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//----------------------------------------------------------------------------
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// Copyright (C) 2008-2011 The IPython Development Team
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//
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// Distributed under the terms of the BSD License. The full license is in
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// the file COPYING, distributed as part of this software.
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//----------------------------------------------------------------------------
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//============================================================================
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// OutputArea
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//============================================================================
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var IPython = (function (IPython) {
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"use strict";
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var utils = IPython.utils;
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var OutputArea = function (selector, prompt_area) {
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this.selector = selector;
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this.element = $(selector);
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this.outputs = [];
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this.collapsed = false;
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this.clear_out_timeout = null;
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if (prompt_area === undefined) {
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this.prompt_area = true;
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} else {
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this.prompt_area = prompt_area;
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};
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this.style();
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};
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OutputArea.prototype.style = function () {
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this.element.addClass('output vbox');
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this.collapse();
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};
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OutputArea.prototype.collapse = function () {
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if (!this.collapsed) {
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this.element.hide();
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this.collapsed = true;
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};
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};
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OutputArea.prototype.expand = function () {
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if (this.collapsed) {
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this.element.show();
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this.collapsed = false;
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};
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};
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OutputArea.prototype.toggle_output = function () {
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if (this.collapsed) {
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this.expand();
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} else {
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this.collapse();
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};
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};
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// typeset with MathJax if MathJax is available
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OutputArea.prototype.typeset = function () {
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if (window.MathJax){
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MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
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}
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};
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OutputArea.prototype.handle_output = function (msg_type, content) {
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var json = {};
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json.output_type = msg_type;
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if (msg_type === "stream") {
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json.text = content.data;
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json.stream = content.name;
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} else if (msg_type === "display_data") {
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json = this.convert_mime_types(json, content.data);
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} else if (msg_type === "pyout") {
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json.prompt_number = content.execution_count;
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json = this.convert_mime_types(json, content.data);
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} else if (msg_type === "pyerr") {
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json.ename = content.ename;
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json.evalue = content.evalue;
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json.traceback = content.traceback;
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};
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// append with dynamic=true
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this.append_output(json, true);
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};
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OutputArea.prototype.convert_mime_types = function (json, data) {
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if (data['text/plain'] !== undefined) {
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json.text = data['text/plain'];
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};
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if (data['text/html'] !== undefined) {
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json.html = data['text/html'];
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};
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if (data['image/svg+xml'] !== undefined) {
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json.svg = data['image/svg+xml'];
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};
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if (data['image/png'] !== undefined) {
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json.png = data['image/png'];
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};
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if (data['image/jpeg'] !== undefined) {
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json.jpeg = data['image/jpeg'];
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};
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if (data['text/latex'] !== undefined) {
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json.latex = data['text/latex'];
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};
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if (data['application/json'] !== undefined) {
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json.json = data['application/json'];
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};
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if (data['application/javascript'] !== undefined) {
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json.javascript = data['application/javascript'];
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}
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return json;
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};
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OutputArea.prototype.append_output = function (json, dynamic) {
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// If dynamic is true, javascript output will be eval'd.
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this.expand();
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this.flush_clear_timeout();
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if (json.output_type === 'pyout') {
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this.append_pyout(json, dynamic);
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} else if (json.output_type === 'pyerr') {
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this.append_pyerr(json);
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} else if (json.output_type === 'display_data') {
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this.append_display_data(json, dynamic);
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} else if (json.output_type === 'stream') {
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this.append_stream(json);
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};
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this.outputs.push(json);
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};
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OutputArea.prototype.create_output_area = function () {
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var oa = $("<div/>").addClass("hbox output_area");
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if (this.prompt_area) {
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oa.append($('<div/>').addClass('prompt'));
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}
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return oa;
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};
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OutputArea.prototype.append_pyout = function (json, dynamic) {
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var n = json.prompt_number || ' ';
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var toinsert = this.create_output_area();
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if (this.prompt_area) {
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toinsert.find('div.prompt').addClass('output_prompt').html('Out[' + n + ']:');
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}
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this.append_mime_type(json, toinsert, dynamic);
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this.element.append(toinsert);
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// If we just output latex, typeset it.
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if ((json.latex !== undefined) || (json.html !== undefined)) {
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this.typeset();
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};
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};
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OutputArea.prototype.append_pyerr = function (json) {
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var tb = json.traceback;
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if (tb !== undefined && tb.length > 0) {
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var s = '';
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var len = tb.length;
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for (var i=0; i<len; i++) {
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s = s + tb[i] + '\n';
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}
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s = s + '\n';
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var toinsert = this.create_output_area();
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this.append_text(s, toinsert);
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this.element.append(toinsert);
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};
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};
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OutputArea.prototype.append_stream = function (json) {
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// temporary fix: if stream undefined (json file written prior to this patch),
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// default to most likely stdout:
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if (json.stream == undefined){
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json.stream = 'stdout';
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}
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if (!utils.fixConsole(json.text)){
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// fixConsole gives nothing (empty string, \r, etc.)
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// so don't append any elements, which might add undesirable space
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return;
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}
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var subclass = "output_"+json.stream;
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if (this.outputs.length > 0){
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// have at least one output to consider
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var last = this.outputs[this.outputs.length-1];
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if (last.output_type == 'stream' && json.stream == last.stream){
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// latest output was in the same stream,
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// so append directly into its pre tag
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// escape ANSI & HTML specials:
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var text = utils.fixConsole(json.text);
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this.element.find('div.'+subclass).last().find('pre').append(text);
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return;
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}
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}
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// If we got here, attach a new div
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var toinsert = this.create_output_area();
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this.append_text(json.text, toinsert, "output_stream "+subclass);
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this.element.append(toinsert);
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};
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OutputArea.prototype.append_display_data = function (json, dynamic) {
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var toinsert = this.create_output_area();
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this.append_mime_type(json, toinsert, dynamic);
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this.element.append(toinsert);
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// If we just output latex, typeset it.
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if ( (json.latex !== undefined) || (json.html !== undefined) ) {
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this.typeset();
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};
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};
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OutputArea.prototype.append_mime_type = function (json, element, dynamic) {
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if (json.javascript !== undefined && dynamic) {
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this.append_javascript(json.javascript, element, dynamic);
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} else if (json.html !== undefined) {
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this.append_html(json.html, element);
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} else if (json.latex !== undefined) {
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this.append_latex(json.latex, element);
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} else if (json.svg !== undefined) {
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this.append_svg(json.svg, element);
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} else if (json.png !== undefined) {
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this.append_png(json.png, element);
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} else if (json.jpeg !== undefined) {
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this.append_jpeg(json.jpeg, element);
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} else if (json.text !== undefined) {
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this.append_text(json.text, element);
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};
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};
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OutputArea.prototype.append_html = function (html, element) {
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var toinsert = $("<div/>").addClass("box-flex1 output_subarea output_html rendered_html");
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toinsert.append(html);
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element.append(toinsert);
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};
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OutputArea.prototype.append_javascript = function (js, container) {
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// We just eval the JS code, element appears in the local scope.
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var element = $("<div/>").addClass("box-flex1 output_subarea");
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container.append(element);
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// Div for js shouldn't be drawn, as it will add empty height to the area.
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container.hide();
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// If the Javascript appends content to `element` that should be drawn, then
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// it must also call `container.show()`.
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eval(js);
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}
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OutputArea.prototype.append_text = function (data, element, extra_class) {
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var toinsert = $("<div/>").addClass("box-flex1 output_subarea output_text");
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// escape ANSI & HTML specials in plaintext:
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data = utils.fixConsole(data);
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if (extra_class){
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toinsert.addClass(extra_class);
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}
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toinsert.append($("<pre/>").html(data));
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element.append(toinsert);
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};
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OutputArea.prototype.append_svg = function (svg, element) {
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var toinsert = $("<div/>").addClass("box-flex1 output_subarea output_svg");
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toinsert.append(svg);
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element.append(toinsert);
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};
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OutputArea.prototype.append_png = function (png, element) {
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var toinsert = $("<div/>").addClass("box-flex1 output_subarea output_png");
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toinsert.append($("<img/>").attr('src','data:image/png;base64,'+png));
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element.append(toinsert);
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};
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OutputArea.prototype.append_jpeg = function (jpeg, element) {
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var toinsert = $("<div/>").addClass("box-flex1 output_subarea output_jpeg");
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toinsert.append($("<img/>").attr('src','data:image/jpeg;base64,'+jpeg));
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element.append(toinsert);
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};
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OutputArea.prototype.append_latex = function (latex, element) {
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// This method cannot do the typesetting because the latex first has to
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// be on the page.
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var toinsert = $("<div/>").addClass("box-flex1 output_subarea output_latex");
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toinsert.append(latex);
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element.append(toinsert);
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};
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OutputArea.prototype.handle_clear_output = function (content) {
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this.clear_output(content.stdout, content.stderr, content.other);
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}
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OutputArea.prototype.clear_output = function (stdout, stderr, other) {
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var that = this;
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if (this.clear_out_timeout != null){
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// fire previous pending clear *immediately*
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clearTimeout(this.clear_out_timeout);
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this.clear_out_timeout = null;
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this.clear_output_callback(this._clear_stdout, this._clear_stderr, this._clear_other);
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}
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// store flags for flushing the timeout
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this._clear_stdout = stdout;
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this._clear_stderr = stderr;
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this._clear_other = other;
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this.clear_out_timeout = setTimeout(function() {
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// really clear timeout only after a short delay
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// this reduces flicker in 'clear_output; print' cases
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that.clear_out_timeout = null;
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that._clear_stdout = that._clear_stderr = that._clear_other = null;
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that.clear_output_callback(stdout, stderr, other);
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}, 500
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);
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};
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OutputArea.prototype.clear_output_callback = function (stdout, stderr, other) {
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var output_div = this.element;
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if (stdout && stderr && other){
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// clear all, no need for logic
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output_div.html("");
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this.outputs = [];
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return;
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}
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// remove html output
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// each output_subarea that has an identifying class is in an output_area
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// which is the element to be removed.
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if (stdout) {
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output_div.find("div.output_stdout").parent().remove();
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}
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if (stderr) {
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output_div.find("div.output_stderr").parent().remove();
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}
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if (other) {
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output_div.find("div.output_subarea").not("div.output_stderr").not("div.output_stdout").parent().remove();
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}
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// remove cleared outputs from JSON list:
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for (var i = this.outputs.length - 1; i >= 0; i--) {
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var out = this.outputs[i];
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var output_type = out.output_type;
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if (output_type == "display_data" && other) {
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this.outputs.splice(i,1);
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} else if (output_type == "stream") {
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if (stdout && out.stream == "stdout") {
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this.outputs.splice(i,1);
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} else if (stderr && out.stream == "stderr") {
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this.outputs.splice(i,1);
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}
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}
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}
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};
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OutputArea.prototype.flush_clear_timeout = function() {
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var output_div = this.element;
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if (this.clear_out_timeout){
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clearTimeout(this.clear_out_timeout);
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this.clear_out_timeout = null;
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this.clear_output_callback(this._clear_stdout, this._clear_stderr, this._clear_other);
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};
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}
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// JSON serialization
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OutputArea.prototype.fromJSON = function (outputs) {
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var len = outputs.length;
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for (var i=0; i<len; i++) {
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// append with dynamic=false.
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this.append_output(outputs[i], false);
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};
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};
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OutputArea.prototype.toJSON = function () {
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var outputs = [];
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var len = this.outputs.length;
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for (var i=0; i<len; i++) {
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outputs[i] = this.outputs[i];
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};
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return outputs;
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};
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IPython.OutputArea = OutputArea;
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return IPython;
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}(IPython));
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