/*

     File: MovieControllerLayer.m

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 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

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 */

#import <WebKit/npapi.h>

#import <WebKit/npfunctions.h>

#import <WebKit/npruntime.h>

#import <QuartzCore/QuartzCore.h>

#import <QTKit/QTKit.h>

#import "MovieControllerLayer.h"

// Browser function table

static NPNetscapeFuncs* browser;

// Structure for per-instance storage

typedef struct PluginObject

{

    NPP npp;

    NPWindow window;

    CALayer *rootLayer;

    MovieControllerLayer *controllerLayer;

    QTMovieLayer *movieLayer;

    CALayer *mouseDownLayer;

    NSURL *movieURL;

    QTMovie *movie;

} PluginObject;

NPError NPP_New(NPMIMEType pluginType, NPP instance, uint16_t mode, int16_t argc, char* argn[], char* argv[], NPSavedData* saved);

NPError NPP_Destroy(NPP instance, NPSavedData** save);

NPError NPP_SetWindow(NPP instance, NPWindow* window);

NPError NPP_NewStream(NPP instance, NPMIMEType type, NPStream* stream, NPBool seekable, uint16* stype);

NPError NPP_DestroyStream(NPP instance, NPStream* stream, NPReason reason);

int32_t NPP_WriteReady(NPP instance, NPStream* stream);

int32_t NPP_Write(NPP instance, NPStream* stream, int32_t offset, int32_t len, void* buffer);

void NPP_StreamAsFile(NPP instance, NPStream* stream, const char* fname);

void NPP_Print(NPP instance, NPPrint* platformPrint);

int16_t NPP_HandleEvent(NPP instance, void* event);

void NPP_URLNotify(NPP instance, const char* URL, NPReason reason, void* notifyData);

NPError NPP_GetValue(NPP instance, NPPVariable variable, void *value);

NPError NPP_SetValue(NPP instance, NPNVariable variable, void *value);

#pragma export on

// Mach-o entry points

NPError NP_Initialize(NPNetscapeFuncs *browserFuncs);

NPError NP_GetEntryPoints(NPPluginFuncs *pluginFuncs);

void NP_Shutdown(void);

#pragma export off

NPError NP_Initialize(NPNetscapeFuncs* browserFuncs)

{

    browser = browserFuncs;

    return NPERR_NO_ERROR;

}

NPError NP_GetEntryPoints(NPPluginFuncs* pluginFuncs)

{

    pluginFuncs->version = 11;

    pluginFuncs->size = sizeof(pluginFuncs);

    pluginFuncs->newp = NPP_New;

    pluginFuncs->destroy = NPP_Destroy;

    pluginFuncs->setwindow = NPP_SetWindow;

    pluginFuncs->newstream = NPP_NewStream;

    pluginFuncs->destroystream = NPP_DestroyStream;

    pluginFuncs->asfile = NPP_StreamAsFile;

    pluginFuncs->writeready = NPP_WriteReady;

    pluginFuncs->write = (NPP_WriteProcPtr)NPP_Write;

    pluginFuncs->print = NPP_Print;

    pluginFuncs->event = NPP_HandleEvent;

    pluginFuncs->urlnotify = NPP_URLNotify;

    pluginFuncs->getvalue = NPP_GetValue;

    pluginFuncs->setvalue = NPP_SetValue;

    return NPERR_NO_ERROR;

}

void NP_Shutdown(void)

{

}

NPError NPP_New(NPMIMEType pluginType, NPP instance, uint16_t mode, int16_t argc, char* argn[], char* argv[], NPSavedData* saved)

{

    // Create per-instance storage

    PluginObject *obj = (PluginObject *)malloc(sizeof(PluginObject));

    bzero(obj, sizeof(PluginObject));

    obj->npp = instance;

    instance->pdata = obj;

    // Ask the browser if it supports the Core Animation drawing model

    NPBool supportsCoreAnimation;

    if (browser->getvalue(instance, NPNVsupportsCoreAnimationBool, &supportsCoreAnimation) != NPERR_NO_ERROR)

        supportsCoreAnimation = FALSE;

    if (!supportsCoreAnimation)

        return NPERR_INCOMPATIBLE_VERSION_ERROR;

    // If the browser supports the Core Animation drawing model, enable it.

    browser->setvalue(instance, NPPVpluginDrawingModel, (void *)NPDrawingModelCoreAnimation);

    // If the browser supports the Cocoa event model, enable it.

    NPBool supportsCocoa;

    if (browser->getvalue(instance, NPNVsupportsCocoaBool, &supportsCocoa) != NPERR_NO_ERROR)

        supportsCocoa = FALSE;

    if (!supportsCocoa)

        return NPERR_INCOMPATIBLE_VERSION_ERROR;

    browser->setvalue(instance, NPPVpluginEventModel, (void *)NPEventModelCocoa);

    for (int16_t i = 0; i < argc; i++) {

        if (strcasecmp(argn[i], "movieurl") == 0) {

            NSString *urlString = [NSString stringWithUTF8String:argv[i]];

            if (urlString) 

                obj->movieURL = [[NSURL URLWithString:urlString] retain];

            break;

        }

    }

    return NPERR_NO_ERROR;

}

NPError NPP_Destroy(NPP instance, NPSavedData** save)

{

    // Free per-instance storage

    PluginObject *obj = instance->pdata;

    [obj->movie stop];

    [obj->rootLayer release];

    free(obj);

    return NPERR_NO_ERROR;

}

NPError NPP_SetWindow(NPP instance, NPWindow* window)

{

    PluginObject *obj = instance->pdata;

    obj->window = *window;

    return NPERR_NO_ERROR;

}

NPError NPP_NewStream(NPP instance, NPMIMEType type, NPStream* stream, NPBool seekable, uint16* stype)

{

    *stype = NP_ASFILEONLY;

    return NPERR_NO_ERROR;

}

NPError NPP_DestroyStream(NPP instance, NPStream* stream, NPReason reason)

{

    return NPERR_NO_ERROR;

}

int32_t NPP_WriteReady(NPP instance, NPStream* stream)

{

    return 0;

}

int32_t NPP_Write(NPP instance, NPStream* stream, int32_t offset, int32_t len, void* buffer)

{

    return 0;

}

void NPP_StreamAsFile(NPP instance, NPStream* stream, const char* fname)

{

}

void NPP_Print(NPP instance, NPPrint* platformPrint)

{

}

static void handleMouseDown(PluginObject *obj, NPCocoaEvent *event)

{

    CGPoint point = CGPointMake(event->data.mouse.pluginX, 

                                // Flip the y coordinate

                                obj->window.height - event->data.mouse.pluginY);

    obj->mouseDownLayer = [obj->rootLayer hitTest:point];

    if (obj->mouseDownLayer == obj->controllerLayer) {

        [obj->controllerLayer handleMouseDown:[obj->rootLayer convertPoint:point toLayer:obj->controllerLayer]];

        return;

    }    

}

static void togglePlayPause(PluginObject *obj)

{

    if (!obj->movie)

        return;

    if ([obj->movie rate] == 0)

        [obj->movie play];

    else

        [obj->movie stop];

}

static void handleMouseUp(PluginObject *obj, NPCocoaEvent *event)

{

    CGPoint point = CGPointMake(event->data.mouse.pluginX, 

                                // Flip the y coordinate

                                obj->window.height - event->data.mouse.pluginY);

    CALayer *mouseDownLayer = obj->mouseDownLayer;

    obj->mouseDownLayer = nil;

    if (mouseDownLayer == obj->controllerLayer) {

        [obj->controllerLayer handleMouseUp:[obj->rootLayer convertPoint:point toLayer:obj->controllerLayer]];

        return;

    }

}

static void handleMouseDragged(PluginObject *obj, NPCocoaEvent *event)

{

    CGPoint point = CGPointMake(event->data.mouse.pluginX, 

                                // Flip the y coordinate

                                obj->window.height - event->data.mouse.pluginY);

    if (obj->mouseDownLayer == obj->controllerLayer) {

        [obj->controllerLayer handleMouseDragged:[obj->rootLayer convertPoint:point toLayer:obj->controllerLayer]];

        return;

    }    

}

static void handleMouseEntered(PluginObject *obj)

{

    // Show the controller layer.

    obj->controllerLayer.opacity = 1.0;

}

static void handleMouseExited(PluginObject *obj)

{

    // Hide the controller layer if the movie is playing.

    if ([obj->movie rate])

        obj->controllerLayer.opacity = 0.0;

}

static int handleKeyDown(PluginObject *obj, NPCocoaEvent *event)

{

    NSString *characters = (NSString *)event->data.key.characters;

    if ([characters length] == 1 && [characters characterAtIndex:0] == ' ') {

        togglePlayPause(obj);

        return 1;

    }

    return 0;

}

static int handleScrollEvent(PluginObject *obj, NPCocoaEvent *event)

{

    double delta = event->data.mouse.deltaY;

    if (delta < 0)

        [obj->movie stepForward];

    else

        [obj->movie stepBackward];

    return 0;

}

int16_t NPP_HandleEvent(NPP instance, void* event)

{

    PluginObject *obj = instance->pdata;

    NPCocoaEvent *cocoaEvent = event;

    switch(cocoaEvent->type) {

        case NPCocoaEventMouseDown:

            handleMouseDown(obj, cocoaEvent);

            return 1;

        case NPCocoaEventMouseUp:

            handleMouseUp(obj, cocoaEvent);

            return 1;

        case NPCocoaEventMouseDragged:

            handleMouseDragged(obj, cocoaEvent);

            return 1;

        case NPCocoaEventMouseEntered:

            handleMouseEntered(obj);

            return 1;

        case NPCocoaEventMouseExited:

            handleMouseExited(obj);

            return 1;

        case NPCocoaEventKeyDown:

            return handleKeyDown(obj, cocoaEvent);

        case NPCocoaEventScrollWheel:

            return handleScrollEvent(obj, cocoaEvent);

    }

    return 0;

}

void NPP_URLNotify(NPP instance, const char* url, NPReason reason, void* notifyData)

{

}

NPError NPP_GetValue(NPP instance, NPPVariable variable, void *value)

{

    PluginObject *obj = instance->pdata;

    switch (variable) {

        case NPPVpluginCoreAnimationLayer:

            if (!obj->rootLayer) {

                // Setup layer hierarchy.

                obj->rootLayer = [[CALayer layer] retain];

                obj->movieLayer = [QTMovieLayer layer];

                obj->movieLayer.autoresizingMask = kCALayerWidthSizable | kCALayerHeightSizable;

                [obj->rootLayer addSublayer:obj->movieLayer];

                obj->controllerLayer = [MovieControllerLayer layer];

                [obj->rootLayer addSublayer:obj->controllerLayer];

                if (obj->movieURL) {

                    NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:obj->movieURL, QTMovieURLAttribute,

                                                [NSNumber numberWithBool:YES], QTMovieOpenForPlaybackAttribute, 

                                                [NSNumber numberWithBool:YES], QTMovieLoopsAttribute, 

                                                nil];

                    obj->movie = [QTMovie movieWithAttributes:attributes error:nil];

                    if (obj->movie) {

                        obj->movieLayer.movie = obj->movie;

                        [obj->controllerLayer setMovie:obj->movie];

                    }

                }

            }

            // Make sure to return a retained layer

            *((CALayer **)value) = [obj->rootLayer retain];

            return NPERR_NO_ERROR;

        default:

            return NPERR_GENERIC_ERROR;

    }

}

NPError NPP_SetValue(NPP instance, NPNVariable variable, void *value)

{

    return NPERR_GENERIC_ERROR;

}