use momentjs for nice dates

IPython/html/static/components

@@ -1,1 +1,1 b''
-Subproject commit a80ac7a2f6d045e3903d3c9e189a10cc96255b05
+Subproject commit b3909af1b61ca7a412481759fdb441ecdfb3ab66

IPython/html/static/notebook/js/menubar.js

@@ -1,351 +1,352 b''
 // Copyright (c) IPython Development Team.
 // Distributed under the terms of the Modified BSD License.
 
 define([
     'base/js/namespace',
     'jquery',
     'base/js/utils',
     'notebook/js/tour',
     'bootstrap',
-], function(IPython, $, utils, tour) {
+    'moment',
+], function(IPython, $, utils, tour, bootstrap, moment) {
     "use strict";
     
     var MenuBar = function (selector, options) {
         // Constructor
         //
         // A MenuBar Class to generate the menubar of IPython notebook
         //
         // Parameters:
         //  selector: string
         //  options: dictionary
         //      Dictionary of keyword arguments.
         //          notebook: Notebook instance
         //          layout_manager: LayoutManager instance
         //          events: $(Events) instance
         //          save_widget: SaveWidget instance
         //          quick_help: QuickHelp instance
         //          base_url : string
         //          notebook_path : string
         //          notebook_name : string
         options = options || {};
         this.base_url = options.base_url || utils.get_body_data("baseUrl");
         this.selector = selector;
         this.notebook = options.notebook;
         this.layout_manager = options.layout_manager;
         this.events = options.events;
         this.save_widget = options.save_widget;
         this.quick_help = options.quick_help;
 
         try {
             this.tour = new tour.Tour(this.notebook, this.events);
         } catch (e) {
             this.tour = undefined;
             console.log("Failed to instantiate Notebook Tour", e);
         }
 
         if (this.selector !== undefined) {
             this.element = $(selector);
             this.style();
             this.bind_events();
         }
     };
 
     // TODO: This has definitively nothing to do with style ...
     MenuBar.prototype.style = function () {
         var that = this;
         this.element.find("li").click(function (event, ui) {
                 // The selected cell loses focus when the menu is entered, so we
                 // re-select it upon selection.
                 var i = that.notebook.get_selected_index();
                 that.notebook.select(i);
             }
         );
     };
 
     MenuBar.prototype._nbconvert = function (format, download) {
         download = download || false;
         var notebook_path = this.notebook.notebook_path;
         var notebook_name = this.notebook.notebook_name;
         if (this.notebook.dirty) {
             this.notebook.save_notebook({async : false});
         }
         var url = utils.url_join_encode(
             this.base_url,
             'nbconvert',
             format,
             notebook_path,
             notebook_name
         ) + "?download=" + download.toString();
 
         window.open(url);
     };
 
     MenuBar.prototype.bind_events = function () {
         //  File
         var that = this;
         this.element.find('#new_notebook').click(function () {
             that.notebook.new_notebook();
         });
         this.element.find('#open_notebook').click(function () {
             window.open(utils.url_join_encode(
                 that.notebook.base_url,
                 'tree',
                 that.notebook.notebook_path
             ));
         });
         this.element.find('#copy_notebook').click(function () {
             that.notebook.copy_notebook();
             return false;
         });
         this.element.find('#download_ipynb').click(function () {
             var base_url = that.notebook.base_url;
             var notebook_path = that.notebook.notebook_path;
             var notebook_name = that.notebook.notebook_name;
             if (that.notebook.dirty) {
                 that.notebook.save_notebook({async : false});
             }
             
             var url = utils.url_join_encode(
                 base_url,
                 'files',
                 notebook_path,
                 notebook_name
             );
             window.location.assign(url);
         });
         
         this.element.find('#print_preview').click(function () {
             that._nbconvert('html', false);
         });
 
         this.element.find('#download_py').click(function () {
             that._nbconvert('python', true);
         });
 
         this.element.find('#download_html').click(function () {
             that._nbconvert('html', true);
         });
 
         this.element.find('#download_rst').click(function () {
             that._nbconvert('rst', true);
         });
 
         this.element.find('#download_pdf').click(function () {
             that._nbconvert('pdf', true);
         });
 
         this.element.find('#rename_notebook').click(function () {
             that.save_widget.rename_notebook({notebook: that.notebook});
         });
         this.element.find('#save_checkpoint').click(function () {
             that.notebook.save_checkpoint();
         });
         this.element.find('#restore_checkpoint').click(function () {
         });
         this.element.find('#trust_notebook').click(function () {
             that.notebook.trust_notebook();
         });
         this.events.on('trust_changed.Notebook', function (event, trusted) {
             if (trusted) {
                 that.element.find('#trust_notebook')
                     .addClass("disabled")
                     .find("a").text("Trusted Notebook");
             } else {
                 that.element.find('#trust_notebook')
                     .removeClass("disabled")
                     .find("a").text("Trust Notebook");
             }
         });
         this.element.find('#kill_and_exit').click(function () {
             that.notebook.session.delete();
             setTimeout(function(){
                 // allow closing of new tabs in Chromium, impossible in FF
                 window.open('', '_self', '');
                 window.close();
             }, 500);
         });
         // Edit
         this.element.find('#cut_cell').click(function () {
             that.notebook.cut_cell();
         });
         this.element.find('#copy_cell').click(function () {
             that.notebook.copy_cell();
         });
         this.element.find('#delete_cell').click(function () {
             that.notebook.delete_cell();
         });
         this.element.find('#undelete_cell').click(function () {
             that.notebook.undelete_cell();
         });
         this.element.find('#split_cell').click(function () {
             that.notebook.split_cell();
         });
         this.element.find('#merge_cell_above').click(function () {
             that.notebook.merge_cell_above();
         });
         this.element.find('#merge_cell_below').click(function () {
             that.notebook.merge_cell_below();
         });
         this.element.find('#move_cell_up').click(function () {
             that.notebook.move_cell_up();
         });
         this.element.find('#move_cell_down').click(function () {
             that.notebook.move_cell_down();
         });
         this.element.find('#edit_nb_metadata').click(function () {
             that.notebook.edit_metadata({
                 notebook: that.notebook,
                 keyboard_manager: that.notebook.keyboard_manager});
         });
         
         // View
         this.element.find('#toggle_header').click(function () {
             $('div#header').toggle();
             that.layout_manager.do_resize();
         });
         this.element.find('#toggle_toolbar').click(function () {
             $('div#maintoolbar').toggle();
             that.layout_manager.do_resize();
         });
         // Insert
         this.element.find('#insert_cell_above').click(function () {
             that.notebook.insert_cell_above('code');
             that.notebook.select_prev();
         });
         this.element.find('#insert_cell_below').click(function () {
             that.notebook.insert_cell_below('code');
             that.notebook.select_next();
         });
         // Cell
         this.element.find('#run_cell').click(function () {
             that.notebook.execute_cell();
         });
         this.element.find('#run_cell_select_below').click(function () {
             that.notebook.execute_cell_and_select_below();
         });
         this.element.find('#run_cell_insert_below').click(function () {
             that.notebook.execute_cell_and_insert_below();
         });
         this.element.find('#run_all_cells').click(function () {
             that.notebook.execute_all_cells();
         });
         this.element.find('#run_all_cells_above').click(function () {
             that.notebook.execute_cells_above();
         });
         this.element.find('#run_all_cells_below').click(function () {
             that.notebook.execute_cells_below();
         });
         this.element.find('#to_code').click(function () {
             that.notebook.to_code();
         });
         this.element.find('#to_markdown').click(function () {
             that.notebook.to_markdown();
         });
         this.element.find('#to_raw').click(function () {
             that.notebook.to_raw();
         });
         this.element.find('#to_heading1').click(function () {
             that.notebook.to_heading(undefined, 1);
         });
         this.element.find('#to_heading2').click(function () {
             that.notebook.to_heading(undefined, 2);
         });
         this.element.find('#to_heading3').click(function () {
             that.notebook.to_heading(undefined, 3);
         });
         this.element.find('#to_heading4').click(function () {
             that.notebook.to_heading(undefined, 4);
         });
         this.element.find('#to_heading5').click(function () {
             that.notebook.to_heading(undefined, 5);
         });
         this.element.find('#to_heading6').click(function () {
             that.notebook.to_heading(undefined, 6);
         });
         
         this.element.find('#toggle_current_output').click(function () {
             that.notebook.toggle_output();
         });
         this.element.find('#toggle_current_output_scroll').click(function () {
             that.notebook.toggle_output_scroll();
         });
         this.element.find('#clear_current_output').click(function () {
             that.notebook.clear_output();
         });
         
         this.element.find('#toggle_all_output').click(function () {
             that.notebook.toggle_all_output();
         });
         this.element.find('#toggle_all_output_scroll').click(function () {
             that.notebook.toggle_all_output_scroll();
         });
         this.element.find('#clear_all_output').click(function () {
             that.notebook.clear_all_output();
         });
         
         // Kernel
         this.element.find('#int_kernel').click(function () {
             that.notebook.session.interrupt_kernel();
         });
         this.element.find('#restart_kernel').click(function () {
             that.notebook.restart_kernel();
         });
         // Help
         if (this.tour) {
             this.element.find('#notebook_tour').click(function () {
                 that.tour.start();
             });
         } else {
             this.element.find('#notebook_tour').addClass("disabled");
         }
         this.element.find('#keyboard_shortcuts').click(function () {
             that.quick_help.show_keyboard_shortcuts();
         });
         
         this.update_restore_checkpoint(null);
         
         this.events.on('checkpoints_listed.Notebook', function (event, data) {
             that.update_restore_checkpoint(that.notebook.checkpoints);
         });
         
         this.events.on('checkpoint_created.Notebook', function (event, data) {
             that.update_restore_checkpoint(that.notebook.checkpoints);
         });
     };
 
     MenuBar.prototype.update_restore_checkpoint = function(checkpoints) {
         var ul = this.element.find("#restore_checkpoint").find("ul");
         ul.empty();
         if (!checkpoints || checkpoints.length === 0) {
             ul.append(
                 $("<li/>")
                 .addClass("disabled")
                 .append(
                     $("<a/>")
                     .text("No checkpoints")
                 )
             );
             return;
         }
         
         var that = this;
         checkpoints.map(function (checkpoint) {
             var d = new Date(checkpoint.last_modified);
             ul.append(
                 $("<li/>").append(
                     $("<a/>")
                     .attr("href", "#")
-                    .text(d.format("mmm dd HH:MM:ss"))
+                    .text(moment(d).format("LLLL"))
                     .click(function () {
                         that.notebook.restore_checkpoint_dialog(checkpoint);
                     })
                 )
             );
         });
     };
 
     // Backwards compatability.
     IPython.MenuBar = MenuBar;
 
     return {'MenuBar': MenuBar};
 });

IPython/html/static/notebook/js/notificationarea.js

@@ -1,244 +1,245 b''
 // Copyright (c) IPython Development Team.
 // Distributed under the terms of the Modified BSD License.
 
 define([
     'base/js/namespace',
     'jquery',
     'base/js/utils',
     'base/js/dialog',
     'notebook/js/notificationwidget',
-], function(IPython, $, utils, dialog, notificationwidget) {
+    'moment'
+], function(IPython, $, utils, dialog, notificationwidget, moment) {
     "use strict";
 
     var NotificationArea = function (selector, options) {
         // Constructor
         //
         // Parameters:
         //  selector: string
         //  options: dictionary
         //      Dictionary of keyword arguments.
         //          notebook: Notebook instance
         //          events: $(Events) instance
         //          save_widget: SaveWidget instance
         this.selector = selector;
         this.events = options.events;
         this.save_widget = options.save_widget;
         this.notebook = options.notebook;
         this.keyboard_manager = options.keyboard_manager;
         if (this.selector !== undefined) {
             this.element = $(selector);
         }
         this.widget_dict = {};
     };
 
     NotificationArea.prototype.temp_message = function (msg, timeout, css_class) {
         if( css_class == 'danger') {css_class = 'ui-state-error';}
         if( css_class == 'warning') {css_class = 'ui-state-highlight';}
         var tdiv = $('<div>')
             .addClass('notification_widget')
             .addClass(css_class)
             .hide()
             .text(msg);
 
         $(this.selector).append(tdiv);
         var tmout = Math.max(1500,(timeout||1500));
         tdiv.fadeIn(100);
 
         setTimeout(function () {
                 tdiv.fadeOut(100, function () {tdiv.remove();});
             }, tmout);
     };
 
     NotificationArea.prototype.widget = function(name) {
         if(this.widget_dict[name] === undefined) {
             return this.new_notification_widget(name);
         }
         return this.get_widget(name);
     };
 
     NotificationArea.prototype.get_widget = function(name) {
         if(this.widget_dict[name] === undefined) {
             throw('no widgets with this name');
         }
         return this.widget_dict[name];
     };
 
     NotificationArea.prototype.new_notification_widget = function(name) {
         if(this.widget_dict[name] !== undefined) {
             throw('widget with that name already exists ! ');
         }
         var div = $('<div/>').attr('id','notification_'+name);
         $(this.selector).append(div);
         this.widget_dict[name] = new notificationwidget.NotificationWidget('#notification_'+name);
         return this.widget_dict[name];
     };
 
     NotificationArea.prototype.init_notification_widgets = function() {
         var that = this;
         var knw = this.new_notification_widget('kernel');
         var $kernel_ind_icon = $("#kernel_indicator_icon");
         var $modal_ind_icon = $("#modal_indicator_icon");
 
         // Command/Edit mode
         this.events.on('edit_mode.Notebook',function () {
             that.save_widget.update_document_title();
             $modal_ind_icon.attr('class','edit_mode_icon').attr('title','Edit Mode');
         });
 
         this.events.on('command_mode.Notebook',function () {
             that.save_widget.update_document_title();
             $modal_ind_icon.attr('class','command_mode_icon').attr('title','Command Mode');
         });
 
         // Implicitly start off in Command mode, switching to Edit mode will trigger event
         $modal_ind_icon.attr('class','command_mode_icon').attr('title','Command Mode');
 
         // Kernel events
         this.events.on('status_idle.Kernel',function () {
             that.save_widget.update_document_title();
             $kernel_ind_icon.attr('class','kernel_idle_icon').attr('title','Kernel Idle');
         });
 
         this.events.on('status_busy.Kernel',function () {
             window.document.title='(Busy) '+window.document.title;
             $kernel_ind_icon.attr('class','kernel_busy_icon').attr('title','Kernel Busy');
         });
 
         this.events.on('status_restarting.Kernel',function () {
             that.save_widget.update_document_title();
             knw.set_message("Restarting kernel", 2000);
         });
 
         this.events.on('status_interrupting.Kernel',function () {
             knw.set_message("Interrupting kernel", 2000);
         });
         
         // Start the kernel indicator in the busy state, and send a kernel_info request.
         // When the kernel_info reply arrives, the kernel is idle.
         $kernel_ind_icon.attr('class','kernel_busy_icon').attr('title','Kernel Busy');
 
         this.events.on('status_started.Kernel', function (evt, data) {
             data.kernel.kernel_info(function () {
                 that.events.trigger('status_idle.Kernel');
             });
         });
 
         this.events.on('status_dead.Kernel',function () {
             var msg = 'The kernel has died, and the automatic restart has failed.' +
                 ' It is possible the kernel cannot be restarted.' +
                 ' If you are not able to restart the kernel, you will still be able to save' +
                 ' the notebook, but running code will no longer work until the notebook' +
                 ' is reopened.';
 
             dialog.modal({
                 title: "Dead kernel",
                 body : msg,
                 keyboard_manager: that.keyboard_manager,
                 notebook: that.notebook,
                 buttons : {
                     "Manual Restart": {
                         class: "btn-danger",
                         click: function () {
                             that.events.trigger('status_restarting.Kernel');
                             that.notebook.start_kernel();
                         }
                     },
                     "Don't restart": {}
                 }
             });
         });
 
         this.events.on('websocket_closed.Kernel', function (event, data) {
             var kernel = data.kernel;
             var ws_url = data.ws_url;
             var early = data.early;
             var msg;
             if (!early) {
                     knw.set_message('Reconnecting WebSockets', 1000);
                     setTimeout(function () {
                         kernel.start_channels();
                     }, 5000);
                 return;
             }
             console.log('WebSocket connection failed: ', ws_url);
             msg = "A WebSocket connection could not be established." +
                 " You will NOT be able to run code. Check your" +
                 " network connection or notebook server configuration.";
             dialog.modal({
                 title: "WebSocket connection failed",
                 body: msg,
                 keyboard_manager: that.keyboard_manager,
                 notebook: that.notebook,
                 buttons : {
                     "OK": {},
                     "Reconnect": {
                         click: function () {
                             knw.set_message('Reconnecting WebSockets', 1000);
                             setTimeout(function () {
                                 kernel.start_channels();
                             }, 5000);
                         }
                     }
                 }
             });
         });
 
 
         var nnw = this.new_notification_widget('notebook');
 
         // Notebook events
         this.events.on('notebook_loading.Notebook', function () {
             nnw.set_message("Loading notebook",500);
         });
         this.events.on('notebook_loaded.Notebook', function () {
             nnw.set_message("Notebook loaded",500);
         });
         this.events.on('notebook_saving.Notebook', function () {
             nnw.set_message("Saving notebook",500);
         });
         this.events.on('notebook_saved.Notebook', function () {
             nnw.set_message("Notebook saved",2000);
         });
         this.events.on('notebook_save_failed.Notebook', function (evt, xhr, status, data) {
             nnw.warning(data || "Notebook save failed");
         });
         
         // Checkpoint events
         this.events.on('checkpoint_created.Notebook', function (evt, data) {
             var msg = "Checkpoint created";
             if (data.last_modified) {
                 var d = new Date(data.last_modified);
-                msg = msg + ": " + d.format("HH:MM:ss");
+                msg = msg + ": " + moment(d).format("HH:mm:ss");
             }
             nnw.set_message(msg, 2000);
         });
         this.events.on('checkpoint_failed.Notebook', function () {
             nnw.warning("Checkpoint failed");
         });
         this.events.on('checkpoint_deleted.Notebook', function () {
             nnw.set_message("Checkpoint deleted", 500);
         });
         this.events.on('checkpoint_delete_failed.Notebook', function () {
             nnw.warning("Checkpoint delete failed");
         });
         this.events.on('checkpoint_restoring.Notebook', function () {
             nnw.set_message("Restoring to checkpoint...", 500);
         });
         this.events.on('checkpoint_restore_failed.Notebook', function () {
             nnw.warning("Checkpoint restore failed");
         });
 
         // Autosave events
         this.events.on('autosave_disabled.Notebook', function () {
             nnw.set_message("Autosave disabled", 2000);
         });
         this.events.on('autosave_enabled.Notebook', function (evt, interval) {
             nnw.set_message("Saving every " + interval / 1000 + "s", 1000);
         });
 
     };
 
     IPython.NotificationArea = NotificationArea;
 
     return {'NotificationArea': NotificationArea};
 });

IPython/html/static/notebook/js/savewidget.js

@@ -1,173 +1,242 b''
 // Copyright (c) IPython Development Team.
 // Distributed under the terms of the Modified BSD License.
 
 define([
     'base/js/namespace',
     'jquery',
     'base/js/utils',
     'base/js/dialog',
     'base/js/keyboard',
-    'dateformat',
-], function(IPython, $, utils, dialog, keyboard, dateformat) {
+    'moment',
+], function(IPython, $, utils, dialog, keyboard, moment) {
     "use strict";
 
     var SaveWidget = function (selector, options) {
         // TODO: Remove circular ref.
         this.notebook = undefined;
         this.selector = selector;
         this.events = options.events;
+        this._checkpoint_date = undefined;
         this.keyboard_manager = options.keyboard_manager;
         if (this.selector !== undefined) {
             this.element = $(selector);
             this.bind_events();
         }
     };
 
 
     SaveWidget.prototype.bind_events = function () {
         var that = this;
         this.element.find('span#notebook_name').click(function () {
             that.rename_notebook();
         });
         this.element.find('span#notebook_name').hover(function () {
             $(this).addClass("ui-state-hover");
         }, function () {
             $(this).removeClass("ui-state-hover");
         });
         this.events.on('notebook_loaded.Notebook', function () {
             that.update_notebook_name();
             that.update_document_title();
         });
         this.events.on('notebook_saved.Notebook', function () {
             that.update_notebook_name();
             that.update_document_title();
         });
         this.events.on('notebook_renamed.Notebook', function () {
             that.update_notebook_name();
             that.update_document_title();
             that.update_address_bar();
         });
         this.events.on('notebook_save_failed.Notebook', function () {
             that.set_save_status('Autosave Failed!');
         });
         this.events.on('checkpoints_listed.Notebook', function (event, data) {
-            that.set_last_checkpoint(data[0]);
+            that._set_last_checkpoint(data[0]);
         });
 
         this.events.on('checkpoint_created.Notebook', function (event, data) {
-            that.set_last_checkpoint(data);
+            that._set_last_checkpoint(data);
         });
         this.events.on('set_dirty.Notebook', function (event, data) {
             that.set_autosaved(data.value);
         });
     };
 
 
     SaveWidget.prototype.rename_notebook = function (options) {
         options = options || {};
         var that = this;
         var dialog_body = $('<div/>').append(
             $("<p/>").addClass("rename-message")
                 .text('Enter a new notebook name:')
         ).append(
             $("<br/>")
         ).append(
             $('<input/>').attr('type','text').attr('size','25').addClass('form-control')
             .val(that.notebook.get_notebook_name())
         );
         dialog.modal({
             title: "Rename Notebook",
             body: dialog_body,
             notebook: options.notebook,
             keyboard_manager: this.keyboard_manager,
             buttons : {
                 "Cancel": {},
                 "OK": {
                     class: "btn-primary",
                     click: function () {
                     var new_name = $(this).find('input').val();
                     if (!that.notebook.test_notebook_name(new_name)) {
                         $(this).find('.rename-message').text(
                             "Invalid notebook name. Notebook names must "+
                             "have 1 or more characters and can contain any characters " +
                             "except :/\\. Please enter a new notebook name:"
                         );
                         return false;
                     } else {
                         that.notebook.rename(new_name);
                     }
                 }}
                 },
             open : function (event, ui) {
                 var that = $(this);
                 // Upon ENTER, click the OK button.
                 that.find('input[type="text"]').keydown(function (event, ui) {
                     if (event.which === keyboard.keycodes.enter) {
                         that.find('.btn-primary').first().click();
                         return false;
                     }
                 });
                 that.find('input[type="text"]').focus().select();
             }
         });
     };
 
 
     SaveWidget.prototype.update_notebook_name = function () {
         var nbname = this.notebook.get_notebook_name();
         this.element.find('span#notebook_name').text(nbname);
     };
 
 
     SaveWidget.prototype.update_document_title = function () {
         var nbname = this.notebook.get_notebook_name();
         document.title = nbname;
     };
-    
+
     SaveWidget.prototype.update_address_bar = function(){
         var base_url = this.notebook.base_url;
         var nbname = this.notebook.notebook_name;
         var path = this.notebook.notebook_path;
         var state = {path : path, name: nbname};
         window.history.replaceState(state, "", utils.url_join_encode(
             base_url,
             "notebooks",
             path,
             nbname)
         );
     };
 
 
     SaveWidget.prototype.set_save_status = function (msg) {
         this.element.find('span#autosave_status').text(msg);
     };
 
-    SaveWidget.prototype.set_checkpoint_status = function (msg) {
-        this.element.find('span#checkpoint_status').text(msg);
+    SaveWidget.prototype._set_checkpoint_status = function (human_date, iso_date) {
+        var el = this.element.find('span#checkpoint_status')
+        if(human_date){
+            el.text("Last Checkpoint: "+human_date).attr('title',iso_date);
+        } else {
+            el.text('').attr('title','no-checkpoint')
+        }
     };
 
-    SaveWidget.prototype.set_last_checkpoint = function (checkpoint) {
-        if (!checkpoint) {
-            this.set_checkpoint_status("");
+    // compute (roughly) the remaining time in millisecond until the next
+    // moment.js relative time update of the string, which by default 
+    // happend at 
+    //  (a few seconds ago) 
+    //  - 45sec, 
+    //  (a minute ago) 
+    //  - 90sec,
+    //      ( x minutes ago) 
+    //      - then every minutes until
+    //  - 45 min,
+    //      (an hour ago) 
+    //  - 1h45, 
+    //      (x hours ago )
+    //      - then every hours
+    //  - 22 hours ago
+    var _next_timeago_update = function(deltatime_ms){
+        var s = 1000; 
+        var m = 60*s;
+        var h = 60*m;
+
+        var mtt = moment.relativeTimeThreshold;
+
+        if(deltatime_ms < mtt.s*s){
+            return mtt.s*s-deltatime_ms;
+        } else if (deltatime_ms < (mtt.s*s+m)) {
+            return (mtt.s*s+m)-deltatime_ms;
+        } else if (deltatime_ms < mtt.m*m){
+            return m;
+        } else if (deltatime_ms < (mtt.m*m+h)){
+            return (mtt.m*m+h)-deltatime_ms;
+        } else  {
+            return h;
+        }
+
+
+    }
+
+    SaveWidget.prototype._regularly_update_checkpoint_date = function(){
+       if (!this._checkpoint_date) {
+            this.set_checkpoint_status(null);
+            console.log('no checkpoint done');
             return;
         }
-        var d = new Date(checkpoint.last_modified);
-        this.set_checkpoint_status(
-            "Last Checkpoint: " + dateformat(d,'mmm dd HH:MM')
-        );
+        var chkd = moment(this._checkpoint_date);
+        var longdate = chkd.format('llll');
+
+        var that = this;
+        var recall  = function(t){
+            // recall slightly later (1s) as long timeout in js might be imprecise,
+            // and you want to be call **after** the change of formatting should happend.
+            return setTimeout($.proxy(that._regularly_update_checkpoint_date, that),(t+1000))
+        }
+        var tdelta = Math.ceil(new Date()-this._checkpoint_date);
+
+        // update regularly for the first 6hours and show
+        // <x time> ago
+        if(tdelta < tdelta < 6*3600*1000){  
+            recall(_next_timeago_update(tdelta));
+            this._set_checkpoint_status( chkd.fromNow(), longdate);
+        // otherwise update every hour and show
+        // <Today | yesterday|...> at hh,mm,ss
+        } else  {
+            recall(1*3600*1000)
+            this._set_checkpoint_status( chkd.calendar(), longdate);
+        }
+
+    }
+
+    SaveWidget.prototype._set_last_checkpoint = function (checkpoint) {
+        this._checkpoint_date = new Date(checkpoint.last_modified);
+        this._regularly_update_checkpoint_date();
+
     };
 
     SaveWidget.prototype.set_autosaved = function (dirty) {
         if (dirty) {
             this.set_save_status("(unsaved changes)");
         } else {
             this.set_save_status("(autosaved)");
         }
     };
 
     // Backwards compatibility.
     IPython.SaveWidget = SaveWidget;
 
     return {'SaveWidget': SaveWidget};
 
 });

IPython/html/static/notebook/less/savewidget.less

@@ -1,34 +1,34 b''
 span#save_widget {
     padding: 0px 5px;
     margin-top: 12px;
 }
 
 span#checkpoint_status, span#autosave_status {
     font-size: small;
 }
 
 @media (max-width: 767px) {
     span#save_widget {
         font-size: small;
     }
     span#checkpoint_status, span#autosave_status {
         font-size: x-small;
     }
 }
 
 @media (max-width: 767px) {
     span#checkpoint_status, span#autosave_status {
         display: none;
     }
 }
 
 @media (min-width: 768px) and (max-width: 979px) {
     span#checkpoint_status {
         display: none;
     }
     span#autosave_status {
         font-size: x-small;
     }
 }
 
-  
  No newline at end of file
+  

IPython/html/templates/page.html

@@ -1,107 +1,108 b''
 <!DOCTYPE HTML>
 <html>
 
 <head>
     <meta charset="utf-8">
 
     <title>{% block title %}IPython Notebook{% endblock %}</title>
     <link rel="shortcut icon" type="image/x-icon" href="{{static_url("base/images/favicon.ico") }}">
     <meta http-equiv="X-UA-Compatible" content="chrome=1">
     <link rel="stylesheet" href="{{static_url("components/jquery-ui/themes/smoothness/jquery-ui.min.css") }}" type="text/css" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     
     {% block stylesheet %}
     <link rel="stylesheet" href="{{ static_url("style/style.min.css") }}" type="text/css"/>
     {% endblock %}
     <link rel="stylesheet" href="{{ static_url("custom/custom.css") }}" type="text/css" />
     <script src="{{static_url("components/requirejs/require.js") }}" type="text/javascript" charset="utf-8"></script>
     <script>
       require.config({
           baseUrl: '{{static_url("", include_version=False)}}',
           paths: {
             nbextensions : '{{ base_url }}nbextensions',
             underscore : 'components/underscore/underscore-min',
             backbone : 'components/backbone/backbone-min',
             jquery: 'components/jquery/jquery.min',
             bootstrap: 'components/bootstrap/js/bootstrap.min',
             bootstraptour: 'components/bootstrap-tour/build/js/bootstrap-tour.min',
             dateformat: 'dateformat/date.format',
             jqueryui: 'components/jquery-ui/ui/minified/jquery-ui.min',
             highlight: 'components/highlight.js/build/highlight.pack',
+            moment: "components/moment/moment",
           },
           shim: {
             underscore: {
               exports: '_'
             },
             backbone: {
               deps: ["underscore", "jquery"],
               exports: "Backbone"
             },
             bootstrap: {
               deps: ["jquery"],
               exports: "bootstrap"
             },
             bootstraptour: {
               deps: ["bootstrap"],
               exports: "Tour"
             },
             dateformat: {
               exports: "dateFormat"
             },
             jqueryui: {
               deps: ["jquery"],
               exports: "$"
             },
             highlight: {
               exports: "hljs"
             },
           }
       });
     </script>
 
     {% block meta %}
     {% endblock %}
 
 </head>
 
 <body {% block params %}{% endblock %}>
 
 <noscript>
     <div id='noscript'>
       IPython Notebook requires JavaScript.<br>
       Please enable it to proceed.
   </div>
 </noscript>
 
 <div id="header" class="navbar navbar-static-top">
   <div class="container">
   <div id="ipython_notebook" class="nav navbar-brand pull-left"><a href="{{base_url}}tree/{{notebook_path}}" alt='dashboard'><img src='{{static_url("base/images/ipynblogo.png") }}' alt='IPython Notebook'/></a></div>
 
   {% block login_widget %}
 
     <span id="login_widget">
       {% if logged_in %}
         <button id="logout">Logout</button>
       {% elif login_available and not logged_in %}
         <button id="login">Login</button>
       {% endif %}
     </span>
 
   {% endblock %}
 
   {% block header %}
   {% endblock %}
   </div>
 </div>
 
 <div id="site">
 {% block site %}
 {% endblock %}
 </div>
 
 {% block script %}
 {% endblock %}
 
 </body>
 
 </html>

setupbase.py

@@ -1,728 +1,730 b''
 # encoding: utf-8
 """
 This module defines the things that are used in setup.py for building IPython
 
 This includes:
 
     * The basic arguments to setup
     * Functions for finding things like packages, package data, etc.
     * A function for checking dependencies.
 """
 
 # Copyright (c) IPython Development Team.
 # Distributed under the terms of the Modified BSD License.
 
 from __future__ import print_function
 
 import errno
 import os
 import sys
 
 from distutils import log
 from distutils.command.build_py import build_py
 from distutils.command.build_scripts import build_scripts
 from distutils.command.install import install
 from distutils.command.install_scripts import install_scripts
 from distutils.cmd import Command
 from fnmatch import fnmatch
 from glob import glob
 from subprocess import check_call
 
 from setupext import install_data_ext
 
 #-------------------------------------------------------------------------------
 # Useful globals and utility functions
 #-------------------------------------------------------------------------------
 
 # A few handy globals
 isfile = os.path.isfile
 pjoin = os.path.join
 repo_root = os.path.dirname(os.path.abspath(__file__))
 
 def oscmd(s):
     print(">", s)
     os.system(s)
 
 # Py3 compatibility hacks, without assuming IPython itself is installed with
 # the full py3compat machinery.
 
 try:
     execfile
 except NameError:
     def execfile(fname, globs, locs=None):
         locs = locs or globs
         exec(compile(open(fname).read(), fname, "exec"), globs, locs)
 
 # A little utility we'll need below, since glob() does NOT allow you to do
 # exclusion on multiple endings!
 def file_doesnt_endwith(test,endings):
     """Return true if test is a file and its name does NOT end with any
     of the strings listed in endings."""
     if not isfile(test):
         return False
     for e in endings:
         if test.endswith(e):
             return False
     return True
 
 #---------------------------------------------------------------------------
 # Basic project information
 #---------------------------------------------------------------------------
 
 # release.py contains version, authors, license, url, keywords, etc.
 execfile(pjoin(repo_root, 'IPython','core','release.py'), globals())
 
 # Create a dict with the basic information
 # This dict is eventually passed to setup after additional keys are added.
 setup_args = dict(
       name             = name,
       version          = version,
       description      = description,
       long_description = long_description,
       author           = author,
       author_email     = author_email,
       url              = url,
       download_url     = download_url,
       license          = license,
       platforms        = platforms,
       keywords         = keywords,
       classifiers      = classifiers,
       cmdclass         = {'install_data': install_data_ext},
       )
 
 
 #---------------------------------------------------------------------------
 # Find packages
 #---------------------------------------------------------------------------
 
 def find_packages():
     """
     Find all of IPython's packages.
     """
     excludes = ['deathrow', 'quarantine']
     packages = []
     for dir,subdirs,files in os.walk('IPython'):
         package = dir.replace(os.path.sep, '.')
         if any(package.startswith('IPython.'+exc) for exc in excludes):
             # package is to be excluded (e.g. deathrow)
             continue
         if '__init__.py' not in files:
             # not a package
             continue
         packages.append(package)
     return packages
 
 #---------------------------------------------------------------------------
 # Find package data
 #---------------------------------------------------------------------------
 
 def find_package_data():
     """
     Find IPython's package_data.
     """
     # This is not enough for these things to appear in an sdist.
     # We need to muck with the MANIFEST to get this to work
     
     # exclude components and less from the walk;
     # we will build the components separately
     excludes = [
         pjoin('static', 'components'),
         pjoin('static', '*', 'less'),
     ]
     
     # walk notebook resources:
     cwd = os.getcwd()
     os.chdir(os.path.join('IPython', 'html'))
     static_data = []
     for parent, dirs, files in os.walk('static'):
         if any(fnmatch(parent, pat) for pat in excludes):
             # prevent descending into subdirs
             dirs[:] = []
             continue
         for f in files:
             static_data.append(pjoin(parent, f))
     
     components = pjoin("static", "components")
     # select the components we actually need to install
     # (there are lots of resources we bundle for sdist-reasons that we don't actually use)
     static_data.extend([
         pjoin(components, "backbone", "backbone-min.js"),
         pjoin(components, "bootstrap", "js", "bootstrap.min.js"),
         pjoin(components, "bootstrap-tour", "build", "css", "bootstrap-tour.min.css"),
         pjoin(components, "bootstrap-tour", "build", "js", "bootstrap-tour.min.js"),
         pjoin(components, "font-awesome", "fonts", "*.*"),
         pjoin(components, "google-caja", "html-css-sanitizer-minified.js"),
         pjoin(components, "highlight.js", "build", "highlight.pack.js"),
         pjoin(components, "jquery", "jquery.min.js"),
         pjoin(components, "jquery-ui", "ui", "minified", "jquery-ui.min.js"),
         pjoin(components, "jquery-ui", "themes", "smoothness", "jquery-ui.min.css"),
         pjoin(components, "jquery-ui", "themes", "smoothness", "images", "*"),
         pjoin(components, "marked", "lib", "marked.js"),
         pjoin(components, "requirejs", "require.js"),
         pjoin(components, "underscore", "underscore-min.js"),
+        pjoin(components, "moment", "moment.js"),
+        pjoin(components, "moment", "min","moment.min.js"),
     ])
     
     # Ship all of Codemirror's CSS and JS
     for parent, dirs, files in os.walk(pjoin(components, 'codemirror')):
         for f in files:
             if f.endswith(('.js', '.css')):
                 static_data.append(pjoin(parent, f))
     
     os.chdir(os.path.join('tests',))
     js_tests = glob('*.js') + glob('*/*.js')
 
     os.chdir(os.path.join(cwd, 'IPython', 'nbconvert'))
     nbconvert_templates = [os.path.join(dirpath, '*.*')
                             for dirpath, _, _ in os.walk('templates')]
 
     os.chdir(cwd)
 
     package_data = {
         'IPython.config.profile' : ['README*', '*/*.py'],
         'IPython.core.tests' : ['*.png', '*.jpg'],
         'IPython.lib.tests' : ['*.wav'],
         'IPython.testing.plugin' : ['*.txt'],
         'IPython.html' : ['templates/*'] + static_data,
         'IPython.html.tests' : js_tests,
         'IPython.qt.console' : ['resources/icon/*.svg'],
         'IPython.nbconvert' : nbconvert_templates +
             [
                 'tests/files/*.*',
                 'exporters/tests/files/*.*',
                 'preprocessors/tests/files/*.*',
             ],
         'IPython.nbconvert.filters' : ['marked.js'],
         'IPython.nbformat' : ['tests/*.ipynb','v3/v3.withref.json']
     }
     
     return package_data
 
 
 def check_package_data(package_data):
     """verify that package_data globs make sense"""
     print("checking package data")
     for pkg, data in package_data.items():
         pkg_root = pjoin(*pkg.split('.'))
         for d in data:
             path = pjoin(pkg_root, d)
             if '*' in path:
                 assert len(glob(path)) > 0, "No files match pattern %s" % path
             else:
                 assert os.path.exists(path), "Missing package data: %s" % path
 
 
 def check_package_data_first(command):
     """decorator for checking package_data before running a given command
     
     Probably only needs to wrap build_py
     """
     class DecoratedCommand(command):
         def run(self):
             check_package_data(self.package_data)
             command.run(self)
     return DecoratedCommand
 
 
 #---------------------------------------------------------------------------
 # Find data files
 #---------------------------------------------------------------------------
 
 def make_dir_struct(tag,base,out_base):
     """Make the directory structure of all files below a starting dir.
 
     This is just a convenience routine to help build a nested directory
     hierarchy because distutils is too stupid to do this by itself.
 
     XXX - this needs a proper docstring!
     """
 
     # we'll use these a lot below
     lbase = len(base)
     pathsep = os.path.sep
     lpathsep = len(pathsep)
 
     out = []
     for (dirpath,dirnames,filenames) in os.walk(base):
         # we need to strip out the dirpath from the base to map it to the
         # output (installation) path.  This requires possibly stripping the
         # path separator, because otherwise pjoin will not work correctly
         # (pjoin('foo/','/bar') returns '/bar').
 
         dp_eff = dirpath[lbase:]
         if dp_eff.startswith(pathsep):
             dp_eff = dp_eff[lpathsep:]
         # The output path must be anchored at the out_base marker
         out_path = pjoin(out_base,dp_eff)
         # Now we can generate the final filenames. Since os.walk only produces
         # filenames, we must join back with the dirpath to get full valid file
         # paths:
         pfiles = [pjoin(dirpath,f) for f in filenames]
         # Finally, generate the entry we need, which is a pari of (output
         # path, files) for use as a data_files parameter in install_data.
         out.append((out_path, pfiles))
 
     return out
 
 
 def find_data_files():
     """
     Find IPython's data_files.
 
     Just man pages at this point.
     """
 
     manpagebase = pjoin('share', 'man', 'man1')
 
     # Simple file lists can be made by hand
     manpages = [f for f in glob(pjoin('docs','man','*.1.gz')) if isfile(f)]
     if not manpages:
         # When running from a source tree, the manpages aren't gzipped
         manpages = [f for f in glob(pjoin('docs','man','*.1')) if isfile(f)]
 
     # And assemble the entire output list
     data_files = [ (manpagebase, manpages) ]
 
     return data_files
 
 
 def make_man_update_target(manpage):
     """Return a target_update-compliant tuple for the given manpage.
 
     Parameters
     ----------
     manpage : string
       Name of the manpage, must include the section number (trailing number).
 
     Example
     -------
 
     >>> make_man_update_target('ipython.1') #doctest: +NORMALIZE_WHITESPACE
     ('docs/man/ipython.1.gz',
      ['docs/man/ipython.1'],
      'cd docs/man && gzip -9c ipython.1 > ipython.1.gz')
     """
     man_dir = pjoin('docs', 'man')
     manpage_gz = manpage + '.gz'
     manpath = pjoin(man_dir, manpage)
     manpath_gz = pjoin(man_dir, manpage_gz)
     gz_cmd = ( "cd %(man_dir)s && gzip -9c %(manpage)s > %(manpage_gz)s" %
                locals() )
     return (manpath_gz, [manpath], gz_cmd)
 
 # The two functions below are copied from IPython.utils.path, so we don't need
 # to import IPython during setup, which fails on Python 3.
 
 def target_outdated(target,deps):
     """Determine whether a target is out of date.
 
     target_outdated(target,deps) -> 1/0
 
     deps: list of filenames which MUST exist.
     target: single filename which may or may not exist.
 
     If target doesn't exist or is older than any file listed in deps, return
     true, otherwise return false.
     """
     try:
         target_time = os.path.getmtime(target)
     except os.error:
         return 1
     for dep in deps:
         dep_time = os.path.getmtime(dep)
         if dep_time > target_time:
             #print "For target",target,"Dep failed:",dep # dbg
             #print "times (dep,tar):",dep_time,target_time # dbg
             return 1
     return 0
 
 
 def target_update(target,deps,cmd):
     """Update a target with a given command given a list of dependencies.
 
     target_update(target,deps,cmd) -> runs cmd if target is outdated.
 
     This is just a wrapper around target_outdated() which calls the given
     command if target is outdated."""
 
     if target_outdated(target,deps):
         os.system(cmd)
 
 #---------------------------------------------------------------------------
 # Find scripts
 #---------------------------------------------------------------------------
 
 def find_entry_points():
     """Find IPython's scripts.
 
     if entry_points is True:
         return setuptools entry_point-style definitions
     else:
         return file paths of plain scripts [default]
 
     suffix is appended to script names if entry_points is True, so that the
     Python 3 scripts get named "ipython3" etc.
     """
     ep = [
             'ipython%s = IPython:start_ipython',
             'ipcontroller%s = IPython.parallel.apps.ipcontrollerapp:launch_new_instance',
             'ipengine%s = IPython.parallel.apps.ipengineapp:launch_new_instance',
             'ipcluster%s = IPython.parallel.apps.ipclusterapp:launch_new_instance',
             'iptest%s = IPython.testing.iptestcontroller:main',
         ]
     suffix = str(sys.version_info[0])
     return [e % '' for e in ep] + [e % suffix for e in ep]
 
 script_src = """#!{executable}
 # This script was automatically generated by setup.py
 if __name__ == '__main__':
     from {mod} import {func}
     {func}()
 """
 
 class build_scripts_entrypt(build_scripts):
     def run(self):
         self.mkpath(self.build_dir)
         outfiles = []
         for script in find_entry_points():
             name, entrypt = script.split('=')
             name = name.strip()
             entrypt = entrypt.strip()
             outfile = os.path.join(self.build_dir, name)
             outfiles.append(outfile)
             print('Writing script to', outfile)
 
             mod, func = entrypt.split(':')
             with open(outfile, 'w') as f:
                 f.write(script_src.format(executable=sys.executable,
                                           mod=mod, func=func))
 
         return outfiles, outfiles
 
 class install_lib_symlink(Command):
     user_options = [
         ('install-dir=', 'd', "directory to install to"),
         ]
 
     def initialize_options(self):
         self.install_dir = None
 
     def finalize_options(self):
         self.set_undefined_options('symlink',
                                    ('install_lib', 'install_dir'),
                                   )
 
     def run(self):
         if sys.platform == 'win32':
             raise Exception("This doesn't work on Windows.")
         pkg = os.path.join(os.getcwd(), 'IPython')
         dest = os.path.join(self.install_dir, 'IPython')
         if os.path.islink(dest):
             print('removing existing symlink at %s' % dest)
             os.unlink(dest)
         print('symlinking %s -> %s' % (pkg, dest))
         os.symlink(pkg, dest)
 
 class unsymlink(install):
     def run(self):
         dest = os.path.join(self.install_lib, 'IPython')
         if os.path.islink(dest):
             print('removing symlink at %s' % dest)
             os.unlink(dest)
         else:
             print('No symlink exists at %s' % dest)
 
 class install_symlinked(install):
     def run(self):
         if sys.platform == 'win32':
             raise Exception("This doesn't work on Windows.")
 
         # Run all sub-commands (at least those that need to be run)
         for cmd_name in self.get_sub_commands():
             self.run_command(cmd_name)
     
     # 'sub_commands': a list of commands this command might have to run to
     # get its work done.  See cmd.py for more info.
     sub_commands = [('install_lib_symlink', lambda self:True),
                     ('install_scripts_sym', lambda self:True),
                    ]
 
 class install_scripts_for_symlink(install_scripts):
     """Redefined to get options from 'symlink' instead of 'install'.
     
     I love distutils almost as much as I love setuptools.
     """
     def finalize_options(self):
         self.set_undefined_options('build', ('build_scripts', 'build_dir'))
         self.set_undefined_options('symlink',
                                    ('install_scripts', 'install_dir'),
                                    ('force', 'force'),
                                    ('skip_build', 'skip_build'),
                                   )
 
 #---------------------------------------------------------------------------
 # Verify all dependencies
 #---------------------------------------------------------------------------
 
 def check_for_dependencies():
     """Check for IPython's dependencies.
 
     This function should NOT be called if running under setuptools!
     """
     from setupext.setupext import (
         print_line, print_raw, print_status,
         check_for_sphinx, check_for_pygments,
         check_for_nose, check_for_pexpect,
         check_for_pyzmq, check_for_readline,
         check_for_jinja2, check_for_tornado
     )
     print_line()
     print_raw("BUILDING IPYTHON")
     print_status('python', sys.version)
     print_status('platform', sys.platform)
     if sys.platform == 'win32':
         print_status('Windows version', sys.getwindowsversion())
 
     print_raw("")
     print_raw("OPTIONAL DEPENDENCIES")
 
     check_for_sphinx()
     check_for_pygments()
     check_for_nose()
     if os.name == 'posix':
         check_for_pexpect()
     check_for_pyzmq()
     check_for_tornado()
     check_for_readline()
     check_for_jinja2()
 
 #---------------------------------------------------------------------------
 # VCS related
 #---------------------------------------------------------------------------
 
 # utils.submodule has checks for submodule status
 execfile(pjoin('IPython','utils','submodule.py'), globals())
 
 class UpdateSubmodules(Command):
     """Update git submodules
     
     IPython's external javascript dependencies live in a separate repo.
     """
     description = "Update git submodules"
     user_options = []
     
     def initialize_options(self):
         pass
     
     def finalize_options(self):
         pass
     
     def run(self):
         failure = False
         try:
             self.spawn('git submodule init'.split())
             self.spawn('git submodule update --recursive'.split())
         except Exception as e:
             failure = e
             print(e)
         
         if not check_submodule_status(repo_root) == 'clean':
             print("submodules could not be checked out")
             sys.exit(1)
 
 
 def git_prebuild(pkg_dir, build_cmd=build_py):
     """Return extended build or sdist command class for recording commit
     
     records git commit in IPython.utils._sysinfo.commit
     
     for use in IPython.utils.sysinfo.sys_info() calls after installation.
     
     Also ensures that submodules exist prior to running
     """
     
     class MyBuildPy(build_cmd):
         ''' Subclass to write commit data into installation tree '''
         def run(self):
             build_cmd.run(self)
             # this one will only fire for build commands
             if hasattr(self, 'build_lib'):
                 self._record_commit(self.build_lib)
         
         def make_release_tree(self, base_dir, files):
             # this one will fire for sdist
             build_cmd.make_release_tree(self, base_dir, files)
             self._record_commit(base_dir)
         
         def _record_commit(self, base_dir):
             import subprocess
             proc = subprocess.Popen('git rev-parse --short HEAD',
                                     stdout=subprocess.PIPE,
                                     stderr=subprocess.PIPE,
                                     shell=True)
             repo_commit, _ = proc.communicate()
             repo_commit = repo_commit.strip().decode("ascii")
             
             out_pth = pjoin(base_dir, pkg_dir, 'utils', '_sysinfo.py')
             if os.path.isfile(out_pth) and not repo_commit:
                 # nothing to write, don't clobber
                 return
             
             print("writing git commit '%s' to %s" % (repo_commit, out_pth))
             
             # remove to avoid overwriting original via hard link
             try:
                 os.remove(out_pth)
             except (IOError, OSError):
                 pass
             with open(out_pth, 'w') as out_file:
                 out_file.writelines([
                     '# GENERATED BY setup.py\n',
                     'commit = "%s"\n' % repo_commit,
                 ])
     return require_submodules(MyBuildPy)
 
 
 def require_submodules(command):
     """decorator for instructing a command to check for submodules before running"""
     class DecoratedCommand(command):
         def run(self):
             if not check_submodule_status(repo_root) == 'clean':
                 print("submodules missing! Run `setup.py submodule` and try again")
                 sys.exit(1)
             command.run(self)
     return DecoratedCommand
 
 #---------------------------------------------------------------------------
 # bdist related
 #---------------------------------------------------------------------------
 
 def get_bdist_wheel():
     """Construct bdist_wheel command for building wheels
     
     Constructs py2-none-any tag, instead of py2.7-none-any
     """
     class RequiresWheel(Command):
         description = "Dummy command for missing bdist_wheel"
         user_options = []
 
         def initialize_options(self):
             pass
 
         def finalize_options(self):
             pass
 
         def run(self):
             print("bdist_wheel requires the wheel package")
             sys.exit(1)
 
     if 'setuptools' not in sys.modules:
         return RequiresWheel
     else:
         try:
             from wheel.bdist_wheel import bdist_wheel, read_pkg_info, write_pkg_info
         except ImportError:
             return RequiresWheel
         
         class bdist_wheel_tag(bdist_wheel):
 
             def add_requirements(self, metadata_path):
                 """transform platform-dependent requirements"""
                 pkg_info = read_pkg_info(metadata_path)
                 # pkg_info is an email.Message object (?!)
                 # we have to remove the unconditional 'readline' and/or 'pyreadline' entries
                 # and transform them to conditionals
                 requires = pkg_info.get_all('Requires-Dist')
                 del pkg_info['Requires-Dist']
                 def _remove_startswith(lis, prefix):
                     """like list.remove, but with startswith instead of =="""
                     found = False
                     for idx, item in enumerate(lis):
                         if item.startswith(prefix):
                             found = True
                             break
                     if found:
                         lis.pop(idx)
                 
                 for pkg in ("gnureadline", "pyreadline", "mock"):
                     _remove_startswith(requires, pkg)
                 requires.append("gnureadline; sys.platform == 'darwin' and platform.python_implementation == 'CPython'")
                 requires.append("pyreadline (>=2.0); extra == 'terminal' and sys.platform == 'win32' and platform.python_implementation == 'CPython'")
                 requires.append("pyreadline (>=2.0); extra == 'all' and sys.platform == 'win32' and platform.python_implementation == 'CPython'")
                 requires.append("mock; extra == 'test' and python_version < '3.3'")
                 for r in requires:
                     pkg_info['Requires-Dist'] = r
                 write_pkg_info(metadata_path, pkg_info)
         
         return bdist_wheel_tag
 
 #---------------------------------------------------------------------------
 # Notebook related
 #---------------------------------------------------------------------------
 
 class CompileCSS(Command):
     """Recompile Notebook CSS
     
     Regenerate the compiled CSS from LESS sources.
     
     Requires various dev dependencies, such as fabric and lessc.
     """
     description = "Recompile Notebook CSS"
     user_options = [
         ('minify', 'x', "minify CSS"),
         ('force', 'f', "force recompilation of CSS"),
     ]
     
     def initialize_options(self):
         self.minify = False
         self.force = False
     
     def finalize_options(self):
         self.minify = bool(self.minify)
         self.force = bool(self.force)
     
     def run(self):
         check_call([
                 "fab",
                 "css:minify=%s,force=%s" % (self.minify, self.force),
             ], cwd=pjoin(repo_root, "IPython", "html"),
         )
 
 
 class JavascriptVersion(Command):
     """write the javascript version to notebook javascript"""
     description = "Write IPython version to javascript"
     user_options = []
     
     def initialize_options(self):
         pass
     
     def finalize_options(self):
         pass
     
     def run(self):
         nsfile = pjoin(repo_root, "IPython", "html", "static", "base", "js", "namespace.js")
         with open(nsfile) as f:
             lines = f.readlines()
         with open(nsfile, 'w') as f:
             for line in lines:
                 if line.startswith("IPython.version"):
                     line = 'IPython.version = "{0}";\n'.format(version)
                 f.write(line)
 
 
 def css_js_prerelease(command, strict=True):
     """decorator for building js/minified css prior to a release"""
     class DecoratedCommand(command):
         def run(self):
             self.distribution.run_command('jsversion')
             css = self.distribution.get_command_obj('css')
             css.minify = True
             try:
                 self.distribution.run_command('css')
             except Exception as e:
                 if strict:
                     raise
                 else:
                     log.warn("Failed to build css sourcemaps: %s" % e)
             command.run(self)
     return DecoratedCommand