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 android.support.provider;
  
  import android.content.Context;
  import android.net.Uri;
  
  class TreeDocumentFile extends DocumentFile {
      private Context mContext;
      private Uri mUri;
  
      TreeDocumentFile(DocumentFile parent, Context context, Uri uri) {
          super(parent);
          mContext = context;
          mUri = uri;
      }
  
      @Override
      public DocumentFile createFile(String mimeType, String displayName) {
          final Uri result = DocumentsContractApi21.createFile(mContext, mUri, mimeType, displayName);
          return (result != null) ? new TreeDocumentFile(this, mContext, result) : null;
      }
  
      @Override
      public DocumentFile createDirectory(String displayName) {
          final Uri result = DocumentsContractApi21.createDirectory(mContext, mUri, displayName);
          return (result != null) ? new TreeDocumentFile(this, mContext, result) : null;
      }
  
      @Override
      public Uri getUri() {
          return mUri;
      }
  
      @Override
      public String getName() {
          return DocumentsContractApi19.getName(mContext, mUri);
      }
  
      @Override
      public String getType() {
          return DocumentsContractApi19.getType(mContext, mUri);
      }
  
      @Override
      public boolean isDirectory() {
          return DocumentsContractApi19.isDirectory(mContext, mUri);
      }
  
      @Override
      public boolean isFile() {
          return DocumentsContractApi19.isFile(mContext, mUri);
      }
  
      @Override
      public boolean isVirtual() {
          return DocumentsContractApi19.isVirtual(mContext, mUri);
      }
  
      @Override
      public long lastModified() {
          return DocumentsContractApi19.lastModified(mContext, mUri);
      }
  
      @Override
      public long length() {
          return DocumentsContractApi19.length(mContext, mUri);
      }
  
      @Override
      public boolean canRead() {
          return DocumentsContractApi19.canRead(mContext, mUri);
      }
  
      @Override
      public boolean canWrite() {
          return DocumentsContractApi19.canWrite(mContext, mUri);
      }
  
      @Override
      public boolean delete() {
          return DocumentsContractApi19.delete(mContext, mUri);
      }
  
      @Override
      public boolean exists() {
          return DocumentsContractApi19.exists(mContext, mUri);
      }
  
      @Override
      public DocumentFile[] listFiles() {
          final Uri[] result = DocumentsContractApi21.listFiles(mContext, mUri);
          final DocumentFile[] resultFiles = new DocumentFile[result.length];
          for (int i = 0; i < result.length; i++) {
              resultFiles[i] = new TreeDocumentFile(this, mContext, result[i]);
          }
          return resultFiles;
      }
  
      @Override
      public boolean renameTo(String displayName) {
          final Uri result = DocumentsContractApi21.renameTo(mContext, mUri, displayName);
          if (result != null) {
              mUri = result;
              return true;
          } else {
              return false;
          }
      }
  }
  