Move talk/examples/* to webrtc/examples.

talk/examples/objc/AppRTCDemo/ios/ARDMainView.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 "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 kAppLabelHeight = 20;
-
-@class ARDRoomTextField;
-@protocol ARDRoomTextFieldDelegate <NSObject>
-- (void)roomTextField:(ARDRoomTextField *)roomTextField
-         didInputRoom:(NSString *)room;
-@end
-
-// Helper view that contains a text field and a clear button.
-@interface ARDRoomTextField : UIView <UITextFieldDelegate>
-@property(nonatomic, weak) id<ARDRoomTextFieldDelegate> delegate;
-@end
-
-@implementation ARDRoomTextField {
-  UITextField *_roomText;
-  UIButton *_clearButton;
-}
-
-@synthesize delegate = _delegate;
-
-- (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.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);
-}
-
-- (CGSize)sizeThatFits:(CGSize)size {
-  size.height = kRoomTextFieldHeight;
-  return size;
-}
-
-#pragma mark - UITextFieldDelegate
-
-- (void)textFieldDidEndEditing:(UITextField *)textField {
-  [_delegate roomTextField:self didInputRoom:textField.text];
-}
-
-- (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
-
-@interface ARDMainView () <ARDRoomTextFieldDelegate>
-@end
-
-@implementation ARDMainView {
-  UILabel *_appLabel;
-  ARDRoomTextField *_roomText;
-}
-
-@synthesize delegate = _delegate;
-
-- (instancetype)initWithFrame:(CGRect)frame {
-  if (self = [super initWithFrame:frame]) {
-    _appLabel = [[UILabel alloc] initWithFrame:CGRectZero];
-    _appLabel.text = @"AppRTCDemo";
-    _appLabel.font = [UIFont fontWithName:@"Roboto" size:34];
-    _appLabel.textColor = [UIColor colorWithWhite:0 alpha:.2];
-    [_appLabel sizeToFit];
-    [self addSubview:_appLabel];
-
-    _roomText = [[ARDRoomTextField alloc] initWithFrame:CGRectZero];
-    _roomText.delegate = self;
-    [self addSubview:_roomText];
-
-    self.backgroundColor = [UIColor whiteColor];
-  }
-  return self;
-}
-
-- (void)layoutSubviews {
-  CGRect bounds = self.bounds;
-  CGFloat roomTextWidth = bounds.size.width - 2 * kRoomTextFieldMargin;
-  CGFloat roomTextHeight = [_roomText sizeThatFits:bounds.size].height;
-  _roomText.frame = CGRectMake(kRoomTextFieldMargin,
-                               kStatusBarHeight + kRoomTextFieldMargin,
-                               roomTextWidth,
-                               roomTextHeight);
-  _appLabel.center = CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds));
-}
-
-#pragma mark - ARDRoomTextFieldDelegate
-
-- (void)roomTextField:(ARDRoomTextField *)roomTextField
-         didInputRoom:(NSString *)room {
-  [_delegate mainView:self didInputRoom:room];
-}
-
-@end