gecko-dev/dom/interfaces/base/nsITabParent.idl

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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 "domstubs.idl"
interface nsIPrincipal;
[builtinclass, scriptable, uuid(8e49f7b0-1f98-4939-bf91-e9c39cd56434)]
interface nsITabParent : nsISupports
{
void getChildProcessOffset(out int32_t aCssX, out int32_t aCssY);
/**
* Manages the docshell active state of the remote browser. Setting the
* docShell to be active will also cause it to render layers and upload
* them to the compositor. Setting the docShell as not active will clear
* those layers.
*/
attribute boolean docShellIsActive;
/**
* When set to true, this tells the child to paint and upload layers to
* the compositor. When set to false, previous layers are cleared from
* the compositor, but only if preserveLayers is also set to false.
*/
attribute boolean renderLayers;
/**
* True if layers are being rendered and the compositor has reported
* receiving them.
*/
readonly attribute boolean hasLayers;
/**
* Sends a message to the child ensuring that they paint as early as
* possible. This will send the message to paint even if renderLayers
* is already true.
*/
void forceRepaint();
/**
* Adjusts the tab's active state in the process priority manager,
* allowing its process to be given a lower priority.
*/
void deprioritize();
/**
* As an optimisation, setting the docshell's active state to
* inactive also triggers a layer invalidation to free up some
* potentially unhelpful memory usage. Calling preserveLayers
* will cause the layers to be preserved even for inactive
* docshells.
*/
void preserveLayers(in boolean aPreserveLayers);
readonly attribute uint64_t tabId;
/**
* The OS level process Id of the related child process.
*/
readonly attribute int32_t osPid;
readonly attribute boolean hasContentOpener;
/**
* True if we've previously received layers for this tab when switching to
* it.
*/
readonly attribute boolean hasPresented;
/**
* Ensures that the content process which has this tab parent has all of the
* permissions required to load a document with the given principal.
*/
void transmitPermissionsForPrincipal(in nsIPrincipal aPrincipal);
/**
* True if any of the frames loaded in the TabChild have registered
* an onbeforeunload event handler.
*/
readonly attribute boolean hasBeforeUnload;
/**
* Notify APZ to start autoscrolling.
* (aAnchorX, aAnchorY) are the coordinates of the autoscroll anchor,
* in CSS coordinates relative to the screen. aScrollId and
* aPresShellId identify the scroll frame that content chose to scroll.
* Returns whether we were successfully able to notify APZ.
* If this function returns true, APZ (which may live in another process)
* may still reject the autoscroll, but it's then APZ's reponsibility
* to notify content via an "autoscroll-rejected-by-apz" message.
*/
boolean startApzAutoscroll(in float aAnchorX, in float aAnchorY,
in nsViewID aScrollId, in uint32_t aPresShellId);
/**
* Notify APZ to stop autoscrolling.
* aScrollId and aPresShellId identify the scroll frame that is being
* autoscrolled.
*/
void stopApzAutoscroll(in nsViewID aScrollId, in uint32_t aPresShellId);
/**
* Save a recording of the associated content process' behavior to the
* specified filename. Returns whether the process is being recorded.
*/
bool saveRecording(in AString aFileName);
/**
* Asynchronously retrieve a JSON string representing a log of the
* content blocking events happened so far in the current tab from the
* content process.
*
* This returns a Promise which resolves to a string on success, and is
* rejected on failure. For documentation on the string format, please
* see nsISecureBrowserUI.contentBlockingLogJSON.
*/
Promise getContentBlockingLog();
};