Fixed bug

IPython/html/static/notebook/js/keyboardmanager.js

@@ -1,581 +1,573
-//----------------------------------------------------------------------------
-//  Copyright (C) 2011  The IPython Development Team
-//
-//  Distributed under the terms of the BSD License.  The full license is in
-//  the file COPYING, distributed as part of this software.
-//----------------------------------------------------------------------------
-
-//============================================================================
-// Keyboard management
-//============================================================================
+// Copyright (c) IPython Development Team.
+// Distributed under the terms of the Modified BSD License.
 
 var IPython = (function (IPython) {
     "use strict";
 
     var browser = utils.browser[0];
     var platform = utils.platform;
 
     // Main keyboard manager for the notebook
     var keycodes = keyboard.keycodes;
 
     var KeyboardManager = function (options) {
         // Constructor
         //
         // Parameters:
         //  options: dictionary
         //      Dictionary of keyword arguments.
         //          events: $(Events) instance
         //          pager: Pager instance
         this.mode = 'command';
         this.enabled = true;
         this.pager = options.pager;
         this.quick_help = undefined;
         this.notebook = undefined;
         this.bind_events();
         this.command_shortcuts = new keyboard.ShortcutManager(undefined, options.events);
         this.command_shortcuts.add_shortcuts(this.get_default_common_shortcuts());
         this.command_shortcuts.add_shortcuts(this.get_default_command_shortcuts());
         this.edit_shortcuts = new keyboard.ShortcutManager(undefined, options.events);
         this.edit_shortcuts.add_shortcuts(this.get_default_common_shortcuts());
         this.edit_shortcuts.add_shortcuts(this.get_default_edit_shortcuts());
     };
 
     KeyboardManager.prototype.get_default_common_shortcuts = function() {
         var that = this;
         var shortcuts = {
         'shift' : {
             help    : '',
             help_index : '',
             handler : function (event) {
                 // ignore shift keydown
                 return true;
             }
         },
         'shift-enter' : {
             help    : 'run cell, select below',
             help_index : 'ba',
             handler : function (event) {
                     that.notebook.execute_cell_and_select_below();
                 return false;
             }
         },
         'ctrl-enter' : {
             help    : 'run cell',
             help_index : 'bb',
             handler : function (event) {
                     that.notebook.execute_cell();
                 return false;
             }
         },
         'alt-enter' : {
             help    : 'run cell, insert below',
             help_index : 'bc',
             handler : function (event) {
                     that.notebook.execute_cell_and_insert_below();
                 return false;
             }
         }
     };
 
     if (platform === 'MacOS') {
             shortcuts['cmd-s'] =
             {
                 help    : 'save notebook',
                 help_index : 'fb',
                 handler : function (event) {
                         that.notebook.save_checkpoint();
                     event.preventDefault();
                     return false;
                 }
             };
     } else {
             shortcuts['ctrl-s'] =
             {
                 help    : 'save notebook',
                 help_index : 'fb',
                 handler : function (event) {
                         that.notebook.save_checkpoint();
                     event.preventDefault();
                     return false;
                 }
             };
     }
         return shortcuts;
     };
 
     KeyboardManager.prototype.get_default_edit_shortcuts = function() {
         var that = this;
         return {
         'esc' : {
             help    : 'command mode',
             help_index : 'aa',
             handler : function (event) {
                     that.notebook.command_mode();
                 return false;
             }
         },
         'ctrl-m' : {
             help    : 'command mode',
             help_index : 'ab',
             handler : function (event) {
                     that.notebook.command_mode();
                 return false;
             }
         },
         'up' : {
             help    : '',
             help_index : '',
             handler : function (event) {
                     var index = that.notebook.get_selected_index();
                     var cell = that.notebook.get_cell(index);
                 if (cell && cell.at_top() && index !== 0) {
                     event.preventDefault();
                         that.notebook.command_mode();
                         that.notebook.select_prev();
                         that.notebook.edit_mode();
                         var cm = that.notebook.get_selected_cell().code_mirror;
                     cm.setCursor(cm.lastLine(), 0);
                     return false;
                 } else if (cell) {
                     var cm = cell.code_mirror;
                     cm.execCommand('goLineUp');
                     return false;
                 }
             }
         },
         'down' : {
             help    : '',
             help_index : '',
             handler : function (event) {
                     var index = that.notebook.get_selected_index();
                     var cell = that.notebook.get_cell(index);
                     if (cell.at_bottom() && index !== (that.notebook.ncells()-1)) {
                     event.preventDefault();
                         that.notebook.command_mode();
                         that.notebook.select_next();
                         that.notebook.edit_mode();
                         var cm = that.notebook.get_selected_cell().code_mirror;
                     cm.setCursor(0, 0);
                     return false;
                 } else {
                     var cm = cell.code_mirror;
                     cm.execCommand('goLineDown');
                     return false;
                 }
             }
         },
         'ctrl-shift--' : {
             help    : 'split cell',
             help_index : 'ea',
             handler : function (event) {
                     that.notebook.split_cell();
                 return false;
             }
         },
         'ctrl-shift-subtract' : {
             help    : '',
             help_index : 'eb',
             handler : function (event) {
                     that.notebook.split_cell();
                 return false;
             }
         },
     };
     };
 
     KeyboardManager.prototype.get_default_command_shortcuts = function() {
         var that = this;
         return {
         'space': {
             help: "Scroll down to next H1 cell",
             handler: function(event) {
                 return that.notebook.scrollmanager.scroll(1);
             },
         },
         'shift-space': {
             help: "Scroll up to previous H1 cell",
             handler: function(event) {
                 return that.notebook.scrollmanager.scroll(-1);
             },
         },
         'enter' : {
             help    : 'edit mode',
             help_index : 'aa',
             handler : function (event) {
                     that.notebook.edit_mode();
                 return false;
             }
         },
         'up' : {
             help    : 'select previous cell',
             help_index : 'da',
             handler : function (event) {
                     var index = that.notebook.get_selected_index();
                 if (index !== 0 && index !== null) {
                         that.notebook.select_prev();
                         that.notebook.focus_cell();
                 }
                 return false;
             }
         },
         'down' : {
             help    : 'select next cell',
             help_index : 'db',
             handler : function (event) {
                     var index = that.notebook.get_selected_index();
                     if (index !== (that.notebook.ncells()-1) && index !== null) {
                         that.notebook.select_next();
                         that.notebook.focus_cell();
                 }
                 return false;
             }
         },
         'k' : {
             help    : 'select previous cell',
             help_index : 'dc',
             handler : function (event) {
                     var index = that.notebook.get_selected_index();
                 if (index !== 0 && index !== null) {
                         that.notebook.select_prev();
                         that.notebook.focus_cell();
                 }
                 return false;
             }
         },
         'j' : {
             help    : 'select next cell',
             help_index : 'dd',
             handler : function (event) {
                     var index = that.notebook.get_selected_index();
                     if (index !== (that.notebook.ncells()-1) && index !== null) {
                         that.notebook.select_next();
                         that.notebook.focus_cell();
                 }
                 return false;
             }
         },
         'x' : {
             help    : 'cut cell',
             help_index : 'ee',
             handler : function (event) {
                     that.notebook.cut_cell();
                 return false;
             }
         },
         'c' : {
             help    : 'copy cell',
             help_index : 'ef',
             handler : function (event) {
                     that.notebook.copy_cell();
                 return false;
             }
         },
         'shift-v' : {
             help    : 'paste cell above',
             help_index : 'eg',
             handler : function (event) {
                     that.notebook.paste_cell_above();
                 return false;
             }
         },
         'v' : {
             help    : 'paste cell below',
             help_index : 'eh',
             handler : function (event) {
                     that.notebook.paste_cell_below();
                 return false;
             }
         },
         'd' : {
             help    : 'delete cell (press twice)',
             help_index : 'ej',
             count: 2,
             handler : function (event) {
                     that.notebook.delete_cell();
                 return false;
             }
         },
         'a' : {
             help    : 'insert cell above',
             help_index : 'ec',
             handler : function (event) {
                     that.notebook.insert_cell_above();
                     that.notebook.select_prev();
                     that.notebook.focus_cell();
                 return false;
             }
         },
         'b' : {
             help    : 'insert cell below',
             help_index : 'ed',
             handler : function (event) {
                     that.notebook.insert_cell_below();
                     that.notebook.select_next();
                     that.notebook.focus_cell();
                 return false;
             }
         },
         'y' : {
             help    : 'to code',
             help_index : 'ca',
             handler : function (event) {
                     that.notebook.to_code();
                 return false;
             }
         },
         'm' : {
             help    : 'to markdown',
             help_index : 'cb',
             handler : function (event) {
                     that.notebook.to_markdown();
                 return false;
             }
         },
         'r' : {
             help    : 'to raw',
             help_index : 'cc',
             handler : function (event) {
                     that.notebook.to_raw();
                 return false;
             }
         },
         '1' : {
             help    : 'to heading 1',
             help_index : 'cd',
             handler : function (event) {
                     that.notebook.to_heading(undefined, 1);
                 return false;
             }
         },
         '2' : {
             help    : 'to heading 2',
             help_index : 'ce',
             handler : function (event) {
                     that.notebook.to_heading(undefined, 2);
                 return false;
             }
         },
         '3' : {
             help    : 'to heading 3',
             help_index : 'cf',
             handler : function (event) {
                     that.notebook.to_heading(undefined, 3);
                 return false;
             }
         },
         '4' : {
             help    : 'to heading 4',
             help_index : 'cg',
             handler : function (event) {
                     that.notebook.to_heading(undefined, 4);
                 return false;
             }
         },
         '5' : {
             help    : 'to heading 5',
             help_index : 'ch',
             handler : function (event) {
                     that.notebook.to_heading(undefined, 5);
                 return false;
             }
         },
         '6' : {
             help    : 'to heading 6',
             help_index : 'ci',
             handler : function (event) {
                     that.notebook.to_heading(undefined, 6);
                 return false;
             }
         },
         'o' : {
             help    : 'toggle output',
             help_index : 'gb',
             handler : function (event) {
                     that.notebook.toggle_output();
                 return false;
             }
         },
         'shift-o' : {
             help    : 'toggle output scrolling',
             help_index : 'gc',
             handler : function (event) {
                     that.notebook.toggle_output_scroll();
                 return false;
             }
         },
         's' : {
             help    : 'save notebook',
             help_index : 'fa',
             handler : function (event) {
                     that.notebook.save_checkpoint();
                 return false;
             }
         },
         'ctrl-j' : {
             help    : 'move cell down',
             help_index : 'eb',
             handler : function (event) {
                     that.notebook.move_cell_down();
                 return false;
             }
         },
         'ctrl-k' : {
             help    : 'move cell up',
             help_index : 'ea',
             handler : function (event) {
                     that.notebook.move_cell_up();
                 return false;
             }
         },
         'l' : {
             help    : 'toggle line numbers',
             help_index : 'ga',
             handler : function (event) {
                     that.notebook.cell_toggle_line_numbers();
                 return false;
             }
         },
         'i' : {
             help    : 'interrupt kernel (press twice)',
             help_index : 'ha',
             count: 2,
             handler : function (event) {
                     that.notebook.kernel.interrupt();
                 return false;
             }
         },
         '0' : {
             help    : 'restart kernel (press twice)',
             help_index : 'hb',
             count: 2,
             handler : function (event) {
                     that.notebook.restart_kernel();
                 return false;
             }
         },
         'h' : {
             help    : 'keyboard shortcuts',
             help_index : 'ge',
             handler : function (event) {
                     that.quick_help.show_keyboard_shortcuts();
                 return false;
             }
         },
         'z' : {
             help    : 'undo last delete',
             help_index : 'ei',
             handler : function (event) {
                     that.notebook.undelete_cell();
                 return false;
             }
         },
         'shift-m' : {
             help    : 'merge cell below',
             help_index : 'ek',
             handler : function (event) {
                     that.notebook.merge_cell_below();
                 return false;
             }
         },
         'q' : {
             help    : 'close pager',
             help_index : 'gd',
             handler : function (event) {
                     that.pager.collapse();
                 return false;
             }
         },
     };
     };
 
     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 = this.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;
         var handle_focus = function () {
             that.disable();
         };
         var handle_blur = function () {
             that.enable();
         };
         e.on('focusin', handle_focus);
         e.on('focusout', handle_blur);
         // TODO: Very strange. The focusout event does not seem fire for the 
         // bootstrap textboxes on FF25&26...  This works around that by 
         // registering focus and blur events recursively on all inputs within
         // registered element.
         e.find('input').blur(handle_blur);
         e.on('DOMNodeInserted', function (event) {
             var target = $(event.target);
             if (target.is('input')) {
                 target.blur(handle_blur);
             } else {
                 target.find('input').blur(handle_blur);    
             }
           });
         // 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, iff it is focused at the time.
         // is_focused must be used to check for the case where an element within
         // the element being removed is focused.
         e.on('remove', function () {
             if (utils.is_focused(e[0])) {
                 that.enable();
             }
         });
     };
 
     // For backwards compatability.
     IPython.KeyboardManager = KeyboardManager;
 
     return {'KeyboardManager': KeyboardManager};
 });