[ios] Added download manager to iosapp

5 files changed, 310 insertions, 32 deletions

diff --git a/platform/ios/app/MBXDownloadsTableViewController.h b/platform/ios/app/MBXDownloadsTableViewController.h
new file mode 100644
index 0000000000..f0b5b8a68b
--- /dev/null
+++ b/platform/ios/app/MBXDownloadsTableViewController.h
@@ -0,0 +1,9 @@
+#import <UIKit/UIKit.h>
+
+@class MGLMapView;
+
+@interface MBXDownloadsTableViewController : UITableViewController
+
+@property (nonatomic, weak) MGLMapView *mapView;
+
+@end
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
diff --git a/platform/ios/app/MBXViewController.mm b/platform/ios/app/MBXViewController.mm
index 548a5e7100..ba35feed62 100644
--- a/platform/ios/app/MBXViewController.mm
+++ b/platform/ios/app/MBXViewController.mm
@@ -1,5 +1,6 @@
 #import "MBXViewController.h"
 #import "MBXCustomCalloutView.h"
+#import "MBXDownloadsTableViewController.h"
 
 #import <Mapbox/Mapbox.h>
 #import "../../../include/mbgl/util/default_styles.hpp"
@@ -100,6 +101,13 @@ static const CLLocationCoordinate2D WorldTourDestinations[] = {
     return UIInterfaceOrientationMaskAll;
 }
 
+- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(__unused id)sender {
+    if ([segue.identifier isEqualToString:@"ShowDownloads"]) {
+        MBXDownloadsTableViewController *controller = [segue destinationViewController];
+        controller.mapView = self.mapView;
+    }
+}
+
 #pragma mark - Actions
 
 - (IBAction)showSettings:(__unused id)sender
@@ -109,33 +117,34 @@ static const CLLocationCoordinate2D WorldTourDestinations[] = {
                                                        delegate:self
                                               cancelButtonTitle:@"Cancel"
                                          destructiveButtonTitle:nil
-                                              otherButtonTitles:@"Reset Position",
-                                                                ((debugMask & MGLMapDebugTileBoundariesMask)
-                                                                 ? @"Hide Tile Boundaries"
-                                                                 : @"Show Tile Boundaries"),
-                                                                ((debugMask & MGLMapDebugTileInfoMask)
-                                                                 ? @"Hide Tile Info"
-                                                                 : @"Show Tile Info"),
-                                                                ((debugMask & MGLMapDebugTimestampsMask)
-                                                                 ? @"Hide Tile Timestamps"
-                                                                 : @"Show Tile Timestamps"),
-                                                                ((debugMask & MGLMapDebugCollisionBoxesMask)
-                                                                 ? @"Hide Collision Boxes"
-                                                                 : @"Show Collision Boxes"),
-                                                                @"Empty Memory",
-                                                                @"Add 100 Points",
-                                                                @"Add 1,000 Points",
-                                                                @"Add 10,000 Points",
-                                                                @"Add Test Shapes",
-                                                                @"Start World Tour",
-                                                                @"Add Custom Callout Point",
-                                                                @"Remove Annotations",
-                                                                (_isShowingCustomStyleLayer
-                                                                 ? @"Hide Custom Style Layer"
-                                                                 : @"Show Custom Style Layer"),
-                                                                @"Print Telemetry Logfile",
-                                                                @"Delete Telemetry Logfile",
-                                                                nil];
+                                              otherButtonTitles:
+                            @"Reset Position",
+                            ((debugMask & MGLMapDebugTileBoundariesMask)
+                             ? @"Hide Tile Boundaries"
+                             : @"Show Tile Boundaries"),
+                            ((debugMask & MGLMapDebugTileInfoMask)
+                             ? @"Hide Tile Info"
+                             : @"Show Tile Info"),
+                            ((debugMask & MGLMapDebugTimestampsMask)
+                             ? @"Hide Tile Timestamps"
+                             : @"Show Tile Timestamps"),
+                            ((debugMask & MGLMapDebugCollisionBoxesMask)
+                             ? @"Hide Collision Boxes"
+                             : @"Show Collision Boxes"),
+                            @"Empty Memory",
+                            @"Add 100 Points",
+                            @"Add 1,000 Points",
+                            @"Add 10,000 Points",
+                            @"Add Test Shapes",
+                            @"Start World Tour",
+                            @"Add Custom Callout Point",
+                            @"Remove Annotations",
+                            (_isShowingCustomStyleLayer
+                             ? @"Hide Custom Style Layer"
+                             : @"Show Custom Style Layer"),
+                            @"Print Telemetry Logfile",
+                            @"Delete Telemetry Logfile",
+                            nil];
 
     [sheet showFromBarButtonItem:self.navigationItem.leftBarButtonItem animated:YES];
 }
diff --git a/platform/ios/app/Storyboard.storyboard b/platform/ios/app/Storyboard.storyboard
index 68ee45b8d2..7e1eded47e 100644
--- a/platform/ios/app/Storyboard.storyboard
+++ b/platform/ios/app/Storyboard.storyboard
@@ -3,6 +3,7 @@
     <dependencies>
         <deployment identifier="iOS"/>
         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10083"/>
+        <capability name="Navigation items with more than one left or right bar item" minToolsVersion="7.0"/>
     </dependencies>
     <scenes>
         <!--Map View Controller-->
@@ -51,11 +52,18 @@
                                 <action selector="cycleStyles:" destination="WaX-pd-UZQ" eventType="touchUpInside" id="PnY-mb-J6m"/>
                             </connections>
                         </button>
-                        <barButtonItem key="rightBarButtonItem" image="TrackingLocationOffMask.png" id="CQ1-GP-M6x">
-                            <connections>
-                                <action selector="locateUser:" destination="WaX-pd-UZQ" id="XgF-DB-z3f"/>
-                            </connections>
-                        </barButtonItem>
+                        <rightBarButtonItems>
+                            <barButtonItem image="TrackingLocationOffMask.png" id="CQ1-GP-M6x">
+                                <connections>
+                                    <action selector="locateUser:" destination="WaX-pd-UZQ" id="XgF-DB-z3f"/>
+                                </connections>
+                            </barButtonItem>
+                            <barButtonItem systemItem="organize" id="5IK-vz-jKQ">
+                                <connections>
+                                    <segue destination="7q0-lI-zqb" kind="show" identifier="ShowDownloads" id="xjx-0t-0LD"/>
+                                </connections>
+                            </barButtonItem>
+                        </rightBarButtonItems>
                     </navigationItem>
                     <connections>
                         <outlet property="mapView" destination="kNe-zV-9ha" id="VNR-WO-1q4"/>
@@ -70,6 +78,81 @@
             </objects>
             <point key="canvasLocation" x="1366" y="350"/>
         </scene>
+        <!--Downloads-->
+        <scene sceneID="xIg-PA-7r3">
+            <objects>
+                <tableViewController id="7q0-lI-zqb" customClass="MBXDownloadsTableViewController" sceneMemberID="viewController">
+                    <tableView key="view" clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="44" sectionHeaderHeight="28" sectionFooterHeight="28" id="eeN-6b-zqe">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                        <prototypes>
+                            <tableViewCell clipsSubviews="YES" contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" reuseIdentifier="Inactive" editingAccessoryType="detailDisclosureButton" textLabel="JtH-Ce-MI5" detailTextLabel="tTJ-jv-U9v" style="IBUITableViewCellStyleSubtitle" id="fGu-Ys-Eh1">
+                                <rect key="frame" x="0.0" y="92" width="600" height="44"/>
+                                <autoresizingMask key="autoresizingMask"/>
+                                <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="fGu-Ys-Eh1" id="sUf-bc-8xG">
+                                    <rect key="frame" x="0.0" y="0.0" width="600" height="43.5"/>
+                                    <autoresizingMask key="autoresizingMask"/>
+                                    <subviews>
+                                        <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" text="My Inactive Download" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="JtH-Ce-MI5">
+                                            <rect key="frame" x="15" y="6" width="159" height="19.5"/>
+                                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                            <fontDescription key="fontDescription" type="system" pointSize="16"/>
+                                            <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                                            <nil key="highlightedColor"/>
+                                        </label>
+                                        <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" text="456 resources (789 MB)" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="tTJ-jv-U9v">
+                                            <rect key="frame" x="15" y="25.5" width="128" height="13.5"/>
+                                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                            <fontDescription key="fontDescription" type="system" pointSize="11"/>
+                                            <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                                            <nil key="highlightedColor"/>
+                                        </label>
+                                    </subviews>
+                                </tableViewCellContentView>
+                            </tableViewCell>
+                            <tableViewCell clipsSubviews="YES" contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" reuseIdentifier="Active" editingAccessoryType="detailDisclosureButton" textLabel="9ZK-gS-wJ4" detailTextLabel="0xK-p8-Mmh" style="IBUITableViewCellStyleSubtitle" id="mKB-tz-Zfl">
+                                <rect key="frame" x="0.0" y="136" width="600" height="44"/>
+                                <autoresizingMask key="autoresizingMask"/>
+                                <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="mKB-tz-Zfl" id="nS3-aU-nBr">
+                                    <rect key="frame" x="0.0" y="0.0" width="600" height="43.5"/>
+                                    <autoresizingMask key="autoresizingMask"/>
+                                    <subviews>
+                                        <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" text="My Active Download" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="9ZK-gS-wJ4">
+                                            <rect key="frame" x="15" y="6" width="147.5" height="19.5"/>
+                                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                            <fontDescription key="fontDescription" type="system" pointSize="16"/>
+                                            <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                                            <nil key="highlightedColor"/>
+                                        </label>
+                                        <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" text="Downloading 123 of 456 resources… (789 MB downloaded)" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="0xK-p8-Mmh">
+                                            <rect key="frame" x="15" y="25.5" width="310.5" height="13.5"/>
+                                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                            <fontDescription key="fontDescription" type="system" pointSize="11"/>
+                                            <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                                            <nil key="highlightedColor"/>
+                                        </label>
+                                    </subviews>
+                                </tableViewCellContentView>
+                            </tableViewCell>
+                        </prototypes>
+                        <connections>
+                            <outlet property="dataSource" destination="7q0-lI-zqb" id="oe8-d5-Rjo"/>
+                            <outlet property="delegate" destination="7q0-lI-zqb" id="D5X-oy-DSc"/>
+                        </connections>
+                    </tableView>
+                    <navigationItem key="navigationItem" title="Downloads" id="UcK-PK-eQA">
+                        <barButtonItem key="rightBarButtonItem" systemItem="add" id="gCV-hl-Mzc">
+                            <connections>
+                                <action selector="addCurrentRegion:" destination="7q0-lI-zqb" id="G2O-3V-aEA"/>
+                            </connections>
+                        </barButtonItem>
+                    </navigationItem>
+                </tableViewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="Dga-Vh-IxZ" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="2075" y="350"/>
+        </scene>
         <!--Navigation Controller-->
         <scene sceneID="LFg-oU-zTK">
             <objects>
diff --git a/platform/ios/app/mapboxgl-app.gypi b/platform/ios/app/mapboxgl-app.gypi
index 21941e309d..fd10a685d9 100644
--- a/platform/ios/app/mapboxgl-app.gypi
+++ b/platform/ios/app/mapboxgl-app.gypi
@@ -29,6 +29,8 @@
         'MBXAppDelegate.m',
         'MBXCustomCalloutView.h',
         'MBXCustomCalloutView.m',
+        'MBXDownloadsTableViewController.h',
+        'MBXDownloadsTableViewController.m',
         'MBXViewController.h',
         'MBXViewController.mm',
       ],