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//----------------------------------------------------------------------------
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// Copyright (C) 2008 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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/**
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* @module IPython
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* @namespace IPython
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* @submodule 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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/**
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* @class OutputArea
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*
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* @constructor
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*/
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var OutputArea = function (selector, prompt_area) {
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this.selector = selector;
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this.wrapper = $(selector);
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this.outputs = [];
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this.collapsed = false;
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this.scrolled = 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.create_elements();
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this.style();
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this.bind_events();
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};
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OutputArea.prototype.create_elements = function () {
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this.element = $("<div/>");
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this.collapse_button = $("<div/>");
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this.prompt_overlay = $("<div/>");
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this.wrapper.append(this.prompt_overlay);
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this.wrapper.append(this.element);
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this.wrapper.append(this.collapse_button);
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};
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OutputArea.prototype.style = function () {
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this.collapse_button.hide();
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this.prompt_overlay.hide();
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this.wrapper.addClass('output_wrapper');
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this.element.addClass('output vbox');
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this.collapse_button.button();
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this.collapse_button.addClass('output_collapsed vbox');
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this.collapse_button.attr('title', 'click to expand output');
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this.collapse_button.html('. . .');
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this.prompt_overlay.addClass('out_prompt_overlay prompt');
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this.prompt_overlay.attr('title', 'click to expand output; double click to hide output');
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this.collapse();
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};
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/**
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* Should the OutputArea scroll?
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* Returns whether the height (in lines) exceeds a threshold.
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*
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* @private
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* @method _should_scroll
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* @param [lines=100]{Integer}
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* @return {Bool}
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*
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*/
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OutputArea.prototype._should_scroll = function (lines) {
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if (lines <=0 ){ return }
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if (!lines) {
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lines = 100;
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}
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// line-height from http://stackoverflow.com/questions/1185151
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var fontSize = this.element.css('font-size');
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var lineHeight = Math.floor(parseInt(fontSize.replace('px','')) * 1.5);
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return (this.element.height() > lines * lineHeight);
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};
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OutputArea.prototype.bind_events = function () {
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var that = this;
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this.prompt_overlay.dblclick(function () { that.toggle_output(); });
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this.prompt_overlay.click(function () { that.toggle_scroll(); });
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this.element.resize(function () {
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// FIXME: Firefox on Linux misbehaves, so automatic scrolling is disabled
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if ( IPython.utils.browser[0] === "Firefox" ) {
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return;
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}
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// maybe scroll output,
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// if it's grown large enough and hasn't already been scrolled.
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if ( !that.scrolled && that._should_scroll(OutputArea.auto_scroll_threshold)) {
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that.scroll_area();
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}
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});
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this.collapse_button.click(function () {
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that.expand();
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});
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this.collapse_button.hover(function () {
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$(this).addClass("ui-state-hover");
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}, function () {
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$(this).removeClass("ui-state-hover");
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});
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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.prompt_overlay.hide();
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if (this.element.html()){
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this.collapse_button.show();
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}
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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.collapse_button.hide();
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this.element.show();
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this.prompt_overlay.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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OutputArea.prototype.scroll_area = function () {
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this.element.addClass('output_scroll');
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this.prompt_overlay.attr('title', 'click to unscroll output; double click to hide');
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this.scrolled = true;
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};
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OutputArea.prototype.unscroll_area = function () {
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this.element.removeClass('output_scroll');
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this.prompt_overlay.attr('title', 'click to scroll output; double click to hide');
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this.scrolled = false;
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};
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/**
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* Threshold to trigger autoscroll when the OutputArea is resized,
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* typically when new outputs are added.
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*
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* Behavior is undefined if autoscroll is lower than scroll_threshold,
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* unless it is < 0 then autoscroll will never be triggerd
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*
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* @property auto_scroll_threshold
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* @type Number
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* @default 20
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*
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**/
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OutputArea.auto_scroll_threshold = 20;
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/**
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* Defautl value for minimal length for output are to be able to switch to
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* scroll mode
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*
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* @property scroll_threshold
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* @type Number
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* @default 20
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*
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**/
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OutputArea.scroll_threshold = 20;
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/**
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* Scroll OutputArea if height supperior than a threshold.
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*
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* Treshold is exprimed as a number of lines, fallback to a (configurable) default.
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*
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* Negative or null (0) threshold will prevent the OutputArea ever to scroll.
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*
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* @method scroll_if_long
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* @param [lines=20,configurable]{Number}
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*
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**/
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OutputArea.prototype.scroll_if_long = function (lines) {
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var n = lines | OutputArea.scroll_threshold;
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if(n <= 0){
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return
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}
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if (this._should_scroll(n)) {
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// only allow scrolling long-enough output
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this.scroll_area();
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}
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};
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OutputArea.prototype.toggle_scroll = function () {
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if (this.scrolled) {
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this.unscroll_area();
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} else {
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// only allow scrolling long-enough output
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this.scroll_if_long();
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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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json.metadata = this.convert_mime_types({}, content.metadata);
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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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json.metadata = this.convert_mime_types({}, content.metadata);
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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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var that = this;
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setTimeout(function(){that.element.trigger('resize');}, 100);
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};
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OutputArea.prototype.create_output_area = function () {
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var oa = $("<div/>").addClass("output_area");
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if (this.prompt_area) {
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oa.append($('<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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var text = json.text;
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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 pre = this.element.find('div.'+subclass).last().find('pre');
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var html = utils.fixCarriageReturn(
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pre.html() + utils.fixConsole(text));
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pre.html(html);
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return;
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}
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}
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if (!text.replace("\r", "")) {
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// text is 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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// 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(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.display_order = ['javascript','html','latex','svg','png','jpeg','text'];
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OutputArea.prototype.append_mime_type = function (json, element, dynamic) {
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for(var type_i in OutputArea.display_order){
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var type = OutputArea.display_order[type_i];
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if(json[type] != undefined ){
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var md = {};
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if (json.metadata && json.metadata[type]) {
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md = json.metadata[type];
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};
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if(type == 'javascript'){
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if (dynamic) {
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this.append_javascript(json.javascript, md, element, dynamic);
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}
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} else {
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this['append_'+type](json[type], md, element);
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}
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return;
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}
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}
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};
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OutputArea.prototype.append_html = function (html, md, element) {
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var toinsert = $("<div/>").addClass("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, md, container) {
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// We just eval the JS code, element appears in the local scope.
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var element = $("<div/>").addClass("output_subarea");
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container.append(element);
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// Div for js shouldn't be drawn, as it will add empty height to the area.
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container.hide();
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// If the Javascript appends content to `element` that should be drawn, then
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// it must also call `container.show()`.
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try {
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eval(js);
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} catch(err) {
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console.log('Error in Javascript!');
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console.log(err);
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container.show();
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element.append($('<div/>')
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.html("Error in Javascript !<br/>"+
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err.toString()+
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'<br/>See your browser Javascript console for more details.')
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.addClass('js-error')
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);
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}
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};
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OutputArea.prototype.append_text = function (data, md, element, extra_class) {
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var toinsert = $("<div/>").addClass("output_subarea output_text");
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// escape ANSI & HTML specials in plaintext:
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data = utils.fixConsole(data);
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data = utils.fixCarriageReturn(data);
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data = utils.autoLinkUrls(data);
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if (extra_class){
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toinsert.addClass(extra_class);
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}
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toinsert.append($("<pre/>").html(data));
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element.append(toinsert);
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};
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OutputArea.prototype.append_svg = function (svg, md, element) {
|
|
|
var toinsert = $("<div/>").addClass("output_subarea output_svg");
|
|
|
toinsert.append(svg);
|
|
|
element.append(toinsert);
|
|
|
};
|
|
|
|
|
|
|
|
|
OutputArea.prototype._dblclick_to_reset_size = function (img) {
|
|
|
// schedule wrapping image in resizable after a delay,
|
|
|
// so we don't end up calling resize on a zero-size object
|
|
|
var that = this;
|
|
|
setTimeout(function () {
|
|
|
var h0 = img.height();
|
|
|
var w0 = img.width();
|
|
|
if (!(h0 && w0)) {
|
|
|
// zero size, schedule another timeout
|
|
|
that._dblclick_to_reset_size(img);
|
|
|
return;
|
|
|
}
|
|
|
img.resizable({
|
|
|
aspectRatio: true,
|
|
|
autoHide: true
|
|
|
});
|
|
|
img.dblclick(function () {
|
|
|
// resize wrapper & image together for some reason:
|
|
|
img.parent().height(h0);
|
|
|
img.height(h0);
|
|
|
img.parent().width(w0);
|
|
|
img.width(w0);
|
|
|
});
|
|
|
}, 250);
|
|
|
};
|
|
|
|
|
|
|
|
|
OutputArea.prototype.append_png = function (png, md, element) {
|
|
|
var toinsert = $("<div/>").addClass("output_subarea output_png");
|
|
|
var img = $("<img/>").attr('src','data:image/png;base64,'+png);
|
|
|
if (md['height']) {
|
|
|
img.attr('height', md['height']);
|
|
|
}
|
|
|
if (md['width']) {
|
|
|
img.attr('width', md['width']);
|
|
|
}
|
|
|
this._dblclick_to_reset_size(img);
|
|
|
toinsert.append(img);
|
|
|
element.append(toinsert);
|
|
|
};
|
|
|
|
|
|
|
|
|
OutputArea.prototype.append_jpeg = function (jpeg, md, element) {
|
|
|
var toinsert = $("<div/>").addClass("output_subarea output_jpeg");
|
|
|
var img = $("<img/>").attr('src','data:image/jpeg;base64,'+jpeg);
|
|
|
if (md['height']) {
|
|
|
img.attr('height', md['height']);
|
|
|
}
|
|
|
if (md['width']) {
|
|
|
img.attr('width', md['width']);
|
|
|
}
|
|
|
this._dblclick_to_reset_size(img);
|
|
|
toinsert.append(img);
|
|
|
element.append(toinsert);
|
|
|
};
|
|
|
|
|
|
|
|
|
OutputArea.prototype.append_latex = function (latex, md, element) {
|
|
|
// This method cannot do the typesetting because the latex first has to
|
|
|
// be on the page.
|
|
|
var toinsert = $("<div/>").addClass("output_subarea output_latex");
|
|
|
toinsert.append(latex);
|
|
|
element.append(toinsert);
|
|
|
};
|
|
|
|
|
|
OutputArea.prototype.append_raw_input = function (content) {
|
|
|
var that = this;
|
|
|
this.expand();
|
|
|
this.flush_clear_timeout();
|
|
|
var area = this.create_output_area();
|
|
|
|
|
|
area.append(
|
|
|
$("<div/>")
|
|
|
.addClass("box-flex1 output_subarea raw_input")
|
|
|
.append(
|
|
|
$("<span/>")
|
|
|
.addClass("input_prompt")
|
|
|
.text(content.prompt)
|
|
|
)
|
|
|
.append(
|
|
|
$("<input/>")
|
|
|
.addClass("raw_input")
|
|
|
.attr('type', 'text')
|
|
|
.attr("size", 80)
|
|
|
.keydown(function (event, ui) {
|
|
|
// make sure we submit on enter,
|
|
|
// and don't re-execute the *cell* on shift-enter
|
|
|
if (event.which === utils.keycodes.ENTER) {
|
|
|
that._submit_raw_input();
|
|
|
return false;
|
|
|
}
|
|
|
})
|
|
|
)
|
|
|
);
|
|
|
this.element.append(area);
|
|
|
area.find("input.raw_input").focus();
|
|
|
}
|
|
|
OutputArea.prototype._submit_raw_input = function (evt) {
|
|
|
var container = this.element.find("div.raw_input");
|
|
|
var theprompt = container.find("span.input_prompt");
|
|
|
var theinput = container.find("input.raw_input");
|
|
|
var value = theinput.attr("value");
|
|
|
var content = {
|
|
|
output_type : 'stream',
|
|
|
name : 'stdout',
|
|
|
text : theprompt.text() + value + '\n'
|
|
|
}
|
|
|
// remove form container
|
|
|
container.parent().remove();
|
|
|
// replace with plaintext version in stdout
|
|
|
this.append_output(content, false);
|
|
|
$([IPython.events]).trigger('send_input_reply.Kernel', value);
|
|
|
}
|
|
|
|
|
|
|
|
|
OutputArea.prototype.handle_clear_output = function (content) {
|
|
|
this.clear_output(content.stdout, content.stderr, content.other);
|
|
|
};
|
|
|
|
|
|
|
|
|
OutputArea.prototype.clear_output = function (stdout, stderr, other) {
|
|
|
var that = this;
|
|
|
if (this.clear_out_timeout != null){
|
|
|
// fire previous pending clear *immediately*
|
|
|
clearTimeout(this.clear_out_timeout);
|
|
|
this.clear_out_timeout = null;
|
|
|
this.clear_output_callback(this._clear_stdout, this._clear_stderr, this._clear_other);
|
|
|
}
|
|
|
// store flags for flushing the timeout
|
|
|
this._clear_stdout = stdout;
|
|
|
this._clear_stderr = stderr;
|
|
|
this._clear_other = other;
|
|
|
this.clear_out_timeout = setTimeout(function() {
|
|
|
// really clear timeout only after a short delay
|
|
|
// this reduces flicker in 'clear_output; print' cases
|
|
|
that.clear_out_timeout = null;
|
|
|
that._clear_stdout = that._clear_stderr = that._clear_other = null;
|
|
|
that.clear_output_callback(stdout, stderr, other);
|
|
|
}, 500
|
|
|
);
|
|
|
};
|
|
|
|
|
|
|
|
|
OutputArea.prototype.clear_output_callback = function (stdout, stderr, other) {
|
|
|
var output_div = this.element;
|
|
|
|
|
|
if (stdout && stderr && other){
|
|
|
// clear all, no need for logic
|
|
|
output_div.html("");
|
|
|
this.outputs = [];
|
|
|
this.unscroll_area();
|
|
|
return;
|
|
|
}
|
|
|
// remove html output
|
|
|
// each output_subarea that has an identifying class is in an output_area
|
|
|
// which is the element to be removed.
|
|
|
if (stdout) {
|
|
|
output_div.find("div.output_stdout").parent().remove();
|
|
|
}
|
|
|
if (stderr) {
|
|
|
output_div.find("div.output_stderr").parent().remove();
|
|
|
}
|
|
|
if (other) {
|
|
|
output_div.find("div.output_subarea").not("div.output_stderr").not("div.output_stdout").parent().remove();
|
|
|
}
|
|
|
this.unscroll_area();
|
|
|
|
|
|
// remove cleared outputs from JSON list:
|
|
|
for (var i = this.outputs.length - 1; i >= 0; i--) {
|
|
|
var out = this.outputs[i];
|
|
|
var output_type = out.output_type;
|
|
|
if (output_type == "display_data" && other) {
|
|
|
this.outputs.splice(i,1);
|
|
|
} else if (output_type == "stream") {
|
|
|
if (stdout && out.stream == "stdout") {
|
|
|
this.outputs.splice(i,1);
|
|
|
} else if (stderr && out.stream == "stderr") {
|
|
|
this.outputs.splice(i,1);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
};
|
|
|
|
|
|
|
|
|
OutputArea.prototype.flush_clear_timeout = function() {
|
|
|
var output_div = this.element;
|
|
|
if (this.clear_out_timeout){
|
|
|
clearTimeout(this.clear_out_timeout);
|
|
|
this.clear_out_timeout = null;
|
|
|
this.clear_output_callback(this._clear_stdout, this._clear_stderr, this._clear_other);
|
|
|
}
|
|
|
};
|
|
|
|
|
|
|
|
|
// JSON serialization
|
|
|
|
|
|
OutputArea.prototype.fromJSON = function (outputs) {
|
|
|
var len = outputs.length;
|
|
|
for (var i=0; i<len; i++) {
|
|
|
// append with dynamic=false.
|
|
|
this.append_output(outputs[i], false);
|
|
|
}
|
|
|
};
|
|
|
|
|
|
|
|
|
OutputArea.prototype.toJSON = function () {
|
|
|
var outputs = [];
|
|
|
var len = this.outputs.length;
|
|
|
for (var i=0; i<len; i++) {
|
|
|
outputs[i] = this.outputs[i];
|
|
|
}
|
|
|
return outputs;
|
|
|
};
|
|
|
|
|
|
|
|
|
IPython.OutputArea = OutputArea;
|
|
|
|
|
|
return IPython;
|
|
|
|
|
|
}(IPython));
|
|
|
|
