|
|
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
|
/*
|
|
|
* Copyright <20> 2004, Apple Computer, Inc. and The Mozilla Foundation.
|
|
|
* All rights reserved.
|
|
|
*
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
* modification, are permitted provided that the following conditions are
|
|
|
* met:
|
|
|
*
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
|
* documentation and/or other materials provided with the distribution.
|
|
|
* 3. Neither the names of Apple Computer, Inc. ("Apple") or The Mozilla
|
|
|
* Foundation ("Mozilla") nor the names of their contributors may be used
|
|
|
* to endorse or promote products derived from this software without
|
|
|
* specific prior written permission.
|
|
|
*
|
|
|
* THIS SOFTWARE IS PROVIDED BY APPLE, MOZILLA AND THEIR CONTRIBUTORS "AS
|
|
|
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
|
|
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE, MOZILLA OR
|
|
|
* THEIR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
|
|
|
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
*
|
|
|
* Revision 1 (March 4, 2004):
|
|
|
* Initial proposal.
|
|
|
*
|
|
|
* Revision 2 (March 10, 2004):
|
|
|
* All calls into script were made asynchronous. Results are
|
|
|
* provided via the NPScriptResultFunctionPtr callback.
|
|
|
*
|
|
|
* Revision 3 (March 10, 2004):
|
|
|
* Corrected comments to not refer to class retain/release FunctionPtrs.
|
|
|
*
|
|
|
* Revision 4 (March 11, 2004):
|
|
|
* Added additional convenience NPN_SetExceptionWithUTF8().
|
|
|
* Changed NPHasPropertyFunctionPtr and NPHasMethodFunctionPtr to take NPClass
|
|
|
* pointers instead of NPObject pointers.
|
|
|
* Added NPIsValidIdentifier().
|
|
|
*
|
|
|
* Revision 5 (March 17, 2004):
|
|
|
* Added context parameter to result callbacks from ScriptObject functions.
|
|
|
*
|
|
|
* Revision 6 (March 29, 2004):
|
|
|
* Renamed functions implemented by user agent to NPN_*. Removed _ from
|
|
|
* type names.
|
|
|
* Renamed "JavaScript" types to "Script".
|
|
|
*
|
|
|
* Revision 7 (April 21, 2004):
|
|
|
* NPIdentifier becomes a void*, was int32_t
|
|
|
* Remove NP_IsValidIdentifier, renamed NP_IdentifierFromUTF8 to NP_GetIdentifier
|
|
|
* Added NPVariant and modified functions to use this new type.
|
|
|
*
|
|
|
* Revision 8 (July 9, 2004):
|
|
|
* Updated to joint Apple-Mozilla license.
|
|
|
*
|
|
|
*/
|
|
|
#ifndef _NP_RUNTIME_H_
|
|
|
#define _NP_RUNTIME_H_
|
|
|
|
|
|
#include <qglobal.h>
|
|
|
typedef Q_UINT32 uint32_t;
|
|
|
|
|
|
#ifdef __cplusplus
|
|
|
extern "C" {
|
|
|
#endif
|
|
|
|
|
|
|
|
|
/*
|
|
|
This API is used to facilitate binding code written in C to script
|
|
|
objects. The API in this header does not assume the presence of a
|
|
|
user agent. That is, it can be used to bind C code to scripting
|
|
|
environments outside of the context of a user agent.
|
|
|
|
|
|
However, the normal use of the this API is in the context of a
|
|
|
scripting environment running in a browser or other user agent.
|
|
|
In particular it is used to support the extended Netscape
|
|
|
script-ability API for plugins (NP-SAP). NP-SAP is an extension
|
|
|
of the Netscape plugin API. As such we have adopted the use of
|
|
|
the "NP" prefix for this API.
|
|
|
|
|
|
The following NP{N|P}Variables were added to the Netscape plugin
|
|
|
API (in npapi.h):
|
|
|
|
|
|
NPNVWindowNPObject
|
|
|
NPNVPluginElementNPObject
|
|
|
NPPVpluginScriptableNPObject
|
|
|
|
|
|
These variables are exposed through NPN_GetValue() and
|
|
|
NPP_GetValue() (respectively) and are used to establish the
|
|
|
initial binding between the user agent and native code. The DOM
|
|
|
objects in the user agent can be examined and manipulated using
|
|
|
the NPN_ functions that operate on NPObjects described in this
|
|
|
header.
|
|
|
|
|
|
To the extent possible the assumptions about the scripting
|
|
|
language used by the scripting environment have been minimized.
|
|
|
*/
|
|
|
|
|
|
#define NP_BEGIN_MACRO do {
|
|
|
#define NP_END_MACRO } while (0)
|
|
|
|
|
|
/*
|
|
|
Objects (non-primitive data) passed between 'C' and script is
|
|
|
always wrapped in an NPObject. The 'interface' of an NPObject is
|
|
|
described by an NPClass.
|
|
|
*/
|
|
|
typedef struct NPObject NPObject;
|
|
|
typedef struct NPClass NPClass;
|
|
|
|
|
|
typedef char NPUTF8;
|
|
|
typedef struct _NPString {
|
|
|
const NPUTF8 *utf8characters;
|
|
|
uint32_t utf8length;
|
|
|
} NPString;
|
|
|
|
|
|
typedef enum {
|
|
|
NPVariantType_Void,
|
|
|
NPVariantType_Null,
|
|
|
NPVariantType_Bool,
|
|
|
NPVariantType_Int32,
|
|
|
NPVariantType_Double,
|
|
|
NPVariantType_String,
|
|
|
NPVariantType_Object
|
|
|
} NPVariantType;
|
|
|
|
|
|
typedef struct _NPVariant {
|
|
|
NPVariantType type;
|
|
|
union {
|
|
|
bool boolValue;
|
|
|
uint32_t intValue;
|
|
|
double doubleValue;
|
|
|
NPString stringValue;
|
|
|
NPObject *objectValue;
|
|
|
} value;
|
|
|
} NPVariant;
|
|
|
|
|
|
/*
|
|
|
NPN_ReleaseVariantValue is called on all 'out' parameters
|
|
|
references. Specifically it is to be called on variants that own
|
|
|
their value, as is the case with all non-const NPVariant*
|
|
|
arguments after a successful call to any methods (except this one)
|
|
|
in this API.
|
|
|
|
|
|
After calling NPN_ReleaseVariantValue, the type of the variant
|
|
|
will be NPVariantType_Void.
|
|
|
*/
|
|
|
void NPN_ReleaseVariantValue(NPVariant *variant);
|
|
|
|
|
|
#define NPVARIANT_IS_VOID(_v) ((_v).type == NPVariantType_Void)
|
|
|
#define NPVARIANT_IS_NULL(_v) ((_v).type == NPVariantType_Null)
|
|
|
#define NPVARIANT_IS_BOOLEAN(_v) ((_v).type == NPVariantType_Bool)
|
|
|
#define NPVARIANT_IS_INT32(_v) ((_v).type == NPVariantType_Int32)
|
|
|
#define NPVARIANT_IS_DOUBLE(_v) ((_v).type == NPVariantType_Double)
|
|
|
#define NPVARIANT_IS_STRING(_v) ((_v).type == NPVariantType_String)
|
|
|
#define NPVARIANT_IS_OBJECT(_v) ((_v).type == NPVariantType_Object)
|
|
|
|
|
|
#define NPVARIANT_TO_BOOLEAN(_v) ((_v).value.boolValue)
|
|
|
#define NPVARIANT_TO_INT32(_v) ((_v).value.intValue)
|
|
|
#define NPVARIANT_TO_DOUBLE(_v) ((_v).value.doubleValue)
|
|
|
#define NPVARIANT_TO_STRING(_v) ((_v).value.stringValue)
|
|
|
#define NPVARIANT_TO_OBJECT(_v) ((_v).value.objectValue)
|
|
|
|
|
|
#define VOID_TO_NPVARIANT(_v) \
|
|
|
NP_BEGIN_MACRO \
|
|
|
(_v).type = NPVariantType_Void; \
|
|
|
(_v).value.objectValue = NULL; \
|
|
|
NP_END_MACRO
|
|
|
|
|
|
#define NULL_TO_NPVARIANT(_v) \
|
|
|
NP_BEGIN_MACRO \
|
|
|
(_v).type = NPVariantType_Null; \
|
|
|
(_v).value.objectValue = NULL; \
|
|
|
NP_END_MACRO
|
|
|
|
|
|
#define BOOLEAN_TO_NPVARIANT(_val, _v) \
|
|
|
NP_BEGIN_MACRO \
|
|
|
(_v).type = NPVariantType_Bool; \
|
|
|
(_v).value.boolValue = !!(_val); \
|
|
|
NP_END_MACRO
|
|
|
|
|
|
#define INT32_TO_NPVARIANT(_val, _v) \
|
|
|
NP_BEGIN_MACRO \
|
|
|
(_v).type = NPVariantType_Int32; \
|
|
|
(_v).value.intValue = _val; \
|
|
|
NP_END_MACRO
|
|
|
|
|
|
#define DOUBLE_TO_NPVARIANT(_val, _v) \
|
|
|
NP_BEGIN_MACRO \
|
|
|
(_v).type = NPVariantType_Double; \
|
|
|
(_v).value.doubleValue = _val; \
|
|
|
NP_END_MACRO
|
|
|
|
|
|
#define STRINGZ_TO_NPVARIANT(_val, _v) \
|
|
|
NP_BEGIN_MACRO \
|
|
|
(_v).type = NPVariantType_String; \
|
|
|
NPString str = { _val, strlen(_val) }; \
|
|
|
(_v).value.stringValue = str; \
|
|
|
NP_END_MACRO
|
|
|
|
|
|
#define STRINGN_TO_NPVARIANT(_val, _len, _v) \
|
|
|
NP_BEGIN_MACRO \
|
|
|
(_v).type = NPVariantType_String; \
|
|
|
NPString str = { _val, _len }; \
|
|
|
(_v).value.stringValue = str; \
|
|
|
NP_END_MACRO
|
|
|
|
|
|
#define OBJECT_TO_NPVARIANT(_val, _v) \
|
|
|
NP_BEGIN_MACRO \
|
|
|
(_v).type = NPVariantType_Object; \
|
|
|
(_v).value.objectValue = _val; \
|
|
|
NP_END_MACRO
|
|
|
|
|
|
|
|
|
/*
|
|
|
Type mappings (JavaScript types have been used for illustration
|
|
|
purposes):
|
|
|
|
|
|
JavaScript to C (NPVariant with type:)
|
|
|
undefined NPVariantType_Void
|
|
|
null NPVariantType_Null
|
|
|
Boolean NPVariantType_Bool
|
|
|
Number NPVariantType_Double or NPVariantType_Int32
|
|
|
String NPVariantType_String
|
|
|
Object NPVariantType_Object
|
|
|
|
|
|
C (NPVariant with type:) to JavaScript
|
|
|
NPVariantType_Void undefined
|
|
|
NPVariantType_Null null
|
|
|
NPVariantType_Bool Boolean
|
|
|
NPVariantType_Int32 Number
|
|
|
NPVariantType_Double Number
|
|
|
NPVariantType_String String
|
|
|
NPVariantType_Object Object
|
|
|
*/
|
|
|
|
|
|
typedef void *NPIdentifier;
|
|
|
|
|
|
/*
|
|
|
NPObjects have methods and properties. Methods and properties are
|
|
|
identified with NPIdentifiers. These identifiers may be reflected
|
|
|
in script. NPIdentifiers can be either strings or integers, IOW,
|
|
|
methods and properties can be identified by either strings or
|
|
|
integers (i.e. foo["bar"] vs foo[1]). NPIdentifiers can be
|
|
|
compared using ==. In case of any errors, the requested
|
|
|
NPIdentifier(s) will be NULL.
|
|
|
*/
|
|
|
NPIdentifier NPN_GetStringIdentifier(const NPUTF8 *name);
|
|
|
void NPN_GetStringIdentifiers(const NPUTF8 **names, int32_t nameCount,
|
|
|
NPIdentifier *identifiers);
|
|
|
NPIdentifier NPN_GetIntIdentifier(int32_t intid);
|
|
|
bool NPN_IdentifierIsString(NPIdentifier identifier);
|
|
|
|
|
|
/*
|
|
|
The NPUTF8 returned from NPN_UTF8FromIdentifier SHOULD be freed.
|
|
|
*/
|
|
|
NPUTF8 *NPN_UTF8FromIdentifier(NPIdentifier identifier);
|
|
|
|
|
|
/*
|
|
|
Get the integer represented by identifier. If identifier is not an
|
|
|
integer identifier, the behaviour is undefined.
|
|
|
*/
|
|
|
int32_t NPN_IntFromIdentifier(NPIdentifier identifier);
|
|
|
|
|
|
/*
|
|
|
NPObject behavior is implemented using the following set of
|
|
|
callback functions.
|
|
|
|
|
|
The NPVariant *result argument of these functions (where
|
|
|
applicable) should be released using NPN_ReleaseVariantValue().
|
|
|
*/
|
|
|
typedef NPObject *(*NPAllocateFunctionPtr)(NPP npp, NPClass *aClass);
|
|
|
typedef void (*NPDeallocateFunctionPtr)(NPObject *npobj);
|
|
|
typedef void (*NPInvalidateFunctionPtr)(NPObject *npobj);
|
|
|
typedef bool (*NPHasMethodFunctionPtr)(NPObject *npobj, NPIdentifier name);
|
|
|
typedef bool (*NPInvokeFunctionPtr)(NPObject *npobj, NPIdentifier name,
|
|
|
const NPVariant *args, uint32_t argCount,
|
|
|
NPVariant *result);
|
|
|
typedef bool (*NPInvokeDefaultFunctionPtr)(NPObject *npobj,
|
|
|
const NPVariant *args,
|
|
|
uint32_t argCount,
|
|
|
NPVariant *result);
|
|
|
typedef bool (*NPHasPropertyFunctionPtr)(NPObject *npobj, NPIdentifier name);
|
|
|
typedef bool (*NPGetPropertyFunctionPtr)(NPObject *npobj, NPIdentifier name,
|
|
|
NPVariant *result);
|
|
|
typedef bool (*NPSetPropertyFunctionPtr)(NPObject *npobj, NPIdentifier name,
|
|
|
const NPVariant *value);
|
|
|
typedef bool (*NPRemovePropertyFunctionPtr)(NPObject *npobj,
|
|
|
NPIdentifier name);
|
|
|
|
|
|
/*
|
|
|
NPObjects returned by create, retain, invoke, and getProperty pass
|
|
|
a reference count to the caller. That is, the callee adds a
|
|
|
reference count which passes to the caller. It is the caller's
|
|
|
responsibility to release the returned object.
|
|
|
|
|
|
NPInvokeFunctionPtr function may return 0 to indicate a void
|
|
|
result.
|
|
|
|
|
|
NPInvalidateFunctionPtr is called by the scripting environment
|
|
|
when the native code is shutdown. Any attempt to message a
|
|
|
NPObject instance after the invalidate callback has been
|
|
|
called will result in undefined behavior, even if the native code
|
|
|
is still retaining those NPObject instances. (The runtime
|
|
|
will typically return immediately, with 0 or NULL, from an attempt
|
|
|
to dispatch to a NPObject, but this behavior should not be
|
|
|
depended upon.)
|
|
|
*/
|
|
|
struct NPClass
|
|
|
{
|
|
|
uint32_t structVersion;
|
|
|
NPAllocateFunctionPtr allocate;
|
|
|
NPDeallocateFunctionPtr deallocate;
|
|
|
NPInvalidateFunctionPtr invalidate;
|
|
|
NPHasMethodFunctionPtr hasMethod;
|
|
|
NPInvokeFunctionPtr invoke;
|
|
|
NPInvokeDefaultFunctionPtr invokeDefault;
|
|
|
NPHasPropertyFunctionPtr hasProperty;
|
|
|
NPGetPropertyFunctionPtr getProperty;
|
|
|
NPSetPropertyFunctionPtr setProperty;
|
|
|
NPRemovePropertyFunctionPtr removeProperty;
|
|
|
};
|
|
|
|
|
|
#define NP_CLASS_STRUCT_VERSION 1
|
|
|
|
|
|
struct NPObject {
|
|
|
NPClass *_class;
|
|
|
uint32_t referenceCount;
|
|
|
/*
|
|
|
* Additional space may be allocated here by types of NPObjects
|
|
|
*/
|
|
|
};
|
|
|
|
|
|
/*
|
|
|
If the class has an allocate function, NPN_CreateObject invokes
|
|
|
that function, otherwise a NPObject is allocated and
|
|
|
returned. This method will initialize the referenceCount member of
|
|
|
the NPObject to 1.
|
|
|
*/
|
|
|
NPObject *NPN_CreateObject(NPP npp, NPClass *aClass);
|
|
|
|
|
|
/*
|
|
|
Increment the NPObject's reference count.
|
|
|
*/
|
|
|
NPObject *NPN_RetainObject(NPObject *npobj);
|
|
|
|
|
|
/*
|
|
|
Decremented the NPObject's reference count. If the reference
|
|
|
count goes to zero, the class's destroy function is invoke if
|
|
|
specified, otherwise the object is freed directly.
|
|
|
*/
|
|
|
void NPN_ReleaseObject(NPObject *npobj);
|
|
|
|
|
|
/*
|
|
|
Functions to access script objects represented by NPObject.
|
|
|
|
|
|
Calls to script objects are synchronous. If a function returns a
|
|
|
value, it will be supplied via the result NPVariant
|
|
|
argument. Successful calls will return true, false will be
|
|
|
returned in case of an error.
|
|
|
|
|
|
Calls made from plugin code to script must be made from the thread
|
|
|
on which the plugin was initialized.
|
|
|
*/
|
|
|
|
|
|
bool NPN_Invoke(NPP npp, NPObject *npobj, NPIdentifier methodName,
|
|
|
const NPVariant *args, uint32_t argCount, NPVariant *result);
|
|
|
bool NPN_InvokeDefault(NPP npp, NPObject *npobj, const NPVariant *args,
|
|
|
uint32_t argCount, NPVariant *result);
|
|
|
bool NPN_Evaluate(NPP npp, NPObject *npobj, NPString *script,
|
|
|
NPVariant *result);
|
|
|
bool NPN_GetProperty(NPP npp, NPObject *npobj, NPIdentifier propertyName,
|
|
|
NPVariant *result);
|
|
|
bool NPN_SetProperty(NPP npp, NPObject *npobj, NPIdentifier propertyName,
|
|
|
const NPVariant *value);
|
|
|
bool NPN_RemoveProperty(NPP npp, NPObject *npobj, NPIdentifier propertyName);
|
|
|
bool NPN_HasProperty(NPP npp, NPObject *npobj, NPIdentifier propertyName);
|
|
|
bool NPN_HasMethod(NPP npp, NPObject *npobj, NPIdentifier methodName);
|
|
|
|
|
|
/*
|
|
|
NPN_SetException may be called to trigger a script exception upon
|
|
|
return from entry points into NPObjects. Typical usage:
|
|
|
|
|
|
NPN_SetException (npobj, message);
|
|
|
*/
|
|
|
void NPN_SetException(NPObject *npobj, const NPUTF8 *message);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
|
}
|
|
|
#endif
|
|
|
|
|
|
#endif
|
