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358 lines
7.8 KiB
JavaScript
358 lines
7.8 KiB
JavaScript
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var isMac = /Mac/.test(navigator.platform);
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var shortcuts = {
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'Cmd-B': toggleBold,
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'Cmd-I': toggleItalic,
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'Cmd-K': drawLink,
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'Cmd-Alt-I': drawImage,
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"Cmd-'": toggleBlockquote,
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'Cmd-Alt-L': toggleOrderedList,
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'Cmd-L': toggleUnOrderedList
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};
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/**
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* Fix shortcut. Mac use Command, others use Ctrl.
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*/
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function fixShortcut(name) {
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if (isMac) {
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name = name.replace('Ctrl', 'Cmd');
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} else {
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name = name.replace('Cmd', 'Ctrl');
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}
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return name;
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}
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/**
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* Create icon element for toolbar.
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*/
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function createIcon(name, options) {
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options = options || {};
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var el = document.createElement('a');
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var shortcut = options.shortcut || shortcuts[name];
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if (shortcut) {
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shortcut = fixShortcut(shortcut);
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el.title = shortcut;
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el.title = el.title.replace('Cmd', '⌘');
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if (isMac) {
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el.title = el.title.replace('Alt', '⌥');
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}
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}
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el.className = options.className || 'icon-' + name;
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return el;
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}
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function createSep() {
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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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/**
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* The state of CodeMirror at the given position.
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*/
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function getState(cm, pos) {
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pos = pos || cm.getCursor('start');
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var stat = cm.getTokenAt(pos);
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if (!stat.type) return {};
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var types = stat.type.split(' ');
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var ret = {}, data, text;
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for (var i = 0; i < types.length; i++) {
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data = types[i];
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if (data === 'strong') {
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ret.bold = true;
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} else if (data === 'variable-2') {
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text = cm.getLine(pos.line);
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if (/^\s*\d+\.\s/.test(text)) {
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ret['ordered-list'] = true;
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} else {
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ret['unordered-list'] = true;
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}
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} else if (data === 'atom') {
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ret.quote = true;
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} else if (data === 'em') {
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ret.italic = true;
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} else if (data === 'quote') {
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ret.quote = true;
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}
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}
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return ret;
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}
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/**
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* Toggle full screen of the editor.
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*/
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function toggleFullScreen(editor) {
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var el = editor.codemirror.getWrapperElement();
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// https://developer.mozilla.org/en-US/docs/DOM/Using_fullscreen_mode
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var doc = document;
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var isFull = doc.fullScreen || doc.mozFullScreen || doc.webkitFullScreen;
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var request = function() {
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if (el.requestFullScreen) {
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el.requestFullScreen();
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} else if (el.mozRequestFullScreen) {
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el.mozRequestFullScreen();
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} else if (el.webkitRequestFullScreen) {
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el.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT);
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}
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};
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var cancel = function() {
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if (doc.cancelFullScreen) {
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doc.cancelFullScreen();
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} else if (doc.mozCancelFullScreen) {
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doc.mozCancelFullScreen();
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} else if (doc.webkitCancelFullScreen) {
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doc.webkitCancelFullScreen();
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}
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};
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if (!isFull) {
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request();
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} else if (cancel) {
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cancel();
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}
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}
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/**
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* Action for toggling bold.
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*/
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function toggleBold(editor) {
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_toggleBlock(editor, 'bold', '**');
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}
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/**
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* Action for toggling italic.
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*/
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function toggleItalic(editor) {
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_toggleBlock(editor, 'italic', '*');
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}
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/**
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* Action for toggling code block.
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*/
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function toggleCodeBlock(editor) {
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_toggleBlock(editor, 'code', '```\r\n', '\r\n```');
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}
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/**
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* Action for toggling blockquote.
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*/
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function toggleBlockquote(editor) {
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var cm = editor.codemirror;
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_toggleLine(cm, 'quote');
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}
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/**
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* Action for toggling ul.
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*/
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function toggleUnOrderedList(editor) {
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var cm = editor.codemirror;
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_toggleLine(cm, 'unordered-list');
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}
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/**
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* Action for toggling ol.
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*/
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function toggleOrderedList(editor) {
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var cm = editor.codemirror;
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_toggleLine(cm, 'ordered-list');
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}
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/**
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* Action for drawing a link.
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*/
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function drawLink(editor) {
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var cm = editor.codemirror;
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var stat = getState(cm);
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_replaceSelection(cm, stat.link, '[', '](http://)');
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}
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/**
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* Action for drawing an img.
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*/
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function drawImage(editor) {
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var cm = editor.codemirror;
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var stat = getState(cm);
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_replaceSelection(cm, stat.image, '![Short description of image](http://', ')');
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}
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/**
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* Undo action.
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*/
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function undo(editor) {
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var cm = editor.codemirror;
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cm.undo();
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cm.focus();
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}
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/**
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* Redo action.
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*/
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function redo(editor) {
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var cm = editor.codemirror;
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cm.redo();
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cm.focus();
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}
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/**
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* Preview action.
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*/
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function togglePreview(editor) {
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var toolbar = editor.toolbar.preview;
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var parse = editor.constructor.markdown;
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var cm = editor.codemirror;
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var wrapper = cm.getWrapperElement();
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var preview = wrapper.lastChild;
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if (!/editor-preview/.test(preview.className)) {
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preview = document.createElement('div');
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preview.className = 'editor-preview';
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wrapper.appendChild(preview);
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}
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if (/editor-preview-active/.test(preview.className)) {
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preview.className = preview.className.replace(
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/\s*editor-preview-active\s*/g, ''
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);
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toolbar.className = toolbar.className.replace(/\s*active\s*/g, '');
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} else {
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/* When the preview button is clicked for the first time,
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* give some time for the transition from editor.css to fire and the view to slide from right to left,
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* instead of just appearing.
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*/
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setTimeout(function() {preview.className += ' editor-preview-active'}, 1);
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toolbar.className += ' active';
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}
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var text = cm.getValue();
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preview.innerHTML = parse(text);
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}
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function _replaceSelection(cm, active, start, end) {
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var text;
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var startPoint = cm.getCursor('start');
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var endPoint = cm.getCursor('end');
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if (active) {
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text = cm.getLine(startPoint.line);
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start = text.slice(0, startPoint.ch);
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end = text.slice(startPoint.ch);
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cm.replaceRange(start + end, {line: startPoint.line, ch: 0});
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} else {
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text = cm.getSelection();
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cm.replaceSelection(start + text + end);
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startPoint.ch += start.length;
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endPoint.ch += start.length;
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}
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cm.setSelection(startPoint, endPoint);
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cm.focus();
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}
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function _toggleLine(cm, name) {
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var stat = getState(cm);
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var startPoint = cm.getCursor('start');
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var endPoint = cm.getCursor('end');
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var repl = {
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'quote': /^(\s*)\>\s+/,
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'unordered-list': /^(\s*)(\*|\-|\+)\s+/,
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'ordered-list': /^(\s*)\d+\.\s+/
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};
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var map = {
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'quote': '> ',
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'unordered-list': '* ',
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'ordered-list': '1. '
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};
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for (var i = startPoint.line; i <= endPoint.line; i++) {
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(function(i) {
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var text = cm.getLine(i);
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if (stat[name]) {
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text = text.replace(repl[name], '$1');
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} else {
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text = map[name] + text;
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}
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cm.replaceRange(text, {line: i, ch: 0}, {line: i, ch: 99999999999999});
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})(i);
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}
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cm.focus();
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}
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function _toggleBlock(editor, type, start_chars, end_chars){
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end_chars = (typeof end_chars === 'undefined') ? start_chars : end_chars;
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var cm = editor.codemirror;
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var stat = getState(cm);
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var text;
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var start = start_chars;
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var end = end_chars;
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var startPoint = cm.getCursor('start');
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var endPoint = cm.getCursor('end');
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if (stat[type]) {
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text = cm.getLine(startPoint.line);
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start = text.slice(0, startPoint.ch);
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end = text.slice(startPoint.ch);
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if(type == "bold"){
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start = start.replace(/(\*\*|__)(?![\s\S]*(\*\*|__))/, "");
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end = end.replace(/(\*\*|__)/, "");
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}
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else if(type == "italic"){
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start = start.replace(/(\*|_)(?![\s\S]*(\*|_))/, "");
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end = end.replace(/(\*|_)/, "");
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}
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cm.replaceRange(start + end, {line: startPoint.line, ch: 0}, {line: startPoint.line, ch: 99999999999999});
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startPoint.ch -= 2;
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endPoint.ch -= 2;
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} else {
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text = cm.getSelection();
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if(type == "bold"){
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text = text.split("**").join("");
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text = text.split("__").join("");
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}
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else if(type == "italic"){
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text = text.split("*").join("");
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text = text.split("_").join("");
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}
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cm.replaceSelection(start + text + end);
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startPoint.ch += start_chars.length;
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endPoint.ch = startPoint.ch + text.length;
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}
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cm.setSelection(startPoint, endPoint);
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cm.focus();
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}
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/* The right word count in respect for CJK. */
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function wordCount(data) {
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var pattern = /[a-zA-Z0-9_\u0392-\u03c9]+|[\u4E00-\u9FFF\u3400-\u4dbf\uf900-\ufaff\u3040-\u309f\uac00-\ud7af]+/g;
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var m = data.match(pattern);
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var count = 0;
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if( m === null ) return count;
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for (var i = 0; i < m.length; i++) {
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if (m[i].charCodeAt(0) >= 0x4E00) {
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count += m[i].length;
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} else {
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count += 1;
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}
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}
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return count;
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} |