home-assistant.io/source/developers/frontend_creating_custom_ui.markdown

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page	Creating custom UI	Introduction to create custom ui for Home Assistant.	2017-02-04 13:00	true	false	true	true	0.38

If you would like to use your own State card without merging your code into home-assistant-polymer you can create your own implementation.

Put the element source file and its dependencies in www/custom_ui/ directory under your Home Assistant configuration directory.

For example if creating a state card for the light domain named my_custom_light_card put my_custom_light_card.html in www/custom_ui/.

That file should implement <my_custom_light_card> tag with Polymer.

In my_custom_light_card.html you should use <link rel="import"> to import all the dependencies not used by Home Assistant's UI. Do not import any dependencies used by the Home Assistant UI. Importing those will work in development: 1 mode, but will fail in production mode.

1. In the customize: section of the configuration.yaml file put custom_ui_state_card: <element-name>.
2. In the frontend section use extra_html_url to specify the URL to load.

For example:

homeassistant:
  customize:
    light.bedroom:
      custom_ui_state_card: my_custom_light_card

frontend:
  extra_html_url:
    - /local/custom_ui/my_custom_light_card.html

For more possibilities, see the Custom UI section on our Examples page.