From 8e03e4e94b3262235d877672405fce3079df219f Mon Sep 17 00:00:00 2001
From: "peterlubczynski%netscape.com"
 <peterlubczynski%netscape.com@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Sat, 5 Oct 2002 02:57:21 +0000
Subject: [PATCH] Fixing bug 169513, Add the means to obtain the DOM from a
 plugin r=adamlock sr=beard

git-svn-id: svn://10.0.0.236/trunk@131221 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/modules/plugin/base/public/npapi.h    |  7 +-
 .../modules/plugin/base/src/ns4xPlugin.cpp    | 74 +++++++++++++++++++
 2 files changed, 79 insertions(+), 2 deletions(-)

diff --git a/mozilla/modules/plugin/base/public/npapi.h b/mozilla/modules/plugin/base/public/npapi.h
index 05179551407..4c97aa4ae5b 100644
--- a/mozilla/modules/plugin/base/public/npapi.h
+++ b/mozilla/modules/plugin/base/public/npapi.h
@@ -38,7 +38,7 @@
 
 
 /*
- *  npapi.h $Revision: 3.23 $
+ *  npapi.h $Revision: 3.24 $
  *  Netscape client plug-in API spec
  */
 
@@ -353,7 +353,10 @@ typedef enum {
   NPNVisOfflineBool,
 
   /* 10 and over are available on Mozilla builds starting with 0.9.4 */
-  NPNVserviceManager = 10
+  NPNVserviceManager = 10,
+  NPNVDOMElement     = 11,   /* available in Mozilla 1.2 */
+  NPNVDOMDocument    = 12,
+  NPNVDOMWindow      = 13
 } NPNVariable;
 
 /*
diff --git a/mozilla/modules/plugin/base/src/ns4xPlugin.cpp b/mozilla/modules/plugin/base/src/ns4xPlugin.cpp
index 170b77dd06b..3a2dc4d904d 100644
--- a/mozilla/modules/plugin/base/src/ns4xPlugin.cpp
+++ b/mozilla/modules/plugin/base/src/ns4xPlugin.cpp
@@ -53,6 +53,13 @@
 #include "nsIPluginInstancePeer2.h"
 #include "nsIJSContextStack.h"
 
+#include "nsPIPluginInstancePeer.h"
+#include "nsIDOMElement.h"
+#include "nsIDOMDocument.h"
+#include "nsIDOMWindow.h"
+#include "nsIDocument.h"
+#include "nsIScriptGlobalObject.h"
+
 #ifdef XP_MAC
 #include <Resources.h>
 #endif
@@ -1211,6 +1218,73 @@ _getvalue(NPP npp, NPNVariable variable, void *result)
       return NPERR_GENERIC_ERROR;
   }
 
+  case NPNVDOMElement: {
+    ns4xPluginInstance *inst = (ns4xPluginInstance *) npp->ndata;
+    NS_ENSURE_TRUE(inst, NPERR_GENERIC_ERROR);
+
+    nsCOMPtr<nsIPluginInstancePeer> pip;
+    inst->GetPeer(getter_AddRefs(pip));
+    nsCOMPtr<nsIPluginTagInfo2> pti2 (do_QueryInterface(pip));
+    if (pti2) {
+      nsCOMPtr<nsIDOMElement> e;
+      pti2->GetDOMElement(getter_AddRefs(e));
+      if (e) {
+        NS_ADDREF(*(nsIDOMElement**)result = e.get());
+        return NPERR_NO_ERROR;
+      }
+    }
+    return NPERR_GENERIC_ERROR;
+  }
+
+  case NPNVDOMDocument: {
+    ns4xPluginInstance *inst = (ns4xPluginInstance *) npp->ndata;
+    NS_ENSURE_TRUE(inst, NPERR_GENERIC_ERROR);
+
+    nsCOMPtr<nsIPluginInstancePeer> pip;
+    inst->GetPeer(getter_AddRefs(pip));
+    nsCOMPtr<nsPIPluginInstancePeer> pp (do_QueryInterface(pip));
+    if (pp) {
+      nsCOMPtr<nsIPluginInstanceOwner> owner;
+      pp->GetOwner(getter_AddRefs(owner));
+      if (owner) {
+        nsCOMPtr<nsIDocument> doc;
+        owner->GetDocument(getter_AddRefs(doc));
+        nsCOMPtr<nsIDOMDocument> domDoc (do_QueryInterface(doc));
+        if (domDoc) {
+          NS_ADDREF(*(nsIDOMDocument**)result = domDoc.get());
+          return NPERR_NO_ERROR;
+        }
+      }
+    }
+    return NPERR_GENERIC_ERROR;
+  }
+
+  case NPNVDOMWindow: {
+    ns4xPluginInstance *inst = (ns4xPluginInstance *) npp->ndata;
+    NS_ENSURE_TRUE(inst, NPERR_GENERIC_ERROR);
+
+    nsCOMPtr<nsIPluginInstancePeer> pip;
+    inst->GetPeer(getter_AddRefs(pip));
+    nsCOMPtr<nsPIPluginInstancePeer> pp (do_QueryInterface(pip));
+    if (pp) {
+      nsCOMPtr<nsIPluginInstanceOwner> owner;
+      pp->GetOwner(getter_AddRefs(owner));
+      if (owner) {
+        nsCOMPtr<nsIDocument> doc;
+        owner->GetDocument(getter_AddRefs(doc));
+        if (doc) {
+          nsCOMPtr<nsIScriptGlobalObject> globalScript;
+          doc->GetScriptGlobalObject(getter_AddRefs(globalScript));
+          nsCOMPtr<nsIDOMWindow> domWindow (do_QueryInterface(globalScript));
+          if (domWindow) {
+            NS_ADDREF(*(nsIDOMWindow**)result = domWindow.get());
+            return NPERR_NO_ERROR;
+          }
+        }
+      }
+    }
+    return NPERR_GENERIC_ERROR;
+  }
   default : return NPERR_GENERIC_ERROR;
   }
 }