I'm quite new when it comes to creating extensions for Chrome and have the worst time trying to grasp concepts.
What I'm hoping to do, eventually, is create an extension which will highlight all links in a page which I currently have bookmarked.
I'm currently just trying to feel my way around, and looking to grab the links and pass them to the background page, but it doesn't seem to be working for me. When I attempt to pass a link I get nothing (or object {} and then a never-ending sea of arrows pointing to various things) If I pass something else, such as "hello", I can get that to work fine. I'd be grateful for some pointers, recommendations et al.
content:
// Get all the links on the page.
var links = document.getElementsByTagName("a");
for (var i = 0; i < links.length; i++) {
console.log(links[i]);
chrome.runtime.sendMessage(links[i]);
}
It does successfully return on links from the content script.
background
var links;
chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
console.log(request);
});
My background script had more in it, but it didn't seem to help in any way so I've pared it back to the most basic of code.
While I would not doubt I'll have questions beyond this, the present issue is preventing me from progressing and I've not been able to figure out what (probably simple thing) I'm doing wrong.
Thanks kindly.
Thanks! Much appreciated. I'm now moving in the right direction.
For those of you (maybe one of you) wondering, it was solved simply by adding .href to the end of links[i].
eg;
chrome.runtime.sendMessage(links[i].href);
I have been working with Vaadin charts during this week and I found a problem that I cannot solve. I need to send several charts to a PDF generation (using iTextpdf) and I could do it using SVGGenerator. The main problem is I cannot use this solution because the final laptop doesn't allow any installation, and Phantomjs is required for SVG Generator (no add-on can be installed neither). I tried to find a different solution to convert the chart content into file or buffer that I can manage, but I think I have been reading so much posts and I am not able to distinguish the solution.
So, I will try to clarify basic questions first:
a) Is it possible to manage SVG Generator without any installation in the laptop?
b) If not, is there a different way to convert a chart into an object which class could be managed to insert it into a PDF?
I can assure you I tried to read all documentation in this forum and official Vaadin forum related to this topic but I couldn't find any solution. I don't want to seem lazy, I only want to avoid spending more time and clarify the maining pre-conditions to solve this issue.
thanks in advance for your time and help.
Kind regards,
David.
You can take a screenshot of your chart and append it to pdf:
Screenshot screenshot = new Screenshot();
screenshot.setTargetComponent(myTargetComponent);
myChartLayout.addComponent(screenshot);
//when complete
screenshot.addScreenshotListener(new ScreenshotListener() {
public void screenshotComplete(ScreenshotImage image) {
//do something
}
});
//take screenshot
screenshot.takeScreenshot();
You will not be able to render a Vaadin Chart without a web browser engine of some kind. That's what PhantomJS provides. If you have a full-blown web browser at your disposal, though, you can grab the SVG markup manually from there; it's just a bit more difficult to automate. This works in Chrome:
Open your Charts app in the browser
Open the JavaScript console (Ctrl/Cmd + Shift + J)
Type something like this: copy(document.getElementsByTagName('svg')[0].outerHTML)
Paste the contents of your clipboard to a new text file and save it as an SVG.
You don't need to install phantomjs, just bundle its binary along with your web application (Reference). I did the same thing with my Amazon AWS deployment and it works just fine.
I must not be using jsfiddle correctly. Because I am having problems with a more complex project I have decided to go back to the intro and see if there is something I missed.
I am using PluralSight videos to get up to speed with knockout.
In the intro demo Steve Michelotti has a fiddle in which he is binding data in jquery prior to adding knockout. I can't seem to get this binding to work. The fiddle is here
http://jsfiddle.net/SapphireGirl/Bdr55/2/
This is a very simple example and I would expect to see the
Hello, bob in the run box but the name is not binding the the text in the view model even in jquery like it is shown in the demo.
He is using jquery 1.7 while I am using jquery 2.0
Why won't my name bind?
Something silly I am sure.
javascript:
$(function(){
var viewModel = {
name: "bob",
changeName: function() {
this.name = "steve";
}
};
ko.applyBindings(viewModel);
});
Thanks in advance
You say
In the intro demo Steve Michelotti has a fiddle in which he is binding data in jquery prior to adding knockout. I can't seem to get this binding to work.
but in your code sample you're explicitly referencing ko - the Knockout object.
The problem is that you want to use both JQuery and Knockout - so far you've chosen 'JQuery 2.0' as the framework for your page, but you haven't loaded Knockout anywhere.
Go to the 'External Resources' section on the left, and paste 'http://ajax.aspnetcdn.com/ajax/knockout/knockout-2.2.1.js' (one of the Knockout CDN urls - from their download page) and press the '+' to add it to your jsfiddle.
Press 'Run' and now everything should work.
I'd like to have a div (with class="top") come slide in from top:-300px; to top:40px; with some nice easing. I can't find any examples. Does anyone knows how to do this on load page?
Here's some JavaScript and CSS3:
The JavaScript:
<script>
document.getElementById("slide").style.top="40px";
</script>
And the CSS:
-webkit-transition:all 1s;-ms-transition:all 1s;-moz-transition:all 1s;-o-transition:all 1s;-webkit-transition:all 1s;
The element that would slide would have to have the id "slide". It would also need top have "position:absolute;top:-300px" in the CSS to make it -300px. You could also add "left:20%;" or something of the sort to the CSS to make it look better. Whatever works with your design.
You should look up about the CSS transition property. It's very nice for special effects. In this case, I made it take 1 second to slide. You could always change it.
This could also be implemented using jQuery, a JavaScript library, (which would take even less code), but I usually prefer regular JavaScript and CSS if I can help it.
Here's a demo of the code I wrote above: jsFiddle.
Oh, and PLEASE mark this question as the answer if it helped you. It will give me privileges and earn me more reputation.
Hope this helped!
I am trying to create an interactive map where users can click on different provinces in the map to get info specific to that province.
Example:
archived: http://www.todospelaeducacao.org.br/
archived: http://code.google.com/p/svg2imap/
So far I've only found solutions that have limited functionality. I've only really searched for this using an SVG file, but I would be open to other file types if it is possible.
If anyone knows of a fully functioning way to do this (jQuery plug-in, PHP script, vector images) or a tutorial on how to do it manually please do share.
jQuery plugin for decorating image maps (highlights, select areas, tooltips):
http://www.outsharked.com/imagemapster/
Disclosure: I wrote it.
Sounds like you want a simple imagemap, I'd recommend to not make it more complex than it needs to be. Here's an article on how to improve imagemaps with svg. It's very easy to do clickable regions in svg itself, just add some <a> elements around the shapes you want to have clickable.
A couple of options if you need something more advanced:
http://jqvmap.com/
http://jvectormap.com/
http://polymaps.org/
I think it's better to divide my answer to 2 parts:
A-Create everything from scratch (using SVG, JavaScript, and HTML5):
Create a new HTML5 page
Create a new SVG file, each clickable area (province) should be a separate SVG Polygon in your SVG file,
(I'm using Adobe Illustrator for creating SVG files but you can find many alternative software products too, for example Inkscape)
Add mouseover and click events to your polygons one by one
<polygon points="200,10 250,190 160,210" style="fill:lime;stroke:purple;stroke-width:1"
onmouseover="mouseOverHandler(evt)"
onclick="clickHandler(evt)" />
Add a handler for each event in your JavaScript code and add your desired code to the handler
function mouseOverHandler(evt) {};
function clickHandler(evt) {};
Add the SVG file to your HTML page (I prefer inline SVG but you can use linked SVG file too)
Upload the files to your server
B-Use a software like FLDraw Interactive Image Creator (only if you have a map image and want to make it interactive):
Create an empty project and choose your map image as your base image when creating the new project
Add a Polygon element (from the Shape menu) for each province
For each polygon double click it to open the Properties window where you can choose an event type for mouse-over and click,
also change the shape opacity to 0 to make it invisible
Save your project and Publish it to HTML5, FLDraw will create a new folder that contains all of the required files for your project that you can upload to your server.
Option (A) is very good if you are programmer or you have someone to create the required code and SVG file for you,
Option (B) is good if you don't want to hire someone or spend your own time for creating everything from scratch
You have some other options too, for example using HTML5 Canvas instead of SVG, but it's not very easy to create a Zoomable map using HTML5 Canvas,
maybe there are some other ways too that I'm not aware of.
Just in case anyone will search for it - I used it on several sites, always the customization and RD possibilities were a perfect fit for what I needed. Simple and it is free to use:
Clickable CSS Maps
One note for more scripts on a site: I had some annoying problems with getting to work a map (that worked as a graphic menu) in Drupal 7. There where many other script used, and after handling them, I got stuck with the map - it still didn't work, although the jquery.cssmap.js, CSS (both local) and the script in the where in the right place. Firebug showed me an error and I suddenly eureka - a simple oversight, I left the script code as it was in the example and there was a conflict. Just change the front function "$" to "jQuery" (or other handler) and it works perfect. :]
Here's what I ment (of course you can put it before instead of the ):
<script type="text/javascript">
jQuery(function($){
$('#map-country').cssMap({'size' : 810});
});
</script>
Go to SVG to Script
with your SVG the default output is the map in SVG
Code which adds events is also added but is easily identified and can be altered as required.
I have been using makeaclickablemap for my province maps for some time now and it turned out to be a really good fit.
I had the same requirements and finally this Map converter worked for me. It is the best plugin for any map generation.
Here is another image map plugin I wrote to enhance image maps: https://github.com/gestixi/pictarea
It makes it easy to highlight all the area and let you specify different styles depending on the state of the zone: normal, hover, active, disable.
You can also specify how many zones can be selected at the same time.
The following code may help you:
$("#svgEuropa [id='stallwanger.it.dev_shape_DEU']").on("click",function(){
alert($(this).attr("id"));
});
Source
You have quite a few options for this:
1 - If you can find an SVG file for the map you want, you can use something like RaphaelJS or SnapSVG to add click listeners for your states/regions, this solution is the most customizable...
2 - You can use dedicated tools such as clickablemapbuilder (free) or makeaclickablemap (i think free also).
[disclaimer] Im the author of clickablemapbuilder.com :)
<script type="text/javascript">
jQuery(function($){
$('#map-country').cssMap({'size' : 810});
});
</script>
strong text