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/*global require,module*/
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import CodeMirror from 'codemirror'
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import CodeMirrorSpellChecker from 'codemirror-spell-checker'
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import marked from 'marked'
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import 'codemirror/addon/edit/continuelist'
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import 'codemirror/addon/display/fullscreen'
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import 'codemirror/addon/mode/overlay'
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import 'codemirror/addon/display/placeholder'
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import 'codemirror/addon/selection/mark-selection'
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import './codemirror/tablist'
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import 'codemirror/mode/markdown/markdown'
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import 'codemirror/mode/gfm/gfm'
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import 'codemirror/mode/xml/xml'
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import Action from './action'
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import utils from './utils'
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import base from './base'
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import {
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bindings,
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shortcuts,
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toolbarBuiltInButtons,
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blockStyles,
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insertTexts,
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promptTexts
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} from './metadata'
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/**
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* Create icon element for toolbar.
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*/
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const createIcon = (options = {}, enableTooltips = true, shortcuts) => {
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let el = document.createElement("a");
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if(options.title && enableTooltips) {
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el.title = createTootlip(options.title, options.action, shortcuts);
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if(utils.isMac()) {
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el.title = el.title.replace("Ctrl", "⌘");
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el.title = el.title.replace("Alt", "⌥");
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}
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}
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el.tabIndex = -1;
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el.className = options.className;
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return el;
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}
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const createSep = () => {
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let el = document.createElement("i");
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el.className = "separator";
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el.innerHTML = "|";
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return el;
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}
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const createTootlip = (title, action, shortcuts) => {
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if(!action) return title
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const actionName = bindings.find(bindingName => bindingName === action)
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if(!shortcuts[actionName]) return title
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return `${title} ( ${utils.fixShortcut(shortcuts[actionName])} )`
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}
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/**
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* Interface of SimpleMDE.
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*/
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class SimpleMDE extends Action {
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constructor(options = {}) {
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super()
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// Used later to refer to it"s parent
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options.parent = this;
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// Check if Font Awesome needs to be auto downloaded
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utils.downloadFA(options)
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// Find the textarea to use
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if(options.element) this.element = options.element;
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if(options.element === null) {
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// This means that the element option was specified, but no element was found
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return console.log("SimpleMDE: Error. No element was found.");
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}
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// Handle toolbar
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if(options.toolbar === undefined) {
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// Initialize
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options.toolbar = [];
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// Loop over the built in buttons, to get the preferred order
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for(const key in toolbarBuiltInButtons) {
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if(toolbarBuiltInButtons.hasOwnProperty(key)) {
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if(key.indexOf("separator-") != -1) {
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options.toolbar.push("|");
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}
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if(toolbarBuiltInButtons[key].default === true || (options.showIcons && options.showIcons.constructor === Array && options.showIcons.indexOf(key) != -1)) {
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options.toolbar.push(key);
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}
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}
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}
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}
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// Handle status bar
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if(!options.hasOwnProperty("status")) {
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options.status = ["autosave", "lines", "words", "cursor"];
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}
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// Add default preview rendering function
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if(!options.previewRender) {
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// Note: "this" refers to the options object
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options.previewRender = plainText => options.parent.markdown(plainText)
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}
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// Set default options for parsing config
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options.parsingConfig = Object.assign({
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highlightFormatting: true // needed for toggleCodeBlock to detect types of code
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}, options.parsingConfig || {});
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// Merging the insertTexts, with the given options
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options.insertTexts = Object.assign({}, insertTexts, options.insertTexts || {});
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// Merging the promptTexts, with the given options
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options.promptTexts = promptTexts;
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// Merging the blockStyles, with the given options
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options.blockStyles = Object.assign({}, blockStyles, options.blockStyles || {});
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// Merging the shortcuts, with the given options
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options.shortcuts = Object.assign({}, shortcuts, options.shortcuts || {});
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// Change unique_id to uniqueId for backwards compatibility
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if(options.autosave != undefined && options.autosave.unique_id != undefined && options.autosave.unique_id != "")
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options.autosave.uniqueId = options.autosave.unique_id;
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// Update this options
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this.options = options;
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// Auto render
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this.render();
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// The codemirror component is only available after rendering
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// so, the setter for the initialValue can only run after
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// the element has been rendered
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if(options.initialValue && (!this.options.autosave || this.options.autosave.foundSavedValue !== true)) {
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this.value(options.initialValue);
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}
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}
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/**
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* Default markdown render.
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*/
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markdown(text) {
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if(marked) {
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// Update options
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const update = this.options && this.options.renderingConfig && this.options.renderingConfig.singleLineBreaks === false
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const highlight = this.options && this.options.renderingConfig && this.options.renderingConfig.codeSyntaxHighlighting === true && window.hljs
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// Set options
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marked.setOptions({
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breaks: !update,
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highlight: highlight ? code => window.hljs.highlightAuto(code).value : undefined
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});
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return marked(text);
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}
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};
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/**
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* Render editor to the given element.
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*/
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render(el = this.element || document.getElementsByTagName("textarea")[0]) {
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// Already rendered.
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if(this._rendered && this._rendered === el) return;
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this.element = el;
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const options = this.options;
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const self = this;
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let keyMaps = {};
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for(const key in options.shortcuts) {
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// null stands for "do not bind this command"
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const isExistent = bindings.find(bindingName => bindingName === key)
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if(options.shortcuts[key] !== null && isExistent) {
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keyMaps[utils.fixShortcut(options.shortcuts[key])] = () => super[key](this);
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}
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}
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keyMaps["Enter"] = "newlineAndIndentContinueMarkdownList";
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keyMaps["Tab"] = "tabAndIndentMarkdownList";
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keyMaps["Shift-Tab"] = "shiftTabAndUnindentMarkdownList";
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keyMaps["Esc"] = cm => cm.getOption("fullScreen") && super.toggleFullScreen(self);
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document.addEventListener("keydown", (e = window.event) => {
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if(e.keyCode == 27) {
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if(self.codemirror.getOption("fullScreen")) super.toggleFullScreen(self);
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}
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}, false);
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let mode, backdrop;
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if(options.spellChecker !== false) {
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mode = "spell-checker";
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backdrop = options.parsingConfig;
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backdrop.name = "gfm";
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backdrop.gitHubSpice = false;
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CodeMirrorSpellChecker({
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codeMirrorInstance: CodeMirror
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});
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} else {
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mode = options.parsingConfig;
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mode.name = "gfm";
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mode.gitHubSpice = false;
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}
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this.codemirror = CodeMirror.fromTextArea(el, {
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mode: mode,
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backdrop: backdrop,
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theme: "paper",
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tabSize: (options.tabSize != undefined) ? options.tabSize : 2,
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indentUnit: (options.tabSize != undefined) ? options.tabSize : 2,
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indentWithTabs: !(options.indentWithTabs === false),
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lineNumbers: false,
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autofocus: options.autofocus === true,
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extraKeys: keyMaps,
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lineWrapping: !(options.lineWrapping === false),
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allowDropFileTypes: ["text/plain"],
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placeholder: options.placeholder || el.getAttribute("placeholder") || "",
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styleSelectedText: (options.styleSelectedText != undefined) ? options.styleSelectedText : true
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});
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if(options.forceSync === true) {
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this.codemirror.on("change", () => this.codemirror.save());
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}
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this.gui = {};
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if(options.toolbar !== false) {
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this.gui.toolbar = this.createToolbar();
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}
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if(options.status !== false) {
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this.gui.statusbar = this.createStatusbar();
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}
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if(options.autosave != undefined && options.autosave.enabled === true) {
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this.autosave();
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}
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this.gui.sideBySide = this.createSideBySide();
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this._rendered = this.element;
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// Fixes CodeMirror bug (#344)
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setTimeout(() => {
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this.codemirror.refresh();
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}, 0);
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};
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autosave() {
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if(!utils.isLocalStorageAvailable()) {
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return console.log("SimpleMDE: localStorage not available, cannot autosave")
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}
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const simplemde = this;
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if(this.options.autosave.uniqueId == undefined || this.options.autosave.uniqueId == "") {
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return console.log("SimpleMDE: You must set a uniqueId to use the autosave feature");
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}
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if(simplemde.element.form != null && simplemde.element.form != undefined) {
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simplemde.element.form.addEventListener("submit", () => {
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localStorage.removeItem("smde_" + simplemde.options.autosave.uniqueId);
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});
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}
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if(this.options.autosave.loaded !== true) {
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if(typeof localStorage.getItem("smde_" + this.options.autosave.uniqueId) == "string" && localStorage.getItem("smde_" + this.options.autosave.uniqueId) != "") {
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this.codemirror.setValue(localStorage.getItem("smde_" + this.options.autosave.uniqueId));
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this.options.autosave.foundSavedValue = true;
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}
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this.options.autosave.loaded = true;
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}
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localStorage.setItem("smde_" + this.options.autosave.uniqueId, simplemde.value());
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let el = document.getElementById("autosaved");
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if(el != null && el != undefined && el != "") {
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const d = new Date();
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const hh = d.getHours();
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const mm = d.getMinutes();
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// date format, output example: Autosaved: 5:45 pm
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const dd = hh >= 12 ? 'pm' : 'am'
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const h = hh == 0 ? 12 : hh > 12 ? hh - 12 : hh;
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const m = mm < 10 ? `0${mm}` : mm;
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el.innerHTML = `Autosaved: ${h}:${m} ${dd}`;
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}
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this.autosaveTimeoutId = setTimeout(() => {
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simplemde.autosave();
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}, this.options.autosave.delay || 10000);
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};
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clearAutosavedValue() {
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if(utils.isLocalStorageAvailable()) {
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if(this.options.autosave == undefined || this.options.autosave.uniqueId == undefined || this.options.autosave.uniqueId == "") {
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return console.log("SimpleMDE: You must set a uniqueId to clear the autosave value");
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}
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localStorage.removeItem("smde_" + this.options.autosave.uniqueId);
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} else {
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console.log("SimpleMDE: localStorage not available, cannot autosave");
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}
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};
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createSideBySide() {
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let cm = this.codemirror;
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let wrapper = cm.getWrapperElement();
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let preview = wrapper.nextSibling;
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const notCreate = !preview || !/editor-preview-side/.test(preview.className)
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if(notCreate) {
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preview = document.createElement("div");
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preview.className = "editor-preview-side";
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wrapper.parentNode.insertBefore(preview, wrapper.nextSibling);
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}
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// Syncs scroll editor -> preview
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let cScroll = false;
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let pScroll = false;
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cm.on("scroll", v => {
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if(cScroll) return cScroll = false;
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pScroll = true;
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const height = v.getScrollInfo().height - v.getScrollInfo().clientHeight;
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const ratio = parseFloat(v.getScrollInfo().top) / height;
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preview.scrollTop = (preview.scrollHeight - preview.clientHeight) * ratio;
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});
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// Syncs scroll preview -> editor
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preview.onscroll = () => {
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if(pScroll) return pScroll = false;
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cScroll = true;
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const height = preview.scrollHeight - preview.clientHeight;
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const ratio = parseFloat(preview.scrollTop) / height;
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const move = (cm.getScrollInfo().height - cm.getScrollInfo().clientHeight) * ratio;
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cm.scrollTo(0, move);
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};
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return preview;
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};
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createToolbar(items = this.options.toolbar) {
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if(!items || items.length === 0) return;
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const isExistent = value => toolbarBuiltInButtons[value] != undefined
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this.toolbar = items.map(v => isExistent(v) ? toolbarBuiltInButtons[v] : v)
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let bar = document.createElement("div");
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let toolbarData = {};
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const nextLoop = (v, i) => {
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const name = v.name
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if(name == "guide" && this.options.toolbarGuideIcon === false) return true;
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if(this.options.hideIcons && this.options.hideIcons.indexOf(name) != -1) return true;
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// Fullscreen does not work well on mobile devices (even tablets)
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// In the future, hopefully this can be resolved
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if((name == "fullscreen" || name == "side-by-side") && utils.isMobile()) return true;
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// Don't include trailing separators
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if(v === "|") {
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let nonSeparatorIconsFollow = true;
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for(let x = (i + 1); x < this.toolbar.length; x++) {
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if(this.toolbar[x] !== "|" && (!this.options.hideIcons || this.options.hideIcons.indexOf(name) == -1)) {
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nonSeparatorIconsFollow = false;
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}
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}
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if(nonSeparatorIconsFollow) return true
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}
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return false
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}
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const createElement = v => {
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if(v === "|") return createSep();
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return createIcon(v, this.options.toolbarTips, this.options.shortcuts)
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}
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this.toolbar.forEach((v, i) => {
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if(nextLoop(v, i)) return;
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|
// Create the icon and append to the toolbar
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|
const el = createElement(v)
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const isCustomMethods = typeof v.action === "function"
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|
// bind events, special for info
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if(v.action) {
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|
el.onclick = e => {
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|
e.preventDefault();
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|
isCustomMethods ? v.action(this) : super[v.action](this)
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};
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|
}
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|
toolbarData[v.name || v] = el;
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|
bar.appendChild(el);
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|
|
})
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|
|
this.toolbarElements = toolbarData;
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|
|
this.codemirror.on("cursorActivity", () => {
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|
|
const stat = base.getState(this.codemirror);
|
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|
|
for(const key in toolbarData) {
|
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|
|
let el = toolbarData[key];
|
|
|
|
if(stat[key]) {
|
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|
|
el.className += " active";
|
|
|
|
} else if(key != "fullscreen" && key != "side-by-side") {
|
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|
|
el.className = el.className.replace(/\s*active\s*/g, "");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
});
|
|
|
|
|
|
|
|
const cmWrapper = this.codemirror.getWrapperElement();
|
|
|
|
|
|
|
|
bar.className = "editor-toolbar";
|
|
|
|
cmWrapper.parentNode.insertBefore(bar, cmWrapper);
|
|
|
|
return bar;
|
|
|
|
};
|
|
|
|
|
|
|
|
createStatusbar(status = this.options.status) {
|
|
|
|
// Make sure the status variable is valid
|
|
|
|
if(!status || status.length === 0) return;
|
|
|
|
|
|
|
|
const options = this.options;
|
|
|
|
const cm = this.codemirror;
|
|
|
|
|
|
|
|
// Set up the built-in items
|
|
|
|
let items = [];
|
|
|
|
let bar = document.createElement("div");
|
|
|
|
bar.className = "editor-statusbar";
|
|
|
|
|
|
|
|
const statusFuncMap = {
|
|
|
|
words: {
|
|
|
|
defaultValue: el => el.innerHTML = utils.wordCount(cm.getValue()),
|
|
|
|
onUpdate: el => el.innerHTML = utils.wordCount(cm.getValue())
|
|
|
|
},
|
|
|
|
lines: {
|
|
|
|
defaultValue: el => el.innerHTML = cm.lineCount(),
|
|
|
|
onUpdate: el => el.innerHTML = cm.lineCount()
|
|
|
|
},
|
|
|
|
cursor: {
|
|
|
|
defaultValue: el => el.innerHTML = "0:0",
|
|
|
|
onUpdate: el => el.innerHTML = cm.getCursor().line + ":" + cm.getCursor().ch
|
|
|
|
},
|
|
|
|
autosave: {
|
|
|
|
defaultValue: el => {
|
|
|
|
if(options.autosave != undefined && options.autosave.enabled === true) {
|
|
|
|
el.setAttribute("id", "autosaved");
|
|
|
|
}
|
|
|
|
},
|
|
|
|
onUpdate: undefined
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
status.forEach(v => {
|
|
|
|
if(typeof v === "object") {
|
|
|
|
items.push({
|
|
|
|
className: v.className,
|
|
|
|
defaultValue: v.defaultValue,
|
|
|
|
onUpdate: v.onUpdate
|
|
|
|
})
|
|
|
|
}
|
|
|
|
if(statusFuncMap[v]) {
|
|
|
|
items.push({
|
|
|
|
className: v.toString(),
|
|
|
|
defaultValue: statusFuncMap[v].defaultValue,
|
|
|
|
onUpdate: statusFuncMap[v].onUpdate
|
|
|
|
})
|
|
|
|
}
|
|
|
|
})
|
|
|
|
|
|
|
|
|
|
|
|
// Create element for the status bar
|
|
|
|
const createStatusElement = className => {
|
|
|
|
let el = document.createElement("span");
|
|
|
|
el.className = className
|
|
|
|
return el
|
|
|
|
}
|
|
|
|
items.forEach(v => {
|
|
|
|
const el = createStatusElement(v.className)
|
|
|
|
if(typeof v.defaultValue === "function") v.defaultValue(el)
|
|
|
|
if(typeof v.onUpdate === "function") {
|
|
|
|
// Create a closure around the span of the current action, then execute the onUpdate handler
|
|
|
|
this.codemirror.on("update", () => v.onUpdate(el));
|
|
|
|
}
|
|
|
|
|
|
|
|
// Append the item to the status bar
|
|
|
|
bar.appendChild(el);
|
|
|
|
})
|
|
|
|
|
|
|
|
// Insert the status bar into the DOM
|
|
|
|
let cmWrapper = this.codemirror.getWrapperElement();
|
|
|
|
cmWrapper.parentNode.insertBefore(bar, cmWrapper.nextSibling);
|
|
|
|
return bar;
|
|
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Get or set the text content.
|
|
|
|
*/
|
|
|
|
value(val) {
|
|
|
|
if(val === undefined) return this.codemirror.getValue();
|
|
|
|
this.codemirror.getDoc().setValue(val);
|
|
|
|
return this;
|
|
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Bind instance methods for exports.
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
isPreviewActive() {
|
|
|
|
const cm = this.codemirror;
|
|
|
|
const wrapper = cm.getWrapperElement();
|
|
|
|
const preview = wrapper.lastChild;
|
|
|
|
|
|
|
|
return /editor-preview-active/.test(preview.className);
|
|
|
|
};
|
|
|
|
|
|
|
|
isSideBySideActive() {
|
|
|
|
const cm = this.codemirror;
|
|
|
|
const wrapper = cm.getWrapperElement();
|
|
|
|
const preview = wrapper.nextSibling;
|
|
|
|
|
|
|
|
return /editor-preview-active-side/.test(preview.className);
|
|
|
|
};
|
|
|
|
|
|
|
|
isFullscreenActive() {
|
|
|
|
const cm = this.codemirror;
|
|
|
|
|
|
|
|
return cm.getOption("fullScreen");
|
|
|
|
};
|
|
|
|
|
|
|
|
getState() {
|
|
|
|
const cm = this.codemirror;
|
|
|
|
|
|
|
|
return base.getState(cm);
|
|
|
|
};
|
|
|
|
|
|
|
|
toTextArea() {
|
|
|
|
const cm = this.codemirror;
|
|
|
|
const wrapper = cm.getWrapperElement();
|
|
|
|
|
|
|
|
if(wrapper.parentNode) {
|
|
|
|
if(this.gui.toolbar) {
|
|
|
|
wrapper.parentNode.removeChild(this.gui.toolbar);
|
|
|
|
}
|
|
|
|
if(this.gui.statusbar) {
|
|
|
|
wrapper.parentNode.removeChild(this.gui.statusbar);
|
|
|
|
}
|
|
|
|
if(this.gui.sideBySide) {
|
|
|
|
wrapper.parentNode.removeChild(this.gui.sideBySide);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
cm.toTextArea();
|
|
|
|
|
|
|
|
if(this.autosaveTimeoutId) {
|
|
|
|
clearTimeout(this.autosaveTimeoutId);
|
|
|
|
this.autosaveTimeoutId = undefined;
|
|
|
|
this.clearAutosavedValue();
|
|
|
|
}
|
|
|
|
};
|
|
|
|
}
|
|
|
|
export default SimpleMDE
|