mirror of
https://github.com/LawnchairLauncher/lawnchair.git
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6bb8d79549
This CL adds a layer of OnBackPressedHanlderRouter to Launcher: 1. 4 OnBackPressedHandler(s) are added in such order: auto cancel action mode handler, drag handler, view handler and state handler 2. first handler who can handle back will handle the entire back gesture 3. Let WidgetsFullSheet to handle widget to all apps transition Bug: b/260956481 Test: manual Change-Id: Idbce3dcec746226dd68aaabaddc8fe01334e9673
46 lines
1.6 KiB
Java
46 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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}
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