layout/printing/nsPrintPreviewListener.h

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  38
  39 #ifndef nsPrintPreviewListener_h__
  40 #define nsPrintPreviewListener_h__
  41
  42 // Interfaces needed to be included
  43 #include "nsIDOMEventListener.h"
  44 #include "nsIDOMEventTarget.h"
  45 // Helper Classes
  46 #include "nsCOMPtr.h"
  47
  48 //
  49 // class nsPrintPreviewListener
  50 //
  51 // The class that listens to the chrome events and tells the embedding
  52 // chrome to show context menus, as appropriate. Handles registering itself
  53 // with the DOM with AddChromeListeners() and removing itself with
  54 // RemoveChromeListeners().
  55 //
  56 class nsPrintPreviewListener : public nsIDOMEventListener
  57
  58 {
  59 public:
  60   NS_DECL_ISUPPORTS
  61   NS_DECL_NSIDOMEVENTLISTENER
  62
  63   nsPrintPreviewListener(nsIDOMEventTarget* aTarget);
  64
  65   // Add/remove the relevant listeners, based on what interfaces
  66   // the embedding chrome implements.
  67   nsresult AddListeners();
  68   nsresult RemoveListeners();
  69
  70 private:
  71
  72   nsCOMPtr<nsIDOMEventTarget> mEventTarget;
  73
  74 }; // class nsPrintPreviewListener
  75
  76
  77
  78 #endif /* nsPrintPreviewListener_h__ */