Hi, everyone!

In odoo17, I tried to open a popup window using a client action. Here‘s the code:

client action definition in view xml:

<record id="estate_lease_contract_terminate_popup" model="ir.actions.client">
    <field name="name">Confirm Terminate</field>
    <field name="tag">estate_lease_contract.contract_terminate_dialog</field>
    <field name="target">new</field>
</record>

static xml source for popup window:

<?xml version="1.0" encoding="utf-8"?>

<templates xml:space="preserve">

    <t t-name="estate_lease_contract.ContractTerminateAction">
        <div class="ms-1 mt-1">
            <div class="align-self-center" style="display: flex; justify-content: center;">
                <div>
                    <span>Please confirm the following jobs done, then click "Terminate" btton!</span>
                    <t t-foreach="terminate_todo_list" t-as="todo" t-key="todo.id">
                        <TodoItem todo="todo" toggleState.bind="toggleTodo" removeTodo.bind="removeTodo"/>
                    </t>
                </div>
            </div>
            <div class="align-self-center" style="display: flex; justify-content: center;">
                <div class="col-sm-5 mt16" style="display: flex; justify-content: center;">
                    <button class="btn btn-primary mb16" t-on-click="() => this.onClickTerminateContract()" t-att-disabled="this.confirm_button_disable()">
                        <div class="mb16 mt16">Terminate</div>
                    </button>
                </div>
            </div>
        </div>
    </t>
</templates>

static js source for popup window:

/** @odoo-module */

import {Component, useState} from "@odoo/owl";
import { registry } from "@web/core/registry";
import {useService} from "@web/core/utils/hooks";
import {TodoItem} from "./todo_item";

let todo_list = [
    'Job A done!',
    'Job B done!',
    'Job C done!',
]

export class EstateLeaseContractTerminate extends Component {
    static template = "estate_lease_contract.ContractTerminateAction";
    static components = { TodoItem };

    setup() {
        this.action = useService("action");
        this.terminate_todo_list = useState([]);
        let i = 0;
        for (const todo_c of todo_list) {
            this.terminate_todo_list.push({
                id: i,
                description: todo_c,
                isCompleted: false
            });
            i++;
        }
        if (this.footer) {
            this.footer.destroy();
        }
    }
    toggleTodo(todoId) {
        const todo = this.terminate_todo_list.find((todo) => todo.id === todoId);
        if (todo) {
            todo.isCompleted = !todo.isCompleted;
        }
    }

    removeTodo(todoId) {
        const todoIndex = this.terminate_todo_list.findIndex((todo) => todo.id === todoId);
        if (todoIndex >= 0) {
            this.terminate_todo_list.splice(todoIndex, 1);
        }
    }

    confirm_button_disable(){
        for (const each_todo of this.terminate_todo_list) {
            if (!each_todo.isCompleted) {
                return true;
            }
        }
        return false;
    }

    getURLParams() {
        const urlParams = new URLSearchParams(window.location.hash.substring(1));

        console.log(urlParams);
        console.log(urlParams.get('id'));
        const params = {};

        urlParams.forEach((value, key) => {
            params[key] = value;
        });

        console.log(params);
        console.log(params['id']);
        return params;
    }

    onClickTerminateContract(){
        const params = this.getURLParams();
        console.log(params);
        console.log(params['id']);

        this.action.doAction("estate_lease_contract.estate_lease_contract_terminate_svr_action",
            {additionalContext: params});
    }
}

registry.category("actions").add("estate_lease_contract.contract_terminate_dialog", EstateLeaseContractTerminate);

Through out the source code above, the default 'OK' button always displays in the popup window. How to hide the default 'OK' button in the footer of the popup window?

I have tried the following methods, but the default ok button is still there...

1. adding params to the client action definition as below:<field name="params" eval="&quot;{'flags': {'form': {'action_buttons': False}}}&quot;"/>
2. adding destroy in js setup() method: if (this.footer) {this.footer.destroy();}
3. adding xpath expr="//footer" position="inside" to the view xml, but compile exception happend while server starting up because of "xml file does not fit the required schema! " or "Invalid field 'arch' on model 'ir.actions.client'" 

Is it possible to hide the default button in client popup window ?