fix(vega): Wrap vega module from pywebvue

trame/vegaEmbed/__init__.py

@@ -0,0 +1,27 @@
+from trame import get_app_instance
+from trame.html import AbstractElement
+
+from pywebvue.modules import VegaEmbed
+
+# Make sure used module is available
+_app = get_app_instance()
+_app.enableModule(VegaEmbed)
+
+
+class VegaEmbed(AbstractElement):
+    @staticmethod
+    def altair_to_spec(chart):
+        return chart.to_dict()
+
+    def __init__(self, chart=None, name=None, **kwargs):
+        super().__init__("VegaEmbed", **kwargs)
+        self._chart = chart
+        self._name = name or f"chart_{self._id}"
+        self._attributes["spec"] = f':spec="{self._name}"'
+
+    def update(self, chart=None):
+        if chart:
+            self._chart = chart
+        if self._chart:
+            _app = get_app_instance()
+            _app.set(self._name, VegaEmbed.altair_to_spec(self._chart))