🎨 feat: implement theme toggle functionality and update styles #166
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| (function () { | ||
| var storageKey = 'pythonie-theme'; | ||
| var className = 'dark'; | ||
| var root = document.documentElement; | ||
| var toggleButton; | ||
|
|
||
| function getStoredTheme() { | ||
| try { | ||
| return window.localStorage ? localStorage.getItem(storageKey) : null; | ||
| } catch (e) { | ||
| return null; | ||
| } | ||
| } | ||
|
|
||
| function setStoredTheme(theme) { | ||
| try { | ||
| if (window.localStorage) { | ||
| localStorage.setItem(storageKey, theme); | ||
| } | ||
| } catch (e) { | ||
| /* ignore storage errors */ | ||
| } | ||
| } | ||
|
|
||
| function prefersDark() { | ||
| return window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches; | ||
| } | ||
|
|
||
| function getActiveTheme() { | ||
| return getStoredTheme() || (prefersDark() ? 'dark' : 'light'); | ||
| } | ||
|
|
||
| function applyTheme(theme) { | ||
| if (theme === 'dark') { | ||
| root.classList.add(className); | ||
| } else { | ||
| root.classList.remove(className); | ||
| theme = 'light'; | ||
| } | ||
| root.dataset.theme = theme; | ||
| updateToggle(theme); | ||
| } | ||
|
|
||
| function updateToggle(theme) { | ||
| if (!toggleButton) return; | ||
| var isDark = theme === 'dark'; | ||
| toggleButton.setAttribute('aria-pressed', isDark); | ||
| toggleButton.classList.toggle('is-dark', isDark); | ||
| var label = toggleButton.querySelector('[data-theme-label]'); | ||
| if (label) label.textContent = isDark ? 'Light' : 'Dark'; | ||
| } | ||
|
|
||
| function handleToggle() { | ||
| var isDark = root.classList.contains(className); | ||
| var nextTheme = isDark ? 'light' : 'dark'; | ||
| applyTheme(nextTheme); | ||
| setStoredTheme(nextTheme); | ||
| } | ||
|
|
||
| function initThemeToggle() { | ||
| toggleButton = document.querySelector('[data-theme-toggle]'); | ||
| if (!toggleButton) { | ||
| return; | ||
| } | ||
| toggleButton.addEventListener('click', handleToggle); | ||
| applyTheme(getActiveTheme()); | ||
| } | ||
|
|
||
| document.addEventListener('DOMContentLoaded', initThemeToggle); | ||
| })(); |
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Using variables is a nice refactor even outside of outside of the new theme!