The Tor Browser: mobile/android/base/preferences/CustomListCategory.java@fc2d59ddac77

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 package org.mozilla.gecko.preferences;

     7 import android.content.Context;

     8 import android.preference.PreferenceCategory;

     9 import android.util.AttributeSet;

    11 public abstract class CustomListCategory extends PreferenceCategory {

    12     protected CustomListPreference mDefaultReference;

    14     public CustomListCategory(Context context) {

    15         super(context);

    16     }

    18     public CustomListCategory(Context context, AttributeSet attrs) {

    19         super(context, attrs);

    20     }

    22     public CustomListCategory(Context context, AttributeSet attrs, int defStyle) {

    23         super(context, attrs, defStyle);

    24     }

    26     @Override

    27     protected void onAttachedToActivity() {

    28         super.onAttachedToActivity();

    30         setOrderingAsAdded(true);

    31     }

    33     /**

    34      * Set the default to some available list item. Used if the current default is removed or

    35      * disabled.

    36      */

    37     protected void setFallbackDefault() {

    38         if (getPreferenceCount() > 0) {

    39             CustomListPreference aItem = (CustomListPreference) getPreference(0);

    40             setDefault(aItem);

    41         }

    42     }

    44     /**

    45      * Removes the given item from the set of available list items.

    46      * This only updates the UI, so callers are responsible for persisting any state.

    47      *

    48      * @param item The given item to remove.

    49      */

    50     public void uninstall(CustomListPreference item) {

    51         removePreference(item);

    52         if (item == mDefaultReference) {

    53             // If the default is being deleted, set a new default.

    54             setFallbackDefault();

    55         }

    56     }

    58     /**

    59      * Sets the given item as the current default.

    60      * This only updates the UI, so callers are responsible for persisting any state.

    61      *

    62      * @param item The intended new default.

    63      */

    64     public void setDefault(CustomListPreference item) {

    65         if (mDefaultReference != null) {

    66             mDefaultReference.setIsDefault(false);

    67         }

    69         item.setIsDefault(true);

    70         mDefaultReference = item;

    71     }

    72 }

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