The Widget you reference is pulling information already on the Sale Order Line.

Does your customization create a field on the Sale Order Line and have the Widget show it?

Also, is this a case to use Pricelists? (ie is there a calculation are you doing that can't be done with a Pricelist?)

@Ray Carnes:

No, it can't be done as a pricelist as these care choices made by the user on the fly. Client is particular that this works in a certain way.

The fields are all created in the model, sale.order.line.

Then I extended the view sale.view_order_form and added the fields invisible:

<record id="sale_order_line_tree_stock_price_custom" model="ir.ui.view">

<field name="name">sale.order.line.tree.stock.price.custom</field>

<field name="model">sale.order</field>

<field name="type">form</field>

<field name="inherit_id" ref="sale.view_order_form"/>

<field name="arch" type="xml">

<xpath expr="//page/field[@name='order_line']/tree/field[@name='price_unit']" position="before">

<field name="last_price" invisible="1"/>

<field name="last_date_order" invisible="1"/>

<field name="gross_profit_percent" invisible="1"/>

<field name="repl_cost_current" invisible="1"/>

<widget name="custom_price_widget" width="0.1"/>

</xpath>

</record>

Then there's the javascript call:

<record id="sale_order_line_view_price_custom" model="ir.ui.view">

<field name="name">sale.order.line.view.price.custom</field>

<field name="type">qweb</field>

<field name="inherit_id" ref="web.assets_backend"/>

<field name="arch" type="xml">

<xpath expr="." position="inside">

<script type="text/javascript" src="/mw_custom/static/src/js/saleOrderLinePriceCustom.js"/>

</xpath>

</field>

</record>

Which pulled from this template:

<templates>

<div t-name="mw_custom.icon">

<div>

<a tabindex="0" class="fa fa-usd text-primary"/>

</div>

</div>

<div t-name="mw_custom.CustomPricePopOver">

<table>

<tr>

<th>Last Price</th>

<td>$<span t-esc="data.last_price"/></td>

</tr>

<tr>

<td colspan="2"><span t-esc="data.last_date_order"/></td>

</tr>

<tr>

<td colspan="2"><hr/></td>

</tr>

<tr>

<th>GP%: <span t-esc="data.gp_price"/></th>

<td><a href="#">Calculate</a></td>

</tr>

<tr>

<td>Repl Cost: <span t-esc="data.repl_cost_current"/></td>

<td>Percent: <input type="text" size="3" id="gross_profit_percent"/></td>

</tr>

</table>

<button id="closeThis">Close</button>

</div>

</templates>

And populated everything and was able to handle all calculations with the JS, which went through MANY iterations, but no mater what I did, I couldn't get the results of the calculations to pass back to sale.order.line.

The result of the script would've had two: and by clicking "Use" buttons next to each, one of those was to update sale_oder_line.price_unit on the line we're working on. But it didn't seem that the line/row had an id yet because it's not saved yet, nor could I find a unique identifier for the specific field, and even when I tried to tree down through all the DOM elements, once I would mouse away from the line, price_unit would revert to whatever it had initially.