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Diffstat (limited to 'src/libs/xpcom18a4/xpcom/sample/nsSample.h')
-rw-r--r-- | src/libs/xpcom18a4/xpcom/sample/nsSample.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/sample/nsSample.h b/src/libs/xpcom18a4/xpcom/sample/nsSample.h new file mode 100644 index 00000000..40dec0b3 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/sample/nsSample.h @@ -0,0 +1,129 @@ +/* -*- Mode: C++; tab-width: 4; 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): + * + * 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 ***** */ + +/** + * A sample of XPConnect. This file is the header of an implementation + * nsSample of the nsISample interface. + * + */ + +#include "nsISample.h" + +/** + * SampleImpl is an implementation of the nsISample interface. In XPCOM, + * there can be more than one implementation of an given interface. Class + * IDs (CIDs) uniquely identify a particular implementation of an interface. + * Interface IDs (IIDs) uniquely identify an interface. + * + * The CID is also a unique number that looks just like an IID + * and uniquely identifies an implementation + * {7CB5B7A0-07D7-11d3-BDE2-000064657374} + */ + +#define NS_SAMPLE_CID \ +{ 0x7cb5b7a0, 0x7d7, 0x11d3, { 0xbd, 0xe2, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74 } } + +#define NS_SAMPLE_CONTRACTID "@mozilla.org/sample;1" + + +class nsSampleImpl : public nsISample +{ +public: + nsSampleImpl(); + + /** + * This macro expands into a declaration of the nsISupports interface. + * Every XPCOM component needs to implement nsISupports, as it acts + * as the gateway to other interfaces this component implements. You + * could manually declare QueryInterface, AddRef, and Release instead + * of using this macro, but why? + */ + // nsISupports interface + NS_DECL_ISUPPORTS + + /** + * This macro is defined in the nsISample.h file, and is generated + * automatically by the xpidl compiler. It expands to + * declarations of all of the methods required to implement the + * interface. xpidl will generate a NS_DECL_[INTERFACENAME] macro + * for each interface that it processes. + * + * The methods of nsISample are discussed individually below, but + * commented out (because this macro already defines them.) + */ + NS_DECL_NSISAMPLE + + /** + * The following is an explanation of how the interface header + * file expands to for a c++ implementation. NS_DELC_NSISAMPLE + * takes care of defining the right c++ implementation. + * + * The following if provided for more understanding. + * + * NS_IMETHOD expands to the standard XPCOM return type. XPCOM methods + * should never return any other type. The return value is used + * behind the scenes by the XPConnect runtime to figure out if the call + * failed in any way. + * These methods were generated by "attribute string Value" in + * nsISample.idl. When reflected into JavaScript, XPCOM will use these + * calls as Getter/Setter ops, so that they can be called transparently + * as "sample.Value='foo';" and "var val = sample.Value" + */ + /* NS_IMETHOD GetValue(char * *aValue); */ + /* NS_IMETHOD SetValue(char * aValue); */ + + /** + * The const came from the "in" specifier in nsISample.idl. "in" + * specifies that the value of this parameter is used only for input, + * this method is not allowed to modify the contents of the buffer. + */ + /* NS_IMETHOD WriteValue(const char *aPrefix); */ + + /** + * nsISample.idl specifies all of it's string types as string, instead + * of wstring (wide string), the Unicode type. If the world were a + * perfect place, all normal strings in XPCOM interfaces would be unicode. + * If this type had been specified as wstring, it would appear as + * PRUnichar * in C++, which is the NSPR type for unicode characters. + */ + /* NS_IMETHOD Poke(const char* aValue); */ + +private: + ~nsSampleImpl(); + + char* mValue; +}; |