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/*
* Copyright (C) 2021 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.screenshot;
import static com.android.systemui.screenshot.LogConfig.DEBUG_DISMISS;
import android.content.Context;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;
import android.view.accessibility.AccessibilityManager;
import javax.inject.Inject;
/**
* Starts a configurable runnable on timeout. Can be cancelled. Used for automatically dismissing
* floating overlays.
*/
public class TimeoutHandler extends Handler {
private static final String TAG = "TimeoutHandler";
private static final int MESSAGE_CORNER_TIMEOUT = 2;
private static final int DEFAULT_TIMEOUT_MILLIS = 6000;
private final Context mContext;
private Runnable mOnTimeout;
private int mDefaultTimeout = DEFAULT_TIMEOUT_MILLIS;
@Inject
public TimeoutHandler(Context context) {
super(Looper.getMainLooper());
mContext = context;
mOnTimeout = () -> {
};
}
public void setOnTimeoutRunnable(Runnable onTimeout) {
mOnTimeout = onTimeout;
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_CORNER_TIMEOUT:
mOnTimeout.run();
break;
default:
break;
}
}
/**
* Set the default timeout (if not overridden by accessibility)
*/
public void setDefaultTimeoutMillis(int timeout) {
mDefaultTimeout = timeout;
}
int getDefaultTimeoutMillis() {
return mDefaultTimeout;
}
/**
* Cancel the current timeout, if any. To reset the delayed runnable use resetTimeout instead.
*/
public void cancelTimeout() {
if (DEBUG_DISMISS) {
Log.d(TAG, "cancel timeout");
}
removeMessages(MESSAGE_CORNER_TIMEOUT);
}
/**
* Reset the timeout.
*/
public void resetTimeout() {
cancelTimeout();
AccessibilityManager accessibilityManager = (AccessibilityManager)
mContext.getSystemService(Context.ACCESSIBILITY_SERVICE);
long timeoutMs = accessibilityManager.getRecommendedTimeoutMillis(
mDefaultTimeout,
AccessibilityManager.FLAG_CONTENT_CONTROLS);
sendMessageDelayed(obtainMessage(MESSAGE_CORNER_TIMEOUT), timeoutMs);
if (DEBUG_DISMISS) {
Log.d(TAG, "dismiss timeout: " + timeoutMs + " ms");
}
}
}
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