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61 lines
2.4 KiB
JavaScript
61 lines
2.4 KiB
JavaScript
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$(document).ready(function(){
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// Update the toggle button based on current color scheme
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function updateDarkToggleButton() {
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$dark = (window.matchMedia && window.matchMedia("(prefers-color-scheme: dark)").matches);
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$("#css-toggle-btn").prop( "checked", $dark );
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}
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// Update on first load.
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updateDarkToggleButton();
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// and every time it changes
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if (window.matchMedia) window.matchMedia("(prefers-color-scheme: dark)").addListener( updateDarkToggleButton );
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// Color Scheme toggle botton
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// function to initialise the css
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function init_color_scheme_css($id, $mode) {
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if ($("#"+$id)) $("#"+$id).remove(); // remove exitsing id
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$("#"+$id+"-"+$mode).attr( {
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"data-href-light": $("#"+$id+"-light").attr("href"), // store the light CSS url
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"data-href-dark": $("#"+$id+"-dark").attr("href"), // store the dark CSS url
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"data-color-scheme": $mode, // store the mode, so that we don't re-initalise
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"media": "all", // drop the media filter
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"id": $id // rename the id (drop the `-{mode}` bit)
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} );
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$other = ($mode == 'dark') ? 'light' : 'dark';
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$("#"+$id+"-"+$other).remove();
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}
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// function to toggle the CSS
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function toggle_color_scheme_css($id, $mode) {
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// grab the new mode css href
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$href = $("#"+$id).data("href-"+$mode); // use `.data()` here, leverage the cache
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// set the CSS to the mode preference.
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$("#"+$id).attr( {
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"href": $href,
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"data-color-scheme": $mode,
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});
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}
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// toggle button click code
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$("#css-toggle-btn").bind("click", function() {
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// get current mode
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// don't use `.data("color-scheme")`, it doesn't refresh
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$mode = $("#css").attr("data-color-scheme");
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// test if this is a first time click event, if so initialise the code
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if (typeof $mode === 'undefined') {
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// not defined yet - set pref. & ask the browser if alt. is active
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$mode = 'light';
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if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) $mode = 'dark';
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init_color_scheme_css("css", $mode);
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init_color_scheme_css("css-code", $mode);
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// `init_color_scheme_css()` any other CSS
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}
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// by here we have the current mode, so swap it
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$new_mode = ($mode == 'dark') ? 'light' : 'dark';
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toggle_color_scheme_css("css", $new_mode);
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toggle_color_scheme_css("css-code", $new_mode);
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// `toggle_color_scheme_css()` any other CSS
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});
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});
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