/
deck.coder.js
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/
deck.coder.js
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/*!
Copyright (c) 2011 Cykod LLC
Dual licensed under the MIT license and the GPL license
*/
/*
This module adds a code editor that shows up in individual slides
*/
(function($, deck, window, undefined) {
var $d = $(document),
$window = $(window);
function unsanitize(str) {
return str.replace(/SCRIPTEND/,'</s' + 'cript>').replace(/SCRIPT/g,'<script>').replace(/</g,'<').replace(/>/g,'>');
}
function runCode(element,template) {
iframe = document.createElement("IFRAME");
iframe.style.width = ($(element).parent().width()-2) + "px";
iframe.style.height = ($(element).parent().height()-2) + "px";
iframe.style.overflow = 'auto';
iframe.style.border ="none";
var dest = $(element).attr('data-target');
var destination = $("#" + dest );
$(destination).html("").append(iframe);
var editor = $(element).data('editor');
var code = editor.getValue();
if($(element).attr('data-save')) {
localStorage[$(element).attr('data-save')] = code;
}
var tmpl = $(template ? "#" + template : "#coderdeck-default").html();
code = "<!DOCTYPE HTML>" + unsanitize(tmpl).replace(/CODE/,code);
writeIFrame(iframe,code);
}
function writeIFrame(iframe,code) {
iframe = (iframe.contentWindow) ? iframe.contentWindow : (iframe.contentDocument.document) ? iframe.contentDocument.document : iframe.contentDocument;
iframe.document.open();
iframe.document.write(code);
iframe.document.close();
}
// Prepare a slide to give unique id to code editor, create run destinations
// and match code editors with solutions and destinations
function prepareSlide(idx,$el) {
var slide = $($el);
var $element =slide.find(".coder-editor");
var solution = slide.find("script[type=coder-solution]")[0]
var config = {
isFull: $element.hasClass("coder-editor-full"),
isInstant: $element.hasClass('coder-editor-instant'),
isSolution: !!solution,
isSaving: $element.attr('data-save'),
language: $element.attr('data-language')
};
var fullClass = config.isFull ? " coder-wrapper-full" : " coder-wrapper-split";
slide.find(".coder-editor").attr({
'id': 'editor-' + idx,
'data-target' : 'destination-' + idx
}).wrapAll("<div class='coder-wrapper" + fullClass + "'><div class='coder-editor-wrapper' id='wrapper-" + idx + "'></div></div>").css('position','static');
$("<div class='coder-destination' id='destination-" + idx + "'></div>").insertAfter("#wrapper-"+idx);
if(solution) {
$(solution).attr({ 'id' : 'solution-' + idx });
slide.find(".coder-editor").attr({ 'data-solution' : 'solution-' + idx });
}
$element.data("config", config);
}
function loadFromLocalStorage($element,config) {
if(localStorage[$element.attr('data-save')]) {
config.html = localStorage[$element.attr('data-save')];
}
}
function setupCodeEditor(currentSlide,$container,$element,$destination,config) {
var editorOptions = {
lineNumbers: true,
onFocus: function() { editorFocused = true; },
onBlur: function() { editorFocused = false; },
mode: config.language || "htmlmixed"
};
if(config.isInstant) {
$destination.show();
var changeTimer = null;
editorOptions['onChange'] = function() {
clearTimeout(changeTimer);
changeTimer = setTimeout(function() {
runCode($element,$element.attr('data-coder-template'));
}, 50);
};
}
var editor = CodeMirror.fromTextArea($element[0], editorOptions );
$element.data('editor',editor);
$(editor.getScrollerElement()).height($(currentSlide).height() - $container.position().top - 80);
$container.addClass('coderEditor');
$destination.height($(currentSlide).height() - $container.position().top - 80);
editor.setValue(config.html);
return editor;
}
function createBackbutton($wrapper,callback) {
return $("<button>Back</button>").insertBefore($wrapper).click(callback).hide();
}
function createSolution($wrapper,callback) {
return $("<button>Solution</button>").insertBefore($wrapper).click(callback);
}
function createRunButton(config,$wrapper,callback) {
var buttonName = config.isSaving ? "Run/Save" : "Run";
return $("<button>" + buttonName + "</button>").insertBefore($wrapper).click(callback);
}
function resizeEditors(currentSlide,$container) {
var $element = $container.find('.coder-editor');
var $destination = $("#" + $element.attr('data-target'));
var editor = $element.data("editor");
var height = $(currentSlide).height() - $container.position().top - 80;
$(editor.getScrollerElement()).height(height);
$destination.height(height);
}
function generateCodeSlide($container,currentSlide) {
var $element = $container.find('.coder-editor');
var $wrapper = $container.find('.coder-editor-wrapper');
var $destination = $("#" + $element.attr('data-target'));
var config = $element.data("config");
config.html = unsanitize($element.html());
if(config.isSaving) { loadFromLocalStorage($element,config); }
$element.css('visibility','visible');
var editor = setupCodeEditor(currentSlide,$container,$element,$destination,config);
var $backButton = null;
if(!config.isInstant) {
createRunButton(config,$wrapper, function() {
if(config.isFull) {
$backButton.show();
$wrapper.hide();
}
$destination.show();
runCode($element,$element.attr('data-coder-template'));
});
}
if(config.isFull) {
$backButton = createBackbutton($wrapper,function() {
$destination.toggle();
$wrapper.toggle();
});
}
if(config.isSolution) {
createSolution($wrapper,function() {
var solution = $element.attr('data-solution');
editor.setValue(unsanitize($("#" + solution).html()));
});
}
}
$d.bind('deck.init',function() {
$("a").attr('target','_blank');
$.each($[deck]('getSlides'), prepareSlide);
});
$d.bind('deck.change',function(e,from,to) {
var current =$[deck]('getSlide', to);
current.find(".coder-wrapper").each(function() {
var $container = $(this);
if(!$container.hasClass('coderEditor')) {
generateCodeSlide($container,current);
}
resizeEditors(current,$container);
});
});
})(jQuery,'deck',this);