зеркало из https://github.com/mozilla/gecko-dev.git
137 строки
3.8 KiB
C++
137 строки
3.8 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()
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: mContent(nullptr),
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mFrameType(eFrame),
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mParent(nullptr),
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mHasBeenPrinted(false),
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mInvisible(false),
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mDidCreateDocShell(false),
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mShrinkRatio(1.0),
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mZoomRatio(1.0) {
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MOZ_COUNT_CTOR(nsPrintObject);
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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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if (mDidCreateDocShell && mDocShell) {
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RefPtr<BrowsingContext> bc(mDocShell->GetBrowsingContext());
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nsDocShell::Cast(mDocShell)->Destroy();
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bc->Detach();
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}
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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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nsresult nsPrintObject::InitAsRootObject(nsIDocShell* aDocShell, Document* aDoc,
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bool aForPrintPreview) {
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NS_ENSURE_STATE(aDocShell);
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NS_ENSURE_STATE(aDoc);
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MOZ_ASSERT(aDoc->IsStaticDocument());
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mDocShell = aDocShell;
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mDocument = aDoc;
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// Ensure the document has no presentation.
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DestroyPresentation();
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return NS_OK;
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}
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nsresult nsPrintObject::InitAsNestedObject(nsIDocShell* aDocShell,
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Document* aDoc,
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nsPrintObject* aParent) {
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NS_ENSURE_STATE(aDocShell);
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NS_ENSURE_STATE(aDoc);
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mParent = aParent;
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mDocShell = aDocShell;
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mDocument = aDoc;
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nsCOMPtr<nsPIDOMWindowOuter> window = aDoc->GetWindow();
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mContent = window->GetFrameElementInternal();
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// "frame" elements not in a frameset context should be treated
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// as iframes
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if (mContent->IsHTMLElement(nsGkAtoms::frame) &&
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mParent->mFrameType == eFrameSet) {
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mFrameType = eFrame;
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} else {
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// Assume something iframe-like, i.e. iframe, object, or embed
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mFrameType = eIFrame;
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}
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return NS_OK;
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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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