I'm trying to load a new design template into optimizely.
The CMS stores the new templates in alternate URLs. The files are loaded in the section of the page.
The original templates are loaded as follows:
var name1 = /url1/
var name2 = /url2/
And we need to change the urls that go with the variables to:
var name1 = /url3/
var name2 = /url4/
I'm guessing we might have to use the append function, similar to this (this is for adding a new CSS stylesheet to a page):
$("head").append("");
But I can't seem to make it work in optmizely.
You can set variables on the window and then reference them like so:
/* _optimizely_evaluate=force */
window.foo = 'bar'; // in optimizely
/* _optimizely_evaluate=safe */
// later in your code
var name = window.foo || 'baz';
Remember though anything not matching the $(selector).action() template will wait till domReady unless you also use the force comments.
Related
Kendo UI 2015.2.805 Kendo UI Editor for Jacascript
I want to extend the kendo ui editor by adding a custom tool that will convert a user selected block that spans two or more paragraphs into block of single spaced text. This can be done by locating all interior p tags and converting them into br tags, taking care not to change the first or last tag.
My problem is working with the range object.
Getting the range is easy:
var range = editor.getRange();
The range object has a start and end container, and a start and end offset (within that container). I can access the text (without markup)
console.log(range.toString());
Oddly, other examples I have seen, including working examples, show that
console.log(range);
will dump the text, however that does not work in my project, I just get the word 'Range', which is the type of the object. This concerns me.
However, all I really need however is a start and end offset in the editor's markup (editor.value()) then I can locate and change the p's to br's.
I've read the telerik documentation and the referenced quirksmode site's explanation of html ranges, and while informative nothing shows how to locate the range withing the text (which seems pretty basic to me).
I suspect I'm overlooking something simple.
Given a range object how can I locate the start and end offset within the editor's content?
EDIT: After additional research it appears much more complex than I anticipated. It seems I must deal with the range and/or selection objects rather than directly with the editor content. Smarter minds than I came up with the range object for reasons I cannot fathom.
Here is what I have so far:
var range = letterEditor.editor.getRange();
var divSelection;
divSelection = range.cloneRange();
//cloning may be needless extra work...
//here manipulate the divSelection to how I want it.
//divSeletion is a range, not sure how to manipulate it
var sel = letterEditor.editor.getSelection()
sel.removeAllRanges();
sel.addRange(divSelection);
EDIT 2:
Based on Tim Down's Solution I came up with this simple test:
var html;
var sel = letterEditor.editor.getSelection();
if (sel.rangeCount) {
var container = document.createElement("div");
for (var i = 0, len = sel.rangeCount; i < len; ++i) {
container.appendChild(sel.getRangeAt(i).cloneContents());
}
html = container.innerHTML;
}
html = html.replace("</p><p>", "<br/>")
var range = letterEditor.editor.getRange();
range.deleteContents();
var div = document.createElement("div");
div.innerHTML = html;
var frag = document.createDocumentFragment(), child;
while ((child = div.firstChild)) {
frag.appendChild(child);
}
range.insertNode(frag);
The first part, getting the html selection works fine, the second part also works however the editor inserts tags around all lines so the result is incorrect; extra lines including fragments of the selection.
The editor supports a view html popup which shows the editor content as html and it allows for editing the html. If I change the targeted p tags to br's I get the desired result. (The editor does support br as a default line feed vs p, but I want p's most of the time). That I can edit the html with the html viewer tool lets me know this is possible, I just need identify the selection start and end in the editor content, then a simple textual replacement via regex on the editor value would do the trick.
Edit 3:
Poking around kendo.all.max.js I discovered that pressing shift+enter creates a br instead of a p tag for the line feed. I was going to extend it to do just that as a workaround for the single-space tool. I would still like a solution to this if anyone knows, but for now I will instruct users to shift-enter for single spaced blocks of text.
This will accomplish it. Uses Tim Down's code to get html. RegEx could probably be made more efficient. 'Trick' is using split = false in insertHtml.
var sel = letterEditor.editor.getSelection();
if (sel.rangeCount) {
var container = document.createElement("div");
for (var i = 0, len = sel.rangeCount; i < len; ++i) {
container.appendChild(sel.getRangeAt(i).cloneContents());
}
var block = container.innerHTML;
var rgx = new RegExp(/<br class="k-br">/gi);
block = block.replace(rgx, "");
rgx = new RegExp(/<\/p><p>/gi);
block = block.replace(rgx, "<br/>");
rgx = new RegExp(/<\/p>|<p>/gi);
block = block.replace(rgx, "");
letterEditor.editor.exec("insertHtml", { html: block, split: false });
}
I'm using CKEditor and I want to indent just the first line of the paragraph. What I've done before is click "Source" and edit the <p> style to include text-indent:12.7mm;, but when I click "Source" again to go back to the normal editor, my changes are gone and I have no idea why.
My preference would be to create a custom toolbar button, but I'm not sure how to do so or where to edit so that clicking a custom button would edit the <p> with the style attribute I want it to have.
Depending on which version of CKE you use, your changes most likely disappear because ether the style attribute or the text-indent style is not allowed in the content. This is due to the Allowed Content Filter feature of CKEditor, read more here: http://docs.ckeditor.com/#!/guide/dev_advanced_content_filter
Like Ervald said in the comments, you can also use CSS to do this without adding the code manually - however, your targeting options are limited. Either you have to target all paragraphs or add an id or class property to your paragraph(s) and target that. Or if you use a selector like :first-child you are restricted to always having the first element indented only (which might be what you want, I don't know :D).
To use CSS like that, you have to add the relevant code to contents.css, which is the CSS file used in the Editor contents and also you have to include it wherever you output the Editor contents.
In my opinion the best solution would indeed be making a plugin that places an icon on the toolbar and that button, when clicked, would add or remove a class like "indentMePlease" to the currently active paragraph. Developing said plugin is quite simple and well documented, see the excellent example at http://docs.ckeditor.com/#!/guide/plugin_sdk_sample_1 - if you need more info or have questions about that, ask in the comments :)
If you do do that, you again need to add the "indentMePlease" style implementation in contents.css and the output page.
I've got a way to indent the first line without using style, because I'm using iReport to generate automatic reports. Jasper does not understand styles. So I assign by jQuery an onkeydown method to the main iframe of CKEditor 4.6 and I check the TAB and Shift key to do and undo the first line indentation.
// TAB
$(document).ready(function(){
startTab();
});
function startTab() {
setTimeout(function(){
var $iframe_document;
var $iframe;
$iframe_document = $('.cke_wysiwyg_frame').contents();
$iframe = $iframe_document.find('body');
$iframe.keydown(function(e){
event_onkeydown(e);
});
},300);
}
function event_onkeydown(event){
if(event.keyCode===9) { // key tab
event.preventDefault();
setTimeout(function(){
var editor = CKEDITOR.instances['editor1'], //get your CKEDITOR instance here
range = editor.getSelection().getRanges()[0],
startNode = range.startContainer,
element = startNode.$,
parent;
if(element.parentNode.tagName != 'BODY') // If you take an inner element of the paragraph, get the parentNode (P)
parent = element.parentNode;
else // If it takes BODY as parentNode, it updates the inner element
parent = element;
if(event.shiftKey) { // reverse tab
var res = parent.innerHTML.toString().split(' ');
var aux = [];
var count_space = 0;
for(var i=0;i<res.length;i++) {
// console.log(res[i]);
if(res[i] == "")
count_space++;
if(count_space > 8 || res[i] != "") {
if(!count_space > 8)
count_space = 9;
aux.push(res[i]);
}
}
parent.innerHTML = aux.join(' ');
}
else { // tab
var spaces = " ";
parent.innerHTML = spaces + parent.innerHTML;
}
},200);
}
}
I tried to set the includeDefaultValues:false every time I create an object, however, the save string for an image is still:
[{"type":"image","originX":"center","originY":"center","left":396.16,"top":108.16,"width":2475,"height":675,"fill":"rgb(0,0,0)","overlayFill":null,"stroke":null,"strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":0.32,"scaleY":0.32,"angle":0,"flipX":false,"flipY":false,"opacity":1,"selectable":true,"hasControls":true,"hasBorders":true,"hasRotatingPoint":true,"transparentCorners":true,"perPixelTargetFind":false,"shadow":null,"visible":true,"clipTo":null,"src":"http://localhost/fabricjstest/designs/images/ds130814014834.png?t=1376502517","filters":[]}],"background":"#FFF"}
I am pretty sure most of those are default values, so how can I get it to work?
Maybe I am saving wrong, so this is my save code:
var obj = canvas.toObject();
var jsn = JSON.stringify(obj);
alert(jsn);
Here is the version directly from the js file: var fabric=fabric||{version:"1.2.9"};
So the question is: How do I disable default values.
How can I get information about the states of styles present on the toolbar, at the current cursor position.
The documentation is completely silent on this issue. As far as I can tell from digging into the source code, CKEditor doesn't keep an internal log of what the styles are at the current position. It simply recalculates them on an as-needed basis, namely whenever it needs to add new styles to a selection.
Please keep in mind that CKEditor is actually building and modifying an entire DOM tree, and so the styles it applies cascade down the nodes. It appears that the only way you can pull the style information is to traverse up the DOM tree from your current cursor position, recording the style information from each ancestor until you reach the body node of the editor.
The following code should get you started traversing up the ancestor nodes:
//Or however you get your current editor
var editor = CKEDITOR.currentInstance;
//This will pull the minimum ancestor that encompasses the entire selection,
//so if you just want to use the cursor it will give you the direct parent
//node that the cursor is inside
var node = editor.getSelection().getCommonAncestor();
//This is all the ancestors, up to the document root
var ancestors = node.getParents();
//This is the editors body node; you don't want to go past this
var editor_body = editor.getBody();
var body_ancestors = editor_body.getParents();
//The ancestors list descends from the root node, whereas we want
//to ascend towards the root
for (var i = ancestors.length - 1; i >= 0; i--;) {
//Pull the node
var a = ancestors[i];
//You've hit the body node, break out of the loop
if (a.getText() == editor_body.getText()) break;
//This is a node between the cursor's node and the editor body,
//pull your styling information from the node here
}
Thanks to the customizability of CKEditors style interface, there isn't a single set of styles that can be checked for, nor do they follow the same form (for instance, some will be CSS styles, while others will be span elements with a particular class).
My suggestion is to check for just those styles which you actually care about, and ignore the rest. It'll make the code much simpler.
Here is another way (based on a few attached links).
You can get the current element position by editor.getSelection().getStartElement() - (editor is CKEDITOR.instances.%the editor instance%.
Now, you can then wrap the actual element for jquery (or use the jquery adapter..):
$(editor.getSelection().getStartElement().$)
This will give you an access to use the following plugin which resolves all the styles of a given element (both inline and inherited):
/*
* getStyleObject Plugin for jQuery JavaScript Library
* From: http://upshots.org/?p=112
*
* Copyright: Unknown, see source link
* Plugin version by Dakota Schneider (http://hackthetruth.org)
*/
(function($){
$.fn.getStyleObject = function(){
var dom = this.get(0);
var style;
var returns = {};
if(window.getComputedStyle){
var camelize = function(a,b){
return b.toUpperCase();
}
style = window.getComputedStyle(dom, null);
for(var i=0;i<style.length;i++){
var prop = style[i];
var camel = prop.replace(/\-([a-z])/g, camelize);
var val = style.getPropertyValue(prop);
returns[camel] = val;
}
return returns;
}
if(dom.currentStyle){
style = dom.currentStyle;
for(var prop in style){
returns[prop] = style[prop];
}
return returns;
}
return this.css();
}
})(jQuery);
(Taken from: jQuery CSS plugin that returns computed style of element to pseudo clone that element?)
All that is left to do is:
$(editor.getSelection().getStartElement().$).getStyleObject()
Now you can check for any style asigned to the element.
Another small tip will be - what are the styles for the current cursor position, every time the position or styles are changed:
In which case you can use attachStyleStateChange callback (which is pretty atrophied by itself since is can only return boolean indication for weather or not a certain style is applied to current position).
The good thing about it is - callback is being recieved when ever the style state is changed - that is - whenever the cursor position is moved to a position with different style attributes - Any different attribute and not just the attribute the listener was ment to verify (Taken from the API http://docs.cksource.com/ckeditor_api/symbols/CKEDITOR.editor.html#attachStyleStateChange)
Combining everything together to figure out what is the current applied styles on the current cursor position Every time something is changed:
editor.on('instanceReady', function () {
//editor.setReadOnly(true);
var styleBold = new CKEDITOR.style(CKEDITOR.config.coreStyles_bold);
editor.attachStyleStateChange(styleBold, function (state) {
var currentCursorStyles = $(editor.getSelection().getStartElement().$).getStyleObject();
// For instance, the font-family is:
var fontFamily = currentCursorStyles.fontFamily;
});
});
The page i have is very simple, but all of the links are loaded with ajax, what i am wondering is there anyway to load an external script once one of the links is clicked, but make sure that the script is only loaded once? Basically just for the sake of performance.
You can load an external script by creating a script element and appending it to head:
var script=$("<script>");
script.attr("type", "text/javascript");
script.attr("src", "some_external_script.js");
script.appendTo("head");
You can use a simple variable to make sure it's only included once.
var addedExternalScript=false;
// ...somewhere else where loadedExternalScript is still in scope...
if(!addedExternalScript) {
// load the script
}
// script is in the document
Note that having the script element in the document won't necessarily mean it's loaded. You may need to bind to the load event if you want to know when the script has loaded.
Is this code helpful to you?
var s = document.createElement('script');
s.type = 'text/javascript';
s.async = true;
s.src = 'script.js';
(document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(s);
I used this code before, and it worked:
var t=document;
var o=t.createElement('script');
o=t.standardCreateElement('script');
o.setAttribute('type','text/javascript');
o.setAttribute('src','http://www.example.com/js/jquery-1.3.2.js');
t.lastChild.firstChild.appendChild(o);