1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/samples/javabeans/src/org/apidesign/javabeans/with/AbstractHighlightsContainer.java	Sat Jun 14 09:54:22 2008 +0200
     1.3 @@ -0,0 +1,41 @@
     1.4 +package org.apidesign.javabeans.with;
     1.5 +
     1.6 +import java.util.ArrayList;
     1.7 +import java.util.List;
     1.8 +
     1.9 +public abstract class AbstractHighlightsContainer implements HighlightsContainer {
    1.10 +    private List<HighlightsChangeListener> listeners = new ArrayList<HighlightsChangeListener>();
    1.11 +
    1.12 +    protected AbstractHighlightsContainer() {
    1.13 +    }
    1.14 +
    1.15 +    public abstract HighlightsSequence getHighlights(int startOffset, int endOffset);
    1.16 +
    1.17 +    public final void addHighlightsChangeListener(HighlightsChangeListener listener) {
    1.18 +        synchronized (listeners) {
    1.19 +            listeners.add(listener);
    1.20 +        }
    1.21 +    }
    1.22 +
    1.23 +    public final void removeHighlightsChangeListener(HighlightsChangeListener listener) {
    1.24 +        synchronized (listeners) {
    1.25 +            listeners.remove(listener);
    1.26 +        }
    1.27 +    }
    1.28 +
    1.29 +    protected final void fireHighlightsChange(int changeStartOffset, int changeEndOffset) {
    1.30 +        List<HighlightsChangeListener> targets;
    1.31 +
    1.32 +        synchronized (listeners) {
    1.33 +            targets = new ArrayList<HighlightsChangeListener>(listeners);
    1.34 +        }
    1.35 +
    1.36 +        if (targets.size() > 0) {
    1.37 +            HighlightsChangeEvent evt = new HighlightsChangeEvent(this, changeStartOffset, changeEndOffset);
    1.38 +
    1.39 +            for (HighlightsChangeListener l : targets) {
    1.40 +                l.highlightChanged(evt);
    1.41 +            }
    1.42 +        }
    1.43 +    }
    1.44 +}