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package gjt;
import java.awt.*;
import java.util.Enumeration;
import java.util.Hashtable;
/**
* A panel which contains a collection of ImageButtons,
* arranged either horizontally or vertically.<p>
*
* Handling of mouse events is delegated to an image button
* panel controller. By default, an image button panel is
* outfitted with an instance of RadioImageButtonPanelController
* which implements mutually exclusive selection behavior.
*
* @version 1.0, Apr 1 1996
* @author David Geary
* @see ImageButton
* @see RadioImageButtonPanelController
* @see gjt.test.ToolbarTest
*/
public class ImageButtonPanel extends Panel {
static private int _defaultGap = 5;
private Hashtable nameAndButtonPairs = new Hashtable();
private ImageButtonPanelController controller;
public ImageButtonPanel(Orientation orient) {
this(orient, Orientation.CENTER,
Orientation.CENTER, _defaultGap);
}
public ImageButtonPanel(Orientation orient, int gap) {
this(orient, Orientation.CENTER,
Orientation.CENTER, gap);
}
public ImageButtonPanel(Orientation orient,
Orientation horient,
Orientation vorient, int gap) {
Assert.notFalse(orient == Orientation.HORIZONTAL ||
orient == Orientation.VERTICAL);
if(orient == Orientation.VERTICAL)
setLayout(new ColumnLayout(horient, vorient, gap));
else
setLayout(new RowLayout(horient, vorient, gap));
setController(
new RadioImageButtonPanelController(this));
}
public void setController(ImageButtonPanelController c) {
this.controller = c;
}
public Insets insets() { return new Insets(10,10,10,10); }
public ImageButton add(Image image, String name) {
ImageButton button = new ImageButton(image);
add(button);
nameAndButtonPairs.put(name, button);
return button;
}
public ImageButton add(Image image) {
return add(image, "noname");
}
public void add(ImageButton button) {
add(button, "noname");
}
public void add(ImageButton button, String name) {
nameAndButtonPairs.put(name, button);
super.add(button);
}
public ImageButton getButtonByName(String name) {
return (ImageButton)nameAndButtonPairs.get(name);
}
public String getButtonName(ImageButton button) {
Enumeration e = nameAndButtonPairs.keys();
ImageButton nbutt;
String nstr;
while(e.hasMoreElements()) {
nstr = (String)e.nextElement();
nbutt = (ImageButton)nameAndButtonPairs.get(nstr);
if(nbutt.equals(button))
return nstr;
}
return null;
}
public void addSpacer(int sizeInPixels) {
Assert.notFalse(sizeInPixels > 0);
Canvas spacer = new Canvas();
spacer.resize(sizeInPixels, sizeInPixels);
add(spacer);
}
public boolean mouseDown(Event event, int x, int y) {
return controller != null ?
controller.mouseDown(event,x,y) : false;
}
public boolean mouseDrag(Event event, int x, int y) {
return controller != null ?
controller.mouseDrag(event,x,y) : false;
}
public boolean mouseUp(Event event, int x, int y) {
return controller != null ?
controller.mouseUp(event,x,y) : false;
}
}
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