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/* 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 "nsIWebBrowserChrome2.idl"
#include "nsIURI.idl"

interface nsIDocShell;
interface nsIInputStream;
interface nsIRunnable;
interface nsIPrincipal;
interface nsIContentSecurityPolicy;
interface nsIReferrerInfo;

webidl Node;

/**
 * nsIWebBrowserChrome3 is an extension to nsIWebBrowserChrome2.
 */
[scriptable, uuid(542b6625-35a9-426a-8257-c12a345383b0)]
interface nsIWebBrowserChrome3 : nsIWebBrowserChrome2
{
  /**
   * Determines the appropriate target for a link.
   *
   * @param originalTarget
   *        The original link target.
   * @param linkURI
   *        Link destination URI.
   * @param aDOMNode
   *        Link DOM node.
   * @param isAppTab
   *        Whether or not the link is in an app tab.
   * @returns A new link target, if appropriate.
   *          Otherwise returns originalTarget.
   */
  AString onBeforeLinkTraversal(in AString originalTarget,
                                in nsIURI linkURI,
                                in Node linkNode,
                                in boolean isAppTab);

  /**
   * Determines whether a load should continue.
   *
   * @param aDocShell
   *        The docshell performing the load.
   * @param aURI
   *        The URI being loaded.
   * @param aReferrerInfo
   *        The referrerInfo of the load.
   * @param aHasPostData
   *        True if the load which is being asked about has associated post data
   *        which would be discarded if the load was redirected across process
   *        boundaries.
   * @param aTriggeringPrincipal
   *        The principal that initiated the load of aURI.
   * @param aCsp
   *        The CSP to be used for that load. That is the CSP that e.g. upgrades
   *        the load to HTTPS in case upgrade-insecure-requests is set.
   */
  bool shouldLoadURI(in nsIDocShell              aDocShell,
                     in nsIURI                   aURI,
                     in nsIReferrerInfo          aReferrerInfo,
                     in boolean                  aHasPostData,
                     in nsIPrincipal             aTriggeringPrincipal,
                     in nsIContentSecurityPolicy aCsp);

  bool shouldLoadURIInThisProcess(in nsIURI aURI);

  /**
   * Attempts to load the currently loaded page into a fresh process to increase
   * available memory.
   *
   * @param aDocShell
   *        The docshell performing the load.
   * @param aCsp
   *        The CSP to be used for reloading the top-level load. That is the CSP
   *        of the document that initially triggered the new document load.
   */
  bool reloadInFreshProcess(in nsIDocShell aDocShell,
                            in nsIURI aURI,
                            in nsIReferrerInfo aReferrerInfo,
                            in nsIPrincipal aTriggeringPrincipal,
                            in uint32_t aLoadFlags,
                            in nsIContentSecurityPolicy aCsp);
};