Hi,
This is a general question about GWT and user interfaces. In my
(limited) use with PHP, the server was responsible for generation of
most of the 'UI'. Each script would emit some html which the client
browsers download and render.
If we wanted to write a project only using GWT for the presentation,
this model changes. As I understand it, now the server will spend less
time generating text via PHP scripts, because it would just be handing
out the same static .js files - the .js files are the compiled .js
app. Once it gets to the client browser, the javascript handles
building out the entire UI (via all the Widget classes).
If this is true, I wonder if anyone can comment on how it affects
performance (this is a very general question I know). In a PHP-driven
site, maybe for a logged-in user section I would have done something
like this:
echo "<div id='blah' etc etc/>
<p>Some text</p>
<p>Welcome back, " . $username . "!!!! </p>
</div>";
now with GWT, I would have set up a bunch of widget classes, then done
a separate AJAX call and pull down a JSON representation of the user
to populate my widget:
public class MyProject implements EntryPoint
{
public void onModuleLoad()
{
VerticalPanel p1 = new VerticalPanel();
final Label label = new Label("Loading...");
p1.add(label);
RootPanel.get().add(p1);
asyncAjaxCall("http://mysite.com/getUserInfo.php";) {
public void onSuccess(Response response) {
label.setText(JSONParse.parse(response));
}
}
}
}
I'm not sure which approach is better for the web application I want
to write. Preferably I'd like to stick totally with GWT for client-
side, and use PHP via AJAX to get data from my database to populate
the UI. But I'm not sure if all the widgets I want to create to make
an appealing user interface will overburden users' browsers, and
therefore am better off just using PHP to generate the pages for me.
Thanks for any thoughts
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