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// Copyright (c) Jupyter-Contrib Team.
// Distributed under the terms of the Modified BSD License.
// This is an extension allows you to jump to the current running cell.
// You can also activate this functionality automatically,
// i.e., your view is always scolling to the current cell.
//
// Keyboard shortcuts: Alt-I and Alt-down (works with single cells also -- this is useful!)
// The extension is simple, create function and then register the action and shortkey separately,
// so that user can update the shortkey according to their need.
define([
'base/js/namespace',
'jquery',
'require',
'base/js/events'
], function (Jupyter, $, requirejs, events) {
"use strict";
var action_follow_cell_on; // set on registration
var action_follow_cell_off; // set on registration
var action_go_to_runing_cell; // set on registration
var params = {
is_follow_cell: false,
go_to_running_cell_shortcut: 'Alt-I',
follow_cell_on_shortcut: "Alt-;",
follow_cell_off_shortcut: "Alt-'",
button_icon: 'fa-anchor'
};
function scrollIntoRunningCell(event, data) {
$('.running')[0].scrollIntoView({ behavior: 'smooth', inline: 'center' });
}
// update params with any specified in the server's config file
var update_params = function () {
var config = Jupyter.notebook.config;
for (var key in params) {
if (config.data.hasOwnProperty(key))
params[key] = config.data[key];
}
};
// Go to Running cell shortcut
function go_to_running_cell(event) {
// Find running cell and click the first one
if ($('.running').length > 0) {
$('.running')[0].scrollIntoView();
}
return false;
}
function follow_running_cell_on(event) {
Jupyter.notebook.events.on('finished_execute.CodeCell', scrollIntoRunningCell);
return false;
}
function follow_running_cell_off(event) {
Jupyter.notebook.events.off('finished_execute.CodeCell', scrollIntoRunningCell);
return false;
}
// Register actions to collapse and uncollapse the selected heading cell
function register_new_actions() {
action_go_to_runing_cell = Jupyter.keyboard_manager.actions.register({
handler: go_to_running_cell,
help: "Go to first executing cell",
help_index: 'aa',
icon: params.button_icon
}, 'Go to first running cell', 'Go To Running Cell'
)
action_follow_cell_on = Jupyter.keyboard_manager.actions.register({
handler: follow_running_cell_on,
help: "Follow running cell on",
help_index: 'aa'
}, 'Follow running cell on', 'Go To Running Cell'
)
action_follow_cell_off = Jupyter.keyboard_manager.actions.register({
handler: follow_running_cell_off,
help: "Follow running cell off",
help_index: 'aa'
}, 'Follow running cell off', 'Go To Running Cell'
);
if (params.is_follow_cell) {
Jupyter.notebook.events.on('finished_execute.CodeCell', scrollIntoRunningCell);
}
}
// Register keyboard shortcuts according to parameters
function register_keyboard_shortcuts() {
var shortcut, edit_shortcuts = Jupyter.keyboard_manager.command_shortcuts;
shortcut = params.go_to_running_cell_shortcut;
if (shortcut) {
edit_shortcuts.add_shortcut(shortcut, action_go_to_runing_cell);
}
shortcut = params.follow_cell_on_shortcut;
if (shortcut) {
edit_shortcuts.add_shortcut(shortcut, action_follow_cell_on);
}
shortcut = params.follow_cell_off_shortcut;
if (shortcut) {
edit_shortcuts.add_shortcut(shortcut, action_follow_cell_off);
}
}
function load_ipython_extension() {
update_params();
register_new_actions();
register_keyboard_shortcuts();
Jupyter.toolbar.add_buttons_group([action_go_to_runing_cell])
}
return {
load_ipython_extension: load_ipython_extension,
};
});
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