Switch from ActionBarSherlock to ActionBarCompat

1 files changed, 0 insertions, 1104 deletions

diff --git a/libraries/ActionBarSherlock/src/com/actionbarsherlock/widget/ActivityChooserModel.java b/libraries/ActionBarSherlock/src/com/actionbarsherlock/widget/ActivityChooserModel.java
deleted file mode 100644
index d7f110fc6..000000000
--- a/libraries/ActionBarSherlock/src/com/actionbarsherlock/widget/ActivityChooserModel.java
+++ /dev/null
@@ -1,1104 +0,0 @@
-/*
- * Copyright (C) 2011 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.actionbarsherlock.widget;
-
-import android.content.ComponentName;
-import android.content.Context;
-import android.content.Intent;
-import android.content.pm.ResolveInfo;
-import android.database.DataSetObservable;
-import android.os.Handler;
-import android.text.TextUtils;
-import android.util.Log;
-import android.util.Xml;
-import org.xmlpull.v1.XmlPullParser;
-import org.xmlpull.v1.XmlPullParserException;
-import org.xmlpull.v1.XmlSerializer;
-
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.math.BigDecimal;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.LinkedHashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-import java.util.concurrent.Executor;
-import java.util.concurrent.Executors;
-
-/**
- * <p>
- * This class represents a data model for choosing a component for handing a
- * given {@link Intent}. The model is responsible for querying the system for
- * activities that can handle the given intent and order found activities
- * based on historical data of previous choices. The historical data is stored
- * in an application private file. If a client does not want to have persistent
- * choice history the file can be omitted, thus the activities will be ordered
- * based on historical usage for the current session.
- * <p>
- * </p>
- * For each backing history file there is a singleton instance of this class. Thus,
- * several clients that specify the same history file will share the same model. Note
- * that if multiple clients are sharing the same model they should implement semantically
- * equivalent functionality since setting the model intent will change the found
- * activities and they may be inconsistent with the functionality of some of the clients.
- * For example, choosing a share activity can be implemented by a single backing
- * model and two different views for performing the selection. If however, one of the
- * views is used for sharing but the other for importing, for example, then each
- * view should be backed by a separate model.
- * </p>
- * <p>
- * The way clients interact with this class is as follows:
- * </p>
- * <p>
- * <pre>
- * <code>
- *  // Get a model and set it to a couple of clients with semantically similar function.
- *  ActivityChooserModel dataModel =
- *      ActivityChooserModel.get(context, "task_specific_history_file_name.xml");
- *
- *  ActivityChooserModelClient modelClient1 = getActivityChooserModelClient1();
- *  modelClient1.setActivityChooserModel(dataModel);
- *
- *  ActivityChooserModelClient modelClient2 = getActivityChooserModelClient2();
- *  modelClient2.setActivityChooserModel(dataModel);
- *
- *  // Set an intent to choose a an activity for.
- *  dataModel.setIntent(intent);
- * <pre>
- * <code>
- * </p>
- * <p>
- * <strong>Note:</strong> This class is thread safe.
- * </p>
- *
- * @hide
- */
-class ActivityChooserModel extends DataSetObservable {
-
-    /**
-     * Client that utilizes an {@link ActivityChooserModel}.
-     */
-    public interface ActivityChooserModelClient {
-
-        /**
-         * Sets the {@link ActivityChooserModel}.
-         *
-         * @param dataModel The model.
-         */
-        public void setActivityChooserModel(ActivityChooserModel dataModel);
-    }
-
-    /**
-     * Defines a sorter that is responsible for sorting the activities
-     * based on the provided historical choices and an intent.
-     */
-    public interface ActivitySorter {
-
-        /**
-         * Sorts the <code>activities</code> in descending order of relevance
-         * based on previous history and an intent.
-         *
-         * @param intent The {@link Intent}.
-         * @param activities Activities to be sorted.
-         * @param historicalRecords Historical records.
-         */
-        // This cannot be done by a simple comparator since an Activity weight
-        // is computed from history. Note that Activity implements Comparable.
-        public void sort(Intent intent, List<ActivityResolveInfo> activities,
-                List<HistoricalRecord> historicalRecords);
-    }
-
-    /**
-     * Listener for choosing an activity.
-     */
-    public interface OnChooseActivityListener {
-
-        /**
-         * Called when an activity has been chosen. The client can decide whether
-         * an activity can be chosen and if so the caller of
-         * {@link ActivityChooserModel#chooseActivity(int)} will receive and {@link Intent}
-         * for launching it.
-         * <p>
-         * <strong>Note:</strong> Modifying the intent is not permitted and
-         *     any changes to the latter will be ignored.
-         * </p>
-         *
-         * @param host The listener's host model.
-         * @param intent The intent for launching the chosen activity.
-         * @return Whether the intent is handled and should not be delivered to clients.
-         *
-         * @see ActivityChooserModel#chooseActivity(int)
-         */
-        public boolean onChooseActivity(ActivityChooserModel host, Intent intent);
-    }
-
-    /**
-     * Flag for selecting debug mode.
-     */
-    private static final boolean DEBUG = false;
-
-    /**
-     * Tag used for logging.
-     */
-    private static final String LOG_TAG = ActivityChooserModel.class.getSimpleName();
-
-    /**
-     * The root tag in the history file.
-     */
-    private static final String TAG_HISTORICAL_RECORDS = "historical-records";
-
-    /**
-     * The tag for a record in the history file.
-     */
-    private static final String TAG_HISTORICAL_RECORD = "historical-record";
-
-    /**
-     * Attribute for the activity.
-     */
-    private static final String ATTRIBUTE_ACTIVITY = "activity";
-
-    /**
-     * Attribute for the choice time.
-     */
-    private static final String ATTRIBUTE_TIME = "time";
-
-    /**
-     * Attribute for the choice weight.
-     */
-    private static final String ATTRIBUTE_WEIGHT = "weight";
-
-    /**
-     * The default name of the choice history file.
-     */
-    public static final String DEFAULT_HISTORY_FILE_NAME =
-        "activity_choser_model_history.xml";
-
-    /**
-     * The default maximal length of the choice history.
-     */
-    public static final int DEFAULT_HISTORY_MAX_LENGTH = 50;
-
-    /**
-     * The amount with which to inflate a chosen activity when set as default.
-     */
-    private static final int DEFAULT_ACTIVITY_INFLATION = 5;
-
-    /**
-     * Default weight for a choice record.
-     */
-    private static final float DEFAULT_HISTORICAL_RECORD_WEIGHT = 1.0f;
-
-    /**
-     * The extension of the history file.
-     */
-    private static final String HISTORY_FILE_EXTENSION = ".xml";
-
-    /**
-     * An invalid item index.
-     */
-    private static final int INVALID_INDEX = -1;
-
-    /**
-     * Lock to guard the model registry.
-     */
-    private static final Object sRegistryLock = new Object();
-
-    /**
-     * This the registry for data models.
-     */
-    private static final Map<String, ActivityChooserModel> sDataModelRegistry =
-        new HashMap<String, ActivityChooserModel>();
-
-    /**
-     * Lock for synchronizing on this instance.
-     */
-    private final Object mInstanceLock = new Object();
-
-    /**
-     * List of activities that can handle the current intent.
-     */
-    private final List<ActivityResolveInfo> mActivites = new ArrayList<ActivityResolveInfo>();
-
-    /**
-     * List with historical choice records.
-     */
-    private final List<HistoricalRecord> mHistoricalRecords = new ArrayList<HistoricalRecord>();
-
-    /**
-     * Context for accessing resources.
-     */
-    private final Context mContext;
-
-    /**
-     * The name of the history file that backs this model.
-     */
-    private final String mHistoryFileName;
-
-    /**
-     * The intent for which a activity is being chosen.
-     */
-    private Intent mIntent;
-
-    /**
-     * The sorter for ordering activities based on intent and past choices.
-     */
-    private ActivitySorter mActivitySorter = new DefaultSorter();
-
-    /**
-     * The maximal length of the choice history.
-     */
-    private int mHistoryMaxSize = DEFAULT_HISTORY_MAX_LENGTH;
-
-    /**
-     * Flag whether choice history can be read. In general many clients can
-     * share the same data model and {@link #readHistoricalData()} may be called
-     * by arbitrary of them any number of times. Therefore, this class guarantees
-     * that the very first read succeeds and subsequent reads can be performed
-     * only after a call to {@link #persistHistoricalData()} followed by change
-     * of the share records.
-     */
-    private boolean mCanReadHistoricalData = true;
-
-    /**
-     * Flag whether the choice history was read. This is used to enforce that
-     * before calling {@link #persistHistoricalData()} a call to
-     * {@link #persistHistoricalData()} has been made. This aims to avoid a
-     * scenario in which a choice history file exits, it is not read yet and
-     * it is overwritten. Note that always all historical records are read in
-     * full and the file is rewritten. This is necessary since we need to
-     * purge old records that are outside of the sliding window of past choices.
-     */
-    private boolean mReadShareHistoryCalled = false;
-
-    /**
-     * Flag whether the choice records have changed. In general many clients can
-     * share the same data model and {@link #persistHistoricalData()} may be called
-     * by arbitrary of them any number of times. Therefore, this class guarantees
-     * that choice history will be persisted only if it has changed.
-     */
-    private boolean mHistoricalRecordsChanged = true;
-
-    /**
-     * Hander for scheduling work on client tread.
-     */
-    private final Handler mHandler = new Handler();
-
-    /**
-     * Policy for controlling how the model handles chosen activities.
-     */
-    private OnChooseActivityListener mActivityChoserModelPolicy;
-
-    /**
-     * Gets the data model backed by the contents of the provided file with historical data.
-     * Note that only one data model is backed by a given file, thus multiple calls with
-     * the same file name will return the same model instance. If no such instance is present
-     * it is created.
-     * <p>
-     * <strong>Note:</strong> To use the default historical data file clients should explicitly
-     * pass as file name {@link #DEFAULT_HISTORY_FILE_NAME}. If no persistence of the choice
-     * history is desired clients should pass <code>null</code> for the file name. In such
-     * case a new model is returned for each invocation.
-     * </p>
-     *
-     * <p>
-     * <strong>Always use difference historical data files for semantically different actions.
-     * For example, sharing is different from importing.</strong>
-     * </p>
-     *
-     * @param context Context for loading resources.
-     * @param historyFileName File name with choice history, <code>null</code>
-     *        if the model should not be backed by a file. In this case the activities
-     *        will be ordered only by data from the current session.
-     *
-     * @return The model.
-     */
-    public static ActivityChooserModel get(Context context, String historyFileName) {
-        synchronized (sRegistryLock) {
-            ActivityChooserModel dataModel = sDataModelRegistry.get(historyFileName);
-            if (dataModel == null) {
-                dataModel = new ActivityChooserModel(context, historyFileName);
-                sDataModelRegistry.put(historyFileName, dataModel);
-            }
-            dataModel.readHistoricalData();
-            return dataModel;
-        }
-    }
-
-    /**
-     * Creates a new instance.
-     *
-     * @param context Context for loading resources.
-     * @param historyFileName The history XML file.
-     */
-    private ActivityChooserModel(Context context, String historyFileName) {
-        mContext = context.getApplicationContext();
-        if (!TextUtils.isEmpty(historyFileName)
-                && !historyFileName.endsWith(HISTORY_FILE_EXTENSION)) {
-            mHistoryFileName = historyFileName + HISTORY_FILE_EXTENSION;
-        } else {
-            mHistoryFileName = historyFileName;
-        }
-    }
-
-    /**
-     * Sets an intent for which to choose a activity.
-     * <p>
-     * <strong>Note:</strong> Clients must set only semantically similar
-     * intents for each data model.
-     * <p>
-     *
-     * @param intent The intent.
-     */
-    public void setIntent(Intent intent) {
-        synchronized (mInstanceLock) {
-            if (mIntent == intent) {
-                return;
-            }
-            mIntent = intent;
-            loadActivitiesLocked();
-        }
-    }
-
-    /**
-     * Gets the intent for which a activity is being chosen.
-     *
-     * @return The intent.
-     */
-    public Intent getIntent() {
-        synchronized (mInstanceLock) {
-            return mIntent;
-        }
-    }
-
-    /**
-     * Gets the number of activities that can handle the intent.
-     *
-     * @return The activity count.
-     *
-     * @see #setIntent(Intent)
-     */
-    public int getActivityCount() {
-        synchronized (mInstanceLock) {
-            return mActivites.size();
-        }
-    }
-
-    /**
-     * Gets an activity at a given index.
-     *
-     * @return The activity.
-     *
-     * @see ActivityResolveInfo
-     * @see #setIntent(Intent)
-     */
-    public ResolveInfo getActivity(int index) {
-        synchronized (mInstanceLock) {
-            return mActivites.get(index).resolveInfo;
-        }
-    }
-
-    /**
-     * Gets the index of a the given activity.
-     *
-     * @param activity The activity index.
-     *
-     * @return The index if found, -1 otherwise.
-     */
-    public int getActivityIndex(ResolveInfo activity) {
-        List<ActivityResolveInfo> activities = mActivites;
-        final int activityCount = activities.size();
-        for (int i = 0; i < activityCount; i++) {
-            ActivityResolveInfo currentActivity = activities.get(i);
-            if (currentActivity.resolveInfo == activity) {
-                return i;
-            }
-        }
-        return INVALID_INDEX;
-    }
-
-    /**
-     * Chooses a activity to handle the current intent. This will result in
-     * adding a historical record for that action and construct intent with
-     * its component name set such that it can be immediately started by the
-     * client.
-     * <p>
-     * <strong>Note:</strong> By calling this method the client guarantees
-     * that the returned intent will be started. This intent is returned to
-     * the client solely to let additional customization before the start.
-     * </p>
-     *
-     * @return An {@link Intent} for launching the activity or null if the
-     *         policy has consumed the intent.
-     *
-     * @see HistoricalRecord
-     * @see OnChooseActivityListener
-     */
-    public Intent chooseActivity(int index) {
-        ActivityResolveInfo chosenActivity = mActivites.get(index);
-
-        ComponentName chosenName = new ComponentName(
-                chosenActivity.resolveInfo.activityInfo.packageName,
-                chosenActivity.resolveInfo.activityInfo.name);
-
-        Intent choiceIntent = new Intent(mIntent);
-        choiceIntent.setComponent(chosenName);
-
-        if (mActivityChoserModelPolicy != null) {
-            // Do not allow the policy to change the intent.
-            Intent choiceIntentCopy = new Intent(choiceIntent);
-            final boolean handled = mActivityChoserModelPolicy.onChooseActivity(this,
-                    choiceIntentCopy);
-            if (handled) {
-                return null;
-            }
-        }
-
-        HistoricalRecord historicalRecord = new HistoricalRecord(chosenName,
-                System.currentTimeMillis(), DEFAULT_HISTORICAL_RECORD_WEIGHT);
-        addHisoricalRecord(historicalRecord);
-
-        return choiceIntent;
-    }
-
-    /**
-     * Sets the listener for choosing an activity.
-     *
-     * @param listener The listener.
-     */
-    public void setOnChooseActivityListener(OnChooseActivityListener listener) {
-        mActivityChoserModelPolicy = listener;
-    }
-
-    /**
-     * Gets the default activity, The default activity is defined as the one
-     * with highest rank i.e. the first one in the list of activities that can
-     * handle the intent.
-     *
-     * @return The default activity, <code>null</code> id not activities.
-     *
-     * @see #getActivity(int)
-     */
-    public ResolveInfo getDefaultActivity() {
-        synchronized (mInstanceLock) {
-            if (!mActivites.isEmpty()) {
-                return mActivites.get(0).resolveInfo;
-            }
-        }
-        return null;
-    }
-
-    /**
-     * Sets the default activity. The default activity is set by adding a
-     * historical record with weight high enough that this activity will
-     * become the highest ranked. Such a strategy guarantees that the default
-     * will eventually change if not used. Also the weight of the record for
-     * setting a default is inflated with a constant amount to guarantee that
-     * it will stay as default for awhile.
-     *
-     * @param index The index of the activity to set as default.
-     */
-    public void setDefaultActivity(int index) {
-        ActivityResolveInfo newDefaultActivity = mActivites.get(index);
-        ActivityResolveInfo oldDefaultActivity = mActivites.get(0);
-
-        final float weight;
-        if (oldDefaultActivity != null) {
-            // Add a record with weight enough to boost the chosen at the top.
-            weight = oldDefaultActivity.weight - newDefaultActivity.weight
-                + DEFAULT_ACTIVITY_INFLATION;
-        } else {
-            weight = DEFAULT_HISTORICAL_RECORD_WEIGHT;
-        }
-
-        ComponentName defaultName = new ComponentName(
-                newDefaultActivity.resolveInfo.activityInfo.packageName,
-                newDefaultActivity.resolveInfo.activityInfo.name);
-        HistoricalRecord historicalRecord = new HistoricalRecord(defaultName,
-                System.currentTimeMillis(), weight);
-        addHisoricalRecord(historicalRecord);
-    }
-
-    /**
-     * Reads the history data from the backing file if the latter
-     * was provided. Calling this method more than once before a call
-     * to {@link #persistHistoricalData()} has been made has no effect.
-     * <p>
-     * <strong>Note:</strong> Historical data is read asynchronously and
-     *       as soon as the reading is completed any registered
-     *       {@link DataSetObserver}s will be notified. Also no historical
-     *       data is read until this method is invoked.
-     * <p>
-     */
-    private void readHistoricalData() {
-        synchronized (mInstanceLock) {
-            if (!mCanReadHistoricalData || !mHistoricalRecordsChanged) {
-                return;
-            }
-            mCanReadHistoricalData = false;
-            mReadShareHistoryCalled = true;
-            if (!TextUtils.isEmpty(mHistoryFileName)) {
-                /*AsyncTask.*/SERIAL_EXECUTOR.execute(new HistoryLoader());
-            }
-        }
-    }
-
-    private static final Executor SERIAL_EXECUTOR = Executors.newSingleThreadExecutor();
-
-    /**
-     * Persists the history data to the backing file if the latter
-     * was provided. Calling this method before a call to {@link #readHistoricalData()}
-     * throws an exception. Calling this method more than one without choosing an
-     * activity has not effect.
-     *
-     * @throws IllegalStateException If this method is called before a call to
-     *         {@link #readHistoricalData()}.
-     */
-    private void persistHistoricalData() {
-        synchronized (mInstanceLock) {
-            if (!mReadShareHistoryCalled) {
-                throw new IllegalStateException("No preceding call to #readHistoricalData");
-            }
-            if (!mHistoricalRecordsChanged) {
-                return;
-            }
-            mHistoricalRecordsChanged = false;
-            mCanReadHistoricalData = true;
-            if (!TextUtils.isEmpty(mHistoryFileName)) {
-                /*AsyncTask.*/SERIAL_EXECUTOR.execute(new HistoryPersister());
-            }
-        }
-    }
-
-    /**
-     * Sets the sorter for ordering activities based on historical data and an intent.
-     *
-     * @param activitySorter The sorter.
-     *
-     * @see ActivitySorter
-     */
-    public void setActivitySorter(ActivitySorter activitySorter) {
-        synchronized (mInstanceLock) {
-            if (mActivitySorter == activitySorter) {
-                return;
-            }
-            mActivitySorter = activitySorter;
-            sortActivities();
-        }
-    }
-
-    /**
-     * Sorts the activities based on history and an intent. If
-     * a sorter is not specified this a default implementation is used.
-     *
-     * @see #setActivitySorter(ActivitySorter)
-     */
-    private void sortActivities() {
-        synchronized (mInstanceLock) {
-            if (mActivitySorter != null && !mActivites.isEmpty()) {
-                mActivitySorter.sort(mIntent, mActivites,
-                        Collections.unmodifiableList(mHistoricalRecords));
-                notifyChanged();
-            }
-        }
-    }
-
-    /**
-     * Sets the maximal size of the historical data. Defaults to
-     * {@link #DEFAULT_HISTORY_MAX_LENGTH}
-     * <p>
-     *   <strong>Note:</strong> Setting this property will immediately
-     *   enforce the specified max history size by dropping enough old
-     *   historical records to enforce the desired size. Thus, any
-     *   records that exceed the history size will be discarded and
-     *   irreversibly lost.
-     * </p>
-     *
-     * @param historyMaxSize The max history size.
-     */
-    public void setHistoryMaxSize(int historyMaxSize) {
-        synchronized (mInstanceLock) {
-            if (mHistoryMaxSize == historyMaxSize) {
-                return;
-            }
-            mHistoryMaxSize = historyMaxSize;
-            pruneExcessiveHistoricalRecordsLocked();
-            sortActivities();
-        }
-    }
-
-    /**
-     * Gets the history max size.
-     *
-     * @return The history max size.
-     */
-    public int getHistoryMaxSize() {
-        synchronized (mInstanceLock) {
-            return mHistoryMaxSize;
-        }
-    }
-
-    /**
-     * Gets the history size.
-     *
-     * @return The history size.
-     */
-    public int getHistorySize() {
-        synchronized (mInstanceLock) {
-            return mHistoricalRecords.size();
-        }
-    }
-
-    /**
-     * Adds a historical record.
-     *
-     * @param historicalRecord The record to add.
-     * @return True if the record was added.
-     */
-    private boolean addHisoricalRecord(HistoricalRecord historicalRecord) {
-        synchronized (mInstanceLock) {
-            final boolean added = mHistoricalRecords.add(historicalRecord);
-            if (added) {
-                mHistoricalRecordsChanged = true;
-                pruneExcessiveHistoricalRecordsLocked();
-                persistHistoricalData();
-                sortActivities();
-            }
-            return added;
-        }
-    }
-
-    /**
-     * Prunes older excessive records to guarantee {@link #mHistoryMaxSize}.
-     */
-    private void pruneExcessiveHistoricalRecordsLocked() {
-        List<HistoricalRecord> choiceRecords = mHistoricalRecords;
-        final int pruneCount = choiceRecords.size() - mHistoryMaxSize;
-        if (pruneCount <= 0) {
-            return;
-        }
-        mHistoricalRecordsChanged = true;
-        for (int i = 0; i < pruneCount; i++) {
-            HistoricalRecord prunedRecord = choiceRecords.remove(0);
-            if (DEBUG) {
-                Log.i(LOG_TAG, "Pruned: " + prunedRecord);
-            }
-        }
-    }
-
-    /**
-     * Loads the activities.
-     */
-    private void loadActivitiesLocked() {
-        mActivites.clear();
-        if (mIntent != null) {
-            List<ResolveInfo> resolveInfos =
-                mContext.getPackageManager().queryIntentActivities(mIntent, 0);
-            final int resolveInfoCount = resolveInfos.size();
-            for (int i = 0; i < resolveInfoCount; i++) {
-                ResolveInfo resolveInfo = resolveInfos.get(i);
-                mActivites.add(new ActivityResolveInfo(resolveInfo));
-            }
-            sortActivities();
-        } else {
-            notifyChanged();
-        }
-    }
-
-    /**
-     * Represents a record in the history.
-     */
-    public final static class HistoricalRecord {
-
-        /**
-         * The activity name.
-         */
-        public final ComponentName activity;
-
-        /**
-         * The choice time.
-         */
-        public final long time;
-
-        /**
-         * The record weight.
-         */
-        public final float weight;
-
-        /**
-         * Creates a new instance.
-         *
-         * @param activityName The activity component name flattened to string.
-         * @param time The time the activity was chosen.
-         * @param weight The weight of the record.
-         */
-        public HistoricalRecord(String activityName, long time, float weight) {
-            this(ComponentName.unflattenFromString(activityName), time, weight);
-        }
-
-        /**
-         * Creates a new instance.
-         *
-         * @param activityName The activity name.
-         * @param time The time the activity was chosen.
-         * @param weight The weight of the record.
-         */
-        public HistoricalRecord(ComponentName activityName, long time, float weight) {
-            this.activity = activityName;
-            this.time = time;
-            this.weight = weight;
-        }
-
-        @Override
-        public int hashCode() {
-            final int prime = 31;
-            int result = 1;
-            result = prime * result + ((activity == null) ? 0 : activity.hashCode());
-            result = prime * result + (int) (time ^ (time >>> 32));
-            result = prime * result + Float.floatToIntBits(weight);
-            return result;
-        }
-
-        @Override
-        public boolean equals(Object obj) {
-            if (this == obj) {
-                return true;
-            }
-            if (obj == null) {
-                return false;
-            }
-            if (getClass() != obj.getClass()) {
-                return false;
-            }
-            HistoricalRecord other = (HistoricalRecord) obj;
-            if (activity == null) {
-                if (other.activity != null) {
-                    return false;
-                }
-            } else if (!activity.equals(other.activity)) {
-                return false;
-            }
-            if (time != other.time) {
-                return false;
-            }
-            if (Float.floatToIntBits(weight) != Float.floatToIntBits(other.weight)) {
-                return false;
-            }
-            return true;
-        }
-
-        @Override
-        public String toString() {
-            StringBuilder builder = new StringBuilder();
-            builder.append("[");
-            builder.append("; activity:").append(activity);
-            builder.append("; time:").append(time);
-            builder.append("; weight:").append(new BigDecimal(weight));
-            builder.append("]");
-            return builder.toString();
-        }
-    }
-
-    /**
-     * Represents an activity.
-     */
-    public final class ActivityResolveInfo implements Comparable<ActivityResolveInfo> {
-
-        /**
-         * The {@link ResolveInfo} of the activity.
-         */
-        public final ResolveInfo resolveInfo;
-
-        /**
-         * Weight of the activity. Useful for sorting.
-         */
-        public float weight;
-
-        /**
-         * Creates a new instance.
-         *
-         * @param resolveInfo activity {@link ResolveInfo}.
-         */
-        public ActivityResolveInfo(ResolveInfo resolveInfo) {
-            this.resolveInfo = resolveInfo;
-        }
-
-        @Override
-        public int hashCode() {
-            return 31 + Float.floatToIntBits(weight);
-        }
-
-        @Override
-        public boolean equals(Object obj) {
-            if (this == obj) {
-                return true;
-            }
-            if (obj == null) {
-                return false;
-            }
-            if (getClass() != obj.getClass()) {
-                return false;
-            }
-            ActivityResolveInfo other = (ActivityResolveInfo) obj;
-            if (Float.floatToIntBits(weight) != Float.floatToIntBits(other.weight)) {
-                return false;
-            }
-            return true;
-        }
-
-        public int compareTo(ActivityResolveInfo another) {
-             return  Float.floatToIntBits(another.weight) - Float.floatToIntBits(weight);
-        }
-
-        @Override
-        public String toString() {
-            StringBuilder builder = new StringBuilder();
-            builder.append("[");
-            builder.append("resolveInfo:").append(resolveInfo.toString());
-            builder.append("; weight:").append(new BigDecimal(weight));
-            builder.append("]");
-            return builder.toString();
-        }
-    }
-
-    /**
-     * Default activity sorter implementation.
-     */
-    private final class DefaultSorter implements ActivitySorter {
-        private static final float WEIGHT_DECAY_COEFFICIENT = 0.95f;
-
-        private final Map<String, ActivityResolveInfo> mPackageNameToActivityMap =
-            new HashMap<String, ActivityResolveInfo>();
-
-        public void sort(Intent intent, List<ActivityResolveInfo> activities,
-                List<HistoricalRecord> historicalRecords) {
-            Map<String, ActivityResolveInfo> packageNameToActivityMap =
-                mPackageNameToActivityMap;
-            packageNameToActivityMap.clear();
-
-            final int activityCount = activities.size();
-            for (int i = 0; i < activityCount; i++) {
-                ActivityResolveInfo activity = activities.get(i);
-                activity.weight = 0.0f;
-                String packageName = activity.resolveInfo.activityInfo.packageName;
-                packageNameToActivityMap.put(packageName, activity);
-            }
-
-            final int lastShareIndex = historicalRecords.size() - 1;
-            float nextRecordWeight = 1;
-            for (int i = lastShareIndex; i >= 0; i--) {
-                HistoricalRecord historicalRecord = historicalRecords.get(i);
-                String packageName = historicalRecord.activity.getPackageName();
-                ActivityResolveInfo activity = packageNameToActivityMap.get(packageName);
-                if (activity != null) {
-                    activity.weight += historicalRecord.weight * nextRecordWeight;
-                    nextRecordWeight = nextRecordWeight * WEIGHT_DECAY_COEFFICIENT;
-                }
-            }
-
-            Collections.sort(activities);
-
-            if (DEBUG) {
-                for (int i = 0; i < activityCount; i++) {
-                    Log.i(LOG_TAG, "Sorted: " + activities.get(i));
-                }
-            }
-        }
-    }
-
-    /**
-     * Command for reading the historical records from a file off the UI thread.
-     */
-    private final class HistoryLoader implements Runnable {
-
-       public void run() {
-            FileInputStream fis = null;
-            try {
-                fis = mContext.openFileInput(mHistoryFileName);
-            } catch (FileNotFoundException fnfe) {
-                if (DEBUG) {
-                    Log.i(LOG_TAG, "Could not open historical records file: " + mHistoryFileName);
-                }
-                return;
-            }
-            try {
-                XmlPullParser parser = Xml.newPullParser();
-                parser.setInput(fis, null);
-
-                int type = XmlPullParser.START_DOCUMENT;
-                while (type != XmlPullParser.END_DOCUMENT && type != XmlPullParser.START_TAG) {
-                    type = parser.next();
-                }
-
-                if (!TAG_HISTORICAL_RECORDS.equals(parser.getName())) {
-                    throw new XmlPullParserException("Share records file does not start with "
-                            + TAG_HISTORICAL_RECORDS + " tag.");
-                }
-
-                List<HistoricalRecord> readRecords = new ArrayList<HistoricalRecord>();
-
-                while (true) {
-                    type = parser.next();
-                    if (type == XmlPullParser.END_DOCUMENT) {
-                        break;
-                    }
-                    if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
-                        continue;
-                    }
-                    String nodeName = parser.getName();
-                    if (!TAG_HISTORICAL_RECORD.equals(nodeName)) {
-                        throw new XmlPullParserException("Share records file not well-formed.");
-                    }
-
-                    String activity = parser.getAttributeValue(null, ATTRIBUTE_ACTIVITY);
-                    final long time =
-                        Long.parseLong(parser.getAttributeValue(null, ATTRIBUTE_TIME));
-                    final float weight =
-                        Float.parseFloat(parser.getAttributeValue(null, ATTRIBUTE_WEIGHT));
-
-                    HistoricalRecord readRecord = new HistoricalRecord(activity, time,
-                            weight);
-                    readRecords.add(readRecord);
-
-                    if (DEBUG) {
-                        Log.i(LOG_TAG, "Read " + readRecord.toString());
-                    }
-                }
-
-                if (DEBUG) {
-                    Log.i(LOG_TAG, "Read " + readRecords.size() + " historical records.");
-                }
-
-                synchronized (mInstanceLock) {
-                    Set<HistoricalRecord> uniqueShareRecords =
-                        new LinkedHashSet<HistoricalRecord>(readRecords);
-
-                    // Make sure no duplicates. Example: Read a file with
-                    // one record, add one record, persist the two records,
-                    // add a record, read the persisted records - the
-                    // read two records should not be added again.
-                    List<HistoricalRecord> historicalRecords = mHistoricalRecords;
-                    final int historicalRecordsCount = historicalRecords.size();
-                    for (int i = historicalRecordsCount - 1; i >= 0; i--) {
-                        HistoricalRecord historicalRecord = historicalRecords.get(i);
-                        uniqueShareRecords.add(historicalRecord);
-                    }
-
-                    if (historicalRecords.size() == uniqueShareRecords.size()) {
-                        return;
-                    }
-
-                    // Make sure the oldest records go to the end.
-                    historicalRecords.clear();
-                    historicalRecords.addAll(uniqueShareRecords);
-
-                    mHistoricalRecordsChanged = true;
-
-                    // Do this on the client thread since the client may be on the UI
-                    // thread, wait for data changes which happen during sorting, and
-                    // perform UI modification based on the data change.
-                    mHandler.post(new Runnable() {
-                        public void run() {
-                            pruneExcessiveHistoricalRecordsLocked();
-                            sortActivities();
-                        }
-                    });
-                }
-            } catch (XmlPullParserException xppe) {
-                Log.e(LOG_TAG, "Error reading historical recrod file: " + mHistoryFileName, xppe);
-            } catch (IOException ioe) {
-                Log.e(LOG_TAG, "Error reading historical recrod file: " + mHistoryFileName, ioe);
-            } finally {
-                if (fis != null) {
-                    try {
-                        fis.close();
-                    } catch (IOException ioe) {
-                        /* ignore */
-                    }
-                }
-            }
-        }
-    }
-
-    /**
-     * Command for persisting the historical records to a file off the UI thread.
-     */
-    private final class HistoryPersister implements Runnable {
-
-        public void run() {
-            FileOutputStream fos = null;
-            List<HistoricalRecord> records = null;
-
-            synchronized (mInstanceLock) {
-                records = new ArrayList<HistoricalRecord>(mHistoricalRecords);
-            }
-
-            try {
-                fos = mContext.openFileOutput(mHistoryFileName, Context.MODE_PRIVATE);
-            } catch (FileNotFoundException fnfe) {
-                Log.e(LOG_TAG, "Error writing historical recrod file: " + mHistoryFileName, fnfe);
-                return;
-            }
-
-            XmlSerializer serializer = Xml.newSerializer();
-
-            try {
-                serializer.setOutput(fos, null);
-                serializer.startDocument("UTF-8", true);
-                serializer.startTag(null, TAG_HISTORICAL_RECORDS);
-
-                final int recordCount = records.size();
-                for (int i = 0; i < recordCount; i++) {
-                    HistoricalRecord record = records.remove(0);
-                    serializer.startTag(null, TAG_HISTORICAL_RECORD);
-                    serializer.attribute(null, ATTRIBUTE_ACTIVITY, record.activity.flattenToString());
-                    serializer.attribute(null, ATTRIBUTE_TIME, String.valueOf(record.time));
-                    serializer.attribute(null, ATTRIBUTE_WEIGHT, String.valueOf(record.weight));
-                    serializer.endTag(null, TAG_HISTORICAL_RECORD);
-                    if (DEBUG) {
-                        Log.i(LOG_TAG, "Wrote " + record.toString());
-                    }
-                }
-
-                serializer.endTag(null, TAG_HISTORICAL_RECORDS);
-                serializer.endDocument();
-
-                if (DEBUG) {
-                    Log.i(LOG_TAG, "Wrote " + recordCount + " historical records.");
-                }
-            } catch (IllegalArgumentException iae) {
-                Log.e(LOG_TAG, "Error writing historical recrod file: " + mHistoryFileName, iae);
-            } catch (IllegalStateException ise) {
-                Log.e(LOG_TAG, "Error writing historical recrod file: " + mHistoryFileName, ise);
-            } catch (IOException ioe) {
-                Log.e(LOG_TAG, "Error writing historical recrod file: " + mHistoryFileName, ioe);
-            } finally {
-                if (fos != null) {
-                    try {
-                        fos.close();
-                    } catch (IOException e) {
-                        /* ignore */
-                    }
-                }
-            }
-        }
-    }
-}