDREF(aPtr);
|
|
}
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif
|