402 lines
13 KiB
JavaScript
402 lines
13 KiB
JavaScript
$( document ).ready(function() {
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// url
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var url = window.location.pathname;
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// Fix back button cache problem
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window.onunload = function(){};
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// Set theme
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var theme = store.get('mdbook-theme');
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if (theme === null || theme === undefined) { theme = 'light'; }
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set_theme(theme);
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// Syntax highlighting Configuration
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hljs.configure({
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tabReplace: ' ', // 4 spaces
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languages: [], // Languages used for auto-detection
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});
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if (window.ace) {
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// language-rust class needs to be removed for editable
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// blocks or highlightjs will capture events
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$('code.editable').removeClass('language-rust');
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$('code').not('.editable').each(function(i, block) {
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hljs.highlightBlock(block);
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});
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} else {
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$('code').each(function(i, block) {
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hljs.highlightBlock(block);
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});
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}
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// Adding the hljs class gives code blocks the color css
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// even if highlighting doesn't apply
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$('code').addClass('hljs');
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var KEY_CODES = {
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PREVIOUS_KEY: 37,
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NEXT_KEY: 39
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};
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$(document).on('keydown', function (e) {
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if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) { return; }
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switch (e.keyCode) {
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case KEY_CODES.NEXT_KEY:
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e.preventDefault();
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if($('.nav-chapters.next').length) {
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window.location.href = $('.nav-chapters.next').attr('href');
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}
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break;
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case KEY_CODES.PREVIOUS_KEY:
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e.preventDefault();
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if($('.nav-chapters.previous').length) {
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window.location.href = $('.nav-chapters.previous').attr('href');
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}
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break;
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}
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});
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// Interesting DOM Elements
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var sidebar = $("#sidebar");
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// Help keyboard navigation by always focusing on page content
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$(".page").focus();
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// Toggle sidebar
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$("#sidebar-toggle").click(sidebarToggle);
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// Scroll sidebar to current active section
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var activeSection = sidebar.find(".active");
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if(activeSection.length) {
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sidebar.scrollTop(activeSection.offset().top);
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}
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// Theme button
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$("#theme-toggle").click(function(){
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if($('.theme-popup').length) {
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$('.theme-popup').remove();
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} else {
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var popup = $('<div class="theme-popup"></div>')
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.append($('<div class="theme" id="light">Light <span class="default">(default)</span><div>'))
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.append($('<div class="theme" id="rust">Rust</div>'))
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.append($('<div class="theme" id="coal">Coal</div>'))
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.append($('<div class="theme" id="navy">Navy</div>'))
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.append($('<div class="theme" id="ayu">Ayu</div>'));
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popup.insertAfter(this);
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$('.theme').click(function(){
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var theme = $(this).attr('id');
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set_theme(theme);
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});
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}
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});
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// Hide theme selector popup when clicking outside of it
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$(document).click(function(event){
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var popup = $('.theme-popup');
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if(popup.length) {
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var target = $(event.target);
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if(!target.closest('.theme').length && !target.closest('#theme-toggle').length) {
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popup.remove();
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}
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}
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});
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function set_theme(theme) {
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let ace_theme;
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if (theme == 'coal' || theme == 'navy') {
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$("[href='ayu-highlight.css']").prop('disabled', true);
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$("[href='tomorrow-night.css']").prop('disabled', false);
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$("[href='highlight.css']").prop('disabled', true);
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ace_theme = "ace/theme/tomorrow_night";
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} else if (theme == 'ayu') {
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$("[href='ayu-highlight.css']").prop('disabled', false);
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$("[href='tomorrow-night.css']").prop('disabled', true);
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$("[href='highlight.css']").prop('disabled', true);
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ace_theme = "ace/theme/tomorrow_night";
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} else {
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$("[href='ayu-highlight.css']").prop('disabled', true);
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$("[href='tomorrow-night.css']").prop('disabled', true);
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$("[href='highlight.css']").prop('disabled', false);
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ace_theme = "ace/theme/dawn";
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}
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if (window.ace && window.editors) {
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window.editors.forEach(function(editor) {
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editor.setTheme(ace_theme);
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});
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}
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store.set('mdbook-theme', theme);
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$('body').removeClass().addClass(theme);
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}
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// Hide Rust code lines prepended with a specific character
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var hiding_character = "#";
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$("code.language-rust").each(function(i, block){
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var code_block = $(this);
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var pre_block = $(this).parent();
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// hide lines
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var lines = code_block.html().split("\n");
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var first_non_hidden_line = false;
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var lines_hidden = false;
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for(var n = 0; n < lines.length; n++){
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if($.trim(lines[n])[0] == hiding_character){
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if(first_non_hidden_line){
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lines[n] = "<span class=\"hidden\">" + "\n" + lines[n].replace(/(\s*)# ?/, "$1") + "</span>";
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}
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else {
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lines[n] = "<span class=\"hidden\">" + lines[n].replace(/(\s*)# ?/, "$1") + "\n" + "</span>";
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}
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lines_hidden = true;
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}
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else if(first_non_hidden_line) {
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lines[n] = "\n" + lines[n];
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}
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else {
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first_non_hidden_line = true;
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}
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}
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code_block.html(lines.join(""));
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// If no lines were hidden, return
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if(!lines_hidden) { return; }
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// add expand button
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pre_block.prepend("<div class=\"buttons\"><i class=\"fa fa-expand\" title=\"Show hidden lines\"></i></div>");
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pre_block.find("i").click(function(e){
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if( $(this).hasClass("fa-expand") ) {
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$(this).removeClass("fa-expand").addClass("fa-compress");
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$(this).attr("title", "Hide lines");
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pre_block.find("span.hidden").removeClass("hidden").addClass("unhidden");
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}
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else {
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$(this).removeClass("fa-compress").addClass("fa-expand");
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$(this).attr("title", "Show hidden lines");
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pre_block.find("span.unhidden").removeClass("unhidden").addClass("hidden");
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}
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});
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});
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$("pre code").each(function(i, block){
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var pre_block = $(this).parent();
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if( !pre_block.hasClass('playpen') ) {
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var buttons = pre_block.find(".buttons");
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if(buttons.length == 0) {
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pre_block.prepend("<div class=\"buttons\"></div>");
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buttons = pre_block.find(".buttons");
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}
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buttons.prepend("<i class=\"fa fa-copy clip-button\"><i class=\"tooltiptext\"></i></i>");
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buttons.find(".clip-button").mouseout(function(e){
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hideTooltip(e.currentTarget);
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});
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}
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});
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// Process playpen code blocks
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$(".playpen").each(function(block){
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var pre_block = $(this);
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// Add play button
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var buttons = pre_block.find(".buttons");
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if( buttons.length === 0 ) {
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pre_block.prepend("<div class=\"buttons\"></div>");
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buttons = pre_block.find(".buttons");
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}
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buttons.prepend("<i class=\"fa fa-play play-button hidden\" title=\"Run this code\"></i>");
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buttons.prepend("<i class=\"fa fa-copy clip-button\" title=\"Copy to clipboard\"><i class=\"tooltiptext\"></i></i>");
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let code_block = pre_block.find("code").first();
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if (window.ace && code_block.hasClass("editable")) {
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buttons.prepend("<i class=\"fa fa-history reset-button\" title=\"Undo changes\"></i>");
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}
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buttons.find(".play-button").click(function(e){
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run_rust_code(pre_block);
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});
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buttons.find(".clip-button").mouseout(function(e){
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hideTooltip(e.currentTarget);
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});
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buttons.find(".reset-button").click(function() {
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if (!window.ace) { return; }
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let editor = window.ace.edit(code_block.get(0));
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editor.setValue(editor.originalCode);
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editor.clearSelection();
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});
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});
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var clipboardSnippets = new Clipboard('.clip-button', {
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text: function(trigger) {
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hideTooltip(trigger);
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let playpen = $(trigger).parents("pre");
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return playpen_text(playpen);
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}
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});
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clipboardSnippets.on('success', function(e) {
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e.clearSelection();
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showTooltip(e.trigger, "Copied!");
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});
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clipboardSnippets.on('error', function(e) {
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showTooltip(e.trigger, "Clipboard error!");
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});
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$.ajax({
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url: "https://play.rust-lang.org/meta/crates",
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method: "POST",
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crossDomain: true,
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dataType: "json",
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contentType: "application/json",
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success: function(response){
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// get list of crates available in the rust playground
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let playground_crates = response.crates.map(function(item) {return item["id"];} );
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$(".playpen").each(function(block) {
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handle_crate_list_update($(this), playground_crates);
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});
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},
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});
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});
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function playpen_text(playpen) {
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let code_block = playpen.find("code").first();
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if (window.ace && code_block.hasClass("editable")) {
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let editor = window.ace.edit(code_block.get(0));
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return editor.getValue();
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} else {
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return code_block.get(0).textContent;
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}
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}
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function handle_crate_list_update(playpen_block, playground_crates) {
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// update the play buttons after receiving the response
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update_play_button(playpen_block, playground_crates);
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// and install on change listener to dynamically update ACE editors
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if (window.ace) {
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let code_block = playpen_block.find("code").first();
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if (code_block.hasClass("editable")) {
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let editor = window.ace.edit(code_block.get(0));
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editor.on("change", function(e){
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update_play_button(playpen_block, playground_crates);
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});
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}
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}
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}
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// updates the visibility of play button based on `no_run` class and
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// used crates vs ones available on http://play.rust-lang.org
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function update_play_button(pre_block, playground_crates) {
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var play_button = pre_block.find(".play-button");
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var classes = pre_block.find("code").attr("class").split(" ");
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// skip if code is `no_run`
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if (classes.indexOf("no_run") > -1) {
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play_button.addClass("hidden");
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return;
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}
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// get list of `extern crate`'s from snippet
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var txt = playpen_text(pre_block);
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var re = /extern\s+crate\s+([a-zA-Z_0-9]+)\s*;/g;
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var snippet_crates = [];
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while (item = re.exec(txt)) {
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snippet_crates.push(item[1]);
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}
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// check if all used crates are available on play.rust-lang.org
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var all_available = snippet_crates.every(function(elem) {
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return playground_crates.indexOf(elem) > -1;
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});
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if (all_available) {
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play_button.removeClass("hidden");
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} else {
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play_button.addClass("hidden");
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}
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}
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function hideTooltip(elem) {
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elem.firstChild.innerText="";
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elem.setAttribute('class', 'fa fa-copy clip-button');
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}
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function showTooltip(elem, msg) {
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elem.firstChild.innerText=msg;
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elem.setAttribute('class', 'fa fa-copy tooltipped');
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}
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function sidebarToggle() {
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var html = $("html");
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if ( html.hasClass("sidebar-hidden") ) {
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html.removeClass("sidebar-hidden").addClass("sidebar-visible");
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store.set('mdbook-sidebar', 'visible');
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} else if ( html.hasClass("sidebar-visible") ) {
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html.removeClass("sidebar-visible").addClass("sidebar-hidden");
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store.set('mdbook-sidebar', 'hidden');
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} else {
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if($("#sidebar").position().left === 0){
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html.addClass("sidebar-hidden");
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store.set('mdbook-sidebar', 'hidden');
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} else {
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html.addClass("sidebar-visible");
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store.set('mdbook-sidebar', 'visible');
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}
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}
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}
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function run_rust_code(code_block) {
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var result_block = code_block.find(".result");
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if(result_block.length === 0) {
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code_block.append("<code class=\"result hljs language-bash\"></code>");
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result_block = code_block.find(".result");
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}
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let text = playpen_text(code_block);
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var params = {
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channel: "stable",
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mode: "debug",
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crateType: "bin",
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tests: false,
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code: text,
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}
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if(text.indexOf("#![feature") !== -1) {
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params.channel = "nightly";
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}
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result_block.text("Running...");
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$.ajax({
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url: "https://play.rust-lang.org/execute",
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method: "POST",
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crossDomain: true,
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dataType: "json",
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contentType: "application/json",
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data: JSON.stringify(params),
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timeout: 15000,
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success: function(response){
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result_block.text(response.success ? response.stdout : response.stderr);
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},
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error: function(qXHR, textStatus, errorThrown){
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result_block.text("Playground communication " + textStatus);
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},
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});
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}
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