private boolean onAltLeft(KeyboardEvent event) {
if (noContent()) return true;
final Object item = selected();
if (item == null) {
environment.hint(Hints.EMPTY_LINE);
return true;
}
final String line = appearance.getScreenAppearance(item, NONE_APPEARANCE_FLAGS);
NullCheck.notNull(line, "line");
if (line.isEmpty()) {
environment.hint(Hints.EMPTY_LINE);
return true;
}
final int leftBound = appearance.getObservableLeftBound(item);
final int rightBound = appearance.getObservableRightBound(item);
if (hotPointX <= leftBound) {
environment.hint(Hints.BEGIN_OF_LINE);
return true;
}
final String subline = line.substring(leftBound, rightBound);
final WordIterator it = new WordIterator(subline, hotPointX - leftBound);
if (!it.stepBackward()) {
environment.hint(Hints.BEGIN_OF_LINE);
return true;
}
hotPointX = it.pos() + leftBound;
environment.say(it.announce());
environment.onAreaNewHotPoint(this);
return true;
}
protected boolean onBeginListeningQuery(BeginListeningQuery query) {
NullCheck.notNull(query, "query");
final int index = selectedIndex();
if (index < 0) return false;
final int count = model.getItemCount();
if (index >= count) return false;
final Object current = model.getItem(index);
final String text =
appearance
.getScreenAppearance(current, NONE_APPEARANCE_FLAGS)
.substring(hotPointX, appearance.getObservableRightBound(current));
// Log.debug("listen", appearance.getScreenAppearance(current, NONE_APPEARANCE_FLAGS));
// Log.debug("listen", "" + hotPointX);
if (text.isEmpty() && index + 1 >= count) return false;
if (index + 1 < count) {
final Object next = model.getItem(index + 1);
query.answer(
new BeginListeningQuery.Answer(
text, new ListeningInfo(index + 1, appearance.getObservableLeftBound(next))));
} else
query.answer(
new BeginListeningQuery.Answer(
text, new ListeningInfo(index, appearance.getObservableRightBound(current))));
return true;
}
@Override
public String getLine(int index) {
if (isEmpty()) return index == 0 ? noContentStr() : "";
final int itemIndex = getItemIndexOnLine(index);
if (itemIndex < 0 || itemIndex >= model.getItemCount()) return "";
final Object res = model.getItem(itemIndex);
return res != null ? appearance.getScreenAppearance(res, NONE_APPEARANCE_FLAGS) : "";
}
protected String getObservableSubstr(Object item) {
NullCheck.notNull(item, "item");
final String line = appearance.getScreenAppearance(item, NONE_APPEARANCE_FLAGS);
NullCheck.notNull(line, "line");
if (line.isEmpty()) return "";
final int leftBound = Math.min(appearance.getObservableLeftBound(item), line.length());
final int rightBound = Math.min(appearance.getObservableRightBound(item), line.length());
if (leftBound >= rightBound) return "";
return line.substring(leftBound, rightBound);
}
protected boolean onAnnounce() {
environment.playSound(Sounds.INTRO_REGULAR);
String item = "";
if (selected() != null)
item =
appearance.getScreenAppearance(selected(), EnumSet.noneOf(Appearance.Flags.class)).trim();
if (!item.isEmpty()) item = " " + item;
environment.say(getAreaName() + item);
return true;
}
private boolean onAltHome(KeyboardEvent event) {
if (noContent()) return true;
final Object item = selected();
NullCheck.notNull(item, "item");
final String line = appearance.getScreenAppearance(item, NONE_APPEARANCE_FLAGS);
NullCheck.notNull(line, "line");
hotPointX = appearance.getObservableLeftBound(item);
announceChar(line, hotPointX, appearance.getObservableRightBound(item));
environment.onAreaNewHotPoint(this);
return true;
}
@Override
public RegionContent getRegion(int fromX, int fromY, int toX, int toY) {
if (model == null || model.getItemCount() < 0) return null;
if (fromY >= model.getItemCount() || toY > model.getItemCount()) return null;
if (fromY == toY) {
final String line =
appearance.getScreenAppearance(model.getItem(fromY), NONE_APPEARANCE_FLAGS);
if (line == null || line.isEmpty()) return null;
final int fromPos = fromX < line.length() ? fromX : line.length();
final int toPos = toX < line.length() ? toX : line.length();
if (fromPos >= toPos) return null;
return new RegionContent(new String[] {line.substring(fromPos, toPos)});
}
final LinkedList<String> res = new LinkedList<String>();
for (int i = fromY; i < toY; ++i) {
final String line = appearance.getScreenAppearance(model.getItem(i), NONE_APPEARANCE_FLAGS);
res.add(line != null ? line : "");
}
res.add("");
return new RegionContent(res.toArray(new String[res.size()]));
}
@Override
public RegionContent getWholeRegion() {
if (model == null || model.getItemCount() < 0) return null;
final LinkedList<String> res = new LinkedList<String>();
final int count = model.getItemCount();
for (int i = 0; i < count; ++i) {
final String line = appearance.getScreenAppearance(model.getItem(i), NONE_APPEARANCE_FLAGS);
res.add(line != null ? line : "");
}
res.add("");
return new RegionContent(res.toArray(new String[res.size()]));
}
private boolean onAltEnd(KeyboardEvent event) {
if (noContent()) return true;
final Object item = selected();
if (item == null) {
environment.hint(Hints.EMPTY_LINE);
return true;
}
final String line = appearance.getScreenAppearance(item, NONE_APPEARANCE_FLAGS);
NullCheck.notNull(line, "line");
hotPointX = appearance.getObservableRightBound(item);
environment.hint(Hints.END_OF_LINE);
environment.onAreaNewHotPoint(this);
return true;
}
protected boolean onArrowRight(KeyboardEvent event) {
if (noContent()) return true;
final Object item = selected();
NullCheck.notNull(item, "item");
final String line = appearance.getScreenAppearance(item, NONE_APPEARANCE_FLAGS);
NullCheck.notNull(line, "line");
if (line.isEmpty()) {
environment.hint(Hints.EMPTY_LINE);
return true;
}
final int rightBound = appearance.getObservableRightBound(item);
if (hotPointX >= rightBound) {
environment.hint(Hints.END_OF_LINE);
return true;
}
++hotPointX;
announceChar(line, hotPointX, rightBound);
environment.onAreaNewHotPoint(this);
return true;
}