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[Apache Tapestry]: Page content as a stream/or string

I would like to get the page content as a stream/or a string from a Page.class directly.
At the moment: I have to go through the route:
String uri = linkSource.createPageRenderLink(AnotherPage.class).toAbsoluteURI();
IOUtils.toString(uri, "UTF-8")
The problem with this approach is the call to toAbsoluteURI() makes the framework feel like the request is made from an external source; and it asks the user to login again; which should not be the case, as its one tapestry page accessing the other within the same application.
Note: I am not trying to "redirect" to AnotherPage.class. I would simply like to get another page's content as String without having to go via toAbsoluteURI() etc.
Alternatively, getting another page's content as Stream works too.
I am using Apache Tapestry 5.4.1

Take a look at the tapestry-offline module. It lets you obtain the HTML from a Tapeatry-generated page quite easily.
https://github.com/uklance/tapestry-offline

Have the method onActivate return an implementation of a StreamResponse, e.g.
public StreamResponse onActivate(Long productId) {
return new TextStreamResponse("text/csv", convertProductToCsv(productId));
}
By default a page returns a template, but in this way you override that behaviour.
Check out this page: https://wiki.apache.org/tapestry/Tapestry5HowToStreamAnExistingBinaryFile.

Vaadin how to print dynamic raw html using PrintUI class?

I'm following the example code which puts the html string into a Label. The html is perfect in the browser, is multiple pages and so on. However when I do a Print Preview (or Print) the printout is limited to only one page and there is vertical scrollbar on the printout.
How do I print multiple pages and remove the scrollbar?
My code in the PrintUI class is only:
setContent(new Label(template, ContentMode.HTML));

The answer can be found at: https://vaadin.com/forum/#!/thread/3869543/3869542
You basically need to resort to pure html. The following code does this and fixes the issue:
private void setSizeUndefined2Print()
{
com.vaadin.ui.JavaScript.getCurrent().execute("document.body.style.overflow = \"auto\";" +
"document.body.style.height = \"auto\"");
UI.getCurrent().setSizeUndefined();
this.setSizeUndefined();
}
You can find more details in the above link.

Sending a String in Javascript to java method in Play Framework

I'm working on a system for my university and I'm using the play framework to do that.
The Admin of this system sets a marker on a google map and I get the coordinates from that point.
Now I'm trying to pass this information to the server side, so that I might store these to Strings in a mySQL database. The only problem I have is passing the data from my String in javascript/JQuery to the java function.
I tried different solutions on the internet but some of them seemed outdated and I couldn't figure out how to do it.
I've only been programming in Java, Javascript, JQuery and PHP and have never used AJAX (like the $.get() methode from JQuery), but I think it might be pretty similar to what I know from PHP.
e.g.
http://java.dzone.com/articles/jquery-ajax-play-2
I'd like to pass my String with a button click to my java function, so I can store it in my db.
I'm really confused about this.
I know I can use something like
<a href="{#routes.Application.postMethod()}"> Send </>
and then mention the function in the routes like
POST /post controllers.Application.post();
but how do I pass my qjuery string?
and how do I store my String as a String in a java function like:
public static Result post(String Lat, String Lng){
???????????? EVOLUTION NEEDED ?????
}
Thanks in advance I really need your help :)!

I don't see why you are doing a POST, since this can be done using a GET request.
As per this example:
http://www.playframework.com/documentation/1.2/ajax#jsaction
We can see Play makes it easier using the jsAction tag. Lets assume you have the following route:
GET /admins/marker Admins.marker
Then in your HTML, at the bottom you'd do something like:
<script type="text/javascript">
$('#myButton').click( function() {
var action = #{jsAction #marker(':latitude',':longitude') /}
$('#result').load(
action({latitude: '23', longitude: $('#longitudeField').val }),
function() {
$('#content').css('visibility', 'visible')
}
)
});
</script>
In this case, the request will be sent like (example):
GET /admins/marker?latitude=23&longitude=67
And then on your backend, you need the have to java fn to deal with that route.
Basically the javascript/jquery, is called when #myButton element is clicked, then we generate the route URL we are going to make a request to using jsAction, then we make using load to make a GET request. You can change this to post too if you'd like.

Bridge between the Java applet and the text input controls on the web page

I have been working with a Java applet which is an applet that helps to write using only a mouse. For my case, I am trying to incorporate this into my webiste project as follows:
When the user clicks on any input element (textbox/textarea) on the page, this JAVA applet loads on the webpage itself. In the screenshot of the JAVA applet seen below, the user points to an alphabet to and the corresponding text gets written in the text box of the applet.
Now what I am trying to do is to get this text from the TextBox of the applet to the input element on the webpage. I know that this needs an interaction between the Java and JavaScript, but not being a pro, I really do not have the catch. Here's the Java applet and the code I have written.
Java applet and jQuery code (298kB): http://bit.ly/jItN9m
Please could somebdoy help for extending this code.
Thanks a lot!
Update
I searched somewhere and found this -> To get the text inside of Java text box, a getter method in the Applet to retrieve the text:
public class MyApplet extends JApplet {
// ...
public String getTextBoxText() { return myTextBox.getText(); }
}
In the JQuery code, the following lines are to be added I think:
var textBoxText = $("#applet-id")[0].getTextBoxText();
//Now do something with the text
For the code of the applet, I saw a GNOME git page here. The getText call already exists -- look at the bottom of this file: http://git.gnome.org/browse/dasher/tree/java/dasher/applet/JDasherApplet.java
I'd need to call 'getCurrentEditBoxText' but when should this method 'getCurrentEditBoxText' be called?
In my case, I would probably have to do it when the user clicks in a new input control etc.

You can have full communication between your Applet and any javascript method on the page. Kyle has a good post demonstrating how the Javascript can call the applet and request the text value. However, I presume you want the HTML Textfield to update with each mouse click, meaning the applet needs to communicate with the page. I would modify your javascript to something like this:
var activeTextArea = null;
$('textarea, input').click(function() {
$(this).dasher();
activeTextArea = this;
});
function updateText(text) {
// Careful: I think textarea and input have different
// methods for setting the value. Check the
// jQuery documentation
$(activeTextArea).val(text);
}
Assuming you have the source for the applet, you can have it communicate with the above javascript function. Add this import:
import netscape.javascript.JSObject;
And then, in whatever onClick handler you have for the mouse clicks, add:
// After the Applet Text has been updated
JSObject win = null;
try {
win = (JSObject) JSObject.getWindow(Applet.this);
win.call("updateText", new Object[] { textBox.getText() });
} catch (Exception ex) {
// oops
}
That will update the text each time that chunk of code is called. If you do NOT have access to the applet source, things get trickier. You'd need to set some manner of javascript timeout that constantly reads the value from the applet, but this assumes the applet has such a method that returns the value of the textbox.
See Also: http://java.sun.com/products/plugin/1.3/docs/jsobject.html
Update Modifying the applet is your best shot since that is where any event would be triggered. For example, if you want the HTML TextField to change on every click, the click happens in the applet which would need to be modified to trigger the update, as described above. Without modifying the applet, I see two options. Option #1 uses a timer:
var timer;
var activeTextArea;
$('textarea, input').click(function() {
$(this).dasher();
activeTextArea = this;
updateText();
}
function updateText() {
// Same warnings about textarea vs. input
$(activeTextArea).val($('#appletId')[0].getCurrentEditBoxText());
timer = setTimeout("updateText()", 50);
}
function stopUpdating() {
clearTimeout(timer);
}
This is similar to the code above except clicking on a text area triggers the looping function updateText() which will set the value of the HTML text field to the value of the Applet text field every 50ms. This will potentially introduce a minor delay between click and update, but it'll be small. You can increase the timer frequency, but that will add a performance drain. I don't see where you've 'hidden' the applet, but that same function should call stopUpdating so that we are no longer trying to contact a hidden applet.
Option #2 (not coded)
I would be to try and capture the click in the Applet as it bubbles through the HTML Dom. Then, you could skip the timer and put a click() behavior on the Applet container to do the same update. I'm not sure if such events bubble, though, so not sure if this would work. Even if it did, I'm not sure how compatible it would be across browsers.
Option #3
Third option is to not update the HTML text field on every click. This would simply be a combination of Kyle's and my posts above to set the value of the text field whenever you 'finish' with the applet.

Here's a possible solution. To get the text inside of your Java text box, write a getter method in the Applet to retrieve the text:
public class MyApplet extends JApplet {
// ...
public String getTextBoxText() { return myTextBox.getText(); }
}
In your JQuery code, add the following lines:
var textBoxText = $("#applet-id")[0].getTextBoxText();
//Now do something with the text
I found most of what I posted above here. Hope this helps.

This page explains how to manipulate DOM from a Java applet. To find the input element, simply call the document.getElementById(id) function with id of an id attribute of the text input box.

How to Access Java Objects through Javascript in Safari

i have written an Java Applet, which is loaded in HTML and its function is called through javascript.
The Applet ist loaded with this html-Code:
<applet id="xapplet" code="xapplet" archive="java/xApplet.jar" height="0" width="0"></applet>
In the applet is a function, which returns an ArrayList.
public ArrayList<String> GetXY()
{
ArrayList<String> lStrX=new ArrayList<String>();
lStrX.add("X");
lStrX.add("Y");
return lStrX;
}
THe function is called through javascript:
var applet = document.getElementById('xapplet');
var xy = applet.GetXY();
In most browsers I can access the Properties of the java-Object, which is given as result. I have successfully tested this with Firefox, Internet Explorer and Chrome.
Only in Safari the Objects I get have the type "CRuntimeObject", which don´t have any property or function.
So it seems to me, that in Safari i have to do something different. Can anyone can help me?
Thank you.

I do not know how to do it on Saphari but I'd recommend you to make some changes to your java code. Your method should return array, not list. I believe that in this case you will be able to access the element of this array from java script in all browsers.