Active Visual Scaffolding by Charles Kelemen and Eugene Turk
More of the infrastructure code follows:
<![CDATA[
public void setArraySize(int size) {
arraySize = size;
displayedArray = new JButton[arraySize];
}
public void setArray(int[] dataArray) {
studentArray = dataArray;
}
public void initArray() {
arrayPanel.add(Box.createRigidArea(new Dimension(5, 0)));
if (arraySize > 0)
for (int i = 0; i < arraySize; i++) {
displayedArray[i] = new JButton("" + studentArray[i]);
arrayPanel.add(displayedArray[i]);
}
}
public void redraw() {
for (int i = 0; i < arraySize; i++) {
displayedArray[i].setText("" + studentArray[i]);
}
pause();
}
....
public void highlight(int index, Color col, int delay) {
displayedArray[index].setBackground(col);
try {
Thread.sleep (delay);
}
catch (InterruptedException e) {
System.out.println("Error: sleep in highlight interrupted.\n");
}
}
public void unhighlight(int unhighlightElement) {
pause();
displayedArray[unhighlightElement].setBackground(Color.lightGray);
}
]]>
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