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comparison: xpcom/glue/AppData.h
xpcom/glue/AppData.h
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef mozilla_AppData_h | |
| 7 #define mozilla_AppData_h | |
| 8 | |
| 9 #include "nsXREAppData.h" | |
| 10 #include "nscore.h" | |
| 11 #include "nsStringGlue.h" | |
| 12 #include "nsISupportsUtils.h" | |
| 13 | |
| 14 namespace mozilla { | |
| 15 | |
| 16 // Like nsXREAppData, but releases all strong refs/allocated memory | |
| 17 // in the destructor. | |
| 18 class NS_COM_GLUE ScopedAppData : public nsXREAppData | |
| 19 { | |
| 20 public: | |
| 21 ScopedAppData() { Zero(); this->size = sizeof(*this); } | |
| 22 | |
| 23 ScopedAppData(const nsXREAppData* aAppData); | |
| 24 | |
| 25 void Zero() { memset(this, 0, sizeof(*this)); } | |
| 26 | |
| 27 ~ScopedAppData(); | |
| 28 }; | |
| 29 | |
| 30 /** | |
| 31 * Given "str" is holding a string allocated with NS_Alloc, or null: | |
| 32 * replace the value in "str" with a new value. | |
| 33 * | |
| 34 * @param newvalue Null is permitted. The string is cloned with | |
| 35 * NS_strdup | |
| 36 */ | |
| 37 void SetAllocatedString(const char *&str, const char *newvalue); | |
| 38 | |
| 39 /** | |
| 40 * Given "str" is holding a string allocated with NS_Alloc, or null: | |
| 41 * replace the value in "str" with a new value. | |
| 42 * | |
| 43 * @param newvalue If "newvalue" is the empty string, "str" will be set | |
| 44 * to null. | |
| 45 */ | |
| 46 void SetAllocatedString(const char *&str, const nsACString &newvalue); | |
| 47 | |
| 48 template<class T> | |
| 49 void SetStrongPtr(T *&ptr, T* newvalue) | |
| 50 { | |
| 51 NS_IF_RELEASE(ptr); | |
| 52 ptr = newvalue; | |
| 53 NS_IF_ADDREF(ptr); | |
| 54 } | |
| 55 | |
| 56 } // namespace mozilla | |
| 57 | |
| 58 #endif |
