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#import "MBXOfflinePacksTableViewController.h"
#import <Mapbox/Mapbox.h>
static NSString * const MBXOfflinePackContextNameKey = @"Name";
static NSString * const MBXOfflinePacksTableViewInactiveCellReuseIdentifier = @"Inactive";
static NSString * const MBXOfflinePacksTableViewActiveCellReuseIdentifier = @"Active";
@implementation MGLOfflinePack (MBXAdditions)
- (NSString *)name {
NSDictionary *userInfo = [NSKeyedUnarchiver unarchiveObjectWithData:self.context];
NSAssert([userInfo isKindOfClass:[NSDictionary class]], @"Context of offline pack isn’t a dictionary.");
NSString *name = userInfo[MBXOfflinePackContextNameKey];
NSAssert([name isKindOfClass:[NSString class]], @"Name of offline pack isn’t a string.");
return name;
}
@end
@implementation MGLTilePyramidOfflineRegion (MBXAdditions)
- (void)applyToMapView:(MGLMapView *)mapView {
mapView.styleURL = self.styleURL;
[mapView setVisibleCoordinateBounds:self.bounds];
}
@end
@interface MBXOfflinePacksTableViewController () <MGLOfflinePackDelegate>
@property (nonatomic, strong) NS_MUTABLE_ARRAY_OF(MGLOfflinePack *) *offlinePacks;
@end
@implementation MBXOfflinePacksTableViewController {
NSUInteger _untitledRegionCount;
}
- (void)viewDidLoad {
[super viewDidLoad];
__weak MBXOfflinePacksTableViewController *weakSelf = self;
[[MGLOfflineStorage sharedOfflineStorage] getPacksWithCompletionHandler:^(NS_ARRAY_OF(MGLOfflinePack *) *packs, NSError *error) {
MBXOfflinePacksTableViewController *strongSelf = weakSelf;
strongSelf.offlinePacks = packs.mutableCopy;
[strongSelf.tableView reloadData];
for (MGLOfflinePack *pack in strongSelf.offlinePacks) {
pack.delegate = strongSelf;
[pack requestProgress];
}
if (error) {
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Can’t Find Offline Packs" message:@"Mapbox GL was unable to find the existing offline packs." preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:nil]];
[self presentViewController:alertController animated:YES completion:^{
[strongSelf dismissViewControllerAnimated:YES completion:nil];
}];
}
}];
}
- (IBAction)addCurrentRegion:(id)sender {
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Add Offline Pack" message:@"Choose a name for the pack:" preferredStyle:UIAlertControllerStyleAlert];
[alertController addTextFieldWithConfigurationHandler:nil];
[alertController addAction:[UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:nil]];
UIAlertAction *downloadAction = [UIAlertAction actionWithTitle:@"Download" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
MGLMapView *mapView = self.mapView;
NSAssert(mapView, @"No map view to get the current region from.");
NSString *name = alertController.textFields.firstObject.text;
if (!name.length) {
name = [NSString stringWithFormat:@"Untitled %lu", (unsigned long)++_untitledRegionCount];
}
MGLTilePyramidOfflineRegion *region = [[MGLTilePyramidOfflineRegion alloc] initWithStyleURL:mapView.styleURL bounds:mapView.visibleCoordinateBounds fromZoomLevel:mapView.zoomLevel toZoomLevel:mapView.maximumZoomLevel];
NSData *context = [NSKeyedArchiver archivedDataWithRootObject:@{
MBXOfflinePackContextNameKey: name,
}];
__weak MBXOfflinePacksTableViewController *weakSelf = self;
[[MGLOfflineStorage sharedOfflineStorage] addPackForRegion:region withContext:context completionHandler:^(MGLOfflinePack *pack, NSError *error) {
MBXOfflinePacksTableViewController *strongSelf = weakSelf;
if (error) {
NSString *message = [NSString stringWithFormat:@"Mapbox GL was unable to add the offline pack “%@”.", name];
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Can’t Add Offline Pack" message:message preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:nil]];
[self presentViewController:alertController animated:YES completion:nil];
} else {
pack.delegate = strongSelf;
[pack resume];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:strongSelf.offlinePacks.count inSection:0];
[strongSelf.offlinePacks addObject:pack];
[strongSelf.tableView insertRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
}
}];
}];
[alertController addAction:downloadAction];
if ([alertController respondsToSelector:@selector(setPreferredAction:)]) {
alertController.preferredAction = downloadAction;
}
[self presentViewController:alertController animated:YES completion:nil];
}
#pragma mark - Table view data source
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.offlinePacks.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
MGLOfflinePack *pack = self.offlinePacks[indexPath.row];
NSString *reuseIdentifier = pack.state == MGLOfflinePackStateActive ? MBXOfflinePacksTableViewActiveCellReuseIdentifier : MBXOfflinePacksTableViewInactiveCellReuseIdentifier;
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reuseIdentifier forIndexPath:indexPath];
cell.textLabel.text = pack.name;
MGLOfflinePackProgress progress = pack.progress;
NSString *completedString = [NSNumberFormatter localizedStringFromNumber:@(progress.countOfResourcesCompleted)
numberStyle:NSNumberFormatterDecimalStyle];
NSString *expectedString = [NSNumberFormatter localizedStringFromNumber:@(progress.countOfResourcesExpected)
numberStyle:NSNumberFormatterDecimalStyle];
NSString *byteCountString = [NSByteCountFormatter stringFromByteCount:progress.countOfBytesCompleted
countStyle:NSByteCountFormatterCountStyleFile];
NSString *statusString;
switch (pack.state) {
case MGLOfflinePackStateUnknown:
statusString = @"Calculating progress…";
break;
case MGLOfflinePackStateInactive:
statusString = [NSString stringWithFormat:@"%@ of %@ resources (%@)",
completedString, expectedString, byteCountString];
break;
case MGLOfflinePackStateComplete:
statusString = [NSString stringWithFormat:@"%@ resources (%@)",
completedString, byteCountString];
break;
case MGLOfflinePackStateActive:
if (progress.countOfResourcesExpected) {
completedString = [NSNumberFormatter localizedStringFromNumber:@(progress.countOfResourcesCompleted + 1)
numberStyle:NSNumberFormatterDecimalStyle];
}
if (progress.maximumResourcesExpected > progress.countOfResourcesExpected) {
expectedString = [@"at least " stringByAppendingString:expectedString];
}
statusString = [NSString stringWithFormat:@"Downloading %@ of %@ resources (%@ so far)…",
completedString, expectedString, byteCountString];
break;
case MGLOfflinePackStateInvalid:
NSAssert(NO, @"Invalid offline pack at index path %@", indexPath);
break;
}
cell.detailTextLabel.text = statusString;
return cell;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
MGLOfflinePack *pack = self.offlinePacks[indexPath.row];
[self.offlinePacks removeObjectAtIndex:indexPath.row];
[self.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
[[MGLOfflineStorage sharedOfflineStorage] removePack:pack withCompletionHandler:nil];
}
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView deselectRowAtIndexPath:indexPath animated:YES];
MGLOfflinePack *pack = self.offlinePacks[indexPath.row];
switch (pack.state) {
case MGLOfflinePackStateUnknown:
break;
case MGLOfflinePackStateComplete:
if ([pack.region respondsToSelector:@selector(applyToMapView:)]) {
[pack.region performSelector:@selector(applyToMapView:) withObject:self.mapView];
}
[self performSegueWithIdentifier:@"ReturnToMap" sender:self];
break;
case MGLOfflinePackStateInactive:
[pack resume];
[tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
break;
case MGLOfflinePackStateActive:
[pack suspend];
[tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
break;
case MGLOfflinePackStateInvalid:
NSAssert(NO, @"Invalid offline pack at index path %@", indexPath);
break;
}
}
#pragma mark - Offline pack delegate
- (void)offlinePack:(MGLOfflinePack *)pack progressDidChange:(MGLOfflinePackProgress)progress {
NSUInteger index = [self.offlinePacks indexOfObject:pack];
if (index == NSNotFound) {
return;
}
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:index inSection:0];
[self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationNone];
}
- (void)offlinePack:(MGLOfflinePack *)pack didReceiveError:(NSError *)error {
NSLog(@"Offline pack “%@” received error: %@", pack.name, error.localizedFailureReason);
}
- (void)offlinePack:(MGLOfflinePack *)pack didReceiveMaximumAllowedMapboxTiles:(uint64_t)maximumCount {
NSLog(@"Offline pack “%@” reached limit of %llu tiles.", pack.name, maximumCount);
}
@end
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