/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
/* this file is part of evince, a gnome document viewer
 *
 *  Copyright (C) 2009 litl, LLC
 *
 * Evince is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Evince is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef __SCRIPTABLE_PLUGIN_H__
#define __SCRIPTABLE_PLUGIN_H__

#include <npapi.h>
#include <npfunctions.h>

NPObject *AllocateScriptablePluginObject (NPP npp, NPClass *aClass);
NPObject *AllocateConstructablePluginObject (NPP npp, NPClass *aClass);

class ScriptablePluginObjectBase : public NPObject
{
	public:
		ScriptablePluginObjectBase (NPP npp) : mNpp(npp)
		{
		}

		virtual ~ScriptablePluginObjectBase ()
		{
		}

		virtual void Invalidate ();
		virtual bool HasMethod (NPIdentifier name);
		virtual bool Invoke (NPIdentifier name, const NPVariant *args,
				     uint32_t argCount, NPVariant *result);
		virtual bool InvokeDefault (const NPVariant *args, uint32_t argCount,
					    NPVariant *result);
		virtual bool HasProperty (NPIdentifier name);
		virtual bool GetProperty (NPIdentifier name, NPVariant *result);
		virtual bool SetProperty (NPIdentifier name, const NPVariant *value);
		virtual bool RemoveProperty (NPIdentifier name);
		virtual bool Enumerate (NPIdentifier **identifier, uint32_t *count);
		virtual bool Construct (const NPVariant *args, uint32_t argCount,
					NPVariant *result);

		static void _Deallocate (NPObject *npobj);
		static void _Invalidate (NPObject *npobj);
		static bool _HasMethod (NPObject *npobj, NPIdentifier name);
		static bool _Invoke (NPObject *npobj, NPIdentifier name,
				     const NPVariant *args, uint32_t argCount,
				     NPVariant *result);
		static bool _InvokeDefault (NPObject *npobj, const NPVariant *args,
					    uint32_t argCount, NPVariant *result);
		static bool _HasProperty (NPObject * npobj, NPIdentifier name);
		static bool _GetProperty (NPObject *npobj, NPIdentifier name,
					  NPVariant *result);
		static bool _SetProperty (NPObject *npobj, NPIdentifier name,
					  const NPVariant *value);
		static bool _RemoveProperty (NPObject *npobj, NPIdentifier name);
		static bool _Enumerate (NPObject *npobj, NPIdentifier **identifier,
					uint32_t *count);
		static bool _Construct (NPObject *npobj, const NPVariant *args,
					uint32_t argCount, NPVariant *result);

	protected:
		NPP mNpp;
};

class ScriptablePluginObject : public ScriptablePluginObjectBase
{
	public:
		ScriptablePluginObject (NPP npp);

		virtual bool HasMethod (NPIdentifier name);
		virtual bool HasProperty (NPIdentifier name);
		virtual bool GetProperty (NPIdentifier name, NPVariant *result);
		virtual bool SetProperty (NPIdentifier name, const NPVariant *value);
		virtual bool Invoke (NPIdentifier name, const NPVariant *args,
				     uint32_t argCount, NPVariant *result);
		virtual bool InvokeDefault (const NPVariant *args, uint32_t argCount,
					    NPVariant *result);

		virtual void CallBrowser (const char *function_name);

	private:
		NPIdentifier mTitleID;
		NPIdentifier mZoomID;
		NPIdentifier mCanCopyID;
		NPIdentifier mCanFindOnPageID;
		NPIdentifier mMagicWrapperID;

		NPIdentifier mZoomInID;
		NPIdentifier mZoomOutID;
		NPIdentifier mFindTermsID;
		NPIdentifier mFindPreviousID;
		NPIdentifier mFindNextID;

		NPObject *mMagicWrapper;
};

class ConstructablePluginObject : public ScriptablePluginObjectBase
{
	public:
		ConstructablePluginObject (NPP npp) : ScriptablePluginObjectBase (npp)
		{
		}

		virtual bool Construct (const NPVariant *args, uint32_t argCount,
					NPVariant *result);
};

#define DECLARE_NPOBJECT_CLASS_WITH_BASE(_class, ctor)	\
static NPClass s##_class##_NPClass = {			\
	NP_CLASS_STRUCT_VERSION_CTOR,			\
	ctor,						\
	ScriptablePluginObjectBase::_Deallocate,	\
	ScriptablePluginObjectBase::_Invalidate,	\
	ScriptablePluginObjectBase::_HasMethod,		\
	ScriptablePluginObjectBase::_Invoke,		\
	ScriptablePluginObjectBase::_InvokeDefault,	\
	ScriptablePluginObjectBase::_HasProperty,	\
	ScriptablePluginObjectBase::_GetProperty,	\
	ScriptablePluginObjectBase::_SetProperty,	\
	ScriptablePluginObjectBase::_RemoveProperty,	\
	ScriptablePluginObjectBase::_Enumerate,		\
	ScriptablePluginObjectBase::_Construct		\
}

#define GET_NPOBJECT_CLASS(_class) &s##_class##_NPClass

DECLARE_NPOBJECT_CLASS_WITH_BASE (ScriptablePluginObject,
				  AllocateScriptablePluginObject);

DECLARE_NPOBJECT_CLASS_WITH_BASE (ConstructablePluginObject,
				  AllocateConstructablePluginObject);

#endif // __SCRIPTABLE_PLUGIN_H__