PBrowser.ipdl
/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8 -*- */
/* vim: set sw=4 ts=8 et tw=80 ft=cpp : */
/* 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 protocol PBlob;
include protocol PContent;
include protocol PContentDialog;
include protocol PDocumentRenderer;
include protocol PContentPermissionRequest;
include protocol PRenderFrame;
include protocol POfflineCacheUpdate;
include protocol PIndexedDB;
include DOMTypes;
include URIParams;
include "gfxMatrix.h";
include "FrameMetrics.h";
include "IPC/nsGUIEventIPC.h";
include "mozilla/dom/TabMessageUtils.h";
include "mozilla/dom/PermissionMessageUtils.h";
include "mozilla/layout/RenderFrameUtils.h";
using IPC::Principal;
using gfxMatrix;
using gfxRect;
using gfxSize;
using mozilla::layers::LayersBackend;
using mozilla::layers::FrameMetrics;
using mozilla::layout::ScrollingBehavior;
using mozilla::WindowsHandle;
using nscolor;
using nsCompositionEvent;
using nsIMEUpdatePreference;
using nsIntPoint;
using nsIntRect;
using nsIntSize;
using nsKeyEvent;
using nsMouseEvent;
using nsMouseScrollEvent;
using mozilla::widget::WheelEvent;
using nsQueryContentEvent;
using nsRect;
using nsSelectionEvent;
using nsTextEvent;
using nsTouchEvent;
using RemoteDOMEvent;
namespace mozilla {
namespace dom {
rpc protocol PBrowser
{
manager PContent;
manages PContentDialog;
manages PDocumentRenderer;
manages PContentPermissionRequest;
manages PRenderFrame;
manages POfflineCacheUpdate;
manages PIndexedDB;
both:
AsyncMessage(nsString aMessage, ClonedMessageData aData);
parent:
/**
* When child sends this message, parent should move focus to
* the next or previous focusable element.
*/
MoveFocus(bool forward);
Event(RemoteDOMEvent aEvent);
rpc CreateWindow() returns (PBrowser window);
sync SyncMessage(nsString aMessage, ClonedMessageData aData)
returns (nsString[] retval);
/**
* The IME sequence number (seqno) parameter is used to make sure
* that a notification is discarded if it arrives at the chrome process
* too late. If the notification is late and we accept it, we will have
* an out-of-date view of the content process, which means events that we
* dispatch based on this out-of-date view will be wrong also.
* (see Bug 599550 and Bug 591047 comments 44, 50, and 54)
*
* Chrome increments seqno and includes it in each IME event sent to
* content, and content sends its current seqno back to chrome with each
* notification. A notification is up-to-date only if the content
* seqno is the same as the current chrome seqno, meaning no additional
* event was sent to content before the notification was received
*
* On blur, chrome returns the current seqno to content, and content
* uses it to discard subsequent events until the content seqno and
* chrome seqno-on-blur match again. These events, meant for the blurred
* textfield, are discarded to prevent events going to the wrong target
*/
/**
* Notifies chrome that there is a focus change involving an editable
* object (input, textarea, document, contentEditable. etc.)
*
* focus PR_TRUE if editable object is receiving focus
* PR_FALSE if losing focus
* preference Native widget preference for IME updates
* seqno Current seqno value on the chrome side
*/
sync NotifyIMEFocus(bool focus)
returns (nsIMEUpdatePreference preference, uint32_t seqno);
/**
* Notifies chrome that there has been a change in text content
* One call can encompass both a delete and an insert operation
* Only called when NotifyIMEFocus returns PR_TRUE for mWantUpdates
*
* offset Starting offset of the change
* end Ending offset of the range deleted
* newEnd New ending offset after insertion
*
* for insertion, offset == end
* for deletion, offset == newEnd
*/
NotifyIMETextChange(uint32_t offset, uint32_t end, uint32_t newEnd);
/**
* Notifies chrome that there has been a change in selection
* Only called when NotifyIMEFocus returns PR_TRUE for mWantUpdates
*
* seqno Current seqno value on the content side
* anchor Offset where the selection started
* focus Offset where the caret is
*/
NotifyIMESelection(uint32_t seqno, uint32_t anchor, uint32_t focus);
/**
* Notifies chrome to refresh its text cache
* Only called when NotifyIMEFocus returns PR_TRUE for mWantHints
*
* text The entire content of the text field
*/
NotifyIMETextHint(nsString text);
/**
* Instructs chrome to end any pending composition
*
* cancel PR_TRUE if composition should be cancelled
* composition Text to commit before ending the composition
*
* if cancel is PR_TRUE,
* widget should return empty string for composition
* if cancel is PR_FALSE,
* widget should return the current composition text
*/
sync EndIMEComposition(bool cancel) returns (nsString composition);
sync GetInputContext() returns (int32_t IMEEnabled, int32_t IMEOpen);
SetInputContext(int32_t IMEEnabled,
int32_t IMEOpen,
nsString type,
nsString inputmode,
nsString actionHint,
int32_t cause,
int32_t focusChange);
/**
* Gets the DPI of the screen corresponding to this browser.
*/
sync GetDPI() returns (float value);
/**
* Return native data of root widget
*/
sync GetWidgetNativeData() returns (WindowsHandle value);
SetCursor(uint32_t value);
SetBackgroundColor(nscolor color);
/**
* Initiates an asynchronous request for permission for the
* provided principal.
*
* @param aType
* The type of permission to request.
* @param aAccess
* Access type. "read" for example.
* @param aPrincipal
* The principal of the request.
*
* NOTE: The principal is untrusted in the parent process. Only
* principals that can live in the content process should
* provided.
*/
PContentPermissionRequest(nsCString aType, nsCString aAccess, Principal principal);
PContentDialog(uint32_t aType, nsCString aName, nsCString aFeatures,
int32_t[] aIntParams, nsString[] aStringParams);
/**
* Create a layout frame (encapsulating a remote layer tree) for
* the page that is currently loaded in the <browser>.
*/
sync PRenderFrame()
returns (ScrollingBehavior scrolling,
LayersBackend backend, int32_t maxTextureSize, uint64_t layersId);
/**
* Starts an offline application cache update.
* @param manifestURI
* URI of the manifest to fetch, the application cache group ID
* @param documentURI
* URI of the document that referred the manifest
* @param clientID
* The group cache version identifier to use
* @param stickDocument
* True if the update was initiated by a document load that referred
* a manifest.
* False if the update was initiated by applicationCache.update() call.
*
* Tells the update to carry the documentURI to a potential separate
* update of implicit (master) items.
*
* Why this argument? If the document was not found in an offline cache
* before load and refers a manifest and this manifest itself has not
* been changed since the last fetch, we will not do the application
* cache group update. But we must cache the document (identified by the
* documentURI). This argument will ensure that a previously uncached
* document will get cached and that we don't re-cache a document that
* has already been cached (stickDocument=false).
*/
POfflineCacheUpdate(URIParams manifestURI, URIParams documentURI,
bool isInBrowserElement, uint32_t appId,
bool stickDocument);
sync PIndexedDB(nsCString asciiOrigin)
returns (bool allowed);
/**
* window.open from inside <iframe mozbrowser> is special. When the child
* process calls window.open, it creates a new PBrowser (in its own
* process), then calls BrowserFrameOpenWindow on it.
*
* The parent process gets a chance to accept or reject the window.open
* call, and windowOpened is set to true if we ended up going through with
* the window.open.
*
* @param opener the PBrowser whose content called window.open.
*/
sync BrowserFrameOpenWindow(PBrowser opener, nsString aURL,
nsString aName, nsString aFeatures)
returns (bool windowOpened);
/**
* Instructs the TabParent to forward a request to zoom to a rect given in
* CSS pixels. This rect is relative to the document.
*/
ZoomToRect(gfxRect aRect);
/**
* We know for sure that content has either preventDefaulted or not
* preventDefaulted. This applies to an entire batch of touch events. It is
* expected that, if there are any DOM touch listeners, touch events will be
* batched and only processed for panning and zooming if content does not
* preventDefault.
*/
ContentReceivedTouch(bool aPreventDefault);
/**
* Updates any zoom constraints on the parent and anything tied to it. This
* is useful for control logic that resides outside of the remote browser.
*/
UpdateZoomConstraints(bool aAllowZoom, float aMinZoom, float aMaxZoom);
__delete__();
child:
/**
* Notify the remote browser that it has been Show()n on this
* side, with the given |visibleRect|. This message is expected
* to trigger creation of the remote browser's "widget".
*
* |Show()| and |Move()| take IntSizes rather than Rects because
* content processes always render to a virtual <0, 0> top-left
* point.
*/
Show(nsIntSize size);
LoadURL(nsCString uri);
UpdateDimensions(nsRect rect, nsIntSize size) compress;
UpdateFrame(FrameMetrics frame) compress;
/**
* Requests handling of a double tap. |point| is in CSS pixels, relative to
* the scroll offset. This message is expected to round-trip back to
* ZoomToRect() with a rect indicating where we should zoom to.
*/
HandleDoubleTap(nsIntPoint point);
/**
* Requests handling of a single tap. |point| is in CSS pixels, relative to
* the scroll offset. This message is expected to send a "mousedown" and
* "mouseup" series of events at this point.
*/
HandleSingleTap(nsIntPoint point);
/**
* Requests handling of a long tap. |point| is in CSS pixels, relative to
* the scroll offset. This message is expected to send a "contextmenu"
* events at this point.
*/
HandleLongTap(nsIntPoint point);
/**
* Sending an activate message moves focus to the child.
*/
Activate();
Deactivate();
/**
* @see nsIDOMWindowUtils sendMouseEvent.
*/
MouseEvent(nsString aType,
float aX,
float aY,
int32_t aButton,
int32_t aClickCount,
int32_t aModifiers,
bool aIgnoreRootScrollFrame);
RealMouseEvent(nsMouseEvent event);
RealKeyEvent(nsKeyEvent event);
MouseWheelEvent(WheelEvent event);
RealTouchEvent(nsTouchEvent event);
// We use a separate message for touchmove events only to apply
// compression to them.
RealTouchMoveEvent(nsTouchEvent event) compress;
/**
* @see nsIDOMWindowUtils sendKeyEvent.
*/
KeyEvent(nsString aType,
int32_t aKeyCode,
int32_t aCharCode,
int32_t aModifiers,
bool aPreventDefault);
CompositionEvent(nsCompositionEvent event);
TextEvent(nsTextEvent event);
SelectionEvent(nsSelectionEvent event);
/**
* Activate event forwarding from client to parent.
*/
ActivateFrameEvent(nsString aType, bool capture);
LoadRemoteScript(nsString aURL);
/**
* Create a asynchronous request to render whatever document is
* loaded in the child when this message arrives. When the
* request finishes, PDocumentRenderer:__delete__ is sent back to
* this side to notify completion.
*
* |documentRect| is the area of the remote document to draw,
* transformed by |transform|. The rendered area will have the
* default background color |bgcolor|. |renderFlags| are the
* nsIPresShell::RenderDocument() flags to use on the remote side,
* and if true, |flushLayout| will do just that before rendering
* the document. The rendered image will be of size |renderSize|.
*/
PDocumentRenderer(nsRect documentRect, gfxMatrix transform,
nsString bgcolor,
uint32_t renderFlags, bool flushLayout,
nsIntSize renderSize);
/**
* Sent by the chrome process when it no longer wants this remote
* <browser>. The child side cleans up in response, then
* finalizing its death by sending back __delete__() to the
* parent.
*/
Destroy();
/*
* FIXME: write protocol!
state LIVE:
send LoadURL goto LIVE;
//etc.
send Destroy goto DYING;
state DYING:
discard send blah;
// etc.
recv __delete__;
*/
};
}
}
