1 files changed, 175 insertions, 0 deletions
diff --git a/platform/ios/app/MBXDownloadsTableViewController.m b/platform/ios/app/MBXDownloadsTableViewController.m
new file mode 100644
index 0000000000..db80fdef52
--- /dev/null
+++ b/platform/ios/app/MBXDownloadsTableViewController.m
@@ -0,0 +1,175 @@
+#import "MBXDownloadsTableViewController.h"
+
+#import <Mapbox/Mapbox.h>
+
+static NSString * const MBXDownloadContextNameKey = @"Name";
+
+static NSString * const MBXDownloadsTableViewInactiveCellReuseIdentifier = @"Inactive";
+static NSString * const MBXDownloadsTableViewActiveCellReuseIdentifier = @"Active";
+
+@implementation MGLDownloadable (MBXAdditions)
+
+- (NSString *)name {
+    NSDictionary *userInfo = [NSKeyedUnarchiver unarchiveObjectWithData:self.context];
+    NSAssert([userInfo isKindOfClass:[NSDictionary class]], @"Context of downloadable isn’t a dictionary.");
+    NSString *name = userInfo[MBXDownloadContextNameKey];
+    NSAssert([name isKindOfClass:[NSString class]], @"Name of downloadable isn’t a string.");
+    return name;
+}
+
+@end
+
+@interface MBXDownloadsTableViewController () <MGLDownloadableDelegate>
+
+@property (nonatomic, strong) NS_MUTABLE_ARRAY_OF(MGLDownloadable *) *downloadables;
+
+@end
+
+@implementation MBXDownloadsTableViewController {
+    NSUInteger _untitledRegionCount;
+}
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+    
+    __weak MBXDownloadsTableViewController *weakSelf = self;
+    [[MGLDownloadController sharedController] requestDownloadablesWithCompletionHandler:^(NS_ARRAY_OF(MGLDownloadable *) *downloadables, NSError *error) {
+        MBXDownloadsTableViewController *strongSelf = weakSelf;
+        strongSelf.downloadables = downloadables.mutableCopy;
+        [strongSelf.tableView reloadData];
+        
+        for (MGLDownloadable *downloadable in strongSelf.downloadables) {
+            downloadable.delegate = strongSelf;
+            [downloadable requestProgress];
+        }
+        
+        if (error) {
+            UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Can’t Find Downloads" message:@"Mapbox GL was unable to find the existing downloads." 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 Download" message:@"Choose a name for the download:" 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];
+        }
+        
+        MGLTilePyramidDownloadRegion *region = [[MGLTilePyramidDownloadRegion alloc] initWithStyleURL:mapView.styleURL bounds:mapView.visibleCoordinateBounds fromZoomLevel:mapView.zoomLevel toZoomLevel:mapView.maximumZoomLevel];
+        NSData *context = [NSKeyedArchiver archivedDataWithRootObject:@{
+            MBXDownloadContextNameKey: name,
+        }];
+        
+        __weak MBXDownloadsTableViewController *weakSelf = self;
+        [[MGLDownloadController sharedController] addDownloadableForRegion:region withContext:context completionHandler:^(MGLDownloadable *downloadable, NSError *error) {
+            MBXDownloadsTableViewController *strongSelf = weakSelf;
+            if (error) {
+                NSString *message = [NSString stringWithFormat:@"Mapbox GL was unable to add the download “%@”.", name];
+                UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Can’t Add Download" message:message preferredStyle:UIAlertControllerStyleAlert];
+                [alertController addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:nil]];
+                [self presentViewController:alertController animated:YES completion:nil];
+            } else {
+                downloadable.delegate = strongSelf;
+                [downloadable resume];
+                
+                NSIndexPath *indexPath = [NSIndexPath indexPathForRow:strongSelf.downloadables.count inSection:0];
+                [strongSelf.downloadables addObject:downloadable];
+                [strongSelf.tableView insertRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
+            }
+        }];
+    }];
+    [alertController addAction:downloadAction];
+    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.downloadables.count;
+}
+
+- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
+    MGLDownloadable *downloadable = self.downloadables[indexPath.row];
+    
+    NSString *reuseIdentifier = downloadable.state == MGLDownloadableStateActive ? MBXDownloadsTableViewActiveCellReuseIdentifier : MBXDownloadsTableViewInactiveCellReuseIdentifier;
+    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reuseIdentifier forIndexPath:indexPath];
+    cell.textLabel.text = downloadable.name;
+    MGLDownloadableProgress progress = downloadable.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 (downloadable.state) {
+        case MGLDownloadableStateInactive:
+        case MGLDownloadableStateComplete:
+            statusString = [NSString stringWithFormat:@"%@ of %@ resources (%@)",
+                            completedString, expectedString, byteCountString];
+            break;
+            
+        case MGLDownloadableStateActive:
+            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;
+    }
+    cell.detailTextLabel.text = statusString;
+    
+    return cell;
+}
+
+- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
+    if (editingStyle == UITableViewCellEditingStyleDelete) {
+        MGLDownloadable *downloadable = self.downloadables[indexPath.row];
+        __weak MBXDownloadsTableViewController *weakSelf = self;
+        [[MGLDownloadController sharedController] removeDownloadable:downloadable withCompletionHandler:^(NSError *error) {
+            MBXDownloadsTableViewController *strongSelf = weakSelf;
+            [strongSelf.downloadables removeObjectAtIndex:indexPath.row];
+            [strongSelf.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
+        }];
+    }
+}
+
+#pragma mark - Downloadable delegate
+
+- (void)downloadable:(MGLDownloadable *)downloadable progressDidChange:(MGLDownloadableProgress)progress {
+    NSUInteger index = [self.downloadables indexOfObject:downloadable];
+    if (index == NSNotFound) {
+        return;
+    }
+    
+    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:index inSection:0];
+    [self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationNone];
+}
+
+- (void)downloadable:(MGLDownloadable *)downloadable didReceiveError:(NSError *)error {
+    NSLog(@"Downloadable “%@” received error: %@", downloadable.name, error.localizedFailureReason);
+}
+
+- (void)downloadable:(MGLDownloadable *)downloadable didReceiveMaximumAllowedMapboxTiles:(uint64_t)maximumCount {
+    NSLog(@"Downloadable “%@” reached limit of %llu tiles.", downloadable.name, maximumCount);
+}
+
+@end