##// END OF EJS Templates
Initial draft of HTML5/JS/CSS3 notebook.
Initial draft of HTML5/JS/CSS3 notebook.

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notebook.js
500 lines | 13.6 KiB | application/javascript | JavascriptLexer
var IPYTHON = {};
//============================================================================
// Notebook
//============================================================================
var Notebook = function (selector) {
this.element = $(selector);
this.element.data("notebook", this);
this.next_prompt_number = 1;
this.bind_events();
}
Notebook.prototype.bind_events = function () {
var that = this;
that.element.keydown(function (event) {
// console.log(event);
if (event.which == 38 && event.shiftKey) {
that.select_prev();
} else if (event.which == 40 && event.shiftKey) {
that.select_next();
}
});
};
// Cell indexing, retrieval, etc.
Notebook.prototype.cell_elements = function () {
return this.element.children("div.cell");
}
Notebook.prototype.ncells = function (cell) {
return this.cell_elements().length;
}
// TODO: we are often calling cells as cells()[i], which we should optimize
// to cells(i) or a new method.
Notebook.prototype.cells = function () {
return this.cell_elements().toArray().map(function (e) {
return $(e).data("cell");
});
}
Notebook.prototype.find_cell_index = function (cell) {
var result = null;
this.cell_elements().filter(function (index) {
if ($(this).data("cell") === cell) {
result = index;
};
});
return result;
};
Notebook.prototype.index_or_selected = function (index) {
return index || this.selected_index() || 0;
}
Notebook.prototype.select = function (index) {
if (index !== undefined && index >= 0 && index < this.ncells()) {
if (this.selected_index() !== null) {
this.selected_cell().unselect();
};
this.cells()[index].select();
};
return this;
};
Notebook.prototype.select_next = function () {
var index = this.selected_index();
if (index !== null && index >= 0 && (index+1) < this.ncells()) {
this.select(index+1);
};
return this;
};
Notebook.prototype.select_prev = function () {
var index = this.selected_index();
if (index !== null && index >= 0 && (index-1) < this.ncells()) {
this.select(index-1);
};
return this;
};
Notebook.prototype.selected_index = function () {
var result = null;
this.cell_elements().filter(function (index) {
if ($(this).data("cell").selected === true) {
result = index;
};
});
return result;
};
Notebook.prototype.selected_cell = function () {
return this.cell_elements().eq(this.selected_index()).data("cell");
}
// Cell insertion, deletion and moving.
Notebook.prototype.delete_cell = function (index) {
var i = index || this.selected_index();
if (i !== null && i >= 0 && i < this.ncells()) {
this.cell_elements().eq(i).remove();
if (i === (this.ncells())) {
this.select(i-1);
} else {
this.select(i);
};
};
return this;
};
Notebook.prototype.append_cell = function (cell) {
this.element.append(cell.element);
return this;
};
Notebook.prototype.insert_cell_after = function (cell, index) {
var ncells = this.ncells();
if (ncells === 0) {
this.append_cell(cell);
return this;
};
if (index >= 0 && index < ncells) {
this.cell_elements().eq(index).after(cell.element);
};
return this
};
Notebook.prototype.insert_cell_before = function (cell, index) {
var ncells = this.ncells();
if (ncells === 0) {
this.append_cell(cell);
return this;
};
if (index > 0 && index < ncells) {
this.cell_elements().eq(index).before(cell.element);
};
return this;
};
Notebook.prototype.move_cell_up = function (index) {
var i = index || this.selected_index();
if (i !== null && i < this.ncells() && i > 0) {
var pivot = this.cell_elements().eq(i-1);
var tomove = this.cell_elements().eq(i);
if (pivot !== null && tomove !== null) {
tomove.detach();
pivot.before(tomove);
};
};
return this;
}
Notebook.prototype.move_cell_down = function (index) {
var i = index || this.selected_index();
if (i !== null && i < (this.ncells()-1) && i >= 0) {
var pivot = this.cell_elements().eq(i+1)
var tomove = this.cell_elements().eq(i)
if (pivot !== null && tomove !== null) {
tomove.detach();
pivot.after(tomove);
};
};
return this;
}
Notebook.prototype.sort_cells = function () {
var ncells = this.ncells();
var swapped;
do {
swapped = false
for (var i=1; i<ncells; i++) {
current = this.cell_elements().eq(i).data("cell");
previous = this.cell_elements().eq(i-1).data("cell");
if (previous.input_prompt_number > current.input_prompt_number) {
this.move_cell_up(i);
swapped = true;
};
};
} while (swapped);
return this;
};
Notebook.prototype.insert_code_cell_before = function (index) {
// TODO: Bounds check for i
var i = this.index_or_selected(index);
var cell = new CodeCell(this);
cell.set_input_prompt(this.next_prompt_number);
this.next_prompt_number = this.next_prompt_number + 1;
this.insert_cell_before(cell, i);
this.select(this.find_cell_index(cell));
return this;
}
Notebook.prototype.insert_code_cell_after = function (index) {
// TODO: Bounds check for i
var i = this.index_or_selected(index);
var cell = new CodeCell(this);
cell.set_input_prompt(this.next_prompt_number);
this.next_prompt_number = this.next_prompt_number + 1;
this.insert_cell_after(cell, i);
this.select(this.find_cell_index(cell));
return this;
}
Notebook.prototype.insert_text_cell_before = function (index) {
// TODO: Bounds check for i
var i = this.index_or_selected(index);
var cell = new TextCell(this);
cell.config_mathjax();
this.insert_cell_before(cell, i);
this.select(this.find_cell_index(cell));
return this;
}
Notebook.prototype.insert_text_cell_after = function (index) {
// TODO: Bounds check for i
var i = this.index_or_selected(index);
var cell = new TextCell(this);
cell.config_mathjax();
this.insert_cell_after(cell, i);
this.select(this.find_cell_index(cell));
return this;
}
Notebook.prototype.text_to_code = function (index) {
// TODO: Bounds check for i
var i = this.index_or_selected(index);
var source_element = this.cell_elements().eq(i);
var source_cell = source_element.data("cell");
if (source_cell instanceof TextCell) {
this.insert_code_cell_after(i);
var target_cell = this.cells()[i+1];
var text = source_element.find("textarea.text_cell_input").val();
target_cell.element.find("textarea.input_area").val(text);
source_element.remove();
};
};
Notebook.prototype.code_to_text = function (index) {
// TODO: Bounds check for i
var i = this.index_or_selected(index);
var source_element = this.cell_elements().eq(i);
var source_cell = source_element.data("cell");
if (source_cell instanceof CodeCell) {
this.insert_text_cell_after(i);
var target_cell = this.cells()[i+1];
var text = source_element.find("textarea.input_area").val();
target_cell.element.find("textarea.text_cell_input").val(text);
target_cell.element.find("textarea.text_cell_input").html(text);
target_cell.element.find("div.text_cell_render").html(text);
source_element.remove();
};
};
// Cell collapsing
Notebook.prototype.collapse = function (index) {
var i = this.index_or_selected(index);
this.cells()[i].collapse();
}
Notebook.prototype.expand = function (index) {
var i = this.index_or_selected(index);
this.cells()[i].expand();
}
//============================================================================
// Cell
//============================================================================
var Cell = function (notebook) {
this.notebook = notebook;
this.selected = false;
this.element;
this.create_element();
if (this.element !== undefined) {
this.element.data("cell", this);
this.bind_events();
}
};
Cell.prototype.select = function () {
this.element.addClass('ui-widget-content ui-corner-all');
this.selected = true;
this.element.find('textarea').trigger('focusin');
};
Cell.prototype.unselect = function () {
this.element.removeClass('ui-widget-content ui-corner-all');
this.selected = false;
};
Cell.prototype.bind_events = function () {
var that = this;
var nb = that.notebook
that.element.click(function (event) {
if (that.selected === false) {
nb.select(nb.find_cell_index(that));
};
});
that.element.focusin(function (event) {
if (that.selected === false) {
nb.select(nb.find_cell_index(that));
};
});
};
// Subclasses must implement create_element.
Cell.prototype.create_element = function () {};
//============================================================================
// CodeCell
//============================================================================
var CodeCell = function (notebook) {
Cell.apply(this, arguments);
this.input_prompt_number = ' ';
this.output_prompt_number = ' ';
};
CodeCell.prototype = new Cell();
CodeCell.prototype.create_element = function () {
var cell = $('<div></div>').addClass('cell code_cell')
var input = $('<div></div>').addClass('input').append(
$('<div/>').addClass('prompt input_prompt')
).append(
$('<textarea/>').addClass('input_area').
attr('rows',1).
attr('cols',80).
attr('wrap','hard').
autoGrow()
);
var output = $('<div></div>').addClass('output').append(
$('<div/>').addClass('prompt output_prompt')
).append(
$('<div/>').addClass('output_area')
);
output.hide();
cell.append(input).append(output);
this.element = cell;
};
CodeCell.prototype.collapse = function () {
this.element.find('div.output').hide();
};
CodeCell.prototype.expand = function () {
this.element.find('div.output').show();
};
CodeCell.prototype.set_prompt = function (number) {
this.set_input_prompt(number);
this.set_output_prompt(number);
};
CodeCell.prototype.set_input_prompt = function (number) {
var n = number || ' ';
this.input_prompt_number = n
this.element.find('div.input_prompt').html('In&nbsp;[' + n + ']:');
};
CodeCell.prototype.set_output_prompt = function (number) {
var n = number || ' ';
this.output_prompt_number = n
this.element.find('div.output_prompt').html('Out[' + n + ']:');
};
//============================================================================
// TextCell
//============================================================================
var TextCell = function (notebook) {
Cell.apply(this, arguments);
};
TextCell.prototype = new Cell();
TextCell.prototype.create_element = function () {
var cell = $('<div></div').addClass('cell text_cell').
append(
$('<textarea>Type HTML/LaTex content here</textarea>').
addClass('text_cell_input').
attr('rows',1).
attr('cols',80).
autoGrow()
).append(
$('<div></div>').addClass('text_cell_render')
)
this.element = cell;
};
TextCell.prototype.config_mathjax = function () {
var text_cell = this.element;
var input = text_cell.find("textarea.text_cell_input");
var output = text_cell.find("div.text_cell_render");
text_cell.click(function () {
output.hide();
input.show().trigger('focus');
}).focusout(function () {
var text = input.val();
output.html(text)
input.html(text);
MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
input.hide();
output.show();
});
text_cell.trigger("focusout");
};
$(document).ready(function () {
MathJax.Hub.Config({
tex2jax: {
inlineMath: [ ['$','$'], ["\\(","\\)"] ],
displayMath: [ ['$$','$$'], ["\\[","\\]"] ],
}
});
$("ul#main_menu").wijmenu({animation:{animated: "slide", duration: 100, easing: null}});
IPYTHON.notebook = new Notebook('div.notebook');
IPYTHON.notebook.insert_code_cell_after();
$("#move_cell").buttonset();
$("#move_up").button("option", "icons", {primary:"ui-icon-arrowthick-1-n"});
$("#move_up").button("option", "text", false);
$("#move_up").click(function () {IPYTHON.notebook.move_cell_up();});
$("#move_down").button("option", "icons", {primary:"ui-icon-arrowthick-1-s"});
$("#move_down").button("option", "text", false);
$("#move_down").click(function () {IPYTHON.notebook.move_cell_down();});
$("#insert_delete").buttonset();
$("#insert_cell_before").click(function () {IPYTHON.notebook.insert_code_cell_before();});
$("#insert_cell_after").click(function () {IPYTHON.notebook.insert_code_cell_after();});
$("#delete_cell").button("option", "icons", {primary:"ui-icon-closethick"});
$("#delete_cell").button("option", "text", false);
$("#delete_cell").click(function () {IPYTHON.notebook.delete_cell();});
$("#cell_type").buttonset();
$("#to_code").click(function () {IPYTHON.notebook.text_to_code();});
$("#to_text").click(function () {IPYTHON.notebook.code_to_text();});
$("#sort").buttonset();
$("#sort_cells").click(function () {IPYTHON.notebook.sort_cells();});
});