/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

interface nsIRequest;
interface nsIFrame;
interface nsIObjectFrame;
interface nsIPluginTag;
interface nsIDOMElement;
interface nsIDOMClientRect;
interface nsIURI;

%{C++
class nsNPAPIPluginInstance;
%}
[ptr] native nsNPAPIPluginInstancePtr(nsNPAPIPluginInstance);

/**
 * This interface represents a content node that loads objects.
 *
 * Please make sure to update the MozObjectLoadingContent WebIDL
 * interface to mirror this interface when changing it.
 */

[scriptable, uuid(16c14177-52eb-49d3-9842-a1a0b92be11a)]
interface nsIObjectLoadingContent : nsISupports
{
  /**
   * See notes in nsObjectLoadingContent.h
   */
  const unsigned long TYPE_LOADING  = 0;
  const unsigned long TYPE_IMAGE    = 1;
  const unsigned long TYPE_PLUGIN   = 2;
  const unsigned long TYPE_DOCUMENT = 3;
  const unsigned long TYPE_NULL     = 4;

  const unsigned long PLUGIN_ACTIVE               = 0xFF;

  // The content type is not supported (e.g. plugin not installed)
  const unsigned long PLUGIN_UNSUPPORTED          = 0;
  // Showing alternate content
  const unsigned long PLUGIN_ALTERNATE            = 1;
  // The plugin exists, but is disabled
  const unsigned long PLUGIN_DISABLED             = 2;
  // The plugin is blocklisted and disabled
  const unsigned long PLUGIN_BLOCKLISTED          = 3;
  // The plugin is considered outdated, but not disabled
  const unsigned long PLUGIN_OUTDATED             = 4;
  // The plugin has crashed
  const unsigned long PLUGIN_CRASHED              = 5;
  // Suppressed by security policy
  const unsigned long PLUGIN_SUPPRESSED           = 6;
  // Blocked by content policy
  const unsigned long PLUGIN_USER_DISABLED        = 7;
  /// ** All values >= PLUGIN_CLICK_TO_PLAY are plugin placeholder types that
  ///    would be replaced by a real plugin if activated (playPlugin())
  /// ** Furthermore, values >= PLUGIN_CLICK_TO_PLAY and
  ///    <= PLUGIN_VULNERABLE_NO_UPDATE are click-to-play types.
  // The plugin is disabled until the user clicks on it
  const unsigned long PLUGIN_CLICK_TO_PLAY        = 8;
  // The plugin is vulnerable (update available)
  const unsigned long PLUGIN_VULNERABLE_UPDATABLE = 9;
  // The plugin is vulnerable (no update available)
  const unsigned long PLUGIN_VULNERABLE_NO_UPDATE = 10;
  // The plugin is in play preview mode
  const unsigned long PLUGIN_PLAY_PREVIEW         = 11;

  /**
   * The actual mime type (the one we got back from the network
   * request) for the element.
   */
  readonly attribute ACString actualType;

  /**
   * Gets the type of the content that's currently loaded. See
   * the constants above for the list of possible values.
   */
  readonly attribute unsigned long displayedType;

  /**
   * Gets the content type that corresponds to the give MIME type.  See the
   * constants above for the list of possible values.  If nothing else fits,
   * TYPE_NULL will be returned.
   */
  unsigned long getContentTypeForMIMEType(in AUTF8String aMimeType);

  /**
   * Returns the base URI of the object as seen by plugins. This differs from
   * the normal codebase in that it takes <param> tags and plugin-specific
   * quirks into account.
   */
  [noscript] readonly attribute nsIURI baseURI;

  /**
   * Returns the plugin instance if it has already been instantiated. This
   * will never instantiate the plugin and so is safe to call even when
   * content script must not execute.
   */
  [noscript] readonly attribute nsNPAPIPluginInstancePtr pluginInstance;

  /**
   * Tells the content about an associated object frame.
   * This can be called multiple times for different frames.
   *
   * This is noscript because this is an internal method that will go away, and
   * because nsIObjectFrame is unscriptable.
   */
  [noscript] void hasNewFrame(in nsIObjectFrame aFrame);

  /**
   * If this object is in going to be printed, this method
   * returns the nsIObjectFrame object which should be used when
   * printing the plugin. The returned nsIFrame is in the original document,
   * not in the static clone.
   */
  [noscript] nsIFrame getPrintFrame();

  /*
   * Notifications from pluginhost that our instance crashed or was destroyed.
   */
  [noscript] void pluginDestroyed();
  [noscript] void pluginCrashed(in nsIPluginTag pluginTag,
                                in AString pluginDumpID,
                                in AString browserDumpID,
                                in boolean submittedCrashReport);

  /**
   * This method will play a plugin that has been stopped by the
   * click-to-play plugins or play-preview features.
   */
  void playPlugin();

  /**
   * Forces a re-evaluation and reload of the tag, optionally invalidating its
   * click-to-play state.  This can be used when the MIME type that provides a
   * type has changed, for instance, to force the tag to re-evalulate the
   * handler to use.
   */
  void reload(in boolean aClearActivation);

  /**
   * This attribute will return true if the current content type has been
   * activated, either explicitly or by passing checks that would have it be
   * click-to-play or play-preview.
   */
  readonly attribute boolean activated;

  [noscript] void stopPluginInstance();

  [noscript] void syncStartPluginInstance();
  [noscript] void asyncStartPluginInstance();

  /**
   * Puts the tag in the "waiting on a channel" state and adopts this
   * channel. This does not override the normal logic of examining attributes
   * and the channel type, so the load may cancel this channel if it decides not
   * to use one.
   *
   * This assumes:
   *  - This tag has not begun loading yet
   *  - This channel has not yet hit OnStartRequest
   *  - The caller will continue to pass channel events to us as a listener
   */
  [noscript] void initializeFromChannel(in nsIRequest request);

  /**
   * The URL of the data/src loaded in the object. This may be null (i.e.
   * an <embed> with no src).
   */
  readonly attribute nsIURI srcURI;

  /**
   * The plugin's current state of fallback content. This property
   * only makes sense if the plugin is not activated.
   */
  readonly attribute unsigned long pluginFallbackType;

  /**
   * If this object currently owns a running plugin, regardless of whether or
   * not one is pending spawn/despawn.
   */
  readonly attribute bool hasRunningPlugin;

  /**
   * This method will disable the play-preview plugin state.
   */
  void cancelPlayPreview();
};
