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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))
},
}))
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