/*

    File: SayItView.h

    Abstract: A WebKit plug-in that can speak text passed from JavaScript;

        For more on plug-in programming and scripting see "Web Kit Plug-In

        Programming Topics" in the ADC Reference Library

    Version: 1.0

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    The Apple Software is provided by Apple on an "AS IS" basis.  APPLE

    MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

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    Copyright � 2006 Apple Computer, Inc., All Rights Reserved

*/ 

#import "SayItView.h"

@implementation SayItView

/*

 * plugInViewWithArguments is required by the WebPlugIn protocol

 * arguments is an NSDictionary consisting of various properties 

 * the plug-in was created with, including dimensions and PARAM

 * elements

 */

+ (NSView *)plugInViewWithArguments:(NSDictionary *)arguments

{

    return [[[self alloc] initWithFrame:NSZeroRect] autorelease];

}

/*

 * Optional WebPlugIn methods

 * Implement these to respond to various events during your plug-in's life cycle

 */

- (void)webPlugInInitialize

{

    if (!synth) {

        synth = [[NSSpeechSynthesizer alloc] init]; 

        [synth setDelegate:self];

    }

}

- (void)webPlugInDestroy

{

    if (synth) {

        [synth release];

        synth = nil;

    }

}

/*

 * WebScripting protocol methods

 * Implement these to allow JavaScript/Plug-In communication

 */

// Decide which methods will be exposed to JavaScript code

+ (BOOL)isSelectorExcludedFromWebScript:(SEL)selector

{

    if (selector == @selector(startSpeakingString:) || 

        selector == @selector(stopSpeaking))

        return NO;

    return YES;

}

// Produce JavaScript-readable function names that will be

// mapped to our exposed plug-in methods (see isSelectorExcludedFromWebScript:)

+ (NSString *)webScriptNameForSelector:(SEL)sel

{

    if (sel == @selector(startSpeakingString:))

        return @"startSpeakingString";

    else if (sel == @selector(stopSpeaking))

        return @"stopSpeaking";

    return nil;

}

// Requested by the hosting Web Kit application to make JavaScript access possible

- (id)objectForWebScript

{

    return self;

}

// Main plug-in functionality; activate and deactivate the speech synthesizer

- (void)startSpeakingString:(NSString *)sayWhat

{

    if (synth) {

        [synth stopSpeaking];

        [synth startSpeakingString:sayWhat];

    }

}

- (void)stopSpeaking

{

    if (synth)

        [synth stopSpeaking];

}

@end