store kernelspec icons in the repository

create_JupyterLab_kernel.sh

@@ -56,7 +56,7 @@ cat <<EOF > $KERNEL_PATH/$KERNEL_NAME/kernel.json
 EOF
 
 # ... and add EBRAINS logo to kernel
-cp $LAB_KERNEL_ROOT/../etc/logo-64x64-python.png $KERNEL_PATH/$KERNEL_NAME/logo-64x64.png
+cp $(dirname ${BASH_SOURCE[0]})/etc/logo-64x64-python.png $KERNEL_PATH/$KERNEL_NAME/logo-64x64.png
 
 # (5) create startup script for R kernel
 cat $KERNEL_PATH/bin/env.sh > $KERNEL_PATH/bin/env_r.sh
@@ -75,5 +75,5 @@ cat <<EOF > $KERNEL_PATH/${KERNEL_NAME}-R/kernel.json
 EOF
 
 # ... and add EBRAINS logo and kernel.js to kernel
-cp $LAB_KERNEL_ROOT/../etc/logo-64x64-R.png $KERNEL_PATH/${KERNEL_NAME}-R/logo-64x64.png
-cp $LAB_KERNEL_ROOT/../etc/kernel.js $KERNEL_PATH/${KERNEL_NAME}-R/
+cp $(dirname ${BASH_SOURCE[0]})/etc/logo-64x64-R.png $KERNEL_PATH/${KERNEL_NAME}-R/logo-64x64.png
+cp $(dirname ${BASH_SOURCE[0]})/etc/kernel.js $KERNEL_PATH/${KERNEL_NAME}-R/

etc/kernel.js

+const cmd_key = /Mac/.test(navigator.platform) ? 'Cmd' : 'Ctrl'const edit_actions = [
+        {
+                name: 'R Assign',
+                shortcut: 'Alt--',
+                icon: 'fa-long-arrow-left',
+                help: 'R: Inserts the left-assign operator (<-)',
+                handler(cm) {
+                        cm.replaceSelection(' <- ')
+                },
+        },
+        {
+                name: 'R Pipe',
+                shortcut: `Shift-${cmd_key}-M`,
+                icon: 'fa-angle-right',
+                help: 'R: Inserts the magrittr pipe operator (%>%)',
+                handler(cm) {
+                        cm.replaceSelection(' %>% ')
+                },
+        },
+        {
+                name: 'R Help',
+                shortcut: 'F1',
+                icon: 'fa-book',
+                help: 'R: Shows the manpage for the item under the cursor',
+                handler(cm, cell) {
+                        const {anchor, head} = cm.findWordAt(cm.getCursor())
+                        const word = cm.getRange(anchor, head)
+
+                        const callbacks = cell.get_callbacks()
+                        const options = {silent: false, store_history: false, stop_on_error: true}
+                        cell.last_msg_id = cell.notebook.kernel.execute(`help(\`${word}\`)`, callbacks, options)
+                },
+        },
+]
+
+const prefix = 'irkernel'
+
+function add_edit_shortcut(notebook, actions, keyboard_manager, edit_action) {
+        const {name, shortcut, icon, help, handler} = edit_action
+
+        const action = {
+                icon, help,
+                help_index : 'zz',
+                handler: () => {
+                        const cell = notebook.get_selected_cell()
+                        handler(cell.code_mirror, cell)
+                },
+        }
+
+        const full_name = actions.register(action, name, prefix)
+
+        Jupyter.keyboard_manager.edit_shortcuts.add_shortcut(shortcut, full_name)
+}
+
+function render_math(pager, html) {
+        if (!html) return
+        const $container = pager.pager_element.find('#pager-container')
+        $container.find('p[style="text-align: center;"]').map((i, e) =>
+                e.outerHTML = `\\[${e.querySelector('i').innerHTML}\\]`)
+        $container.find('i').map((i, e) =>
+                e.outerHTML = `\\(${e.innerHTML}\\)`)
+        MathJax.Hub.Queue(['Typeset', MathJax.Hub, $container[0]])
+}
+
+define(['base/js/namespace'], ({
+        notebook,
+        actions,
+        keyboard_manager,
+        pager,
+}) => ({
+        onload() {
+                edit_actions.forEach(a => add_edit_shortcut(notebook, actions, keyboard_manager, a))
+
+                pager.events.on('open_with_text.Pager', (event, {data: {'text/html': html}}) =>
+                        render_math(pager, html))
+        },
+}))