First of all I'm using netbeans as my IDE and I don't know if this is causing it. When I run my program (even if I have build it and run the .jar) I think it selects the tab that was previously selected (before quiting). So if for example I close the app with the third tab selected, it starts up with that selected again. Is there a known solution for this? The selectedIndex property on the jTabbedPane is set to 0. Shouldn't this property be the default onLoad value?
Thx in advance, Jimmy
PS. BTW for some reason it didn't submit my question in Opera (?)
tabbedPaneName.setSelectedIndex(0);
just put that line in the place where the tabbed pane would be loaded
if a button actuion will load the tabbed pane then put the line there
but change tabbedPaneName to YOUR tabbed pane name.
Same problem here with Netbeans 6.8 and JTabbedPane. Neither setSelectedIndex() nor setSelectedComponent() makes a difference. The getSelectedIndex() returns the value previously set, but the pane is not selected correctly.
The reason for this is that the SingleFrameApplication saves it's state and restores the saved state on the next restart. This is done in the code generated by the GUI builder.
You could see that startup() and configureWindow() methods of the SingleFrameApplication are overridden.
Workarounds:
You could override the shutdown() method as well, then modifications to the configuration will not be saved. Note that the original will still be restored, so ensure that the required configuration is saved.
Modifying the startup() method also helps:
MyView myView = new MyView(this);
myView.getFrame().setVisible(true);
myView.getFrame().pack();
The only way it can be set to an index other than zero is if the Java code contains:
tabbedPane.setSelectedIndex(...);
So search the source code for that line and fix it.
Besides using JTabbedPane.setSelectedIndex(), it's also possible to select a tab by calling JTabbedPane.setSelectedComponent(). Have you searched the code for setSelectedComponent() as well?
I had the same problem and found an easy workaround.
In netbean's GUI-builder I set my tabbedpane to not enabled. Later in my program I checked if it was not enabled and in that case called MyTabbedPane.setEnabled(true); and MyTabbedPane.setSelectedIndex(0);
Same problem. Had to go back to NetBeans 7.0.1 to update a JSR 296 application and Java 7 runs it differently than previous versions did so the last tab created was always the one that had focus. Couldn't get anything to change that in the constructor, but finally found just wrapping the same call (setSelectedIndex()) in a call to invokeLater() solves it.
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
tabMain.setSelectedIndex(0);
}
}
);
Related
I am working on an eclipse-plugin which makes use of a custom XMLMultiPageEditor by extending XMLMultiPageEditorPart and XMLTableTreeView by extending XMLTableTreeViewer the second one as well implements a IResourceChangeListener.
I provide this plugin in eclipse-mars and eclipse-neon, however the wired behavior only shows up in eclipse-neon.
The editor works fine so far, the only problem is, that the tree-view is completely blank when a related xml-document is opened with it:
I can even modify the document in the source-view and save it .. the tree-view stays blank.
The only events which bring the tree-view to life are:
re-size the editor-window with the mouse
open some other document and than switch back to the tab of the open xml-doc.
After that, the tree-view works like it should. If I now change the xml in the source-view, the tree-view is updated immediately.
Any ideas how I could trigger a refresh of the tree-view manually ?
Is this maybe a bug in eclipse-neon ?
Ok, the problem seems to be, that the x/y size of the TreeViewer in eclipse-neon is initialized with (0,0). Here a hack to fix that:
...
public class MyXMLTableTreeViewer extends XMLTableTreeViewer implements IResourceChangeListener{
....
public MyXMLTableTreeViewer(Composite parent, IEditorPart parentEditor)
{
super(parent);
....
Point size = getControl().getSize();
size.x = 1000;
getControl().setSize(size);
}
It seems to be sufficient to only set x to some value ... 10 already gives an image, but the "node" section than looks a bit pressed, so I picket 1000.
Even if it is just internal API, it looks like a bug for me. So if you are further interested, take a look to the eclipse bugreport.
Both XMLMultiPageEditorPart and XMLTableTreeViewer are in internal packages. This means that they are not part of the Eclipse APIs and can be changed by the Eclipse developers without warning (see Eclipse API Rules of Engagement).
It may well be the case that something was changed between Eclipse Mars and Neon. You cannot rely on internal classes working the same between releases. It is not an Eclipse bug because you are not using official APIs.
I am working on an eclipse Plugin, and I would like to use an Editor, set some listeners on the current page(good terminology?), and remove these listeners when the user switches on another page (basically, the user is editing several files, as you could do with the default JAVA editor).
For the moment I have written a class extending StructuredTextEditor. The behavior of the plugin was the one expected, but when I try to work on several files, many problems occur. The main problem, according to me, is that I am not able to get notified when the user opens another page.
I read (and tested) a few things about MultiPageEditor, but it seems like it doesn't integrate an XML editor as default editor. How should I proceed in order to get a MultiPageEditor, with XML syntax coloring, and get notified when the user changes the current page to adjust my listeners ?
Thanks for reading.
the code is not perfect but at least you will have an example of a MultiPageEditor integrating an XMLEditor: https://github.com/fusesource/fuseide/blob/8.0.0.Beta2/editor/plugins/org.fusesource.ide.camel.editor/src/org/fusesource/ide/camel/editor/CamelEditor.java
The idea is to call addPage(new StructuredTextEditor()) inside createPages() method.
regards,
In your editor you can listen to selection changes in the editor text using:
getSelectionProvider().addSelectionChangedListener(listener);
where listener implements ISelectionChangedListener.
This applies to any editor derived from AbstractTextEditor (which includes StructuredTextEditor.
You need to do this fairly late in the editor creation. In the createPartControl method works:
#Override
public void createPartControl(final Composite parent)
{
super.createPartControl(parent);
getSelectionProvider().addSelectionChangedListener(listener);
}
I use XMonad+gnome as window Manager. I have the problem that, when I run a Java Web Start applicacion, It olways show an empty window, like the screen:
Is there something I can do to fix it?
UPDATE:
I tried simple programs from JWS Examples and it works, right. So it should be a problem of the application.
The failed aaplication is Blast2Go.
Change the name of the window manager to a known one like LG3D:
startupHook = setWMName "LG3D"
I had the exact same problem with my own Java code and using the other suggested solutions (setWMName, MToolkit, etc.) did not solve the problem with Xmonad. I must note that in other window managers (e.g. fluxbox), the app works as expected. In my case, however, I figured out the problem. If you have access to the source of the Java app, I suggest you consider the following:
If you have any JFrame or JPanel or other containers, you should explicitly define their layouts. If you set the layout to null, then the dimensions of the container must be set explicitly. Otherwise, the container won't be rendered at all. For instance, I have a JPanel that contains all my widgets. I'd rather have full control over the layout, so I set the layout to null, and then explicitly set the dimensions for the JPanel:
jContentPane.setLayout(null);
jContentPane.setPreferredSize(new Dimension(appletWidth,appletHeight+100));
Hope this helps.
Create a project in NetBeans and create a new JFrame.
Use the GUI Builder to drag some components like a button or label onto the frame and look and the source. You'll see by default that the member variables are private in the frame class.
Now go to Tools -> Options -> Misc -> GUI Builder and change something like the variables modifier to protected instead of private.
Now how do you apply those changes to the already generated code? I've tried several things like format code, fix code, etc. I've even tried cutting all the components off of the frame and then repasting them hoping to fix the issue, but it still uses the old settings.
When I create a new JFrame in the project and perform step 2 again, the changes have taken effect. Any new code generated on a new frame or file works as expected, but not the original.
This is very strange behavior, and I have to imagine there's an easy straight forward way to regenerate this code. Am I missing something?
I'm using NetBeans 7.1 and Java 7u2. Thanks in advance!
As you have already alluded to, the GUI Builder options are defaults only, for the creation of the form.
You can change most things about already-generated GUI elements.
To change the GUI components 'access' from private to protected, right-click the component in the GUI designer and select "Customize Code". At the bottom of the "Code Customizer" dialog you can change just about any aspect of the declaration of the GUI element. That dialog also lets you customise things like the constructor used for the element.
I would recommend you leave the access default at private, and only change the elements that you really need to be protected or even public.
And don't listen to the doom-sayers. We have over 600 GUI-designed forms in our application, we use the GUI designer every day, with multiple developers, and we very rarely have any issues at all.
By the way, we are using version 6.9.1 of NetBeans with Java6, so YMMV.
I have a gwt suggest box that does an RPC call to get some data from the server and display it. In some cases there are up to 2000 results. Whilst this works fine in chrome when the javascript runs in firefox it freezes the window for 5 seconds and sometime brings up script not responding warnings.
What I wanted to do was something like show 20 results and have a more button that can just append the next 20 without having to call back to the server every time it is clicked. I am fairly new to this, I have tried extending suggestBox and overriding showSuggestions() but it is protected so I can't.
Any suggestions/ ideas would be great.
Cheers,
Rob
See this question for pointers on how to extend the GWT's SuggestBox - basically, you want to provide your own SuggestOracle (it's used for fetching the suggestions), maybe your textbox (see the links in the question I mentioned earlier) and most likely a custom SuggestBox.SuggestionDisplay. Those three are passed via the constructor to SuggestBox. See the existing default implementations (MultiWordSuggestOracle, SuggestBox.DefaultSuggestionDisplay) for some ideas :)
If you want to change source code of SuggestBox see this
you should create com.google.gwt.user.client.ui packeges in your src root and copy there SuggestBox.java. When you use SuggestBox it calls your SuggestBox which is in your src.
Check this also it can be useful too
First solution come to mind is that write your own widget which extends from SuggestBox and the second solution maybe change the default css parameters of suggestbox
.gwt-SuggestBox {
}
.gwt-SuggestBoxPopup {
}
.gwt-SuggestBoxPopup .item {
}
.gwt-SuggestBoxPopup .item-selected {
}
.gwt-SuggestBoxPopup .suggestPopupContent {
}