Library: Port 'Email' to Python (#816)

Author: gregorni

src/Library/demos/Email/main.py

@@ -0,0 +1,41 @@
+import gi
+
+gi.require_version("Xdp", "1.0")
+gi.require_version("XdpGtk4", "1.0")
+from gi.repository import Gio, Xdp, XdpGtk4
+import workbench
+
+portal = Xdp.Portal()
+parent = XdpGtk4.parent_new_gtk(workbench.window)
+
+button = workbench.builder.get_object("button")
+entry = workbench.builder.get_object("entry")
+
+
+def on_compose_opened(portal, result):
+    success = portal.compose_email_finish(result)
+
+    if success:
+        print("Success")
+    else:
+        print("Failure, verify that you have an email application.")
+
+
+def on_clicked(_button):
+    email_address = entry.get_text()
+
+    portal.compose_email(
+        parent,
+        [email_address],  # addresses
+        None,  # cc
+        None,  # bcc
+        "Email from Workbench",  # subject
+        "Hello World!",  # body
+        None,  # attachments
+        Xdp.EmailFlags.NONE,  # flags
+        None,  # cancellable
+        on_compose_opened,  # callback
+    )
+
+
+button.connect("clicked", on_clicked)