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restore "unsaved changes" warning on unload...
restore "unsaved changes" warning on unload Autosave is triggered at this event, but it seems to fail sometimes (perhaps when it's too slow?). closes #3475

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notebook.js
2014 lines | 68.0 KiB | application/javascript | JavascriptLexer
//----------------------------------------------------------------------------
// Copyright (C) 2008-2011 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.
//----------------------------------------------------------------------------
//============================================================================
// Notebook
//============================================================================
var IPython = (function (IPython) {
var utils = IPython.utils;
var key = IPython.utils.keycodes;
/**
* A notebook contains and manages cells.
*
* @class Notebook
* @constructor
* @param {String} selector A jQuery selector for the notebook's DOM element
* @param {Object} [options] A config object
*/
var Notebook = function (selector, options) {
var options = options || {};
this._baseProjectUrl = options.baseProjectUrl;
this.read_only = options.read_only || IPython.read_only;
this.element = $(selector);
this.element.scroll();
this.element.data("notebook", this);
this.next_prompt_number = 1;
this.kernel = null;
this.clipboard = null;
this.undelete_backup = null;
this.undelete_index = null;
this.undelete_below = false;
this.paste_enabled = false;
this.set_dirty(false);
this.metadata = {};
this._checkpoint_after_save = false;
this.last_checkpoint = null;
this.autosave_interval = 0;
this.autosave_timer = null;
// autosave *at most* every two minutes
this.minimum_autosave_interval = 120000;
// single worksheet for now
this.worksheet_metadata = {};
this.control_key_active = false;
this.notebook_id = null;
this.notebook_name = null;
this.notebook_name_blacklist_re = /[\/\\:]/;
this.nbformat = 3 // Increment this when changing the nbformat
this.nbformat_minor = 0 // Increment this when changing the nbformat
this.style();
this.create_elements();
this.bind_events();
};
/**
* Tweak the notebook's CSS style.
*
* @method style
*/
Notebook.prototype.style = function () {
$('div#notebook').addClass('border-box-sizing');
};
/**
* Get the root URL of the notebook server.
*
* @method baseProjectUrl
* @return {String} The base project URL
*/
Notebook.prototype.baseProjectUrl = function(){
return this._baseProjectUrl || $('body').data('baseProjectUrl');
};
/**
* Create an HTML and CSS representation of the notebook.
*
* @method create_elements
*/
Notebook.prototype.create_elements = function () {
// We add this end_space div to the end of the notebook div to:
// i) provide a margin between the last cell and the end of the notebook
// ii) to prevent the div from scrolling up when the last cell is being
// edited, but is too low on the page, which browsers will do automatically.
var that = this;
this.container = $("<div/>").addClass("container").attr("id", "notebook-container");
var end_space = $('<div/>').addClass('end_space');
end_space.dblclick(function (e) {
if (that.read_only) return;
var ncells = that.ncells();
that.insert_cell_below('code',ncells-1);
});
this.element.append(this.container);
this.container.append(end_space);
$('div#notebook').addClass('border-box-sizing');
};
/**
* Bind JavaScript events: key presses and custom IPython events.
*
* @method bind_events
*/
Notebook.prototype.bind_events = function () {
var that = this;
$([IPython.events]).on('set_next_input.Notebook', function (event, data) {
var index = that.find_cell_index(data.cell);
var new_cell = that.insert_cell_below('code',index);
new_cell.set_text(data.text);
that.dirty = true;
});
$([IPython.events]).on('set_dirty.Notebook', function (event, data) {
that.dirty = data.value;
});
$([IPython.events]).on('select.Cell', function (event, data) {
var index = that.find_cell_index(data.cell);
that.select(index);
});
$(document).keydown(function (event) {
// console.log(event);
if (that.read_only) return true;
// Save (CTRL+S) or (AppleKey+S)
//metaKey = applekey on mac
if ((event.ctrlKey || event.metaKey) && event.keyCode==83) {
that.save_checkpoint();
event.preventDefault();
return false;
} else if (event.which === key.ESC) {
// Intercept escape at highest level to avoid closing
// websocket connection with firefox
IPython.pager.collapse();
event.preventDefault();
} else if (event.which === key.SHIFT) {
// ignore shift keydown
return true;
}
if (event.which === key.UPARROW && !event.shiftKey) {
var cell = that.get_selected_cell();
if (cell && cell.at_top()) {
event.preventDefault();
that.select_prev();
};
} else if (event.which === key.DOWNARROW && !event.shiftKey) {
var cell = that.get_selected_cell();
if (cell && cell.at_bottom()) {
event.preventDefault();
that.select_next();
};
} else if (event.which === key.ENTER && event.shiftKey) {
that.execute_selected_cell();
return false;
} else if (event.which === key.ENTER && event.altKey) {
// Execute code cell, and insert new in place
that.execute_selected_cell();
// Only insert a new cell, if we ended up in an already populated cell
if (/\S/.test(that.get_selected_cell().get_text()) == true) {
that.insert_cell_above('code');
}
return false;
} else if (event.which === key.ENTER && event.ctrlKey) {
that.execute_selected_cell({terminal:true});
return false;
} else if (event.which === 77 && event.ctrlKey && that.control_key_active == false) {
that.control_key_active = true;
return false;
} else if (event.which === 88 && that.control_key_active) {
// Cut selected cell = x
that.cut_cell();
that.control_key_active = false;
return false;
} else if (event.which === 67 && that.control_key_active) {
// Copy selected cell = c
that.copy_cell();
that.control_key_active = false;
return false;
} else if (event.which === 86 && that.control_key_active) {
// Paste below selected cell = v
that.paste_cell_below();
that.control_key_active = false;
return false;
} else if (event.which === 68 && that.control_key_active) {
// Delete selected cell = d
that.delete_cell();
that.control_key_active = false;
return false;
} else if (event.which === 65 && that.control_key_active) {
// Insert code cell above selected = a
that.insert_cell_above('code');
that.control_key_active = false;
return false;
} else if (event.which === 66 && that.control_key_active) {
// Insert code cell below selected = b
that.insert_cell_below('code');
that.control_key_active = false;
return false;
} else if (event.which === 89 && that.control_key_active) {
// To code = y
that.to_code();
that.control_key_active = false;
return false;
} else if (event.which === 77 && that.control_key_active) {
// To markdown = m
that.to_markdown();
that.control_key_active = false;
return false;
} else if (event.which === 84 && that.control_key_active) {
// To Raw = t
that.to_raw();
that.control_key_active = false;
return false;
} else if (event.which === 49 && that.control_key_active) {
// To Heading 1 = 1
that.to_heading(undefined, 1);
that.control_key_active = false;
return false;
} else if (event.which === 50 && that.control_key_active) {
// To Heading 2 = 2
that.to_heading(undefined, 2);
that.control_key_active = false;
return false;
} else if (event.which === 51 && that.control_key_active) {
// To Heading 3 = 3
that.to_heading(undefined, 3);
that.control_key_active = false;
return false;
} else if (event.which === 52 && that.control_key_active) {
// To Heading 4 = 4
that.to_heading(undefined, 4);
that.control_key_active = false;
return false;
} else if (event.which === 53 && that.control_key_active) {
// To Heading 5 = 5
that.to_heading(undefined, 5);
that.control_key_active = false;
return false;
} else if (event.which === 54 && that.control_key_active) {
// To Heading 6 = 6
that.to_heading(undefined, 6);
that.control_key_active = false;
return false;
} else if (event.which === 79 && that.control_key_active) {
// Toggle output = o
if (event.shiftKey){
that.toggle_output_scroll();
} else {
that.toggle_output();
}
that.control_key_active = false;
return false;
} else if (event.which === 83 && that.control_key_active) {
// Save notebook = s
that.save_checkpoint();
that.control_key_active = false;
return false;
} else if (event.which === 74 && that.control_key_active) {
// Move cell down = j
that.move_cell_down();
that.control_key_active = false;
return false;
} else if (event.which === 75 && that.control_key_active) {
// Move cell up = k
that.move_cell_up();
that.control_key_active = false;
return false;
} else if (event.which === 80 && that.control_key_active) {
// Select previous = p
that.select_prev();
that.control_key_active = false;
return false;
} else if (event.which === 78 && that.control_key_active) {
// Select next = n
that.select_next();
that.control_key_active = false;
return false;
} else if (event.which === 76 && that.control_key_active) {
// Toggle line numbers = l
that.cell_toggle_line_numbers();
that.control_key_active = false;
return false;
} else if (event.which === 73 && that.control_key_active) {
// Interrupt kernel = i
that.kernel.interrupt();
that.control_key_active = false;
return false;
} else if (event.which === 190 && that.control_key_active) {
// Restart kernel = . # matches qt console
that.restart_kernel();
that.control_key_active = false;
return false;
} else if (event.which === 72 && that.control_key_active) {
// Show keyboard shortcuts = h
IPython.quick_help.show_keyboard_shortcuts();
that.control_key_active = false;
return false;
} else if (event.which === 90 && that.control_key_active) {
// Undo last cell delete = z
that.undelete();
that.control_key_active = false;
return false;
} else if (that.control_key_active) {
that.control_key_active = false;
return true;
}
return true;
});
var collapse_time = function(time){
var app_height = $('#ipython-main-app').height(); // content height
var splitter_height = $('div#pager_splitter').outerHeight(true);
var new_height = app_height - splitter_height;
that.element.animate({height : new_height + 'px'}, time);
}
this.element.bind('collapse_pager', function (event,extrap) {
var time = (extrap != undefined) ? ((extrap.duration != undefined ) ? extrap.duration : 'fast') : 'fast';
collapse_time(time);
});
var expand_time = function(time) {
var app_height = $('#ipython-main-app').height(); // content height
var splitter_height = $('div#pager_splitter').outerHeight(true);
var pager_height = $('div#pager').outerHeight(true);
var new_height = app_height - pager_height - splitter_height;
that.element.animate({height : new_height + 'px'}, time);
}
this.element.bind('expand_pager', function (event, extrap) {
var time = (extrap != undefined) ? ((extrap.duration != undefined ) ? extrap.duration : 'fast') : 'fast';
expand_time(time);
});
$(window).bind('beforeunload', function () {
// TODO: Make killing the kernel configurable.
var kill_kernel = false;
if (kill_kernel) {
that.kernel.kill();
}
// if we are autosaving, trigger an autosave on nav-away.
// still warn, because if we don't the autosave may fail.
if (that.dirty && ! that.read_only) {
if ( that.autosave_interval ) {
setTimeout(function() { that.save_notebook(); }, 0);
}
return "Unsaved changes will be lost.";
};
// Null is the *only* return value that will make the browser not
// pop up the "don't leave" dialog.
return null;
});
};
/**
* Set the dirty flag, and trigger the set_dirty.Notebook event
*
* @method set_dirty
*/
Notebook.prototype.set_dirty = function (value) {
if (value === undefined) {
value = true;
}
if (this.dirty == value) {
return;
}
$([IPython.events]).trigger('set_dirty.Notebook', {value: value});
};
/**
* Scroll the top of the page to a given cell.
*
* @method scroll_to_cell
* @param {Number} cell_number An index of the cell to view
* @param {Number} time Animation time in milliseconds
* @return {Number} Pixel offset from the top of the container
*/
Notebook.prototype.scroll_to_cell = function (cell_number, time) {
var cells = this.get_cells();
var time = time || 0;
cell_number = Math.min(cells.length-1,cell_number);
cell_number = Math.max(0 ,cell_number);
var scroll_value = cells[cell_number].element.position().top-cells[0].element.position().top ;
this.element.animate({scrollTop:scroll_value}, time);
return scroll_value;
};
/**
* Scroll to the bottom of the page.
*
* @method scroll_to_bottom
*/
Notebook.prototype.scroll_to_bottom = function () {
this.element.animate({scrollTop:this.element.get(0).scrollHeight}, 0);
};
/**
* Scroll to the top of the page.
*
* @method scroll_to_top
*/
Notebook.prototype.scroll_to_top = function () {
this.element.animate({scrollTop:0}, 0);
};
// Cell indexing, retrieval, etc.
/**
* Get all cell elements in the notebook.
*
* @method get_cell_elements
* @return {jQuery} A selector of all cell elements
*/
Notebook.prototype.get_cell_elements = function () {
return this.container.children("div.cell");
};
/**
* Get a particular cell element.
*
* @method get_cell_element
* @param {Number} index An index of a cell to select
* @return {jQuery} A selector of the given cell.
*/
Notebook.prototype.get_cell_element = function (index) {
var result = null;
var e = this.get_cell_elements().eq(index);
if (e.length !== 0) {
result = e;
}
return result;
};
/**
* Count the cells in this notebook.
*
* @method ncells
* @return {Number} The number of cells in this notebook
*/
Notebook.prototype.ncells = function () {
return this.get_cell_elements().length;
};
/**
* Get all Cell objects in this notebook.
*
* @method get_cells
* @return {Array} This notebook's Cell objects
*/
// TODO: we are often calling cells as cells()[i], which we should optimize
// to cells(i) or a new method.
Notebook.prototype.get_cells = function () {
return this.get_cell_elements().toArray().map(function (e) {
return $(e).data("cell");
});
};
/**
* Get a Cell object from this notebook.
*
* @method get_cell
* @param {Number} index An index of a cell to retrieve
* @return {Cell} A particular cell
*/
Notebook.prototype.get_cell = function (index) {
var result = null;
var ce = this.get_cell_element(index);
if (ce !== null) {
result = ce.data('cell');
}
return result;
}
/**
* Get the cell below a given cell.
*
* @method get_next_cell
* @param {Cell} cell The provided cell
* @return {Cell} The next cell
*/
Notebook.prototype.get_next_cell = function (cell) {
var result = null;
var index = this.find_cell_index(cell);
if (this.is_valid_cell_index(index+1)) {
result = this.get_cell(index+1);
}
return result;
}
/**
* Get the cell above a given cell.
*
* @method get_prev_cell
* @param {Cell} cell The provided cell
* @return {Cell} The previous cell
*/
Notebook.prototype.get_prev_cell = function (cell) {
// TODO: off-by-one
// nb.get_prev_cell(nb.get_cell(1)) is null
var result = null;
var index = this.find_cell_index(cell);
if (index !== null && index > 1) {
result = this.get_cell(index-1);
}
return result;
}
/**
* Get the numeric index of a given cell.
*
* @method find_cell_index
* @param {Cell} cell The provided cell
* @return {Number} The cell's numeric index
*/
Notebook.prototype.find_cell_index = function (cell) {
var result = null;
this.get_cell_elements().filter(function (index) {
if ($(this).data("cell") === cell) {
result = index;
};
});
return result;
};
/**
* Get a given index , or the selected index if none is provided.
*
* @method index_or_selected
* @param {Number} index A cell's index
* @return {Number} The given index, or selected index if none is provided.
*/
Notebook.prototype.index_or_selected = function (index) {
var i;
if (index === undefined || index === null) {
i = this.get_selected_index();
if (i === null) {
i = 0;
}
} else {
i = index;
}
return i;
};
/**
* Get the currently selected cell.
* @method get_selected_cell
* @return {Cell} The selected cell
*/
Notebook.prototype.get_selected_cell = function () {
var index = this.get_selected_index();
return this.get_cell(index);
};
/**
* Check whether a cell index is valid.
*
* @method is_valid_cell_index
* @param {Number} index A cell index
* @return True if the index is valid, false otherwise
*/
Notebook.prototype.is_valid_cell_index = function (index) {
if (index !== null && index >= 0 && index < this.ncells()) {
return true;
} else {
return false;
};
}
/**
* Get the index of the currently selected cell.
* @method get_selected_index
* @return {Number} The selected cell's numeric index
*/
Notebook.prototype.get_selected_index = function () {
var result = null;
this.get_cell_elements().filter(function (index) {
if ($(this).data("cell").selected === true) {
result = index;
};
});
return result;
};
// Cell selection.
/**
* Programmatically select a cell.
*
* @method select
* @param {Number} index A cell's index
* @return {Notebook} This notebook
*/
Notebook.prototype.select = function (index) {
if (this.is_valid_cell_index(index)) {
var sindex = this.get_selected_index()
if (sindex !== null && index !== sindex) {
this.get_cell(sindex).unselect();
};
var cell = this.get_cell(index);
cell.select();
if (cell.cell_type === 'heading') {
$([IPython.events]).trigger('selected_cell_type_changed.Notebook',
{'cell_type':cell.cell_type,level:cell.level}
);
} else {
$([IPython.events]).trigger('selected_cell_type_changed.Notebook',
{'cell_type':cell.cell_type}
);
};
};
return this;
};
/**
* Programmatically select the next cell.
*
* @method select_next
* @return {Notebook} This notebook
*/
Notebook.prototype.select_next = function () {
var index = this.get_selected_index();
this.select(index+1);
return this;
};
/**
* Programmatically select the previous cell.
*
* @method select_prev
* @return {Notebook} This notebook
*/
Notebook.prototype.select_prev = function () {
var index = this.get_selected_index();
this.select(index-1);
return this;
};
// Cell movement
/**
* Move given (or selected) cell up and select it.
*
* @method move_cell_up
* @param [index] {integer} cell index
* @return {Notebook} This notebook
**/
Notebook.prototype.move_cell_up = function (index) {
var i = this.index_or_selected(index);
if (this.is_valid_cell_index(i) && i > 0) {
var pivot = this.get_cell_element(i-1);
var tomove = this.get_cell_element(i);
if (pivot !== null && tomove !== null) {
tomove.detach();
pivot.before(tomove);
this.select(i-1);
};
this.set_dirty(true);
};
return this;
};
/**
* Move given (or selected) cell down and select it
*
* @method move_cell_down
* @param [index] {integer} cell index
* @return {Notebook} This notebook
**/
Notebook.prototype.move_cell_down = function (index) {
var i = this.index_or_selected(index);
if ( this.is_valid_cell_index(i) && this.is_valid_cell_index(i+1)) {
var pivot = this.get_cell_element(i+1);
var tomove = this.get_cell_element(i);
if (pivot !== null && tomove !== null) {
tomove.detach();
pivot.after(tomove);
this.select(i+1);
};
};
this.set_dirty();
return this;
};
// Insertion, deletion.
/**
* Delete a cell from the notebook.
*
* @method delete_cell
* @param [index] A cell's numeric index
* @return {Notebook} This notebook
*/
Notebook.prototype.delete_cell = function (index) {
var i = this.index_or_selected(index);
var cell = this.get_selected_cell();
this.undelete_backup = cell.toJSON();
$('#undelete_cell').removeClass('ui-state-disabled');
if (this.is_valid_cell_index(i)) {
var ce = this.get_cell_element(i);
ce.remove();
if (i === (this.ncells())) {
this.select(i-1);
this.undelete_index = i - 1;
this.undelete_below = true;
} else {
this.select(i);
this.undelete_index = i;
this.undelete_below = false;
};
this.set_dirty(true);
};
return this;
};
/**
* Insert a cell so that after insertion the cell is at given index.
*
* Similar to insert_above, but index parameter is mandatory
*
* Index will be brought back into the accissible range [0,n]
*
* @method insert_cell_at_index
* @param type {string} in ['code','markdown','heading']
* @param [index] {int} a valid index where to inser cell
*
* @return cell {cell|null} created cell or null
**/
Notebook.prototype.insert_cell_at_index = function(type, index){
var ncells = this.ncells();
var index = Math.min(index,ncells);
index = Math.max(index,0);
var cell = null;
if (ncells === 0 || this.is_valid_cell_index(index) || index === ncells) {
if (type === 'code') {
cell = new IPython.CodeCell(this.kernel);
cell.set_input_prompt();
} else if (type === 'markdown') {
cell = new IPython.MarkdownCell();
} else if (type === 'raw') {
cell = new IPython.RawCell();
} else if (type === 'heading') {
cell = new IPython.HeadingCell();
}
if(this._insert_element_at_index(cell.element,index)){
cell.render();
this.select(this.find_cell_index(cell));
this.set_dirty(true);
}
}
return cell;
};
/**
* Insert an element at given cell index.
*
* @method _insert_element_at_index
* @param element {dom element} a cell element
* @param [index] {int} a valid index where to inser cell
* @private
*
* return true if everything whent fine.
**/
Notebook.prototype._insert_element_at_index = function(element, index){
if (element === undefined){
return false;
}
var ncells = this.ncells();
if (ncells === 0) {
// special case append if empty
this.element.find('div.end_space').before(element);
} else if ( ncells === index ) {
// special case append it the end, but not empty
this.get_cell_element(index-1).after(element);
} else if (this.is_valid_cell_index(index)) {
// otherwise always somewhere to append to
this.get_cell_element(index).before(element);
} else {
return false;
}
if (this.undelete_index !== null && index <= this.undelete_index) {
this.undelete_index = this.undelete_index + 1;
this.set_dirty(true);
}
return true;
};
/**
* Insert a cell of given type above given index, or at top
* of notebook if index smaller than 0.
*
* default index value is the one of currently selected cell
*
* @method insert_cell_above
* @param type {string} cell type
* @param [index] {integer}
*
* @return handle to created cell or null
**/
Notebook.prototype.insert_cell_above = function (type, index) {
index = this.index_or_selected(index);
return this.insert_cell_at_index(type, index);
};
/**
* Insert a cell of given type below given index, or at bottom
* of notebook if index greater thatn number of cell
*
* default index value is the one of currently selected cell
*
* @method insert_cell_below
* @param type {string} cell type
* @param [index] {integer}
*
* @return handle to created cell or null
*
**/
Notebook.prototype.insert_cell_below = function (type, index) {
index = this.index_or_selected(index);
return this.insert_cell_at_index(type, index+1);
};
/**
* Insert cell at end of notebook
*
* @method insert_cell_at_bottom
* @param {String} type cell type
*
* @return the added cell; or null
**/
Notebook.prototype.insert_cell_at_bottom = function (type){
var len = this.ncells();
return this.insert_cell_below(type,len-1);
};
/**
* Turn a cell into a code cell.
*
* @method to_code
* @param {Number} [index] A cell's index
*/
Notebook.prototype.to_code = function (index) {
var i = this.index_or_selected(index);
if (this.is_valid_cell_index(i)) {
var source_element = this.get_cell_element(i);
var source_cell = source_element.data("cell");
if (!(source_cell instanceof IPython.CodeCell)) {
var target_cell = this.insert_cell_below('code',i);
var text = source_cell.get_text();
if (text === source_cell.placeholder) {
text = '';
}
target_cell.set_text(text);
// make this value the starting point, so that we can only undo
// to this state, instead of a blank cell
target_cell.code_mirror.clearHistory();
source_element.remove();
this.set_dirty(true);
};
};
};
/**
* Turn a cell into a Markdown cell.
*
* @method to_markdown
* @param {Number} [index] A cell's index
*/
Notebook.prototype.to_markdown = function (index) {
var i = this.index_or_selected(index);
if (this.is_valid_cell_index(i)) {
var source_element = this.get_cell_element(i);
var source_cell = source_element.data("cell");
if (!(source_cell instanceof IPython.MarkdownCell)) {
var target_cell = this.insert_cell_below('markdown',i);
var text = source_cell.get_text();
if (text === source_cell.placeholder) {
text = '';
};
// The edit must come before the set_text.
target_cell.edit();
target_cell.set_text(text);
// make this value the starting point, so that we can only undo
// to this state, instead of a blank cell
target_cell.code_mirror.clearHistory();
source_element.remove();
this.set_dirty(true);
};
};
};
/**
* Turn a cell into a raw text cell.
*
* @method to_raw
* @param {Number} [index] A cell's index
*/
Notebook.prototype.to_raw = function (index) {
var i = this.index_or_selected(index);
if (this.is_valid_cell_index(i)) {
var source_element = this.get_cell_element(i);
var source_cell = source_element.data("cell");
var target_cell = null;
if (!(source_cell instanceof IPython.RawCell)) {
target_cell = this.insert_cell_below('raw',i);
var text = source_cell.get_text();
if (text === source_cell.placeholder) {
text = '';
};
// The edit must come before the set_text.
target_cell.edit();
target_cell.set_text(text);
// make this value the starting point, so that we can only undo
// to this state, instead of a blank cell
target_cell.code_mirror.clearHistory();
source_element.remove();
this.set_dirty(true);
};
};
};
/**
* Turn a cell into a heading cell.
*
* @method to_heading
* @param {Number} [index] A cell's index
* @param {Number} [level] A heading level (e.g., 1 becomes &lt;h1&gt;)
*/
Notebook.prototype.to_heading = function (index, level) {
level = level || 1;
var i = this.index_or_selected(index);
if (this.is_valid_cell_index(i)) {
var source_element = this.get_cell_element(i);
var source_cell = source_element.data("cell");
var target_cell = null;
if (source_cell instanceof IPython.HeadingCell) {
source_cell.set_level(level);
} else {
target_cell = this.insert_cell_below('heading',i);
var text = source_cell.get_text();
if (text === source_cell.placeholder) {
text = '';
};
// The edit must come before the set_text.
target_cell.set_level(level);
target_cell.edit();
target_cell.set_text(text);
// make this value the starting point, so that we can only undo
// to this state, instead of a blank cell
target_cell.code_mirror.clearHistory();
source_element.remove();
this.set_dirty(true);
};
$([IPython.events]).trigger('selected_cell_type_changed.Notebook',
{'cell_type':'heading',level:level}
);
};
};
// Cut/Copy/Paste
/**
* Enable UI elements for pasting cells.
*
* @method enable_paste
*/
Notebook.prototype.enable_paste = function () {
var that = this;
if (!this.paste_enabled) {
$('#paste_cell_replace').removeClass('ui-state-disabled')
.on('click', function () {that.paste_cell_replace();});
$('#paste_cell_above').removeClass('ui-state-disabled')
.on('click', function () {that.paste_cell_above();});
$('#paste_cell_below').removeClass('ui-state-disabled')
.on('click', function () {that.paste_cell_below();});
this.paste_enabled = true;
};
};
/**
* Disable UI elements for pasting cells.
*
* @method disable_paste
*/
Notebook.prototype.disable_paste = function () {
if (this.paste_enabled) {
$('#paste_cell_replace').addClass('ui-state-disabled').off('click');
$('#paste_cell_above').addClass('ui-state-disabled').off('click');
$('#paste_cell_below').addClass('ui-state-disabled').off('click');
this.paste_enabled = false;
};
};
/**
* Cut a cell.
*
* @method cut_cell
*/
Notebook.prototype.cut_cell = function () {
this.copy_cell();
this.delete_cell();
}
/**
* Copy a cell.
*
* @method copy_cell
*/
Notebook.prototype.copy_cell = function () {
var cell = this.get_selected_cell();
this.clipboard = cell.toJSON();
this.enable_paste();
};
/**
* Replace the selected cell with a cell in the clipboard.
*
* @method paste_cell_replace
*/
Notebook.prototype.paste_cell_replace = function () {
if (this.clipboard !== null && this.paste_enabled) {
var cell_data = this.clipboard;
var new_cell = this.insert_cell_above(cell_data.cell_type);
new_cell.fromJSON(cell_data);
var old_cell = this.get_next_cell(new_cell);
this.delete_cell(this.find_cell_index(old_cell));
this.select(this.find_cell_index(new_cell));
};
};
/**
* Paste a cell from the clipboard above the selected cell.
*
* @method paste_cell_above
*/
Notebook.prototype.paste_cell_above = function () {
if (this.clipboard !== null && this.paste_enabled) {
var cell_data = this.clipboard;
var new_cell = this.insert_cell_above(cell_data.cell_type);
new_cell.fromJSON(cell_data);
};
};
/**
* Paste a cell from the clipboard below the selected cell.
*
* @method paste_cell_below
*/
Notebook.prototype.paste_cell_below = function () {
if (this.clipboard !== null && this.paste_enabled) {
var cell_data = this.clipboard;
var new_cell = this.insert_cell_below(cell_data.cell_type);
new_cell.fromJSON(cell_data);
};
};
// Cell undelete
/**
* Restore the most recently deleted cell.
*
* @method undelete
*/
Notebook.prototype.undelete = function() {
if (this.undelete_backup !== null && this.undelete_index !== null) {
var current_index = this.get_selected_index();
if (this.undelete_index < current_index) {
current_index = current_index + 1;
}
if (this.undelete_index >= this.ncells()) {
this.select(this.ncells() - 1);
}
else {
this.select(this.undelete_index);
}
var cell_data = this.undelete_backup;
var new_cell = null;
if (this.undelete_below) {
new_cell = this.insert_cell_below(cell_data.cell_type);
} else {
new_cell = this.insert_cell_above(cell_data.cell_type);
}
new_cell.fromJSON(cell_data);
this.select(current_index);
this.undelete_backup = null;
this.undelete_index = null;
}
$('#undelete_cell').addClass('ui-state-disabled');
}
// Split/merge
/**
* Split the selected cell into two, at the cursor.
*
* @method split_cell
*/
Notebook.prototype.split_cell = function () {
// Todo: implement spliting for other cell types.
var cell = this.get_selected_cell();
if (cell.is_splittable()) {
var texta = cell.get_pre_cursor();
var textb = cell.get_post_cursor();
if (cell instanceof IPython.CodeCell) {
cell.set_text(texta);
var new_cell = this.insert_cell_below('code');
new_cell.set_text(textb);
} else if (cell instanceof IPython.MarkdownCell) {
cell.set_text(texta);
cell.render();
var new_cell = this.insert_cell_below('markdown');
new_cell.edit(); // editor must be visible to call set_text
new_cell.set_text(textb);
new_cell.render();
}
};
};
/**
* Combine the selected cell into the cell above it.
*
* @method merge_cell_above
*/
Notebook.prototype.merge_cell_above = function () {
var index = this.get_selected_index();
var cell = this.get_cell(index);
if (index > 0) {
var upper_cell = this.get_cell(index-1);
var upper_text = upper_cell.get_text();
var text = cell.get_text();
if (cell instanceof IPython.CodeCell) {
cell.set_text(upper_text+'\n'+text);
} else if (cell instanceof IPython.MarkdownCell) {
cell.edit();
cell.set_text(upper_text+'\n'+text);
cell.render();
};
this.delete_cell(index-1);
this.select(this.find_cell_index(cell));
};
};
/**
* Combine the selected cell into the cell below it.
*
* @method merge_cell_below
*/
Notebook.prototype.merge_cell_below = function () {
var index = this.get_selected_index();
var cell = this.get_cell(index);
if (index < this.ncells()-1) {
var lower_cell = this.get_cell(index+1);
var lower_text = lower_cell.get_text();
var text = cell.get_text();
if (cell instanceof IPython.CodeCell) {
cell.set_text(text+'\n'+lower_text);
} else if (cell instanceof IPython.MarkdownCell) {
cell.edit();
cell.set_text(text+'\n'+lower_text);
cell.render();
};
this.delete_cell(index+1);
this.select(this.find_cell_index(cell));
};
};
// Cell collapsing and output clearing
/**
* Hide a cell's output.
*
* @method collapse
* @param {Number} index A cell's numeric index
*/
Notebook.prototype.collapse = function (index) {
var i = this.index_or_selected(index);
this.get_cell(i).collapse();
this.set_dirty(true);
};
/**
* Show a cell's output.
*
* @method expand
* @param {Number} index A cell's numeric index
*/
Notebook.prototype.expand = function (index) {
var i = this.index_or_selected(index);
this.get_cell(i).expand();
this.set_dirty(true);
};
/** Toggle whether a cell's output is collapsed or expanded.
*
* @method toggle_output
* @param {Number} index A cell's numeric index
*/
Notebook.prototype.toggle_output = function (index) {
var i = this.index_or_selected(index);
this.get_cell(i).toggle_output();
this.set_dirty(true);
};
/**
* Toggle a scrollbar for long cell outputs.
*
* @method toggle_output_scroll
* @param {Number} index A cell's numeric index
*/
Notebook.prototype.toggle_output_scroll = function (index) {
var i = this.index_or_selected(index);
this.get_cell(i).toggle_output_scroll();
};
/**
* Hide each code cell's output area.
*
* @method collapse_all_output
*/
Notebook.prototype.collapse_all_output = function () {
var ncells = this.ncells();
var cells = this.get_cells();
for (var i=0; i<ncells; i++) {
if (cells[i] instanceof IPython.CodeCell) {
cells[i].output_area.collapse();
}
};
// this should not be set if the `collapse` key is removed from nbformat
this.set_dirty(true);
};
/**
* Expand each code cell's output area, and add a scrollbar for long output.
*
* @method scroll_all_output
*/
Notebook.prototype.scroll_all_output = function () {
var ncells = this.ncells();
var cells = this.get_cells();
for (var i=0; i<ncells; i++) {
if (cells[i] instanceof IPython.CodeCell) {
cells[i].output_area.expand();
cells[i].output_area.scroll_if_long();
}
};
// this should not be set if the `collapse` key is removed from nbformat
this.set_dirty(true);
};
/**
* Expand each code cell's output area, and remove scrollbars.
*
* @method expand_all_output
*/
Notebook.prototype.expand_all_output = function () {
var ncells = this.ncells();
var cells = this.get_cells();
for (var i=0; i<ncells; i++) {
if (cells[i] instanceof IPython.CodeCell) {
cells[i].output_area.expand();
cells[i].output_area.unscroll_area();
}
};
// this should not be set if the `collapse` key is removed from nbformat
this.set_dirty(true);
};
/**
* Clear each code cell's output area.
*
* @method clear_all_output
*/
Notebook.prototype.clear_all_output = function () {
var ncells = this.ncells();
var cells = this.get_cells();
for (var i=0; i<ncells; i++) {
if (cells[i] instanceof IPython.CodeCell) {
cells[i].clear_output(true,true,true);
// Make all In[] prompts blank, as well
// TODO: make this configurable (via checkbox?)
cells[i].set_input_prompt();
}
};
this.set_dirty(true);
};
// Other cell functions: line numbers, ...
/**
* Toggle line numbers in the selected cell's input area.
*
* @method cell_toggle_line_numbers
*/
Notebook.prototype.cell_toggle_line_numbers = function() {
this.get_selected_cell().toggle_line_numbers();
};
// Kernel related things
/**
* Start a new kernel and set it on each code cell.
*
* @method start_kernel
*/
Notebook.prototype.start_kernel = function () {
var base_url = $('body').data('baseKernelUrl') + "kernels";
this.kernel = new IPython.Kernel(base_url);
this.kernel.start(this.notebook_id);
// Now that the kernel has been created, tell the CodeCells about it.
var ncells = this.ncells();
for (var i=0; i<ncells; i++) {
var cell = this.get_cell(i);
if (cell instanceof IPython.CodeCell) {
cell.set_kernel(this.kernel)
};
};
};
/**
* Prompt the user to restart the IPython kernel.
*
* @method restart_kernel
*/
Notebook.prototype.restart_kernel = function () {
var that = this;
IPython.dialog.modal({
title : "Restart kernel or continue running?",
body : $("<p/>").html(
'Do you want to restart the current kernel? You will lose all variables defined in it.'
),
buttons : {
"Continue running" : {},
"Restart" : {
"class" : "btn-danger",
"click" : function() {
that.kernel.restart();
}
}
}
});
};
/**
* Run the selected cell.
*
* Execute or render cell outputs.
*
* @method execute_selected_cell
* @param {Object} options Customize post-execution behavior
*/
Notebook.prototype.execute_selected_cell = function (options) {
// add_new: should a new cell be added if we are at the end of the nb
// terminal: execute in terminal mode, which stays in the current cell
var default_options = {terminal: false, add_new: true};
$.extend(default_options, options);
var that = this;
var cell = that.get_selected_cell();
var cell_index = that.find_cell_index(cell);
if (cell instanceof IPython.CodeCell) {
cell.execute();
}
if (default_options.terminal) {
cell.select_all();
} else {
if ((cell_index === (that.ncells()-1)) && default_options.add_new) {
that.insert_cell_below('code');
// If we are adding a new cell at the end, scroll down to show it.
that.scroll_to_bottom();
} else {
that.select(cell_index+1);
};
};
this.set_dirty(true);
};
/**
* Execute all cells below the selected cell.
*
* @method execute_cells_below
*/
Notebook.prototype.execute_cells_below = function () {
this.execute_cell_range(this.get_selected_index(), this.ncells());
this.scroll_to_bottom();
};
/**
* Execute all cells above the selected cell.
*
* @method execute_cells_above
*/
Notebook.prototype.execute_cells_above = function () {
this.execute_cell_range(0, this.get_selected_index());
};
/**
* Execute all cells.
*
* @method execute_all_cells
*/
Notebook.prototype.execute_all_cells = function () {
this.execute_cell_range(0, this.ncells());
this.scroll_to_bottom();
};
/**
* Execute a contiguous range of cells.
*
* @method execute_cell_range
* @param {Number} start Index of the first cell to execute (inclusive)
* @param {Number} end Index of the last cell to execute (exclusive)
*/
Notebook.prototype.execute_cell_range = function (start, end) {
for (var i=start; i<end; i++) {
this.select(i);
this.execute_selected_cell({add_new:false});
};
};
// Persistance and loading
/**
* Getter method for this notebook's ID.
*
* @method get_notebook_id
* @return {String} This notebook's ID
*/
Notebook.prototype.get_notebook_id = function () {
return this.notebook_id;
};
/**
* Getter method for this notebook's name.
*
* @method get_notebook_name
* @return {String} This notebook's name
*/
Notebook.prototype.get_notebook_name = function () {
return this.notebook_name;
};
/**
* Setter method for this notebook's name.
*
* @method set_notebook_name
* @param {String} name A new name for this notebook
*/
Notebook.prototype.set_notebook_name = function (name) {
this.notebook_name = name;
};
/**
* Check that a notebook's name is valid.
*
* @method test_notebook_name
* @param {String} nbname A name for this notebook
* @return {Boolean} True if the name is valid, false if invalid
*/
Notebook.prototype.test_notebook_name = function (nbname) {
nbname = nbname || '';
if (this.notebook_name_blacklist_re.test(nbname) == false && nbname.length>0) {
return true;
} else {
return false;
};
};
/**
* Load a notebook from JSON (.ipynb).
*
* This currently handles one worksheet: others are deleted.
*
* @method fromJSON
* @param {Object} data JSON representation of a notebook
*/
Notebook.prototype.fromJSON = function (data) {
var ncells = this.ncells();
var i;
for (i=0; i<ncells; i++) {
// Always delete cell 0 as they get renumbered as they are deleted.
this.delete_cell(0);
};
// Save the metadata and name.
this.metadata = data.metadata;
this.notebook_name = data.metadata.name;
// Only handle 1 worksheet for now.
var worksheet = data.worksheets[0];
if (worksheet !== undefined) {
if (worksheet.metadata) {
this.worksheet_metadata = worksheet.metadata;
}
var new_cells = worksheet.cells;
ncells = new_cells.length;
var cell_data = null;
var new_cell = null;
for (i=0; i<ncells; i++) {
cell_data = new_cells[i];
// VERSIONHACK: plaintext -> raw
// handle never-released plaintext name for raw cells
if (cell_data.cell_type === 'plaintext'){
cell_data.cell_type = 'raw';
}
new_cell = this.insert_cell_below(cell_data.cell_type);
new_cell.fromJSON(cell_data);
};
};
if (data.worksheets.length > 1) {
IPython.dialog.modal({
title : "Multiple worksheets",
body : "This notebook has " + data.worksheets.length + " worksheets, " +
"but this version of IPython can only handle the first. " +
"If you save this notebook, worksheets after the first will be lost.",
buttons : {
OK : {
class : "btn-danger"
}
}
});
}
};
/**
* Dump this notebook into a JSON-friendly object.
*
* @method toJSON
* @return {Object} A JSON-friendly representation of this notebook.
*/
Notebook.prototype.toJSON = function () {
var cells = this.get_cells();
var ncells = cells.length;
var cell_array = new Array(ncells);
for (var i=0; i<ncells; i++) {
cell_array[i] = cells[i].toJSON();
};
var data = {
// Only handle 1 worksheet for now.
worksheets : [{
cells: cell_array,
metadata: this.worksheet_metadata
}],
metadata : this.metadata
};
return data;
};
/**
* Start an autosave timer, for periodically saving the notebook.
*
* @method set_autosave_interval
* @param {Integer} interval the autosave interval in milliseconds
*/
Notebook.prototype.set_autosave_interval = function (interval) {
var that = this;
// clear previous interval, so we don't get simultaneous timers
if (this.autosave_timer) {
clearInterval(this.autosave_timer);
}
this.autosave_interval = this.minimum_autosave_interval = interval;
if (interval) {
this.autosave_timer = setInterval(function() {
if (that.dirty) {
that.save_notebook();
}
}, interval);
$([IPython.events]).trigger("autosave_enabled.Notebook", interval);
} else {
this.autosave_timer = null;
$([IPython.events]).trigger("autosave_disabled.Notebook");
};
};
/**
* Save this notebook on the server.
*
* @method save_notebook
*/
Notebook.prototype.save_notebook = function () {
// We may want to move the name/id/nbformat logic inside toJSON?
var data = this.toJSON();
data.metadata.name = this.notebook_name;
data.nbformat = this.nbformat;
data.nbformat_minor = this.nbformat_minor;
// time the ajax call for autosave tuning purposes.
var start = new Date().getTime();
// We do the call with settings so we can set cache to false.
var settings = {
processData : false,
cache : false,
type : "PUT",
data : JSON.stringify(data),
headers : {'Content-Type': 'application/json'},
success : $.proxy(this.save_notebook_success, this, start),
error : $.proxy(this.save_notebook_error, this)
};
$([IPython.events]).trigger('notebook_saving.Notebook');
var url = this.baseProjectUrl() + 'notebooks/' + this.notebook_id;
$.ajax(url, settings);
};
/**
* Success callback for saving a notebook.
*
* @method save_notebook_success
* @param {Integer} start the time when the save request started
* @param {Object} data JSON representation of a notebook
* @param {String} status Description of response status
* @param {jqXHR} xhr jQuery Ajax object
*/
Notebook.prototype.save_notebook_success = function (start, data, status, xhr) {
this.set_dirty(false);
$([IPython.events]).trigger('notebook_saved.Notebook');
this._update_autosave_interval(start);
if (this._checkpoint_after_save) {
this.create_checkpoint();
this._checkpoint_after_save = false;
};
};
/**
* update the autosave interval based on how long the last save took
*
* @method _update_autosave_interval
* @param {Integer} timestamp when the save request started
*/
Notebook.prototype._update_autosave_interval = function (start) {
var duration = (new Date().getTime() - start);
if (this.autosave_interval) {
// new save interval: higher of 10x save duration or parameter (default 30 seconds)
var interval = Math.max(10 * duration, this.minimum_autosave_interval);
// round to 10 seconds, otherwise we will be setting a new interval too often
interval = 10000 * Math.round(interval / 10000);
// set new interval, if it's changed
if (interval != this.autosave_interval) {
this.set_autosave_interval(interval);
}
}
};
/**
* Failure callback for saving a notebook.
*
* @method save_notebook_error
* @param {jqXHR} xhr jQuery Ajax object
* @param {String} status Description of response status
* @param {String} error_msg HTTP error message
*/
Notebook.prototype.save_notebook_error = function (xhr, status, error_msg) {
$([IPython.events]).trigger('notebook_save_failed.Notebook');
};
/**
* Request a notebook's data from the server.
*
* @method load_notebook
* @param {String} notebook_id A notebook to load
*/
Notebook.prototype.load_notebook = function (notebook_id) {
var that = this;
this.notebook_id = notebook_id;
// We do the call with settings so we can set cache to false.
var settings = {
processData : false,
cache : false,
type : "GET",
dataType : "json",
success : $.proxy(this.load_notebook_success,this),
error : $.proxy(this.load_notebook_error,this),
};
$([IPython.events]).trigger('notebook_loading.Notebook');
var url = this.baseProjectUrl() + 'notebooks/' + this.notebook_id;
$.ajax(url, settings);
};
/**
* Success callback for loading a notebook from the server.
*
* Load notebook data from the JSON response.
*
* @method load_notebook_success
* @param {Object} data JSON representation of a notebook
* @param {String} status Description of response status
* @param {jqXHR} xhr jQuery Ajax object
*/
Notebook.prototype.load_notebook_success = function (data, status, xhr) {
this.fromJSON(data);
if (this.ncells() === 0) {
this.insert_cell_below('code');
};
this.set_dirty(false);
this.select(0);
this.scroll_to_top();
if (data.orig_nbformat !== undefined && data.nbformat !== data.orig_nbformat) {
var msg = "This notebook has been converted from an older " +
"notebook format (v"+data.orig_nbformat+") to the current notebook " +
"format (v"+data.nbformat+"). The next time you save this notebook, the " +
"newer notebook format will be used and older versions of IPython " +
"may not be able to read it. To keep the older version, close the " +
"notebook without saving it.";
IPython.dialog.modal({
title : "Notebook converted",
body : msg,
buttons : {
OK : {
class : "btn-primary"
}
}
});
} else if (data.orig_nbformat_minor !== undefined && data.nbformat_minor !== data.orig_nbformat_minor) {
var that = this;
var orig_vs = 'v' + data.nbformat + '.' + data.orig_nbformat_minor;
var this_vs = 'v' + data.nbformat + '.' + this.nbformat_minor;
var msg = "This notebook is version " + orig_vs + ", but we only fully support up to " +
this_vs + ". You can still work with this notebook, but some features " +
"introduced in later notebook versions may not be available."
IPython.dialog.modal({
title : "Newer Notebook",
body : msg,
buttons : {
OK : {
class : "btn-danger"
}
}
});
}
// Create the kernel after the notebook is completely loaded to prevent
// code execution upon loading, which is a security risk.
if (! this.read_only) {
this.start_kernel();
// load our checkpoint list
IPython.notebook.list_checkpoints();
}
$([IPython.events]).trigger('notebook_loaded.Notebook');
};
/**
* Failure callback for loading a notebook from the server.
*
* @method load_notebook_error
* @param {jqXHR} xhr jQuery Ajax object
* @param {String} textStatus Description of response status
* @param {String} errorThrow HTTP error message
*/
Notebook.prototype.load_notebook_error = function (xhr, textStatus, errorThrow) {
if (xhr.status === 500) {
var msg = "An error occurred while loading this notebook. Most likely " +
"this notebook is in a newer format than is supported by this " +
"version of IPython. This version can load notebook formats " +
"v"+this.nbformat+" or earlier.";
IPython.dialog.modal({
title: "Error loading notebook",
body : msg,
buttons : {
"OK": {}
}
});
}
}
/********************* checkpoint-related *********************/
/**
* Save the notebook then immediately create a checkpoint.
*
* @method save_checkpoint
*/
Notebook.prototype.save_checkpoint = function () {
this._checkpoint_after_save = true;
this.save_notebook();
};
/**
* List checkpoints for this notebook.
*
* @method list_checkpoint
*/
Notebook.prototype.list_checkpoints = function () {
var url = this.baseProjectUrl() + 'notebooks/' + this.notebook_id + '/checkpoints';
$.get(url).done(
$.proxy(this.list_checkpoints_success, this)
).fail(
$.proxy(this.list_checkpoints_error, this)
);
};
/**
* Success callback for listing checkpoints.
*
* @method list_checkpoint_success
* @param {Object} data JSON representation of a checkpoint
* @param {String} status Description of response status
* @param {jqXHR} xhr jQuery Ajax object
*/
Notebook.prototype.list_checkpoints_success = function (data, status, xhr) {
var data = $.parseJSON(data);
if (data.length) {
this.last_checkpoint = data[0];
} else {
this.last_checkpoint = null;
}
$([IPython.events]).trigger('checkpoints_listed.Notebook', [data]);
};
/**
* Failure callback for listing a checkpoint.
*
* @method list_checkpoint_error
* @param {jqXHR} xhr jQuery Ajax object
* @param {String} status Description of response status
* @param {String} error_msg HTTP error message
*/
Notebook.prototype.list_checkpoints_error = function (xhr, status, error_msg) {
$([IPython.events]).trigger('list_checkpoints_failed.Notebook');
};
/**
* Create a checkpoint of this notebook on the server from the most recent save.
*
* @method create_checkpoint
*/
Notebook.prototype.create_checkpoint = function () {
var url = this.baseProjectUrl() + 'notebooks/' + this.notebook_id + '/checkpoints';
$.post(url).done(
$.proxy(this.create_checkpoint_success, this)
).fail(
$.proxy(this.create_checkpoint_error, this)
);
};
/**
* Success callback for creating a checkpoint.
*
* @method create_checkpoint_success
* @param {Object} data JSON representation of a checkpoint
* @param {String} status Description of response status
* @param {jqXHR} xhr jQuery Ajax object
*/
Notebook.prototype.create_checkpoint_success = function (data, status, xhr) {
var data = $.parseJSON(data);
this.last_checkpoint = data;
$([IPython.events]).trigger('checkpoint_created.Notebook', data);
};
/**
* Failure callback for creating a checkpoint.
*
* @method create_checkpoint_error
* @param {jqXHR} xhr jQuery Ajax object
* @param {String} status Description of response status
* @param {String} error_msg HTTP error message
*/
Notebook.prototype.create_checkpoint_error = function (xhr, status, error_msg) {
$([IPython.events]).trigger('checkpoint_failed.Notebook');
};
Notebook.prototype.restore_checkpoint_dialog = function (checkpoint) {
var that = this;
var checkpoint = checkpoint || this.last_checkpoint;
if ( ! checkpoint ) {
console.log("restore dialog, but no checkpoint to restore to!");
return;
}
var body = $('<div/>').append(
$('<p/>').addClass("p-space").text(
"Are you sure you want to revert the notebook to " +
"the latest checkpoint?"
).append(
$("<strong/>").text(
" This cannot be undone."
)
)
).append(
$('<p/>').addClass("p-space").text("The checkpoint was last updated at:")
).append(
$('<p/>').addClass("p-space").text(
Date(checkpoint.last_modified)
).css("text-align", "center")
);
IPython.dialog.modal({
title : "Revert notebook to checkpoint",
body : body,
buttons : {
Revert : {
class : "btn-danger",
click : function () {
that.restore_checkpoint(checkpoint.checkpoint_id);
}
},
Cancel : {}
}
});
}
/**
* Restore the notebook to a checkpoint state.
*
* @method restore_checkpoint
* @param {String} checkpoint ID
*/
Notebook.prototype.restore_checkpoint = function (checkpoint) {
$([IPython.events]).trigger('notebook_restoring.Notebook', checkpoint);
var url = this.baseProjectUrl() + 'notebooks/' + this.notebook_id + '/checkpoints/' + checkpoint;
$.post(url).done(
$.proxy(this.restore_checkpoint_success, this)
).fail(
$.proxy(this.restore_checkpoint_error, this)
);
};
/**
* Success callback for restoring a notebook to a checkpoint.
*
* @method restore_checkpoint_success
* @param {Object} data (ignored, should be empty)
* @param {String} status Description of response status
* @param {jqXHR} xhr jQuery Ajax object
*/
Notebook.prototype.restore_checkpoint_success = function (data, status, xhr) {
$([IPython.events]).trigger('checkpoint_restored.Notebook');
this.load_notebook(this.notebook_id);
};
/**
* Failure callback for restoring a notebook to a checkpoint.
*
* @method restore_checkpoint_error
* @param {jqXHR} xhr jQuery Ajax object
* @param {String} status Description of response status
* @param {String} error_msg HTTP error message
*/
Notebook.prototype.restore_checkpoint_error = function (xhr, status, error_msg) {
$([IPython.events]).trigger('checkpoint_restore_failed.Notebook');
};
/**
* Delete a notebook checkpoint.
*
* @method delete_checkpoint
* @param {String} checkpoint ID
*/
Notebook.prototype.delete_checkpoint = function (checkpoint) {
$([IPython.events]).trigger('notebook_restoring.Notebook', checkpoint);
var url = this.baseProjectUrl() + 'notebooks/' + this.notebook_id + '/checkpoints/' + checkpoint;
$.ajax(url, {
type: 'DELETE',
success: $.proxy(this.delete_checkpoint_success, this),
error: $.proxy(this.delete_notebook_error,this)
});
};
/**
* Success callback for deleting a notebook checkpoint
*
* @method delete_checkpoint_success
* @param {Object} data (ignored, should be empty)
* @param {String} status Description of response status
* @param {jqXHR} xhr jQuery Ajax object
*/
Notebook.prototype.delete_checkpoint_success = function (data, status, xhr) {
$([IPython.events]).trigger('checkpoint_deleted.Notebook', data);
this.load_notebook(this.notebook_id);
};
/**
* Failure callback for deleting a notebook checkpoint.
*
* @method delete_checkpoint_error
* @param {jqXHR} xhr jQuery Ajax object
* @param {String} status Description of response status
* @param {String} error_msg HTTP error message
*/
Notebook.prototype.delete_checkpoint_error = function (xhr, status, error_msg) {
$([IPython.events]).trigger('checkpoint_delete_failed.Notebook');
};
IPython.Notebook = Notebook;
return IPython;
}(IPython));