//============================================================================
// TextCell
//============================================================================
var IPython = (function (IPython) {
var TextCell = function (notebook) {
IPython.Cell.apply(this, arguments);
this.placeholder = "Type HTML and LaTeX: $\\alpha^2$"
this.rendered = false;
};
TextCell.prototype = new IPython.Cell();
TextCell.prototype.create_element = function () {
var cell = $("
").addClass('cell text_cell border-box-sizing').
append(
$("
").
addClass('text_cell_input monospace-font').
attr('rows',1).
attr('cols',80).
autogrow()
).append(
// The tabindex=-1 makes this div focusable.
$('
').addClass('text_cell_render').attr('tabindex','-1')
)
this.element = cell;
};
TextCell.prototype.bind_events = function () {
IPython.Cell.prototype.bind_events.apply(this);
var that = this;
this.element.keydown(function (event) {
if (event.which === 13) {
if (that.rendered) {
that.edit();
event.preventDefault();
};
};
});
};
TextCell.prototype.select = function () {
IPython.Cell.prototype.select.apply(this);
var output = this.element.find("div.text_cell_render");
output.trigger('focus');
};
TextCell.prototype.edit = function () {
if (this.rendered === true) {
var text_cell = this.element;
var input = text_cell.find("textarea.text_cell_input");
var output = text_cell.find("div.text_cell_render");
output.hide();
input.show().trigger('focus');
this.rendered = false;
};
};
TextCell.prototype.render = function () {
if (this.rendered === false) {
var text_cell = this.element;
var input = text_cell.find("textarea.text_cell_input");
var output = text_cell.find("div.text_cell_render");
var text = input.val();
if (text === "") {
text = this.placeholder;
input.val(text);
};
output.html(text)
input.html(text);
MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
input.hide();
output.show();
this.rendered = true;
};
};
TextCell.prototype.config_mathjax = function () {
var text_cell = this.element;
var that = this;
text_cell.click(function () {
that.edit();
}).focusout(function () {
that.render();
});
text_cell.trigger("focusout");
};
TextCell.prototype.get_text = function() {
return this.element.find("textarea.text_cell_input").val();
};
TextCell.prototype.set_text = function(text) {
this.element.find("textarea.text_cell_input").val(text);
this.element.find("textarea.text_cell_input").html(text);
this.element.find("div.text_cell_render").html(text);
};
TextCell.prototype.at_top = function () {
if (this.rendered) {
return true;
} else {
return false;
}
};
TextCell.prototype.at_bottom = function () {
if (this.rendered) {
return true;
} else {
return false;
}
};
TextCell.prototype.fromJSON = function (data) {
if (data.cell_type === 'text') {
this.set_text(data.text);
this.grow(this.element.find("textarea.text_cell_input"));
};
}
TextCell.prototype.toJSON = function () {
return {
cell_type : 'text',
text : this.get_text(),
};
};
IPython.TextCell = TextCell;
return IPython;
}(IPython));