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.webkit;
  
  import android.net.Uri;
  
  /**
   * This class defines a permission request and is used when web content
   * requests access to protected resources. The permission request related events
   * are delivered via {@link WebChromeClient#onPermissionRequest} and
   * {@link WebChromeClient#onPermissionRequestCanceled}.
   *
   * Either {@link #grant(String[]) grant()} or {@link #deny()} must be called in UI
   * thread to respond to the request.
   *
   * New protected resources whose names are not defined here may be requested in
   * future versions of WebView, even when running on an older Android release. To
   * avoid unintentionally granting requests for new permissions, you should pass the
   * specific permissions you intend to grant to {@link #grant(String[]) grant()},
   * and avoid writing code like this example:
   * <pre class="prettyprint">
   * permissionRequest.grant(permissionRequest.getResources())  // This is wrong!!!
   * </pre>
   * See the WebView's release notes for information about new protected resources.
   */
  public abstract class PermissionRequest {
      /**
       * Resource belongs to video capture device, like camera.
       */
      public final static String RESOURCE_VIDEO_CAPTURE = "android.webkit.resource.VIDEO_CAPTURE";
      /**
       * Resource belongs to audio capture device, like microphone.
       */
      public final static String RESOURCE_AUDIO_CAPTURE = "android.webkit.resource.AUDIO_CAPTURE";
      /**
       * Resource belongs to protected media identifier.
       * After the user grants this resource, the origin can use EME APIs to generate the license
       * requests.
       */
      public final static String RESOURCE_PROTECTED_MEDIA_ID =
              "android.webkit.resource.PROTECTED_MEDIA_ID";
      /**
       * Resource will allow sysex messages to be sent to or received from MIDI devices. These
       * messages are privileged operations, e.g. modifying sound libraries and sampling data, or
       * even updating the MIDI device's firmware.
       *
       * Permission may be requested for this resource in API levels 21 and above, if the Android
       * device has been updated to WebView 45 or above.
       */
      public final static String RESOURCE_MIDI_SYSEX = "android.webkit.resource.MIDI_SYSEX";
  
      /**
       * Call this method to get the origin of the web page which is trying to access
       * the restricted resources.
       *
       * @return the origin of web content which attempt to access the restricted
       *         resources.
       */
      public abstract Uri getOrigin();
  
      /**
       * Call this method to get the resources the web page is trying to access.
       *
       * @return the array of resources the web content wants to access.
       */
      public abstract String[] getResources();
  
      /**
       * Call this method to grant origin the permission to access the given resources.
       * The granted permission is only valid for this WebView.
       *
       * @param resources the resources granted to be accessed by origin, to grant
       *        request, the requested resources returned by {@link #getResources()}
       *        must be equals or a subset of granted resources.
       *        This parameter is designed to avoid granting permission by accident
       *        especially when new resources are requested by web content.
       */
      public abstract void grant(String[] resources);
  
      /**
       * Call this method to deny the request.
       */
      public abstract void deny();
  }
  