private LayoutController findParentCell() {
LayoutController parent = getParent();
while (parent != null) {
final Object node = parent.getNode();
if (node instanceof Element) {
final Element element = (Element) node;
if (OfficeNamespaces.TABLE_NS.equals(element.getNamespace())
&& "table-cell".equals(element.getType())) {
return parent;
}
}
parent = parent.getParent();
}
return null;
}
protected ImageElementContext createContext() {
if (context == null) {
// Step 1: Find the parent cell.
final LayoutController cellController = findParentCell();
if (cellController == null) {
LOGGER.warn("Image is not contained in a table. Unable to calculate the image-size.");
return null;
}
final Element tableCell = (Element) cellController.getNode();
final int rowSpan =
TextUtilities.parseInt(
(String) tableCell.getAttribute(OfficeNamespaces.TABLE_NS, "number-rows-spanned"), 1);
final int colSpan =
TextUtilities.parseInt(
(String) tableCell.getAttribute(OfficeNamespaces.TABLE_NS, "number-columns-spanned"),
1);
if (rowSpan < 1 || colSpan < 1) {
LOGGER.warn("Rowspan or colspan for image-size calculation was invalid.");
return null;
}
final LayoutController rowController = cellController.getParent();
if (rowController == null) {
LOGGER.warn("Table-Cell has no parent. Unable to calculate the image-size.");
return null;
}
final Section tableRow = (Section) rowController.getNode();
// we are now making the assumption, that the row is a section, that contains the table-cell.
// This breaks the ability to return nodes or to construct reports on the fly, but the
// OO-report format
// is weird anyway and won't support such advanced techniques for the next few centuries...
final int columnPos = findNodeInSection(tableRow, tableCell, OfficeToken.COVERED_TABLE_CELL);
if (columnPos == -1) {
LOGGER.warn(
"Table-Cell is not a direct child of the table-row. Unable to calculate the image-size.");
return null;
}
final LayoutController tableController = rowController.getParent();
if (tableController == null) {
LOGGER.warn("Table-Row has no Table. Unable to calculate the image-size.");
return null;
}
final Section table = (Section) tableController.getNode();
// ok, we got a table, so as next we have to search for the columns now.
final Section columns =
(Section) table.findFirstChild(OfficeNamespaces.TABLE_NS, OfficeToken.TABLE_COLUMNS);
if (columns.getNodeCount() <= columnPos + colSpan) {
// the colspan is to large. The table definition is therefore invalid. We do not try to fix
// this.
LOGGER.warn(
"The Table's defined columns do not match the col-span or col-position. Unable to calculate the image-size.");
return null;
}
final ImageElementContext context = new ImageElementContext(colSpan, rowSpan);
addColumnStyles(context, columns, columnPos, colSpan);
// finally search the styles for the row now.
final int rowPos = findNodeInSection(table, tableRow, null);
if (rowPos == -1) {
LOGGER.warn(
"Table-Cell is not a direct child of the table-row. Unable to calculate the image-size.");
return null;
}
addRowStyles(context, table, rowPos, rowSpan);
this.context = context;
}
return this.context;
}