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// Copyright (c) IPython Development Team.
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// Distributed under the terms of the Modified BSD License.
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/**
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*
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*
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* @module keyboardmanager
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* @namespace keyboardmanager
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* @class KeyboardManager
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*/
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define([
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'base/js/namespace',
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'jquery',
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'base/js/utils',
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'base/js/keyboard',
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], function(IPython, $, utils, keyboard) {
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"use strict";
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// Main keyboard manager for the notebook
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var keycodes = keyboard.keycodes;
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var KeyboardManager = function (options) {
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/**
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* A class to deal with keyboard event and shortcut
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*
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* @class KeyboardManager
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* @constructor
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* @param options {dict} Dictionary of keyword arguments :
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* @param options.events {$(Events)} instance
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* @param options.pager: {Pager} pager instance
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*/
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this.mode = 'command';
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this.enabled = true;
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this.pager = options.pager;
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this.quick_help = undefined;
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this.notebook = undefined;
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this.last_mode = undefined;
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this.bind_events();
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this.env = {pager:this.pager};
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this.actions = options.actions;
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this.command_shortcuts = new keyboard.ShortcutManager(undefined, options.events, this.actions, this.env );
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this.command_shortcuts.add_shortcuts(this.get_default_common_shortcuts());
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this.command_shortcuts.add_shortcuts(this.get_default_command_shortcuts());
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this.edit_shortcuts = new keyboard.ShortcutManager(undefined, options.events, this.actions, this.env);
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this.edit_shortcuts.add_shortcuts(this.get_default_common_shortcuts());
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this.edit_shortcuts.add_shortcuts(this.get_default_edit_shortcuts());
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Object.seal(this);
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};
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/**
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* Return a dict of common shortcut
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* @method get_default_common_shortcuts
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*
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* @example Example of returned shortcut
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* ```
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* 'shortcut-key': 'action-name'
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* // a string representing the shortcut as dash separated value.
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* // e.g. 'shift' , 'shift-enter', 'cmd-t'
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*```
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*/
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KeyboardManager.prototype.get_default_common_shortcuts = function() {
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return {
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'shift' : 'ipython.ignore',
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'shift-enter' : 'ipython.run-select-next',
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'ctrl-enter' : 'ipython.execute-in-place',
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'alt-enter' : 'ipython.execute-and-insert-after',
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// cmd on mac, ctrl otherwise
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'cmdtrl-s' : 'ipython.save-notebook',
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};
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};
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KeyboardManager.prototype.get_default_edit_shortcuts = function() {
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return {
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'esc' : 'ipython.go-to-command-mode',
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'ctrl-m' : 'ipython.go-to-command-mode',
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'up' : 'ipython.move-cursor-up-or-previous-cell',
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'down' : 'ipython.move-cursor-down-or-next-cell',
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'ctrl-shift--' : 'ipython.split-cell-at-cursor',
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'ctrl-shift-subtract' : 'ipython.split-cell-at-cursor'
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};
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};
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KeyboardManager.prototype.get_default_command_shortcuts = function() {
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return {
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'shift-space': 'ipython.scroll-up',
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'shift-v' : 'ipython.paste-cell-before',
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'shift-m' : 'ipython.merge-selected-cell-with-cell-after',
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'shift-o' : 'ipython.toggle-output-scrolling-selected-cell',
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'enter' : 'ipython.enter-edit-mode',
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'space' : 'ipython.scroll-down',
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'down' : 'ipython.select-next-cell',
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'i,i' : 'ipython.interrupt-kernel',
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'0,0' : 'ipython.restart-kernel',
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'd,d' : 'ipython.delete-cell',
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'esc': 'ipython.close-pager',
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'up' : 'ipython.select-previous-cell',
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'k' : 'ipython.select-previous-cell',
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'j' : 'ipython.select-next-cell',
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'x' : 'ipython.cut-selected-cell',
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'c' : 'ipython.copy-selected-cell',
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'v' : 'ipython.paste-cell-after',
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'a' : 'ipython.insert-cell-before',
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'b' : 'ipython.insert-cell-after',
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'y' : 'ipython.change-selected-cell-to-code-cell',
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'm' : 'ipython.change-selected-cell-to-markdown-cell',
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'r' : 'ipython.change-selected-cell-to-raw-cell',
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'1' : 'ipython.change-selected-cell-to-heading-1',
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'2' : 'ipython.change-selected-cell-to-heading-2',
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'3' : 'ipython.change-selected-cell-to-heading-3',
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'4' : 'ipython.change-selected-cell-to-heading-4',
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'5' : 'ipython.change-selected-cell-to-heading-5',
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'6' : 'ipython.change-selected-cell-to-heading-6',
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'o' : 'ipython.toggle-output-visibility-selected-cell',
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's' : 'ipython.save-notebook',
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'l' : 'ipython.toggle-line-number-selected-cell',
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'h' : 'ipython.show-keyboard-shortcut-help-dialog',
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'z' : 'ipython.undo-last-cell-deletion',
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'q' : 'ipython.close-pager',
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};
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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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if(event._ipkmIgnore===true||(event.originalEvent||{})._ipkmIgnore===true){
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return false;
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}
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return that.handle_keydown(event);
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});
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};
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KeyboardManager.prototype.set_notebook = function (notebook) {
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this.notebook = notebook;
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this.actions.extend_env({notebook:notebook});
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};
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KeyboardManager.prototype.set_quickhelp = function (notebook) {
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this.actions.extend_env({quick_help:notebook});
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};
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KeyboardManager.prototype.handle_keydown = function (event) {
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/**
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* returning false from this will stop event propagation
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**/
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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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this.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 (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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// For backwards compatibility.
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IPython.KeyboardManager = KeyboardManager;
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return {'KeyboardManager': KeyboardManager};
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});
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