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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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var browser = IPython.utils.browser[0];
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var platform = IPython.utils.platform;
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// Default keyboard shortcuts
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var default_common_shortcuts = {
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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, select below',
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help_index : 'ba',
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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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'ctrl+enter' : {
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help : 'run cell',
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help_index : 'bb',
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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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'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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if (platform === 'MacOS') {
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default_common_shortcuts['cmd+s'] =
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{
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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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} else {
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default_common_shortcuts['ctrl+s'] =
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{
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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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}
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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 index = IPython.notebook.get_selected_index();
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if (index !== null && index !== 0) {
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var cell = IPython.notebook.get_cell(index);
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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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},
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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 index = IPython.notebook.get_selected_index();
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if (index !== null && index !== (IPython.notebook.ncells()-1)) {
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var cell = IPython.notebook.get_cell(index);
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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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},
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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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'tab' : {
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help : 'indent or complete',
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help_index : 'ec',
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},
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'shift+tab' : {
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help : 'tooltip',
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help_index : 'ed',
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},
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};
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if (platform === 'MacOS') {
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default_edit_shortcuts['cmd+/'] =
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{
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help : 'toggle comment',
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help_index : 'ee'
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};
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default_edit_shortcuts['cmd+]'] =
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{
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help : 'indent',
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help_index : 'ef'
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};
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default_edit_shortcuts['cmd+['] =
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{
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help : 'dedent',
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help_index : 'eg'
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};
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} else {
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default_edit_shortcuts['ctrl+/'] =
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{
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help : 'toggle comment',
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help_index : 'ee'
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};
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default_edit_shortcuts['ctrl+]'] =
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{
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help : 'indent',
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help_index : 'ef'
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};
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default_edit_shortcuts['ctrl+['] =
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{
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help : 'dedent',
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help_index : 'eg'
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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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IPython.notebook.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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IPython.notebook.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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IPython.notebook.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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IPython.notebook.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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'shift+v' : {
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help : 'paste cell above',
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help_index : 'eg',
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handler : function (event) {
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IPython.notebook.paste_cell_above();
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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 : 'eh',
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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 : 'ej',
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count: 2,
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handler : function (event) {
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IPython.notebook.delete_cell();
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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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'r' : {
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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 scrolling',
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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 (press twice)',
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help_index : 'ha',
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count: 2,
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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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'0' : {
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help : 'restart kernel (press twice)',
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help_index : 'hb',
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count: 2,
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handler : function (event) {
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IPython.notebook.restart_kernel();
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return false;
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}
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},
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'h' : {
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help : 'keyboard shortcuts',
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help_index : 'ge',
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handler : function (event) {
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IPython.quick_help.show_keyboard_shortcuts();
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return false;
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}
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},
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'z' : {
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help : 'undo last delete',
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help_index : 'ei',
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handler : function (event) {
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IPython.notebook.undelete_cell();
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return false;
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}
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},
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'shift+m' : {
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help : 'merge cell below',
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help_index : 'ek',
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handler : function (event) {
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IPython.notebook.merge_cell_below();
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return false;
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}
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},
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'q' : {
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help : 'close pager',
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help_index : 'gd',
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handler : function (event) {
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IPython.pager.collapse();
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return false;
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}
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},
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};
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// Main keyboard manager for the notebook
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var ShortcutManager = IPython.keyboard.ShortcutManager;
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var keycodes = IPython.keyboard.keycodes;
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var KeyboardManager = function () {
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this.mode = 'command';
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this.enabled = true;
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this.bind_events();
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this.command_shortcuts = new ShortcutManager();
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this.command_shortcuts.add_shortcuts(default_common_shortcuts);
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this.command_shortcuts.add_shortcuts(default_command_shortcuts);
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this.edit_shortcuts = new ShortcutManager();
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this.edit_shortcuts.add_shortcuts(default_common_shortcuts);
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this.edit_shortcuts.add_shortcuts(default_edit_shortcuts);
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};
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KeyboardManager.prototype.bind_events = function () {
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var that = this;
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$(document).keydown(function (event) {
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return that.handle_keydown(event);
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});
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};
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KeyboardManager.prototype.handle_keydown = function (event) {
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var notebook = IPython.notebook;
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if (event.which === keycodes.esc) {
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// Intercept escape at highest level to avoid closing
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// websocket connection with firefox
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event.preventDefault();
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}
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if (!this.enabled) {
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if (event.which === keycodes.esc) {
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// ESC
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notebook.command_mode();
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return false;
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}
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return true;
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}
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if (this.mode === 'edit') {
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return this.edit_shortcuts.call_handler(event);
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} else if (this.mode === 'command') {
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return this.command_shortcuts.call_handler(event);
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}
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return true;
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};
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KeyboardManager.prototype.edit_mode = function () {
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this.last_mode = this.mode;
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this.mode = 'edit';
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};
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KeyboardManager.prototype.command_mode = function () {
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this.last_mode = this.mode;
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this.mode = 'command';
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};
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KeyboardManager.prototype.enable = function () {
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this.enabled = true;
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};
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KeyboardManager.prototype.disable = function () {
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this.enabled = false;
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};
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KeyboardManager.prototype.register_events = function (e) {
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var that = this;
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var handle_focus = function () {
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that.disable();
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};
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var handle_blur = function () {
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that.enable();
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};
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e.on('focusin', handle_focus);
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e.on('focusout', handle_blur);
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// TODO: Very strange. The focusout event does not seem fire for the
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// bootstrap textboxes on FF25&26... This works around that by
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// registering focus and blur events recursively on all inputs within
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// registered element.
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e.find('input').blur(handle_blur);
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e.on('DOMNodeInserted', function (event) {
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var target = $(event.target);
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if (target.is('input')) {
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target.blur(handle_blur);
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} else {
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target.find('input').blur(handle_blur);
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}
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});
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// There are times (raw_input) where we remove the element from the DOM before
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// focusout is called. In this case we bind to the remove event of jQueryUI,
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// which gets triggered upon removal, iff it is focused at the time.
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// is_focused must be used to check for the case where an element within
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// the element being removed is focused.
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e.on('remove', function () {
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if (IPython.utils.is_focused(e[0])) {
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that.enable();
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}
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});
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};
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IPython.default_common_shortcuts = default_common_shortcuts;
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IPython.default_edit_shortcuts = default_edit_shortcuts;
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IPython.default_command_shortcuts = default_command_shortcuts;
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IPython.KeyboardManager = KeyboardManager;
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return IPython;
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}(IPython));
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