Bookmark.m

/*
 Bookmark model abstraction
 
 Copyright 2013 Thincast Technologies GmbH, Author: Dorian Johnson
 
 This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
 If a copy of the MPL was not distributed with this file, You can obtain one at
 http://mozilla.org/MPL/2.0/.
 */
 
#import "Bookmark.h"
#import "TSXAdditions.h"
#import "Utils.h"
 
#import "GlobalDefaults.h"
 
@interface ComputerBookmark (Private)
- (void)willChangeValueForKeyPath:(NSString *)keyPath;
- (void)didChangeValueForKeyPath:(NSString *)keyPath;
@end
 
@implementation ComputerBookmark
 
@synthesize parent = _parent, uuid = _uuid, label = _label, image = _image;
@synthesize params = _connection_params, conntectedViaWLAN = _connected_via_wlan;
 
- (id)init
{
  if (!(self = [super init]))
    return nil;
 
  _uuid = [[NSString stringWithUUID] retain];
  _label = @"";
  _connected_via_wlan = NO;
  return self;
}
 
// Designated initializer.
- (id)initWithConnectionParameters:(ConnectionParams *)params
{
  if (!(self = [self init]))
    return nil;
 
  _connection_params = [params copy];
  _connected_via_wlan = NO;
  return self;
}
 
- (id)initWithCoder:(NSCoder *)decoder
{
  if (!(self = [self init]))
    return nil;
 
  if (![decoder allowsKeyedCoding])
    [NSException raise:NSInvalidArgumentException format:@"coder must support keyed archiving"];
 
  if ([decoder containsValueForKey:@"uuid"])
  {
    [_uuid release];
    _uuid = [[decoder decodeObjectForKey:@"uuid"] retain];
  }
 
  if ([decoder containsValueForKey:@"label"])
    [self setLabel:[decoder decodeObjectForKey:@"label"]];
 
  if ([decoder containsValueForKey:@"connectionParams"])
  {
    [_connection_params release];
    _connection_params = [[decoder decodeObjectForKey:@"connectionParams"] retain];
  }
 
  return self;
}
 
- (id)initWithBaseDefaultParameters
{
  return [self initWithConnectionParameters:[[[ConnectionParams alloc]
                                                initWithBaseDefaultParameters] autorelease]];
}
 
- (id)copy
{
  ComputerBookmark *copy = [[[self class] alloc] init];
  [copy setLabel:[self label]];
  copy->_connection_params = [_connection_params copy];
  return copy;
}
 
- (id)copyWithUUID
{
  ComputerBookmark *copy = [self copy];
  copy->_uuid = [[self uuid] copy];
  return copy;
}
 
- (void)encodeWithCoder:(NSCoder *)coder
{
  if (![coder allowsKeyedCoding])
    [NSException raise:NSInvalidArgumentException format:@"coder must support keyed archiving"];
 
  [coder encodeObject:_uuid forKey:@"uuid"];
  [coder encodeObject:_label forKey:@"label"];
  [coder encodeObject:_connection_params forKey:@"connectionParams"];
}
 
- (void)dealloc
{
  _parent = nil;
  [_label release];
  _label = nil;
  [_uuid release];
  _uuid = nil;
  [_connection_params release];
  _connection_params = nil;
  [super dealloc];
}
 
- (UIImage *)image
{
  return nil;
}
 
- (BOOL)isEqual:(id)object
{
  return [object respondsToSelector:@selector(uuid)] && [[object uuid] isEqual:_uuid];
}
 
- (NSString *)description
{
  return ([self label] != nil) ? [self label] : _uuid;
}
 
- (BOOL)validateValue:(id *)val forKey:(NSString *)key error:(NSError **)error
{
  NSString *string_value = *val;
 
  if ([key isEqualToString:@"label"])
  {
    if (![[string_value stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]
            length])
    {
      if (error)
        *error = [NSError
            errorWithDomain:@""
                       code:NSKeyValueValidationError
                   userInfo:
                       [NSDictionary
                           dictionaryWithObjectsAndKeys:
                               NSLocalizedString(
                                   @"Connection labels cannot be blank",
                                   @"Bookmark data validation: label blank title."),
                               NSLocalizedDescriptionKey,
                               NSLocalizedString(
                                   @"Please enter the short description of this Connection "
                                   @"that will appear in the Connection list.",
                                   @"Bookmark data validation: label blank message."),
                               NSLocalizedRecoverySuggestionErrorKey, nil]];
      return NO;
    }
  }
 
  return YES;
}
 
- (BOOL)validateValue:(id *)val forKeyPath:(NSString *)keyPath error:(NSError **)error
{
  // Could be used to validate params.hostname, params.password, params.port, etc.
  return [super validateValue:val forKeyPath:keyPath error:error];
}
 
- (BOOL)isDeletable
{
  return YES;
}
- (BOOL)isMovable
{
  return YES;
}
- (BOOL)isRenamable
{
  return YES;
}
- (BOOL)hasImmutableHost
{
  return NO;
}
 
#pragma mark Custom KVC
 
- (void)setValue:(id)value forKeyPath:(NSString *)keyPath
{
  if ([keyPath isEqualToString:@"params.resolution"])
  {
    int width, height;
    TSXScreenOptions type;
    if (ScanScreenResolution(value, &width, &height, &type))
    {
      [_connection_params willChangeValueForKey:@"resolution"];
      [[self params] setInt:type forKey:@"screen_resolution_type"];
 
      if (type == TSXScreenOptionFixed)
      {
        [[self params] setInt:width forKey:@"width"];
        [[self params] setInt:height forKey:@"height"];
      }
      [_connection_params didChangeValueForKey:@"resolution"];
    }
    else
      [NSException raise:NSInvalidArgumentException
                  format:@"%s got invalid screen resolution '%@'", __func__, value];
  }
  else
  {
    [self willChangeValueForKeyPath:keyPath];
    [super setValue:value forKeyPath:keyPath];
    [self didChangeValueForKeyPath:keyPath];
  }
}
 
- (id)valueForKeyPath:(NSString *)keyPath
{
  if ([keyPath isEqualToString:@"params.resolution"])
    return ScreenResolutionDescription([[self params] intForKey:@"screen_resolution_type"],
                                       [[self params] intForKey:@"width"],
                                       [[self params] intForKey:@"height"]);
 
  return [super valueForKeyPath:keyPath];
}
 
- (void)observeValueForKeyPath:(NSString *)keyPath
                      ofObject:(id)object
                        change:(NSDictionary *)change
                       context:(void *)context
{
  if ([[change objectForKey:NSKeyValueChangeNotificationIsPriorKey] boolValue])
    [self willChangeValueForKeyPath:keyPath];
  else
    [self didChangeValueForKeyPath:keyPath];
}
 
- (NSDictionary *)targetForChangeNotificationForKeyPath:(NSString *)keyPath
{
  NSString *changed_key = keyPath;
  NSObject *changed_object = self;
 
  if ([keyPath rangeOfString:@"params."].location == 0)
  {
    changed_key = [keyPath substringFromIndex:[@"params." length]];
    changed_object = _connection_params;
  }
 
  return [NSDictionary
      dictionaryWithObjectsAndKeys:changed_key, @"key", changed_object, @"object", nil];
}
 
- (void)willChangeValueForKeyPath:(NSString *)keyPath
{
  NSDictionary *target = [self targetForChangeNotificationForKeyPath:keyPath];
  [[target objectForKey:@"object"] willChangeValueForKey:[target objectForKey:@"key"]];
}
 
- (void)didChangeValueForKeyPath:(NSString *)keyPath
{
  NSDictionary *target = [self targetForChangeNotificationForKeyPath:keyPath];
  [[target objectForKey:@"object"] didChangeValueForKey:[target objectForKey:@"key"]];
}
 
- (ConnectionParams *)copyMarkedParams
{
  ConnectionParams *param_copy = [[self params] copy];
  [param_copy setValue:[self uuid] forKey:@"_bookmark_uuid"];
  return param_copy;
}
 
#pragma mark No children
- (NSUInteger)numberOfChildren
{
  return 0;
}
- (NSUInteger)numberOfDescendants
{
  return 1;
}
- (BookmarkBase *)childAtIndex:(NSUInteger)index
{
  return nil;
}
- (NSUInteger)indexOfChild:(BookmarkBase *)child
{
  return 0;
}
- (void)removeChild:(BookmarkBase *)child
{
}
- (void)addChild:(BookmarkBase *)child
{
}
- (void)addChild:(BookmarkBase *)child afterExistingChild:(BookmarkBase *)existingChild
{
}
- (void)addChild:(BookmarkBase *)child atIndex:(NSInteger)index
{
}
- (BOOL)hasDescendant:(BookmarkBase *)needle
{
  return NO;
}
- (BOOL)canContainChildren
{
  return NO;
}
@end