MrSluffy
4276067c6c
- Bring back OnBackPressedHandler so we can support lower version TODO : Recreate OnBackAnimationCallback
45 lines
1.6 KiB
Java
45 lines
1.6 KiB
Java
/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3;
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import androidx.annotation.FloatRange;
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/**
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* Interface that mimics {@link android.window.OnBackInvokedCallback} without dependencies on U's
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* API such as {@link android.window.BackEvent}.
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*
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* <p> Impl can assume below order during a back gesture:
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* <ol>
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* <li> [optional] one {@link #onBackStarted()} will be called to start the gesture
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* <li> zero or multiple {@link #onBackProgressed(float)} will be called during swipe gesture
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* <li> either one of {@link #onBackInvoked()} or {@link #onBackCancelled()} will be called to end
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* the gesture
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*/
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public interface OnBackPressedHandler{
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/** Called when back has started. */
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default void onBackStarted() {}
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/** Called when back is committed. */
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void onBackInvoked();
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/** Called with back gesture's progress. */
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default void onBackProgressed(@FloatRange(from = 0.0, to = 1.0) float backProgress) {}
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/** Called when user drops the back gesture. */
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default void onBackCancelled() {}
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} |