| // Copyright 2020-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 "MDCFlexibleHeaderShifter.h" |
| #import "MDCFlexibleHeaderView+ShiftBehavior.h" |
| #import "MaterialFlexibleHeader+ShiftBehavior.h" |
| #import "MaterialFlexibleHeader+ShiftBehaviorEnabledWithStatusBar.h" |
| |
| // The suffix for an app extension bundle path. |
| static NSString *const kAppExtensionSuffix = @".appex"; |
| |
| @implementation MDCFlexibleHeaderShifter |
| |
| - (instancetype)init { |
| self = [super init]; |
| if (self) { |
| _behavior = MDCFlexibleHeaderShiftBehaviorDisabled; |
| } |
| return self; |
| } |
| |
| #pragma mark - Behavior |
| |
| - (BOOL)hidesStatusBarWhenShiftedOffscreen { |
| BOOL behaviorWantsStatusBarHidden = |
| self.behavior == MDCFlexibleHeaderShiftBehaviorEnabledWithStatusBar || |
| self.behavior == MDCFlexibleHeaderShiftBehaviorHideable; |
| return behaviorWantsStatusBarHidden && !self.trackingScrollView.pagingEnabled; |
| } |
| |
| + (MDCFlexibleHeaderShiftBehavior)behaviorForCurrentContextFromBehavior: |
| (MDCFlexibleHeaderShiftBehavior)behavior { |
| // In app extensions we do not allow shifting with the status bar. |
| if ([[[NSBundle mainBundle] bundlePath] hasSuffix:kAppExtensionSuffix] && |
| behavior == MDCFlexibleHeaderShiftBehaviorEnabledWithStatusBar) { |
| return MDCFlexibleHeaderShiftBehaviorEnabled; |
| } |
| return behavior; |
| } |
| |
| @end |
