/*

 * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.

 * Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com)

 *

 * 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 name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission. 

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 OR ITS 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.

 */

#import "AppleScriptController.h"

#import <WebKit/WebView.h>

#import <WebKit/WebViewPrivate.h>   // for aeDescByEvaluatingJavaScriptFromString, which is pending API review

@implementation AppleScriptController

+ (BOOL)isSelectorExcludedFromWebScript:(SEL)aSelector

{

    if (aSelector == @selector(doJavaScript:))

        return NO;

    return YES;

}

+ (NSString *)webScriptNameForSelector:(SEL)aSelector

{

    if (aSelector == @selector(doJavaScript:))

        return @"doJavaScript";

    return nil;

}

- (id)initWithWebView:(WebView *)wv

{

    self = [super init];

    webView = wv;

    return self;

}

static id convertAEDescToObject(NSAppleEventDescriptor *aeDesc)

{

    id value = nil;

    DescType descType = [aeDesc descriptorType];

    switch (descType) {

        case typeUnicodeText:

            value = [NSString stringWithFormat:@"\"%@\"", [aeDesc stringValue]];

            break;

        case typeLongDateTime:

            if ([[aeDesc data] length] == sizeof(LongDateTime)) {

                LongDateTime d;

                [[aeDesc data] getBytes:&d];

                value = [NSString stringWithFormat:@"%016llX", (unsigned long long)d];

            }

            break;

        case typeAEList:

            value = [NSMutableString stringWithString:@"("];

            int numItems = [aeDesc numberOfItems];

            for (int i = 0; i < numItems; ++i) {

                if (i != 0)

                    [(NSMutableString*)value appendString:@", "];

                id obj = convertAEDescToObject([aeDesc descriptorAtIndex:(i + 1)]);

                [(NSMutableString*)value appendString:[obj description]];

            }

            [(NSMutableString*)value appendString:@")"];

            break;

        case typeType: {

            OSType type = [aeDesc typeCodeValue];

            char typeStr[5];

            typeStr[0] = type >> 24;

            typeStr[1] = type >> 16;

            typeStr[2] = type >> 8;

            typeStr[3] = type;

            typeStr[4] = 0;

            value = [NSString stringWithFormat:@"'%s'", typeStr];

            break;

        }

    }

    if (!value)

        value = [aeDesc stringValue];

    if (!value)

        value = [aeDesc data];

    return value;

}

- (NSString *)doJavaScript:(NSString *)aString

{

    NSAppleEventDescriptor *aeDesc = [webView aeDescByEvaluatingJavaScriptFromString:aString];

    if (!aeDesc)

        return @"(null)";

    DescType descType = [aeDesc descriptorType];

    char descTypeStr[5];

    descTypeStr[0] = descType >> 24;

    descTypeStr[1] = descType >> 16;

    descTypeStr[2] = descType >> 8;

    descTypeStr[3] = descType;

    descTypeStr[4] = 0;

    return [NSString stringWithFormat:@"%@ ('%s')", convertAEDescToObject(aeDesc), descTypeStr];

}

@end