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JLabel not greyed out when disabled, when HTML text displayed

Answer 1

A:

You can specify the font color in the HTML.

camickr 2010-02-11 05:52:24

@camickr: So I would have to do this every time the enabled / disabled state changes?

bguiz 2010-02-11 06:01:01

Yes, which is why using the setForeground() method is still the easiest solution.

camickr 2010-02-11 15:50:36

Answer 2

+6 A:

If text is HTML, the text wont be grayed out because of the following code in BasicLabelUI#paint()

        View v = (View) c.getClientProperty(BasicHTML.propertyKey);
        if (v != null) {
        v.paint(g, paintTextR);
        }

As you can see if the text is html, then the View is used to paint and it is not checked wheter the label is enabled or not. Hence we need to do it explictly as shown below:

label2.addPropertyChangeListener(new PropertyChangeListener() {
   public void propertyChange(PropertyChangeEvent evt) {
    if (!evt.getPropertyName().equals("enabled"))
     return;
    if (evt.getNewValue().equals(Boolean.FALSE))
     label2.setText("<html><font color=gray>HTML <b>text</b></html>");
    else
     label2.setText("<html><font color=black>HTML <b>text</b></html>");
   }
  });

Suraj Chandran 2010-02-11 06:01:25

`setForeground` works, so I'd suggest using that rather than altering the label text to change the colour.

lins314159 2010-02-11 06:11:37

Answer 3

A:

Override the paint method in the UI, set the client property BasicHTML.propertyKey to null if it is disabled and call super...

sreejith 2010-02-11 08:44:36

@sreejith...apparently it will not work, for two reasons a) if you set BasicHTML.propertyKey to null then any component using html rendering will fail to paint html b) though the text will be displayed in gray, it will display the entrie html i.e. it will display "<html>HTML <b>text</b>" instead of HTML text. :)

Suraj Chandran 2010-02-11 08:57:53

Answer 4

+1 A:

Implemented solution:

    Color foreground = (shouldShow) ? SystemColor.textText : SystemColor.textInactiveText;
    for (Component comp : mInnerPanel.getComponents())
    {
        comp.setForeground(foreground);
    }

Caved in and used setForeground in the end, as it appears that Java seems to explicitly ignore the enabled property when painting JLabels so long as it contains HTML text. See also @Suraj's answer, for "pure" solution.

bguiz 2010-02-12 01:24:07

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JLabel not greyed out when disabled, when HTML text displayed

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