The Tor Browser: mobile/android/base/preferences/MultiChoicePreference.java@fc2d59ddac77 (annotated)

mobile/android/base/preferences/MultiChoicePreference.java@fc2d59ddac77 (annotated)

mobile/android/base/preferences/MultiChoicePreference.java

Wed, 31 Dec 2014 07:22:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:22:50 +0100
branch: TOR_BUG_3246
changeset 4: fc2d59ddac77
permissions: -rw-r--r--

Correct previous dual key logic pending first delivery installment.

 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*-
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 package org.mozilla.gecko.preferences;
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.GeckoSharedPrefs;
 import org.mozilla.gecko.util.ThreadUtils;
 import android.app.AlertDialog;
 import android.app.AlertDialog.Builder;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.res.TypedArray;
 import android.preference.DialogPreference;
 import android.util.AttributeSet;
 import android.widget.Button;
 class MultiChoicePreference extends DialogPreference {
     private static final String LOGTAG = "GeckoMultiChoicePreference";
     private boolean mValues[];
     private boolean mPrevValues[];
     private CharSequence mEntryKeys[];
     private CharSequence mEntries[];
     private CharSequence mInitialValues[];
     public MultiChoicePreference(Context context, AttributeSet attrs) {
         super(context, attrs);
         TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.MultiChoicePreference);
         mEntries = a.getTextArray(R.styleable.MultiChoicePreference_entries);
         mEntryKeys = a.getTextArray(R.styleable.MultiChoicePreference_entryKeys);
         mInitialValues = a.getTextArray(R.styleable.MultiChoicePreference_initialValues);
         a.recycle();
         loadPersistedValues();
     }
     public MultiChoicePreference(Context context) {
         this(context, null);
     }
     /**
      * Sets the human-readable entries to be shown in the list. This will be
      * shown in subsequent dialogs.
      * <p>
      * Each entry must have a corresponding index in
      * {@link #setEntryKeys(CharSequence[])} and
      * {@link #setInitialValues(CharSequence[])}.
      *
      * @param entries The entries.
      */
     public void setEntries(CharSequence[] entries) {
         mEntries = entries.clone();
     }
     /**
      * @param entriesResId The entries array as a resource.
      */
     public void setEntries(int entriesResId) {
         setEntries(getContext().getResources().getTextArray(entriesResId));
     }
     /**
      * Sets the preference keys for preferences shown in the list.
      *
      * @param entryKeys The entry keys.
      */
     public void setEntryKeys(CharSequence[] entryKeys) {
         mEntryKeys = entryKeys.clone();
         loadPersistedValues();
     }
     /**
      * @param entryKeysResId The entryKeys array as a resource.
      */
     public void setEntryKeys(int entryKeysResId) {
         setEntryKeys(getContext().getResources().getTextArray(entryKeysResId));
     }
     /**
      * The array of initial entry values in this list. Each entryValue
      * corresponds to an entryKey. These values are used if a) the preference
      * isn't persisted, or b) the preference is persisted but hasn't yet been
      * set.
      *
      * @param initialValues The entry values
      */
     public void setInitialValues(CharSequence[] initialValues) {
         mInitialValues = initialValues.clone();
         loadPersistedValues();
     }
     /**
      * @param initialValuesResId The initialValues array as a resource.
      */
     public void setInitialValues(int initialValuesResId) {
         setInitialValues(getContext().getResources().getTextArray(initialValuesResId));
     }
     /**
      * The list of translated strings corresponding to each preference.
      *
      * @return The array of entries.
      */
     public CharSequence[] getEntries() {
         return mEntries.clone();
     }
     /**
      * The list of keys corresponding to each preference.
      *
      * @return The array of keys.
      */
     public CharSequence[] getEntryKeys() {
         return mEntryKeys.clone();
     }
     /**
      * The list of initial values for each preference. Each string in this list
      * should be either "true" or "false".
      *
      * @return The array of initial values.
      */
     public CharSequence[] getInitialValues() {
         return mInitialValues.clone();
     }
     /**
      * The list of values for each preference. These values are updated after
      * the dialog has been displayed.
      *
      * @return The array of values.
      */
     public boolean[] getValues() {
         return mValues.clone();
     }
     @Override
     protected void onPrepareDialogBuilder(Builder builder) {
         if (mEntries == null || mEntryKeys == null || mInitialValues == null) {
             throw new IllegalStateException(
                     "MultiChoicePreference requires entries, entryKeys, and initialValues arrays.");
         }
         if (mEntries.length != mEntryKeys.length || mEntryKeys.length != mInitialValues.length) {
             throw new IllegalStateException(
                     "MultiChoicePreference entries, entryKeys, and initialValues arrays must be the same length");
         }
         builder.setMultiChoiceItems(mEntries, mValues, new DialogInterface.OnMultiChoiceClickListener() {
             @Override
             public void onClick(DialogInterface dialog, int which, boolean val) {
                 // mValues is automatically updated when checkboxes are clicked
                 // enable positive button only if at least one item is checked
                 boolean enabled = false;
                 for (int i = 0; i < mValues.length; i++) {
                     if (mValues[i]) {
                         enabled = true;
                         break;
                     }
                 }
                 Button button = ((AlertDialog) dialog).getButton(DialogInterface.BUTTON_POSITIVE);
                 if (button.isEnabled() != enabled)
                     button.setEnabled(enabled);
             }
         });
     }
     @Override
     protected void onDialogClosed(boolean positiveResult) {
         if (mPrevValues == null || mInitialValues == null) {
             // Initialization is done asynchronously, so these values may not
             // have been set before the dialog was closed.
             return;
         }
         if (!positiveResult) {
             // user cancelled; reset checkbox values to their previous state
             mValues = mPrevValues.clone();
             return;
         } else {
             mPrevValues = mValues.clone();
         }
         ThreadUtils.postToBackgroundThread(new Runnable() {
             @Override
             public void run() {
                 for (int i = 0; i < mEntryKeys.length; i++) {
                     String key = mEntryKeys[i].toString();
                     persistBoolean(key, mValues[i]);
                 }
             }
         });
     }
     protected boolean persistBoolean(String key, boolean value) {
         if (isPersistent()) {
             if (value == getPersistedBoolean(!value)) {
                 // It's already there, so the same as persisting
                 return true;
             }
             GeckoSharedPrefs.forApp(getContext())
                             .edit().putBoolean(key, value).commit();
             return true;
         }
         return false;
     }
     protected boolean getPersistedBoolean(String key, boolean defaultReturnValue) {
         if (!isPersistent())
             return defaultReturnValue;
         return GeckoSharedPrefs.forApp(getContext())
                                .getBoolean(key, defaultReturnValue);
     }
     /**
      * Loads persistent prefs from shared preferences. If the preferences
      * aren't persistent or haven't yet been stored, they will be set to their
      * initial values.
      */
     private void loadPersistedValues() {
         if (mEntryKeys == null || mInitialValues == null)
             return;
         final int entryCount = mEntryKeys.length;
         if (entryCount != mEntries.length || entryCount != mInitialValues.length) {
             throw new IllegalStateException(
                     "MultiChoicePreference entryKeys and initialValues arrays must be the same length");
         }
         mValues = new boolean[entryCount];
         ThreadUtils.postToBackgroundThread(new Runnable() {
             @Override
             public void run() {
                 for (int i = 0; i < entryCount; i++) {
                     String key = mEntryKeys[i].toString();
                     boolean initialValue = mInitialValues[i].equals("true");
                     mValues[i] = getPersistedBoolean(key, initialValue);
                 }
                 mPrevValues = mValues.clone();
             }
         });
     }
 }

The Tor Browser / annotate

mobile/android/base/preferences/MultiChoicePreference.java@fc2d59ddac77 (annotated)

mobile/android/base/preferences/MultiChoicePreference.java