Jupyter notebook to test arbitrary numbers of headings

many_headings.ipynb

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       "<IPython.core.display.Javascript object>"
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   "source": [
    "%%javascript\n",
    "\n",
    "var lipsum = (\n",
    "'Lorem ipsum dolor sit amet consectetur adipiscing elit sed do eiusmod tempor '+\n",
    "'incididunt ut labore et dolore magna aliqua Ut enim ad minim veniam quis'+\n",
    "'nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat '+\n",
    "'Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore '+\n",
    "'eu fugiat nulla pariatur Excepteur sint occaecat cupidatat non proident sunt '+\n",
    "'in culpa qui officia deserunt mollit anim id est laborum'\n",
    ").split(' ');\n",
    "\n",
    "function lipsentence (maxwords) {\n",
    "    maxwords = Math.ceil((maxwords || 20) * Math.random());\n",
    "    var sentence = [];\n",
    "    while (sentence.length < maxwords) {\n",
    "        sentence.push(lipsum[Math.floor(Math.random() * (lipsum.length - 1))]);\n",
    "    }\n",
    "    sentence = sentence.join(' ');\n",
    "    return sentence.substring(0, 1).toUpperCase() + sentence.substring(1) + '.';\n",
    "}\n",
    "\n",
    "function liptitle (level) {\n",
    "    var title = '# ' + lipsentence(10);\n",
    "    for (var ii = level; ii > 0; ii--) { title = '#' + title; }\n",
    "    return title;\n",
    "}\n",
    "\n",
    "// delete existing cells\n",
    "function delete_all_cells (starting_ind) {\n",
    "    starting_ind = starting_ind || 1;\n",
    "    var inds = [];\n",
    "    for (var ii = Jupyter.notebook.ncells() - 1; ii > starting_ind - 1; ii--) {\n",
    "        inds.push(ii);\n",
    "    }\n",
    "    Jupyter.notebook.delete_cells(inds);\n",
    "}\n",
    "\n",
    "// add new headings\n",
    "function add_new_sections (num_sections) {\n",
    "    num_sections = num_sections || 1\n",
    "    for (var ii=0; ii < num_sections; ii++) {\n",
    "        var hcell = Jupyter.notebook.insert_cell_at_bottom('markdown');\n",
    "        var hlevel = Math.floor(Math.random() * 6);\n",
    "        var htext = liptitle(hlevel);\n",
    "        hcell.set_text(htext);\n",
    "        hcell.render();\n",
    "        for (var jj=0; jj < Math.floor(Math.random() * hlevel); jj++) {\n",
    "            Jupyter.notebook.insert_cell_at_bottom('code').set_text(lipsentence());\n",
    "        }\n",
    "    }\n",
    "}\n",
    "\n",
    "// stops this happening on notebook load\n",
    "if (window._jcb91_add_sections === undefined) {\n",
    "    $(element).append($('<p>').text('not adding cells - you need to set window._jcb91_add_sections'));\n",
    "}\n",
    "else {\n",
    "    var cells = Jupyter.notebook.get_cells();\n",
    "    var nheadings = 0;\n",
    "    for (var ii = 1; ii < cells.length; ii++) {\n",
    "        if (cells[ii].type === 'markdown' && cells[ii].get_text().substring(0, 1) == '#') {\n",
    "            nheadings++;\n",
    "        }\n",
    "    }\n",
    "    var to_add = window._jcb91_add_sections - nheadings;\n",
    "    if (to_add < 1) {\n",
    "        $(element).append($('<p>').text('not adding cells - there are already ' + nheadings + '.'));\n",
    "    }\n",
    "    else {\n",
    "        add_new_sections(to_add);\n",
    "    }\n",
    "}"
   ]
  }
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