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/*
* Copyright (C) 2019 The Android Open Source Project
*
* 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.
*/
package com.android.systemui.plugins.shared;
import android.view.MotionEvent;
import java.io.PrintWriter;
/**
* Interface to control the overlay on Launcher
*/
public interface LauncherOverlayManager {
default void onDeviceProvideChanged() { }
default void onAttachedToWindow() { }
default void onDetachedFromWindow() { }
default void dump(String prefix, PrintWriter w) { }
default void openOverlay() { }
default void hideOverlay(boolean animate) {
hideOverlay(animate ? 200 : 0);
}
default void hideOverlay(int duration) { }
default void onActivityStarted() { }
default void onActivityResumed() { }
default void onActivityPaused() { }
default void onActivityStopped() { }
default void onActivityDestroyed() { }
/**
* @deprecated use LauncherOverlayTouchProxy directly
*/
@Deprecated
interface LauncherOverlay extends LauncherOverlayTouchProxy {
/**
* Touch interaction leading to overscroll has begun
*/
void onScrollInteractionBegin();
/**
* Touch interaction related to overscroll has ended
*/
void onScrollInteractionEnd();
/**
* Scroll progress, between 0 and 100, when the user scrolls beyond the leftmost
* screen (or in the case of RTL, the rightmost screen).
*/
void onScrollChange(float progress, boolean rtl);
/**
* Called when the launcher is ready to use the overlay
* @param callbacks A set of callbacks provided by Launcher in relation to the overlay
*/
void setOverlayCallbacks(LauncherOverlayCallbacks callbacks);
@Override
default void onFlingVelocity(float velocity) { }
@Override
default void onOverlayMotionEvent(MotionEvent ev, float scrollProgress) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN -> onScrollInteractionBegin();
case MotionEvent.ACTION_MOVE -> onScrollChange(scrollProgress, false);
case MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> onScrollInteractionEnd();
}
}
}
interface LauncherOverlayTouchProxy {
/**
* Called just before finishing scroll interaction to indicate the fling velocity
*/
void onFlingVelocity(float velocity);
/**
* Called to dispatch various motion events to the overlay
*/
void onOverlayMotionEvent(MotionEvent ev, float scrollProgress);
/**
* Called when the launcher is ready to use the overlay
* @param callbacks A set of callbacks provided by Launcher in relation to the overlay
*/
default void setOverlayCallbacks(LauncherOverlayCallbacks callbacks) { }
}
interface LauncherOverlayCallbacks {
void onOverlayScrollChanged(float progress);
}
}
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