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var $editor

$(document).on('ContentLoad', function(){onEditorLoad()});

$(document).on('click','#config_template_submit', function(){
if($('.diffMode').exists()){
set_edit_mode( $(".template_text"));
}
})

$(document).on('change', '.template_file', function(e){
if ($('.template_file').val() != '') upload_file(e);
})

$(document).on('change','#keybinding', function(){
set_keybinding()
})

$(document).keyup(function(e) {
if (e.keyCode == 27) { // esc
exit_fullscreen();
}
});

function onEditorLoad(){
var template_text = $(".template_text");
if ($.browser && $.browser.msie && $.browser.version.slice(0,1) < 10) {
$('.subnav').hide();
if ($('.diffMode').exists()) {
IE_diff_mode(template_text);
}
}else{
if (template_text.exists()){
create_editor(template_text)
}

if ($('.diffMode').exists()) {
set_diff_mode(template_text);
} else {
set_edit_mode(template_text);
}
}
}

function set_keybinding(){
var vim = require("ace/keyboard/vim").handler;
var emacs = require("ace/keyboard/emacs").handler;
var keybindings = [
null, // Null = use "default" keymapping
vim,
emacs];

$editor.setKeyboardHandler(keybindings[$("#keybinding")[0].selectedIndex]);
}

function upload_file(evt){
if(window.File && window.FileList && window.FileReader)
{
if (!confirm(_("You are about to override the editor content, are you sure?"))) {
$('.template_file').val('');
return;
}

var files = evt.target.files; // files is a FileList object
for (var i = 0, f; f = files[i]; i++) {
var reader = new FileReader();
// Closure to capture the file information.
reader.onloadend = function(evt) {
if (evt.target.readyState == FileReader.DONE) { // DONE == 2
$('#new').text(( evt.target.result));
set_edit_mode($('.template_text'));
}
};
// Read in the file as text.
reader.readAsText(f);
$('.template_file').val("");
}
}else{
// Browser can't read the file content,
// the file will be uploaded to the server on form submit.
// Set editor to read only mode
$editor.setTheme("ace/theme/clouds");
$editor.setReadOnly(true);
}
}

function snippet_changed(item){
var checked = !!$(item).attr('checked');
$('#kind_selector').toggle(!checked);
$('#snippet_message').toggle(checked);
$('#association').toggle(!checked);
}

function create_editor(item) {
item.parent().prepend("<div id='editor1'></div>");

$("#editor1")
.css("position","relative")
.height(item.height() || '360')
.width(item.width()+10)
.css('top', '-20px');
item.hide();

$editor = ace.edit("editor1");
$editor.setShowPrintMargin(false);
$editor.renderer.setShowGutter(false);
}

function set_fullscreen(){
$('#main').append($("#editor1"));
$("#editor1")
.height($(window).height()-80)
.width($('#content').width())
.addClass('container');
$('#content').hide();
$('.navbar').addClass('hidden');
$('.logo-bar').addClass('hidden');
$editor.resize();
$('#main').append($('.exit-fullscreen'));
$('.exit-fullscreen').removeClass('hidden');
$(window).scrollTop(0);
}

function exit_fullscreen(){
$(".template_text").show();
$('#content').show();
$('.navbar').removeClass('hidden');
$('.logo-bar').removeClass('hidden');
$(".template_text").parent().prepend($("#editor1"))
$("#editor1")
.height($(".template_text").height() || '360')
.width($(".template_text").width()+10)
$(".template_text").hide();
$editor.resize();
$('.exit-fullscreen').addClass('hidden');
}

function set_preview(){
if($('.template_text').hasClass('diffMode')) return;
$('.template_text').addClass('diffMode');
$('#new').html( $editor.getSession().getValue());
set_diff_mode($('.template_text'))
}

function set_code(){
$('.template_text').removeClass('diffMode');
set_edit_mode($('.template_text'));
}

function set_edit_mode(item){
if( $editor == undefined) return;
$editor.setTheme("ace/theme/twilight");
$editor.setReadOnly(false);
var session = $editor.getSession();
session.setMode("ace/mode/ruby");

session.setValue($('#new').text());
session.on('change', function(){
item.text(session.getValue());
});
}

function set_diff_mode(item){
$editor.setTheme("ace/theme/clouds");
$editor.setReadOnly(true);
var session = $editor.getSession();
session.setMode("ace/mode/diff");
var patch = JsDiff.createPatch(item.attr('data-file-name'), $('#old').text(), $('#new').text());
patch = patch.replace(/^(.*\n){0,4}/,'');
if (patch.length == 0)
patch = _("No changes")

$(session).off('change');
session.setValue(patch);
}

function submit_code() {
if($('.template_text').hasClass('diffMode')) {
set_code();
}
}

function IE_diff_mode(item){
var patch = JsDiff.createPatch(item.attr('data-file-name'), $('#old').contents().text() , $('#new').contents().text());
item.val(patch);
item.attr('readOnly', true);
}

function revert_template(item){
if (!confirm(_("You are about to override the editor content with a previous version, are you sure?"))) return;

var version = $(item).attr('data-version');
var url = $(item).attr('data-url');
$.ajax({
type: 'get',
url: url,
data:'version=' + version,
complete: function(res) {
$('#primary_tab').click();
if ($.browser.msie && $.browser.version.slice(0,1) < 10){
$('.template_text').val(res.responseText);
} else {
$('#new').text(res.responseText);
set_edit_mode($('.template_text'));
}
var time = $(item).closest('div.row').find('h6 span').attr('data-original-title');
$('#config_template_audit_comment').text(Jed.sprintf(_("Revert to revision from: %s"), time))
}
})
}
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