Adding api to get DOM document interface through web widget.

webshell/public/nsIWebWidget.h

@@ -20,6 +20,7 @@
 
 #include "nsweb.h"
 #include "nsIDocumentWidget.h"
+class nsIDOMDocument;
 class nsILinkHandler;
 class nsIPresContext;
 class nsIStyleSet;
@@ -72,8 +73,11 @@ public:
 
   virtual PRBool GetShowFrameBorders() = 0;
 
-  virtual nsresult GetScriptContext(nsIScriptContext **aContext) = 0;
-  virtual nsresult ReleaseScriptContext() = 0;
+  NS_IMETHOD GetScriptContext(nsIScriptContext **aContext) = 0;
+
+  NS_IMETHOD GetDOMDocument(nsIDOMDocument** aDocument) = 0;
+                                                
+  NS_IMETHOD ReleaseScriptContext() = 0;
 
 };
 

webshell/src/nsWebWidget.cpp

@@ -38,6 +38,7 @@
 #include "nsIScriptContext.h"
 #include "nsIScriptObjectOwner.h"
 #include "nsICSSParser.h"
+#include "nsIDOMDocument.h"
 
 #include "prprf.h"
 #include "prtime.h"
@@ -93,8 +94,9 @@ public:
   virtual void ShowFrameBorders(PRBool aEnable);
   virtual PRBool GetShowFrameBorders();
   virtual nsIWidget* GetWWWindow();
-  virtual nsresult GetScriptContext(nsIScriptContext **aContext);
-  virtual nsresult ReleaseScriptContext();
+  NS_IMETHOD GetScriptContext(nsIScriptContext **aContext);
+  NS_IMETHOD GetDOMDocument(nsIDOMDocument** aDocument);
+  NS_IMETHOD ReleaseScriptContext();
 
   NS_IMETHOD GetScriptObject(JSContext *aContext, void** aScriptObject);
   NS_IMETHOD ResetScriptObject();
@@ -703,6 +705,21 @@ nsresult WebWidgetImpl::GetScriptContext(nsIScriptContext **aContext)
   return res;
 }
 
+nsresult WebWidgetImpl::GetDOMDocument(nsIDOMDocument** aDocument)
+{
+  nsIDocument *doc = GetDocument();
+  *aDocument = nsnull;
+
+  static NS_DEFINE_IID(kIDOMDocumentIID, NS_IDOMDOCUMENT_IID);
+   
+  if (doc != nsnull) {
+    return doc->QueryInterface(kIDOMDocumentIID, (void**)aDocument);
+    NS_RELEASE(doc);
+  }
+
+  return NS_OK; 
+}
+
 nsresult WebWidgetImpl::ResetScriptObject()
 {
   mScriptObject = nsnull;