content: /*
   * Copyright (C) 2014 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.android.server.pm;
  
  import com.android.internal.util.XmlUtils;
  
  import org.xmlpull.v1.XmlPullParser;
  import org.xmlpull.v1.XmlPullParserException;
  import org.xmlpull.v1.XmlSerializer;
  
  import android.content.ComponentName;
  import android.content.IntentFilter;
  import android.util.Log;
  
  import java.io.IOException;
  
  class PersistentPreferredActivity extends IntentFilter {
      private static final String ATTR_NAME = "name"; // component name
      private static final String ATTR_FILTER = "filter"; // filter
  
      private static final String TAG = "PersistentPreferredActivity";
  
      private static final boolean DEBUG_FILTERS = false;
  
      final ComponentName mComponent;
  
      PersistentPreferredActivity(IntentFilter filter, ComponentName activity) {
          super(filter);
          mComponent = activity;
      }
  
      PersistentPreferredActivity(XmlPullParser parser) throws XmlPullParserException, IOException {
          String shortComponent = parser.getAttributeValue(null, ATTR_NAME);
          mComponent = ComponentName.unflattenFromString(shortComponent);
          if (mComponent == null) {
              PackageManagerService.reportSettingsProblem(Log.WARN,
                      "Error in package manager settings: " +
                              "Bad activity name " + shortComponent +
                              " at " + parser.getPositionDescription());
          }
          int outerDepth = parser.getDepth();
          String tagName = parser.getName();
          int type;
          while ((type = parser.next()) != XmlPullParser.END_DOCUMENT
                  && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
              tagName = parser.getName();
              if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
                  continue;
              } else if (type == XmlPullParser.START_TAG) {
                  if (tagName.equals(ATTR_FILTER)) {
                      break;
                  } else {
                      PackageManagerService.reportSettingsProblem(Log.WARN,
                              "Unknown element: " + tagName +
                              " at " + parser.getPositionDescription());
                      XmlUtils.skipCurrentTag(parser);
                  }
              }
          }
          if (tagName.equals(ATTR_FILTER)) {
              readFromXml(parser);
          } else {
              PackageManagerService.reportSettingsProblem(Log.WARN,
                      "Missing element filter at " +
                      parser.getPositionDescription());
              XmlUtils.skipCurrentTag(parser);
          }
      }
  
      public void writeToXml(XmlSerializer serializer) throws IOException {
          serializer.attribute(null, ATTR_NAME, mComponent.flattenToShortString());
          serializer.startTag(null, ATTR_FILTER);
              super.writeToXml(serializer);
          serializer.endTag(null, ATTR_FILTER);
      }
  
      @Override
      public String toString() {
          return "PersistentPreferredActivity{0x" + Integer.toHexString(System.identityHashCode(this))
                  + " " + mComponent.flattenToShortString() + "}";
      }
  }
  