59 lines
1.3 KiB
JavaScript
59 lines
1.3 KiB
JavaScript
import * as html from "./html.js";
|
|
|
|
export default class Selection {
|
|
constructor(component) {
|
|
this._component = component;
|
|
this._items = new Set();
|
|
this._node = html.node("cyp-commands", {hidden:true});
|
|
|
|
const button = this.addCommand(_ => this.clear(), {icon:"close", label:"Clear"});
|
|
button.classList.add("last");
|
|
}
|
|
|
|
clear() {
|
|
const nodes = Array.from(this._items);
|
|
while (nodes.length) { this._remove(nodes.pop()); }
|
|
}
|
|
|
|
toggle(node) {
|
|
if (this._items.has(node)) {
|
|
this._remove(node);
|
|
} else {
|
|
this._add(node);
|
|
}
|
|
}
|
|
|
|
addCommand(cb, options) {
|
|
const button = html.button({icon:options.icon}, "", this._node);
|
|
html.node("span", {}, options.label, button);
|
|
button.addEventListener("click", _ => cb(this._items));
|
|
return button;
|
|
}
|
|
|
|
_add(node) {
|
|
const size = this._items.size;
|
|
this._items.add(node);
|
|
node.classList.add("selected");
|
|
if (size == 0) { this._show(); }
|
|
}
|
|
|
|
_remove(node) {
|
|
this._items.delete(node);
|
|
node.classList.remove("selected");
|
|
if (this._items.size == 0) { this._hide(); }
|
|
|
|
}
|
|
|
|
_show() {
|
|
const parent = this._component.closest("cyp-app").querySelector("footer");
|
|
parent.appendChild(this._node);
|
|
this._node.offsetWidth; // FIXME jde lepe?
|
|
this._node.hidden = false;
|
|
}
|
|
|
|
_hide() {
|
|
this._node.hidden = true;
|
|
this._node.remove();
|
|
}
|
|
}
|