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/**
STConversation
Copyright (c) 2002 Free Software Foundation
Written by: Stefan Urbanek
Date: 2003 Sep 21
This file is part of the StepTalk project.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#import "STConversation.h"
#import <Foundation/NSDebug.h>
#import <Foundation/NSException.h>
#import "STEnvironment.h"
#import "STEngine.h"
#import "STLanguageManager.h"
@implementation STConversation
/** Creates a new conversation with environment created using default
description and default language. */
+ conversation
{
STEnvironment *env = [STEnvironment environmentWithDefaultDescription];
NSLog(@"DEPRECATED");
return AUTORELEASE([[self alloc] initWithContext:env language:nil]);
}
+ conversationWithContext:(STContext *)aContext
language:(NSString *)aLanguage
{
return AUTORELEASE([[self alloc] initWithContext:aContext
language:aLanguage]);
}
- (bycopy id)resultByCopy
{
return [self result];
}
- (id)runScriptFromString:(NSString *)aString
{
NSLog(@"Warning: runScriptFromString: in STConversation is deprecated,"
@" use -interpretScript: and -result instead.");
[self interpretScript:aString];
return [self result];
}
/** Returns all languages that are known in the receiver. Should be used by
remote calls instead of NSLanguage query which gives local list of
languages. */
- (bycopy NSArray *)knownLanguages
{
return [[STLanguageManager defaultManager] availableLanguages];
}
/** Creates a new conversation with environment created using default
description and language with name <var>langName</var>. */
+ conversationWithEnvironment:(STEnvironment *)env
language:(NSString *)langName
{
STConversation *c;
NSLog(@"WARNING: +[STConversation conversationWithEnvironment:language:]"
@" is deprecated, use conversationWithContext:language: instead.");
c = [[self alloc] initWithContext:env language:langName];
return AUTORELEASE(c);
}
- initWithEnvironment:(STEnvironment *)env
language:(NSString *)langName
{
NSLog(@"WARNING: -[STConversation initWithEnvironment:language:]"
@" is deprecated, use initWithContext:language: instead.");
return [self initWithContext:env language:langName];
}
- initWithContext:(STContext *)aContext
language:(NSString *)aLanguage
{
if ((self = [super init]) != nil)
{
STLanguageManager *manager = [STLanguageManager defaultManager];
NSDebugLLog(@"STConversation",@"Creating conversation %@", self);
if(!aLanguage || [aLanguage isEqual:@""])
{
languageName = RETAIN([manager defaultLanguage]);
}
else
{
languageName = RETAIN(aLanguage);
}
context = RETAIN(aContext);
}
return self;
}
- (void)dealloc
{
NSDebugLLog(@"STConversation",@"Deallocating conversation %@", self);
RELEASE(languageName);
RELEASE(context);
RELEASE(engine);
RELEASE(returnValue);
[super dealloc];
}
- (void)_createEngine
{
ASSIGN(engine,[STEngine engineForLanguage:languageName]);
}
- (void)setLanguage:(NSString *)newLanguage
{
if(![newLanguage isEqual:languageName])
{
RELEASE(engine);
engine = nil;
ASSIGN(languageName, newLanguage);
}
}
/** Return name of the language used in the receiver conversation */
- (NSString *)language
{
return languageName;
}
- (STEnvironment *)environment
{
NSLog(@"WARNING: -[STConversation environment] is deprecated,"
@" use -context instead.");
return (STEnvironment *)context;
}
- (STContext *)context
{
return context;
}
- (void)interpretScript:(bycopy NSString *)aString
{
if(!engine)
{
[self _createEngine];
}
ASSIGN(returnValue, [engine interpretScript: aString
inContext: context]);
}
- (id)result
{
return returnValue;
}
@end
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