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/*
* Copyright (C) 2017 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.keyguard;
import android.app.PendingIntent;
import android.app.slice.Slice;
import android.app.slice.SliceItem;
import android.app.slice.SliceQuery;
import android.content.Context;
import android.database.ContentObserver;
import android.graphics.Color;
import android.net.Uri;
import android.os.Handler;
import android.util.AttributeSet;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.android.internal.graphics.ColorUtils;
import com.android.systemui.R;
import com.android.systemui.keyguard.KeyguardSliceProvider;
import java.util.Collections;
/**
* View visible under the clock on the lock screen and AoD.
*/
public class KeyguardSliceView extends LinearLayout {
private final Uri mKeyguardSliceUri;
private TextView mTitle;
private TextView mText;
private Slice mSlice;
private PendingIntent mSliceAction;
private int mTextColor;
private float mDarkAmount = 0;
private final ContentObserver mObserver;
public KeyguardSliceView(Context context) {
this(context, null, 0);
}
public KeyguardSliceView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public KeyguardSliceView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mObserver = new KeyguardSliceObserver(new Handler());
mKeyguardSliceUri = Uri.parse(KeyguardSliceProvider.KEYGUARD_SLICE_URI);;
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
mTitle = findViewById(R.id.title);
mText = findViewById(R.id.text);
mTextColor = mTitle.getCurrentTextColor();
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
// Set initial content
showSlice(Slice.bindSlice(getContext().getContentResolver(), mKeyguardSliceUri,
Collections.emptyList()));
// Make sure we always have the most current slice
getContext().getContentResolver().registerContentObserver(mKeyguardSliceUri,
false /* notifyDescendants */, mObserver);
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
getContext().getContentResolver().unregisterContentObserver(mObserver);
}
private void showSlice(Slice slice) {
// Items will be wrapped into an action when they have tap targets.
SliceItem actionSlice = SliceQuery.find(slice, SliceItem.FORMAT_ACTION);
if (actionSlice != null) {
mSlice = actionSlice.getSlice();
mSliceAction = actionSlice.getAction();
} else {
mSlice = slice;
mSliceAction = null;
}
if (mSlice == null) {
setVisibility(GONE);
return;
}
SliceItem title = SliceQuery.find(mSlice, SliceItem.FORMAT_TEXT, Slice.HINT_TITLE, null);
if (title == null) {
mTitle.setVisibility(GONE);
} else {
mTitle.setVisibility(VISIBLE);
mTitle.setText(title.getText());
}
SliceItem text = SliceQuery.find(mSlice, SliceItem.FORMAT_TEXT, null, Slice.HINT_TITLE);
if (text == null) {
mText.setVisibility(GONE);
} else {
mText.setVisibility(VISIBLE);
mText.setText(text.getText());
}
final int visibility = title == null && text == null ? GONE : VISIBLE;
if (visibility != getVisibility()) {
setVisibility(visibility);
}
}
public void setDark(float darkAmount) {
mDarkAmount = darkAmount;
updateTextColors();
}
public void setTextColor(int textColor) {
mTextColor = textColor;
}
private void updateTextColors() {
final int blendedColor = ColorUtils.blendARGB(mTextColor, Color.WHITE, mDarkAmount);
mTitle.setTextColor(blendedColor);
mText.setTextColor(blendedColor);
}
private class KeyguardSliceObserver extends ContentObserver {
KeyguardSliceObserver(Handler handler) {
super(handler);
}
@Override
public void onChange(boolean selfChange) {
this.onChange(selfChange, null);
}
@Override
public void onChange(boolean selfChange, Uri uri) {
showSlice(Slice.bindSlice(getContext().getContentResolver(), mKeyguardSliceUri,
Collections.emptyList()));
}
}
}
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