boolean hasAPartAfterPage(ZLTextPage page) {
   if (isEmpty()) {
     return false;
   }
   final ZLTextElementArea lastPageArea = page.TextElementMap.getLastArea();
   if (lastPageArea == null) {
     return false;
   }
   final int cmp = myRightMostRegionSoul.compareTo(lastPageArea);
   return cmp > 0 || (cmp == 0 && !lastPageArea.isLastInElement());
 }
 boolean hasAPartBeforePage(ZLTextPage page) {
   if (isEmpty()) {
     return false;
   }
   final ZLTextElementArea firstPageArea = page.TextElementMap.getFirstArea();
   if (firstPageArea == null) {
     return false;
   }
   final int cmp = myLeftMostRegionSoul.compareTo(firstPageArea);
   return cmp < 0 || (cmp == 0 && !firstPageArea.isFirstInElement());
 }
 public ZLTextElementArea getEndArea(ZLTextPage page) {
   if (isEmpty()) {
     return null;
   }
   final ZLTextElementAreaVector vector = page.TextElementMap;
   final ZLTextRegion region = vector.getRegion(myRightMostRegionSoul);
   if (region != null) {
     return region.getLastArea();
   }
   final ZLTextElementArea lastArea = vector.getLastArea();
   if (lastArea != null && myRightMostRegionSoul.compareTo(lastArea) >= 0) {
     return lastArea;
   }
   return null;
 }
 public ZLTextElementArea getStartArea(ZLTextPage page) {
   if (isEmpty()) {
     return null;
   }
   final ZLTextElementAreaVector vector = page.TextElementMap;
   final ZLTextRegion region = vector.getRegion(myLeftMostRegionSoul);
   if (region != null) {
     return region.getFirstArea();
   }
   final ZLTextElementArea firstArea = vector.getFirstArea();
   if (firstArea != null && myLeftMostRegionSoul.compareTo(firstArea) <= 0) {
     return firstArea;
   }
   return null;
 }
  void expandTo(int x, int y) {
    if (isEmpty()) {
      return;
    }

    final ZLTextElementAreaVector vector = myView.myCurrentPage.TextElementMap;
    final ZLTextElementArea firstArea = vector.getFirstArea();
    final ZLTextElementArea lastArea = vector.getLastArea();
    if (firstArea != null && y < firstArea.YStart) {
      if (myScroller != null && myScroller.scrollsForward()) {
        myScroller.stop();
        myScroller = null;
      }
      if (myScroller == null) {
        myScroller = new Scroller(false, x, y);
        return;
      }
    } else if (lastArea != null
        && y + ZLTextSelectionCursor.getHeight() / 2 + ZLTextSelectionCursor.getAccent() / 2
            > lastArea.YEnd) {
      if (myScroller != null && !myScroller.scrollsForward()) {
        myScroller.stop();
        myScroller = null;
      }
      if (myScroller == null) {
        myScroller = new Scroller(true, x, y);
        return;
      }
    } else {
      if (myScroller != null) {
        myScroller.stop();
        myScroller = null;
      }
    }

    if (myScroller != null) {
      myScroller.setXY(x, y);
    }

    ZLTextRegion region =
        myView.findRegion(x, y, ZLTextView.MAX_SELECTION_DISTANCE, ZLTextRegion.AnyRegionFilter);
    if (region == null && myScroller != null) {
      region = myView.findRegion(x, y, ZLTextRegion.AnyRegionFilter);
    }
    if (region == null) {
      return;
    }

    final ZLTextRegion.Soul soul = region.getSoul();
    if (myCursorInMovement == ZLTextSelectionCursor.Right) {
      if (myLeftMostRegionSoul.compareTo(soul) <= 0) {
        myRightMostRegionSoul = soul;
      } else {
        myRightMostRegionSoul = myLeftMostRegionSoul;
        myLeftMostRegionSoul = soul;
        myCursorInMovement = ZLTextSelectionCursor.Left;
      }
    } else {
      if (myRightMostRegionSoul.compareTo(soul) >= 0) {
        myLeftMostRegionSoul = soul;
      } else {
        myLeftMostRegionSoul = myRightMostRegionSoul;
        myRightMostRegionSoul = soul;
        myCursorInMovement = ZLTextSelectionCursor.Right;
      }
    }

    if (myCursorInMovement == ZLTextSelectionCursor.Right) {
      if (hasAPartAfterPage(myView.myCurrentPage)) {
        myView.scrollPage(true, ZLTextView.ScrollingMode.SCROLL_LINES, 1);
        myView.Application.getViewWidget().reset();
        myView.preparePaintInfo();
      }
    } else {
      if (hasAPartBeforePage(myView.myCurrentPage)) {
        myView.scrollPage(false, ZLTextView.ScrollingMode.SCROLL_LINES, 1);
        myView.Application.getViewWidget().reset();
        myView.preparePaintInfo();
      }
    }
  }
 boolean isAreaSelected(ZLTextElementArea area) {
   return !isEmpty()
       && myLeftMostRegionSoul.compareTo(area) <= 0
       && myRightMostRegionSoul.compareTo(area) >= 0;
 }