[collapsible_headings] new features!

conda.recipe/meta.yaml

@@ -42,10 +42,10 @@ test:
     - jupyter_contrib_nbextensions.install
     - jupyter_contrib_nbextensions.migrate
     - jupyter_contrib_nbextensions.nbconvert_support
+    - jupyter_contrib_nbextensions.nbconvert_support.collapsible_headings
     - jupyter_contrib_nbextensions.nbconvert_support.embedhtml
     - jupyter_contrib_nbextensions.nbconvert_support.pp_highlighter
     - jupyter_contrib_nbextensions.nbconvert_support.pre_codefolding
-    - jupyter_contrib_nbextensions.nbconvert_support.pre_collapsible_headings
     - jupyter_contrib_nbextensions.nbconvert_support.pre_pymarkdown
     - jupyter_contrib_nbextensions.nbconvert_support.pre_svg2pdf
     - jupyter_contrib_nbextensions.nbconvert_support.toc2

docs/source/exporting.rst

@@ -27,12 +27,6 @@ Retaining Codefolding
 .. autoclass:: CodeFoldingPreprocessor
 
 
-Collapsible Headings
-^^^^^^^^^^^^^^^^^^^^
-
-.. autoclass:: CollapsibleHeadingsPreprocessor
-
-
 Retaining Highlighting
 ^^^^^^^^^^^^^^^^^^^^^^
 
@@ -90,6 +84,20 @@ Export Table of Contents
 .. autoclass:: TocExporter
 
 
+Inlining css & javascript
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. autoclass:: ExporterInliner
+
+    Forms the basis for :class:`ExporterCollapsibleHeadings`.
+
+
+Collapsible Headings
+^^^^^^^^^^^^^^^^^^^^
+
+.. autoclass:: ExporterCollapsibleHeadings
+
+
 Templates
 ---------
 
@@ -122,16 +130,6 @@ The supported cell metadata tags are:
 
 Detailed description:
 
-This will hide any cell marked as `hidden` (used for collapsible headings extension):
-.. code-block::
-
-    {% block any_cell scoped %}
-    {%- if cell.metadata.hidden -%}
-    {%- else -%}
-    {{ super() }}
-    {%- endif -%}
-    {% endblock any_cell %}
-
 This will hide the input of either an individual code cell or all code cells of the notebook:
 .. code-block::
 
@@ -166,7 +164,7 @@ This will suppress the prompt string if the input of a code cell is hidden:
 nbextensions.tplx
 ^^^^^^^^^^^^^^^^^
 
-This template implements the features to hide cells used by extensions like collapsible_headings, hide_input, etc.
+This template implements the features to hide cells used by extensions like hide_input, etc.
 It won't produce a valid LaTeX file alone, use it to extend your own template (see printviewlatex.tplx).
 
 printviewlatex.tplx

setup.py

@@ -99,6 +99,7 @@ def main():
                 'html_toc = jupyter_contrib_nbextensions.nbconvert_support.toc2:TocExporter',  # noqa: E501
                 'selectLanguage = jupyter_contrib_nbextensions.nbconvert_support.nbTranslate:NotebookLangExporter',  # noqa: E501
                 'html_embed = jupyter_contrib_nbextensions.nbconvert_support.embedhtml:EmbedHTMLExporter',  # noqa: E501
+                'html_ch = jupyter_contrib_nbextensions.nbconvert_support.collapsible_headings:ExporterCollapsibleHeadings',  # noqa: E501
             ],
         },
         scripts=[os.path.join('scripts', p) for p in [

src/jupyter_contrib_nbextensions/nbconvert_support/__init__.py

@@ -2,26 +2,28 @@
 
 import os
 
+from .collapsible_headings import ExporterCollapsibleHeadings
 from .embedhtml import EmbedHTMLExporter
+from .exporter_inliner import ExporterInliner
+from .nbTranslate import NotebookLangExporter
 from .pp_highlighter import HighlighterPostProcessor, HighlighterPreprocessor
 from .pre_codefolding import CodeFoldingPreprocessor
-from .pre_collapsible_headings import CollapsibleHeadingsPreprocessor
 from .pre_pymarkdown import PyMarkdownPreprocessor
 from .pre_svg2pdf import SVG2PDFPreprocessor
 from .toc2 import TocExporter
-from .nbTranslate import NotebookLangExporter 
 
 __all__ = [
+    'templates_directory',
     'CodeFoldingPreprocessor',
-    'CollapsibleHeadingsPreprocessor',
     'EmbedHTMLExporter',
+    'ExporterCollapsibleHeadings',
+    'ExporterInliner',
     'HighlighterPostProcessor',
     'HighlighterPreprocessor',
+    'NotebookLangExporter',
     'PyMarkdownPreprocessor',
     'SVG2PDFPreprocessor',
-    'templates_directory',
     'TocExporter',
-    'NotebookLangExporter'
 ]
 
 

src/jupyter_contrib_nbextensions/nbconvert_support/collapsible_headings.py

@@ -0,0 +1,75 @@
+"""Nbconvert exporter to inline css & js for collapsible_headings."""
+
+import json
+import os
+
+from notebook.services.config import ConfigManager
+
+from jupyter_contrib_nbextensions import __file__ as contrib_init
+from .exporter_inliner import ExporterInliner
+
+
+class ExporterCollapsibleHeadings(ExporterInliner):
+    """
+    HTMLExporter which inlines the collapsible_headings nbextension.
+
+    Export collapsible_headings nbextension functionality to html
+    by inlining relevant css and js content.
+
+    Example usage::
+
+        jupyter nbconvert --to html_ch FILE.ipynb
+    """
+
+    def _template_file_default(self):
+        return 'collapsible_headings'
+
+    def __init__(self, *args, **kwargs):
+        super(ExporterCollapsibleHeadings, self).__init__(*args, **kwargs)
+
+        ch_dir = os.path.join(
+            os.path.dirname(contrib_init), 'nbextensions',
+            'collapsible_headings')
+
+        with open(os.path.join(ch_dir, 'main.css'), 'r') as f:
+            main_css = f.read()
+        self.inliner_resources['css'].append(main_css)
+
+        self.inliner_resources['css'].append("""
+/* no local copies of fontawesome fonts from basic templates, so get them from cdn */
+@font-face {
+    font-family: 'FontAwesome';
+    src: url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.2.0/fonts/fontawesome-webfont.eot');
+    src: url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.2.0/fonts/fontawesome-webfont.eot?#iefix') format('embedded-opentype'),
+         url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.2.0/fonts/fontawesome-webfont.woff') format('woff'),
+         url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.2.0/fonts/fontawesome-webfont.ttf') format('truetype'),
+         url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.2.0/fonts/fontawesome-webfont.svg#fontawesomeregular') format('svg');
+    font-weight: normal;
+    font-style: normal;
+}
+""")  # noqa: E501
+
+        with open(os.path.join(ch_dir, 'main.js'), 'r') as f:
+            self.inliner_resources['js'].append(
+                f.read().replace(
+                    "define([",
+                    "define('nbextensions/collapsible_headings/main', [")
+            )
+
+        cm = ConfigManager()
+        collapsible_headings_options = cm.get('notebook').get(
+            'collapsible_headings', {})
+        self.inliner_resources['js'].append("""
+require([
+    'jquery',
+    'nbextensions/collapsible_headings/main'
+], function (
+    $,
+    nbext
+) {
+    nbext.set_collapsible_headings_options(%s);
+    $(document).ready(function () {
+        nbext.refresh_all_headings();
+    });
+});
+""" % json.dumps(collapsible_headings_options))

src/jupyter_contrib_nbextensions/nbconvert_support/exporter_inliner.py

@@ -0,0 +1,46 @@
+"""Nbconvert exporter to inline css & js for collapsible_headings."""
+
+from __future__ import print_function
+
+from nbconvert.exporters.html import HTMLExporter
+from traitlets import Dict
+
+
+class ExporterInliner(HTMLExporter):
+
+    inliner_resources = Dict(
+        {'css': [], 'js': []}, config=True,
+        help='css and js scripts to wrap in html <style> or <script> tags')
+
+    def _template_file_default(self):
+        return 'inliner'
+
+    def from_notebook_node(self, nb, resources=None, **kw):
+
+        # ensure resources used by template actually exist, add in any from
+        # config
+        if resources is None:
+            resources = {}
+        inliner_resources = resources.setdefault('inliner', {})
+        for tt in ('css', 'js'):
+            existing_items = inliner_resources.setdefault(tt, [])
+            existing_items += [
+                item for item in self.inliner_resources[tt]
+                if item not in existing_items]
+
+        return super(ExporterInliner, self).from_notebook_node(
+            nb, resources, **kw)
+
+    @property
+    def default_config(self):
+        c = super(ExporterInliner, self).default_config
+        #  import here to avoid circular import
+        from jupyter_contrib_nbextensions.nbconvert_support import (
+            templates_directory)
+        contrib_templates_dir = templates_directory()
+
+        template_path = c.TemplateExporter.setdefault('template_path', [])
+        if templates_directory not in template_path:
+            template_path.append(contrib_templates_dir)
+
+        return c