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