Version 1.8 of gecko-sdk. Downloaded from here:...

gecko-sdk/include/nsXPCOM.h

Index: gecko-sdk/include/nsXPCOM.h
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--- gecko-sdk/include/nsXPCOM.h	(revision 0)
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Benjamin Smedberg <benjamin@smedbergs.us>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef nsXPCOM_h__
+#define nsXPCOM_h__
+
+// Map frozen functions to private symbol names if not using strict API.
+#ifdef MOZILLA_INTERNAL_API
+# define NS_InitXPCOM2               NS_InitXPCOM2_P
+# define NS_InitXPCOM3               NS_InitXPCOM3_P
+# define NS_ShutdownXPCOM            NS_ShutdownXPCOM_P
+# define NS_GetServiceManager        NS_GetServiceManager_P
+# define NS_GetComponentManager      NS_GetComponentManager_P
+# define NS_GetComponentRegistrar    NS_GetComponentRegistrar_P
+# define NS_GetMemoryManager         NS_GetMemoryManager_P
+# define NS_NewLocalFile             NS_NewLocalFile_P
+# define NS_NewNativeLocalFile       NS_NewNativeLocalFile_P
+# define NS_GetDebug                 NS_GetDebug_P
+# define NS_GetTraceRefcnt           NS_GetTraceRefcnt_P
+# define NS_Alloc                    NS_Alloc_P
+# define NS_Realloc                  NS_Realloc_P
+# define NS_Free                     NS_Free_P
+#endif
+
+#include "nscore.h"
+#include "nsXPCOMCID.h"
+
+class nsAString;
+class nsACString;
+
+class nsIModule;
+class nsIComponentManager;
+class nsIComponentRegistrar;
+class nsIServiceManager;
+class nsIFile;
+class nsILocalFile;
+class nsIDirectoryServiceProvider;
+class nsIMemory;
+class nsIDebug;
+class nsITraceRefcnt;
+
+/**
+ * Every XPCOM component implements this function signature, which is the
+ * only entrypoint XPCOM uses to the function.
+ *
+ * @status FROZEN
+ */
+typedef nsresult (PR_CALLBACK *nsGetModuleProc)(nsIComponentManager *aCompMgr,
+                                                nsIFile* location,
+                                                nsIModule** return_cobj);
+
+/**
+ * Initialises XPCOM. You must call one of the NS_InitXPCOM methods
+ * before proceeding to use xpcom. The one exception is that you may
+ * call NS_NewLocalFile to create a nsIFile.
+ * 
+ * @status FROZEN
+ *
+ * @note Use <CODE>NS_NewLocalFile</CODE> or <CODE>NS_NewNativeLocalFile</CODE> 
+ *       to create the file object you supply as the bin directory path in this
+ *       call. The function may be safely called before the rest of XPCOM or 
+ *       embedding has been initialised.
+ *
+ * @param result           The service manager.  You may pass null.
+ *
+ * @param binDirectory     The directory containing the component
+ *                         registry and runtime libraries;
+ *                         or use <CODE>nsnull</CODE> to use the working
+ *                         directory.
+ *
+ * @param appFileLocationProvider The object to be used by Gecko that specifies
+ *                         to Gecko where to find profiles, the component
+ *                         registry preferences and so on; or use
+ *                         <CODE>nsnull</CODE> for the default behaviour.
+ *
+ * @see NS_NewLocalFile
+ * @see nsILocalFile
+ * @see nsIDirectoryServiceProvider
+ *
+ * @return NS_OK for success;
+ *         NS_ERROR_NOT_INITIALIZED if static globals were not initialized,
+ *         which can happen if XPCOM is reloaded, but did not completly
+ *         shutdown. Other error codes indicate a failure during
+ *         initialisation.
+ */
+extern "C" NS_COM nsresult
+NS_InitXPCOM2(nsIServiceManager* *result, 
+              nsIFile* binDirectory,
+              nsIDirectoryServiceProvider* appFileLocationProvider);
+
+/**
+ * Some clients of XPCOM have statically linked components (not dynamically
+ * loaded component DLLs), which can be passed to NS_InitXPCOM3 using this
+ * structure.
+ *
+ * @status FROZEN
+ */
+struct nsStaticModuleInfo {
+  const char      *name;
+  nsGetModuleProc  getModule;
+};
+
+/**
+ * Initialises XPCOM with static components. You must call one of the
+ * NS_InitXPCOM methods before proceeding to use xpcom. The one
+ * exception is that you may call NS_NewLocalFile to create a nsIFile.
+ * 
+ * @status FROZEN
+ *
+ * @note Use <CODE>NS_NewLocalFile</CODE> or <CODE>NS_NewNativeLocalFile</CODE> 
+ *       to create the file object you supply as the bin directory path in this
+ *       call. The function may be safely called before the rest of XPCOM or 
+ *       embedding has been initialised.
+ *
+ * @param result           The service manager.  You may pass null.
+ *
+ * @param binDirectory     The directory containing the component
+ *                         registry and runtime libraries;
+ *                         or use <CODE>nsnull</CODE> to use the working
+ *                         directory.
+ *
+ * @param appFileLocationProvider The object to be used by Gecko that specifies
+ *                         to Gecko where to find profiles, the component
+ *                         registry preferences and so on; or use
+ *                         <CODE>nsnull</CODE> for the default behaviour.
+ *
+ * @param staticComponents An array of static components. Passing null causes
+ *                         default (builtin) components to be registered, if
+ *                         present.
+ * @param componentCount   Number of elements in staticComponents
+ *
+ * @see NS_NewLocalFile
+ * @see nsILocalFile
+ * @see nsIDirectoryServiceProvider
+ * @see XRE_GetStaticComponents
+ *
+ * @return NS_OK for success;
+ *         NS_ERROR_NOT_INITIALIZED if static globals were not initialized,
+ *         which can happen if XPCOM is reloaded, but did not completly
+ *         shutdown. Other error codes indicate a failure during
+ *         initialisation.
+ */
+extern "C" NS_COM nsresult
+NS_InitXPCOM3(nsIServiceManager* *result, 
+              nsIFile* binDirectory,
+              nsIDirectoryServiceProvider* appFileLocationProvider,
+              nsStaticModuleInfo const *staticComponents,
+              PRUint32 componentCount);
+
+/**
+ * Shutdown XPCOM. You must call this method after you are finished
+ * using xpcom. 
+ *
+ * @status FROZEN
+ *
+ * @param servMgr           The service manager which was returned by NS_InitXPCOM.
+ *                          This will release servMgr.  You may pass null.
+ *
+ * @return NS_OK for success;
+ *         other error codes indicate a failure during initialisation.
+ *
+ */
+extern "C" NS_COM nsresult
+NS_ShutdownXPCOM(nsIServiceManager* servMgr);
+
+
+/**
+ * Public Method to access to the service manager.
+ * 
+ * @status FROZEN
+ * @param result Interface pointer to the service manager 
+ *
+ * @return NS_OK for success;
+ *         other error codes indicate a failure during initialisation.
+ *
+ */
+extern "C" NS_COM nsresult
+NS_GetServiceManager(nsIServiceManager* *result);
+
+/**
+ * Public Method to access to the component manager.
+ * 
+ * @status FROZEN
+ * @param result Interface pointer to the service 
+ *
+ * @return NS_OK for success;
+ *         other error codes indicate a failure during initialisation.
+ *
+ */
+extern "C" NS_COM nsresult
+NS_GetComponentManager(nsIComponentManager* *result);
+
+/**
+ * Public Method to access to the component registration manager.
+ * 
+ * @status FROZEN
+ * @param result Interface pointer to the service 
+ *
+ * @return NS_OK for success;
+ *         other error codes indicate a failure during initialisation.
+ *
+ */
+extern "C" NS_COM nsresult
+NS_GetComponentRegistrar(nsIComponentRegistrar* *result);
+
+/**
+ * Public Method to access to the memory manager.  See nsIMemory
+ * 
+ * @status FROZEN
+ * @param result Interface pointer to the memory manager 
+ *
+ * @return NS_OK for success;
+ *         other error codes indicate a failure during initialisation.
+ *
+ */
+extern "C" NS_COM nsresult
+NS_GetMemoryManager(nsIMemory* *result);
+
+/**
+ * Public Method to create an instance of a nsILocalFile.  This function
+ * may be called prior to NS_InitXPCOM.
+ * 
+ * @status FROZEN
+ * 
+ *   @param path       
+ *       A string which specifies a full file path to a 
+ *       location.  Relative paths will be treated as an
+ *       error (NS_ERROR_FILE_UNRECOGNIZED_PATH).       
+ *       |NS_NewNativeLocalFile|'s path must be in the 
+ *       filesystem charset.
+ *   @param followLinks
+ *       This attribute will determine if the nsLocalFile will auto
+ *       resolve symbolic links.  By default, this value will be false
+ *       on all non unix systems.  On unix, this attribute is effectively
+ *       a noop.  
+ * @param result Interface pointer to a new instance of an nsILocalFile 
+ *
+ * @return NS_OK for success;
+ *         other error codes indicate a failure.
+ */
+
+extern "C" NS_COM nsresult
+NS_NewLocalFile(const nsAString &path, 
+                PRBool followLinks, 
+                nsILocalFile* *result);
+
+extern "C" NS_COM nsresult
+NS_NewNativeLocalFile(const nsACString &path, 
+                      PRBool followLinks, 
+                      nsILocalFile* *result);
+
+/**
+ * Allocates a block of memory of a particular size. If the memory cannot
+ * be allocated (because of an out-of-memory condition), null is returned.
+ *
+ * @status FROZEN
+ *
+ * @param size   The size of the block to allocate
+ * @result       The block of memory
+ * @note         This function is thread-safe.
+ */
+extern "C" NS_COM void*
+NS_Alloc(PRSize size);
+
+/**
+ * Reallocates a block of memory to a new size.
+ *
+ * @status FROZEN
+ *
+ * @param ptr     The block of memory to reallocate. This block must originally
+                  have been allocated by NS_Alloc or NS_Realloc
+ * @param size    The new size. If 0, frees the block like NS_Free
+ * @result        The reallocated block of memory
+ * @note          This function is thread-safe.
+ *
+ * If ptr is null, this function behaves like NS_Alloc.
+ * If s is the size of the block to which ptr points, the first min(s, size)
+ * bytes of ptr's block are copied to the new block. If the allocation
+ * succeeds, ptr is freed and a pointer to the new block is returned. If the
+ * allocation fails, ptr is not freed and null is returned. The returned
+ * value may be the same as ptr.
+ */
+extern "C" NS_COM void*
+NS_Realloc(void* ptr, PRSize size);
+
+/**
+ * Frees a block of memory. Null is a permissible value, in which case no
+ * action is taken.
+ *
+ * @status FROZEN
+ *
+ * @param ptr   The block of memory to free. This block must originally have
+ *              been allocated by NS_Alloc or NS_Realloc
+ * @note        This function is thread-safe.
+ */
+extern "C" NS_COM void
+NS_Free(void* ptr);
+
+
+/**
+ * Categories (in the category manager service) used by XPCOM:
+ */
+
+/**
+ * A category which is read after component registration but before
+ * the "xpcom-startup" notifications. Each category entry is treated
+ * as the contract ID of a service which implements
+ * nsIDirectoryServiceProvider. Each directory service provider is
+ * installed in the global directory service.
+ *
+ * @status FROZEN
+ */
+#define XPCOM_DIRECTORY_PROVIDER_CATEGORY "xpcom-directory-providers"
+
+/**
+ * A category which is read after component registration but before
+ * NS_InitXPCOM returns. Each category entry is treated as the contractID of
+ * a service: each service is instantiated, and if it implements nsIObserver
+ * the nsIObserver.observe method is called with the "xpcom-startup" topic.
+ *
+ * @status FROZEN
+ */
+#define NS_XPCOM_STARTUP_CATEGORY "xpcom-startup"
+
+
+/**
+ * Observer topics (in the observer service) used by XPCOM:
+ */
+
+/**
+ * At XPCOM startup after component registration is complete, the
+ * following topic is notified. In order to receive this notification,
+ * component must register their contract ID in the category manager,
+ *
+ * @see NS_XPCOM_STARTUP_CATEGORY
+ * @status FROZEN
+ */
+#define NS_XPCOM_STARTUP_OBSERVER_ID "xpcom-startup"
+
+/**
+ * At XPCOM shutdown, this topic is notified. All components must
+ * release any interface references to objects in other modules when
+ * this topic is notified.
+ *
+ * @status FROZEN
+ */
+#define NS_XPCOM_SHUTDOWN_OBSERVER_ID "xpcom-shutdown"
+
+/**
+ * This topic is notified when an entry was added to a category in the
+ * category manager. The subject of the notification will be the name of
+ * the added entry as an nsISupportsCString, and the data will be the
+ * name of the category.
+ *
+ * @status FROZEN
+ */
+#define NS_XPCOM_CATEGORY_ENTRY_ADDED_OBSERVER_ID \
+  "xpcom-category-entry-added"
+
+/**
+ * This topic is notified when an entry was removed from a category in the
+ * category manager. The subject of the notification will be the name of
+ * the removed entry as an nsISupportsCString, and the data will be the
+ * name of the category.
+ *
+ * @status FROZEN
+ */
+#define NS_XPCOM_CATEGORY_ENTRY_REMOVED_OBSERVER_ID \
+  "xpcom-category-entry-removed"
+
+/**
+ * This topic is notified when an a category was cleared in the category
+ * manager. The subject of the notification will be the category manager,
+ * and the data will be the name of the cleared category.
+ *
+ * @status FROZEN
+ */
+#define NS_XPCOM_CATEGORY_CLEARED_OBSERVER_ID "xpcom-category-cleared"
+
+extern "C" NS_COM nsresult
+NS_GetDebug(nsIDebug* *result);
+
+extern "C" NS_COM nsresult
+NS_GetTraceRefcnt(nsITraceRefcnt* *result);
+
+#endif
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