private boolean onAltEnd(KeyboardEvent event) {
if (noContentCheck()) return true;
if (hotPointY <= 0 || hotPointY > items.length || items[hotPointY - 1] == null) {
luwrain.hint(Hints.EMPTY_LINE);
return true;
}
final Object item = items[hotPointY - 1];
final String line = appearance.getScreenAppearance(item, 0);
int leftBound = appearance.getObservableLeftBound(item);
if (leftBound < 0) leftBound = 0;
if (leftBound > line.length()) leftBound = line.length();
int rightBound = appearance.getObservableRightBound(item);
if (rightBound < 0) rightBound = 0;
if (rightBound >= line.length()) rightBound = line.length();
if (leftBound >= rightBound) {
luwrain.hint(Hints.EMPTY_LINE);
return true;
}
if (hotPointX <= leftBound) {
luwrain.hint(Hints.BEGIN_OF_LINE);
return true;
}
hotPointX = rightBound;
luwrain.hint(Hints.END_OF_LINE);
luwrain.onAreaNewHotPoint(this);
return true;
}
private boolean onAltLeft(KeyboardEvent event) {
if (noContentCheck()) return true;
if (hotPointY <= 0 || hotPointY > items.length || items[hotPointY - 1] == null) {
luwrain.hint(Hints.EMPTY_LINE);
return true;
}
final Object item = items[hotPointY - 1];
final String line = appearance.getScreenAppearance(item, 0);
int leftBound = appearance.getObservableLeftBound(item);
if (leftBound < 0) leftBound = 0;
if (leftBound > line.length()) leftBound = line.length();
int rightBound = appearance.getObservableRightBound(item);
if (rightBound < 0) rightBound = 0;
if (rightBound >= line.length()) rightBound = line.length();
if (leftBound >= rightBound) {
luwrain.hint(Hints.EMPTY_LINE);
return true;
}
if (hotPointX <= leftBound) {
luwrain.hint(Hints.BEGIN_OF_LINE);
return true;
}
final String subline = line.substring(leftBound, rightBound);
WordIterator it = new WordIterator(subline, hotPointX - leftBound);
if (!it.stepBackward()) {
luwrain.hint(Hints.BEGIN_OF_LINE);
return true;
}
hotPointX = it.pos() + leftBound;
luwrain.say(it.announce());
luwrain.onAreaNewHotPoint(this);
return true;
}
private boolean noContentCheck() {
if (items == null || items.length <= 0) {
luwrain.hint(luwrain.i18n().staticStr(LangStatic.LIST_NO_CONTENT), Hints.NO_CONTENT);
return true;
}
return false;
}
private void onNewHotPointY(boolean briefIntroduction) {
if (hotPointY <= 0) {
hotPointX = 0;
luwrain.hint(Hints.EMPTY_LINE);
luwrain.onAreaNewHotPoint(this);
return;
}
final Object item = items[hotPointY - 1];
luwrain.playSound(Sounds.NEW_LIST_ITEM);
if (item == null) {
hotPointX = 0;
luwrain.hint(Hints.EMPTY_LINE);
} else {
hotPointX = getInitialHotPointX(item);
appearance.introduceItem(item, briefIntroduction ? ListItemAppearance.BRIEF : 0);
}
luwrain.onAreaNewHotPoint(this);
}
private boolean onArrowUp(KeyboardEvent event, boolean briefIntroduction) {
if (noContentCheck()) return true;
if (hotPointY <= 0) {
luwrain.hint(Hints.NO_ITEMS_ABOVE);
return true;
}
--hotPointY;
onNewHotPointY(briefIntroduction);
return true;
}
private boolean onArrowDown(KeyboardEvent event, boolean briefIntroduction) {
if (noContentCheck()) return true;
if (hotPointY >= items.length) {
luwrain.hint(Hints.NO_ITEMS_BELOW);
return true;
}
++hotPointY;
onNewHotPointY(briefIntroduction);
return true;
}
private boolean onPageUp(KeyboardEvent event, boolean briefIntroduction) {
if (noContentCheck()) return true;
if (hotPointY <= 0) {
luwrain.hint(Hints.NO_ITEMS_ABOVE);
return true;
}
final int visibleHeight = luwrain.getAreaVisibleHeight(this);
if (visibleHeight < 1) return false;
if (hotPointY > visibleHeight) hotPointY -= visibleHeight;
else hotPointY = 0;
onNewHotPointY(briefIntroduction);
return true;
}
private boolean onPageDown(KeyboardEvent event, boolean briefIntroduction) {
if (noContentCheck()) return true;
if (hotPointY >= items.length) {
luwrain.hint(Hints.NO_ITEMS_BELOW);
return true;
}
final int visibleHeight = luwrain.getAreaVisibleHeight(this);
if (visibleHeight < 1) return false;
hotPointY += visibleHeight;
if (hotPointY > items.length) hotPointY = items.length;
onNewHotPointY(briefIntroduction);
return true;
}