예제 #1
0
 protected boolean onChar(KeyboardEvent event) {
   if (noContent()) return true;
   final int count = model.getItemCount();
   final char c = event.getChar();
   final String beginning;
   if (selected() != null) {
     if (hotPointX >= appearance.getObservableRightBound(selected())) return false;
     final String name = getObservableSubstr(selected());
     final int pos =
         Math.min(hotPointX - appearance.getObservableLeftBound(selected()), name.length());
     if (pos < 0) return false;
     beginning = name.substring(0, pos);
   } else beginning = "";
   Log.debug("list", "beginning:" + beginning);
   final String mustBegin = beginning + c;
   for (int i = 0; i < count; ++i) {
     Log.debug("list", "checking:" + i);
     final String name = getObservableSubstr(model.getItem(i));
     Log.debug("list", "name:" + name);
     if (!name.startsWith(mustBegin)) continue;
     hotPointY = getLineIndexByItemIndex(i);
     Log.debug("list", "hotPointY:" + hotPointY);
     ++hotPointX;
     appearance.announceItem(model.getItem(hotPointY), NONE_APPEARANCE_FLAGS);
     environment.onAreaNewHotPoint(this);
     return true;
   }
   return false;
 }
예제 #2
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 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;
 }
예제 #3
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 @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) : "";
 }
예제 #4
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 @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()]));
 }
예제 #5
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 /**
  * Searches for the item in the model and sets hot point on it. Given an arbitrary object, this
  * method looks through all items in the model and does a couple of checks: literal pointers
  * equality and a check with {@code equals()} method. If at least one of these checks succeeds,
  * the item is considered equal to the given one, and hot points is set on it.
  *
  * @param obj The object to search for
  * @param introduce Must be true if it is necessary to introduce the object, once it's found
  * @return True if the request object is found, false otherwise
  */
 public boolean select(Object obj, boolean introduce) {
   NullCheck.notNull(obj, "obj");
   for (int i = 0; i < model.getItemCount(); ++i) {
     final Object o = model.getItem(i);
     if (o == null || (obj != o && !obj.equals(o))) continue;
     hotPointY = i;
     hotPointX = appearance.getObservableLeftBound(o);
     environment.onAreaNewHotPoint(this);
     if (introduce) appearance.announceItem(o, NONE_APPEARANCE_FLAGS);
     return true;
   }
   return false;
 }
예제 #6
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 protected boolean onListeningFinishedEvent(ListeningFinishedEvent event) {
   NullCheck.notNull(event, "event");
   if (!(event.getExtraInfo() instanceof ListeningInfo)) return false;
   final ListeningInfo info = (ListeningInfo) event.getExtraInfo();
   final int count = model.getItemCount();
   if (info.itemIndex >= count) return false;
   final Object item = model.getItem(info.itemIndex);
   final int leftBound = appearance.getObservableLeftBound(item);
   final int rightBound = appearance.getObservableRightBound(item);
   if (info.pos < leftBound || info.pos > rightBound) return false;
   hotPointY = getLineIndexByItemIndex(info.itemIndex);
   hotPointX = info.pos;
   environment.onAreaNewHotPoint(this);
   return true;
 }
예제 #7
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 /**
  * Selects the item by its index. Given the non-negative integer value as an index, this method
  * sets the hot point on the item addressed with this index, checking only that index is in
  * appropriate bounds. Index must address the object as a number in the model, ignoring any empty
  * lines.
  *
  * @param index The item index to select
  * @param announce Must be true, if it is necessary to announce the item , once it has been
  *     selected
  * @return True if the index is valid and the item gets hot point on it
  */
 public boolean select(int index, boolean announce) {
   if (index < 0 || index >= model.getItemCount()) return false;
   final int emptyCountAbove = flags.contains(Flags.EMPTY_LINE_TOP) ? 1 : 0;
   hotPointY = index + emptyCountAbove;
   final Object item = model.getItem(index);
   if (item != null) {
     hotPointX = appearance.getObservableLeftBound(item);
     if (announce) appearance.announceItem(item, NONE_APPEARANCE_FLAGS);
   } else {
     hotPointX = 0;
     if (announce) environment.hint(Hints.EMPTY_LINE);
   }
   environment.onAreaNewHotPoint(this);
   return true;
 }
예제 #8
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 protected boolean onMoveHotPoint(MoveHotPointEvent event) {
   NullCheck.notNull(event, "event");
   final int x = event.getNewHotPointX();
   final int y = event.getNewHotPointY();
   final int newY;
   if (y >= getLineCount()) {
     if (event.precisely()) return false;
     newY = getLineCount() - 1;
   } else newY = y;
   if (getItemIndexOnLine(newY) >= 0) {
     // Line with item, not empty
     final Object item = model.getItem(getItemIndexOnLine(newY));
     final int leftBound = appearance.getObservableLeftBound(item);
     final int rightBound = appearance.getObservableRightBound(item);
     if (event.precisely() && (x < leftBound || x > rightBound)) return false;
     hotPointY = newY;
     hotPointX = x;
     if (hotPointX < leftBound) hotPointX = leftBound;
     if (hotPointX > rightBound) hotPointX = rightBound;
     environment.onAreaNewHotPoint(this);
     return true;
   }
   // On empty line
   hotPointY = newY;
   hotPointX = 0;
   environment.onAreaNewHotPoint(this);
   return true;
 }
예제 #9
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 protected boolean noContent() {
   if (model == null || model.getItemCount() < 1) {
     environment.hint(noContentStr(), Hints.NO_CONTENT);
     return true;
   }
   return false;
 }
예제 #10
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 /**
  * Refreshes the content of the list. This method calls {@code refresh()} method of the model and
  * displays new items. It does not produce any speech announcement of the change. HotPointY is
  * preserved if it is possible (meaning, the new number of lines not less than old value of
  * hotPointY), but hotPointX is moved to the beginning of the line.
  */
 public void refresh() {
   model.refresh();
   final int count = model.getItemCount();
   if (count == 0) {
     hotPointX = 0;
     hotPointY = 0;
     environment.onAreaNewContent(this);
     environment.onAreaNewHotPoint(this);
     return;
   }
   hotPointY = hotPointY < count ? hotPointY : count - 1;
   final Object item = model.getItem(hotPointY);
   if (item != null) hotPointX = appearance.getObservableLeftBound(item);
   else hotPointX = 0;
   environment.onAreaNewContent(this);
   environment.onAreaNewHotPoint(this);
 }
예제 #11
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  @Override
  public int getLineCount() {
    final int emptyCountTop = flags.contains(Flags.EMPTY_LINE_TOP) ? 1 : 0;
    final int emptyCountBottom = flags.contains(Flags.EMPTY_LINE_BOTTOM) ? 1 : 0;

    final int res = model.getItemCount() + emptyCountTop + emptyCountBottom;
    return res >= 1 ? res : 1;
  }
예제 #12
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 public void resetHotPoint(boolean introduce) {
   hotPointY = 0;
   final int count = model.getItemCount();
   if (count < 1) {
     hotPointX = 0;
     environment.onAreaNewHotPoint(this);
     return;
   }
   final Object item = model.getItem(0);
   if (item != null) {
     hotPointX = item != null ? appearance.getObservableLeftBound(item) : 0;
     if (introduce) appearance.announceItem(item, NONE_APPEARANCE_FLAGS);
   } else {
     hotPointX = 0;
     environment.hint(Hints.EMPTY_LINE);
   }
   environment.onAreaNewHotPoint(this);
 }
예제 #13
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 protected boolean onInsert(KeyboardEvent event) {
   final int index = selectedIndex();
   if (index < 0) return false;
   if (!model.toggleMark(index)) return false;
   environment.onAreaNewContent(this);
   if (hotPointY + 1 < getLineCount()) {
     ++hotPointY;
     onNewHotPointY(false);
   }
   return true;
 }
예제 #14
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 @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()]));
 }
예제 #15
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 protected boolean onTransition(Transition.Type type, int hint, boolean briefAnnouncement) {
   NullCheck.notNull(type, "type");
   //	NullCheck.notNull(hint, "hint");
   if (noContent()) return true;
   final int index = selectedIndex();
   final int count = model.getItemCount();
   final int emptyCountTop = flags.contains(Flags.EMPTY_LINE_TOP) ? 1 : 0;
   final Transition.State current;
   if (index >= 0) current = new Transition.State(index);
   else if (flags.contains(Flags.EMPTY_LINE_TOP) && hotPointY == 0)
     current = new Transition.State(Transition.State.Type.EMPTY_LINE_TOP);
   else if (flags.contains(Flags.EMPTY_LINE_BOTTOM) && hotPointY == count + emptyCountTop)
     current = new Transition.State(Transition.State.Type.EMPTY_LINE_BOTTOM);
   else return false;
   final Transition.State newState =
       transition.transition(
           type,
           current,
           count,
           flags.contains(Flags.EMPTY_LINE_TOP),
           flags.contains(Flags.EMPTY_LINE_BOTTOM));
   NullCheck.notNull(newState, "newState");
   Log.debug("list", "newState=" + newState.type);
   switch (newState.type) {
     case NO_TRANSITION:
       environment.hint(hint);
       return true;
     case EMPTY_LINE_TOP:
       if (!flags.contains(Flags.EMPTY_LINE_TOP)) return false;
       hotPointY = 0;
       break;
     case EMPTY_LINE_BOTTOM:
       if (!flags.contains(Flags.EMPTY_LINE_BOTTOM)) return false;
       hotPointY = count + emptyCountTop;
       break;
     case ITEM_INDEX:
       if (newState.itemIndex < 0 || newState.itemIndex >= count) return false;
       hotPointY = newState.itemIndex + emptyCountTop;
       break;
     default:
       return false;
   }
   onNewHotPointY(briefAnnouncement);
   return true;
 }
예제 #16
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 protected void onNewHotPointY(boolean briefAnnouncement) {
   final int index = selectedIndex();
   if (index < 0) {
     environment.hint(Hints.EMPTY_LINE);
     hotPointX = 0;
     environment.onAreaNewHotPoint(this);
     return;
   }
   final Object item = model.getItem(index);
   if (item == null) {
     environment.hint(Hints.EMPTY_LINE);
     hotPointX = 0;
     environment.onAreaNewHotPoint(this);
     return;
   }
   appearance.announceItem(
       item, briefAnnouncement ? BRIEF_ANNOUNCEMENT_ONLY : NONE_APPEARANCE_FLAGS);
   hotPointX = appearance.getObservableLeftBound(item);
   environment.onAreaNewHotPoint(this);
 }
예제 #17
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 /**
  * Returns the object in the model corresponding to current hot point position. If the model is
  * empty or hot point is on an empty line, this method always returns {@code null}.
  *
  * @return The object in the model associated with the currently selected line or {@code null} if
  *     there is no any
  */
 public final Object selected() {
   final int index = selectedIndex();
   return (index >= 0 && index < model.getItemCount()) ? model.getItem(index) : null;
 }
예제 #18
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 public int getItemIndexOnLine(int index) {
   final int linesTop = flags.contains(Flags.EMPTY_LINE_TOP) ? 1 : 0;
   if (index < linesTop) return -1;
   if (index - linesTop < model.getItemCount()) return index - linesTop;
   return -1;
 }
예제 #19
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 public int getLineIndexByItemIndex(int index) {
   final int count = model.getItemCount();
   if (index < 0 || index >= count) return -1;
   final int linesTop = flags.contains(Flags.EMPTY_LINE_TOP) ? 1 : 0;
   return index + linesTop;
 }
예제 #20
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 public boolean isEmpty() {
   return model.getItemCount() <= 0;
 }