2020-02-11 19:04:59 +03:00
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<!--
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Switch the mode between dark and light.
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-->
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2020-12-04 20:40:01 +03:00
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<i class="mode-toggle fas fa-adjust"></i>
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2020-02-11 19:04:59 +03:00
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<script type="text/javascript">
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class ModeToggle {
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static get MODE_KEY() { return "mode"; }
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static get DARK_MODE() { return "dark"; }
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static get LIGHT_MODE() { return "light"; }
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constructor() {
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2020-12-10 21:20:18 +03:00
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if (this.hasMode) {
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if (this.isDarkMode) {
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2020-04-01 19:30:00 +03:00
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if (!this.isSysDarkPrefer) {
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2020-02-14 18:36:38 +03:00
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this.setDark();
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}
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} else {
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2020-04-01 19:30:00 +03:00
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if (this.isSysDarkPrefer) {
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2020-02-14 18:36:38 +03:00
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this.setLight();
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}
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2020-02-11 19:04:59 +03:00
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}
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}
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var self = this;
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2020-02-14 18:36:38 +03:00
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/* always follow the system prefers */
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2020-02-11 19:04:59 +03:00
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this.sysDarkPrefers.addListener(function() {
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2020-12-09 21:42:46 +03:00
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if (self.hasMode) {
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if (self.isDarkMode) {
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2020-04-01 19:30:00 +03:00
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if (!self.isSysDarkPrefer) {
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2020-02-14 18:36:38 +03:00
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self.setDark();
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}
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} else {
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2020-04-01 19:30:00 +03:00
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if (self.isSysDarkPrefer) {
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2020-02-14 18:36:38 +03:00
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self.setLight();
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}
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}
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self.clearMode();
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2020-02-11 19:04:59 +03:00
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}
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2020-12-09 21:42:46 +03:00
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self.updateMermaid();
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2020-02-11 19:04:59 +03:00
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});
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} /* constructor() */
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2020-02-14 18:36:38 +03:00
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setDark() {
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$('html').attr(ModeToggle.MODE_KEY, ModeToggle.DARK_MODE);
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2020-02-11 19:04:59 +03:00
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sessionStorage.setItem(ModeToggle.MODE_KEY, ModeToggle.DARK_MODE);
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}
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2020-02-14 18:36:38 +03:00
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setLight() {
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$('html').attr(ModeToggle.MODE_KEY, ModeToggle.LIGHT_MODE);
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2020-02-11 19:04:59 +03:00
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sessionStorage.setItem(ModeToggle.MODE_KEY, ModeToggle.LIGHT_MODE);
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}
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2020-02-14 18:36:38 +03:00
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clearMode() {
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$('html').removeAttr(ModeToggle.MODE_KEY);
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2020-02-11 19:04:59 +03:00
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sessionStorage.removeItem(ModeToggle.MODE_KEY);
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}
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2020-04-01 19:30:00 +03:00
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get sysDarkPrefers() { return window.matchMedia("(prefers-color-scheme: dark)"); }
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2020-02-11 19:04:59 +03:00
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2020-04-01 19:30:00 +03:00
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get isSysDarkPrefer() { return this.sysDarkPrefers.matches; }
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2020-02-11 19:04:59 +03:00
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2020-04-01 19:30:00 +03:00
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get isDarkMode() { return this.mode == ModeToggle.DARK_MODE; }
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2020-10-23 10:42:43 +03:00
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get isLightMode() { return this.mode == ModeToggle.LIGHT_MODE; }
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2020-04-01 19:30:00 +03:00
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get hasMode() { return this.mode != null; }
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get mode() { return sessionStorage.getItem(ModeToggle.MODE_KEY); }
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2020-02-11 19:04:59 +03:00
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2020-12-09 21:42:46 +03:00
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/* get the current mode on screen */
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get modeStatus() {
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if (this.isDarkMode
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|| (!this.hasMode && this.isSysDarkPrefer) ) {
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return ModeToggle.DARK_MODE;
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} else {
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return ModeToggle.LIGHT_MODE;
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}
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}
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updateMermaid() {
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2020-12-10 21:20:18 +03:00
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if (typeof mermaid !== "undefined") {
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2020-12-09 21:42:46 +03:00
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let expectedTheme = (this.modeStatus === ModeToggle.DARK_MODE? "dark" : "default");
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let config = { theme: expectedTheme };
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/* re-render the SVG › <https://github.com/mermaid-js/mermaid/issues/311#issuecomment-332557344> */
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$(".mermaid").each(function() {
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let svgCode = $(this).prev().children().html();
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$(this).removeAttr("data-processed");
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$(this).html(svgCode);
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});
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mermaid.initialize(config);
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mermaid.init(undefined, ".mermaid");
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}
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}
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2020-02-11 19:04:59 +03:00
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flipMode() {
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2020-04-01 19:30:00 +03:00
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if (this.hasMode) {
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if (this.isSysDarkPrefer) {
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2020-10-23 10:42:43 +03:00
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if (this.isLightMode) {
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2020-04-01 19:30:00 +03:00
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this.clearMode();
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} else {
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this.setLight();
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}
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2020-02-14 18:36:38 +03:00
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2020-04-01 19:30:00 +03:00
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} else {
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if (this.isDarkMode) {
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this.clearMode();
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} else {
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this.setDark();
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}
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}
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} else {
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if (this.isSysDarkPrefer) {
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this.setLight();
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} else {
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this.setDark();
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}
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2020-02-11 19:04:59 +03:00
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}
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2020-04-01 19:30:00 +03:00
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2020-12-09 21:42:46 +03:00
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this.updateMermaid();
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2020-04-01 19:30:00 +03:00
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} /* flipMode() */
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2020-02-11 19:04:59 +03:00
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} /* ModeToggle */
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let toggle = new ModeToggle();
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2020-02-14 18:36:38 +03:00
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$(".mode-toggle").click(function() {
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2020-12-09 21:42:46 +03:00
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2020-02-11 19:04:59 +03:00
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toggle.flipMode();
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2020-12-09 21:42:46 +03:00
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2020-02-11 19:04:59 +03:00
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});
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2021-11-30 19:23:22 +03:00
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$("#mode-toggle-wrapper").keyup(function(e){
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if(e.keyCode == 13) {
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toggle.flipMode();
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}
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});
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2020-10-23 10:42:43 +03:00
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</script>
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