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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),
savedGistData = {};
function unsanitize(str) {
return addScript(str).replace(/</g,'<').replace(/>/g,'>');
}
function addScript(str) {
return str.replace(/SCRIPTEND/g,'</s' + 'cript>').replace(/SCRIPT/g,'<script>')
}
function runCode(element,template) {
iframe = document.createElement("IFRAME");
var dest = $(element).attr('data-target');
var destination = $("#" + dest );
iframe.className = "coder-iframe";
iframe.style.width = (destination.parent().width()-2) + "px";
iframe.style.height = (destination.parent().height()-2) + "px";
iframe.style.overflow = 'auto';
iframe.style.border ="none";
$(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 = $(template ? "#" + template : "#coderdeck-default").html();
code = "<!DOCTYPE HTML>" + addScript(tmpl).replace(/CODE/,code);
writeIFrame(iframe,code);
}
function writeIFrame(iframe,code) {
iframe = (iframe.contentWindow) ? iframe.contentWindow : (iframe.contentDocument.document) ? iframe.contentDocument.document : iframe.contentDocument;
iframe.document.open();
iframe.document.write(code);
iframe.document.close();
}
// Prepare a slide to give unique id to code editor, create run destinations
// and match code editors with solutions and destinations
function prepareSlide(idx,$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')
};
slide.attr('data-slide-id', idx);
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 });
}
$element.data("config", config);
// If we're showing the current slide,
// launch the editors/etc
if($.deck('getSlide')[0] == $el[0]) {
displayCodeSlide($el);
}
}
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() - $container.position().top - 80);
editor.setValue(config.html);
return editor;
}
function createButtonWrapper($wrapper) {
return $("<div class='coder-buttons'>").insertBefore($wrapper);
}
function createBackbutton($wrapper,callback) {
return $("<button>Back</button>").appendTo($wrapper).click(callback).hide();
}
function createSolution($wrapper,callback) {
return $("<button>Solution</button>").appendTo($wrapper).click(callback);
}
function createRunButton(config,$wrapper,callback) {
var buttonName = config.isSaving ? "Run/Save" : "Run";
return $("<button>" + buttonName + "</button>").appendTo($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;
var $buttonWrapper = createButtonWrapper($wrapper);
if(!config.isInstant) {
createRunButton(config,$buttonWrapper, function() {
if(config.isFull) {
$backButton.show();
$wrapper.hide();
}
$destination.show();
runCode($element,$element.attr('data-coder-template'));
});
}
if(config.isFull) {
$backButton = createBackbutton($buttonWrapper,function() {
$destination.toggle();
$wrapper.toggle();
});
}
if(config.isSolution) {
createSolution($buttonWrapper,function() {
var solution = $element.attr('data-solution');
editor.setValue(unsanitize($("#" + solution).html()));
});
}
}
function killDestination(slide) {
slide.find(".coder-wrapper").each(function() {
var $container = $(this);
if($container.hasClass('coderEditor')) {
var $element = $container.find('.coder-editor');
var $wrapper = $container.find('.coder-editor-wrapper');
var $destination = $("#" + $element.attr('data-target'));
$wrapper.show();
$destination.html("").hide();
}
});
}
function getGist(gistId) {
url = 'https://api.github.com/gists/' + gistId + '?callback=?';
$.getJSON(url, function(gistData) {
var $gists = savedGistData[gistId],
length = $gists.length;
while(length--){
var $gist = $($gists[length]);
updateGistSlide( $gist, gistData );
}
});
}
function updateGistSlide($gist, gistData) {
var content = gistData.data.files["gistfile1.txt"].content,
id = gistData.data.id,
slide = $gist.parents('.slide'),
type = $gist.attr('type'),
classes = $gist.attr('data-gist-classes'),
template = $gist.attr('data-coder-template') || '',
language = $gist.attr('data-language') || '',
save = $gist.attr('data-save') || '';
if(type === 'text/coderdeck') {
$el = $('<script />')
.attr('id', $gist.attr('id'))
.attr('type', type);
}
else {
$el = $('<textarea />');
}
$el.addClass(classes)
.attr('data-coder-template', template)
.attr('data-language', language)
.attr('data-save', save)
.text(content)
.find("a")
.attr('target','_blank')
.end();
$gist.after($el).remove();
prepareSlide(slide.attr('data-slide-id'), slide);
}
function displayCodeSlide(slide) {
slide.find(".coder-wrapper").each(function() {
var $container = $(this);
if(!$container.hasClass('coderEditor')) {
generateCodeSlide($container,slide);
}
resizeEditors(slide,$container);
});
}
$d.bind('deck.init',function() {
$('.gist[data-gist-id]').each(function(idx) {
var $gist = $(this);
var gistId = $gist.attr('data-gist-id');
savedGistData[gistId] = savedGistData[gistId] || [];
savedGistData[gistId].push($gist);
});
for(var id in savedGistData){
getGist(id);
}
//$("a").attr('target','_blank'); //removed by Pearl Chen - Oct 8
$.each($[deck]('getSlides'), prepareSlide);
prettyPrint();
});
$d.bind('deck.change',function(e,from,to) {
var last = $[deck]('getSlide',from);
if(last) { killDestination(last); }
var current =$[deck]('getSlide', to);
displayCodeSlide(current);
});
})(jQuery,'deck',this);
/* *********** Added by Pearl **********
* Incorporate this into final framework
*/
function showHint(answerContainerId) {
var preTags = document.getElementById(answerContainerId).style.display = "block";
}
