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Commit db0b7637 authored by Lifu Tang's avatar Lifu Tang
Browse files

Dim the preference icons when its disabled

- Fix b/16956979

Change-Id: Idfa3fddf63746dea1db0c75dedab06b57aaf5de7
parent f14fa7ed
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/*
 * Copyright (C) 2014 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.settings.location;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.preference.Preference;
import android.util.AttributeSet;

/**
 * A preference item that can dim the icon when it's disabled, either directly or because its parent
 * is disabled.
 */
public class DimmableIconPreference extends Preference {
    private static final int ICON_ALPHA_ENABLED = 255;
    private static final int ICON_ALPHA_DISABLED = 102;

    public DimmableIconPreference(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public DimmableIconPreference(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public DimmableIconPreference(Context context) {
        super(context);
    }

    private void dimIcon(boolean dimmed) {
        Drawable icon = getIcon();
        if (icon != null) {
            icon.mutate().setAlpha(dimmed ? ICON_ALPHA_DISABLED : ICON_ALPHA_ENABLED);
            setIcon(icon);
        }
    }

    @Override
    public void onParentChanged(Preference parent, boolean disableChild) {
        dimIcon(disableChild);
        super.onParentChanged(parent, disableChild);
    }

    @Override
    public void setEnabled(boolean enabled) {
        dimIcon(!enabled);
        super.setEnabled(enabled);
    }
}
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@@ -23,7 +23,7 @@ import com.android.internal.annotations.Immutable;
import com.android.internal.util.Preconditions;

/**
 * Specifies a setting that is being injected into Settings > Location > Location services.
 * Specifies a setting that is being injected into Settings > Location > Location services.
 *
 * @see android.location.SettingInjectorService
 */
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@@ -81,7 +81,7 @@ public class RecentLocationApps {
     * Subclass of {@link Preference} to intercept views and allow content description to be set on
     * them for accessibility purposes.
     */
    private static class AccessiblePreference extends Preference {
    private static class AccessiblePreference extends DimmableIconPreference {
        public CharSequence mContentDescription;

        public AccessiblePreference(Context context, CharSequence contentDescription) {
+1 −1
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@@ -247,7 +247,7 @@ class SettingsInjector {
     * Adds an injected setting to the root.
     */
    private Preference addServiceSetting(List<Preference> prefs, InjectedSetting info) {
        Preference pref = new Preference(mContext);
        Preference pref = new DimmableIconPreference(mContext);
        pref.setTitle(info.title);
        pref.setSummary(null);
        PackageManager pm = mContext.getPackageManager();