each code line taged by pre

[fuyunliu]

i think we want just one pre tag

[fuyunliu]

better:
multi code line with just one pre tag
if you want another code block, just click again.

[algorys]

@fuyunliu due to a problem with PRE in Firefox who put one PRE block by line, I've make this little function for code button:

{
    name: 'code',
    icon: '<i class="fa fa-fw fa-code"></i>',
    result: function() {
        if (window.getSelection) {
            let linesCode = window.getSelection().toString().split('\n').join('<br>');
            document.execCommand('insertHTML', false, '<pre>' + linesCode + '</pre>');
        } else {
            document.execCommand('formatBlock', false, '<PRE>');
        }
    }
}