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// Copyright (c) Jupyter-Contrib Team.
// Distributed under the terms of the Modified BSD License.
// This is a quick (and dirty) extension - move up or down several selected cells
// Dirty because it would be better to act on dom elements and write a correct
// move_cells() function.
// Updated to Jupyter 4.2+, taking advantage of
// `Jupyter.notebook.move_selection_{down, up}` new functions
//
// Keyboard shortcuts: Alt-up and Alt-down (works with single cells also -- this is useful!)
// Cells can be selected using the rubberband (needs rubberband extension) or via Shift-up/Shift-down or Shift-K/Shift-J
define([
'base/js/namespace',
'jquery',
'require',
'base/js/events'
], function(Jupyter, $, requirejs, events, rubberband) {
"use strict";
if (parseFloat(Jupyter.version.substr(0, 3)) >= 4.2) {
var add_cmd_shortcuts = {
'Alt-down': {
help: 'Move selected cells down',
help_index: 'ht',
handler: function() { Jupyter.notebook.move_selection_down() }
},
'Alt-up': {
help: 'Move selected cells up',
help_index: 'ht',
handler: function() { Jupyter.notebook.move_selection_up() }
}
}
} else { // Jupyter version < 4.2
var add_cmd_shortcuts = {
'Alt-down': {
help: 'Move selected cells down',
help_index: 'ht',
handler: function(event) {
var ncells = Jupyter.notebook.ncells();
var s = Jupyter.notebook.get_selected_indices();
//ensure cells indices are reverse sorted
var ss = s.sort(function(x, y) {
return x - y }).reverse();
if (ss[0] + 1 < ncells) {
for (var k in ss) {
Jupyter.notebook.move_cell_down(ss[k]);
}; //The second loop is needed because move_cell deselect
for (var k in ss) {
Jupyter.notebook.get_cell(ss[k] + 1).select();
}
}
}
},
'Alt-up': {
help: 'Move selected cells up',
help_index: 'ht',
handler: function(event) {
var s = Jupyter.notebook.get_selected_indices();
//ensure cells indices are sorted
var ss = s.sort(function(x, y) {
return x - y });
if (ss[0] - 1 >= 0) {
for (var k in ss) {
Jupyter.notebook.move_cell_up(ss[k]);
};
for (var k in ss) {
Jupyter.notebook.get_cell(ss[k] - 1).select();
}
}
}
}
}
}
function load_ipython_extension() {
Jupyter.keyboard_manager.command_shortcuts.add_shortcuts(add_cmd_shortcuts);
console.log("[move_selected_cells] loaded")
}
return {
load_ipython_extension: load_ipython_extension,
};
});
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