forked from mirrors/gecko-dev
a4e300194a
This works, though probably we want to do some follow-up tweaks, like the adding of the onload blocker and so on, so that we can avoid the UpdateDimensions hack. We may also want a PrintObject in the nsPrintJob tree, perhaps... Differential Revision: https://phabricator.services.mozilla.com/D90310
52 lines
1.5 KiB
C++
52 lines
1.5 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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#ifndef mozilla_dom_AutoPrintEventDispatcher_h
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#define mozilla_dom_AutoPrintEventDispatcher_h
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#include "mozilla/dom/Document.h"
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#include "nsContentUtils.h"
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namespace mozilla::dom {
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class AutoPrintEventDispatcher {
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// NOTE(emilio): For fission iframes, we dispatch this event in
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// RecvCloneDocumentTreeIntoSelf.
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static void CollectInProcessSubdocuments(
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Document& aDoc, nsTArray<nsCOMPtr<Document>>& aDocs) {
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aDocs.AppendElement(&aDoc);
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auto recurse = [&aDocs](Document& aSubDoc) {
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CollectInProcessSubdocuments(aSubDoc, aDocs);
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return CallState::Continue;
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};
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aDoc.EnumerateSubDocuments(recurse);
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}
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void DispatchEvent(bool aBefore) {
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for (nsCOMPtr<Document>& doc : mDocuments) {
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nsContentUtils::DispatchTrustedEvent(
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doc, doc->GetWindow(), aBefore ? u"beforeprint"_ns : u"afterprint"_ns,
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CanBubble::eNo, Cancelable::eNo, nullptr);
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}
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}
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public:
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explicit AutoPrintEventDispatcher(Document& aDoc) {
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if (!aDoc.IsStaticDocument()) {
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CollectInProcessSubdocuments(aDoc, mDocuments);
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}
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DispatchEvent(true);
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}
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~AutoPrintEventDispatcher() { DispatchEvent(false); }
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AutoTArray<nsCOMPtr<Document>, 8> mDocuments;
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};
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} // namespace mozilla::dom
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#endif
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