From 080ab9869d8b7a83349b5eb4255140fb40ee9bed Mon Sep 17 00:00:00 2001
From: Artur Signell <artur.signell@itmill.com>
Date: Fri, 21 Aug 2009 11:47:17 +0000
Subject: [PATCH] #3222 - Add functionality for embedded Vaadin application to
 resize parent frame

svn changeset:8521/svn branch:6.1
---
 .../vaadin/terminal/gwt/client/ui/VView.java  | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/src/com/vaadin/terminal/gwt/client/ui/VView.java b/src/com/vaadin/terminal/gwt/client/ui/VView.java
index 00ed1e935c..98b64f7c72 100644
--- a/src/com/vaadin/terminal/gwt/client/ui/VView.java
+++ b/src/com/vaadin/terminal/gwt/client/ui/VView.java
@@ -78,6 +78,12 @@ public class VView extends SimplePanel implements Container,
 
     private boolean immediate;
 
+    /**
+     * Reference to the parent frame/iframe. Null if there is no parent (i)frame
+     * or if the application and parent frame are in different domains.
+     */
+    private Element parentFrame;
+
     public VView(String elementId) {
         super();
         setStyleName(CLASSNAME);
@@ -114,6 +120,7 @@ public class VView extends SimplePanel implements Container,
             focus(getElement());
         }
 
+        parentFrame = getParentFrame();
     }
 
     private static native void focus(Element el)
@@ -232,6 +239,9 @@ public class VView extends SimplePanel implements Container,
         }
 
         layout.updateFromUIDL(childUidl, client);
+        if (!childUidl.getBooleanAttribute("cached")) {
+            updateParentFrameSize();
+        }
 
         // Update subwindows
         final HashSet<VWindow> removedSubWindows = new HashSet<VWindow>(
@@ -551,10 +561,39 @@ public class VView extends SimplePanel implements Container,
          * Can never propagate further and we do not want need to re-layout the
          * layout which has caused this request.
          */
+        updateParentFrameSize();
+
         return true;
 
     }
 
+    private void updateParentFrameSize() {
+        if (parentFrame == null) {
+            return;
+        }
+
+        int childHeight = Util.getRequiredHeight(getWidget().getElement());
+        int childWidth = Util.getRequiredWidth(getWidget().getElement());
+
+        parentFrame.getStyle().setPropertyPx("width", childWidth);
+        parentFrame.getStyle().setPropertyPx("height", childHeight);
+    }
+
+    private static native Element getParentFrame()
+    /*-{
+        try {
+            var frameElement = $wnd.frameElement;
+            if (frameElement == null) {
+                return null;
+            }
+            if (frameElement.getAttribute("autoResize") == "true") {
+                return frameElement;
+            }
+        } catch (e) {
+        }
+        return null;
+    }-*/;
+
     public void updateCaption(Paintable component, UIDL uidl) {
         // NOP Subwindows never draw caption for their first child (layout)
     }
-- 
2.39.5