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//----------------------------------------------------------------------------
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// Copyright (C) 2011 The IPython Development Team
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//
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// Distributed under the terms of the BSD License. The full license is in
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// the file COPYING, distributed as part of this software.
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//----------------------------------------------------------------------------
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//============================================================================
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// Keyboard management
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//============================================================================
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var IPython = (function (IPython) {
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"use strict";
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// Setup global keycodes and inverse keycodes.
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// See http://unixpapa.com/js/key.html for a complete description. The short of
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// it is that there are different keycode sets. Firefox uses the "Mozilla keycodes"
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// and Webkit/IE use the "IE keycodes". These keycode sets are mostly the same
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// but have minor differences.
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// These apply to Firefox, (Webkit and IE)
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var _keycodes = {
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'a': 65, 'b': 66, 'c': 67, 'd': 68, 'e': 69, 'f': 70, 'g': 71, 'h': 72, 'i': 73,
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'j': 74, 'k': 75, 'l': 76, 'm': 77, 'n': 78, 'o': 79, 'p': 80, 'q': 81, 'r': 82,
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's': 83, 't': 84, 'u': 85, 'v': 86, 'w': 87, 'x': 88, 'y': 89, 'z': 90,
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'1 !': 49, '2 @': 50, '3 #': 51, '4 $': 52, '5 %': 53, '6 ^': 54,
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'7 &': 55, '8 *': 56, '9 (': 57, '0 )': 48,
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'[ {': 219, '] }': 221, '` ~': 192, ', <': 188, '. >': 190, '/ ?': 191,
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'\\ |': 220, '\' "': 222,
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'numpad0': 96, 'numpad1': 97, 'numpad2': 98, 'numpad3': 99, 'numpad4': 100,
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'numpad5': 101, 'numpad6': 102, 'numpad7': 103, 'numpad8': 104, 'numpad9': 105,
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'multiply': 106, 'add': 107, 'subtract': 109, 'decimal': 110, 'divide': 111,
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'f1': 112, 'f2': 113, 'f3': 114, 'f4': 115, 'f5': 116, 'f6': 117, 'f7': 118,
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'f8': 119, 'f9': 120, 'f11': 122, 'f12': 123, 'f13': 124, 'f14': 125, 'f15': 126,
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'backspace': 8, 'tab': 9, 'enter': 13, 'shift': 16, 'ctrl': 17, 'alt': 18,
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'meta': 91, 'capslock': 20, 'esc': 27, 'space': 32, 'pageup': 33, 'pagedown': 34,
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'end': 35, 'home': 36, 'left': 37, 'up': 38, 'right': 39, 'down': 40,
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'insert': 45, 'delete': 46, 'numlock': 144,
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};
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// These apply to Firefox and Opera
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var _mozilla_keycodes = {
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'; :': 59, '= +': 61, '- _': 173, 'meta': 224
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}
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// This apply to Webkit and IE
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var _ie_keycodes = {
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'; :': 186, '= +': 187, '- _': 189,
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}
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var browser = IPython.utils.browser[0];
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if (browser === 'Firefox' || browser === 'Opera') {
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$.extend(_keycodes, _mozilla_keycodes);
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} else if (browser === 'Safari' || browser === 'Chrome' || browser === 'MSIE') {
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$.extend(_keycodes, _ie_keycodes);
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}
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var keycodes = {};
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var inv_keycodes = {};
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for (var name in _keycodes) {
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var names = name.split(' ');
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if (names.length === 1) {
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var n = names[0]
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keycodes[n] = _keycodes[n]
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inv_keycodes[_keycodes[n]] = n
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} else {
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var primary = names[0];
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var secondary = names[1];
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keycodes[primary] = _keycodes[name]
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keycodes[secondary] = _keycodes[name]
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inv_keycodes[_keycodes[name]] = primary
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}
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}
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// Default keyboard shortcuts
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var default_common_shortcuts = {
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'meta+s' : {
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help : 'save notebook',
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help_index : 'fb',
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handler : function (event) {
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IPython.notebook.save_checkpoint();
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event.preventDefault();
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return false;
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}
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},
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'ctrl+s' : {
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help : 'save notebook',
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help_index : 'fc',
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handler : function (event) {
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IPython.notebook.save_checkpoint();
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event.preventDefault();
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return false;
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}
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},
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'shift' : {
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help : '',
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help_index : '',
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handler : function (event) {
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// ignore shift keydown
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return true;
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}
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},
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'shift+enter' : {
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help : 'run cell',
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help_index : 'ba',
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handler : function (event) {
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IPython.notebook.execute_cell();
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return false;
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}
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},
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'ctrl+enter' : {
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help : 'run cell, select below',
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help_index : 'bb',
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handler : function (event) {
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IPython.notebook.execute_cell_and_select_below();
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return false;
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}
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},
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'alt+enter' : {
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help : 'run cell, insert below',
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help_index : 'bc',
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handler : function (event) {
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IPython.notebook.execute_cell_and_insert_below();
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return false;
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}
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}
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}
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// Edit mode defaults
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var default_edit_shortcuts = {
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'esc' : {
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help : 'command mode',
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help_index : 'aa',
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handler : function (event) {
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IPython.notebook.command_mode();
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IPython.notebook.focus_cell();
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return false;
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}
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},
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'ctrl+m' : {
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help : 'command mode',
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help_index : 'ab',
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handler : function (event) {
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IPython.notebook.command_mode();
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IPython.notebook.focus_cell();
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return false;
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}
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},
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'up' : {
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help : '',
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help_index : '',
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handler : function (event) {
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var cell = IPython.notebook.get_selected_cell();
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if (cell && cell.at_top()) {
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event.preventDefault();
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IPython.notebook.command_mode()
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IPython.notebook.select_prev();
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IPython.notebook.edit_mode();
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return false;
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};
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}
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},
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'down' : {
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help : '',
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help_index : '',
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handler : function (event) {
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var cell = IPython.notebook.get_selected_cell();
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if (cell && cell.at_bottom()) {
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event.preventDefault();
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IPython.notebook.command_mode()
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IPython.notebook.select_next();
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IPython.notebook.edit_mode();
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return false;
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};
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}
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},
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'alt+-' : {
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help : 'split cell',
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help_index : 'ea',
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handler : function (event) {
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IPython.notebook.split_cell();
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return false;
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}
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},
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'alt+subtract' : {
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help : '',
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help_index : 'eb',
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handler : function (event) {
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IPython.notebook.split_cell();
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return false;
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}
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},
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}
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// Command mode defaults
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var default_command_shortcuts = {
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'enter' : {
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help : 'edit mode',
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help_index : 'aa',
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handler : function (event) {
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IPython.notebook.edit_mode();
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return false;
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}
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},
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'up' : {
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help : 'select previous cell',
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help_index : 'da',
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handler : function (event) {
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var index = IPython.notebook.get_selected_index();
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if (index !== 0 && index !== null) {
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IPython.notebook.select_prev();
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var cell = IPython.notebook.get_selected_cell();
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cell.focus_cell();
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};
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return false;
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}
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},
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'down' : {
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help : 'select next cell',
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help_index : 'db',
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handler : function (event) {
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var index = IPython.notebook.get_selected_index();
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if (index !== (IPython.notebook.ncells()-1) && index !== null) {
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IPython.notebook.select_next();
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var cell = IPython.notebook.get_selected_cell();
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cell.focus_cell();
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};
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return false;
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}
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},
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'k' : {
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help : 'select previous cell',
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help_index : 'dc',
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handler : function (event) {
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var index = IPython.notebook.get_selected_index();
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if (index !== 0 && index !== null) {
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IPython.notebook.select_prev();
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var cell = IPython.notebook.get_selected_cell();
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cell.focus_cell();
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};
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return false;
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}
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},
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'j' : {
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help : 'select next cell',
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help_index : 'dd',
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handler : function (event) {
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var index = IPython.notebook.get_selected_index();
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if (index !== (IPython.notebook.ncells()-1) && index !== null) {
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IPython.notebook.select_next();
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var cell = IPython.notebook.get_selected_cell();
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cell.focus_cell();
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};
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return false;
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}
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},
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'x' : {
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help : 'cut cell',
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help_index : 'ee',
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handler : function (event) {
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IPython.notebook.cut_cell();
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return false;
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}
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},
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'c' : {
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help : 'copy cell',
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help_index : 'ef',
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handler : function (event) {
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IPython.notebook.copy_cell();
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return false;
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}
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},
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'v' : {
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help : 'paste cell below',
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help_index : 'eg',
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handler : function (event) {
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IPython.notebook.paste_cell_below();
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return false;
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}
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},
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'd' : {
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help : 'delete cell (press twice)',
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help_index : 'ei',
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handler : function (event) {
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var dc = IPython.keyboard_manager._delete_count;
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if (dc === 0) {
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IPython.keyboard_manager._delete_count = 1;
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setTimeout(function () {
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IPython.keyboard_manager._delete_count = 0;
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}, 800);
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} else if (dc === 1) {
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IPython.notebook.delete_cell();
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IPython.keyboard_manager._delete_count = 0;
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}
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return false;
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}
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},
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'a' : {
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help : 'insert cell above',
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help_index : 'ec',
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handler : function (event) {
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IPython.notebook.insert_cell_above('code');
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IPython.notebook.select_prev();
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IPython.notebook.focus_cell();
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return false;
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}
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},
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'b' : {
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help : 'insert cell below',
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help_index : 'ed',
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handler : function (event) {
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IPython.notebook.insert_cell_below('code');
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IPython.notebook.select_next();
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IPython.notebook.focus_cell();
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return false;
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}
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},
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'y' : {
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help : 'to code',
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help_index : 'ca',
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handler : function (event) {
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IPython.notebook.to_code();
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return false;
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}
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},
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'm' : {
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help : 'to markdown',
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help_index : 'cb',
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handler : function (event) {
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IPython.notebook.to_markdown();
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return false;
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}
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},
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't' : {
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help : 'to raw',
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help_index : 'cc',
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handler : function (event) {
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IPython.notebook.to_raw();
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return false;
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}
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},
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'1' : {
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help : 'to heading 1',
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help_index : 'cd',
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handler : function (event) {
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IPython.notebook.to_heading(undefined, 1);
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return false;
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}
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},
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'2' : {
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help : 'to heading 2',
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help_index : 'ce',
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handler : function (event) {
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IPython.notebook.to_heading(undefined, 2);
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return false;
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}
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},
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'3' : {
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help : 'to heading 3',
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help_index : 'cf',
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handler : function (event) {
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IPython.notebook.to_heading(undefined, 3);
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return false;
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}
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},
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'4' : {
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help : 'to heading 4',
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help_index : 'cg',
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handler : function (event) {
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IPython.notebook.to_heading(undefined, 4);
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return false;
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}
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},
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'5' : {
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help : 'to heading 5',
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help_index : 'ch',
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handler : function (event) {
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IPython.notebook.to_heading(undefined, 5);
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return false;
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}
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},
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'6' : {
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help : 'to heading 6',
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help_index : 'ci',
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handler : function (event) {
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IPython.notebook.to_heading(undefined, 6);
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return false;
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}
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},
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'o' : {
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help : 'toggle output',
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help_index : 'gb',
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handler : function (event) {
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IPython.notebook.toggle_output();
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return false;
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}
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},
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'shift+o' : {
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help : 'toggle output',
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help_index : 'gc',
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handler : function (event) {
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IPython.notebook.toggle_output_scroll();
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return false;
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}
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},
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's' : {
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help : 'save notebook',
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help_index : 'fa',
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handler : function (event) {
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IPython.notebook.save_checkpoint();
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return false;
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}
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},
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'ctrl+j' : {
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help : 'move cell down',
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help_index : 'eb',
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handler : function (event) {
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IPython.notebook.move_cell_down();
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return false;
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}
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},
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'ctrl+k' : {
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help : 'move cell up',
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help_index : 'ea',
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handler : function (event) {
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IPython.notebook.move_cell_up();
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return false;
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}
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},
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'l' : {
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help : 'toggle line numbers',
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help_index : 'ga',
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handler : function (event) {
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IPython.notebook.cell_toggle_line_numbers();
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return false;
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}
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},
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'i' : {
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help : 'interrupt kernel',
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help_index : 'ha',
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handler : function (event) {
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IPython.notebook.kernel.interrupt();
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return false;
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}
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},
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'.' : {
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help : 'restart kernel',
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help_index : 'hb',
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handler : function (event) {
|
|
|
IPython.notebook.restart_kernel();
|
|
|
return false;
|
|
|
}
|
|
|
},
|
|
|
'h' : {
|
|
|
help : 'keyboard shortcuts',
|
|
|
help_index : 'gd',
|
|
|
handler : function (event) {
|
|
|
IPython.quick_help.show_keyboard_shortcuts();
|
|
|
return false;
|
|
|
}
|
|
|
},
|
|
|
'z' : {
|
|
|
help : 'undo last delete',
|
|
|
help_index : 'eh',
|
|
|
handler : function (event) {
|
|
|
IPython.notebook.undelete_cell();
|
|
|
return false;
|
|
|
}
|
|
|
},
|
|
|
'shift+=' : {
|
|
|
help : 'merge cell below',
|
|
|
help_index : 'ej',
|
|
|
handler : function (event) {
|
|
|
IPython.notebook.merge_cell_below();
|
|
|
return false;
|
|
|
}
|
|
|
},
|
|
|
}
|
|
|
|
|
|
|
|
|
// Shortcut manager class
|
|
|
|
|
|
var ShortcutManager = function () {
|
|
|
this._shortcuts = {}
|
|
|
}
|
|
|
|
|
|
ShortcutManager.prototype.help = function () {
|
|
|
var help = [];
|
|
|
for (var shortcut in this._shortcuts) {
|
|
|
var help_string = this._shortcuts[shortcut]['help'];
|
|
|
var help_index = this._shortcuts[shortcut]['help_index'];
|
|
|
if (help_string) {
|
|
|
help.push({
|
|
|
shortcut: shortcut,
|
|
|
help: help_string,
|
|
|
help_index: help_index}
|
|
|
);
|
|
|
}
|
|
|
}
|
|
|
help.sort(function (a, b) {
|
|
|
if (a.help_index > b.help_index)
|
|
|
return 1;
|
|
|
if (a.help_index < b.help_index)
|
|
|
return -1;
|
|
|
return 0;
|
|
|
});
|
|
|
return help;
|
|
|
}
|
|
|
|
|
|
ShortcutManager.prototype.normalize_key = function (key) {
|
|
|
return inv_keycodes[keycodes[key]];
|
|
|
}
|
|
|
|
|
|
ShortcutManager.prototype.normalize_shortcut = function (shortcut) {
|
|
|
// Sort a sequence of + separated modifiers into the order alt+ctrl+meta+shift
|
|
|
var values = shortcut.split("+");
|
|
|
if (values.length === 1) {
|
|
|
return this.normalize_key(values[0])
|
|
|
} else {
|
|
|
var modifiers = values.slice(0,-1);
|
|
|
var key = this.normalize_key(values[values.length-1]);
|
|
|
modifiers.sort();
|
|
|
return modifiers.join('+') + '+' + key;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
ShortcutManager.prototype.event_to_shortcut = function (event) {
|
|
|
// Convert a jQuery keyboard event to a strong based keyboard shortcut
|
|
|
var shortcut = '';
|
|
|
var key = inv_keycodes[event.which]
|
|
|
if (event.altKey && key !== 'alt') {shortcut += 'alt+';}
|
|
|
if (event.ctrlKey && key !== 'ctrl') {shortcut += 'ctrl+';}
|
|
|
if (event.metaKey && key !== 'meta') {shortcut += 'meta+';}
|
|
|
if (event.shiftKey && key !== 'shift') {shortcut += 'shift+';}
|
|
|
shortcut += key;
|
|
|
return shortcut
|
|
|
}
|
|
|
|
|
|
ShortcutManager.prototype.clear_shortcuts = function () {
|
|
|
this._shortcuts = {};
|
|
|
}
|
|
|
|
|
|
ShortcutManager.prototype.add_shortcut = function (shortcut, data) {
|
|
|
if (typeof(data) === 'function') {
|
|
|
data = {help: '', help_index: '', handler: data}
|
|
|
}
|
|
|
data.help_index = data.help_index || '';
|
|
|
data.help = data.help || '';
|
|
|
if (data.help_index === '') {
|
|
|
data.help_index = 'zz';
|
|
|
}
|
|
|
shortcut = this.normalize_shortcut(shortcut);
|
|
|
this._shortcuts[shortcut] = data;
|
|
|
}
|
|
|
|
|
|
ShortcutManager.prototype.add_shortcuts = function (data) {
|
|
|
for (var shortcut in data) {
|
|
|
this.add_shortcut(shortcut, data[shortcut]);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
ShortcutManager.prototype.remove_shortcut = function (shortcut) {
|
|
|
shortcut = this.normalize_shortcut(shortcut);
|
|
|
delete this._shortcuts[shortcut];
|
|
|
}
|
|
|
|
|
|
ShortcutManager.prototype.call_handler = function (event) {
|
|
|
var shortcut = this.event_to_shortcut(event);
|
|
|
var data = this._shortcuts[shortcut];
|
|
|
if (data !== undefined) {
|
|
|
var handler = data['handler'];
|
|
|
if (handler !== undefined) {
|
|
|
return handler(event);
|
|
|
}
|
|
|
}
|
|
|
return true;
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// Main keyboard manager for the notebook
|
|
|
|
|
|
var KeyboardManager = function () {
|
|
|
this.mode = 'command';
|
|
|
this.enabled = true;
|
|
|
this._delete_count = 0;
|
|
|
this.bind_events();
|
|
|
this.command_shortcuts = new ShortcutManager();
|
|
|
this.command_shortcuts.add_shortcuts(default_common_shortcuts);
|
|
|
this.command_shortcuts.add_shortcuts(default_command_shortcuts);
|
|
|
this.edit_shortcuts = new ShortcutManager();
|
|
|
this.edit_shortcuts.add_shortcuts(default_common_shortcuts);
|
|
|
this.edit_shortcuts.add_shortcuts(default_edit_shortcuts);
|
|
|
};
|
|
|
|
|
|
KeyboardManager.prototype.bind_events = function () {
|
|
|
var that = this;
|
|
|
$(document).keydown(function (event) {
|
|
|
return that.handle_keydown(event);
|
|
|
});
|
|
|
};
|
|
|
|
|
|
KeyboardManager.prototype.handle_keydown = function (event) {
|
|
|
var notebook = IPython.notebook;
|
|
|
|
|
|
if (event.which === keycodes['esc']) {
|
|
|
// Intercept escape at highest level to avoid closing
|
|
|
// websocket connection with firefox
|
|
|
event.preventDefault();
|
|
|
}
|
|
|
|
|
|
if (!this.enabled) {
|
|
|
if (event.which === keycodes['esc']) {
|
|
|
// ESC
|
|
|
notebook.command_mode();
|
|
|
return false;
|
|
|
}
|
|
|
return true;
|
|
|
}
|
|
|
|
|
|
if (this.mode === 'edit') {
|
|
|
return this.edit_shortcuts.call_handler(event);
|
|
|
} else if (this.mode === 'command') {
|
|
|
return this.command_shortcuts.call_handler(event);
|
|
|
}
|
|
|
return true;
|
|
|
}
|
|
|
|
|
|
KeyboardManager.prototype.edit_mode = function () {
|
|
|
this.last_mode = this.mode;
|
|
|
this.mode = 'edit';
|
|
|
}
|
|
|
|
|
|
KeyboardManager.prototype.command_mode = function () {
|
|
|
this.last_mode = this.mode;
|
|
|
this.mode = 'command';
|
|
|
}
|
|
|
|
|
|
KeyboardManager.prototype.enable = function () {
|
|
|
this.enabled = true;
|
|
|
}
|
|
|
|
|
|
KeyboardManager.prototype.disable = function () {
|
|
|
this.enabled = false;
|
|
|
}
|
|
|
|
|
|
KeyboardManager.prototype.register_events = function (e) {
|
|
|
var that = this;
|
|
|
e.on('focusin', function () {
|
|
|
that.command_mode();
|
|
|
that.disable();
|
|
|
});
|
|
|
e.on('focusout', function () {
|
|
|
that.command_mode();
|
|
|
that.enable();
|
|
|
});
|
|
|
// There are times (raw_input) where we remove the element from the DOM before
|
|
|
// focusout is called. In this case we bind to the remove event of jQueryUI,
|
|
|
// which gets triggered upon removal.
|
|
|
e.on('remove', function () {
|
|
|
that.command_mode();
|
|
|
that.enable();
|
|
|
});
|
|
|
}
|
|
|
|
|
|
|
|
|
IPython.keycodes = keycodes;
|
|
|
IPython.inv_keycodes = inv_keycodes;
|
|
|
IPython.default_common_shortcuts = default_common_shortcuts;
|
|
|
IPython.default_edit_shortcuts = default_edit_shortcuts;
|
|
|
IPython.default_command_shortcuts = default_command_shortcuts;
|
|
|
IPython.ShortcutManager = ShortcutManager;
|
|
|
IPython.KeyboardManager = KeyboardManager;
|
|
|
|
|
|
return IPython;
|
|
|
|
|
|
}(IPython));
|
|
|
|
