/* -*- 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 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
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 * decision by deleting the provisions above and replace them with the notice
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 * the provisions above, a recipient may use your version of this file under
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 *
 * ***** END LICENSE BLOCK ***** */

#include "nsISupports.idl"
#include "nsIPluginStreamListener.idl"

interface nsIPluginInstanceOwner;
interface nsIOutputStream;

%{C++
#include "npapi.h"
#include "nsStringGlue.h"
#include "gfxASurface.h"
struct JSContext;
struct JSObject;
class gfxASurface;

#define NPRUNTIME_JSCLASS_NAME "NPObject JS wrapper class"
%}

[ptr] native JSContextPtr(JSContext);
[ptr] native JSObjectPtr(JSObject);
[ptr] native gfxASurfacePtr(gfxASurface);

[uuid(84994340-E120-4051-824F-D4EE8AEF1A3E)]
interface nsIPluginInstance : nsISupports
{
    /**
     * Initializes a newly created plugin instance.
     * 
     * @param aOwner - the plugin instance owner
     * @param aMime - the mime type for the instance
     * @result      - NS_OK if this operation was successful
     */
    void initialize(in nsIPluginInstanceOwner aOwner, in string aMIMEType);

    /**
     * Called to instruct the plugin instance to start. This will be
     * called after the plugin is first created and initialized, and
     * may be called after the plugin is stopped (via the Stop method)
     * if the plugin instance is returned to in the browser window's
     * history.
     *
     * @result - NS_OK if this operation was successful
     */
    void start();

    /**
     * Called to instruct the plugin instance to stop, thereby
     * suspending its state.  This method will be called whenever the
     * browser window goes on to display another page and the page
     * containing the plugin goes into the window's history list.
     *
     * @result - NS_OK if this operation was successful
     */
    void stop();

    /**
     * Called when the window containing the plugin instance changes.
     *
     * (Corresponds to NPP_SetWindow.)
     *
     * @param aWindow - the plugin window structure
     * @result        - NS_OK if this operation was successful
     */
    void setWindow(in NPWindowPtr aWindow);

    /**
     * Called to tell the plugin that the initial src/data stream is
     * ready.  Expects the plugin to return a nsIPluginStreamListener.
     *
     * (Corresponds to NPP_NewStream.)
     *
     * @param aListener - listener the browser will use to give the plugin the data
     * @result          - NS_OK if this operation was successful
     */
    void newStreamToPlugin(out nsIPluginStreamListener aListener);

    /**
     * This operation is called by the plugin instance when it wishes to send
     * a stream of data to the browser. It constructs a new output stream to which
     * the plugin may send the data. When complete, the Close and Release methods
     * should be called on the output stream.
     *
     * (Corresponds to NPN_NewStream.)
     *
     * @param aType   - MIME type of the stream to create
     * @param aTarget - the target window name to receive the data
     * @param aResult - the resulting output stream
     * @result        - NS_OK if this operation was successful
     */
    void newStreamFromPlugin(in string aType, in string aTarget, out nsIOutputStream aResult);

    /**
     * Called to instruct the plugin instance to print itself to a printer.
     *
     * (Corresponds to NPP_Print.)
     *
     * @param aPlatformPrint - platform-specific printing information
     * @result               - NS_OK if this operation was successful
     */
    void print(in NPPrintPtr aPlatformPrint);

    /**
     * Handles an event.
     *
     * 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.
     *
     * (Corresponds to NPP_HandleEvent.)
     *
     * @param aEvent   - the event to be handled
     * @param aHandled - if non-NULL, set to the NPAPI NPP_HandleEvent
     *                   return value
     * @result - NS_OK if this operation was successful
     */
    void handleEvent(in voidPtr aEvent, out PRInt16 aHandled);

    /** 
     * Corresponds to NPN_InvalidateRect
     */
    void invalidateRect(in NPRectPtr aRect);

    /** 
     * Corresponds to NPN_InvalidateRegion
     */
    void invalidateRegion(in NPRegion aRegion);

    /** 
     * Corresponds to NPN_ForceRedraw
     */
    void forceRedraw();
    
    /**
     * Returns the MIME type of the plugin instance. 
     *
     * (Corresponds to NPP_New's MIMEType argument.)
     *
     * @param aMIMEType - resulting MIME type
     * @result          - NS_OK if this operation was successful
     */
    void getMIMEType([const, shared] out string aValue);

    /**
     * Get the JavaScript context to this plugin instance.
     *
     * @param aJSContext - the resulting JavaScript context
     * @result           - NS_OK if this operation was successful
     */
    readonly attribute JSContextPtr JSContext;

    attribute nsIPluginInstanceOwner owner;
    
    /**
     * This operation causes status information to be displayed on the window
     * associated with the plugin instance. 
     *
     * (Corresponds to NPN_Status.)
     *
     * @param aMessage - the status message to display
     * @result         - NS_OK if this operation was successful
     */
    void showStatus(in string aMessage);

    /**
     * Drop our reference to our owner.
     */
    void invalidateOwner();

    JSObjectPtr GetJSObject(in JSContextPtr cx);

    readonly attribute AString formValue;

    void pushPopupsEnabledState(in boolean aEnabled);
    void popPopupsEnabledState();

    readonly attribute PRUint16 pluginAPIVersion;

    void defineJavaProperties();

    PRBool shouldCache();

    PRBool isWindowless();

    PRBool isTransparent();

    void getValueFromPlugin(in NPPVariable variable, in voidPtr aValue);

    PRInt32 getDrawingModel();

    /**
     * async version of SetWindow call
     *
     * @param aWindow  - the plugin window structure
     */
    void asyncSetWindow(in NPWindowPtr aWindow);

    /**
     * Call this each time after the plugin has been painted to the screen
     */
    void notifyPainted();

    /**
     * This should return a valid gfxASurface pointer, or null if there is nothing to render yet.
     */
    void getSurface(out gfxASurfacePtr aSurface);

    /**
     * @return true if plugin module supports async rendering
     */
    PRBool useAsyncPainting();
};
