$([IPython.events]).on('app_initialized.NotebookApp', function(){
    // add here logic that shoudl be run once per **page load**
    // like adding specific UI, or changing the default value
    // of codecell highlight.
    
    // Set tooltips to be triggered after 800ms
    IPython.tooltip.time_before_tooltip = 800;

    // IPython keycodes.
    var space = 32;
    var downArrow = 40;
    IPython.keyboard.keycodes.down = downArrow; // space

    IPython.CodeCell.options_default['cm_config']['mode'] = 'haskell';
    
    CodeMirror.requireMode('haskell', function(){
        // Create a multiplexing mode that uses Haskell highlighting by default but
        // doesn't highlight command-line directives.
        CodeMirror.defineMode("ihaskell", function(config) {
            return CodeMirror.multiplexingMode(
                CodeMirror.getMode(config, "haskell"),
                {
                open: /:(?=!)/, // Matches : followed by !, but doesn't consume !
                close: /^(?!!)/, // Matches start of line not followed by !, doesn't consume character
                mode: CodeMirror.getMode(config, "text/plain"),
                delimStyle: "delimit"
                }
                );
        });

        cells = IPython.notebook.get_cells();
        for(var i in cells){
            c = cells[i];
            if (c.cell_type === 'code') {
                // Force the mode to be Haskell
                // This is necessary, otherwise sometimes highlighting just doesn't happen.
                // This may be an IPython bug.
                c.code_mirror.setOption('mode', 'ihaskell');

                c.auto_highlight()
            }
        }
    });

    // Prevent the pager from surrounding everything with a <pre>
    IPython.Pager.prototype.append_text = function (text) {
        this.pager_element.find(".container").append($('<div/>').html(IPython.utils.autoLinkUrls(text)));
    };
});

$([IPython.events]).on('shell_reply.Kernel', function() {
    // Add logic here that should be run once per reply.

    // Highlight things with a .highlight-code class
    // The id is the mode with with to highlight
    $('.highlight-code').each(function() {
        var $this = $(this),
            $code = $this.html(),
            $unescaped = $('<div/>').html($code).text();
       
        $this.empty();

        // Never highlight this block again.
        this.className = "";
    
        CodeMirror(this, {
                value: $unescaped,
                mode: this.id,
                lineNumbers: false,
                readOnly: true
            });
    });
});