Bug 487667 - Clone documents for printing, r=roc+jst+joe+dbaron

layout/base/nsIDocumentViewerPrint.h

@@ -41,10 +41,15 @@
 
 class nsIDocument;
 class nsStyleSet;
+class nsIPresShell;
+class nsPresContext;
+class nsIWidget;
+class nsIViewManager;
 
-// {D0B7F354-D575-43fd-903D-5AA35A193EDA}
+// {c6f255cf-cadd-4382-b57f-cd2a9874169b}
 #define NS_IDOCUMENT_VIEWER_PRINT_IID \
- { 0xd0b7f354, 0xd575, 0x43fd, { 0x90, 0x3d, 0x5a, 0xa3, 0x5a, 0x19, 0x3e, 0xda } }
+{ 0xc6f255cf, 0xcadd, 0x4382, \
+  { 0xb5, 0x7f, 0xcd, 0x2a, 0x98, 0x74, 0x16, 0x9b } }
 
 /**
  * A DocumentViewerPrint is an INTERNAL Interface used for interaction
@@ -72,6 +77,23 @@ public:
 
   virtual void OnDonePrinting() = 0;
 
+  /**
+   * Returns PR_TRUE is InitializeForPrintPreview() has been called.
+   */
+  virtual PRBool IsInitializedForPrintPreview() = 0;
+
+  /**
+   * Marks this viewer to be used for print preview.
+   */
+  virtual void InitializeForPrintPreview() = 0;
+
+  /**
+   * Replaces the current presentation with print preview presentation.
+   */
+  virtual void SetPrintPreviewPresentation(nsIWidget* aWidget,
+                                           nsIViewManager* aViewManager,
+                                           nsPresContext* aPresContext,
+                                           nsIPresShell* aPresShell) = 0;
 };
 
 NS_DEFINE_STATIC_IID_ACCESSOR(nsIDocumentViewerPrint,
@@ -86,6 +108,12 @@ NS_DEFINE_STATIC_IID_ACCESSOR(nsIDocumentViewerPrint,
   virtual nsresult CreateStyleSet(nsIDocument* aDocument, nsStyleSet** aStyleSet); \
   virtual void     IncrementDestroyRefCount(); \
   virtual void     ReturnToGalleyPresentation(); \
-  virtual void     OnDonePrinting();
+  virtual void     OnDonePrinting(); \
+  virtual PRBool   IsInitializedForPrintPreview(); \
+  virtual void     InitializeForPrintPreview(); \
+  virtual void     SetPrintPreviewPresentation(nsIWidget* aWidget, \
+                                               nsIViewManager* aViewManager, \
+                                               nsPresContext* aPresContext, \
+                                               nsIPresShell* aPresShell);
 
 #endif /* nsIDocumentViewerPrint_h___ */