//----------------------------------------------------------------------------
// Copyright (C) 2008-2011 The IPython Development Team
//
// Distributed under the terms of the BSD License. The full license is in
// the file COPYING, distributed as part of this software.
//----------------------------------------------------------------------------
//============================================================================
// CodeCell
//============================================================================
var IPython = (function (IPython) {
"use strict";
var utils = IPython.utils;
var key = IPython.utils.keycodes;
var CodeCell = function (notebook) {
this.code_mirror = null;
this.input_prompt_number = null;
this.completion_cursor = null;
this.outputs = [];
this.collapsed = false;
this.tooltip_timeout = null;
this.clear_out_timeout = null;
IPython.Cell.apply(this, arguments);
};
CodeCell.prototype = new IPython.Cell();
CodeCell.prototype.create_element = function () {
var cell = $('<div></div>').addClass('cell border-box-sizing code_cell vbox');
cell.attr('tabindex','2');
var input = $('<div></div>').addClass('input hbox');
input.append($('<div/>').addClass('prompt input_prompt'));
var input_area = $('<div/>').addClass('input_area box-flex1');
this.code_mirror = CodeMirror(input_area.get(0), {
indentUnit : 4,
mode: 'python',
theme: 'ipython',
readOnly: this.read_only,
onKeyEvent: $.proxy(this.handle_codemirror_keyevent,this)
});
input.append(input_area);
var output = $('<div></div>').addClass('output vbox');
cell.append(input).append(output);
this.element = cell;
this.collapse();
// construct a completer
this.completer = new IPython.Completer(this);
};
//TODO, try to diminish the number of parameters.
CodeCell.prototype.request_tooltip_after_time = function (pre_cursor,time){
var that = this;
if (pre_cursor === "" || pre_cursor === "(" ) {
// don't do anything if line beggin with '(' or is empty
} else {
// Will set a timer to request tooltip in `time`
that.tooltip_timeout = setTimeout(function(){
IPython.notebook.request_tool_tip(that, pre_cursor)
},time);
}
};
CodeCell.prototype.handle_codemirror_keyevent = function (editor, event) {
// This method gets called in CodeMirror's onKeyDown/onKeyPress
// handlers and is used to provide custom key handling. Its return
// value is used to determine if CodeMirror should ignore the event:
// true = ignore, false = don't ignore.
if (this.read_only){
return false;
}
// note that we are comparing and setting the time to wait at each key press.
// a better wqy might be to generate a new function on each time change and
// assign it to CodeCell.prototype.request_tooltip_after_time
var tooltip_wait_time = this.notebook.time_before_tooltip;
var tooltip_on_tab = this.notebook.tooltip_on_tab;
var that = this;
// whatever key is pressed, first, cancel the tooltip request before
// they are sent, and remove tooltip if any
if(event.type === 'keydown' ) {
that.remove_and_cancel_tooltip();
};
if (event.keyCode === key.enter && (event.shiftKey || event.ctrlKey)) {
// Always ignore shift-enter in CodeMirror as we handle it.
return true;
} else if (event.which === 40 && event.type === 'keypress' && tooltip_wait_time >= 0) {
// triger aon keypress (!) otherwise inconsistent event.which depending on plateform
// browser and keyboard layout !
// Pressing '(' , request tooltip, don't forget to reappend it
var cursor = editor.getCursor();
var pre_cursor = editor.getRange({line:cursor.line,ch:0},cursor).trim()+'(';
that.request_tooltip_after_time(pre_cursor,tooltip_wait_time);
} else if (event.which === key.upArrow) {
// If we are not at the top, let CM handle the up arrow and
// prevent the global keydown handler from handling it.
if (!that.at_top()) {
event.stop();
return false;
} else {
return true;
};
} else if (event.which === key.downArrow) {
// If we are not at the bottom, let CM handle the down arrow and
// prevent the global keydown handler from handling it.
if (!that.at_bottom()) {
event.stop();
return false;
} else {
return true;
};
} else if (event.keyCode === key.tab && event.type == 'keydown') {
// Tab completion.
var cur = editor.getCursor();
//Do not trim here because of tooltip
var pre_cursor = editor.getRange({line:cur.line,ch:0},cur);
if (pre_cursor.trim() === "") {
// Don't autocomplete if the part of the line before the cursor
// is empty. In this case, let CodeMirror handle indentation.
return false;
} else if ((pre_cursor.substr(-1) === "("|| pre_cursor.substr(-1) === " ") && tooltip_on_tab ) {
that.request_tooltip_after_time(pre_cursor,0);
// Prevent the event from bubbling up.
event.stop();
// Prevent CodeMirror from handling the tab.
return true;
} else {
event.stop();
this.completer.startCompletion();
return true;
};
} else if (event.keyCode === key.backspace && event.type == 'keydown') {
// If backspace and the line ends with 4 spaces, remove them.
var cur = editor.getCursor();
var line = editor.getLine(cur.line);
var ending = line.slice(-4);
if (ending === ' ') {
editor.replaceRange('',
{line: cur.line, ch: cur.ch-4},
{line: cur.line, ch: cur.ch}
);
event.stop();
return true;
} else {
return false;
};
} else {
// keypress/keyup also trigger on TAB press, and we don't want to
// use those to disable tab completion.
return false;
};
return false;
};
CodeCell.prototype.remove_and_cancel_tooltip = function() {
// note that we don't handle closing directly inside the calltip
// as in the completer, because it is not focusable, so won't
// get the event.
if (this.tooltip_timeout != null){
clearTimeout(this.tooltip_timeout);
$('#tooltip').remove();
this.tooltip_timeout = null;
}
}
CodeCell.prototype.finish_tooltip = function (reply) {
// Extract call tip data; the priority is call, init, main.
defstring = reply.call_def;
if (defstring == null) { defstring = reply.init_definition; }
if (defstring == null) { defstring = reply.definition; }
docstring = reply.call_docstring;
if (docstring == null) { docstring = reply.init_docstring; }
if (docstring == null) { docstring = reply.docstring; }
if (docstring == null) { docstring = "<empty docstring>"; }
name=reply.name;
var that = this;
var tooltip = $('<div/>').attr('id', 'tooltip').addClass('tooltip');
// remove to have the tooltip not Limited in X and Y
tooltip.addClass('smalltooltip');
var pre=$('<pre/>').html(utils.fixConsole(docstring));
var expandlink=$('<a/>').attr('href',"#");
expandlink.addClass("ui-corner-all"); //rounded corner
expandlink.attr('role',"button");
//expandlink.addClass('ui-button');
//expandlink.addClass('ui-state-default');
var expandspan=$('<span/>').text('Expand');
expandspan.addClass('ui-icon');
expandspan.addClass('ui-icon-plus');
expandlink.append(expandspan);
expandlink.attr('id','expanbutton');
expandlink.click(function(){
tooltip.removeClass('smalltooltip');
tooltip.addClass('bigtooltip');
$('#expanbutton').remove();
setTimeout(function(){that.code_mirror.focus();}, 50);
});
var morelink=$('<a/>').attr('href',"#");
morelink.attr('role',"button");
morelink.addClass('ui-button');
//morelink.addClass("ui-corner-all"); //rounded corner
//morelink.addClass('ui-state-default');
var morespan=$('<span/>').text('Open in Pager');
morespan.addClass('ui-icon');
morespan.addClass('ui-icon-arrowstop-l-n');
morelink.append(morespan);
morelink.click(function(){
var msg_id = IPython.notebook.kernel.execute(name+"?");
IPython.notebook.msg_cell_map[msg_id] = IPython.notebook.get_selected_cell().cell_id;
that.remove_and_cancel_tooltip();
setTimeout(function(){that.code_mirror.focus();}, 50);
});
var closelink=$('<a/>').attr('href',"#");
closelink.attr('role',"button");
closelink.addClass('ui-button');
//closelink.addClass("ui-corner-all"); //rounded corner
//closelink.adClass('ui-state-default'); // grey background and blue cross
var closespan=$('<span/>').text('Close');
closespan.addClass('ui-icon');
closespan.addClass('ui-icon-close');
closelink.append(closespan);
closelink.click(function(){
that.remove_and_cancel_tooltip();
setTimeout(function(){that.code_mirror.focus();}, 50);
});
//construct the tooltip
tooltip.append(closelink);
tooltip.append(expandlink);
tooltip.append(morelink);
if(defstring){
defstring_html = $('<pre/>').html(utils.fixConsole(defstring));
tooltip.append(defstring_html);
}
tooltip.append(pre);
var pos = this.code_mirror.cursorCoords();
tooltip.css('left',pos.x+'px');
tooltip.css('top',pos.yBot+'px');
$('body').append(tooltip);
// issues with cross-closing if multiple tooltip in less than 5sec
// keep it comented for now
// setTimeout(that.remove_and_cancel_tooltip, 5000);
};
// called when completion came back from the kernel. this will inspect the
// curent cell for (more) completion merge the resuults with the ones
// comming from the kernel and forward it to the completer
CodeCell.prototype.finish_completing = function (matched_text, matches) {
this.completer.finish_completing(matched_text,matches);
}
CodeCell.prototype.select = function () {
IPython.Cell.prototype.select.apply(this);
this.code_mirror.refresh();
this.code_mirror.focus();
// We used to need an additional refresh() after the focus, but
// it appears that this has been fixed in CM. This bug would show
// up on FF when a newly loaded markdown cell was edited.
};
CodeCell.prototype.select_all = function () {
var start = {line: 0, ch: 0};
var nlines = this.code_mirror.lineCount();
var last_line = this.code_mirror.getLine(nlines-1);
var end = {line: nlines-1, ch: last_line.length};
this.code_mirror.setSelection(start, end);
};
CodeCell.prototype.append_output = function (json, dynamic) {
// If dynamic is true, javascript output will be eval'd.
this.expand();
this.flush_clear_timeout();
if (json.output_type === 'pyout') {
this.append_pyout(json, dynamic);
} else if (json.output_type === 'pyerr') {
this.append_pyerr(json);
} else if (json.output_type === 'display_data') {
this.append_display_data(json, dynamic);
} else if (json.output_type === 'stream') {
this.append_stream(json);
};
this.outputs.push(json);
};
CodeCell.prototype.create_output_area = function () {
var oa = $("<div/>").addClass("hbox output_area");
oa.append($('<div/>').addClass('prompt'));
return oa;
};
CodeCell.prototype.append_pyout = function (json, dynamic) {
var n = json.prompt_number || ' ';
var toinsert = this.create_output_area();
toinsert.find('div.prompt').addClass('output_prompt').html('Out[' + n + ']:');
this.append_mime_type(json, toinsert, dynamic);
this.element.find('div.output').append(toinsert);
// If we just output latex, typeset it.
if ((json.latex !== undefined) || (json.html !== undefined)) {
this.typeset();
};
};
CodeCell.prototype.append_pyerr = function (json) {
var tb = json.traceback;
if (tb !== undefined && tb.length > 0) {
var s = '';
var len = tb.length;
for (var i=0; i<len; i++) {
s = s + tb[i] + '\n';
}
s = s + '\n';
var toinsert = this.create_output_area();
this.append_text(s, toinsert);
this.element.find('div.output').append(toinsert);
};
};
CodeCell.prototype.append_stream = function (json) {
// temporary fix: if stream undefined (json file written prior to this patch),
// default to most likely stdout:
if (json.stream == undefined){
json.stream = 'stdout';
}
if (!utils.fixConsole(json.text)){
// fixConsole gives nothing (empty string, \r, etc.)
// so don't append any elements, which might add undesirable space
return;
}
var subclass = "output_"+json.stream;
if (this.outputs.length > 0){
// have at least one output to consider
var last = this.outputs[this.outputs.length-1];
if (last.output_type == 'stream' && json.stream == last.stream){
// latest output was in the same stream,
// so append directly into its pre tag
// escape ANSI & HTML specials:
var text = utils.fixConsole(json.text);
this.element.find('div.'+subclass).last().find('pre').append(text);
return;
}
}
// If we got here, attach a new div
var toinsert = this.create_output_area();
this.append_text(json.text, toinsert, "output_stream "+subclass);
this.element.find('div.output').append(toinsert);
};
CodeCell.prototype.append_display_data = function (json, dynamic) {
var toinsert = this.create_output_area();
this.append_mime_type(json, toinsert, dynamic);
this.element.find('div.output').append(toinsert);
// If we just output latex, typeset it.
if ( (json.latex !== undefined) || (json.html !== undefined) ) {
this.typeset();
};
};
CodeCell.prototype.append_mime_type = function (json, element, dynamic) {
if (json.javascript !== undefined && dynamic) {
this.append_javascript(json.javascript, element, dynamic);
} else if (json.html !== undefined) {
this.append_html(json.html, element);
} else if (json.latex !== undefined) {
this.append_latex(json.latex, element);
} else if (json.svg !== undefined) {
this.append_svg(json.svg, element);
} else if (json.png !== undefined) {
this.append_png(json.png, element);
} else if (json.jpeg !== undefined) {
this.append_jpeg(json.jpeg, element);
} else if (json.text !== undefined) {
this.append_text(json.text, element);
};
};
CodeCell.prototype.append_html = function (html, element) {
var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_html rendered_html");
toinsert.append(html);
element.append(toinsert);
};
CodeCell.prototype.append_javascript = function (js, container) {
// We just eval the JS code, element appears in the local scope.
var element = $("<div/>").addClass("box_flex1 output_subarea");
container.append(element);
// Div for js shouldn't be drawn, as it will add empty height to the area.
container.hide();
// If the Javascript appends content to `element` that should be drawn, then
// it must also call `container.show()`.
eval(js);
}
CodeCell.prototype.append_text = function (data, element, extra_class) {
var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_text");
// escape ANSI & HTML specials in plaintext:
data = utils.fixConsole(data);
if (extra_class){
toinsert.addClass(extra_class);
}
toinsert.append($("<pre/>").html(data));
element.append(toinsert);
};
CodeCell.prototype.append_svg = function (svg, element) {
var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_svg");
toinsert.append(svg);
element.append(toinsert);
};
CodeCell.prototype.append_png = function (png, element) {
var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_png");
toinsert.append($("<img/>").attr('src','data:image/png;base64,'+png));
element.append(toinsert);
};
CodeCell.prototype.append_jpeg = function (jpeg, element) {
var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_jpeg");
toinsert.append($("<img/>").attr('src','data:image/jpeg;base64,'+jpeg));
element.append(toinsert);
};
CodeCell.prototype.append_latex = function (latex, element) {
// This method cannot do the typesetting because the latex first has to
// be on the page.
var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_latex");
toinsert.append(latex);
element.append(toinsert);
};
CodeCell.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
);
};
CodeCell.prototype.clear_output_callback = function (stdout, stderr, other) {
var output_div = this.element.find("div.output");
if (stdout && stderr && other){
// clear all, no need for logic
output_div.html("");
this.outputs = [];
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();
}
// 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);
}
}
}
};
CodeCell.prototype.clear_input = function () {
this.code_mirror.setValue('');
};
CodeCell.prototype.flush_clear_timeout = function() {
var output_div = this.element.find('div.output');
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);
};
}
CodeCell.prototype.collapse = function () {
if (!this.collapsed) {
this.element.find('div.output').hide();
this.collapsed = true;
};
};
CodeCell.prototype.expand = function () {
if (this.collapsed) {
this.element.find('div.output').show();
this.collapsed = false;
};
};
CodeCell.prototype.toggle_output = function () {
if (this.collapsed) {
this.expand();
} else {
this.collapse();
};
};
CodeCell.prototype.set_input_prompt = function (number) {
this.input_prompt_number = number;
var ns = number || " ";
this.element.find('div.input_prompt').html('In [' + ns + ']:');
};
CodeCell.prototype.get_text = function () {
return this.code_mirror.getValue();
};
CodeCell.prototype.set_text = function (code) {
return this.code_mirror.setValue(code);
};
CodeCell.prototype.at_top = function () {
var cursor = this.code_mirror.getCursor();
if (cursor.line === 0) {
return true;
} else {
return false;
}
};
CodeCell.prototype.at_bottom = function () {
var cursor = this.code_mirror.getCursor();
if (cursor.line === (this.code_mirror.lineCount()-1)) {
return true;
} else {
return false;
}
};
CodeCell.prototype.fromJSON = function (data) {
if (data.cell_type === 'code') {
if (data.input !== undefined) {
this.set_text(data.input);
}
if (data.prompt_number !== undefined) {
this.set_input_prompt(data.prompt_number);
} else {
this.set_input_prompt();
};
var len = data.outputs.length;
for (var i=0; i<len; i++) {
// append with dynamic=false.
this.append_output(data.outputs[i], false);
};
if (data.collapsed !== undefined) {
if (data.collapsed) {
this.collapse();
} else {
this.expand();
};
};
};
};
CodeCell.prototype.toJSON = function () {
var data = {};
data.input = this.get_text();
data.cell_type = 'code';
if (this.input_prompt_number) {
data.prompt_number = this.input_prompt_number;
};
var outputs = [];
var len = this.outputs.length;
for (var i=0; i<len; i++) {
outputs[i] = this.outputs[i];
};
data.outputs = outputs;
data.language = 'python';
data.collapsed = this.collapsed;
return data;
};
IPython.CodeCell = CodeCell;
return IPython;
}(IPython));