You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
78 lines
1.8 KiB
78 lines
1.8 KiB
/*! Licensed under MIT, https://github.com/sofish/pen */
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(function(root) {
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// only works with Pen
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if(!root.Pen) return;
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// markdown covertor obj
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var covertor = {
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keymap: { '96': '`', '62': '>', '49': '1', '46': '.', '45': '-', '42': '*', '35': '#'},
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stack : []
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};
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// return valid markdown syntax
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covertor.valid = function(str) {
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var len = str.length;
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if(str.match(/[#]{1,6}/)) {
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return ['h' + len, len];
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} else if(str === '```') {
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return ['pre', len];
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} else if(str === '>') {
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return ['blockquote', len];
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} else if(str === '1.') {
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return ['insertorderedlist', len];
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} else if(str === '-' || str === '*') {
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return ['insertunorderedlist', len];
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} else if(str.match(/(?:\.|\*|\-){3,}/)) {
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return ['inserthorizontalrule', len];
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}
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};
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// parse command
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covertor.parse = function(e) {
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var code = e.keyCode || e.which;
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// when `space` is pressed
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if (code === 32) {
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var markdownSyntax = this.stack.join('');
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// reset stack
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this.stack = [];
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var cmd = this.valid(markdownSyntax);
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if (cmd) {
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// prevents leading space after executing command
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e.preventDefault();
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return cmd;
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}
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}
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// make cmd
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if(this.keymap[code]) this.stack.push(this.keymap[code]);
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return false;
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};
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// exec command
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covertor.action = function(pen, cmd) {
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// only apply effect at line start
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if(pen.selection.focusOffset > cmd[1]) return;
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var node = pen.selection.focusNode;
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node.textContent = node.textContent.slice(cmd[1]);
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pen.execCommand(cmd[0]);
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};
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// init covertor
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covertor.init = function(pen) {
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pen.on('keypress', function(e) {
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var cmd = covertor.parse(e);
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if(cmd) return covertor.action(pen, cmd);
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});
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};
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// append to Pen
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root.Pen.prototype.markdown = covertor;
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}(window));
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