I’ve been having some problems in GWT with a table pulling 100+ rows at a reasonable speed using the FlexTable, but before making massive changes by switching to a Grid I ran some tests comparing the two. I originally found this issue when testing on IE for the first time after having no problems with FF.
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The Google Web Toolkit has been out for a while now, and yet there is still basic functionality that is missing from the toolkit. Don’t get me started on the lack of draggable/resizable columns for the FlexTable, because that’s a rant and a half. Given that GWT’s event handling model isn’t bad, you’d think they’d have included from the get-go the ability to handle right-clicks and bringing up a context menu or popup menu. Well, even with 1.6 on the doorstep it seems they forgot again or just don’t care. Now some people will spout out “web apps don’t need or shouldn’t have right-clicks handled or context menus overridden”……and for those I say STFU! Web apps are used for more than just banking, news, forums and dare I say blogs. The browser is becoming the new medium for running applications and just because an application is running in a browser doesn’t mean we should limit functionality. That’s about as narrow minded as saying that we’ve only had one mouse button for this long, why add a second one? Duh!
Anyway, enough with the blabbing. I’ve put together a simple example to add a right click context menu and override the default browser context menu using GWT.
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This is a quick example of a fading technique which notifies that a change or update in your GWT app has happened. read more »
This is a really quick tutorial on configuring Eclipse CDT (C/C++ Development Tools) so you can work with shared libraries. A lot of this may be basic for some readers, but for a programmer that’s used to Visual Studio and a Windows dll environment it may not. read more »
Sure the whole point of using GWT is so you don’t have to mess with that abortion known as javascript, but sometimes you may need (or actually want) to use javascript for something in your GWT application. For this we use JavaScript Native Interface (JSNI). JSNI uses the native keyword, so if you’ve used JNI (Java Native Interface) in the past you’ll have little to get used to.
I needed to use JSNI recently. Since GWT doesn’t provide a way to bring the browser to the front or top like javascript does with it’s self.focus(); I was able to use JSNI to call that line of javascript. Here’s a quick example:
public static native void bringToFront() /*-{ self.focus(); }-*/;
Then all you need to do is call the bringToFront() method like you normally would. Along with noticing in the native keyword, you’ll immediate see that the block looks commented out. JSNI has two tokens to mark the beginning and end of your javascript the /*-{ marks the begin and }-*/ marks the end. Everything in between those tokens are assumed to be javascript.
There are more examples on GWT JSNI site.