czkawka/krokiet/ui/selectable_tree_view.slint

import { Button, VerticalBox , HorizontalBox, TabWidget, ListView, StandardListView, StandardTableView, CheckBox, ScrollView} from "std-widgets.slint";
import {TypeOfOpenedItem} from "common.slint";
import {ColorPalette} from "color_palette.slint";
import {MainListModel} from "common.slint";
import {Callabler} from "callabler.slint";
import {GuiState} from "gui_state.slint";

export component SelectableTableView inherits Rectangle {
    callback item_opened(string);
    in property <[string]> columns;
    in-out property <[MainListModel]> values;
    in-out property <[length]> column_sizes;
    private property <int> column_number: column-sizes.length + 1;
    // This idx, starts from zero, but since first is always a checkbox, and is not in model.val values, remove 1 from idx
    in-out property <int> parentPathIdx;
    in-out property <int> fileNameIdx;
    in-out property <int> selected_item: -1;
    out property <length> list_view_width: max(self.width - 20px, column_sizes[0] + column_sizes[1] + column_sizes[2] + column_sizes[3] + column_sizes[4] + column_sizes[5] + column_sizes[6] + column_sizes[7] + column_sizes[8] + column_sizes[9] + column_sizes[10] + column_sizes[11]);
    forward-focus: focus_item;
    // TODO not works
    focus_item := FocusScope {
        key-released(event) => {
            debug(event);
            accept
        }
    }

    VerticalBox {
        padding: 0px;
        forward-focus: focus-item;
        ScrollView {
            height: 30px;
            viewport-x <=> list_view.viewport-x;
            vertical-stretch: 0;

            HorizontalLayout {
                spacing: 5px;
                for title [idx] in root.columns: HorizontalLayout {
                    width: root.column-sizes[idx];
                    Text {
                        overflow: elide;
                        text: title;
                    }

                    Rectangle {
                        width: 1px;
                        background: gray;
                        forward-focus: focus-item;
                        TouchArea {
                            width: 5px;
                            x: (parent.width - self.width) / 2;
                            property <length> cached;
                            forward-focus: focus-item;
                            pointer-event(event) => {
                                if (event.button == PointerEventButton.left && event.kind == PointerEventKind.down) {
                                    self.cached = root.column_sizes[idx];
                                }
                            }
                            moved => {
                                if (self.pressed) {
                                    root.column_sizes[idx] += (self.mouse-x - self.pressed-x);
                                    if (root.column_sizes[idx] < 20px) {
                                        root.column_sizes[idx] = 20px;
                                    }
                                }
                            }
                            mouse-cursor: ew-resize;
                        }
                    }
                }
            }
        }

        list_view := ListView {
            padding: 0px;
            min-width: 100px;
            forward-focus: focus-item;
            for r [idx] in root.values: Rectangle {
                width: list_view_width;
            
                border-radius: 5px;
                forward-focus: focus-item;
                height: 20px;
                background: r.header-row ? ColorPalette.list_view_normal_header_color : (touch-area.has-hover ? (r.selected_row ? ColorPalette.list-view-normal-selected-header : ColorPalette.list_view_normal_color) : (r.selected_row ? ColorPalette.list-view-normal-selected-header : ColorPalette.list_view_normal_color));
                touch_area := TouchArea {
                    forward-focus: focus-item;
                    clicked => {
                        if (!r.header_row) {
                            r.selected_row = !r.selected_row;
                            if (root.selected-item == -1) {
                                root.selected-item = idx;
                            } else {
                                if (r.selected_row == true) {
                                    root.values[root.selected-item].selected_row = false;
                                    root.selected-item = idx;
                                } else {
                                    root.selected-item = -1;
                                }
                            }

                            if (root.selected_item != -1) {
                                Callabler.load_image_preview(r.val[root.parentPathIdx - 1] + "/" + r.val[root.fileNameIdx - 1]);
                            } else {
                                GuiState.preview-visible = false;
                            }
                        }
                    }
                    pointer-event(event) => {
                        // TODO this should be clicked by double-click
                        if (event.button == PointerEventButton.right && event.kind == PointerEventKind.up) {
                            Callabler.item_opened(r.val[root.parentPathIdx - 1])
                        } else if (event.button == PointerEventButton.middle && event.kind == PointerEventKind.up) {
                            Callabler.item_opened(r.val[root.parentPathIdx - 1] + "/" + r.val[root.fileNameIdx - 1])
                        }
                    }
                }

                HorizontalLayout {
                    forward-focus: focus-item;
                    CheckBox {
                        visible: !r.header-row;
                        checked: r.checked && !r.header-row;
                        width: root.column-sizes[0];
                        forward-focus: focus-item;
                        toggled => {
                            r.checked = self.checked;
                        }
                    }

                    HorizontalLayout {
                        spacing: 5px;
                        for f [idx] in r.val: Text {
                            width: root.column-sizes[idx + 1];
                            text: f;
                            font-size: 12px;
                            forward-focus: focus-item;
                            vertical-alignment: center;
                            overflow: elide;
                        }
                    }
                }
            }
        }
    }

    public function deselect_selected_item() {
        if (root.selected_item != -1) {
            root.values[root.selected-item].selected_row = false;
            root.selected-item = -1;
        }
    }
}