source: trunk/PrefsPane/src/NamedEnum.m @ 1046

/* Copyright (C) 2009 Peter Speck
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

//
//  NamedEnum.m
//  GlimmerBlockerPrefsPane
//
//  Created by Peter Speck on 21/05/09.
//  Copyright 2009 Vitality. All rights reserved.
//

#import "NamedEnum.h"
#import "Xml.h"
#import "Prefs.h"

@implementation NamedEnum

- (id)initWithSemicolonList:(NSString*)encoded
{
    if (!(self = [super init]))
        return nil;
    NSArray* a = [encoded componentsSeparatedByString:@";"];
    NSInteger num = [a count];
    _valueArray = [[NSMutableArray arrayWithCapacity:num] retain];
    _defaultValueIndex = NSNotFound;
    for (int i = 0; i < num; i++) {
        NSString* s = [a objectAtIndex:i];
        if ([s hasPrefix:@"+"]) {
            _defaultValueIndex = i;
            s = [s substringFromIndex:1];
        }
        [_valueArray addObject:s];
    }
    if (_defaultValueIndex == NSNotFound) {
        NSLog(@"NamedEnum: Default value missing in semicolon list '%@'", encoded);
        _defaultValueIndex = 0;
    }
    return self;
}

- (void)dealloc
{
    [_valueArray release];
    [super dealloc];
}

- (NSString*)nameFromIndex:(NSInteger)idx
{
    if (idx >= 0 && idx <= (NSInteger)[_valueArray count])
        return [_valueArray objectAtIndex:idx];
    else
        return [_valueArray objectAtIndex:_defaultValueIndex];
}

- (NSInteger)indexFromXPath:(NSString*)xpath
                  withPrefs:(Prefs*)prefs
{
    return [self indexFromXPath:xpath withPrefs:prefs withDefault:NULL];
}

- (NSInteger)indexFromXPath:(NSString*)xpath
                  withPrefs:(Prefs*)prefs
                withDefault:(NSString*)defaultValue
{
    NSString* s = [prefs stringForXPath:xpath];
    NSString* value = [s length] ? s : defaultValue;
    NSUInteger idx = value ? [_valueArray indexOfObject:value] : NSNotFound;
    //DebugNSLog(@"NamedEnum.update: %@ = '%@'/'%@' = %d  values %@", xpath, s, value, idx, _valueArray);
    if (idx == NSNotFound)
        idx = _defaultValueIndex;
    return idx;
}

- (NSInteger)indexFromXPath:(NSString*)xpath
                   withRoot:(NSXMLElement*)rootE
                withDefault:(NSString*)defaultValue
{
    NSString* s = [Xml stringForXPath:xpath withRoot:rootE];
    NSString* value = [s length] ? s : defaultValue;
    NSUInteger idx = value ? [_valueArray indexOfObject:value] : NSNotFound;
    //DebugNSLog(@"NamedEnum.update: %@ = '%@'/'%@' = %d  values %@", xpath, s, value, idx, _valueArray);
    if (idx == NSNotFound)
        idx = _defaultValueIndex;
    return idx;
}


- (void)selectDefaultItemInPop:(NSPopUpButton*)pop
{
    [pop selectItemAtIndex:_defaultValueIndex];
}

- (void)updatePopButton:(NSPopUpButton*)pop
                toValue:(NSString*)value
{
    NSUInteger idx = value ? [_valueArray indexOfObject:value] : NSNotFound;
    //DebugNSLog(@"NamedEnum.update: '%@' = %d  values %@", value, idx, _valueArray);
    if (idx == NSNotFound)
        idx = _defaultValueIndex;
    [pop selectItemAtIndex:idx];
}

- (void)updatePopButton:(NSPopUpButton*)pop
              fromXPath:(NSString*)xpath
               withRoot:(NSXMLElement*)rootE
{
    [self updatePopButton:pop fromXPath:xpath withRoot:rootE withDefault:NULL];
}

- (void)updatePopButton:(NSPopUpButton*)pop
              fromXPath:(NSString*)xpath
               withRoot:(NSXMLElement*)rootE
            withDefault:(NSString*)defaultValue
{
    NSInteger idx = [self indexFromXPath:xpath withRoot:rootE withDefault:defaultValue];
    [pop selectItemAtIndex:idx];
}

- (NSString*)selectedPopValue:(NSPopUpButton*)pop
{
    NSInteger idx = [pop indexOfSelectedItem];
    if (idx < 0)
        idx = _defaultValueIndex;
    if (idx >= (int)[_valueArray count]) {
        NSLog(@"NamedEnum: Selected-index = %ld => too few items in value array: %@", (long)idx, _valueArray);
        return NULL;
    }
    NSString* s = [_valueArray objectAtIndex:idx];
    return [s isEqual:@"ignored"] ? NULL : s;
}

@end