flipper/iOS/FlipperKit/FlipperDiagnosticsViewController.m

/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

#import <Foundation/Foundation.h>

#ifdef FB_SONARKIT_ENABLED
#if !TARGET_OS_OSX

#import "FlipperClient.h"
#import "FlipperDiagnosticsViewController.h"

#define STATE_VIEW_HEIGHT 300

static NSString* const kSKCellIdentifier =
    @"FlipperDiagnosticStateTableStableCellIdentifier";

@implementation StateTableDataSource
- (instancetype)initWithElements:(NSArray<NSDictionary*>*)elements {
  self = [super init];
  if (self) {
    _elements = elements;
  }
  return self;
}

- (nonnull UITableViewCell*)tableView:(nonnull UITableView*)tableView
                cellForRowAtIndexPath:(nonnull NSIndexPath*)indexPath {
  NSInteger row = indexPath.row;

  UITableViewCell* cell =
      [tableView dequeueReusableCellWithIdentifier:kSKCellIdentifier
                                      forIndexPath:indexPath];
  cell.textLabel.font = [UIFont fontWithName:@"Arial" size:10];
  cell.textLabel.text = [self.elements[row][@"state"]
      stringByAppendingString:self.elements[row][@"name"]];

  return cell;
}

- (NSInteger)tableView:(nonnull UITableView*)tableView
    numberOfRowsInSection:(NSInteger)section {
  return [self.elements count];
}

@end

@implementation FlipperDiagnosticsViewController

- (void)viewDidLoad {
  [super viewDidLoad];

  self.view.backgroundColor = [UIColor whiteColor];

  self.stateTable = [[UITableView alloc]
      initWithFrame:CGRectMake(
                        0, 0, self.view.bounds.size.width, STATE_VIEW_HEIGHT)];

  self.scrollView = [[UIScrollView alloc]
      initWithFrame:CGRectMake(
                        0,
                        STATE_VIEW_HEIGHT,
                        self.view.frame.size.width,
                        self.view.frame.size.height - 100 - STATE_VIEW_HEIGHT)];

  self.logLabel =
      [[UILabel alloc] initWithFrame:CGRectMake(
                                         0,
                                         0,
                                         self.view.frame.size.width,
                                         self.scrollView.frame.size.height)];
  self.logLabel.numberOfLines = 0;
  self.logLabel.font = [UIFont systemFontOfSize:10.0f];

  [self.scrollView addSubview:self.logLabel];

  [self.stateTable registerClass:[UITableViewCell class]
          forCellReuseIdentifier:kSKCellIdentifier];
  self.stateTable.rowHeight = 14;
  self.tableDataSource = [[StateTableDataSource alloc]
      initWithElements:[[FlipperClient sharedClient] getStateElements]];
  self.stateTable.dataSource = self.tableDataSource;

  [self updateLogView];

  [self.view addSubview:self.stateTable];
  [self.view addSubview:self.scrollView];
}

- (void)onUpdate {
  FlipperDiagnosticsViewController __weak* weakSelf = self;
  dispatch_async(dispatch_get_main_queue(), ^{
    [weakSelf updateStateTable];
    [weakSelf updateLogView];
  });
}

- (void)updateStateTable {
  self.tableDataSource.elements =
      [[FlipperClient sharedClient] getStateElements];
  [self.stateTable reloadData];
}

- (void)updateLogView {
  NSString* state = [[FlipperClient sharedClient] getState];
  self.logLabel.text = state;
  [self.logLabel sizeToFit];
  self.scrollView.contentSize = self.logLabel.frame.size;

  CGFloat y = 0;
  if (self.scrollView.contentSize.height > self.scrollView.bounds.size.height) {
    y = self.scrollView.contentSize.height - self.scrollView.bounds.size.height;
  }
  CGPoint bottomOffset = CGPointMake(0, y);
  [self.scrollView setContentOffset:bottomOffset animated:YES];
}

- (void)viewWillAppear:(BOOL)animated {
  [super viewWillAppear:animated];
  id<FlipperStateUpdateListener> weakSelf = self;
  [[FlipperClient sharedClient] subscribeForUpdates:weakSelf];
}

- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
  return UIInterfaceOrientationMaskPortrait;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
  return UIInterfaceOrientationPortrait;
}

@end

#endif
#endif