gravity/tool/options.js
2026-01-04 16:45:40 -06:00

142 lines
4.2 KiB
JavaScript

// Options picker
import {
OPTION_GROUP_CLASSNAME,
TALL_CLASSNAME,
TOOL_INFO_CLASSNAME,
WIDE_CLASSNAME,
} from '../config.js';
import {Tool} from '../tool.js';
import {show, hide} from '../helper.js';
export class OptionsTool extends Tool {
sectionNames = undefined;
groups = {};
constructor(sectionNames) {
super();
this.sectionNames = sectionNames;
}
setContainer(container) {
super.setContainer(container);
// Initialize
for (const sectionName of this.sectionNames) {
const group = this.sim.options.getSection(sectionName);
const item = this.visitItem(group);
this.div.appendChild(item);
}
}
// For now, `showIf` must be the name of a boolean property, with optional negation
shouldShow(option) {
if (option.showIf === undefined) return true;
const {name, value} = this.deconstructOption(option.showIf);
return this.sim.getOption(name) === value;
}
deconstructOption(showIf) {
let name = showIf;
let value = true;
if (name.startsWith('!')) {
value = false;
name = name.slice(1);
}
return {name, value};
}
visitItem(item, path) {
path = [path, item.name].filter(x => !!x).join('.');
switch (item.type) {
case 'group': {
const groupEl = document.createElement('div');
groupEl.classList.add(OPTION_GROUP_CLASSNAME);
const group = {groupEl, items: []};
this.groups[path] = group;
if (item.title) {
const heading = document.createElement('h3');
heading.innerHTML = item.title;
groupEl.appendChild(heading);
groupEl.items.push({itemEl: heading});
}
for (const next of item.items) {
const optionEl = this.visitItem(next, path);
group.items.push(next);
if (this.shouldShow(next)) {
groupEl.appendChild(optionEl);
}
if (next.showIf) {
const {name} = this.deconstructOption(next.showIf);
this.sim.onOptionSet(name, () => {
if (this.shouldShow(next)) {
show({
items: group.items,
item: next,
parentEl: groupEl,
itemEl: optionEl,
});
} else {
hide({
items: group.items,
item: next,
parentEl: groupEl,
itemEl: optionEl,
});
}
});
}
}
return groupEl;
}
case 'boolean': {
const button = document.createElement('button');
button.innerHTML = item.title;
if (item.wide === true) button.classList.add(WIDE_CLASSNAME);
if (item.tall === true) button.classList.add(TALL_CLASSNAME);
const value = this.sim.getOption(path);
button.style.opacity = value ? '100%' : '50%';
this.sim.onOptionSet(path, ({value}) => {
button.style.opacity = value ? '100%' : '50%';
});
button.addEventListener('click', () => {
const value = this.sim.getOption(path);
this.sim.setOption(path, !value);
});
return button;
}
case 'number': {
const div = document.createElement('div');
const title = document.createElement('button');
const input = document.createElement('input');
const maxLength = item.maxLength || 8;
div.appendChild(title);
div.appendChild(input);
div.classList.add(WIDE_CLASSNAME);
title.classList.add(TOOL_INFO_CLASSNAME);
if (item.wide) {
title.classList.add(WIDE_CLASSNAME);
input.classList.add(WIDE_CLASSNAME);
}
title.innerHTML = item.title;
input.value = this.sim.getOption(path);
input.addEventListener('input', () => {
input.value = input.value.slice(0, maxLength);
});
input.addEventListener('change', () => {
this.sim.setOption(path, input.value);
});
this.sim.onOptionSet(path, ({value}) => {
input.value = value;
});
return div;
}
default:
throw new Error('Unknown option type');
}
}
}