slint/examples/todo-mvc/ui/widgets/selection_list_view.slint

// Copyright © SixtyFPS GmbH <info@slint.dev>
// SPDX-License-Identifier: MIT

import { CheckBox, ListView, HorizontalBox } from "std-widgets.slint";
import { StateLayer } from "./state_layer.slint";
import { FocusTouchArea } from "./focus_touch_area.slint";
import { SizeSettings, TodoPalette, FontSettings, Icons } from "styling.slint";
import { IconButton } from "icon_button.slint";

@rust-attr(derive(serde::Serialize, serde::Deserialize))
export struct SelectionListViewItem {
    text: string,
    checked: bool,
    description: string,
}

export component SelectionListViewItemDelegate {
    callback toggle;
    callback remove;

    in property <string> text <=> text-label.text;
    in property <string> description <=> description-label.text;
    in-out property <bool> checked <=> check-box.checked;

    min-width: content-layer.min-width;
    min-height: max(SizeSettings.control-height, content-layer.min-height);
    forward-focus: touch-area;

    touch-area := FocusTouchArea {
        width: 100%;
        height: 100%;

        clicked => {
            root.toggle();
        }
    }

    StateLayer {
        width: 100%;
        height: 100%;
        focus-padding: -1px;
        pressed: touch-area.pressed || touch-area.enter-pressed;
        has-focus: touch-area.has-focus;
        has-hover: touch-area.has-hover;
    }

    content-layer := HorizontalBox {
        check-box := CheckBox {
            horizontal-stretch: 0;
            y: (parent.height - self.height) / 2;
            
            toggled => {
                root.toggle();
            }
        }

        VerticalLayout {
            alignment: center;
            
            text-label := Text {
                horizontal-alignment: left;
                color: TodoPalette.foreground;
                font-size: FontSettings.body-strong.font-size;
                font-weight: FontSettings.body-strong.font-weight;
                overflow: elide;
            }
            
            description-label := Text {
                color: TodoPalette.foreground;
                font-size: FontSettings.body.font-size;
                font-weight: FontSettings.body.font-weight;
                overflow: elide;
            }
        }     

           
        IconButton {
            y: (parent.height - self.height) / 2;
            icon: Icons.remove;
        
            clicked => {
                root.remove();
            }
        }
    }
}

export component SelectionListView inherits ListView {
    in property <[SelectionListViewItem]> model;

    callback toggle(/* index */ int);
    callback remove(/* index */ int);

    for item[index] in root.model : SelectionListViewItemDelegate {
        width: root.visible-width;
        text: item.text;
        description: item.description;
        checked: item.checked;
        
        toggle => {
            root.toggle(index);
        }

        remove => {
            root.remove(index);
        }
    }
}