Secure IFrame prevents from clickjacking

Author: kevzlou7979

gwt-material/src/main/java/gwt/material/design/client/ui/html/IFrame.java

@@ -0,0 +1,50 @@
+package gwt.material.design.client.ui.html;
+
+import com.google.gwt.dom.client.Document;
+import gwt.material.design.client.base.MaterialWidget;
+import gwt.material.design.client.base.mixin.AttributeMixin;
+
+public class IFrame extends MaterialWidget {
+
+    enum Sandbox {
+        ALL_RESTRICTIONS(""),
+        ALLOW_FORMS("allow-forms"),
+        ALLOW_POINTER_LOCK("allow-pointer-lock"),
+        ALLOW_POPUPS("allow-popups"),
+        ALLOW_SAME_ORIGIN("allow-same-origin"),
+        ALLOW_SCRIPTS("allow-scripts"),
+        ALLOW_TOP_NAVIGATION("allow-top-navigation");
+
+        private String restriction;
+
+        Sandbox(String restriction) {
+            this.restriction = restriction;
+        }
+
+        public String getRestriction() {
+            return restriction;
+        }
+    }
+
+    private AttributeMixin<IFrame> attributeMixin;
+
+    public IFrame() {
+        super(Document.get().createIFrameElement());
+        setSandBoxRestriction(Sandbox.ALL_RESTRICTIONS);
+    }
+
+    public void setSandBoxRestriction(Sandbox restriction) {
+        getAttributeMixin().setAttribute(restriction.getRestriction());
+    }
+
+    public String getSandBoxRestriction() {
+        return getAttributeMixin().getAttribute();
+    }
+
+    public AttributeMixin<IFrame> getAttributeMixin() {
+        if (attributeMixin == null) {
+            attributeMixin = new AttributeMixin<>(this, "sandbox");
+        }
+        return attributeMixin;
+    }
+}