a7a7bfe59f
Moved DimmableIconPreference from location to the root package since it is now used in several places. Add user action now uses DimmableIconPreference. Added a new summary string, which is displayed when no more users can be added. Bug: 20892920 Change-Id: I00b00f80ba8933a00a2de85777b9f7e55d03c31b
77 lines
2.4 KiB
Java
77 lines
2.4 KiB
Java
/*
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* Copyright (C) 2014 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.settings;
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import android.annotation.Nullable;
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import android.content.Context;
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import android.graphics.drawable.Drawable;
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import android.preference.Preference;
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import android.text.TextUtils;
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import android.util.AttributeSet;
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import android.view.View;
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import android.widget.TextView;
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/**
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* A preference item that can dim the icon when it's disabled, either directly or because its parent
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* is disabled.
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*/
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public class DimmableIconPreference extends Preference {
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private static final int ICON_ALPHA_ENABLED = 255;
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private static final int ICON_ALPHA_DISABLED = 102;
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private final CharSequence mContentDescription;
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public DimmableIconPreference(Context context, AttributeSet attrs) {
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super(context, attrs);
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mContentDescription = null;
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}
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public DimmableIconPreference(Context context, @Nullable CharSequence contentDescription) {
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super(context);
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mContentDescription = contentDescription;
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}
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private void dimIcon(boolean dimmed) {
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Drawable icon = getIcon();
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if (icon != null) {
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icon.mutate().setAlpha(dimmed ? ICON_ALPHA_DISABLED : ICON_ALPHA_ENABLED);
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setIcon(icon);
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}
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}
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@Override
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public void onParentChanged(Preference parent, boolean disableChild) {
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dimIcon(disableChild);
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super.onParentChanged(parent, disableChild);
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}
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@Override
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public void setEnabled(boolean enabled) {
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dimIcon(!enabled);
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super.setEnabled(enabled);
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}
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@Override
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protected void onBindView(View view) {
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super.onBindView(view);
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if (!TextUtils.isEmpty(mContentDescription)) {
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final TextView titleView = (TextView) view.findViewById(android.R.id.title);
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titleView.setContentDescription(mContentDescription);
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}
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}
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}
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