/*
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* Copyright (C) 2019 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.systemui.util;
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import android.content.Context;
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import android.text.TextUtils;
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import android.util.AttributeSet;
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import android.widget.TextView;
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/**
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* TextView that changes its ellipsize value with its visibility.
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*
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* The View responds to changes in user-visibility to change its ellipsize from MARQUEE to END
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* and back. Useful for TextView that need to marquee forever.
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*/
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public class AutoMarqueeTextView extends TextView {
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private boolean mAggregatedVisible = false;
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public AutoMarqueeTextView(Context context) {
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super(context);
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}
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public AutoMarqueeTextView(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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public AutoMarqueeTextView(Context context, AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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}
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public AutoMarqueeTextView(Context context, AttributeSet attrs, int defStyleAttr,
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int defStyleRes) {
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super(context, attrs, defStyleAttr, defStyleRes);
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}
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@Override
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protected void onFinishInflate() {
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onVisibilityAggregated(isVisibleToUser());
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}
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@Override
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protected void onAttachedToWindow() {
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super.onAttachedToWindow();
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setSelected(true);
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}
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@Override
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protected void onDetachedFromWindow() {
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super.onDetachedFromWindow();
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setSelected(false);
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}
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@Override
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public void onVisibilityAggregated(boolean isVisible) {
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super.onVisibilityAggregated(isVisible);
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if (isVisible == mAggregatedVisible) return;
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mAggregatedVisible = isVisible;
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if (mAggregatedVisible) {
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setEllipsize(TextUtils.TruncateAt.MARQUEE);
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} else {
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setEllipsize(TextUtils.TruncateAt.END);
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}
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}
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}
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