content: /*
   * Copyright (C) 2008 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.lb.launcher;
  
  import android.content.ComponentName;
  import android.content.Context;
  import com.lb.launcher.compat.LauncherActivityInfoCompat;
  import com.lb.launcher.compat.LauncherAppsCompat;
  import com.lb.launcher.compat.UserHandleCompat;
  import java.util.ArrayList;
  import java.util.List;
  
  
  /**
   * Stores the list of all applications for the all apps view.
   */
  class AllAppsList {
      public static final int DEFAULT_APPLICATIONS_NUMBER = 42;
  
      /** The list off all apps. */
      public ArrayList<AppInfo> data =
              new ArrayList<AppInfo>(DEFAULT_APPLICATIONS_NUMBER);
      /** The list of apps that have been added since the last notify() call. */
      public ArrayList<AppInfo> added =
              new ArrayList<AppInfo>(DEFAULT_APPLICATIONS_NUMBER);
      /** The list of apps that have been removed since the last notify() call. */
      public ArrayList<AppInfo> removed = new ArrayList<AppInfo>();
      /** The list of apps that have been modified since the last notify() call. */
      public ArrayList<AppInfo> modified = new ArrayList<AppInfo>();
  
      private IconCache mIconCache;
  
      private AppFilter mAppFilter;
  
      /**
       * Boring constructor.
       */
      public AllAppsList(IconCache iconCache, AppFilter appFilter) {
          mIconCache = iconCache;
          mAppFilter = appFilter;
      }
  
      /**
       * Add the supplied ApplicationInfo objects to the list, and enqueue it into the
       * list to broadcast when notify() is called.
       *
       * If the app is already in the list, doesn't add it.
       */
      public void add(AppInfo info) {
          if (mAppFilter != null && !mAppFilter.shouldShowApp(info.componentName)) {
              return;
          }
          if (findActivity(data, info.componentName, info.user)) {
              return;
          }
          data.add(info);
          added.add(info);
      }
  
      public void clear() {
          data.clear();
          // TODO: do we clear these too?
          added.clear();
          removed.clear();
          modified.clear();
      }
  
      public int size() {
          return data.size();
      }
  
      public AppInfo get(int index) {
          return data.get(index);
      }
  
      /**
       * Add the icons for the supplied apk called packageName.
       */
      public void addPackage(Context context, String packageName, UserHandleCompat user) {
          final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(context);
          final List<LauncherActivityInfoCompat> matches = launcherApps.getActivityList(packageName,
                  user);
  
          for (LauncherActivityInfoCompat info : matches) {
              add(new AppInfo(context, info, user, mIconCache, null));
          }
      }
  
      /**
       * Remove the apps for the given apk identified by packageName.
       */
      public void removePackage(String packageName, UserHandleCompat user, boolean clearCache) {
          final List<AppInfo> data = this.data;
          for (int i = data.size() - 1; i >= 0; i--) {
              AppInfo info = data.get(i);
              final ComponentName component = info.intent.getComponent();
              if (info.user.equals(user) && packageName.equals(component.getPackageName())) {
                  removed.add(info);
                  data.remove(i);
              }
          }
          if (clearCache) {
              mIconCache.remove(packageName, user);
          }
      }
  
      /**
       * Add and remove icons for this package which has been updated.
       */
      public void updatePackage(Context context, String packageName, UserHandleCompat user) {
          final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(context);
          final List<LauncherActivityInfoCompat> matches = launcherApps.getActivityList(packageName,
                  user);
          if (matches.size() > 0) {
              // Find disabled/removed activities and remove them from data and add them
              // to the removed list.
              for (int i = data.size() - 1; i >= 0; i--) {
                  final AppInfo applicationInfo = data.get(i);
                  final ComponentName component = applicationInfo.intent.getComponent();
                  if (user.equals(applicationInfo.user)
                          && packageName.equals(component.getPackageName())) {
                      if (!findActivity(matches, component)) {
                          removed.add(applicationInfo);
                          mIconCache.remove(component, user);
                          data.remove(i);
                      }
                  }
              }
  
              // Find enabled activities and add them to the adapter
              // Also updates existing activities with new labels/icons
              for (final LauncherActivityInfoCompat info : matches) {
                  AppInfo applicationInfo = findApplicationInfoLocked(
                          info.getComponentName().getPackageName(), user,
                          info.getComponentName().getClassName());
                  if (applicationInfo == null) {
                      add(new AppInfo(context, info, user, mIconCache, null));
                  } else {
                      mIconCache.remove(applicationInfo.componentName, user);
                      mIconCache.getTitleAndIcon(applicationInfo, info, null);
                      modified.add(applicationInfo);
                  }
              }
          } else {
              // Remove all data for this package.
              for (int i = data.size() - 1; i >= 0; i--) {
                  final AppInfo applicationInfo = data.get(i);
                  final ComponentName component = applicationInfo.intent.getComponent();
                  if (user.equals(applicationInfo.user)
                          && packageName.equals(component.getPackageName())) {
                      removed.add(applicationInfo);
                      mIconCache.remove(component, user);
                      data.remove(i);
                  }
              }
          }
      }
  
  
      /**
       * Returns whether <em>apps</em> contains <em>component</em>.
       */
      private static boolean findActivity(List<LauncherActivityInfoCompat> apps,
              ComponentName component) {
          for (LauncherActivityInfoCompat info : apps) {
              if (info.getComponentName().equals(component)) {
                  return true;
              }
          }
          return false;
      }
  
      /**
       * Query the launcher apps service for whether the supplied package has
       * MAIN/LAUNCHER activities in the supplied package.
       */
      static boolean packageHasActivities(Context context, String packageName,
              UserHandleCompat user) {
          final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(context);
          return launcherApps.getActivityList(packageName, user).size() > 0;
      }
  
      /**
       * Returns whether <em>apps</em> contains <em>component</em>.
       */
      private static boolean findActivity(ArrayList<AppInfo> apps, ComponentName component,
              UserHandleCompat user) {
          final int N = apps.size();
          for (int i = 0; i < N; i++) {
              final AppInfo info = apps.get(i);
              if (info.user.equals(user) && info.componentName.equals(component)) {
                  return true;
              }
          }
          return false;
      }
  
      /**
       * Find an ApplicationInfo object for the given packageName and className.
       */
      private AppInfo findApplicationInfoLocked(String packageName, UserHandleCompat user,
              String className) {
          for (AppInfo info: data) {
              final ComponentName component = info.intent.getComponent();
              if (user.equals(info.user) && packageName.equals(component.getPackageName())
                      && className.equals(component.getClassName())) {
                  return info;
              }
          }
          return null;
      }
  }
  