// 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

syntax = "proto3";

package proto;
// Common messages

// Index in generational arena in AUT
message Handle {
    uint64 index = 1; // ### should use uint128 if only it were available
    uint64 generation = 2;
}

enum ElementAccessibilityAction {
    Default_ = 0;
    Increment = 1;
    Decrement = 2;
}

enum PointerEventButton {
    Left = 0;
    Right = 1;
    Middle = 2;
}

enum ClickAction {
    SingleClick = 0;
    DoubleClick = 1;
}

message PointerPressEvent {
    LogicalPosition position = 1;
    PointerEventButton button = 2;
}

message PointerReleaseEvent {
    LogicalPosition position = 1;
    PointerEventButton button = 2;
}

message PointerMoveEvent {
    LogicalPosition position = 1;
}

message PointerScrolledEvent {
    LogicalPosition position = 1;
    float delta_x = 2;
    float delta_y = 3;
}

message PointerExitedEvent {
}

message KeyPressedEvent {
    string text = 1;
}

message KeyPressRepeatedEvent {
    string text = 1;
}

message KeyReleasedEvent {
    string text = 1;
}

message WindowEvent {
    oneof event {
        PointerPressEvent pointer_pressed = 1;
        PointerReleaseEvent pointer_released = 2;
        PointerMoveEvent pointer_moved = 3;
        PointerScrolledEvent pointer_scrolled = 4;
        PointerExitedEvent pointer_exited = 5;
        KeyPressedEvent key_pressed = 6;
        KeyPressRepeatedEvent key_press_repeated = 7;
        KeyReleasedEvent key_released = 8;
    }
}

// Copied from enums.rs - can't be auto-generated :(
// with one difference: None became Unknown, because None doesn't compile.
// Upside: AccessKit also uses Unknown :)
enum AccessibleRole {
    Unknown = 0;
    Button = 1;
    Checkbox = 2;
    Combobox = 3;
    List = 4;
    Slider = 5;
    Spinbox = 6;
    Tab = 7;
    TabList = 8;
    Text = 9;
    Table = 10;
    Tree = 11;
    ProgressIndicator = 12;
    TextInput = 13;
    Switch = 14;
    ListItem = 15;
}

message ElementQueryInstruction {
    oneof instruction {
        bool match_descendants = 1; // boolean value ignored
        string match_element_id = 2;
        string match_element_type_name = 3;
        string match_element_type_name_or_base = 4;
        AccessibleRole match_element_accessible_role = 5;
    }
}

// Requests

message RequestWindowListMessage {
}

message RequestWindowProperties {
    Handle window_handle = 1;
}

message RequestFindElementsById {
    Handle window_handle = 1;
    string elements_id = 2;
}

message RequestElementProperties {
    Handle element_handle = 1;
}

message RequestInvokeElementAccessibilityAction {
    Handle element_handle = 1;
    ElementAccessibilityAction action = 2;
}

message RequestSetElementAccessibleValue {
    Handle element_handle = 1;
    string value = 2;
}

message RequestTakeSnapshot {
    Handle window_handle = 1;
}

message RequestElementClick {
    Handle element_handle = 1;
    ClickAction action = 2;
    PointerEventButton button = 3;
}

message RequestDispatchWindowEvent {
    Handle window_handle = 1;
    WindowEvent event = 2;
}

message RequestQueryElementDescendants {
    Handle element_handle = 1;
    repeated ElementQueryInstruction query_stack = 2;
    bool find_all = 3;
}

message RequestToAUT {
    oneof msg {
        RequestWindowListMessage request_window_list = 1;
        RequestWindowProperties request_window_properties = 2;
        RequestFindElementsById request_find_elements_by_id = 3;
        RequestElementProperties request_element_properties = 4;
        RequestInvokeElementAccessibilityAction request_invoke_element_accessibility_action = 5;
        RequestSetElementAccessibleValue request_set_element_accessible_value = 6;
        RequestTakeSnapshot request_take_snapshot = 7;
        RequestElementClick request_element_click = 8;
        RequestDispatchWindowEvent request_dispatch_window_event = 9;
        RequestQueryElementDescendants request_query_element_descendants = 10;
    }
}

// Responses

message ErrorResponse {
    string message = 1;
}

message WindowListResponse {
    repeated Handle window_handles = 1;
}

message PhysicalSize {
    uint32 width = 1;
    uint32 height = 2;
}

message PhysicalPosition {
    int32 x = 1;
    int32 y = 2;
}

message LogicalSize {
    float width = 1;
    float height = 2;
}

message LogicalPosition {
    float x = 1;
    float y = 2;
}

message WindowPropertiesResponse {
    bool is_fullscreen = 1;
    bool is_maximized = 2;
    bool is_minimized = 3;
    PhysicalSize size = 4;
    PhysicalPosition position = 5;
    Handle root_element_handle = 6;
}

message ElementsResponse {
    repeated Handle element_handles = 1;
}

message ElementTypeNameAndId {
    string type_name = 1;
    string id = 2;
}

message ElementPropertiesResponse {
    repeated ElementTypeNameAndId type_names_and_ids = 1;
    string accessible_label = 2;
    string accessible_value = 3;
    float accessible_value_maximum = 4;
    float accessible_value_minimum = 5;
    float accessible_value_step = 6;
    string accessible_description = 7;
    bool accessible_checked = 8;
    bool accessible_checkable = 9;
    LogicalSize size = 10;
    LogicalPosition absolute_position = 11;
    AccessibleRole accessible_role = 12;
    float computed_opacity = 13;
}

message InvokeElementAccessibilityActionResponse {
}

message SetElementAccessibleValueResponse {
}

message TakeSnapshotResponse {
    bytes window_contents_as_png = 1;
}

message ElementClickResponse {    
}

message DispatchWindowEventResponse {
}

message ElementQueryResponse {
    repeated Handle element_handles = 1;
}

message AUTResponse {
    oneof msg {
        ErrorResponse error = 1;
        WindowListResponse window_list = 2;
        WindowPropertiesResponse window_properties = 3;
        ElementsResponse elements = 4;
        ElementPropertiesResponse element_properties = 5;
        InvokeElementAccessibilityActionResponse invoke_element_accessibility_action_response = 6;
        SetElementAccessibleValueResponse set_element_accessible_value_response = 7;
        TakeSnapshotResponse take_snapshot_response = 8;
        ElementClickResponse element_click_response = 9;
        DispatchWindowEventResponse dispatch_window_event_response = 10;
        ElementQueryResponse element_query_response = 11;
    }
}