зеркало из https://github.com/mozilla/gecko-dev.git
276 строки
10 KiB
C++
276 строки
10 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "BrowserParent.h"
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// BrowserParent.h transitively includes <windows.h>, which does
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// #define CreateEvent CreateEventW
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// That messes up our call to EventDispatcher::CreateEvent below.
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#ifdef CreateEvent
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# undef CreateEvent
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#endif
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#include "BrowserElementParent.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/dom/DocumentInlines.h"
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#include "mozilla/dom/HTMLIFrameElement.h"
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#include "mozilla/dom/ToJSValue.h"
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#include "mozilla/dom/WindowProxyHolder.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsVariant.h"
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#include "mozilla/dom/BrowserElementDictionariesBinding.h"
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#include "mozilla/dom/CustomEvent.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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using namespace mozilla::layers;
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using namespace mozilla::layout;
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namespace {
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using mozilla::BrowserElementParent;
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/**
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* Create an <iframe mozbrowser> owned by the same document as
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* aOpenerFrameElement.
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*/
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already_AddRefed<HTMLIFrameElement> CreateIframe(Element* aOpenerFrameElement,
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const nsAString& aName,
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bool aRemote) {
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nsNodeInfoManager* nodeInfoManager =
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aOpenerFrameElement->OwnerDoc()->NodeInfoManager();
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RefPtr<NodeInfo> nodeInfo = nodeInfoManager->GetNodeInfo(
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nsGkAtoms::iframe,
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/* aPrefix = */ nullptr, kNameSpaceID_XHTML, nsINode::ELEMENT_NODE);
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RefPtr<HTMLIFrameElement> popupFrameElement =
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static_cast<HTMLIFrameElement*>(NS_NewHTMLIFrameElement(
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nodeInfo.forget(), mozilla::dom::NOT_FROM_PARSER));
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popupFrameElement->SetMozbrowser(true);
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// Copy the window name onto the iframe.
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popupFrameElement->SetAttr(kNameSpaceID_None, nsGkAtoms::name, aName,
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/* aNotify = */ false);
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// Indicate whether the iframe is should be remote.
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popupFrameElement->SetAttr(
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kNameSpaceID_None, nsGkAtoms::remote,
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aRemote ? NS_LITERAL_STRING("true") : NS_LITERAL_STRING("false"),
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/* aNotify = */ false);
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// Copy the opener frame's mozprivatebrowsing attribute to the popup frame.
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nsAutoString mozprivatebrowsing;
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if (aOpenerFrameElement->GetAttr(kNameSpaceID_None,
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nsGkAtoms::mozprivatebrowsing,
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mozprivatebrowsing)) {
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popupFrameElement->SetAttr(kNameSpaceID_None, nsGkAtoms::mozprivatebrowsing,
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mozprivatebrowsing, /* aNotify = */ false);
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}
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return popupFrameElement.forget();
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}
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bool DispatchCustomDOMEvent(Element* aFrameElement, const nsAString& aEventName,
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JSContext* cx, JS::Handle<JS::Value> aDetailValue,
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nsEventStatus* aStatus) {
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NS_ENSURE_TRUE(aFrameElement, false);
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RefPtr<nsPresContext> presContext =
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aFrameElement->OwnerDoc()->GetPresContext();
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RefPtr<CustomEvent> event =
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NS_NewDOMCustomEvent(aFrameElement, presContext, nullptr);
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event->InitCustomEvent(cx, aEventName,
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/* aCanBubble = */ true,
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/* aCancelable = */ true, aDetailValue);
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event->SetTrusted(true);
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// Dispatch the event.
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// We don't initialize aStatus here, as our callers have already done so.
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nsresult rv = EventDispatcher::DispatchDOMEvent(aFrameElement, nullptr, event,
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presContext, aStatus);
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return NS_SUCCEEDED(rv);
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}
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} // namespace
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namespace mozilla {
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/**
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* Dispatch a mozbrowseropenwindow event to the given opener frame element.
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* The "popup iframe" (event.detail.frameElement) will be |aPopupFrameElement|.
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*
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* Returns true iff there were no unexpected failures and the window.open call
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* was accepted by the embedder.
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*/
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/*static*/
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BrowserElementParent::OpenWindowResult
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BrowserElementParent::DispatchOpenWindowEvent(Element* aOpenerFrameElement,
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Element* aPopupFrameElement,
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const nsAString& aURL,
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const nsAString& aName,
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bool aForceNoReferrer,
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const nsAString& aFeatures) {
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// Dispatch a CustomEvent at aOpenerFrameElement with a detail object
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// (OpenWindowEventDetail) containing aPopupFrameElement, aURL, aName, and
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// aFeatures.
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// Create the event's detail object.
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OpenWindowEventDetail detail;
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if (aURL.IsEmpty()) {
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// URL should never be empty. Assign about:blank as default.
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detail.mUrl = NS_LITERAL_STRING("about:blank");
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} else {
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detail.mUrl = aURL;
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}
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detail.mName = aName;
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detail.mFeatures = aFeatures;
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detail.mFrameElement = aPopupFrameElement;
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detail.mForceNoReferrer = aForceNoReferrer;
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nsIGlobalObject* sgo = aPopupFrameElement->OwnerDoc()->GetScopeObject();
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if (!sgo) {
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return BrowserElementParent::OPEN_WINDOW_IGNORED;
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}
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AutoJSAPI jsapi;
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if (!jsapi.Init(sgo)) {
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return BrowserElementParent::OPEN_WINDOW_IGNORED;
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}
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JSContext* cx = jsapi.cx();
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JS::Rooted<JS::Value> val(cx);
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JS::Rooted<JSObject*> global(cx, sgo->GetGlobalJSObject());
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JSAutoRealm ar(cx, global);
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if (!ToJSValue(cx, detail, &val)) {
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MOZ_CRASH("Failed to convert dictionary to JS::Value due to OOM.");
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return BrowserElementParent::OPEN_WINDOW_IGNORED;
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}
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nsEventStatus status = nsEventStatus_eIgnore;
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bool dispatchSucceeded = DispatchCustomDOMEvent(
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aOpenerFrameElement, NS_LITERAL_STRING("mozbrowseropenwindow"), cx, val,
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&status);
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if (dispatchSucceeded) {
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if (aPopupFrameElement->IsInComposedDoc()) {
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return BrowserElementParent::OPEN_WINDOW_ADDED;
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}
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if (status == nsEventStatus_eConsumeNoDefault) {
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// If the frame was not added to a document, report to callers whether
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// preventDefault was called on or not
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return BrowserElementParent::OPEN_WINDOW_CANCELLED;
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}
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}
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return BrowserElementParent::OPEN_WINDOW_IGNORED;
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}
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/*static*/
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BrowserElementParent::OpenWindowResult BrowserElementParent::OpenWindowOOP(
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BrowserParent* aOpenerBrowserParent, BrowserParent* aPopupBrowserParent,
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const nsAString& aURL, const nsAString& aName, bool aForceNoReferrer,
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const nsAString& aFeatures) {
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// Create an iframe owned by the same document which owns openerFrameElement.
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nsCOMPtr<Element> openerFrameElement =
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aOpenerBrowserParent->GetOwnerElement();
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NS_ENSURE_TRUE(openerFrameElement, BrowserElementParent::OPEN_WINDOW_IGNORED);
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RefPtr<HTMLIFrameElement> popupFrameElement =
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CreateIframe(openerFrameElement, aName, /* aRemote = */ true);
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// Normally an <iframe> element will try to create a frameLoader when the
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// page touches iframe.contentWindow or sets iframe.src.
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//
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// But in our case, we want to delay the creation of the frameLoader until
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// we've verified that the popup has gone through successfully. If the popup
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// is "blocked" by the embedder, we don't want to load the popup's url.
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//
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// Therefore we call DisallowCreateFrameLoader() on the element and call
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// AllowCreateFrameLoader() only after we've verified that the popup was
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// allowed.
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popupFrameElement->DisallowCreateFrameLoader();
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OpenWindowResult opened =
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DispatchOpenWindowEvent(openerFrameElement, popupFrameElement, aURL,
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aName, aForceNoReferrer, aFeatures);
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if (opened != BrowserElementParent::OPEN_WINDOW_ADDED) {
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return opened;
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}
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// The popup was not blocked, so hook up the frame element and the popup tab
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// parent, and return success.
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aPopupBrowserParent->SetOwnerElement(popupFrameElement);
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popupFrameElement->AllowCreateFrameLoader();
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popupFrameElement->CreateRemoteFrameLoader(aPopupBrowserParent);
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return opened;
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}
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/* static */
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BrowserElementParent::OpenWindowResult
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BrowserElementParent::OpenWindowInProcess(BrowsingContext* aOpenerWindow,
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nsIURI* aURI, const nsAString& aName,
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const nsACString& aFeatures,
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bool aForceNoOpener,
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BrowsingContext** aReturnBC) {
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*aReturnBC = nullptr;
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// If we call window.open from an <iframe> inside an <iframe mozbrowser>,
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// it's as though the top-level document inside the <iframe mozbrowser>
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// called window.open. (Indeed, in the OOP case, the inner <iframe> lives
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// out-of-process, so we couldn't touch it if we tried.)
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//
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// GetInProcessScriptableTop gets us the <iframe mozbrowser>'s window; we'll
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// use its frame element, rather than aOpenerWindow's frame element, as our
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// "opener frame element" below.
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nsCOMPtr<nsPIDOMWindowOuter> win =
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aOpenerWindow->GetDOMWindow()->GetInProcessScriptableTop();
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nsCOMPtr<Element> openerFrameElement = win->GetFrameElementInternal();
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NS_ENSURE_TRUE(openerFrameElement, BrowserElementParent::OPEN_WINDOW_IGNORED);
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RefPtr<HTMLIFrameElement> popupFrameElement =
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CreateIframe(openerFrameElement, aName, /* aRemote = */ false);
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NS_ENSURE_TRUE(popupFrameElement, BrowserElementParent::OPEN_WINDOW_IGNORED);
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nsAutoCString spec;
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if (aURI) {
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aURI->GetSpec(spec);
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}
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if (!aForceNoOpener) {
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ErrorResult res;
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popupFrameElement->PresetOpenerWindow(WindowProxyHolder(aOpenerWindow),
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res);
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MOZ_ASSERT(!res.Failed());
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}
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OpenWindowResult opened = DispatchOpenWindowEvent(
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openerFrameElement, popupFrameElement, NS_ConvertUTF8toUTF16(spec), aName,
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false, NS_ConvertUTF8toUTF16(aFeatures));
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if (opened != BrowserElementParent::OPEN_WINDOW_ADDED) {
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return opened;
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}
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// Return popupFrameElement's window.
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RefPtr<nsFrameLoader> frameLoader = popupFrameElement->GetFrameLoader();
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NS_ENSURE_TRUE(frameLoader, BrowserElementParent::OPEN_WINDOW_IGNORED);
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nsCOMPtr<nsIDocShell> docshell = frameLoader->GetDocShell(IgnoreErrors());
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NS_ENSURE_TRUE(docshell, BrowserElementParent::OPEN_WINDOW_IGNORED);
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docshell->GetBrowsingContextXPCOM(aReturnBC);
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return *aReturnBC ? opened : BrowserElementParent::OPEN_WINDOW_CANCELLED;
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}
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} // namespace mozilla
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