📄 defaulttreecellvalueconverter.java
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package org.uispec4j;
import javax.swing.*;
import java.awt.*;
/**
* Default implementation for the TreeCellValueConverter interface.
* This converter returns the text displayed by JLabel components only - it will throw an
* exception if another renderer component is not used.
*/
public class DefaultTreeCellValueConverter implements TreeCellValueConverter {
public String getValue(Component renderedComponent, Object modelObject) {
return getLabel(renderedComponent).getText();
}
public boolean isBold(Component renderedComponent, Object modelObject) {
Font font = getLabel(renderedComponent).getFont();
return (font == null)? false : font.isBold();
}
public Color getForeground(Component renderedComponent, Object modelObject) {
return getLabel(renderedComponent).getForeground();
}
protected JLabel getLabel(Component renderedComponent) {
if (!JLabel.class.isInstance(renderedComponent)) {
throw new RuntimeException("Unexpected renderer for jTree: only JLabel is supported");
}
return (JLabel)renderedComponent;
}
}
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