##// END OF EJS Templates
be smarter for context completion...
be smarter for context completion Completion source based on context is smarter and use codemirror token mecanisme to propose completions, instead of just plitting text at whitespace and before dots.

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codecell.js
681 lines | 25.3 KiB | application/javascript | JavascriptLexer
//----------------------------------------------------------------------------
// Copyright (C) 2008-2011 The IPython Development Team
//
// Distributed under the terms of the BSD License. The full license is in
// the file COPYING, distributed as part of this software.
//----------------------------------------------------------------------------
//============================================================================
// 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
// And give it the function to call to get the completion list
var that = this;
this.completer = new IPython.Completer(this.code_mirror,function(callback){that.requestCompletion(callback)});
};
//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);
};
// As you type completer
// this should be called by the completer, that in return will
// be reclled by finish_completing
CodeCell.prototype.requestCompletion= function(callback)
{
this._compcallback = callback;
var cur = this.code_mirror.getCursor();
var pre_cursor = this.code_mirror.getRange({line:cur.line,ch:0},cur);
pre_cursor.trim();
// Autocomplete the current line.
var line = this.code_mirror.getLine(cur.line);
// one could fork here and directly call finish completing
// if kernel is busy
IPython.notebook.complete_cell(this, line, cur.ch);
}
// 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) {
// let's build a function that wrap all that stuff into what is needed for the
// new completer:
//
var cur = this.code_mirror.getCursor();
var res = CodeMirror.contextHint(this.code_mirror);
// append the introspection result, in order, at
// at the beginning of the table and compute the replacement rance
// from current cursor positon and matched_text length.
for(var i= matches.length-1; i>=0 ;--i)
{
res.unshift(
{
str : matches[i],
type : "introspection",
from : {line: cur.line, ch: cur.ch-matched_text.length},
to : {line: cur.line, ch: cur.ch}
}
)
}
this._compcallback(res);
};
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 || "&nbsp;";
this.element.find('div.input_prompt').html('In&nbsp;[' + 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));