private void previousLine() {
if (lines == null || currentLine == null) {
return;
}
int index = lines.indexOf(currentLine);
if (index == -1) {
return;
}
index--;
if (index < 0) {
index = lines.size() - 1;
}
currentLine = (Line) lines.get(index);
updateLabel();
fireLineSelection();
}
private void nextLine() {
if (lines == null || currentLine == null) {
return;
}
int index = lines.indexOf(currentLine);
if (index == -1) {
return;
}
index++;
if (index >= lines.size()) {
index = 0;
}
currentLine = (Line) lines.get(index);
updateLabel();
fireLineSelection();
}