Is there a way to bypass the layout manager for a given component in Swing? Something similar to position="absolute" in CSS. Null layout is not an option.
I have an existing GUI which I can't modify and uses different kinds of layouts and I need to add a button a the top right corner of the screen.
If you can't modify the existing GUI, including the top-level containing JFrame, you might be out of luck.
If you can modify the root container, you can achieve what you want with a layered pane. You can put your existing JTabbedPane in a lower layer, and add your button on a higher layer (and there you can use a null layout + setLocation()).
Related
I have a relative layout tree, let's say that I have a couple of buttons in root layout and other one is placed on top of the buttons, covering them with it's backgound.
Visually everything is ok, but I still can activate invsible buttons placed under the layout, is there any property related to this?
I have tried elevation, translationZ, etc. I would like to avoid programatically fixing the problem (isShown for example), is there anything else I can change in xml to prevent them from activating?
In your layout xml file, add setClickable="true" to the same layout you've set the background to.
I have several custom panels arranged in a basic BoxLayout, on which I have set a SortingFocusTraversalPolicy (and also set setFocusTraversalPolicyProvider(true), in order for the policy to take effect).
The custom focus traversal works perfectly within each custom panel, but when you tab out of the last component in the custom panel, focus goes to the first component in that same panel, rather than the first component in the next custom panel.
How would I go about "chaining" the focus from one custom panel to another?
I am creating simple application in java - Eclipse - WindowBuilder Editor. JFrame`s contentPane has JGoodies FormLayout in which I have to place 3 or 4 Panels - depending on mode.
It is proper way to make if construction that decides if content pane will be divided 1x3 or 1x4(facilitation because between all I use relatedgaps and so on..)?
I am not sure if this is good approach but I do not know how can I do this in other way than if construction. It has to be practical and flexible approach - to handle resizing the window, et cetera..
Common approaches for dynamic layout include these:
Use revalidate(), and possibly repaint(), to layout a Container again after adding or removing components, as shown here.
Replace the layout and validate() the Container, as shown here.
Use CardLayout to replace one panel with another, as shown here and here.
In my Netbeans code I have JPanels and JDialog which are driving me crazy at times. Some of the controllers on these containers decide not to show up or automatically change size even though I have set up both their size and contents within the code and through using the IDE properties. For instance some of my jButtons on a certain JPanel does not show its text label or the sizes of some of my text field change.
Any solution to this would be grately appreciated!
When you create GUI using the NetBeans IDE wizards the Layout manager attached with JPanel and JFrame is GroupLayout and it works as expected. It keep the size of your JPanel and JFrame as you have specified.
Now if you change the LayoutManager of the JPanel or JFrame then you are on your own. You must know the consequences of changing the LayoutManager and update / add the required code to make the code to run as expected.
I will suggest you to keep the default LayoutManager as GroupLayout if you want to get what you see in the NetBeans component designer.
Unfortunately you did not provide any code snippet that can show your problem. But let me assume that you are confused with layout behavior. Typically we use Layout manager and delegate to it the responsibility of placing and re-sizing the graphical elements. Layout manager does it work when the parent element is being painted, i.e. during execution of method paint() that happens asynchronously and may be caused by various events (e.g. changing focus, re-sizing of window etc).
In this case all your attempts to change size of specific element by calling its setSize() could be overridden by layout manager that decides to change size of the same element differently.
So, if my assumption is correct learn to use layout managers and ask more specific questions if you have any difficulties with them.
I have a user interface that uses a JXMultiSplitPane to display multiple components. However, I would like some of the panes to be collapsible. I thought about how I might use a JXCollapsiblePane here, but I can't figure out a good way to have the multisplit and collapsibility of select panes.
My thought was to not use JXCollapsible pane but rather to just create a button that collapses/expands a pane by setting the divider location for that pane. Would there a way to use JXCollapsiblePane here so I can get the nice features such as the animated collapsing/expanding?
multiSplitPane.getMultiSplitLayout().displayNode("r0", !hide);
Use displayNode() to show/hide specific panes.