package javax.swing;
-import gnu.classpath.NotImplementedException;
-
import java.awt.Component;
import java.awt.Font;
+import java.awt.FontMetrics;
import java.awt.Image;
+import java.awt.Insets;
import java.awt.Point;
import java.awt.Rectangle;
+import java.awt.Shape;
import java.awt.event.KeyEvent;
import java.beans.PropertyChangeEvent;
import javax.accessibility.AccessibleRole;
import javax.accessibility.AccessibleText;
import javax.swing.plaf.LabelUI;
+import javax.swing.plaf.basic.BasicHTML;
import javax.swing.text.AttributeSet;
+import javax.swing.text.BadLocationException;
+import javax.swing.text.Position;
import javax.swing.text.SimpleAttributeSet;
+import javax.swing.text.View;
/**
* A component that displays a static text message and/or an icon.
* @return the bounding box of the character at the specified index
*/
public Rectangle getCharacterBounds(int index)
- throws NotImplementedException
{
- // FIXME: Implement this correctly.
- return new Rectangle();
+ Rectangle bounds = null;
+ View view = (View) getClientProperty(BasicHTML.propertyKey);
+ if (view != null)
+ {
+ Rectangle textR = getTextRectangle();
+ try
+ {
+ Shape s = view.modelToView(index, textR, Position.Bias.Forward);
+ bounds = s.getBounds();
+ }
+ catch (BadLocationException ex)
+ {
+ // Can't return something reasonable in this case.
+ }
+ }
+ return bounds;
+ }
+
+ /**
+ * Returns the rectangle inside the JLabel, in which the actual text is
+ * rendered. This method has been adopted from the Mauve testcase
+ * gnu.testlet.javax.swing.JLabel.AccessibleJLabel.getCharacterBounds.
+ *
+ * @return the rectangle inside the JLabel, in which the actual text is
+ * rendered
+ */
+ private Rectangle getTextRectangle()
+ {
+ JLabel l = JLabel.this;
+ Rectangle textR = new Rectangle();
+ Rectangle iconR = new Rectangle();
+ Insets i = l.getInsets();
+ int w = l.getWidth();
+ int h = l.getHeight();
+ Rectangle viewR = new Rectangle(i.left, i.top, w - i.left - i.right,
+ h - i.top - i.bottom);
+ FontMetrics fm = l.getFontMetrics(l.getFont());
+ SwingUtilities.layoutCompoundLabel(l, fm, l.getText(), l.getIcon(),
+ l.getVerticalAlignment(),
+ l.getHorizontalAlignment(),
+ l.getVerticalTextPosition(),
+ l.getHorizontalTextPosition(),
+ viewR, iconR, textR,
+ l.getIconTextGap());
+ return textR;
}
/**
* point
*/
public int getIndexAtPoint(Point point)
- throws NotImplementedException
{
- // FIXME: Implement this correctly.
- return 0;
+ int index = -1;
+ View view = (View) getClientProperty(BasicHTML.propertyKey);
+ if (view != null)
+ {
+ Rectangle r = getTextRectangle();
+ index = view.viewToModel(point.x, point.y, r, new Position.Bias[0]);
+ }
+ return index;
}
}
* Creates a new vertically and horizontally centered
* JLabel object with no text and the given icon.
*
- * @param image The icon to use with the label.
+ * @param image The icon to use with the label, <code>null</code> permitted.
*/
public JLabel(Icon image)
{
- this("", image, CENTER);
+ this(null, image, CENTER);
}
/**
* given icon and horizontal alignment. By default, the text is TRAILING
* the image.
*
- * @param image The icon to use with the label.
- * @param horizontalAlignment The horizontal alignment of the label.
+ * @param image The icon to use with the label, <code>null</code> premitted.
+ * @param horizontalAlignment The horizontal alignment of the label, must be
+ * either <code>CENTER</code>, <code>LEFT</code>, <code>RIGHT</code>,
+ * <code>LEADING</code> or <code>TRAILING</code>.
*/
public JLabel(Icon image, int horizontalAlignment)
{
- this("", image, horizontalAlignment);
+ this(null, image, horizontalAlignment);
}
/**
* Creates a new horizontally leading and vertically centered JLabel
* object with no icon and the given text.
*
- * @param text The text to use with the label.
+ * @param text The text to use with the label, <code>null</code> permitted.
*/
public JLabel(String text)
{
* Creates a new vertically centered JLabel object with no icon and the
* given text and horizontal alignment.
*
- * @param text The text to use with the label.
- * @param horizontalAlignment The horizontal alignment of the label.
+ * @param text The text to use with the label, <code>null</code> permitted.
+ * @param horizontalAlignment The horizontal alignment of the label, must be
+ * either <code>CENTER</code>, <code>LEFT</code>, <code>RIGHT</code>,
+ * <code>LEADING</code> or <code>TRAILING</code>.
*/
public JLabel(String text, int horizontalAlignment)
{
* Creates a new vertically centered JLabel object with the given text,
* icon, and horizontal alignment.
*
- * @param text The text to use with the label.
- * @param icon The icon to use with the label.
- * @param horizontalAlignment The horizontal alignment of the label.
+ * @param text The text to use with the label, <code>null</code> permitted.
+ * @param icon The icon to use with the label, <code>null</code> premitted.
+ * @param horizontalAlignment The horizontal alignment of the label, must be
+ * either <code>CENTER</code>, <code>LEFT</code>, <code>RIGHT</code>,
+ * <code>LEADING</code> or <code>TRAILING</code>.
*/
public JLabel(String text, Icon icon, int horizontalAlignment)
{
+ if (horizontalAlignment != SwingConstants.LEFT
+ && horizontalAlignment != SwingConstants.RIGHT
+ && horizontalAlignment != SwingConstants.CENTER
+ && horizontalAlignment != SwingConstants.LEADING
+ && horizontalAlignment != SwingConstants.TRAILING)
+ throw new IllegalArgumentException();
+
this.text = text;
this.icon = icon;
this.horizontalAlignment = horizontalAlignment;
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