cyp/app/js/selection.js
2020-03-10 10:07:30 +01:00

75 lines
1.8 KiB
JavaScript

import * as html from "./html.js";
export default class Selection {
constructor(component, mode) {
this._component = component;
/** @type {"single" | "multi"} */
this._mode = mode;
this._items = []; // FIXME ukladat skutecne HTML? co kdyz nastane refresh?
this._node = html.node("cyp-commands", {hidden:true});
}
clear() {
while (this._items.length) { this.remove(this._items[0]); }
}
addCommand(cb, options) {
const button = html.button({icon:options.icon}, "", this._node);
html.node("span", {}, options.label, button);
button.addEventListener("click", _ => {
const arg = (this._mode == "single" ? this._items[0] : this._items);
cb(arg);
});
return button;
}
addCommandAll() {
this.addCommand(_ => {
Array.from(this._component.children).forEach(node => this.add(node));
}, {label:"Select all", icon:"plus"});
}
addCommandCancel() {
const button = this.addCommand(_ => this.clear(), {icon:"cancel", label:"Cancel"});
button.classList.add("last");
return button;
}
toggle(node) {
if (this._items.includes(node)) {
this.remove(node);
} else {
this.add(node);
}
}
add(node) {
if (this._items.includes(node)) { return; }
const length = this._items.length;
this._items.push(node);
node.classList.add("selected");
if (this._mode == "single" && length > 0) { this.remove(this._items[0]); }
if (length == 0) { this._show(); }
}
remove(node) {
const index = this._items.indexOf(node);
this._items.splice(index, 1);
node.classList.remove("selected");
if (this._items.length == 0) { this._hide(); }
}
_show() {
const parent = this._component.closest("cyp-app").querySelector("footer"); // FIXME jde lepe?
parent.appendChild(this._node);
this._node.offsetWidth; // FIXME jde lepe?
this._node.hidden = false;
}
_hide() {
this._node.hidden = true;
this._node.remove();
}
}