How to lock JSplitPane divider when swapping components?
I have a simple extended JSplitPane that I set different panels to at different times when they are needed. Specifically, I split it into an upper and lower section, and I swap out the bottom section frequently. Each time I do, I reset the slider position to how I want it, but sometimes it jumps off at and re-positions itself to the top of the screen (not always).
Here's my code:
public class MainPanel extends JSplitPane{
public Screen screen;
public int height;
public ControlPanel curPanel;
public MainPanel(Screen screen, int height){
super(JSplitPane.VERTICAL_SPLIT);
this.screen = screen;
this.height = height;
setDividerSize(2);
setEnabled(false);
setTopComponent(screen);
setToInitControls();
}
public void setToInitControls(){
InitControls initCtrls = new InitControls(this);
setBottomComponent(initCtrls);
curPanel = initCtrls;
setDividerLocation(height / 4 * 3);
}
public void setToConfigControls(){
ConfigControls configCtrls = new ConfigControls(this);
setBottomComponent(configCtrls);
curPanel = configCtrls;
setDividerLocation(height / 4 * 3);
}
public void setToWaitControls(){
WaitControls waitCtrls = new WaitControls(this);
se开发者_如何学GotBottomComponent(null);
setBottomComponent(waitCtrls);
curPanel = waitCtrls;
setDividerLocation(height / 4 * 3);
}
//and so on (I have more methods like these further down)
//OVERRIDES: I figured overriding these might help. It didn't.
@Override
public int getMinimumDividerLocation(){
return (height / 4 * 3);
}
@Override
public int getMaximumDividerLocation(){
return (height / 4 * 3);
}
}
Basically, I use the "setTo...Controls()" methods to swap bottom panels. Is there a way to tell the slider to stay put where I placed it regardless of the panel's preferred sizes, or if not, how do I make the panels know what to shape themselves to fit in? Thanks for any/all suggestions!
EDIT: I should note that these panels do not use layouts. They are custom panels that I use mouse/keyboard listeners on and use my own graphics to paint over them.
I found the solution, thanks to the links above. It's actually quite simple. Instead of using
setDividerLocation(height / 4 * 3);
for every time I added a component, I just replaced it with:
setResizeWeight(0.66);
Did that once inside the constructor, and it never bothered me again. 0.66 is the equivalent decimal position to h/4*3 (I just trial-and-errored it).
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