1 files changed, 136 insertions, 0 deletions
diff --git a/layout/printing/nsPrintObject.cpp b/layout/printing/nsPrintObject.cpp
new file mode 100644
index 0000000000..ebbde60120
--- /dev/null
+++ b/layout/printing/nsPrintObject.cpp
@@ -0,0 +1,136 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "nsPrintObject.h"
+
+#include "nsIContentViewer.h"
+#include "nsContentUtils.h"  // for nsAutoScriptBlocker
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsPIDOMWindow.h"
+#include "nsPresContext.h"
+#include "nsGkAtoms.h"
+#include "nsComponentManagerUtils.h"
+#include "nsIBaseWindow.h"
+#include "nsDocShell.h"
+
+#include "mozilla/PresShell.h"
+#include "mozilla/dom/BrowsingContext.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/Element.h"
+
+using namespace mozilla;
+using mozilla::dom::BrowsingContext;
+using mozilla::dom::Document;
+using mozilla::dom::Element;
+using mozilla::dom::Selection;
+
+//---------------------------------------------------
+//-- nsPrintObject Class Impl
+//---------------------------------------------------
+nsPrintObject::nsPrintObject()
+    : mContent(nullptr),
+      mFrameType(eFrame),
+      mParent(nullptr),
+      mHasBeenPrinted(false),
+      mInvisible(false),
+      mDidCreateDocShell(false),
+      mShrinkRatio(1.0),
+      mZoomRatio(1.0) {
+  MOZ_COUNT_CTOR(nsPrintObject);
+}
+
+nsPrintObject::~nsPrintObject() {
+  MOZ_COUNT_DTOR(nsPrintObject);
+
+  DestroyPresentation();
+  if (mDidCreateDocShell && mDocShell) {
+    RefPtr<BrowsingContext> bc(mDocShell->GetBrowsingContext());
+    nsDocShell::Cast(mDocShell)->Destroy();
+    bc->Detach();
+  }
+  mDocShell = nullptr;
+  mTreeOwner = nullptr;  // mTreeOwner must be released after mDocShell;
+}
+
+//------------------------------------------------------------------
+
+nsresult nsPrintObject::InitAsRootObject(nsIDocShell* aDocShell, Document* aDoc,
+                                         bool aForPrintPreview) {
+  NS_ENSURE_STATE(aDocShell);
+  NS_ENSURE_STATE(aDoc);
+
+  MOZ_ASSERT(aDoc->IsStaticDocument());
+
+  mDocShell = aDocShell;
+  mDocument = aDoc;
+
+  // Ensure the document has no presentation.
+  DestroyPresentation();
+
+  return NS_OK;
+}
+
+nsresult nsPrintObject::InitAsNestedObject(nsIDocShell* aDocShell,
+                                           Document* aDoc,
+                                           nsPrintObject* aParent) {
+  NS_ENSURE_STATE(aDocShell);
+  NS_ENSURE_STATE(aDoc);
+
+  mParent = aParent;
+  mDocShell = aDocShell;
+  mDocument = aDoc;
+
+  nsCOMPtr<nsPIDOMWindowOuter> window = aDoc->GetWindow();
+  mContent = window->GetFrameElementInternal();
+
+  // "frame" elements not in a frameset context should be treated
+  // as iframes
+  if (mContent->IsHTMLElement(nsGkAtoms::frame) &&
+      mParent->mFrameType == eFrameSet) {
+    mFrameType = eFrame;
+  } else {
+    // Assume something iframe-like, i.e. iframe, object, or embed
+    mFrameType = eIFrame;
+  }
+  return NS_OK;
+}
+
+//------------------------------------------------------------------
+// Resets PO by destroying the presentation
+void nsPrintObject::DestroyPresentation() {
+  if (mDocument) {
+    if (RefPtr<PresShell> ps = mDocument->GetPresShell()) {
+      MOZ_DIAGNOSTIC_ASSERT(!mPresShell || ps == mPresShell);
+      mPresShell = nullptr;
+      nsAutoScriptBlocker scriptBlocker;
+      ps->EndObservingDocument();
+      ps->Destroy();
+    }
+  }
+  mPresShell = nullptr;
+  mPresContext = nullptr;
+  mViewManager = nullptr;
+}
+
+void nsPrintObject::EnablePrinting(bool aEnable) {
+  mPrintingIsEnabled = aEnable;
+
+  for (const UniquePtr<nsPrintObject>& kid : mKids) {
+    kid->EnablePrinting(aEnable);
+  }
+}
+
+bool nsPrintObject::HasSelection() const {
+  return mDocument && mDocument->GetProperty(nsGkAtoms::printselectionranges);
+}
+
+void nsPrintObject::EnablePrintingSelectionOnly() {
+  mPrintingIsEnabled = HasSelection();
+
+  for (const UniquePtr<nsPrintObject>& kid : mKids) {
+    kid->EnablePrintingSelectionOnly();
+  }
+}