I have a situation where I am storing dynamic css data about a text object in a database as json. I need to map that same css data into styles in CKEditor. I am successfully able to load the classes into the CKEDITOR styles dropdown by parsing the json into the style set by running:
CKEDITOR.stylesSet.add('myStyles',styleObj);
Unfortunately this does not fully work with the onscreen text because the css does not exists as a file.
I've also successfully generate the css into the head of the dom by appending the dynamically generated css to a style tag. Unfortunately this still does not connect the actual css generated to the CKEDITOR because it is in a separate context.
Does anyone know how I can either connect document level css to the CKEDITOR instance or generate the CSS in a way that CKEDITOR understands? I'd prefer not to write a temporary CSS file to disk for every single user who needs to view the text object.
I figured out the answer to this by using the CKEDITOR.addCss() function.
Instead of trying to load the css into the document head as styles, the process can be much simpler by running CKEDITOR.addCss() function.
The code looks like:
for each css style found in the json:
styleObj.push({name:this.name,element:'p',attributes: { 'class':cssClassName}});
var cssSheetString = '.'+cssClassName+' {font-family:'+this.fontFamily+'; font-size:'+fontSize+'; font-weight:'+this.fontStyle+'; text-decoration:'+textDecoration+'; } ';
CKEDITOR.addCss(cssSheetString);
after the loop ends then also add the styles object:
if(!CKEDITOR.stylesSet.registered.myStyles){
CKEDITOR.stylesSet.add('myStyles',styleObj);
}
Just for posterity. I've seen answers that say this will work
CKEDITOR.on('instanceCreated', function (event) {
event.editor.addCss(styles);
});
but it does not, you have to use
CKEDITOR.on('instanceCreated', function (event) {
CKEDITOR.addCss(styles);
});
also if your styles variable changes you have to destroy and recreate your ckeditor instance with the new styles.
Related
I'm testing out CKEditor
I'm trying to get the display in the editor, to match my sites css style for displaying the end result.
What I'm trying to do is style the "wrap code" button to match the css of my site, by adding in a class.
I've seen on this page of the manual, that you can do stuff like this:
config.format_pre = { element: 'pre', attributes: { 'class': 'editorCode' } };
However, doing the same for a code block like so:
config.format_code = { element: 'code', attributes: { 'class': 'someclass' } };
Doesn't actually do anything. Anyone got a pointer on what I might be missing?
I've tested it working on other elements, so I know the config file changes are being picked up.
The one important thing is that every tag which is formatted via config.format_tagname should be also included in config.format_tags. However, this two settings (config.format_tagname and config.format_tags) works only form Block-Level elements (as stated in the manual page you referenced ).
As code element is considered as an inline one by CKEditor (see DTD), it is not possible to use this config here.
However, the easiest way to modify the elements added via Style dropdown is to edit styles.js file which is present in CKEditor directory. The dropdown styles are based on this file, so you can easily modify code element there. You can also define your custom stylesSet.
I am using some javascript on my page to put some addons on page, but javascript add some css styles and those new css styles override existing css styles on page.
Is there a way to disable new css styles. I know I can use javascript to delete new created css rules, but I dont want to use javascript. Is it posible?
Thanks
You can try to raise the priority of your css rules by some simply tricks.
For example, you can give an id attribute to your most external container element in the html, for example id="yourContainerId".
Then you can raise the priority of your css classes by prepending #yourContainerId to all your classes that you want to raise:
#yourContainerId .yourClass1 {
}
#yourContainerId .yourClass2 {
}
etc..
if you want to know more about css priority, this is a good resource:
http://www.w3.org/wiki/CSS/Training/Priority_level_of_selector
Note: this trick cannot work in some particular conditions, because if your javascript writes inline style on your html elements there is nothing to do, you can only remove them with js.
Tell me if you need a jsFiddle example
Just look at this css path and do the next code:
$("rel").each(function(){
if($(this).attr("href")=="insert you path here"){
$(this).attr("disabled", "disabled");
}
});
What's the best way to get usable DOM for an AJAX-requested page without loading any related images/scripts/etc?
Backstory:
I want to load a page in background, then perform a sort of data-mining on it (this is a browser extension, so I can't control the pages themselves). I do not want to spend time loading images and running scripts on the background page, since it is only page contents I need.
load data via ajax
strip all the tags containing src and href attributes, or simply change the value of those attributes with data:null. If data also contains inline style you should remove all statements containing a reference to external resources (e.g. background and border images, .htc components, xul bindings, .ico cursor)
append filtered data to the DOM and analyze it
step 2 could be achieved through a regular expression in javascript. e.g.
/* here we are in the ajax "success" callback */
...
data = data.replace(/(src|href|style)=['"]([^'"]+?)['"]/gi,
function(match, attribute) {
return (attribute.toLowerCase() === 'style')
? attribute + '=""' /* remove all inline style */
: attribute + '="data:null"'; /* href and src set to data:null */
})
/* append filtered data */
$(data).appendTo($('body_or_other_element'))
If possible, use jQuery, as I mentioned above. It makes it easy to select portions of the page DOM as needed.
Here are some examples:
You can grab tags href attribute like this: $("a", $(ajax_response)).attr("href");
Title's contents: $("title", $(ajax_response)).html();
You might have to test out the selectors to see which work best, but, I think this would be an easy way of going about this.
I have links such that when the user clicks on them, the DOM is quckly updated using the methods below.
Basically, I just set the innerHTML document to the text and the page updates.
However I would like html code with other html code when applicable. This is the only place in my .js file that has a significant amount of text. How do I move this?
/*
link - quick dom links - would like to find a way to move this into xhtml where it belongs
*/
function o2(a,b)
{
return document.getElementById(a).innerHTML=b;
}
function l1()
{
........
I would recommend putting all of the possible HTML into your HTML file. Assign a unique id to each element and use CSS to hide them all or all but one by default (using 'display: none'). Then your javascript function can simply change CSS based on which html fragment you need to be visible.
We've got a little tool that I built where you can edit a jQuery template in one field and JSON data in another and then hit a button to see the results immediately within the browser.
I really need to expand this though so the designer can edit a full CSS stylesheet within another field and when we render the template, it will have the CSS applied to it. The idea being that once we've got good results we can take the contents of these three fields, put them in files and use them in our project.
I found the jQuery.cssRule plugin but it looks like it's basically abandoned (all the links go nowhere and there's been no development in three years). Is there something better or is it the only game in town?
Note: We're looking for something where someone types traditional CSS stylesheet data in here and that is used immediately for rendering within the page and that can be edited and changed at will with the old rules going away and new ones used in their stead. I'm not looking for something where the designer has to learn jQuery syntax and enter in individual .css("attribute", "value") type calls to jQuery.
Sure, just append a style tag to the head:
$("head").append("<style>p { color: blue; }</style>");
See it in action here.
You can replace the text in a dynamically added style tag using something like this:
$("head").append("<style id='dynamicStylesheet'></style>");
$("#dynamicStylesheet").text(newStyleTextGoesHere);
See this in action here.
The cleanest way to achieve this is by sandboxing your user-generated content into an <iframe>. This way, changes to the CSS won't affect the editor. (For example, input { display:none; } can't break your page.)
Just render out your HTML (including the CSS in the document's <head>, and write it into the <iframe>.
Example:
<iframe id="preview" src="about:blank">
var i = $('#preview')[0];
var doc = i.contentWindow || i.contentDocument;
if (doc.document) doc = doc.document;
doc.open('text/html',true);
doc.write('<!DOCTYPE html><html>...</html>');
doc.close();
If the user should be able to edit a whole stylesheet, not only single style attributes, then you can store the entered stylesheet in a temporary file and load it into your html document using
$('head').append('<link rel="stylesheet" href="temp.css" type="text/css" />');
sounds like you want to write an interpreter for the css? if it is entered by hand in text, then using it later would be as simple as copy and pasting it into a css file.
so if you have a textarea on your page to type in css and want to apply those rules when you press the button, you could use something like this (only pseudocode, needs work):
//for each css id in the text area
$.each($('textarea[name=cssTextArea]').html().split('#'), function({
//now get each property
$.each($(this).split(';'), function(){
$(elem).css({property:value});
});
});
then you could write something to go through each element that your designer typed in, and get the current css rules for it (including those that you applied using some code like the snippet above) and create a css string from that which could then be output or saved in a db. It's a pain and much faffing around with substrings but unfortunately I don't know of a faster or more efficient way.
Hope this atleast gives you some ideas