Remove unnecessary styling for some controls in ARDMainView.m for ios.

webrtc/examples/objc/AppRTCMobile/ios/ARDMainView.m

 /*
  *  Copyright 2015 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #import "ARDMainView.h"
 
 #import "UIImage+ARDUtilities.h"
 
-// TODO(tkchin): retrieve status bar height dynamically.
-static CGFloat const kStatusBarHeight = 20;
-
-static CGFloat const kRoomTextButtonSize = 40;
 static CGFloat const kRoomTextFieldHeight = 40;
 static CGFloat const kRoomTextFieldMargin = 8;
 static CGFloat const kCallControlMargin = 8;
 
 // Helper view that contains a text field and a clear button.
 @interface ARDRoomTextField : UIView <UITextFieldDelegate>
 @property(nonatomic, readonly) NSString *roomText;
 @end
 
 @implementation ARDRoomTextField {
   UITextField *_roomText;
-  UIButton *_clearButton;
 }
 
 - (instancetype)initWithFrame:(CGRect)frame {
   if (self = [super initWithFrame:frame]) {
     _roomText = [[UITextField alloc] initWithFrame:CGRectZero];
     _roomText.borderStyle = UITextBorderStyleNone;
     _roomText.font = [UIFont fontWithName:@"Roboto" size:12];
     _roomText.placeholder = @"Room name";
     _roomText.autocorrectionType = UITextAutocorrectionTypeNo;
     _roomText.autocapitalizationType = UITextAutocapitalizationTypeNone;
+    _roomText.clearButtonMode = UITextFieldViewModeAlways;
     _roomText.delegate = self;
-    [_roomText addTarget:self
-                  action:@selector(textFieldDidChange:)
-        forControlEvents:UIControlEventEditingChanged];
     [self addSubview:_roomText];
 
-    _clearButton = [UIButton buttonWithType:UIButtonTypeCustom];
-    UIImage *image = [UIImage imageForName:@"ic_clear_black_24dp.png"
-                                     color:[UIColor colorWithWhite:0 alpha:.4]];
-
-    [_clearButton setImage:image forState:UIControlStateNormal];
-    [_clearButton addTarget:self
-                      action:@selector(onClear:)
-            forControlEvents:UIControlEventTouchUpInside];
-    _clearButton.hidden = YES;
-    [self addSubview:_clearButton];
-
     // Give rounded corners and a light gray border.
     self.layer.borderWidth = 1;
     self.layer.borderColor = [[UIColor lightGrayColor] CGColor];
     self.layer.cornerRadius = 2;
   }
   return self;
 }
 
 - (void)layoutSubviews {
-  CGRect bounds = self.bounds;
-  _clearButton.frame = CGRectMake(CGRectGetMaxX(bounds) - kRoomTextButtonSize,
-                                  CGRectGetMinY(bounds),
-                                  kRoomTextButtonSize,
-                                  kRoomTextButtonSize);
-  _roomText.frame = CGRectMake(
-      CGRectGetMinX(bounds) + kRoomTextFieldMargin,
-      CGRectGetMinY(bounds),
-      CGRectGetMinX(_clearButton.frame) - CGRectGetMinX(bounds) -
-          kRoomTextFieldMargin,
-      kRoomTextFieldHeight);
+  _roomText.frame =
+      CGRectMake(kRoomTextFieldMargin, 0, CGRectGetWidth(self.bounds) - kRoomTextFieldMargin,
+                 kRoomTextFieldHeight);
 }
 
 - (CGSize)sizeThatFits:(CGSize)size {
   size.height = kRoomTextFieldHeight;
   return size;
 }
 
 - (NSString *)roomText {
   return _roomText.text;
 }
 
 #pragma mark - UITextFieldDelegate
 
 - (BOOL)textFieldShouldReturn:(UITextField *)textField {
   // There is no other control that can take focus, so manually resign focus
   // when return (Join) is pressed to trigger |textFieldDidEndEditing|.
   [textField resignFirstResponder];
   return YES;
 }
 
-#pragma mark - Private
-
-- (void)textFieldDidChange:(id)sender {
-  [self updateClearButton];
-}
-
-- (void)onClear:(id)sender {
-  _roomText.text = @"";
-  [self updateClearButton];
-  [_roomText resignFirstResponder];
-}
-
-- (void)updateClearButton {
-  _clearButton.hidden = _roomText.text.length == 0;
-}
-
 @end
 
 @implementation ARDMainView {
   ARDRoomTextField *_roomText;
   UILabel *_callOptionsLabel;
   UISwitch *_audioOnlySwitch;
   UILabel *_audioOnlyLabel;
   UISwitch *_aecdumpSwitch;
   UILabel *_aecdumpLabel;
   UISwitch *_levelControlSwitch;
@@ skipping 74 matching lines @@
     [self addSubview:_useManualAudioSwitch];
 
     _useManualAudioLabel = [[UILabel alloc] initWithFrame:CGRectZero];
     _useManualAudioLabel.text = @"Use manual audio config";
     _useManualAudioLabel.font = controlFont;
     _useManualAudioLabel.textColor = controlFontColor;
     [_useManualAudioLabel sizeToFit];
     [self addSubview:_useManualAudioLabel];
 
     _startCallButton = [UIButton buttonWithType:UIButtonTypeSystem];
-    _startCallButton.backgroundColor = [UIColor blueColor];
-    _startCallButton.layer.cornerRadius = 10;
-    _startCallButton.clipsToBounds = YES;
-    _startCallButton.contentEdgeInsets = UIEdgeInsetsMake(5, 10, 5, 10);
     [_startCallButton setTitle:@"Start call"
                       forState:UIControlStateNormal];
     _startCallButton.titleLabel.font = controlFont;
-    [_startCallButton setTitleColor:[UIColor whiteColor]
-                           forState:UIControlStateNormal];
-    [_startCallButton setTitleColor:[UIColor lightGrayColor]
-                           forState:UIControlStateSelected];
     [_startCallButton sizeToFit];
     [_startCallButton addTarget:self
                          action:@selector(onStartCall:)
                forControlEvents:UIControlEventTouchUpInside];
     [self addSubview:_startCallButton];
 
     // Used to test what happens to sounds when calls are in progress.
     _audioLoopButton = [UIButton buttonWithType:UIButtonTypeSystem];
-    _audioLoopButton.layer.cornerRadius = 10;
-    _audioLoopButton.clipsToBounds = YES;
-    _audioLoopButton.contentEdgeInsets = UIEdgeInsetsMake(5, 10, 5, 10);
     _audioLoopButton.titleLabel.font = controlFont;
-    [_audioLoopButton setTitleColor:[UIColor whiteColor]
-                           forState:UIControlStateNormal];
-    [_audioLoopButton setTitleColor:[UIColor lightGrayColor]
-                           forState:UIControlStateSelected];
     [self updateAudioLoopButton];
     [_audioLoopButton addTarget:self
                          action:@selector(onToggleAudioLoop:)
                forControlEvents:UIControlEventTouchUpInside];
     [self addSubview:_audioLoopButton];
 
     self.backgroundColor = [UIColor whiteColor];
   }
   return self;
 }
@@ skipping 94 matching lines @@
   _startCallButton.frame = CGRectMake(kCallControlMargin,
                                       startCallTop,
                                       _startCallButton.frame.size.width,
                                       _startCallButton.frame.size.height);
 }
 
 #pragma mark - Private
 
 - (void)updateAudioLoopButton {
   if (_isAudioLoopPlaying) {
-    _audioLoopButton.backgroundColor = [UIColor redColor];
     [_audioLoopButton setTitle:@"Stop sound"
                       forState:UIControlStateNormal];
     [_audioLoopButton sizeToFit];
   } else {
-    _audioLoopButton.backgroundColor = [UIColor greenColor];
     [_audioLoopButton setTitle:@"Play sound"
                       forState:UIControlStateNormal];
     [_audioLoopButton sizeToFit];
   }
 }
 
 - (void)onToggleAudioLoop:(id)sender {
   [_delegate mainViewDidToggleAudioLoop:self];
 }
 
 - (void)onStartCall:(id)sender {
   NSString *room = _roomText.roomText;
   // If this is a loopback call, allow a generated room name.
   if (!room.length && _loopbackSwitch.isOn) {
     room = [[NSUUID UUID] UUIDString];
   }
   room = [room stringByReplacingOccurrencesOfString:@"-" withString:@""];
   [_delegate mainView:self
                 didInputRoom:room
                   isLoopback:_loopbackSwitch.isOn
                  isAudioOnly:_audioOnlySwitch.isOn
            shouldMakeAecDump:_aecdumpSwitch.isOn
        shouldUseLevelControl:_levelControlSwitch.isOn
               useManualAudio:_useManualAudioSwitch.isOn];
 }
 
 @end