slint/internal/compiler/tests/syntax/callbacks/property-changes.slint

// Copyright © SixtyFPS GmbH <info@slint.dev>
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-2.0 OR LicenseRef-Slint-Software-3.0

export component Sub {
    in-out property <int> zoo;
    private property <int> clou;

    callback clicked;
    public function hello() {}

    out property <invalid> invalid;
    //            ^error{Unknown type 'invalid'}
}

export component Test {
    Sub {
        changed zoo => { }
        changed clou => { }
        //      ^error{Change callback on a private property 'clou'}
        changed zoo => { }
        //      ^error{Duplicated change callback on 'zoo'}

        changed not-exist => {}
        //      ^error{Property 'not-exist' does not exist}

        changed clicked => { }
        //      ^error{Change callback can only be set on properties, and 'clicked' is a callback}

        changed hello => { }
        //      ^error{Change callback can only be set on properties, and 'hello' is a function}

        changed invalid => { }
        //      ^error{Property 'invalid' does not exist}

        property <invalid2> invalid2;
        //        ^error{Unknown type 'invalid2'}
        changed invalid2 => { }
        //      ^error{Property 'invalid2' does not exist}

        property <Sub> invalid3;
        //        ^error{'Sub' is not a valid type}
        changed invalid3 => { }
        //      ^error{Property 'invalid3' does not exist}

    }

    property <int> xyz: 42;
    changed xyz => { }
}