Use DimmableIconPreference for Add user action

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

3 files changed, 4 insertions, 83 deletions

diff --git a/src/com/android/settings/location/DimmableIconPreference.java b/src/com/android/settings/location/DimmableIconPreference.java
deleted file mode 100644
index f785992..0000000
--- a/src/com/android/settings/location/DimmableIconPreference.java
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * 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.annotation.Nullable;
-import android.content.Context;
-import android.graphics.drawable.Drawable;
-import android.preference.Preference;
-import android.text.TextUtils;
-import android.util.AttributeSet;
-import android.view.View;
-import android.widget.TextView;
-
-/**
- * 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;
-
-    private final CharSequence mContentDescription;
-
-    public DimmableIconPreference(Context context, AttributeSet attrs, int defStyle,
-            @Nullable CharSequence contentDescription) {
-        super(context, attrs, defStyle);
-        mContentDescription = contentDescription;
-    }
-
-    public DimmableIconPreference(Context context, AttributeSet attrs,
-            @Nullable CharSequence contentDescription) {
-        super(context, attrs);
-        mContentDescription = contentDescription;
-    }
-
-    public DimmableIconPreference(Context context, @Nullable CharSequence contentDescription) {
-        super(context);
-        mContentDescription = contentDescription;
-    }
-
-    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);
-    }
-
-    @Override
-    protected void onBindView(View view) {
-        super.onBindView(view);
-        if (!TextUtils.isEmpty(mContentDescription)) {
-            final TextView titleView = (TextView) view.findViewById(android.R.id.title);
-            titleView.setContentDescription(mContentDescription);
-        }
-    }
-}
diff --git a/src/com/android/settings/location/RecentLocationApps.java b/src/com/android/settings/location/RecentLocationApps.java
index d7b62e7..66bdda5 100644
--- a/src/com/android/settings/location/RecentLocationApps.java
+++ b/src/com/android/settings/location/RecentLocationApps.java
@@ -31,6 +31,8 @@ import android.os.UserHandle;
 import android.os.UserManager;
 import android.preference.Preference;
 import android.util.Log;
+
+import com.android.settings.DimmableIconPreference;
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
 import com.android.settings.applications.InstalledAppDetails;
diff --git a/src/com/android/settings/location/SettingsInjector.java b/src/com/android/settings/location/SettingsInjector.java
index ef6117b..283430e 100644
--- a/src/com/android/settings/location/SettingsInjector.java
+++ b/src/com/android/settings/location/SettingsInjector.java
@@ -39,6 +39,8 @@ import android.util.AttributeSet;
 import android.util.Log;
 import android.util.Xml;
 
+import com.android.settings.DimmableIconPreference;
+
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;