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ItemSelector

An gui for users to select items from given standardized json

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/458132/1138364/ItemSelector.js

/* eslint-disable no-multi-spaces */
/* eslint-disable dot-notation */

// ==UserScript==
// @name               ItemSelector
// @namespace          ItemSelector
// @version            0.3.4
// @description        An gui for users to select items from given standardized json
// @author             PY-DNG
// @license            GPL-v3
// ==/UserScript==

/* global structuredClone */
let ItemSelector = (function() {
	// function DoLog() {}
	// Arguments: level=LogLevel.Info, logContent, trace=false
	const [LogLevel, DoLog] = (function() {
		const LogLevel = {
			None: 0,
			Error: 1,
			Success: 2,
			Warning: 3,
			Info: 4,
		};

		return [LogLevel, DoLog];
		function DoLog() {
			// Get window
			const win = (typeof(unsafeWindow) === 'object' && unsafeWindow !== null) ? unsafeWindow : window;

			const LogLevelMap = {};
			LogLevelMap[LogLevel.None] = {
				prefix: '',
				color: 'color:#ffffff'
			}
			LogLevelMap[LogLevel.Error] = {
				prefix: '[Error]',
				color: 'color:#ff0000'
			}
			LogLevelMap[LogLevel.Success] = {
				prefix: '[Success]',
				color: 'color:#00aa00'
			}
			LogLevelMap[LogLevel.Warning] = {
				prefix: '[Warning]',
				color: 'color:#ffa500'
			}
			LogLevelMap[LogLevel.Info] = {
				prefix: '[Info]',
				color: 'color:#888888'
			}
			LogLevelMap[LogLevel.Elements] = {
				prefix: '[Elements]',
				color: 'color:#000000'
			}

			// Current log level
			DoLog.logLevel = (win.isPY_DNG && win.userscriptDebugging) ? LogLevel.Info : LogLevel.Warning; // Info Warning Success Error

			// Log counter
			DoLog.logCount === undefined && (DoLog.logCount = 0);

			// Get args
			let [level, logContent, trace] = parseArgs([...arguments], [
				[2],
				[1,2],
				[1,2,3]
			], [LogLevel.Info, 'DoLog initialized.', false]);

			// Log when log level permits
			if (level <= DoLog.logLevel) {
				let msg = '%c' + LogLevelMap[level].prefix + (typeof GM_info === 'object' ? `[${GM_info.script.name}]` : '') + (LogLevelMap[level].prefix ? ' ' : '');
				let subst = LogLevelMap[level].color;

				switch (typeof(logContent)) {
					case 'string':
						msg += '%s';
						break;
					case 'number':
						msg += '%d';
						break;
					default:
						msg += '%o';
						break;
				}

				if (++DoLog.logCount > 512) {
					console.clear();
					DoLog.logCount = 0;
				}
				console[trace ? 'trace' : 'log'](msg, subst, logContent);
			}
		}
	}) ();

	return ItemSelector;

	function ItemSelector(useWrapper=true) {
		const IS = this;
		const DATA = {
			showing: false, json: null, data: null, options: null
		};
		const elements = IS.elements = {};
		defineGetter(IS, 'showing', () => DATA.showing);
		defineGetter(IS, 'json', () => MakeReadonlyObj(DATA.json));
		defineGetter(IS, 'data', () => MakeReadonlyObj(DATA.data));
		defineGetter(IS, 'options', () => MakeReadonlyObj(DATA.options));
		IS.show = show;
		IS.close = close;
		IS.setTheme = setTheme;
		IS.getSelectedItems = getSelectedItems;
		init();

		function init() {
			const wrapperDoc = elements.wrapperDoc = useWrapper ? (function() {
				const wrapper = elements.wrapper = $CrE(randstr(4, false, false) + '-' + randstr(4, false, false));
				const shadow = wrapper.attachShadow({mode: 'closed'});
				wrapper.style.display = 'block';
				wrapper.style.zIndex = 99999999;
				document.body.appendChild(wrapper);
				return shadow;
			}) () : document;
			const wrapper = elements.wrapper = useWrapper ? wrapperDoc : wrapperDoc.body;
			const container = elements.container = $CrE('div');
			const header = elements.header = $CrE('div');
			const body = elements.body = $CrE('div');
			const footer = elements.footer = $CrE('div');
			container.classList.add('itemselector-container');
			header.classList.add('itemselector-header');
			body.classList.add('itemselector-body');
			footer.classList.add('itemselector-footer');
			container.appendChild(header);
			container.appendChild(body);
			container.appendChild(footer);
			wrapper.appendChild(container);

			const title = elements.title = $CrE('span');
			title.classList.add('itemselector-title');
			header.appendChild(title);

			const bglist = elements.bglist = $CrE('div');
			bglist.classList.add('itemselector-bglist');
			body.appendChild(bglist);

			const list = elements.list = $CrE('pre');
			list.classList.add('itemselector-list');
			body.appendChild(list);

			const btnOK = $CrE('button');
			const btnCancel = $CrE('button');
			const btnClose = $CrE('button');
			btnOK.innerText = 'OK';
			btnCancel.innerText = 'Cancel';
			btnClose.innerText = 'x';
			btnOK.className = 'itemselector-button itemselector-button-ok';
			btnCancel.className = 'itemselector-button itemselector-button-cancel';
			btnClose.className = 'itemselector-button itemselector-button-close';
			$AEL(btnOK, 'click', ok_onClick);
			$AEL(btnCancel, 'click', cancel_onClick);
			$AEL(btnClose, 'click', close_onClick);
			header.appendChild(btnClose);
			footer.appendChild(btnCancel);
			footer.appendChild(btnOK);
			elements.button = {btnOK, btnCancel, btnClose};

			const cssParent = useWrapper ? wrapper : document.head;
			const css = '.itemselector-container {display: none;position: fixed;position: fixed;width: 60vw;height: 60vh;left: 20vw;top: 20vh;border-radius: 1em;padding: 2em;user-select: none;font-family: -apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol!important;}.itemselector-container.itemselector-show {display: block;}.itemselector-header {position: absolute;width: calc(100% - 4em);padding-bottom: 0.3em;}.itemselector-title {position: relative;font-size: 1.3em;}.itemselector-body {position: absolute;top: calc(2em + 20px * 1.3 + 20px * 0.3 + 1px + 0.3em);bottom: calc(2em + 20px + 20px + calc(60vw - 4em) * 2 / 100 + 0.3em);overflow: auto;width: calc(100% - 4em);z-index: -2;}.itemselector-bglist {position: absolute;left: 0;width: 100%;z-index: -1;}.itemselector-footer {position: absolute;bottom: 2em;width: calc(100% - 4em);}.itemselector-button {font-size: 20px;width: 48%;margin: 1%;border: none;border-radius: 3px;padding: 0.5em;font-weight: 500;}.itemselector-button.itemselector-button-close {position: relative;float: right;margin: 0;padding: 0;width: 1.3em;height: 1.3em;text-align: center;font-size: 20px;}.itemselector-list {margin: 0;pointer-events: none;}.itemselector-item {margin: 0;margin-left: 1em;}.itemselector-item-root {margin-left: 0;}.itemselector-item-background {width: 100%;height: 49px;}.itemselector-item-background:first-child {border-top: none;}.itemselector-item-background.itemselector-hide {display: none;}.itemselector-item-self {font-size: 14px;line-height: 34px;padding: 8px;background-color: rgba(0,0,0,0);pointer-events: auto;}.itemselector-toggle {position: relative;visibility: hidden;}.itemselector-toggle.itemselector-show {visibility: visible;}.itemselector-toggle:before {content: "\\25BC";width: 1em;display: inline-block;position: relative;}.itemselector-item-collapsed>.itemselector-item-self>.itemselector-toggle:before {content: "\\25B6";}.itemselector-item-collapsed>.itemselector-item-child>.itemselector-item {display: none;}.itemselector-text {pointer-events: none;margin-left: 0.5em;}.itemselector-container.light {--itemselector-color: #000;--itemselector-bgcolor-1: #dddddd;--itemselector-bgcolor-0: #e2e2e2;--itemselector-bgcolor-2: #cdcdcd;--itemselector-bgcolor-3: #bdbdbd;--itemselector-btnclose-bgcolor: #00bcd4;--itemselector-spliter-color: rgba(0,0,0,0.28);}.itemselector-container.dark {--itemselector-color: #fff;--itemselector-bgcolor-0: #1d1d1d;--itemselector-bgcolor-1: #222222;--itemselector-bgcolor-2: #323232;--itemselector-bgcolor-3: #424242;--itemselector-btnclose-bgcolor: #00bcd4;--itemselector-spliter-color: rgba(255,255,255,0.28);}.itemselector-container {box-shadow: 0 3px 15px rgb(0 0 0 / 20%), 0 6px 6px rgb(0 0 0 / 14%), 0 9px 3px -6px rgb(0 0 0 / 12%);color: var(--itemselector-color);background-color: var(--itemselector-bgcolor-0);}.itemselector-header {border-bottom: 1px solid var(--itemselector-spliter-color);}.itemselector-body {scrollbar-color: var(--itemselector-bgcolor-2) var(--itemselector-bgcolor-1);}.itemselector-body:hover {scrollbar-color: var(--itemselector-bgcolor-3) var(--itemselector-bgcolor-1);}.itemselector-body::-webkit-scrollbar {background-color: var(--itemselector-bgcolor-1);}.itemselector-body::-webkit-scrollbar-corner {background-color: var(--itemselector-bgcolor-1);}.itemselector-body::-webkit-scrollbar-thumb, .itemselector-body::-webkit-scrollbar-button {background-color: var(--itemselector-bgcolor-2);}.itemselector-body::-webkit-scrollbar-thumb:hover, .itemselector-body::-webkit-scrollbar-button:hover {background-color: var(--itemselector-bgcolor-3);}.itemselector-item-background {transition-duration: 0.3s;border-top: 1px solid var(--itemselector-spliter-color);}.itemselector-item-background.itemselector-item-hover {background-color: var(--itemselector-bgcolor-2);}.itemselector-button {background-color: var(--itemselector-btnclose-bgcolor);color: var(--itemselector-color);}.itemselector-button.itemselector-button-close {background-color: var(--itemselector-bgcolor-2);}.itemselector-button.itemselector-button-close:hover {background-color: var(--itemselector-bgcolor-3);}';
			const style = $CrE('style');
			style.innerHTML = css;
			cssParent.appendChild(style);

			function ok_onClick(e) {
				if (!DATA.showing) {
					DoLog(LogLevel.Warning, 'ok_onClick invoked when dialog is not showing');
					return false;
				}
				if (!DATA.options) {
					DoLog(LogLevel.Warning, 'DATA.options missing while ok_onClick invoked');
					return false;
				}
				typeof DATA.options.onok === 'function' && DATA.options.onok.call(this, e, getSelectedItems());
				close();
			}

			function cancel_onClick(e) {
				if (!DATA.showing) {
					DoLog(LogLevel.Warning, 'cancel_onClick invoked when dialog is not showing');
					return false;
				}
				if (!DATA.options) {
					DoLog(LogLevel.Warning, 'DATA.options missing while cancel_onClick invoked');
					return false;
				}
				typeof DATA.options.oncancel === 'function' && DATA.options.oncancel.call(this, e, getSelectedItems());
				close();
			}

			function close_onClick(e) {
				if (!DATA.showing) {
					DoLog(LogLevel.Warning, 'close_onClick invoked when dialog is not showing');
					return false;
				}
				if (!DATA.options) {
					DoLog(LogLevel.Warning, 'DATA.options missing while close_onClick invoked');
					return false;
				}
				typeof DATA.options.onclose === 'function' && DATA.options.onclose.call(this, e, getSelectedItems());
				close();
			}
		}

		function show(json, options={title: ''}) {
			// Status check & update
			if (!json) {
				DoLog(LogLevel.Error, 'json missing');
				return false;
			}
			if (DATA.showing) {
				DoLog(LogLevel.Error, 'show invoked while DATA.showing === true');
				return false;
			}
			DATA.showing = true;
			DATA.options = options;
			DATA.json = structuredClone(json);
			DATA.data = makeData(json);

			// elements
			const {container, header, title, body, footer, bglist, list} = elements;

			// cleanings
			[...list.children].forEach(c => c.remove());
			[...bglist.children].forEach(c => c.remove());

			// make new <ul>
			const ul = makeListItem(json);
			ul.classList.add('itemselector-item-root');
			list.appendChild(ul);

			// configure with options
			options.hasOwnProperty('title') && (title.innerText = options.title);

			// display container
			updateElementSelect();
			container.classList.add('itemselector-show');

			return IS;

			function makeListItem(json_item, path=[]) {
				const item = pathItem(path);
				const hasChild = Array.isArray(item.children);

				// create new div
				const div = item.elements.div = $CrE('div');
				const self_container = item.elements.self_container = $CrE('div');
				const child_container = item.elements.child_container = $CrE('div');
				const background = item.elements.background = $CrE('div');
				div.classList.add('itemselector-item');
				self_container.classList.add('itemselector-item-self');
				child_container.classList.add('itemselector-item-child');
				background.classList.add('itemselector-item-background');
				hasChild && div.classList.add('itemselector-item-parent');
				$AEL(background, 'mouseenter', e => background.classList.add('itemselector-item-hover'));
				$AEL(background, 'mouseleave', e => background.classList.remove('itemselector-item-hover'));
				$AEL(self_container, 'mouseenter', e => background.classList.add('itemselector-item-hover'));
				$AEL(self_container, 'mouseleave', e => background.classList.remove('itemselector-item-hover'));
				bglist.appendChild(background);
				div.appendChild(self_container);
				div.appendChild(child_container);

				// triangle toggle for folder items
				const toggle = item.elements.toggle = $CrE('a');
				toggle.classList.add('itemselector-toggle');
				hasChild && toggle.classList.add('itemselector-show');
				$AEL(toggle, 'click', e => {
					destroyEvent(e);
					const collapsed = [...div.classList].includes('itemselector-item-collapsed');
					div.classList[collapsed ? 'remove' : 'add']('itemselector-item-collapsed');
					toggleBackground(item);

					function toggleBackground(item) {
						if (Array.isArray(item.children)) {
							for (const child of item.children) {
								child.elements.background.classList[collapsed ? 'remove' : 'add']('itemselector-hide');
								toggleBackground(child);
							}
						}
					}
				});
				self_container.appendChild(toggle);

				// checkbox for selecting
				const checkbox = item.elements.checkbox = $CrE('input');
				checkbox.type = 'checkbox';
				checkbox.classList.add('itemselector-checker');
				$AEL(checkbox, 'change', checkbox_onChange);
				self_container.appendChild(checkbox);

				// check checkbox when self_container or background block onclick
				const clickTargets = [self_container, background]
				clickTargets.forEach(elm => $AEL(elm, 'click', function(e) {
					if (clickTargets.includes(e.target)) {
						checkbox.checked = !checkbox.checked;
						checkbox_onChange();
					}
				}));

				// item text
				const text = item.elements.text = $CrE('span');
				text.classList.add('itemselector-text');
				text.innerText = json_item.text;
				self_container.appendChild(text);

				// make child items
				if (hasChild) {
					item.elements.children = [];
					for (let i = 0; i < json_item.children.length; i++) {
						const childItem = makeListItem(json_item.children[i], [...path, i]);
						item.elements.children.push(childItem);
						child_container.appendChild(childItem);
					}
				}

				return div;

				function checkbox_onChange(e) {
					// set select status
					item.selected = checkbox.checked;

					// update element
					updateElementSelect();
				}
			}
		}

		function close() {
			if (!DATA.showing) {
				DoLog(LogLevel.Error, 'show invoked while DATA.showing === false');
				return false;
			}
			DATA.showing = false;
			DATA.options = null;

			elements.container.classList.remove('itemselector-show');
		}

		function setTheme(theme='light') {
			const THEMES = ['light', 'dark'];
			const root = elements.container;
			if (THEMES.includes(theme)) {
				THEMES.filter(t => t !== theme).forEach(t => root.classList.remove(t));
				root.classList.add(theme);
				return true;
			} else {
				return false;
			}
		}

		function updateElementSelect() {
			//const data = DATA.data;
			update(DATA.data);

			function update(item) {
				// item elements
				const elements = item.elements;
				const checkbox = elements.checkbox;

				// props
				checkbox.checked = item.selected;
				checkbox.indeterminate = item.childSelected && !item.selected;

				// update children
				if (Array.isArray(item.children)) {
					for (const child of item.children) {
						update(child);
					}
				}
			}
		}

		function getSelectedItems() {
			const json = structuredClone(DATA.json);
			const data = DATA.data;
			const MARK = Symbol('cut-mark');

			mark(json, data);
			return cut(json);

			function mark(json_item, data_item) {
				if (!data_item.selected && !data_item.childSelected) {
					json_item[MARK] = true;
				} else if (Array.isArray(data_item.children)) {
					for (let i = 0; i < data_item.children.length; i++) {
						mark(json_item.children[i], data_item.children[i]);
					}
				}
			}

			function cut(json_item) {
				if (json_item[MARK]) {
					return null;
				} else {
					const children = json_item.children;
					if (Array.isArray(children)) {
						for (const cutchild of children.filter(child => child[MARK])) {
							children.splice(children.indexOf(cutchild), 1);
						}
						children.forEach((child, i) => {
							children[i] = cut(child);
						});
					}
					return json_item;
				}
			}
		}

		function pathItem(path) {
			return pathObj(DATA.data, path);
		}

		function pathObj(obj, path) {
			let target = obj;
			const _path = [...path];
			while (_path.length) {
				target = target.children[_path.shift()];
			}
			return target;
		}

		function makeData(json) {
			return proxyItemData(makeItemData(json));

			function proxyItemData(data) {
				return typeof data === 'object' && data !== null ? new Proxy(data, {
					get: function(target, property, receiver) {
						const value = target[property];
						const noproxy = typeof value === 'object' && value !== null && value['__NOPROXY__'] === true;
						return noproxy ? value : proxyItemData(value);
					},
					set: function(target, property, value, receiver) {
						switch (property) {
							case 'selected':
								// set item and its children's selected status by rule
								select(target, value, !value);
								break;
							default:
								// setting other props are not allowed
								break;
						}
						return true;

						function select(item, selected) {
							// write item
							item.selected = selected;

							// write children selected
							select_children(item)

							// write parent selected
							select_parent(item);

							// calculate children childSelected
							childSelected_children(item);

							// calculate parent childSelected
							childSelected_parent(item);

							function select_children(item) {
								if (Array.isArray(item.children)) {
									for (const child of item.children) {
										if (child.selected !== selected) {
											child.selected = selected;
											select_children(child, selected);
										}
									}
								}
							}

							function select_parent(item) {
								if (item.parent) {
									const parent = item.parent;
									const selected = parent.children.every(child => child.selected);
									if (parent.selected !== selected) {
										parent.selected = selected;
										select_parent(parent);
									}
								}
							}

							function childSelected_children(item) {
								if (Array.isArray(item.children)) {
									for (const child of item.children) {
										childSelected_children(child);
									}
									item.childSelected = item.children.some(child => child.selected || child.childSelected);
								} else {
									item.childSelected = false;
								}
							}

							function childSelected_parent(item) {
								if (item.parent) {
									const parent = item.parent;
									const childSelected = parent.children.some(child => child.selected || child.childSelected);
									if (parent.childSelected !== childSelected) {
										parent.childSelected = childSelected;
										childSelected_parent(parent);
									}
								}
							}
						}
					}
				}) : data;
			}

			function makeItemData(json, parent=null) {
				const hasChild = Array.isArray(json.children);
				const item = {};
				item.elements = {__NOPROXY__:true};
				item.selected = true;
				item.childSelected = hasChild && json.children.length > 0;
				item.parent = parent !== null && typeof parent === 'object' ? parent : null;
				if (hasChild) {
					item.children = json.children.map(child => makeItemData(child, item));
				}
				return item;
			}
		}

		function defineGetter(obj, prop, getter) {
			Object.defineProperty(obj, prop, {
				get: getter,
				set: v => true,
				configurable: false,
				enumerable: true,
			});
		}
	}

	// Basic functions
	// querySelector
	function $() {
		switch(arguments.length) {
			case 2:
				return arguments[0].querySelector(arguments[1]);
				break;
			default:
				return document.querySelector(arguments[0]);
		}
	}
	// querySelectorAll
	function $All() {
		switch(arguments.length) {
			case 2:
				return arguments[0].querySelectorAll(arguments[1]);
				break;
			default:
				return document.querySelectorAll(arguments[0]);
		}
	}
	// createElement
	function $CrE() {
		switch(arguments.length) {
			case 2:
				return arguments[0].createElement(arguments[1]);
				break;
			default:
				return document.createElement(arguments[0]);
		}
	}
	// addEventListener
	function $AEL(...args) {
		const target = args.shift();
		return target.addEventListener.apply(target, args);
	}

	// Just stopPropagation and preventDefault
	function destroyEvent(e) {
		if (!e) {return false;};
		if (!e instanceof Event) {return false;};
		e.stopPropagation();
		e.preventDefault();
	}

	function parseArgs(args, rules, defaultValues=[]) {
		// args and rules should be array, but not just iterable (string is also iterable)
		if (!Array.isArray(args) || !Array.isArray(rules)) {
			throw new TypeError('parseArgs: args and rules should be array')
		}

		// fill rules[0]
		(!Array.isArray(rules[0]) || rules[0].length === 1) && rules.splice(0, 0, []);

		// max arguments length
		const count = rules.length - 1;

		// args.length must <= count
		if (args.length > count) {
			throw new TypeError(`parseArgs: args has more elements(${args.length}) longer than ruless'(${count})`);
		}

		// rules[i].length should be === i if rules[i] is an array, otherwise it should be a function
		for (let i = 1; i <= count; i++) {
			const rule = rules[i];
			if (Array.isArray(rule)) {
				if (rule.length !== i) {
					throw new TypeError(`parseArgs: rules[${i}](${rule}) should have ${i} numbers, but given ${rules[i].length}`);
				}
				if (!rule.every((num) => (typeof num === 'number' && num <= count))) {
					throw new TypeError(`parseArgs: rules[${i}](${rule}) should contain numbers smaller than count(${count}) only`);
				}
			} else if (typeof rule !== 'function') {
				throw new TypeError(`parseArgs: rules[${i}](${rule}) should be an array or a function.`)
			}
		}

		// Parse
		const rule = rules[args.length];
		let parsed;
		if (Array.isArray(rule)) {
			parsed = [...defaultValues];
			for (let i = 0; i < rule.length; i++) {
				parsed[rule[i]-1] = args[i];
			}
		} else {
			parsed = rule(args, defaultValues);
		}
		return parsed;
	}

	function MakeReadonlyObj(val) {
		return isObject(val) ? new Proxy(val, {
			get: function(target, property, receiver) {
				return MakeReadonlyObj(target[property]);
			},
			set: function(target, property, value, receiver) {
				return true;
			}
		}) : val;

		function isObject(value) {
			return ['object', 'function'].includes(typeof value) && value !== null;
		}
	}

	// Returns a random string
	function randstr(length=16, nums=true, cases=true) {
		const all = 'abcdefghijklmnopqrstuvwxyz' + (nums ? '0123456789' : '') + (cases ? 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' : '');
		return Array(length).fill(0).reduce(pre => (pre += all.charAt(randint(0, all.length-1))), '');
	}

	function randint(min, max) {
		return Math.floor(Math.random() * (max - min + 1)) + min;
	}
}) ();