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gecko-dev/modules/plugin/samples/simple/npsimple.cpp

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Added simple LiveConnected plugin test case that used backward adapter.
1998-07-11 01:40:24 +00:00
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/*******************************************************************************
* npsimple.cpp
******************************************************************************
* Simple LiveConnect Sample Plugin
* Copyright (c) 1996 Netscape Communications. All rights reserved.
******************************************************************************
* OVERVIEW
* --------
* Section 1 - Includes
* Section 2 - Instance Structs
* Section 3 - API Plugin Implementations
* Section 4 - Java Native Method Implementations
* Section 5 - Utility Method Implementations
*******************************************************************************/
/*******************************************************************************
* SECTION 1 - Includes
******************************************************************************/
#include <stdio.h>
#include <string.h>
#include "nsplugin.h"
#include "nsIJRILiveConnectPlugin.h"
#include "nsIJRILiveConnectPluginInstancePeer.h"
/*------------------------------------------------------------------------------
* Define IMPLEMENT_Simple before including Simple.h to state that we're
* implementing the native methods of this plug-in here, and consequently
* need to access it's protected and private memebers.
*----------------------------------------------------------------------------*/
#define IMPLEMENT_Simple
#include "Simple.h"
/*------------------------------------------------------------------------------
* Windows Includes
*----------------------------------------------------------------------------*/
#ifdef _WINDOWS /* Windows Includes */
#include <windows.h>
#endif /* _WINDOWS */
/*------------------------------------------------------------------------------
* UNIX includes
*----------------------------------------------------------------------------*/
#ifdef XP_UNIX
#include <X11/Xlib.h>
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#endif /* XP_UNIX */
/*******************************************************************************
* SECTION 2 - Instance Structs
*******************************************************************************
* Instance state information about the plugin.
*
* PLUGIN DEVELOPERS:
* Use this struct to hold per-instance information that you'll
* need in the various functions in this file.
******************************************************************************
* First comes the PlatformInstance struct, which contains platform specific
* information for each instance.
*****************************************************************************/
/*------------------------------------------------------------------------------
* Windows PlatformInstance
*----------------------------------------------------------------------------*/
#ifdef XP_PC
typedef struct _PlatformInstance
{
HWND fhWnd;
WNDPROC fDefaultWindowProc;
} PlatformInstance;
#endif /* XP_PC */
/*------------------------------------------------------------------------------
* UNIX PlatformInstance
*----------------------------------------------------------------------------*/
#ifdef XP_UNIX
typedef struct _PlatformInstance
{
Window window;
Display * display;
uint32 x, y;
uint32 width, height;
} PlatformInstance;
#endif /* XP_UNIX */
/*------------------------------------------------------------------------------
* Macintosh PlatformInstance
*----------------------------------------------------------------------------*/
#ifdef XP_MAC
typedef struct _PlatformInstance
{
int placeholder;
} PlatformInstance;
#endif /* macintosh */
/*------------------------------------------------------------------------------
* We'll keep a global execution environment around to make our life simpler
*----------------------------------------------------------------------------*/
JRIEnv* env;
////////////////////////////////////////////////////////////////////////////////
// Simple Plugin Classes
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
// SimplePlugin represents the class of all simple plugins. One
// instance of this class is kept around for as long as there are
// plugin instances outstanding.
class SimplePlugin : public nsIJRILiveConnectPlugin {
public:
////////////////////////////////////////////////////////////////////////////
// from nsIFactory:
NS_IMETHOD CreateInstance(nsISupports *aOuter,
REFNSIID aIID,
void **aResult);
NS_IMETHOD LockFactory(PRBool aLock);
////////////////////////////////////////////////////////////////////////////
// from nsIPlugin:
// This call initializes the plugin and will be called before any new
// instances are created. It is passed browserInterfaces on which QueryInterface
// may be used to obtain an nsIPluginManager, and other interfaces.
NS_IMETHOD_(nsPluginError)
Initialize(nsISupports* browserInterfaces);
// (Corresponds to NPP_Shutdown.)
// Called when the browser is done with the plugin factory, or when
// the plugin is disabled by the user.
NS_IMETHOD_(nsPluginError)
Shutdown(void);
// (Corresponds to NPP_GetMIMEDescription.)
NS_IMETHOD_(const char*)
GetMIMEDescription(void);
// (Corresponds to NPP_GetValue.)
NS_IMETHOD_(nsPluginError)
GetValue(nsPluginVariable variable, void *value);
// (Corresponds to NPP_SetValue.)
NS_IMETHOD_(nsPluginError)
SetValue(nsPluginVariable variable, void *value);
// The old NPP_New call has been factored into two plugin instance methods:
//
// CreateInstance -- called once, after the plugin instance is created. This
// method is used to initialize the new plugin instance (although the actual
// plugin instance object will be created by the plugin manager).
//
// nsIPluginInstance::Start -- called when the plugin instance is to be
// started. This happens in two circumstances: (1) after the plugin instance
// is first initialized, and (2) after a plugin instance is returned to
// (e.g. by going back in the window history) after previously being stopped
// by the Stop method.
////////////////////////////////////////////////////////////////////////////
// from nsIJRILiveConnectPlugin:
// (Corresponds to NPP_GetJavaClass.)
NS_IMETHOD_(jref)
GetJavaClass(void);
////////////////////////////////////////////////////////////////////////////
// SimplePlugin specific methods:
SimplePlugin(void);
virtual ~SimplePlugin(void);
NS_DECL_ISUPPORTS
nsIPluginManager* GetPluginManager(void) { return mgr; }
protected:
nsIPluginManager* mgr;
};
////////////////////////////////////////////////////////////////////////////////
// SimplePluginInstance represents an instance of the SimplePlugin class.
class SimplePluginInstance : public nsIPluginInstance {
public:
////////////////////////////////////////////////////////////////////////////
// from nsIPluginInstance:
NS_IMETHOD_(nsPluginError)
Initialize(nsIPluginInstancePeer* peer);
// Required backpointer to the peer.
NS_IMETHOD_(nsIPluginInstancePeer*)
GetPeer(void);
// See comment for nsIPlugin::CreateInstance, above.
NS_IMETHOD_(nsPluginError)
Start(void);
// The old NPP_Destroy call has been factored into two plugin instance
// methods:
//
// Stop -- called when the plugin instance is to be stopped (e.g. by
// displaying another plugin manager window, causing the page containing
// the plugin to become removed from the display).
//
// Destroy -- called once, before the plugin instance peer is to be
// destroyed. This method is used to destroy the plugin instance.
NS_IMETHOD_(nsPluginError)
Stop(void);
NS_IMETHOD_(nsPluginError)
Destroy(void);
// (Corresponds to NPP_SetWindow.)
NS_IMETHOD_(nsPluginError)
SetWindow(nsPluginWindow* window);
// (Corresponds to NPP_NewStream.)
NS_IMETHOD_(nsPluginError)
NewStream(nsIPluginStreamPeer* peer, nsIPluginStream* *result);
// (Corresponds to NPP_Print.)
NS_IMETHOD_(void)
Print(nsPluginPrint* platformPrint);
// (Corresponds to NPP_HandleEvent.)
// Note that for Unix and Mac the nsPluginEvent structure is different
// from the old NPEvent structure -- it's no longer the native event
// record, but is instead a struct. This was done for future extensibility,
// and so that the Mac could receive the window argument too. For Windows
// and OS2, it's always been a struct, so there's no change for them.
NS_IMETHOD_(PRInt16)
HandleEvent(nsPluginEvent* event);
// (Corresponds to NPP_URLNotify.)
NS_IMETHOD_(void)
URLNotify(const char* url, const char* target,
nsPluginReason reason, void* notifyData);
////////////////////////////////////////////////////////////////////////////
// SimplePluginInstance specific methods:
SimplePluginInstance(void);
virtual ~SimplePluginInstance(void);
NS_DECL_ISUPPORTS
void DisplayJavaMessage(char* msg, int len);
void PlatformNew(void);
nsPluginError PlatformDestroy(void);
nsPluginError PlatformSetWindow(nsPluginWindow* window);
PRInt16 PlatformHandleEvent(nsPluginEvent* event);
void SetMode(PRUint16 mode) { fMode = mode; }
#ifdef XP_PC
static LRESULT CALLBACK
PluginWindowProc( HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);
#endif
#ifdef XP_UNIX
static void Redraw(Widget w, XtPointer closure, XEvent *event);
#endif
protected:
nsIPluginInstancePeer* fPeer;
nsPluginWindow* fWindow;
PRUint16 fMode;
PlatformInstance fPlatform;
};
////////////////////////////////////////////////////////////////////////////////
// SimplePluginStream represents the stream used by SimplePluginInstances
// to receive data from the browser.
class SimplePluginStream : public nsIPluginStream {
public:
////////////////////////////////////////////////////////////////////////////
// from nsIBaseStream:
/** Close the stream. */
NS_IMETHOD
Close(void);
////////////////////////////////////////////////////////////////////////////
// from nsIOutputStream:
/** Write data into the stream.
* @param aBuf the buffer into which the data is read
* @param aOffset the start offset of the data
* @param aCount the maximum number of bytes to read
* @param errorResult the error code if an error occurs
* @return number of bytes read or -1 if error
*/
NS_IMETHOD_(PRInt32)
Write(const char* aBuf, PRInt32 aOffset, PRInt32 aCount,
nsresult *errorResult);
////////////////////////////////////////////////////////////////////////////
// from nsIPluginStream:
// (Corresponds to NPP_NewStream's stype return parameter.)
NS_IMETHOD_(NPStreamType)
GetStreamType(void);
// (Corresponds to NPP_StreamAsFile.)
NS_IMETHOD_(void)
AsFile(const char* fname);
////////////////////////////////////////////////////////////////////////////
// nsSimplePluginStream specific methods:
SimplePluginStream(nsIPluginStreamPeer* peer, SimplePluginInstance* inst);
virtual ~SimplePluginStream(void);
NS_DECL_ISUPPORTS
protected:
nsIPluginStreamPeer* fPeer;
SimplePluginInstance* fInst;
};
// Interface IDs we'll need:
static NS_DEFINE_IID(kIPluginIID, NS_IPLUGIN_IID);
static NS_DEFINE_IID(kIJRILiveConnectPluginIID, NS_IJRILIVECONNECTPLUGIN_IID);
static NS_DEFINE_IID(kIJRILiveConnectPluginInstancePeerIID, NS_IJRILIVECONNECTPLUGININSTANCEPEER_IID);
static NS_DEFINE_IID(kIPluginInstanceIID, NS_IPLUGININSTANCE_IID);
static NS_DEFINE_IID(kIPluginStreamIID, NS_IPLUGINSTREAM_IID);
static NS_DEFINE_IID(kIJRIEnvIID, NS_IJRIENV_IID);
static NS_DEFINE_IID(kIPluginManagerIID, NS_IPLUGINMANAGER_IID);
/*******************************************************************************
* SECTION 3 - API Plugin Implementations
******************************************************************************/
////////////////////////////////////////////////////////////////////////////////
// SimplePlugin Methods
////////////////////////////////////////////////////////////////////////////////
SimplePlugin::SimplePlugin()
: mgr(NULL)
{
NS_INIT_REFCNT();
}
SimplePlugin::~SimplePlugin(void)
{
if (env)
Simple::_unuse(env);
}
// These macros produce simple version of QueryInterface and AddRef.
// See the nsISupports.h header file for details.
NS_METHOD
SimplePlugin::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(kIJRILiveConnectPluginIID)) {
*aInstancePtr = (void*) this;
AddRef();
return NS_OK;
}
static NS_DEFINE_IID(kIPluginIID, NS_IPLUGIN_IID);
if (aIID.Equals(kIPluginIID)) {
*aInstancePtr = (void*) this;
AddRef();
return NS_OK;
}
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
if (aIID.Equals(kISupportsIID)) {
*aInstancePtr = (void*) ((nsISupports*)this);
AddRef();
return NS_OK;
}
return NS_NOINTERFACE;
}
NS_IMPL_ADDREF(SimplePlugin);
NS_IMPL_RELEASE(SimplePlugin);
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* NSGetFactory:
* Provides global initialization for a plug-in, and returns an error value.
*
* This function is called once when a plug-in is loaded, before the first instance
* is created. You should allocate any memory or resources shared by all
* instances of your plug-in at this time. After the last instance has been deleted,
* NPP_Shutdown will be called, where you can release any memory or
* resources allocated by NPP_Initialize.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
extern "C" NS_EXPORT nsresult
NSGetFactory(const nsCID &aClass, nsIFactory **aFactory)
{
if (aClass.Equals(kIPluginIID)) {
SimplePlugin* fact = new SimplePlugin();
if (fact == NULL)
return NS_ERROR_OUT_OF_MEMORY;
fact->AddRef();
*aFactory = fact;
return NS_OK;
}
return NS_ERROR_FAILURE; // XXX right error?
}
NS_METHOD
SimplePlugin::CreateInstance(nsISupports *aOuter, REFNSIID aIID, void **aResult)
{
SimplePluginInstance* inst = new SimplePluginInstance();
if (inst == NULL)
return NS_ERROR_OUT_OF_MEMORY;
inst->AddRef();
return NS_OK;
}
NS_METHOD
SimplePlugin::LockFactory(PRBool aLock)
{
// XXX what to do here?
return NS_OK;
}
NS_METHOD_(nsPluginError)
SimplePlugin::Initialize(nsISupports* browserInterfaces)
{
if (browserInterfaces->QueryInterface(kIPluginManagerIID,
(void**)mgr) != NS_OK) {
return nsPluginError_GenericError;
}
return nsPluginError_NoError;
}
NS_METHOD_(nsPluginError)
SimplePlugin::Shutdown(void)
{
mgr->Release(); // QueryInterface in Initialize
mgr = NULL;
return nsPluginError_NoError;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* GetMIMEDescription:
+++++++++++++++++++++++++++++++++++++++++++++++++*/
NS_METHOD_(const char*)
SimplePlugin::GetMIMEDescription(void)
{
return "application/x-simple-plugin:smp:Simple LiveConnect Sample Plug-in";
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* NPP_GetValue:
+++++++++++++++++++++++++++++++++++++++++++++++++*/
#define PLUGIN_NAME "Simple LiveConnect Sample Plug-in"
#define PLUGIN_DESCRIPTION "Demonstrates a simple LiveConnected plug-in."
NS_METHOD_(nsPluginError)
SimplePlugin::GetValue(nsPluginVariable variable, void *value)
{
nsPluginError err = nsPluginError_NoError;
if (variable == nsPluginVariable_NameString)
*((char **)value) = PLUGIN_NAME;
else if (variable == nsPluginVariable_DescriptionString)
*((char **)value) = PLUGIN_DESCRIPTION;
else
err = nsPluginError_GenericError;
return err;
}
NS_METHOD_(nsPluginError)
SimplePlugin::SetValue(nsPluginVariable variable, void *value)
{
return nsPluginError_NoError;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* GetJavaClass:
*
* GetJavaClass is called during initialization to ask your plugin
* what its associated Java class is. If you don't have one, just return
* NULL. Otherwise, use the javah-generated "use_" function to both
* initialize your class and return it. If you can't find your class, an
* error will be signalled by "use_" and will cause the Navigator to
* complain to the user.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
NS_METHOD_(jref)
SimplePlugin::GetJavaClass(void)
{
struct java_lang_Class* myClass;
if (mgr->QueryInterface(kIJRIEnvIID, (void**)&env) == NS_NOINTERFACE)
return NULL; // Java disabled
myClass = Simple::_use(env);
if (myClass == NULL) {
/*
** If our class doesn't exist (the user hasn't installed it) then
** don't allow any of the Java stuff to happen.
*/
env = NULL;
}
return (jref)myClass;
}
////////////////////////////////////////////////////////////////////////////////
// SimplePluginInstance Methods
////////////////////////////////////////////////////////////////////////////////
SimplePluginInstance::SimplePluginInstance(void)
: fPeer(NULL), fWindow(NULL), fMode(0)
{
NS_INIT_REFCNT();
}
SimplePluginInstance::~SimplePluginInstance(void)
{
PlatformDestroy(); // Perform platform specific cleanup
DisplayJavaMessage("Calling SimplePluginInstance::Release.", -1);
}
// These macros produce simple version of QueryInterface and AddRef.
// See the nsISupports.h header file for details.
NS_IMPL_QUERY_INTERFACE(SimplePluginInstance, kIPluginInstanceIID);
NS_IMPL_ADDREF(SimplePluginInstance);
NS_IMPL_RELEASE(SimplePluginInstance);
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* NewInstance:
* Creates a new instance of a plug-in and returns an error value.
*
* NewInstance creates a new instance of your plug-in with MIME type specified
* by pluginType. The parameter mode is NP_EMBED if the instance was created
* by an EMBED tag, or NP_FULL if the instance was created by a separate file.
* You can allocate any instance-specific private data in instance->pdata at this
* time. The NPP pointer is valid until the instance is destroyed.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
NS_METHOD_(nsPluginError)
SimplePluginInstance::Initialize(nsIPluginInstancePeer* peer)
{
fPeer = peer;
fMode = peer->GetMode();
PlatformNew(); /* Call Platform-specific initializations */
return nsPluginError_NoError;
}
NS_METHOD_(nsIPluginInstancePeer*)
SimplePluginInstance::GetPeer(void)
{
return fPeer;
}
NS_METHOD_(nsPluginError)
SimplePluginInstance::Start(void)
{
/* Show off some of that Java functionality: */
if (env) {
jint v;
char factString[60];
/*
** Call the DisplayJavaMessage utility function to cause Java to
** write to the console and to stdout:
*/
DisplayJavaMessage("Hello world from npsimple!", -1);
/*
** Also test out that fancy factorial method. It's a static
** method, so we'll need to use the class object in order to call
** it:
*/
v = Simple::fact(env, Simple::_class(env), 10);
sprintf(factString, "my favorite function returned %d\n", v);
DisplayJavaMessage(factString, -1);
}
return nsPluginError_NoError;
}
NS_METHOD_(nsPluginError)
SimplePluginInstance::Stop(void)
{
return nsPluginError_NoError;
}
NS_METHOD_(nsPluginError)
SimplePluginInstance::Destroy(void)
{
return nsPluginError_NoError;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* NPP_SetWindow:
* Sets the window in which a plug-in draws, and returns an error value.
*
* NPP_SetWindow informs the plug-in instance specified by instance of the
* the window denoted by window in which the instance draws. This nsPluginWindow
* pointer is valid for the life of the instance, or until NPP_SetWindow is called
* again with a different value. Subsequent calls to NPP_SetWindow for a given
* instance typically indicate that the window has been resized. If either window
* or window->window are NULL, the plug-in must not perform any additional
* graphics operations on the window and should free any resources associated
* with the window.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
NS_METHOD_(nsPluginError)
SimplePluginInstance::SetWindow(nsPluginWindow* window)
{
nsPluginError result;
DisplayJavaMessage("Calling SimplePluginInstance::SetWindow.", -1);
/*
* PLUGIN DEVELOPERS:
* Before setting window to point to the
* new window, you may wish to compare the new window
* info to the previous window (if any) to note window
* size changes, etc.
*/
result = PlatformSetWindow(window);
fWindow = window;
return result;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* NewStream:
* Notifies an instance of a new data stream and returns an error value.
*
* NewStream notifies the instance denoted by instance of the creation of
* a new stream specifed by stream. The NPStream* pointer is valid until the
* stream is destroyed. The MIME type of the stream is provided by the
* parameter type.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
NS_METHOD_(nsPluginError)
SimplePluginInstance::NewStream(nsIPluginStreamPeer* peer, nsIPluginStream* *result)
{
DisplayJavaMessage("Calling SimplePluginInstance::NewStream.", -1);
SimplePluginStream* strm = new SimplePluginStream(peer, this);
if (strm == NULL) return nsPluginError_OutOfMemoryError;
strm->AddRef();
*result = strm;
return nsPluginError_NoError;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* NPP_Print:
+++++++++++++++++++++++++++++++++++++++++++++++++*/
NS_METHOD_(void)
SimplePluginInstance::Print(nsPluginPrint* printInfo)
{
DisplayJavaMessage("Calling SimplePluginInstance::Print.", -1);
if (printInfo == NULL)
return;
if (printInfo->mode == nsPluginType_Full) {
/*
* PLUGIN DEVELOPERS:
* If your plugin would like to take over
* printing completely when it is in full-screen mode,
* set printInfo->pluginPrinted to TRUE and print your
* plugin as you see fit. If your plugin wants Netscape
* to handle printing in this case, set
* printInfo->pluginPrinted to FALSE (the default) and
* do nothing. If you do want to handle printing
* yourself, printOne is true if the print button
* (as opposed to the print menu) was clicked.
* On the Macintosh, platformPrint is a THPrint; on
* Windows, platformPrint is a structure
* (defined in npapi.h) containing the printer name, port,
* etc.
*/
void* platformPrint =
printInfo->print.fullPrint.platformPrint;
PRBool printOne =
printInfo->print.fullPrint.printOne;
/* Do the default*/
printInfo->print.fullPrint.pluginPrinted = PR_FALSE;
}
else { /* If not fullscreen, we must be embedded */
/*
* PLUGIN DEVELOPERS:
* If your plugin is embedded, or is full-screen
* but you returned false in pluginPrinted above, NPP_Print
* will be called with mode == nsPluginType_Embedded. The nsPluginWindow
* in the printInfo gives the location and dimensions of
* the embedded plugin on the printed page. On the
* Macintosh, platformPrint is the printer port; on
* Windows, platformPrint is the handle to the printing
* device context.
*/
nsPluginWindow* printWindow =
&(printInfo->print.embedPrint.window);
void* platformPrint =
printInfo->print.embedPrint.platformPrint;
}
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* NPP_HandleEvent:
* Mac-only, but stub must be present for Windows
* Delivers a platform-specific event to the instance.
*
* On the Macintosh, event is a pointer to a standard Macintosh EventRecord.
* All standard event types are passed to the instance as appropriate. In general,
* return TRUE if you handle the event and FALSE if you ignore the event.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
NS_METHOD_(PRInt16)
SimplePluginInstance::HandleEvent(nsPluginEvent* event)
{
PRInt16 eventHandled = PlatformHandleEvent(event);
return eventHandled;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* URLNotify:
* Notifies the instance of the completion of a URL request.
*
* URLNotify is called when Netscape completes a GetURLNotify or
* PostURLNotify request, to inform the plug-in that the request,
* identified by url, has completed for the reason specified by reason. The most
* common reason code is NPRES_DONE, indicating simply that the request
* completed normally. Other possible reason codes are NPRES_USER_BREAK,
* indicating that the request was halted due to a user action (for example,
* clicking the "Stop" button), and NPRES_NETWORK_ERR, indicating that the
* request could not be completed (for example, because the URL could not be
* found). The complete list of reason codes is found in npapi.h.
*
* The parameter notifyData is the same plug-in-private value passed as an
* argument to the corresponding GetURLNotify or PostURLNotify
* call, and can be used by your plug-in to uniquely identify the request.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
NS_METHOD_(void)
SimplePluginInstance::URLNotify(const char* url, const char* target,
nsPluginReason reason, void* notifyData)
{
// Not used in the Simple plugin
}
////////////////////////////////////////////////////////////////////////////////
// SimplePluginStream Methods
////////////////////////////////////////////////////////////////////////////////
SimplePluginStream::SimplePluginStream(nsIPluginStreamPeer* peer,
SimplePluginInstance* inst)
: fPeer(peer), fInst(inst)
{
NS_INIT_REFCNT();
}
SimplePluginStream::~SimplePluginStream(void)
{
fInst->DisplayJavaMessage("Calling SimplePluginStream::Release.", -1);
}
// These macros produce simple version of QueryInterface and AddRef.
// See the nsISupports.h header file for details.
NS_IMPL_QUERY_INTERFACE(SimplePluginStream, kIPluginStreamIID);
NS_IMPL_ADDREF(SimplePluginStream);
NS_IMPL_RELEASE(SimplePluginStream);
/* PLUGIN DEVELOPERS:
* These next 2 functions are directly relevant in a plug-in which
* handles the data in a streaming manner. If you want zero bytes
* because no buffer space is YET available, return 0. As long as
* the stream has not been written to the plugin, Navigator will
* continue trying to send bytes. If the plugin doesn't want them,
* just return some large number from NPP_WriteReady(), and
* ignore them in NPP_Write(). For a NP_ASFILE stream, they are
* still called but can safely be ignored using this strategy.
*/
PRInt32 STREAMBUFSIZE = 0X0FFFFFFF; /* If we are reading from a file in NPAsFile
* mode so we can take any size stream in our
* write call (since we ignore it) */
NS_METHOD
SimplePluginStream::Close(void)
{
fInst->DisplayJavaMessage("Calling SimplePluginStream::Close.", -1);
return NS_OK;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* NPP_Write:
* Delivers data from a stream and returns the number of bytes written.
*
* NPP_Write is called after a call to NPP_NewStream in which the plug-in
* requested a normal-mode stream, in which the data in the stream is delivered
* progressively over a series of calls to NPP_WriteReady and NPP_Write. The
* function delivers a buffer buf of len bytes of data from the stream identified
* by stream to the instance. The parameter offset is the logical position of
* buf from the beginning of the data in the stream.
*
* The function returns the number of bytes written (consumed by the instance).
* A negative return value causes an error on the stream, which will
* subsequently be destroyed via a call to NPP_DestroyStream.
*
* Note that a plug-in must consume at least as many bytes as it indicated in the
* preceeding NPP_WriteReady call. All data consumed must be either processed
* immediately or copied to memory allocated by the plug-in: the buf parameter
* is not persistent.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
NS_METHOD_(PRInt32)
SimplePluginStream::Write(const char* buffer, PRInt32 len, PRInt32 aCount,
nsresult *errorResult)
{
fInst->DisplayJavaMessage((char*)buffer, len);
*errorResult = NS_OK;
return len; /* The number of bytes accepted */
}
/*******************************************************************************/
NS_METHOD_(NPStreamType)
SimplePluginStream::GetStreamType(void)
{
// XXX these should become subclasses
return NPStreamType_Normal;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* AsFile:
* Provides a local file name for the data from a stream.
*
* AsFile provides the instance with a full path to a local file,
* identified by fname, for the stream specified by stream. NPP_StreamAsFile is
* called as a result of the plug-in requesting mode NP_ASFILEONLY or
* NP_ASFILE in a previous call to NPP_NewStream. If an error occurs while
* retrieving the data or writing the file, fname may be NULL.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
NS_METHOD_(void )
SimplePluginStream::AsFile(const char* fname)
{
fInst->DisplayJavaMessage("Calling SimplePluginStream::AsFile.", -1);
}
/*******************************************************************************
* SECTION 4 - Java Native Method Implementations
******************************************************************************/
JRI_PUBLIC_API(void)
native_Simple_printToStdout(JRIEnv* env, struct Simple* self,
struct java_lang_String *s)
{
const char* chars = JRI_GetStringUTFChars(env, s);
if (chars == NULL) return;
printf(chars); /* cross-platform UI! */
}
/*******************************************************************************
* SECTION 5 - Utility Method Implementations
******************************************************************************/
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* DisplayJavaMessage
*
* This function is a utility routine that calls back into Java to print
* messages to the Java Console and to stdout (via the native method,
* native_Simple_printToStdout, defined below). Sure, it's not a very
* interesting use of Java, but it gets the point across.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
void
SimplePluginInstance::DisplayJavaMessage(char* msg, int len)
{
Simple* javaPeer; // instance of the java class (there's no package qualifier)
java_lang_String* str;
if (!env) { /* Java failed to initialize, so do nothing. */
return;
}
nsILiveConnectPluginInstancePeer* lcPeer;
if (fPeer->QueryInterface(kIJRILiveConnectPluginInstancePeerIID,
(void**)&lcPeer) == NS_NOINTERFACE) {
return; // Browser doesn't support LiveConnect
}
if (len == -1) {
len = strlen(msg);
}
/*
** Use the JRI (see jri.h) to create a Java string from the input
** message:
*/
str = JRI_NewStringUTF(env, msg, len);
/*
** Use the GetJavaPeer operation to get the Java instance that
** corresponds to our plug-in (an instance of the Simple class):
*/
javaPeer = (Simple*)lcPeer->GetJavaPeer();
/*
** Finally, call our plug-in's big "feature" -- the 'doit' method,
** passing the execution environment, the object, and the java
** string:
*/
javaPeer->doit(env, str);
}
/*------------------------------------------------------------------------------
* Platform-Specific Implemenations
*------------------------------------------------------------------------------
* UNIX Implementations
*----------------------------------------------------------------------------*/
#ifdef XP_UNIX
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PlatformNew
*
* Initialize any Platform-Specific instance data.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
void
SimplePluginInstance::PlatformNew(void)
{
fPlatform.window = 0;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PlatformDestroy
*
* Destroy any Platform-Specific instance data.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
nsPluginError
SimplePluginInstance::PlatformDestroy(void)
{
return nsPluginError_NoError;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PlatformSetWindow
*
* Perform platform-specific window operations
+++++++++++++++++++++++++++++++++++++++++++++++++*/
nsPluginError
SimplePluginInstance::PlatformSetWindow(nsPluginWindow* window)
{
Widget netscape_widget;
fPlatform.window = (Window) window->window;
fPlatform.x = window->x;
fPlatform.y = window->y;
fPlatform.width = window->width;
fPlatform.height = window->height;
fPlatform.display = ((nsPluginSetWindowCallbackStruct *)window->ws_info)->display;
netscape_widget = XtWindowToWidget(fPlatform.display, fPlatform.window);
XtAddEventHandler(netscape_widget, ExposureMask, FALSE, (XtEventHandler)Redraw, this);
Redraw(netscape_widget, (XtPointer)this, NULL);
return nsPluginError_NoError;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PlatformHandleEvent
*
* Handle platform-specific events.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
int16
SimplePluginInstance::PlatformHandleEvent(nsPluginEvent* event)
{
/* UNIX Plugins do not use HandleEvent */
return 0;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* Redraw
+++++++++++++++++++++++++++++++++++++++++++++++++*/
void
SimplePluginInstance::Redraw(Widget w, XtPointer closure, XEvent *event)
{
GC gc;
XGCValues gcv;
const char* text = "Hello World";
SimplePluginInstance* inst = (SimplePluginInstance*)closure;
XtVaGetValues(w, XtNbackground, &gcv.background,
XtNforeground, &gcv.foreground, 0);
gc = XCreateGC(inst->fPlatform.display, inst->fPlatform.window,
GCForeground|GCBackground, &gcv);
XDrawRectangle(inst->fPlatform.display, inst->fPlatform.window, gc,
0, 0, inst->fPlatform.width-1, inst->fPlatform.height-1);
XDrawString(inst->fPlatform.display, inst->fPlatform.window, gc,
inst->fPlatform.width/2 - 100, inst->fPlatform.height/2,
text, strlen(text));
}
#endif /* XP_UNIX */
/*------------------------------------------------------------------------------
* Windows Implementations
*----------------------------------------------------------------------------*/
#ifdef XP_PC
const char* gInstanceLookupString = "instance->pdata";
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PlatformNew
*
* Initialize any Platform-Specific instance data.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
void
SimplePluginInstance::PlatformNew(void)
{
fPlatform.fhWnd = NULL;
fPlatform.fDefaultWindowProc = NULL;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PlatformDestroy
*
* Destroy any Platform-Specific instance data.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
nsPluginError
SimplePluginInstance::PlatformDestroy(void)
{
if( fWindow != NULL ) { /* If we have a window, clean
* it up. */
SetWindowLong( fPlatform.fhWnd, GWL_WNDPROC, (LONG)fPlatform.fDefaultWindowProc);
fPlatform.fDefaultWindowProc = NULL;
fPlatform.fhWnd = NULL;
}
return nsPluginError_NoError;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PlatformSetWindow
*
* Perform platform-specific window operations
+++++++++++++++++++++++++++++++++++++++++++++++++*/
nsPluginError
SimplePluginInstance::PlatformSetWindow(nsPluginWindow* window)
{
if( fWindow != NULL ) /* If we already have a window, clean
* it up before trying to subclass
* the new window. */
{
if( (window == NULL) || ( window->window == NULL ) ) {
/* There is now no window to use. get rid of the old
* one and exit. */
SetWindowLong( fPlatform.fhWnd, GWL_WNDPROC, (LONG)fPlatform.fDefaultWindowProc);
fPlatform.fDefaultWindowProc = NULL;
fPlatform.fhWnd = NULL;
return nsPluginError_NoError;
}
else if ( fPlatform.fhWnd == (HWND) window->window ) {
/* The new window is the same as the old one. Exit now. */
return nsPluginError_NoError;
}
else {
/* Clean up the old window, so that we can subclass the new
* one later. */
SetWindowLong( fPlatform.fhWnd, GWL_WNDPROC, (LONG)fPlatform.fDefaultWindowProc);
fPlatform.fDefaultWindowProc = NULL;
fPlatform.fhWnd = NULL;
}
}
else if( (window == NULL) || ( window->window == NULL ) ) {
/* We can just get out of here if there is no current
* window and there is no new window to use. */
return nsPluginError_NoError;
}
/* At this point, we will subclass
* window->window so that we can begin drawing and
* receiving window messages. */
fPlatform.fDefaultWindowProc =
(WNDPROC)SetWindowLong( (HWND)window->window,
GWL_WNDPROC, (LONG)SimplePluginInstance::PluginWindowProc);
fPlatform.fhWnd = (HWND) window->window;
SetProp(fPlatform.fhWnd, gInstanceLookupString, (HANDLE)this);
InvalidateRect( fPlatform.fhWnd, NULL, TRUE );
UpdateWindow( fPlatform.fhWnd );
return nsPluginError_NoError;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PlatformHandleEvent
*
* Handle platform-specific events.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
PRInt16
SimplePluginInstance::PlatformHandleEvent(nsPluginEvent* event)
{
/* Windows Plugins use the Windows event call-back mechanism
for events. (See PluginWindowProc) */
return 0;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PluginWindowProc
*
* Handle the Windows window-event loop.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
LRESULT CALLBACK
SimplePluginInstance::PluginWindowProc( HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
SimplePluginInstance* inst = (SimplePluginInstance*) GetProp(hWnd, gInstanceLookupString);
switch( Msg ) {
case WM_PAINT: {
PAINTSTRUCT paintStruct;
HDC hdc;
hdc = BeginPaint( hWnd, &paintStruct );
TextOut(hdc, 0, 0, "Hello, World!", 15);
EndPaint( hWnd, &paintStruct );
break;
}
default: {
inst->fPlatform.fDefaultWindowProc(hWnd, Msg, wParam, lParam);
}
}
return 0;
}
#endif /* XP_PC */
/*------------------------------------------------------------------------------
* Macintosh Implementations
*----------------------------------------------------------------------------*/
#ifdef macintosh
PRBool StartDraw(nsPluginWindow* window);
void EndDraw(nsPluginWindow* window);
void DoDraw(SimplePluginInstance* This);
CGrafPort gSavePort;
CGrafPtr gOldPort;
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PlatformNew
*
* Initialize any Platform-Specific instance data.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
void
SimplePluginInstance::PlatformNew(void)
{
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PlatformDestroy
*
* Destroy any Platform-Specific instance data.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
nsPluginError
SimplePluginInstance::PlatformDestroy(void)
{
return nsPluginError_NoError;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PlatformSetWindow
*
* Perform platform-specific window operations
+++++++++++++++++++++++++++++++++++++++++++++++++*/
nsPluginError
SimplePluginInstance::PlatformSetWindow(nsPluginWindow* window)
{
fWindow = window;
if( StartDraw( window ) ) {
DoDraw(This);
EndDraw( window );
}
return nsPluginError_NoError;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* PlatformHandleEvent
*
* Handle platform-specific events.
+++++++++++++++++++++++++++++++++++++++++++++++++*/
int16
SimplePluginInstance::PlatformHandleEvent(nsPluginEvent* event)
{
int16 eventHandled = FALSE;
EventRecord* ev = (EventRecord*) event;
if (This != NULL && event != NULL)
{
switch (ev->what)
{
/*
* Draw ourselves on update events
*/
case updateEvt:
if( StartDraw( fWindow ) ) {
DoDraw(This);
EndDraw( fWindow );
}
eventHandled = true;
break;
default:
break;
}
}
return eventHandled;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* StartDraw
+++++++++++++++++++++++++++++++++++++++++++++++++*/
PRBool
SimplePluginInstance::StartDraw(nsPluginWindow* window)
{
NP_Port* port;
Rect clipRect;
RGBColor col;
if (window == NULL)
return FALSE;
port = (NP_Port*) window->window;
if (window->clipRect.left < window->clipRect.right)
{
/* Preserve the old port */
GetPort((GrafPtr*)&gOldPort);
SetPort((GrafPtr)port->port);
/* Preserve the old drawing environment */
gSavePort.portRect = port->port->portRect;
gSavePort.txFont = port->port->txFont;
gSavePort.txFace = port->port->txFace;
gSavePort.txMode = port->port->txMode;
gSavePort.rgbFgColor = port->port->rgbFgColor;
gSavePort.rgbBkColor = port->port->rgbBkColor;
GetClip(gSavePort.clipRgn);
/* Setup our drawing environment */
clipRect.top = window->clipRect.top + port->porty;
clipRect.left = window->clipRect.left + port->portx;
clipRect.bottom = window->clipRect.bottom + port->porty;
clipRect.right = window->clipRect.right + port->portx;
SetOrigin(port->portx,port->porty);
ClipRect(&clipRect);
clipRect.top = clipRect.left = 0;
TextSize(12);
TextFont(geneva);
TextMode(srcCopy);
col.red = col.green = col.blue = 0;
RGBForeColor(&col);
col.red = col.green = col.blue = 65000;
RGBBackColor(&col);
return TRUE;
}
else
return FALSE;
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* EndDraw
+++++++++++++++++++++++++++++++++++++++++++++++++*/
void
SimplePluginInstance::EndDraw(nsPluginWindow* window)
{
CGrafPtr myPort;
NP_Port* port = (NP_Port*) window->window;
SetOrigin(gSavePort.portRect.left, gSavePort.portRect.top);
SetClip(gSavePort.clipRgn);
GetPort((GrafPtr*)&myPort);
myPort->txFont = gSavePort.txFont;
myPort->txFace = gSavePort.txFace;
myPort->txMode = gSavePort.txMode;
RGBForeColor(&gSavePort.rgbFgColor);
RGBBackColor(&gSavePort.rgbBkColor);
SetPort((GrafPtr)gOldPort);
}
/*+++++++++++++++++++++++++++++++++++++++++++++++++
* DoDraw
+++++++++++++++++++++++++++++++++++++++++++++++++*/
void
SimplePluginInstance::DoDraw(void)
{
Rect drawRect;
drawRect.top = 0;
drawRect.left = 0;
drawRect.bottom = drawRect.top + fWindow->height;
drawRect.right = drawRect.left + fWindow->width;
EraseRect( &drawRect );
MoveTo( 2, 12 );
DrawString("\pHello, World!");
}
#endif /* macintosh */
/******************************************************************************/
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