// 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 "MDCFlatButton.h"

#import "private/MDCButton+Subclassing.h"
#import "MDCButton.h"
#import "MaterialShadowElevations.h"

@interface MDCFlatButton ()
@property(nonatomic) BOOL hasOpaqueBackground;
@end

@implementation MDCFlatButton

+ (void)initialize {
  // Default background colors.
  [MDCFlatButton.appearance setBackgroundColor:[UIColor clearColor] forState:UIControlStateNormal];
  [MDCFlatButton.appearance setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
  [MDCFlatButton.appearance setElevation:MDCShadowElevationNone forState:UIControlStateNormal];
  [MDCFlatButton.appearance setElevation:MDCShadowElevationNone forState:UIControlStateHighlighted];
  MDCFlatButton.appearance.inkColor = [UIColor colorWithWhite:0 alpha:(CGFloat)0.06];
}

#pragma mark - MDCButton Subclassing

- (void)setHasOpaqueBackground:(BOOL)hasOpaqueBackground {
  _hasOpaqueBackground = hasOpaqueBackground;
  [self updateBackgroundColor];
}

- (BOOL)shouldHaveOpaqueBackground {
  return [super shouldHaveOpaqueBackground] || self.hasOpaqueBackground;
}

@end