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//============================================================================
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// Notebook
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//============================================================================
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var IPython = (function (IPython) {
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var utils = IPython.utils;
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var Notebook = function (selector) {
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this.element = $(selector);
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this.element.scroll();
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this.element.data("notebook", this);
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this.next_prompt_number = 1;
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this.kernel = null;
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this.msg_cell_map = {};
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this.filename = null;
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this.notebook_load_re = /%notebook load/
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this.notebook_save_re = /%notebook save/
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this.notebook_filename_re = /(\w)+.ipynb/
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this.style();
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this.create_elements();
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this.bind_events();
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this.start_kernel();
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};
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Notebook.prototype.style = function () {
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$('div#notebook').addClass('border-box-sizing');
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};
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Notebook.prototype.create_elements = function () {
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// We add this end_space div to the end of the notebook div to:
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// i) provide a margin between the last cell and the end of the notebook
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// ii) to prevent the div from scrolling up when the last cell is being
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// edited, but is too low on the page, which browsers will do automatically.
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this.element.append($('<div class="end_space"></div>').height(50));
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$('div#notebook').addClass('border-box-sizing');
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};
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Notebook.prototype.bind_events = function () {
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var that = this;
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$(document).keydown(function (event) {
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// console.log(event);
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if (event.which === 38) {
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var cell = that.selected_cell();
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if (cell.at_top()) {
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event.preventDefault();
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that.select_prev();
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};
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} else if (event.which === 40) {
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var cell = that.selected_cell();
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if (cell.at_bottom()) {
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event.preventDefault();
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that.select_next();
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};
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} else if (event.which === 13 && event.shiftKey) {
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that.execute_selected_cell();
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return false;
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} else if (event.which === 13 && event.ctrlKey) {
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that.execute_selected_cell({terminal:true});
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return false;
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};
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});
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this.element.bind('collapse_pager', function () {
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var app_height = $('div#notebook_app').height(); // content height
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var splitter_height = $('div#pager_splitter').outerHeight(true);
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var new_height = app_height - splitter_height;
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that.element.animate({height : new_height + 'px'}, 'fast');
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});
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this.element.bind('expand_pager', function () {
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var app_height = $('div#notebook_app').height(); // content height
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var splitter_height = $('div#pager_splitter').outerHeight(true);
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var pager_height = $('div#pager').outerHeight(true);
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var new_height = app_height - pager_height - splitter_height;
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that.element.animate({height : new_height + 'px'}, 'fast');
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});
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this.element.bind('collapse_left_panel', function () {
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var splitter_width = $('div#left_panel_splitter').outerWidth(true);
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var new_margin = splitter_width;
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$('div#notebook_panel').animate({marginLeft : new_margin + 'px'}, 'fast');
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});
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this.element.bind('expand_left_panel', function () {
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var splitter_width = $('div#left_panel_splitter').outerWidth(true);
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var left_panel_width = IPython.left_panel.width;
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var new_margin = splitter_width + left_panel_width;
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$('div#notebook_panel').animate({marginLeft : new_margin + 'px'}, 'fast');
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});
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};
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Notebook.prototype.scroll_to_bottom = function () {
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this.element.animate({scrollTop:this.element.get(0).scrollHeight}, 0);
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};
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// Cell indexing, retrieval, etc.
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Notebook.prototype.cell_elements = function () {
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return this.element.children("div.cell");
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}
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Notebook.prototype.ncells = function (cell) {
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return this.cell_elements().length;
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}
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// TODO: we are often calling cells as cells()[i], which we should optimize
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// to cells(i) or a new method.
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Notebook.prototype.cells = function () {
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return this.cell_elements().toArray().map(function (e) {
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return $(e).data("cell");
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});
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}
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Notebook.prototype.find_cell_index = function (cell) {
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var result = null;
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this.cell_elements().filter(function (index) {
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if ($(this).data("cell") === cell) {
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result = index;
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};
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});
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return result;
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};
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Notebook.prototype.index_or_selected = function (index) {
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return index || this.selected_index() || 0;
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}
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Notebook.prototype.select = function (index) {
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if (index !== undefined && index >= 0 && index < this.ncells()) {
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if (this.selected_index() !== null) {
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this.selected_cell().unselect();
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};
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this.cells()[index].select();
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if (index === (this.ncells()-1)) {
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this.scroll_to_bottom();
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};
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};
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return this;
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};
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Notebook.prototype.select_next = function () {
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var index = this.selected_index();
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if (index !== null && index >= 0 && (index+1) < this.ncells()) {
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this.select(index+1);
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};
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return this;
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};
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Notebook.prototype.select_prev = function () {
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var index = this.selected_index();
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if (index !== null && index >= 0 && (index-1) < this.ncells()) {
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this.select(index-1);
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};
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return this;
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};
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Notebook.prototype.selected_index = function () {
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var result = null;
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this.cell_elements().filter(function (index) {
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if ($(this).data("cell").selected === true) {
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result = index;
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};
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});
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return result;
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};
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Notebook.prototype.cell_for_msg = function (msg_id) {
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var cell_id = this.msg_cell_map[msg_id];
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var result = null;
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this.cell_elements().filter(function (index) {
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cell = $(this).data("cell");
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if (cell.cell_id === cell_id) {
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result = cell;
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};
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});
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return result;
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};
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Notebook.prototype.selected_cell = function () {
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return this.cell_elements().eq(this.selected_index()).data("cell");
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}
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// Cell insertion, deletion and moving.
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Notebook.prototype.delete_cell = function (index) {
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var i = index || this.selected_index();
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if (i !== null && i >= 0 && i < this.ncells()) {
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this.cell_elements().eq(i).remove();
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if (i === (this.ncells())) {
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this.select(i-1);
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} else {
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this.select(i);
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};
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};
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return this;
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};
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Notebook.prototype.append_cell = function (cell) {
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this.element.find('div.end_space').before(cell.element);
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return this;
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};
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Notebook.prototype.insert_cell_after = function (cell, index) {
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var ncells = this.ncells();
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if (ncells === 0) {
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this.append_cell(cell);
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return this;
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};
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if (index >= 0 && index < ncells) {
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this.cell_elements().eq(index).after(cell.element);
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};
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return this
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};
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Notebook.prototype.insert_cell_before = function (cell, index) {
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var ncells = this.ncells();
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if (ncells === 0) {
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this.append_cell(cell);
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return this;
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};
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if (index >= 0 && index < ncells) {
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this.cell_elements().eq(index).before(cell.element);
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};
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return this;
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};
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Notebook.prototype.move_cell_up = function (index) {
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var i = index || this.selected_index();
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if (i !== null && i < this.ncells() && i > 0) {
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var pivot = this.cell_elements().eq(i-1);
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var tomove = this.cell_elements().eq(i);
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if (pivot !== null && tomove !== null) {
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tomove.detach();
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pivot.before(tomove);
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this.select(i-1);
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};
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};
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return this;
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}
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Notebook.prototype.move_cell_down = function (index) {
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var i = index || this.selected_index();
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if (i !== null && i < (this.ncells()-1) && i >= 0) {
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var pivot = this.cell_elements().eq(i+1)
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var tomove = this.cell_elements().eq(i)
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if (pivot !== null && tomove !== null) {
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tomove.detach();
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pivot.after(tomove);
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this.select(i+1);
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};
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};
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return this;
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}
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Notebook.prototype.sort_cells = function () {
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var ncells = this.ncells();
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var sindex = this.selected_index();
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var swapped;
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do {
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swapped = false
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for (var i=1; i<ncells; i++) {
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current = this.cell_elements().eq(i).data("cell");
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previous = this.cell_elements().eq(i-1).data("cell");
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if (previous.input_prompt_number > current.input_prompt_number) {
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this.move_cell_up(i);
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swapped = true;
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};
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};
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} while (swapped);
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this.select(sindex);
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return this;
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};
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Notebook.prototype.insert_code_cell_before = function (index) {
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// TODO: Bounds check for i
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var i = this.index_or_selected(index);
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var cell = new IPython.CodeCell(this);
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// cell.set_input_prompt(this.next_prompt_number);
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cell.set_input_prompt();
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this.next_prompt_number = this.next_prompt_number + 1;
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this.insert_cell_before(cell, i);
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this.select(this.find_cell_index(cell));
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return this;
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}
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Notebook.prototype.insert_code_cell_after = function (index) {
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// TODO: Bounds check for i
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var i = this.index_or_selected(index);
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var cell = new IPython.CodeCell(this);
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// cell.set_input_prompt(this.next_prompt_number);
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cell.set_input_prompt();
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this.next_prompt_number = this.next_prompt_number + 1;
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this.insert_cell_after(cell, i);
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this.select(this.find_cell_index(cell));
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return this;
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}
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Notebook.prototype.insert_text_cell_before = function (index) {
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// TODO: Bounds check for i
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var i = this.index_or_selected(index);
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var cell = new IPython.TextCell(this);
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cell.config_mathjax();
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this.insert_cell_before(cell, i);
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this.select(this.find_cell_index(cell));
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return this;
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}
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Notebook.prototype.insert_text_cell_after = function (index) {
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// TODO: Bounds check for i
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var i = this.index_or_selected(index);
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var cell = new IPython.TextCell(this);
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cell.config_mathjax();
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this.insert_cell_after(cell, i);
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this.select(this.find_cell_index(cell));
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return this;
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}
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Notebook.prototype.text_to_code = function (index) {
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// TODO: Bounds check for i
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var i = this.index_or_selected(index);
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var source_element = this.cell_elements().eq(i);
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var source_cell = source_element.data("cell");
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if (source_cell instanceof IPython.TextCell) {
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this.insert_code_cell_after(i);
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var target_cell = this.cells()[i+1];
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target_cell.set_code(source_cell.get_text());
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source_element.remove();
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};
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};
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Notebook.prototype.code_to_text = function (index) {
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// TODO: Bounds check for i
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var i = this.index_or_selected(index);
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var source_element = this.cell_elements().eq(i);
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var source_cell = source_element.data("cell");
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if (source_cell instanceof IPython.CodeCell) {
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this.insert_text_cell_after(i);
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var target_cell = this.cells()[i+1];
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var text = source_cell.get_code();
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if (text === "") {text = target_cell.placeholder;};
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target_cell.set_text(text);
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source_element.remove();
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target_cell.edit();
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};
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};
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// Cell collapsing
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Notebook.prototype.collapse = function (index) {
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var i = this.index_or_selected(index);
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this.cells()[i].collapse();
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};
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Notebook.prototype.expand = function (index) {
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var i = this.index_or_selected(index);
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this.cells()[i].expand();
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};
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// Kernel related things
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Notebook.prototype.start_kernel = function () {
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this.kernel = new IPython.Kernel();
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this.kernel.start_kernel($.proxy(this.kernel_started, this));
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};
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Notebook.prototype.handle_shell_reply = function (e) {
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reply = $.parseJSON(e.data);
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var header = reply.header;
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var content = reply.content;
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var msg_type = header.msg_type;
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// console.log(reply);
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var cell = this.cell_for_msg(reply.parent_header.msg_id);
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if (msg_type === "execute_reply") {
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cell.set_input_prompt(content.execution_count);
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} else if (msg_type === "complete_reply") {
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cell.finish_completing(content.matched_text, content.matches);
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};
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var payload = content.payload || [];
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this.handle_payload(payload);
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};
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Notebook.prototype.handle_payload = function (payload) {
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var l = payload.length;
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if (l > 0) {
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IPython.pager.clear();
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IPython.pager.expand();
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};
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for (var i=0; i<l; i++) {
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IPython.pager.append_text(payload[i].text);
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};
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};
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Notebook.prototype.handle_iopub_reply = function (e) {
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reply = $.parseJSON(e.data);
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var content = reply.content;
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// console.log(reply);
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var msg_type = reply.header.msg_type;
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var cell = this.cell_for_msg(reply.parent_header.msg_id);
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if (msg_type === "stream") {
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cell.expand();
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cell.append_stream(content.data + "\n");
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} else if (msg_type === "display_data") {
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cell.expand();
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cell.append_display_data(content.data);
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} else if (msg_type === "pyout") {
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cell.expand();
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cell.append_pyout(content.data, content.execution_count)
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} else if (msg_type === "pyerr") {
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cell.expand();
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cell.append_pyerr(content.ename, content.evalue, content.traceback);
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} else if (msg_type === "status") {
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if (content.execution_state === "busy") {
|
|
|
IPython.kernel_status_widget.status_busy();
|
|
|
} else if (content.execution_state === "idle") {
|
|
|
IPython.kernel_status_widget.status_idle();
|
|
|
};
|
|
|
}
|
|
|
};
|
|
|
|
|
|
|
|
|
Notebook.prototype.kernel_started = function () {
|
|
|
console.log("Kernel started: ", this.kernel.kernel_id);
|
|
|
this.kernel.shell_channel.onmessage = $.proxy(this.handle_shell_reply,this);
|
|
|
this.kernel.iopub_channel.onmessage = $.proxy(this.handle_iopub_reply,this);
|
|
|
};
|
|
|
|
|
|
|
|
|
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
|
|
|
default_options = {terminal: false, add_new: true}
|
|
|
$.extend(default_options, options)
|
|
|
var that = this;
|
|
|
var cell = that.selected_cell();
|
|
|
var cell_index = that.find_cell_index(cell);
|
|
|
if (cell instanceof IPython.CodeCell) {
|
|
|
cell.clear_output();
|
|
|
var code = cell.get_code();
|
|
|
if (that.notebook_load_re.test(code)) {
|
|
|
// %notebook load
|
|
|
var code_parts = code.split(' ');
|
|
|
if (code_parts.length === 3) {
|
|
|
that.load_notebook(code_parts[2]);
|
|
|
};
|
|
|
} else if (that.notebook_save_re.test(code)) {
|
|
|
// %notebook save
|
|
|
var code_parts = code.split(' ');
|
|
|
if (code_parts.length === 3) {
|
|
|
that.save_notebook(code_parts[2]);
|
|
|
} else {
|
|
|
that.save_notebook()
|
|
|
};
|
|
|
} else {
|
|
|
var msg_id = that.kernel.execute(cell.get_code());
|
|
|
that.msg_cell_map[msg_id] = cell.cell_id;
|
|
|
};
|
|
|
} else if (cell instanceof IPython.TextCell) {
|
|
|
cell.render();
|
|
|
}
|
|
|
if (default_options.terminal) {
|
|
|
cell.clear_input();
|
|
|
} else {
|
|
|
if ((cell_index === (that.ncells()-1)) && default_options.add_new) {
|
|
|
that.insert_code_cell_after();
|
|
|
// 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);
|
|
|
};
|
|
|
};
|
|
|
};
|
|
|
|
|
|
|
|
|
Notebook.prototype.execute_all_cells = function () {
|
|
|
var ncells = this.ncells();
|
|
|
for (var i=0; i<ncells; i++) {
|
|
|
this.select(i);
|
|
|
this.execute_selected_cell({add_new:false});
|
|
|
};
|
|
|
this.scroll_to_bottom();
|
|
|
};
|
|
|
|
|
|
|
|
|
Notebook.prototype.complete_cell = function (cell, line, cursor_pos) {
|
|
|
var msg_id = this.kernel.complete(line, cursor_pos);
|
|
|
this.msg_cell_map[msg_id] = cell.cell_id;
|
|
|
};
|
|
|
|
|
|
// Persistance and loading
|
|
|
|
|
|
|
|
|
Notebook.prototype.fromJSON = function (data) {
|
|
|
var ncells = this.ncells();
|
|
|
for (var i=0; i<ncells; i++) {
|
|
|
// Always delete cell 0 as they get renumbered as they are deleted.
|
|
|
this.delete_cell(0);
|
|
|
};
|
|
|
var new_cells = data.cells;
|
|
|
ncells = new_cells.length;
|
|
|
var cell_data = null;
|
|
|
for (var i=0; i<ncells; i++) {
|
|
|
cell_data = new_cells[i];
|
|
|
if (cell_data.cell_type == 'code') {
|
|
|
this.insert_code_cell_after();
|
|
|
this.selected_cell().fromJSON(cell_data);
|
|
|
} else if (cell_data.cell_type === 'text') {
|
|
|
this.insert_text_cell_after();
|
|
|
this.selected_cell().fromJSON(cell_data);
|
|
|
};
|
|
|
};
|
|
|
};
|
|
|
|
|
|
|
|
|
Notebook.prototype.toJSON = function () {
|
|
|
var cells = this.cells();
|
|
|
var ncells = cells.length;
|
|
|
cell_array = new Array(ncells);
|
|
|
for (var i=0; i<ncells; i++) {
|
|
|
cell_array[i] = cells[i].toJSON();
|
|
|
};
|
|
|
json = {
|
|
|
cells : cell_array
|
|
|
};
|
|
|
return json
|
|
|
};
|
|
|
|
|
|
|
|
|
Notebook.prototype.test_filename = function (filename) {
|
|
|
if (this.notebook_filename_re.test(filename)) {
|
|
|
return true;
|
|
|
} else {
|
|
|
var bad_filename = $('<div/>');
|
|
|
bad_filename.html(
|
|
|
"The filename you entered (" + filename + ") is not valid. Notebook filenames must have the following form: foo.ipynb"
|
|
|
);
|
|
|
bad_filename.dialog({title: 'Invalid filename', modal: true});
|
|
|
return false;
|
|
|
};
|
|
|
};
|
|
|
|
|
|
Notebook.prototype.save_notebook = function (filename) {
|
|
|
this.filename = filename || this.filename || '';
|
|
|
if (this.filename === '') {
|
|
|
var no_filename = $('<div/>');
|
|
|
no_filename.html(
|
|
|
"This notebook has no filename, please specify a filename of the form: foo.ipynb"
|
|
|
);
|
|
|
no_filename.dialog({title: 'Missing filename', modal: true});
|
|
|
return;
|
|
|
}
|
|
|
if (!this.test_filename(this.filename)) {return;}
|
|
|
var thedata = this.toJSON();
|
|
|
var settings = {
|
|
|
processData : false,
|
|
|
cache : false,
|
|
|
type : "PUT",
|
|
|
data : JSON.stringify(thedata),
|
|
|
success : function (data, status, xhr) {console.log(data);}
|
|
|
};
|
|
|
$.ajax("/notebooks/" + this.filename, settings);
|
|
|
};
|
|
|
|
|
|
|
|
|
Notebook.prototype.load_notebook = function (filename) {
|
|
|
if (!this.test_filename(filename)) {return;}
|
|
|
var that = this;
|
|
|
// We do the call with settings so we can set cache to false.
|
|
|
var settings = {
|
|
|
processData : false,
|
|
|
cache : false,
|
|
|
type : "GET",
|
|
|
dataType : "json",
|
|
|
success : function (data, status, xhr) {
|
|
|
that.fromJSON(data);
|
|
|
that.filename = filename;
|
|
|
that.kernel.restart();
|
|
|
}
|
|
|
};
|
|
|
$.ajax("/notebooks/" + filename, settings);
|
|
|
}
|
|
|
|
|
|
IPython.Notebook = Notebook;
|
|
|
|
|
|
return IPython;
|
|
|
|
|
|
}(IPython));
|
|
|
|
|
|
|
