featherless 38595c6509
[NavigationBar] Implement a semantic color scheme color themer API. (#3267)
Also added unit tests and updated a couple examples to make use of the new themer APIs.

Pivotal story: https://www.pivotaltracker.com/story/show/156169509

[Delivers #156169509]

![simulator screen shot - iphone x - 2018-04-06 at 11 36 09](https://user-images.githubusercontent.com/45670/38430240-b810f8b4-398e-11e8-9583-e871a5e5542d.png)
2018-04-09 11:27:53 -04:00

87 lines
2.9 KiB
Objective-C

/*
Copyright 2016-present the Material Components for iOS authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#import <UIKit/UIKit.h>
#import "MaterialNavigationBar.h"
#import "MDCNavigationBarColorThemer.h"
#import "supplemental/NavigationBarTypicalUseExampleSupplemental.h"
@interface NavigationBarTypicalUseExample ()
@end
@implementation NavigationBarTypicalUseExample
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
self.title = @"Navigation Bar";
self.navBar = [[MDCNavigationBar alloc] initWithFrame:CGRectZero];
[self.navBar observeNavigationItem:self.navigationItem];
MDCNavigationBarTextColorAccessibilityMutator *mutator =
[[MDCNavigationBarTextColorAccessibilityMutator alloc] init];
[mutator mutate:self.navBar];
id<MDCColorScheming> colorScheme = [[MDCSemanticColorScheme alloc] init];
[MDCNavigationBarColorThemer applySemanticColorScheme:colorScheme toNavigationBar:self.navBar];
[self.view addSubview:self.navBar];
self.navBar.translatesAutoresizingMaskIntoConstraints = NO;
#if defined(__IPHONE_11_0) && (__IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_11_0)
if (@available(iOS 11.0, *)) {
[self.view.safeAreaLayoutGuide.topAnchor constraintEqualToAnchor:self.navBar.topAnchor].active = YES;
} else {
#endif
[NSLayoutConstraint constraintWithItem:self.topLayoutGuide
attribute:NSLayoutAttributeBottom
relatedBy:NSLayoutRelationEqual
toItem:self.navBar
attribute:NSLayoutAttributeTop
multiplier:1.0
constant:0].active = YES;
#if defined(__IPHONE_11_0) && (__IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_11_0)
}
#endif
NSDictionary *viewsBindings = NSDictionaryOfVariableBindings(_navBar);
[NSLayoutConstraint
activateConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[_navBar]|"
options:0
metrics:nil
views:viewsBindings]];
[self setupExampleViews];
}
- (BOOL)prefersStatusBarHidden {
return YES;
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:YES animated:animated];
}
@end