annotate mrjunejune/src/index.js @ 256:30c2196d03d4

[site] Integrate Zenbu themes and components Co-authored-by: Copilot <[email protected]>
author MrJuneJune <me@mrjunejune.com>
date Tue, 04 Aug 2026 16:49:01 -0700
parents bcc76a156aea
children 60a876c4587a
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1 const THEME_STORAGE_KEY = 'theme-preference';
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2 const THEMES = ['auto', 'paper', 'ink', 'playful'];
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3 const THEME_LABELS = {
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4 auto: 'Auto',
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5 paper: 'Paper',
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6 ink: 'Ink',
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7 playful: 'Playful',
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8 };
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9
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10 function normalizeTheme(value) {
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11 if (value === 'light') return 'paper';
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12 if (value === 'dark') return 'ink';
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13 return THEMES.includes(value) ? value : 'auto';
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14 }
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15
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16 function getThemePreference() {
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17 return normalizeTheme(localStorage.getItem(THEME_STORAGE_KEY));
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18 }
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19
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20 function updateThemeColor() {
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21 const probe = document.createElement('span');
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22 probe.style.background = 'var(--zen-color-canvas)';
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23 document.body.append(probe);
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24 const color = getComputedStyle(probe).backgroundColor;
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25 probe.remove();
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26 document.querySelector('meta[name="theme-color"]')
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27 ?.setAttribute('content', color);
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28 }
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30 function updateThemeControl(preference) {
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31 const toggle = document.querySelector('#themeToggle');
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32 const label = document.querySelector('#themeName');
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33 if (label) label.textContent = THEME_LABELS[preference];
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34 toggle?.setAttribute(
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35 'aria-label',
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36 `Change site theme. Current theme: ${THEME_LABELS[preference]}`,
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37 );
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38 }
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39
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40 function applyTheme(value, persist = false) {
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41 const preference = normalizeTheme(value);
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42 const root = document.documentElement;
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43 root.classList.remove('light-mode', 'dark', 'auto');
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44 if (preference === 'auto') delete root.dataset.zenTheme;
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45 else root.dataset.zenTheme = preference;
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46 if (persist) localStorage.setItem(THEME_STORAGE_KEY, preference);
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47 updateThemeControl(preference);
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48 requestAnimationFrame(updateThemeColor);
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49 document.dispatchEvent(new CustomEvent('zen-theme-change', {
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50 detail: { theme: preference },
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51 }));
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52 return preference;
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53 }
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54
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55 const currentPreference = applyTheme(getThemePreference());
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56 if (localStorage.getItem(THEME_STORAGE_KEY) !== currentPreference) {
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57 localStorage.setItem(THEME_STORAGE_KEY, currentPreference);
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58 }
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59
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60 document.querySelector('#themeToggle')?.addEventListener('click', () => {
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61 const current = getThemePreference();
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62 const next = THEMES[(THEMES.indexOf(current) + 1) % THEMES.length];
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63 applyTheme(next, true);
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64 });
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66 matchMedia('(prefers-color-scheme: dark)').addEventListener('change', () => {
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67 if (getThemePreference() === 'auto') updateThemeColor();
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68 });
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69
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70 window.MrJuneJuneTheme = Object.freeze({
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71 apply: theme => applyTheme(theme, true),
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72 current: getThemePreference,
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73 themes: [...THEMES],
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74 });