ScreenSelectionController.m

/*
 controller for screen settings selection
 
 Copyright 2013 Thincast Technologies GmbH, Author: Martin Fleisz
 
 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 "ScreenSelectionController.h"
#import "Utils.h"
#import "OrderedDictionary.h"
#import "ConnectionParams.h"
 
@interface ScreenSelectionController (Private)
- (NSString *)keyPathForKey:(NSString *)key;
@end
 
@implementation ScreenSelectionController
 
- (id)initWithConnectionParams:(ConnectionParams *)params
{
  return [self initWithConnectionParams:params keyPath:nil];
}
 
- (id)initWithConnectionParams:(ConnectionParams *)params keyPath:(NSString *)keyPath
{
  self = [super initWithStyle:UITableViewStyleGrouped];
  if (self)
  {
    _params = [params retain];
    _keyPath = (keyPath != nil ? [keyPath retain] : nil);
 
    _color_options = (OrderedDictionary *)[SelectionForColorSetting() retain];
    _resolution_modes = [ResolutionModes() retain];
 
    // init current selections
    NSUInteger idx = [_color_options
        indexForValue:[NSNumber
                          numberWithInt:[_params
                                            intForKeyPath:[self keyPathForKey:@"colors"]]]];
    _selection_color = (idx != NSNotFound) ? idx : 0;
 
    idx = [_resolution_modes
        indexOfObject:ScreenResolutionDescription(
                          [_params
                              intForKeyPath:[self keyPathForKey:@"screen_resolution_type"]],
                          [_params intForKeyPath:[self keyPathForKey:@"width"]],
                          [_params intForKeyPath:[self keyPathForKey:@"height"]])];
    _selection_resolution = (idx != NSNotFound) ? idx : 0;
  }
  return self;
}
 
- (void)dealloc
{
  [super dealloc];
  [_params autorelease];
  [_keyPath autorelease];
  [_color_options autorelease];
  [_resolution_modes autorelease];
}
 
- (NSString *)keyPathForKey:(NSString *)key
{
  if (_keyPath)
    return [_keyPath stringByAppendingFormat:@".%@", key];
  return key;
}
 
#pragma mark - View lifecycle
 
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
  // Return YES for supported orientations
  return YES;
}
 
#pragma mark - Table view data source
 
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
  return 2;
}
 
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
  // Return the number of rows in the section.
  if (section == 0)
    return [_color_options count];
  return [_resolution_modes count] + 2; // +2 for custom width/height input fields
}
 
- (UITableViewCell *)tableView:(UITableView *)tableView
         cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  UITableViewCell *cell = nil;
  switch ([indexPath section])
  {
    case 0:
      cell = [self tableViewCellFromIdentifier:TableCellIdentifierMultiChoice];
      [[cell textLabel] setText:[_color_options keyAtIndex:[indexPath row]]];
      break;
 
    case 1:
      if ([indexPath row] < [_resolution_modes count])
      {
        cell = [self tableViewCellFromIdentifier:TableCellIdentifierMultiChoice];
        [[cell textLabel] setText:[_resolution_modes objectAtIndex:[indexPath row]]];
      }
      else
        cell = [self tableViewCellFromIdentifier:TableCellIdentifierText];
      break;
 
    default:
      break;
  }
 
  if ([indexPath section] == 1)
  {
    BOOL enabled = ([_params intForKeyPath:[self keyPathForKey:@"screen_resolution_type"]] ==
                    TSXScreenOptionCustom);
    if ([indexPath row] == [_resolution_modes count])
    {
      int value = [_params intForKeyPath:[self keyPathForKey:@"width"]];
      EditTextTableViewCell *textCell = (EditTextTableViewCell *)cell;
      [[textCell label] setText:NSLocalizedString(@"Width", @"Custom Screen Width")];
      [[textCell textfield] setText:[NSString stringWithFormat:@"%d", value ? value : 800]];
      [[textCell textfield] setKeyboardType:UIKeyboardTypeNumberPad];
      [[textCell label] setEnabled:enabled];
      [[textCell textfield] setEnabled:enabled];
      [[textCell textfield] setTag:1];
    }
    else if ([indexPath row] == ([_resolution_modes count] + 1))
    {
      int value = [_params intForKeyPath:[self keyPathForKey:@"height"]];
      EditTextTableViewCell *textCell = (EditTextTableViewCell *)cell;
      [[textCell label] setText:NSLocalizedString(@"Height", @"Custom Screen Height")];
      [[textCell textfield] setText:[NSString stringWithFormat:@"%d", value ? value : 600]];
      [[textCell textfield] setKeyboardType:UIKeyboardTypeNumberPad];
      [[textCell label] setEnabled:enabled];
      [[textCell textfield] setEnabled:enabled];
      [[textCell textfield] setTag:2];
    }
  }
 
  // set default checkmark
  if ([indexPath row] == ([indexPath section] == 0 ? _selection_color : _selection_resolution))
    [cell setAccessoryType:UITableViewCellAccessoryCheckmark];
  else
    [cell setAccessoryType:UITableViewCellAccessoryNone];
 
  return cell;
}
 
#pragma mark - Table view delegate
 
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
  // custom widht/height cells are not selectable
  if ([indexPath section] == 1 && [indexPath row] >= [_resolution_modes count])
    return;
 
  // has selection change?
  int cur_selection = ([indexPath section] == 0 ? _selection_color : _selection_resolution);
  if ([indexPath row] != cur_selection)
  {
    [tableView deselectRowAtIndexPath:indexPath animated:NO];
 
    NSIndexPath *oldIndexPath = [NSIndexPath indexPathForRow:cur_selection
                                                   inSection:[indexPath section]];
 
    // clear old checkmark
    UITableViewCell *old_sel_cell = [tableView cellForRowAtIndexPath:oldIndexPath];
    old_sel_cell.accessoryType = UITableViewCellAccessoryNone;
 
    // set new checkmark
    UITableViewCell *new_sel_cell = [tableView cellForRowAtIndexPath:indexPath];
    new_sel_cell.accessoryType = UITableViewCellAccessoryCheckmark;
 
    if ([indexPath section] == 0)
    {
      // get value from color dictionary
      int sel_value =
          [[_color_options valueForKey:[_color_options keyAtIndex:[indexPath row]]] intValue];
 
      // update selection index and params value
      [_params setInt:sel_value forKeyPath:[self keyPathForKey:@"colors"]];
      _selection_color = [indexPath row];
    }
    else
    {
      // update selection index and params value
      int width, height;
      TSXScreenOptions mode;
      ScanScreenResolution([_resolution_modes objectAtIndex:[indexPath row]], &width, &height,
                           &mode);
      [_params setInt:mode forKeyPath:[self keyPathForKey:@"screen_resolution_type"]];
      if (mode != TSXScreenOptionCustom)
      {
        [_params setInt:width forKeyPath:[self keyPathForKey:@"width"]];
        [_params setInt:height forKeyPath:[self keyPathForKey:@"height"]];
      }
      _selection_resolution = [indexPath row];
 
      // refresh width/height edit fields if custom selection changed
      NSArray *indexPaths = [NSArray
          arrayWithObjects:[NSIndexPath indexPathForRow:[_resolution_modes count]
                                              inSection:1],
                           [NSIndexPath indexPathForRow:([_resolution_modes count] + 1)
                                              inSection:1],
                           nil];
      [[self tableView] reloadRowsAtIndexPaths:indexPaths
                              withRowAnimation:UITableViewRowAnimationNone];
    }
  }
}
 
#pragma mark -
#pragma mark Text Field delegate
 
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
  [textField resignFirstResponder];
  return NO;
}
 
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
 
  switch ([textField tag])
  {
      // update resolution settings (and check for invalid input)
    case 1:
      if ([[textField text] intValue] < 640)
        [textField setText:@"640"];
      [_params setInt:[[textField text] intValue] forKeyPath:[self keyPathForKey:@"width"]];
      break;
 
    case 2:
      if ([[textField text] intValue] < 480)
        [textField setText:@"480"];
      [_params setInt:[[textField text] intValue] forKeyPath:[self keyPathForKey:@"height"]];
      break;
 
    default:
      break;
  }
  return YES;
}
 
@end