Screen Display Log

ipadやiphone用に、画面にログを出力する。console.log() の代わりに screenLog() で利用する。

Verze ze dne 10. 05. 2026. Zobrazit nejnovější verzi.

Tento skript by neměl být instalován přímo. Jedná se o knihovnu, kterou by měly jiné skripty využívat pomocí meta příkazu // @require https://update.greasyfork.org/scripts/577436/1820900/Screen%20Display%20Log.js

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Screen Display Log
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  ipadやiphone用に、画面にログを出力する。console.log() の代わりに screenLog() で利用する。
// @grant        none
// ==/UserScript==

(function(window) {
    'use strict';

    /**
     * 画面端にデバッグ用UIを表示するクラス
     */
    class ScreenLogger {
        constructor() {
            this.id = 'tm-debug-console';
            this.container = null;
            this.logArea = null;
            this._setup();
        }

        /**
         * 初期セットアップ
         */
        _setup() {
            if (document.getElementById(this.id)) return;
            this._injectStyles();
            this._createUI();
        }

        /**
         * CSSを<style>タグとして注入(インラインスタイルの撤廃)
         */
        _injectStyles() {
            const style = document.createElement('style');
            style.textContent = `
            #${this.id} { position: fixed; bottom: 10px; right: 10px; width: 280px; max-height: 250px; background-color: rgba(0, 0, 0, 0.85); color: #00ff00; font-size: 11px; font-family: monospace; padding: 5px; border-radius: 5px; overflow-y: auto; z-index: 999999; pointer-events: auto; border: 1px solid #444; box-shadow: 0 0 10px rgba(0,0,0,0.5); }
            #${this.id} .tm-header { border-bottom: 1px solid #444; margin-bottom: 5px; padding-bottom: 3px; display: flex; justify-content: space-between; align-items: center; }
            #${this.id} .tm-header b { color: #fff; }
            #${this.id} button { font-size: 9px; cursor: pointer; margin-left: 4px; }
            #${this.id} .tm-log-area { display: block; }
            #${this.id} .tm-line { border-bottom: 1px solid #222; padding: 2px 0; white-space: pre-wrap; word-break: break-all; }
            #${this.id}.minimized { height: 25px; overflow: hidden; }
            #${this.id}.minimized .tm-log-area { display: none; }
            `;
            document.head.appendChild(style);
        }

        /**
         * UI要素の構築
         */
        _createUI() {
            this.container = document.createElement('div');
            this.container.id = this.id;

            const header = document.createElement('div');
            header.className = 'tm-header';
            header.innerHTML = `
                <span><b>[DEBUG]</b></span>
                <div>
                    <button id="tm-clear-log">Clear</button>
                    <button id="tm-toggle-log">Min</button>
                </div>
            `;

            this.logArea = document.createElement('div');
            this.logArea.className = 'tm-log-area';

            this.container.appendChild(header);
            this.container.appendChild(this.logArea);
            document.body.appendChild(this.container);

            // イベントリスナーの登録
            this.container.querySelector('#tm-clear-log').onclick = () => this.clear();
            this.container.querySelector('#tm-toggle-log').onclick = (e) => this._toggle(e.target);
        }

        /**
         * 表示・非表示の切り替え
         */
        _toggle(btn) {
            const isMinimized = this.container.classList.toggle('minimized');
            btn.innerText = isMinimized ? 'Max' : 'Min';
        }

        /**
         * ログの消去
         */
        clear() {
            if (this.logArea) this.logArea.innerHTML = '';
        }

        /**
         * 引数を文字列に整形(HTML要素、オブジェクト対応)
         */
        _format(arg) {
            if (arg === null) return 'null';
            if (arg === undefined) return 'undefined';

            if (arg instanceof HTMLElement) {
                const id = arg.id ? `#${arg.id}` : '';
                const classes = arg.className ? `.${Array.from(arg.classList).join('.')}` : '';
                return `<${arg.tagName.toLowerCase()}${id}${classes}>`;
            }

            if (typeof arg === 'object') {
                try {
                    return JSON.stringify(arg);
                } catch (e) {
                    return String(arg);
                }
            }

            return String(arg);
        }

        /**
         * 画面にログを出力
         */
        log(...args) {
            const msg = args.map(arg => this._format(arg)).join(' ');
            const line = document.createElement('div');
            line.className = 'tm-line';
            line.innerText = `> ${msg}`;

            this.logArea.appendChild(line);
            this.container.scrollTop = this.container.scrollHeight;
        }
    }

    /**
     * 外部から呼び出すためのエントリーポイント
     */
    function initOnScreenConsole() {
        const logger = new ScreenLogger();
        // 既存の「関数として呼び出す」挙動を維持するため、メソッドをバインドして返す
        return logger.log.bind(logger);
    }

    // 利用開始
    const screenLog = initOnScreenConsole();

})();