forked from mirrors/gecko-dev
49e37dc76e
This patch does not change behavior (other than a minor correctness fix in some off-by-default logging; see below). As shown in the removed line of the init list, this mFrameType member-var's semantics are equivalent to a null-check of the mParent member-var. So: rather than encoding that same information twice, this patch simplifies to just directly null-check the mParent pointer at all the usage sites. Before this patch, nsPrintJob.cpp had two different patterns for logging mFrameType; sometimes with a global `gFrameTypesStr` array, and other times with a local `types` array (with shorter 2-character strings). I've converted both of these to helper-functions. In the case of the `types` array, the old code used a 4-value array, which was interesting since the enum type only had 2 possible values. This discrepancy is just due to an oversight in bug 1769508, where we recently condensed the enum from 4 values to 2; that bug technically should've condensed these arrays as well (but didn't do so). This left these arrays' enum-to-string mapping being wrong (since eIFrame changed its numeric value from 2 to 1 in bug 1769508), but probably nobody has used this logging code in a while, so nobody noticed. Anyway: in this patch, I'm restoring the mappings that we had before that change (so we'll log "DC" for root print objects and "IF" for non-root i.e. iframe-flavored print objects). Differential Revision: https://phabricator.services.mozilla.com/D150177
93 lines
2.8 KiB
C++
93 lines
2.8 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 "nsPrintObject.h"
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#include "nsIContentViewer.h"
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#include "nsContentUtils.h" // for nsAutoScriptBlocker
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsPIDOMWindow.h"
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#include "nsPresContext.h"
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#include "nsGkAtoms.h"
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#include "nsComponentManagerUtils.h"
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#include "nsIBaseWindow.h"
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#include "nsDocShell.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/dom/BrowsingContext.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/Element.h"
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using namespace mozilla;
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using mozilla::dom::BrowsingContext;
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using mozilla::dom::Document;
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using mozilla::dom::Element;
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using mozilla::dom::Selection;
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//---------------------------------------------------
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//-- nsPrintObject Class Impl
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//---------------------------------------------------
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nsPrintObject::nsPrintObject(nsIDocShell& aDocShell, Document& aDoc,
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nsPrintObject* aParent)
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: mDocShell(&aDocShell), mDocument(&aDoc), mParent(aParent) {
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MOZ_COUNT_CTOR(nsPrintObject);
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MOZ_ASSERT(aDoc.IsStaticDocument());
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if (!aParent) {
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// We are a root nsPrintObject.
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// Ensure the document has no presentation.
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DestroyPresentation();
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} else {
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// We are a nested nsPrintObject.
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nsCOMPtr<nsPIDOMWindowOuter> window = aDoc.GetWindow();
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mContent = window->GetFrameElementInternal();
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}
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}
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nsPrintObject::~nsPrintObject() {
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MOZ_COUNT_DTOR(nsPrintObject);
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DestroyPresentation();
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mDocShell = nullptr;
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mTreeOwner = nullptr; // mTreeOwner must be released after mDocShell;
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}
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//------------------------------------------------------------------
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// Resets PO by destroying the presentation
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void nsPrintObject::DestroyPresentation() {
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if (mDocument) {
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if (RefPtr<PresShell> ps = mDocument->GetPresShell()) {
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MOZ_DIAGNOSTIC_ASSERT(!mPresShell || ps == mPresShell);
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mPresShell = nullptr;
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nsAutoScriptBlocker scriptBlocker;
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ps->EndObservingDocument();
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ps->Destroy();
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}
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}
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mPresShell = nullptr;
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mPresContext = nullptr;
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mViewManager = nullptr;
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}
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void nsPrintObject::EnablePrinting(bool aEnable) {
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mPrintingIsEnabled = aEnable;
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for (const UniquePtr<nsPrintObject>& kid : mKids) {
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kid->EnablePrinting(aEnable);
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}
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}
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bool nsPrintObject::HasSelection() const {
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return mDocument && mDocument->GetProperty(nsGkAtoms::printselectionranges);
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}
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void nsPrintObject::EnablePrintingSelectionOnly() {
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mPrintingIsEnabled = HasSelection();
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for (const UniquePtr<nsPrintObject>& kid : mKids) {
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kid->EnablePrintingSelectionOnly();
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}
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}
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