talk/examples/objc/AppRTCDemo/ios/ARDMainViewController.m

/*
 * libjingle
 * Copyright 2015 Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#import "ARDMainViewController.h"

#import "ARDAppClient.h"
#import "ARDMainView.h"
#import "ARDVideoCallViewController.h"

@interface ARDMainViewController () <ARDMainViewDelegate>
@end

@implementation ARDMainViewController

- (void)loadView {
  ARDMainView *mainView = [[ARDMainView alloc] initWithFrame:CGRectZero];
  mainView.delegate = self;
  self.view = mainView;
}

- (void)applicationWillResignActive:(UIApplication *)application {
  // Terminate any calls when we aren't active.
  [self dismissViewControllerAnimated:NO completion:nil];
}

#pragma mark - ARDMainViewDelegate

- (void)mainView:(ARDMainView *)mainView didInputRoom:(NSString *)room {
  if (!room.length) {
    return;
  }
  // Trim whitespaces.
  NSCharacterSet *whitespaceSet = [NSCharacterSet whitespaceCharacterSet];
  NSString *trimmedRoom = [room stringByTrimmingCharactersInSet:whitespaceSet];

  // Check that room name is valid.
  NSError *error = nil;
  NSRegularExpressionOptions options = NSRegularExpressionCaseInsensitive;
  NSRegularExpression *regex =
      [NSRegularExpression regularExpressionWithPattern:@"\\w+"
                                                options:options
                                                  error:&error];
  if (error) {
    [self showAlertWithMessage:error.localizedDescription];
    return;
  }
  NSRange matchRange =
      [regex rangeOfFirstMatchInString:trimmedRoom
                               options:0
                                 range:NSMakeRange(0, trimmedRoom.length)];
  if (matchRange.location == NSNotFound ||
      matchRange.length != trimmedRoom.length) {
    [self showAlertWithMessage:@"Invalid room name."];
    return;
  }

  // Kick off the video call.
  ARDVideoCallViewController *videoCallViewController =
      [[ARDVideoCallViewController alloc] initForRoom:trimmedRoom];
  videoCallViewController.modalTransitionStyle =
      UIModalTransitionStyleCrossDissolve;
  [self presentViewController:videoCallViewController
                     animated:YES
                   completion:nil];
}

#pragma mark - Private

- (void)showAlertWithMessage:(NSString*)message {
  UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:nil
                                                      message:message
                                                     delegate:nil
                                            cancelButtonTitle:@"OK"
                                            otherButtonTitles:nil];
  [alertView show];
}

@end