How to change color of text in disabled JTree?

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Rene Ruppert - 14 Feb 2005 16:07 GMT

Hi,

When using JTree.setEnabled(false); all entries turn into the standard metal
disabled grey.
Is there a way to change this color?
I tried my own item renderer and setting the foreground color of the item
JLabels but wthout success.

Thanks.

cu
Ren?

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Rene Ruppert - 14 Feb 2005 16:14 GMT

An addon: setting "secondary2" in the DefaultMetalTheme is no solution for
me since it changes all disabled colors but not only JTree.

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John McGrath - 14 Feb 2005 21:22 GMT

> When using JTree.setEnabled(false); all entries turn into the standard
> metal disabled grey.
> Is there a way to change this color?
> I tried my own item renderer and setting the foreground color of the
> item JLabels but wthout success.

You need to enable the renderer component. The renderer sets the enabled
state of the renderer component (a JLabel) to the enabled state of the
JTree. JLabel ignores the foreground color and paints itself differently
when it is disabled. See the getTreeCellRendererComponent() method of
DefaultTreeCellRenderer for more details.

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Regards,

John McGrath

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Rene Ruppert - 15 Feb 2005 11:04 GMT

Hi,

> You need to enable the renderer component. The renderer sets the enabled
> state of the renderer component (a JLabel) to the enabled state of the
> JTree. JLabel ignores the foreground color and paints itself differently
> when it is disabled. See the getTreeCellRendererComponent() method of
> DefaultTreeCellRenderer for more details.

I do already override getTreeCellRendererComponent() and I use
myLabel.setForeground() to change the color. This works fine as long as the
corresponding tree is setEnabled(true). As soon as I call
JTree.setEnabled(false) the setForeground() looses its effect.
What now?

Regards,
Ren?

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John McGrath - 15 Feb 2005 11:51 GMT

> > You need to enable the renderer component.
>
[quoted text clipped - 3 lines]
> JTree.setEnabled(false) the setForeground() looses its effect.
> What now?

Enable the renderer component.

The component that you return from the getTreeCellRendererComponent() is
what paints the cell. If that component is disabled, it will paint the
cell so as to appear disabled, and it ignores the foreground color. You
need to enable the component, so it will not paint the cell so as to
appear disabled.

If this still does not make sense to you, please post the code of your
getTreeCellRendererComponent() method.

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Regards,

John McGrath

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Rene Ruppert - 15 Feb 2005 12:21 GMT

Hi,

> Enable the renderer component.

Okay, now I understand your previous post! That's it of course...a simple
myLabel.setEnabled(true) before returning it did the job.

Thanks.

Ren?

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How to change color of text in disabled JTree?

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