beremiz

Altered DropDown widget (#60)

13 months ago, Dino Kosic
dde2bbf2c43a
Altered DropDown widget (#60)

* Altered DropDown widget: Added another mandatory path variable - selection value (depending on use case, one could prefer direct access to selection value rather than selection index); and another optional path variable - options (string variable to allow for dynamic change of options, as opposed to providing static list of options through arguments); and example with both static and dynamic dropdowns.

* Make second path variable optional, for backwards compatibility
<?xml version='1.0' encoding='utf-8'?>
<PyFile xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<variables/>
<globals>
<xhtml:p><![CDATA[
import sys
last_payload = None
def topic_callback(topic, payload):
global last_payload
last_payload = payload
# called from PLC
def publish_example(data):
global last_payload
MQTT_publish("mqtt_0", "py_test", data)
return last_payload
]]></xhtml:p>
</globals>
<init>
<xhtml:p><![CDATA[
]]></xhtml:p>
</init>
<cleanup>
<xhtml:p><![CDATA[
]]></xhtml:p>
</cleanup>
<start>
<xhtml:p><![CDATA[
MQTT_subscribe("mqtt_0", "py_test", topic_callback)
]]></xhtml:p>
</start>
<stop>
<xhtml:p><![CDATA[
]]></xhtml:p>
</stop>
</PyFile>