I have the following code :
JTabbedPane container;
...
AWindow page = WinUtils.buildWindow();
boolean existing = checkIfExists(page); // in this code, this will always be false
if(!existing)
{
String tabName = page.getLoadedFileLocation().getName();
container.addTab(page.getLoadedFileLocation().getName(), page);
}
Component comp = container.getTabComponentAt(0);
int sel = container.getSelectedIndex();
container.setSelectedComponent(page);
the thing is :
container.getTabComponentAt(0)
returns null. The other weird thing is :
container.getSelectedIndex()
returns 0. The logical thing that I think should happen, is to have a reference to the created window. Why am I receiving null? What am I doing wrong?
getTabComponentAt() returns the custom component you might add as the tab title. You might be looking for the getComponentAt() method to return the contents of a tab. The getSelectedIndex() just returns that the first tab is currently selected (it would return -1 for no tabs selected)
You're confusing the two sets of methods in JTabbedPane: the tab component methods and the component methods.
getTabComponentAt(0) is returning null because you haven't set the tab component. You've set the component that is displayed at index 0, but the tab component is the component that renders the tab--not the component that displays in the pane.
(Notice the example in the Javadocs:
// In this case the look and feel renders the title for the tab.
tabbedPane.addTab("Tab", myComponent);
// In this case the custom component is responsible for rendering the
// title of the tab.
tabbedPane.addTab(null, myComponent);
tabbedPane.setTabComponentAt(0, new JLabel("Tab"));
The latter is typically used when you want a more complex user interaction that requires custom components on the tab. For example, you could provide a custom component that animates or one that has widgets for closing the tab.
Normally, you won't need to mess with tab components.)
Anyway, try getComponentAt(0) instead.
Related
i have a little problem when i try to disable an Action of my Netbeans platform project. When the app starts, some Actions must be disabled, and i do that with this method:
CallableSystemAction.get(BuildProjectAction.class).setEnabled(FLAG);
It works, because the BuildProjectAction is disabled, but the corresponding items of the MenuBar and the Toolbar remains enabled until i click on one of it.
Only later that i have clicked on it, the comportament start to work correctly.
First question: Why?
If i want disable an Action, it's obvious that i want disable also the relative Icon in the Menu and in the Toolbar, so it must be automatic when i call Action.setEnabled(false).
It doesn't have sense that the Icons are not refreshed if i don't click on they.
Same problem if i try to use .getToolbarPresenter().setEnabled(false); and .getMenuPresenter().setEnabled(false);
For start the application with the icons disabled, I have tried to set the lazy attribute to FALSE and declare the image programmatically with the method setIcon(new ImageIcon(image)); that sets the same image for Menu and Toolbar.
And it works; there is only another problem: Menu and Toolbar have icons of different size (16x16 and 24x24).
It doesn't have sense that the if i set the icon with the #ActionRegistration(iconBase = "image.png") the correct icon is automatically selected, but if i use the method .setIcon(), it doesn't.
I have read some articles about Action, CookieAction, Lookup, but the only thing that i want is disable the graphic elements in the same moment when i disable the Action.
Second question: How i can do that?
This is an example of my Action.
#ActionID(
category = "Run",
id = "BuildProjectAction")
#ActionRegistration(
lazy = true,
iconBase = "images/icons/compile.png",
displayName = "#CTL_BuildProjectAction")
#ActionReferences({
#ActionReference(
path = "Menu/Run",
position = 3),
#ActionReference(path = "Toolbars/Run",
position = 3),
#ActionReference(
path = "Shortcuts",
name = "D-B")
})
#Messages("CTL_BuildProjectAction=Build Project")
public final class BuildProjectAction extends CallableSystemAction {
#Override
public void actionPerformed(ActionEvent e) {...}
#Override
public void performAction() {}
#Override
public String getName() {
return Bundle.CTL_BuildProjectAction();
}
#Override
public HelpCtx getHelpCtx() {
return HelpCtx.DEFAULT_HELP;
}
Thanks
The easiest way to create an action that is disabled at startup is to use the platform’s New Action Wizard to create your action, and to create one that depends on a "context" -- this is, on finding a specific object in the global lookup. If no object is available in the lookup, as at startup, then the action will be disabled.
The menu and toolbar graphic elements are bundled together with your action via the annotations. This means that enabled/disabled state of your context-aware action will automatically affect the icons in the menu and toolbar as well.
This article by Geertjan Wielenga has a walkthrough on creating a context-aware action:
http://netbeans.dzone.com/how-to-make-context-sensitive-actions
When you want to enable your action, you will add the object on which the action depends into the global lookup, which will cause the action (and its graphic elements) to be enabled.
This entry in the platform’s Developer FAQ has some examples of how to add an object to the global context:
http://wiki.netbeans.org/DevFaqAddGlobalContext
If you need to create an action that depends on a more complex set of conditions there is some discussion, as well as a code sample illustrating how to do this, in this platform developer list thread:
http://forums.netbeans.org/ptopic55295.html
The grayed-out versions of the icons that are shown when your action is disabled are created automatically by the platform. You only have to provide the "normal" non-grayed-out images.
As for the icons of different sizes, it’s a matter of filename convention. If your annotation declares the icon with #ActionRegistration(iconBase = "image.png”), then you will provide a 16x16 image called “image.png” and a 24x24 version called “image24.png”. The platform will find and use the appropriate size in the menu and toolbar.
I have developed a custom component consist of a layout and two labels within it. This layout is draggable. The code is similar to this :
DragAndDropWrapper boxWrap= new DragAndDropWrapper(layout);
mainLayout.addComponent(boxWrap);
After that I have a RichTextArea that allows the layout to be dropped in it. With this code.
RichTextArea richText= new RichTextArea;
DragAndDropWrapper dndWrapper = new DragAndDropWrapper(richText);
dndWrapper.setDropHandler(new DropHandler() {
public void drop(DragAndDropEvent event) {
//Do whatever you want when something is dropped
}
//Criterio de aceptacion
public AcceptCriterion getAcceptCriterion() {
return AcceptAll.get();
}
});
The code works fine. But when I drop the layout within the RichTextArea y want to get the Text written in this area and add some text but the method richText.getValue() is not updated unless I change the focus to another component or tab out. I guess there is not being communication with the server side so the value is not updated. Is there any way to force a a focus change when mousedown on the layout? I tried with JavaScript but i dont know how to add a onmousedown="function()" attribute to the layout component. I also tried extending RichTextArea and implementing the MouseListener or something or a TextChangeListener, but nothing works.
Any clue? Thank you.
PS: The component cannot be different from a RichTextArea.
Have you set richText.setImmediate(true); ?
as seen in:
http://www.zkoss.org/zkdemo/combobox/simple_combobox
When the item is selected only text appears.
How can I make the image + name appear when the item is selected?
which method from Combobox do i need to override?
ty
There is no build-in way for you to do things like that. Because a Combobox is just a textbox with a customizable drop-down list.
But this can be done pretty easily. You can just add an Image at left of the combobox, and listen combobox Events.ON_SELECT event. Then update the Image according to selected item.
Here is an example code (assuming use SelectorComposer)
#Listen("onSelect = combobox#mycmb")
public void onComboboxSelected(SelectEvent event) {
Set<MyObject> selectedObjects = event.getSelectedObjects();
MyObject obj = selectedObjects.get(0);
image.setSrc(getImagePath(obj)); // image are Image component you wired.
}
Note : I didn't test the code, but you should get the idea
I have the following problem:
I'm preparing an editor in Eclipse and one of the tab contains TreeViewer to show items in the tree. Each item has a name and a value, which is editable.
The problem I need to indicate to user that value is incorrect (e.g. exceeds a given range). My idea is to decorate incorrect cells with a warning or error icon which will be shown also after editing is complete.
Does anybody have an idea how to decorate items in the tree? I was experimenting with ControlDecoration class but without success.
Thanks in advance,
Marcin
PS. I'm limited to Eclipse 3.4
There are two ways that this can be done. If your TreeViewer displays objects that are instances of EObject (generated by EMF. If your don't understand this part, skip to the next paragraph :)), you can change these EObject's "XyzItemProvider" so that their "getImage" method return a decorated image instead of the "plain" image... and that's it for EMF objects, nothing else needs to be changed.
If you're displaying "classic" Java Objects, you'll have to change your TreeViewer's LabelProvider in order to decorate the Image. This is done through the TreeViewer#setLabelProvider() method.
What you will need then is "how to decorate an Image", which is done through code such as this :
public class MyLabelProvider extends DecoratingLabelProvider {
public Image getImage(Object element) {
Image image = super.getImage(element);
List<Object> images = new ArrayList<Object>(2);
images.add(image);
images.add(<Image of the decorator>);
labelImage = new ComposedImage(images); // This will put the second of the "images" list (the decorator) above the first (the element's image)
return decoratedImage;
}
[...]
}
You then need to give your tree viewer this label provider :
TreeViewer treeViewer = new TreeViewer(...);
treeViewer.setLabelProvider(new MyLabelProvider(new LabelProvider()); // new LabelProvider()... or your previous label provider if you have one.
I can see how to instantiate a second MVC group, e.g.
def (loginPaneModel, loginPaneView, loginPaneController) =
createMVCGroup('LoginPane', 'LoginPane', [:]);
view.loginPanel = loginPaneView.loginPanel
But I don't want to show as part of my main window. I want it to pop up over it. What do I call to do that? Thanks!
The easiest way would be to use the view panel as the root of a dialog in the parent MVC group. In the view for the group that yor code snippet is the controller of you could do something like this...
application(title:'your app', ....) {
// your existing code...
loginDialog = dialog(title:'Login Panel', visible:false) {
panel(loginPanel)
}
}
And then when you need to show the dialog (in the same controller)
view.loginDialog.visible = true
Nesting a dialog inside of another window has the side effect of setting the dialog's owner to the frame or dialog of the parent. Having a dialog owned by another dialog/window is what causes the dialog to be linked with the parent and always float on top of that parent. It will also raise/lower with the parent as well.
Well, it seems that only the first line is needed. That was enough to pop up a window. I believe the key, though, was to make the view a frame.
def frame = frame(title:'Login', pack:true, locationByPlatform:true) {
...
}
frame.pack()
frame.show()