1 files changed, 74 insertions, 0 deletions
diff --git a/layout/base/nsIDocumentViewerPrint.h b/layout/base/nsIDocumentViewerPrint.h
new file mode 100644
index 0000000000..b08b409b36
--- /dev/null
+++ b/layout/base/nsIDocumentViewerPrint.h
@@ -0,0 +1,74 @@
+/* -*- 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/. */
+
+#ifndef nsIDocumentViewerPrint_h___
+#define nsIDocumentViewerPrint_h___
+
+#include "nsISupports.h"
+#include "mozilla/UniquePtr.h"
+
+namespace mozilla {
+class PresShell;
+class ServoStyleSet;
+}  // namespace mozilla
+class nsPresContext;
+class nsViewManager;
+
+// {c6f255cf-cadd-4382-b57f-cd2a9874169b}
+#define NS_IDOCUMENT_VIEWER_PRINT_IID                \
+  {                                                  \
+    0xc6f255cf, 0xcadd, 0x4382, {                    \
+      0xb5, 0x7f, 0xcd, 0x2a, 0x98, 0x74, 0x16, 0x9b \
+    }                                                \
+  }
+
+/**
+ * A DocumentViewerPrint is an INTERNAL Interface used for interaction
+ * between the DocumentViewer and nsPrintJob.
+ */
+class nsIDocumentViewerPrint : public nsISupports {
+ public:
+  NS_DECLARE_STATIC_IID_ACCESSOR(NS_IDOCUMENT_VIEWER_PRINT_IID)
+
+  virtual bool GetIsPrinting() const = 0;
+
+  virtual void SetIsPrintPreview(bool aIsPrintPreview) = 0;
+  virtual bool GetIsPrintPreview() const = 0;
+
+  /**
+   * This is used by nsPagePrintTimer to make nsDocumentViewer::Destroy()
+   * a no-op until printing is finished.  That prevents the nsDocumentViewer
+   * and its document, presshell and prescontext from going away.
+   */
+  virtual void IncrementDestroyBlockedCount() = 0;
+  virtual void DecrementDestroyBlockedCount() = 0;
+
+  virtual void OnDonePrinting() = 0;
+
+  /**
+   * Replaces the current presentation with print preview presentation.
+   */
+  virtual void SetPrintPreviewPresentation(nsViewManager* aViewManager,
+                                           nsPresContext* aPresContext,
+                                           mozilla::PresShell* aPresShell) = 0;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(nsIDocumentViewerPrint,
+                              NS_IDOCUMENT_VIEWER_PRINT_IID)
+
+/* Use this macro when declaring classes that implement this interface. */
+#define NS_DECL_NSIDOCUMENTVIEWERPRINT                          \
+  bool GetIsPrinting() const override;                          \
+  void SetIsPrintPreview(bool aIsPrintPreview) override;        \
+  bool GetIsPrintPreview() const override;                      \
+  void IncrementDestroyBlockedCount() override;                 \
+  void DecrementDestroyBlockedCount() override;                 \
+  void OnDonePrinting() override;                               \
+  void SetPrintPreviewPresentation(nsViewManager* aViewManager, \
+                                   nsPresContext* aPresContext, \
+                                   mozilla::PresShell* aPresShell) override;
+
+#endif /* nsIDocumentViewerPrint_h___ */