jtulach@102: package org.apidesign.javabeans.with;
jtulach@102: 
jtulach@102: import java.util.ArrayList;
jtulach@102: import java.util.List;
jtulach@102: 
jtulach@102: public abstract class AbstractHighlightsContainer implements HighlightsContainer {
jtulach@102:     private List<HighlightsChangeListener> listeners = new ArrayList<HighlightsChangeListener>();
jtulach@102: 
jtulach@102:     protected AbstractHighlightsContainer() {
jtulach@102:     }
jtulach@102: 
jtulach@102:     public abstract HighlightsSequence getHighlights(int startOffset, int endOffset);
jtulach@102: 
jtulach@102:     public final void addHighlightsChangeListener(HighlightsChangeListener listener) {
jtulach@102:         synchronized (listeners) {
jtulach@102:             listeners.add(listener);
jtulach@102:         }
jtulach@102:     }
jtulach@102: 
jtulach@102:     public final void removeHighlightsChangeListener(HighlightsChangeListener listener) {
jtulach@102:         synchronized (listeners) {
jtulach@102:             listeners.remove(listener);
jtulach@102:         }
jtulach@102:     }
jtulach@102: 
jtulach@102:     protected final void fireHighlightsChange(int changeStartOffset, int changeEndOffset) {
jtulach@102:         List<HighlightsChangeListener> targets;
jtulach@102: 
jtulach@102:         synchronized (listeners) {
jtulach@102:             targets = new ArrayList<HighlightsChangeListener>(listeners);
jtulach@102:         }
jtulach@102: 
jtulach@102:         if (targets.size() > 0) {
jtulach@102:             HighlightsChangeEvent evt = new HighlightsChangeEvent(this, changeStartOffset, changeEndOffset);
jtulach@102: 
jtulach@102:             for (HighlightsChangeListener l : targets) {
jtulach@102:                 l.highlightChanged(evt);
jtulach@102:             }
jtulach@102:         }
jtulach@102:     }
jtulach@102: }