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-rw-r--r--layout/printing/nsPrintObject.cpp113
1 files changed, 113 insertions, 0 deletions
diff --git a/layout/printing/nsPrintObject.cpp b/layout/printing/nsPrintObject.cpp
new file mode 100644
index 000000000..9165374c2
--- /dev/null
+++ b/layout/printing/nsPrintObject.cpp
@@ -0,0 +1,113 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "nsIDOMDocument.h"
+#include "nsContentUtils.h" // for nsAutoScriptBlocker
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsPIDOMWindow.h"
+#include "nsGkAtoms.h"
+#include "nsComponentManagerUtils.h"
+#include "nsIDocShellTreeItem.h"
+#include "nsIBaseWindow.h"
+#include "nsIDocument.h"
+
+//---------------------------------------------------
+//-- nsPrintObject Class Impl
+//---------------------------------------------------
+nsPrintObject::nsPrintObject() :
+ mContent(nullptr), mFrameType(eFrame), mParent(nullptr),
+ mHasBeenPrinted(false), mDontPrint(true), mPrintAsIs(false),
+ mInvisible(false), mDidCreateDocShell(false),
+ mShrinkRatio(1.0), mZoomRatio(1.0)
+{
+ MOZ_COUNT_CTOR(nsPrintObject);
+}
+
+
+nsPrintObject::~nsPrintObject()
+{
+ MOZ_COUNT_DTOR(nsPrintObject);
+ for (uint32_t i=0;i<mKids.Length();i++) {
+ nsPrintObject* po = mKids[i];
+ delete po;
+ }
+
+ DestroyPresentation();
+ if (mDidCreateDocShell && mDocShell) {
+ nsCOMPtr<nsIBaseWindow> baseWin(do_QueryInterface(mDocShell));
+ if (baseWin) {
+ baseWin->Destroy();
+ }
+ }
+ mDocShell = nullptr;
+ mTreeOwner = nullptr; // mTreeOwner must be released after mDocShell;
+}
+
+//------------------------------------------------------------------
+nsresult
+nsPrintObject::Init(nsIDocShell* aDocShell, nsIDOMDocument* aDoc,
+ bool aPrintPreview)
+{
+ mPrintPreview = aPrintPreview;
+
+ if (mPrintPreview || mParent) {
+ mDocShell = aDocShell;
+ } else {
+ mTreeOwner = do_GetInterface(aDocShell);
+ // Create a container docshell for printing.
+ mDocShell = do_CreateInstance("@mozilla.org/docshell;1");
+ NS_ENSURE_TRUE(mDocShell, NS_ERROR_OUT_OF_MEMORY);
+ mDidCreateDocShell = true;
+ mDocShell->SetItemType(aDocShell->ItemType());
+ mDocShell->SetTreeOwner(mTreeOwner);
+ }
+ NS_ENSURE_TRUE(mDocShell, NS_ERROR_FAILURE);
+
+ // Keep the document related to this docshell alive
+ nsCOMPtr<nsIDOMDocument> dummy = do_GetInterface(mDocShell);
+ mozilla::Unused << dummy;
+
+ nsCOMPtr<nsIContentViewer> viewer;
+ mDocShell->GetContentViewer(getter_AddRefs(viewer));
+ NS_ENSURE_STATE(viewer);
+
+ nsCOMPtr<nsIDocument> doc = do_QueryInterface(aDoc);
+ NS_ENSURE_STATE(doc);
+
+ if (mParent) {
+ nsCOMPtr<nsPIDOMWindowOuter> window = doc->GetWindow();
+ if (window) {
+ mContent = window->GetFrameElementInternal();
+ }
+ mDocument = doc;
+ return NS_OK;
+ }
+
+ mDocument = doc->CreateStaticClone(mDocShell);
+ nsCOMPtr<nsIDOMDocument> clonedDOMDoc = do_QueryInterface(mDocument);
+ NS_ENSURE_STATE(clonedDOMDoc);
+
+ viewer->SetDOMDocument(clonedDOMDoc);
+ return NS_OK;
+}
+
+//------------------------------------------------------------------
+// Resets PO by destroying the presentation
+void
+nsPrintObject::DestroyPresentation()
+{
+ if (mPresShell) {
+ mPresShell->EndObservingDocument();
+ nsAutoScriptBlocker scriptBlocker;
+ nsCOMPtr<nsIPresShell> shell = mPresShell;
+ mPresShell = nullptr;
+ shell->Destroy();
+ }
+ mPresContext = nullptr;
+ mViewManager = nullptr;
+}
+