public Result go() { if (quickHeight != 0) { if (rightCTB != null) { throw new IllegalStateException("if quickHeight !=0 then rightCTB == null!"); } } Preconditions.checkNotNull(dest); ColumnTextBuilder currentCtb = dest; List<Element> elements = sequence.getElements(); int i; if (quickHeight != 0) { currentCtb.adjustBottom((float) quickHeight); } if (startWith != null) { currentCtb.copyContentFrom(startWith); float yBefore = currentCtb.getYLine(); int status = currentCtb.go(simulate); if (setHeights) { startContentHeight = yBefore - currentCtb.getYLine(); } if (ColumnText.hasMoreText(status)) { if (rightCTB != null) { // => quickHeight == 0 rightCTB.copyContentFrom(currentCtb); currentCtb = rightCTB; yBefore = currentCtb.getYLine(); status = currentCtb.go(simulate); if (setHeights) { startContentHeight += yBefore - currentCtb.getYLine(); } if (ColumnText.hasMoreText(status)) { return new Result(ColumnText.NO_MORE_COLUMN, startAtIndex, currentCtb); } } else { return new Result(ColumnText.NO_MORE_COLUMN, startAtIndex, currentCtb); } } } // optimisation mode if (quickHeight != 0) { for (i = startAtIndex; i < elements.size(); i++) { Element el = elements.get(i); if (currentCtb.fits(el)) { if (el instanceof SpaceElement) { SpaceElement spaceElement = (SpaceElement) el; spaceElement.add(currentCtb, simulate); currentCtb.go(simulate); } else { currentCtb.addElement(el).go(simulate); } } else { break; } } return new Result(ColumnText.NO_MORE_TEXT, i, null); } for (i = startAtElement; i < elements.size(); i++) { Element el = elements.get(i); float yBefore = currentCtb.getYLine(); if (el instanceof SpaceElement) { SpaceElement space = (SpaceElement) el; if (space.fits(currentCtb, currentCtb.getBottom())) { space.add(currentCtb, simulate); } else { if (currentCtb == dest) { currentCtb = rightCTB; } else if (currentCtb == rightCTB) { return new Result(ColumnText.NO_MORE_COLUMN, i + 1, currentCtb.clearContent()); } } } else { currentCtb.addElement(el); if (ColumnText.hasMoreText(currentCtb.go(simulate))) { if (currentCtb == dest) { if (rightCTB == null) { return new Result(ColumnText.NO_MORE_COLUMN, i + 1, currentCtb); } else { rightCTB.copyContentFrom(currentCtb); currentCtb = rightCTB; final int status = currentCtb.go(simulate); if (ColumnText.hasMoreText(status)) { return new Result(ColumnText.NO_MORE_COLUMN, i + 1, currentCtb); } } } else { return new Result(ColumnText.NO_MORE_COLUMN, i + 1, currentCtb); } } } if (setHeights) { sequence.setHeight(i, yBefore - currentCtb.getYLine()); } } return new Result(ColumnText.NO_MORE_TEXT, elements.size(), null); }