RetroZilla/modules/plugin/tools/sdk/samples/simple/nsScriptablePeer.cpp
2015-10-20 23:03:22 -04:00

124 lines
3.7 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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*
* The contents of this file are subject to the Mozilla Public License Version
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*
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* 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
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* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
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* Contributor(s):
*
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// ==============================
// ! Scriptability related code !
// ==============================
/////////////////////////////////////////////////////
//
// This file implements the nsScriptablePeer object
// The native methods of this class are supposed to
// be callable from JavaScript
//
#include "plugin.h"
static NS_DEFINE_IID(kISimplePluginIID, NS_ISIMPLEPLUGIN_IID);
static NS_DEFINE_IID(kIClassInfoIID, NS_ICLASSINFO_IID);
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
nsScriptablePeer::nsScriptablePeer(nsPluginInstance* aPlugin)
{
mPlugin = aPlugin;
mRefCnt = 0;
}
nsScriptablePeer::~nsScriptablePeer()
{
}
// AddRef, Release and QueryInterface are common methods and must
// be implemented for any interface
NS_IMETHODIMP_(nsrefcnt) nsScriptablePeer::AddRef()
{
++mRefCnt;
return mRefCnt;
}
NS_IMETHODIMP_(nsrefcnt) nsScriptablePeer::Release()
{
--mRefCnt;
if (mRefCnt == 0) {
delete this;
return 0;
}
return mRefCnt;
}
// here nsScriptablePeer should return three interfaces it can be asked for by their iid's
// static casts are necessary to ensure that correct pointer is returned
NS_IMETHODIMP nsScriptablePeer::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
if(!aInstancePtr)
return NS_ERROR_NULL_POINTER;
if(aIID.Equals(kISimplePluginIID)) {
*aInstancePtr = NS_STATIC_CAST(nsISimplePlugin*, this);
AddRef();
return NS_OK;
}
if(aIID.Equals(kIClassInfoIID)) {
*aInstancePtr = NS_STATIC_CAST(nsIClassInfo*, this);
AddRef();
return NS_OK;
}
if(aIID.Equals(kISupportsIID)) {
*aInstancePtr = NS_STATIC_CAST(nsISupports*,(NS_STATIC_CAST(nsISimplePlugin*, this)));
AddRef();
return NS_OK;
}
return NS_NOINTERFACE;
}
void nsScriptablePeer::SetInstance(nsPluginInstance* plugin)
{
mPlugin = plugin;
}
//
// the following method will be callable from JavaScript
//
NS_IMETHODIMP nsScriptablePeer::GetVersion(char * *aVersion)
{
if (mPlugin)
mPlugin->getVersion(aVersion);
return NS_OK;
}