/*
- * Copyright (C) 2013 The Android Open Source Project
+ * 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.
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.
+ * 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) {
+ 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) {
+ public DimmableIconPreference(Context context, AttributeSet attrs,
+ @Nullable CharSequence contentDescription) {
super(context, attrs);
+ mContentDescription = contentDescription;
}
- public DimmableIconPreference(Context context) {
+ public DimmableIconPreference(Context context, @Nullable CharSequence contentDescription) {
super(context);
+ mContentDescription = contentDescription;
}
- @Override
- public void onParentChanged(Preference parent, boolean disableChild) {
+ private void dimIcon(boolean dimmed) {
Drawable icon = getIcon();
if (icon != null) {
- icon.setAlpha(disableChild ? ICON_ALPHA_DISABLED : ICON_ALPHA_ENABLED);
+ 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);
+ }
+ }
}