/*

 Generic controller to select a single item from a list of options

 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 "EditorSelectionController.h"

#import "ConnectionParams.h"

#import "OrderedDictionary.h"

@interface EditorSelectionController (Private)

- (OrderedDictionary *)selectionForIndex:(int)index;

@end

@implementation EditorSelectionController

- (id)initWithConnectionParams:(ConnectionParams *)params

                       entries:(NSArray *)entries

                    selections:(NSArray *)selections

{

	self = [super initWithStyle:UITableViewStyleGrouped];

	if (self)

	{

		_params = [params retain];

		_entries = [entries retain];

		_selections = [selections retain];

		// allocate and init current selections array

		_cur_selections = [[NSMutableArray alloc] initWithCapacity:[_entries count]];

		for (int i = 0; i < [entries count]; ++i)

		{

			NSString *entry = [entries objectAtIndex:i];

			if ([_params hasValueForKeyPath:entry])

			{

				NSUInteger idx = [(OrderedDictionary *)[selections objectAtIndex:i]

				    indexForValue:[NSNumber numberWithInt:[_params intForKeyPath:entry]]];

				[_cur_selections addObject:[NSNumber numberWithInt:(idx != NSNotFound ? idx : 0)]];

			}

			else

				[_cur_selections addObject:[NSNumber numberWithInt:0]];

		}

	}

	return self;

}

- (void)didReceiveMemoryWarning

{

	// Releases the view if it doesn't have a superview.

	[super didReceiveMemoryWarning];

	// Release any cached data, images, etc that aren't in use.

	[_params autorelease];

	[_entries autorelease];

	[_selections autorelease];

	[_cur_selections autorelease];

}

#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 the number of sections.

	return [_entries count];

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

	// Return the number of rows in the section.

	return [[self selectionForIndex:section] count];

}

- (UITableViewCell *)tableView:(UITableView *)tableView

         cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

	UITableViewCell *cell = [self tableViewCellFromIdentifier:TableCellIdentifierMultiChoice];

	// get selection

	OrderedDictionary *selection = [self selectionForIndex:[indexPath section]];

	// set cell properties

	[[cell textLabel] setText:[selection keyAtIndex:[indexPath row]]];

	// set default checkmark

	if ([indexPath row] == [[_cur_selections objectAtIndex:[indexPath section]] intValue])

		[cell setAccessoryType:UITableViewCellAccessoryCheckmark];

	else

		[cell setAccessoryType:UITableViewCellAccessoryNone];

	return cell;

}

#pragma mark - Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

	// has selection change?

	int cur_selection = [[_cur_selections objectAtIndex:[indexPath section]] intValue];

	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;

		// get value from selection dictionary

		OrderedDictionary *dict = [self selectionForIndex:[indexPath section]];

		int sel_value = [[dict valueForKey:[dict keyAtIndex:[indexPath row]]] intValue];

		// update selection index and params value

		[_cur_selections replaceObjectAtIndex:[indexPath section]

		                           withObject:[NSNumber numberWithInt:[indexPath row]]];

		[_params setInt:sel_value forKeyPath:[_entries objectAtIndex:[indexPath section]]];

	}

}

#pragma mark - Convenience functions

- (OrderedDictionary *)selectionForIndex:(int)index

{

	return (OrderedDictionary *)[_selections objectAtIndex:index];

}

@end