/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3;
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import android.appwidget.AppWidgetHost;
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import android.content.ComponentName;
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import android.content.ContentValues;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.ActivityInfo;
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import android.content.pm.PackageManager;
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import android.content.res.Resources;
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import android.database.sqlite.SQLiteDatabase;
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import android.graphics.drawable.Drawable;
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import android.net.Uri;
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import android.os.Build.VERSION;
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import android.os.Bundle;
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import android.os.Process;
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import android.text.TextUtils;
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import android.util.ArrayMap;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.util.Pair;
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import android.util.Patterns;
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import android.util.Xml;
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import com.android.launcher3.LauncherProvider.SqlArguments;
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import com.android.launcher3.LauncherSettings.Favorites;
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import com.android.launcher3.icons.GraphicsUtils;
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import com.android.launcher3.icons.LauncherIcons;
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import com.android.launcher3.util.IntArray;
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import com.android.launcher3.util.Thunk;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserException;
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import java.io.IOException;
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import java.util.Locale;
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import java.util.function.Supplier;
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/**
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* Layout parsing code for auto installs layout
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*/
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public class AutoInstallsLayout {
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private static final String TAG = "AutoInstalls";
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private static final boolean LOGD = false;
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/** Marker action used to discover a package which defines launcher customization */
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static final String ACTION_LAUNCHER_CUSTOMIZATION =
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"android.autoinstalls.config.action.PLAY_AUTO_INSTALL";
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/**
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* Layout resource which also includes grid size and hotseat count, e.g., default_layout_6x6_h5
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*/
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private static final String FORMATTED_LAYOUT_RES_WITH_HOSTEAT = "default_layout_%dx%d_h%s";
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private static final String FORMATTED_LAYOUT_RES = "default_layout_%dx%d";
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private static final String LAYOUT_RES = "default_layout";
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static AutoInstallsLayout get(Context context, AppWidgetHost appWidgetHost,
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LayoutParserCallback callback) {
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Pair<String, Resources> customizationApkInfo = Utilities.findSystemApk(
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ACTION_LAUNCHER_CUSTOMIZATION, context.getPackageManager());
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if (customizationApkInfo == null) {
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return null;
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}
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String pkg = customizationApkInfo.first;
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Resources targetRes = customizationApkInfo.second;
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InvariantDeviceProfile grid = LauncherAppState.getIDP(context);
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// Try with grid size and hotseat count
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String layoutName = String.format(Locale.ENGLISH, FORMATTED_LAYOUT_RES_WITH_HOSTEAT,
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grid.numColumns, grid.numRows, grid.numHotseatIcons);
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int layoutId = targetRes.getIdentifier(layoutName, "xml", pkg);
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// Try with only grid size
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if (layoutId == 0) {
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Log.d(TAG, "Formatted layout: " + layoutName
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+ " not found. Trying layout without hosteat");
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layoutName = String.format(Locale.ENGLISH, FORMATTED_LAYOUT_RES,
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grid.numColumns, grid.numRows);
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layoutId = targetRes.getIdentifier(layoutName, "xml", pkg);
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}
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// Try the default layout
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if (layoutId == 0) {
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Log.d(TAG, "Formatted layout: " + layoutName + " not found. Trying the default layout");
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layoutId = targetRes.getIdentifier(LAYOUT_RES, "xml", pkg);
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}
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if (layoutId == 0) {
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Log.e(TAG, "Layout definition not found in package: " + pkg);
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return null;
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}
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return new AutoInstallsLayout(context, appWidgetHost, callback, targetRes, layoutId,
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TAG_WORKSPACE);
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}
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// Object Tags
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private static final String TAG_INCLUDE = "include";
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public static final String TAG_WORKSPACE = "workspace";
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private static final String TAG_APP_ICON = "appicon";
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private static final String TAG_AUTO_INSTALL = "autoinstall";
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private static final String TAG_FOLDER = "folder";
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private static final String TAG_APPWIDGET = "appwidget";
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private static final String TAG_SHORTCUT = "shortcut";
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private static final String TAG_EXTRA = "extra";
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private static final String ATTR_CONTAINER = "container";
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private static final String ATTR_RANK = "rank";
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private static final String ATTR_PACKAGE_NAME = "packageName";
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private static final String ATTR_CLASS_NAME = "className";
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private static final String ATTR_TITLE = "title";
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private static final String ATTR_SCREEN = "screen";
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// x and y can be specified as negative integers, in which case -1 represents the
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// last row / column, -2 represents the second last, and so on.
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private static final String ATTR_X = "x";
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private static final String ATTR_Y = "y";
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private static final String ATTR_SPAN_X = "spanX";
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private static final String ATTR_SPAN_Y = "spanY";
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private static final String ATTR_ICON = "icon";
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private static final String ATTR_URL = "url";
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// Attrs for "Include"
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private static final String ATTR_WORKSPACE = "workspace";
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// Style attrs -- "Extra"
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private static final String ATTR_KEY = "key";
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private static final String ATTR_VALUE = "value";
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private static final String HOTSEAT_CONTAINER_NAME =
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Favorites.containerToString(Favorites.CONTAINER_HOTSEAT);
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@Thunk final Context mContext;
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@Thunk final AppWidgetHost mAppWidgetHost;
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protected final LayoutParserCallback mCallback;
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protected final PackageManager mPackageManager;
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protected final Resources mSourceRes;
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protected final Supplier<XmlPullParser> mInitialLayoutSupplier;
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private final InvariantDeviceProfile mIdp;
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private final int mRowCount;
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private final int mColumnCount;
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private final int[] mTemp = new int[2];
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@Thunk final ContentValues mValues;
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protected final String mRootTag;
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protected SQLiteDatabase mDb;
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public AutoInstallsLayout(Context context, AppWidgetHost appWidgetHost,
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LayoutParserCallback callback, Resources res,
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int layoutId, String rootTag) {
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this(context, appWidgetHost, callback, res, () -> res.getXml(layoutId), rootTag);
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}
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public AutoInstallsLayout(Context context, AppWidgetHost appWidgetHost,
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LayoutParserCallback callback, Resources res,
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Supplier<XmlPullParser> initialLayoutSupplier, String rootTag) {
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mContext = context;
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mAppWidgetHost = appWidgetHost;
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mCallback = callback;
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mPackageManager = context.getPackageManager();
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mValues = new ContentValues();
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mRootTag = rootTag;
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mSourceRes = res;
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mInitialLayoutSupplier = initialLayoutSupplier;
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mIdp = LauncherAppState.getIDP(context);
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mRowCount = mIdp.numRows;
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mColumnCount = mIdp.numColumns;
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}
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/**
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* Loads the layout in the db and returns the number of entries added on the desktop.
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*/
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public int loadLayout(SQLiteDatabase db, IntArray screenIds) {
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mDb = db;
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try {
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return parseLayout(mInitialLayoutSupplier.get(), screenIds);
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} catch (Exception e) {
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Log.e(TAG, "Error parsing layout: ", e);
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return -1;
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}
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}
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/**
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* Parses the layout and returns the number of elements added on the homescreen.
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*/
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protected int parseLayout(XmlPullParser parser, IntArray screenIds)
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throws XmlPullParserException, IOException {
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beginDocument(parser, mRootTag);
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final int depth = parser.getDepth();
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int type;
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ArrayMap<String, TagParser> tagParserMap = getLayoutElementsMap();
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int count = 0;
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while (((type = parser.next()) != XmlPullParser.END_TAG ||
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parser.getDepth() > depth) && type != XmlPullParser.END_DOCUMENT) {
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if (type != XmlPullParser.START_TAG) {
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continue;
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}
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count += parseAndAddNode(parser, tagParserMap, screenIds);
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}
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return count;
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}
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/**
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* Parses container and screenId attribute from the current tag, and puts it in the out.
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* @param out array of size 2.
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*/
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protected void parseContainerAndScreen(XmlPullParser parser, int[] out) {
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if (HOTSEAT_CONTAINER_NAME.equals(getAttributeValue(parser, ATTR_CONTAINER))) {
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out[0] = Favorites.CONTAINER_HOTSEAT;
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// Hack: hotseat items are stored using screen ids
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out[1] = Integer.parseInt(getAttributeValue(parser, ATTR_RANK));
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} else {
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out[0] = Favorites.CONTAINER_DESKTOP;
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out[1] = Integer.parseInt(getAttributeValue(parser, ATTR_SCREEN));
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}
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}
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/**
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* Parses the current node and returns the number of elements added.
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*/
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protected int parseAndAddNode(
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XmlPullParser parser, ArrayMap<String, TagParser> tagParserMap, IntArray screenIds)
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throws XmlPullParserException, IOException {
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if (TAG_INCLUDE.equals(parser.getName())) {
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final int resId = getAttributeResourceValue(parser, ATTR_WORKSPACE, 0);
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if (resId != 0) {
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// recursively load some more favorites, why not?
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return parseLayout(mSourceRes.getXml(resId), screenIds);
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} else {
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return 0;
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}
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}
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mValues.clear();
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parseContainerAndScreen(parser, mTemp);
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final int container = mTemp[0];
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final int screenId = mTemp[1];
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mValues.put(Favorites.CONTAINER, container);
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mValues.put(Favorites.SCREEN, screenId);
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mValues.put(Favorites.CELLX,
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convertToDistanceFromEnd(getAttributeValue(parser, ATTR_X), mColumnCount));
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mValues.put(Favorites.CELLY,
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convertToDistanceFromEnd(getAttributeValue(parser, ATTR_Y), mRowCount));
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TagParser tagParser = tagParserMap.get(parser.getName());
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if (tagParser == null) {
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if (LOGD) Log.d(TAG, "Ignoring unknown element tag: " + parser.getName());
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return 0;
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}
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int newElementId = tagParser.parseAndAdd(parser);
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if (newElementId >= 0) {
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// Keep track of the set of screens which need to be added to the db.
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if (!screenIds.contains(screenId) &&
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container == Favorites.CONTAINER_DESKTOP) {
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screenIds.add(screenId);
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}
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return 1;
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}
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return 0;
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}
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protected int addShortcut(String title, Intent intent, int type) {
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int id = mCallback.generateNewItemId();
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mValues.put(Favorites.INTENT, intent.toUri(0));
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mValues.put(Favorites.TITLE, title);
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mValues.put(Favorites.ITEM_TYPE, type);
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mValues.put(Favorites.SPANX, 1);
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mValues.put(Favorites.SPANY, 1);
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mValues.put(Favorites._ID, id);
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if (mCallback.insertAndCheck(mDb, mValues) < 0) {
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return -1;
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} else {
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return id;
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}
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}
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protected ArrayMap<String, TagParser> getFolderElementsMap() {
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ArrayMap<String, TagParser> parsers = new ArrayMap<>();
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parsers.put(TAG_APP_ICON, new AppShortcutParser());
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parsers.put(TAG_AUTO_INSTALL, new AutoInstallParser());
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parsers.put(TAG_SHORTCUT, new ShortcutParser(mSourceRes));
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return parsers;
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}
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protected ArrayMap<String, TagParser> getLayoutElementsMap() {
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ArrayMap<String, TagParser> parsers = new ArrayMap<>();
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parsers.put(TAG_APP_ICON, new AppShortcutParser());
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parsers.put(TAG_AUTO_INSTALL, new AutoInstallParser());
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parsers.put(TAG_FOLDER, new FolderParser());
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parsers.put(TAG_APPWIDGET, new PendingWidgetParser());
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parsers.put(TAG_SHORTCUT, new ShortcutParser(mSourceRes));
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return parsers;
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}
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protected interface TagParser {
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/**
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* Parses the tag and adds to the db
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* @return the id of the row added or -1;
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*/
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int parseAndAdd(XmlPullParser parser)
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throws XmlPullParserException, IOException;
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}
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/**
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* App shortcuts: required attributes packageName and className
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*/
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protected class AppShortcutParser implements TagParser {
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@Override
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public int parseAndAdd(XmlPullParser parser) {
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final String packageName = getAttributeValue(parser, ATTR_PACKAGE_NAME);
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final String className = getAttributeValue(parser, ATTR_CLASS_NAME);
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if (!TextUtils.isEmpty(packageName) && !TextUtils.isEmpty(className)) {
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ActivityInfo info;
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try {
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ComponentName cn;
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try {
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cn = new ComponentName(packageName, className);
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info = mPackageManager.getActivityInfo(cn, 0);
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} catch (PackageManager.NameNotFoundException nnfe) {
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String[] packages = mPackageManager.currentToCanonicalPackageNames(
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new String[] { packageName });
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cn = new ComponentName(packages[0], className);
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info = mPackageManager.getActivityInfo(cn, 0);
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}
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final Intent intent = new Intent(Intent.ACTION_MAIN, null)
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.addCategory(Intent.CATEGORY_LAUNCHER)
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.setComponent(cn)
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.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
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Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
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return addShortcut(info.loadLabel(mPackageManager).toString(),
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intent, Favorites.ITEM_TYPE_APPLICATION);
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} catch (PackageManager.NameNotFoundException e) {
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Log.e(TAG, "Favorite not found: " + packageName + "/" + className);
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}
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return -1;
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} else {
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return invalidPackageOrClass(parser);
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}
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}
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/**
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* Helper method to allow extending the parser capabilities
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*/
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protected int invalidPackageOrClass(XmlPullParser parser) {
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Log.w(TAG, "Skipping invalid <favorite> with no component");
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return -1;
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}
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}
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/**
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* AutoInstall: required attributes packageName and className
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*/
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protected class AutoInstallParser implements TagParser {
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@Override
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public int parseAndAdd(XmlPullParser parser) {
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final String packageName = getAttributeValue(parser, ATTR_PACKAGE_NAME);
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final String className = getAttributeValue(parser, ATTR_CLASS_NAME);
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if (TextUtils.isEmpty(packageName) || TextUtils.isEmpty(className)) {
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if (LOGD) Log.d(TAG, "Skipping invalid <favorite> with no component");
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return -1;
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}
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mValues.put(Favorites.RESTORED, WorkspaceItemInfo.FLAG_AUTOINSTALL_ICON);
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final Intent intent = new Intent(Intent.ACTION_MAIN, null)
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.addCategory(Intent.CATEGORY_LAUNCHER)
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.setComponent(new ComponentName(packageName, className))
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.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
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Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
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return addShortcut(mContext.getString(R.string.package_state_unknown), intent,
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Favorites.ITEM_TYPE_APPLICATION);
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}
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}
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/**
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* Parses a web shortcut. Required attributes url, icon, title
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*/
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protected class ShortcutParser implements TagParser {
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private final Resources mIconRes;
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public ShortcutParser(Resources iconRes) {
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mIconRes = iconRes;
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}
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@Override
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public int parseAndAdd(XmlPullParser parser) {
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final int titleResId = getAttributeResourceValue(parser, ATTR_TITLE, 0);
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final int iconId = getAttributeResourceValue(parser, ATTR_ICON, 0);
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if (titleResId == 0 || iconId == 0) {
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if (LOGD) Log.d(TAG, "Ignoring shortcut");
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return -1;
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}
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final Intent intent = parseIntent(parser);
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if (intent == null) {
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return -1;
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}
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Drawable icon = mIconRes.getDrawable(iconId);
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if (icon == null) {
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if (LOGD) Log.d(TAG, "Ignoring shortcut, can't load icon");
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return -1;
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}
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// Auto installs should always support the current platform version.
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LauncherIcons li = LauncherIcons.obtain(mContext);
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mValues.put(LauncherSettings.Favorites.ICON, GraphicsUtils.flattenBitmap(
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li.createBadgedIconBitmap(icon, Process.myUserHandle(), VERSION.SDK_INT).icon));
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li.recycle();
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mValues.put(Favorites.ICON_PACKAGE, mIconRes.getResourcePackageName(iconId));
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mValues.put(Favorites.ICON_RESOURCE, mIconRes.getResourceName(iconId));
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intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
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Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
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return addShortcut(mSourceRes.getString(titleResId),
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intent, Favorites.ITEM_TYPE_SHORTCUT);
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}
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protected Intent parseIntent(XmlPullParser parser) {
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final String url = getAttributeValue(parser, ATTR_URL);
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if (TextUtils.isEmpty(url) || !Patterns.WEB_URL.matcher(url).matches()) {
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if (LOGD) Log.d(TAG, "Ignoring shortcut, invalid url: " + url);
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return null;
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}
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return new Intent(Intent.ACTION_VIEW, null).setData(Uri.parse(url));
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}
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}
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/**
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* AppWidget parser: Required attributes packageName, className, spanX and spanY.
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* Options child nodes: <extra key=... value=... />
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* It adds a pending widget which allows the widget to come later. If there are extras, those
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* are passed to widget options during bind.
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* The config activity for the widget (if present) is not shown, so any optional configurations
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* should be passed as extras and the widget should support reading these widget options.
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*/
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protected class PendingWidgetParser implements TagParser {
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@Override
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public int parseAndAdd(XmlPullParser parser)
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throws XmlPullParserException, IOException {
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final String packageName = getAttributeValue(parser, ATTR_PACKAGE_NAME);
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final String className = getAttributeValue(parser, ATTR_CLASS_NAME);
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if (TextUtils.isEmpty(packageName) || TextUtils.isEmpty(className)) {
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if (LOGD) Log.d(TAG, "Skipping invalid <appwidget> with no component");
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return -1;
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}
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mValues.put(Favorites.SPANX, getAttributeValue(parser, ATTR_SPAN_X));
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mValues.put(Favorites.SPANY, getAttributeValue(parser, ATTR_SPAN_Y));
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mValues.put(Favorites.ITEM_TYPE, Favorites.ITEM_TYPE_APPWIDGET);
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// Read the extras
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Bundle extras = new Bundle();
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int widgetDepth = parser.getDepth();
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int type;
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while ((type = parser.next()) != XmlPullParser.END_TAG ||
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parser.getDepth() > widgetDepth) {
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if (type != XmlPullParser.START_TAG) {
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continue;
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}
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if (TAG_EXTRA.equals(parser.getName())) {
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String key = getAttributeValue(parser, ATTR_KEY);
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String value = getAttributeValue(parser, ATTR_VALUE);
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if (key != null && value != null) {
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extras.putString(key, value);
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} else {
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throw new RuntimeException("Widget extras must have a key and value");
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}
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} else {
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throw new RuntimeException("Widgets can contain only extras");
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}
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}
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return verifyAndInsert(new ComponentName(packageName, className), extras);
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}
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protected int verifyAndInsert(ComponentName cn, Bundle extras) {
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mValues.put(Favorites.APPWIDGET_PROVIDER, cn.flattenToString());
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mValues.put(Favorites.RESTORED,
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LauncherAppWidgetInfo.FLAG_ID_NOT_VALID |
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LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY |
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LauncherAppWidgetInfo.FLAG_DIRECT_CONFIG);
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mValues.put(Favorites._ID, mCallback.generateNewItemId());
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if (!extras.isEmpty()) {
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mValues.put(Favorites.INTENT, new Intent().putExtras(extras).toUri(0));
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}
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int insertedId = mCallback.insertAndCheck(mDb, mValues);
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if (insertedId < 0) {
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return -1;
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} else {
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return insertedId;
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}
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}
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}
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protected class FolderParser implements TagParser {
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private final ArrayMap<String, TagParser> mFolderElements;
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public FolderParser() {
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this(getFolderElementsMap());
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}
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public FolderParser(ArrayMap<String, TagParser> elements) {
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mFolderElements = elements;
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}
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@Override
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public int parseAndAdd(XmlPullParser parser)
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throws XmlPullParserException, IOException {
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final String title;
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final int titleResId = getAttributeResourceValue(parser, ATTR_TITLE, 0);
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if (titleResId != 0) {
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title = mSourceRes.getString(titleResId);
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} else {
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title = mContext.getResources().getString(R.string.folder_name);
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}
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mValues.put(Favorites.TITLE, title);
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mValues.put(Favorites.ITEM_TYPE, Favorites.ITEM_TYPE_FOLDER);
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mValues.put(Favorites.SPANX, 1);
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mValues.put(Favorites.SPANY, 1);
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mValues.put(Favorites._ID, mCallback.generateNewItemId());
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int folderId = mCallback.insertAndCheck(mDb, mValues);
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if (folderId < 0) {
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if (LOGD) Log.e(TAG, "Unable to add folder");
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return -1;
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}
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final ContentValues myValues = new ContentValues(mValues);
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IntArray folderItems = new IntArray();
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int type;
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int folderDepth = parser.getDepth();
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int rank = 0;
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while ((type = parser.next()) != XmlPullParser.END_TAG ||
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parser.getDepth() > folderDepth) {
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if (type != XmlPullParser.START_TAG) {
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continue;
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}
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mValues.clear();
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mValues.put(Favorites.CONTAINER, folderId);
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mValues.put(Favorites.RANK, rank);
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TagParser tagParser = mFolderElements.get(parser.getName());
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if (tagParser != null) {
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final int id = tagParser.parseAndAdd(parser);
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if (id >= 0) {
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folderItems.add(id);
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rank++;
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}
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} else {
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throw new RuntimeException("Invalid folder item " + parser.getName());
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}
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}
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int addedId = folderId;
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// We can only have folders with >= 2 items, so we need to remove the
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// folder and clean up if less than 2 items were included, or some
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// failed to add, and less than 2 were actually added
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if (folderItems.size() < 2) {
|
// Delete the folder
|
Uri uri = Favorites.getContentUri(folderId);
|
SqlArguments args = new SqlArguments(uri, null, null);
|
mDb.delete(args.table, args.where, args.args);
|
addedId = -1;
|
|
// If we have a single item, promote it to where the folder
|
// would have been.
|
if (folderItems.size() == 1) {
|
final ContentValues childValues = new ContentValues();
|
copyInteger(myValues, childValues, Favorites.CONTAINER);
|
copyInteger(myValues, childValues, Favorites.SCREEN);
|
copyInteger(myValues, childValues, Favorites.CELLX);
|
copyInteger(myValues, childValues, Favorites.CELLY);
|
|
addedId = folderItems.get(0);
|
mDb.update(Favorites.TABLE_NAME, childValues,
|
Favorites._ID + "=" + addedId, null);
|
}
|
}
|
return addedId;
|
}
|
}
|
|
protected static void beginDocument(XmlPullParser parser, String firstElementName)
|
throws XmlPullParserException, IOException {
|
int type;
|
while ((type = parser.next()) != XmlPullParser.START_TAG
|
&& type != XmlPullParser.END_DOCUMENT);
|
|
if (type != XmlPullParser.START_TAG) {
|
throw new XmlPullParserException("No start tag found");
|
}
|
|
if (!parser.getName().equals(firstElementName)) {
|
throw new XmlPullParserException("Unexpected start tag: found " + parser.getName() +
|
", expected " + firstElementName);
|
}
|
}
|
|
private static String convertToDistanceFromEnd(String value, int endValue) {
|
if (!TextUtils.isEmpty(value)) {
|
int x = Integer.parseInt(value);
|
if (x < 0) {
|
return Integer.toString(endValue + x);
|
}
|
}
|
return value;
|
}
|
|
/**
|
* Return attribute value, attempting launcher-specific namespace first
|
* before falling back to anonymous attribute.
|
*/
|
protected static String getAttributeValue(XmlPullParser parser, String attribute) {
|
String value = parser.getAttributeValue(
|
"http://schemas.android.com/apk/res-auto/com.android.launcher3", attribute);
|
if (value == null) {
|
value = parser.getAttributeValue(null, attribute);
|
}
|
return value;
|
}
|
|
/**
|
* Return attribute resource value, attempting launcher-specific namespace
|
* first before falling back to anonymous attribute.
|
*/
|
protected static int getAttributeResourceValue(XmlPullParser parser, String attribute,
|
int defaultValue) {
|
AttributeSet attrs = Xml.asAttributeSet(parser);
|
int value = attrs.getAttributeResourceValue(
|
"http://schemas.android.com/apk/res-auto/com.android.launcher3", attribute,
|
defaultValue);
|
if (value == defaultValue) {
|
value = attrs.getAttributeResourceValue(null, attribute, defaultValue);
|
}
|
return value;
|
}
|
|
public interface LayoutParserCallback {
|
int generateNewItemId();
|
|
int insertAndCheck(SQLiteDatabase db, ContentValues values);
|
}
|
|
@Thunk static void copyInteger(ContentValues from, ContentValues to, String key) {
|
to.put(key, from.getAsInteger(key));
|
}
|
}
|
