PdfTable is an object that contains the graphics and text of a table.
*
* @see com.lowagie.text.Table
* @see com.lowagie.text.Row
* @see com.lowagie.text.Cell
* @see PdfCell
*/
public class PdfTable extends Rectangle {
// membervariables
/** this is the number of columns in the table. */
private int columns;
/** this is the ArrayList with all the cell of the table header. */
private ArrayList headercells;
/** this is the ArrayList with all the cells in the table. */
private ArrayList cells;
/** Original table used to build this object*/
protected Table table;
/** Cached column widths. */
protected float[] positions;
// constructors
/**
* Constructs a PdfTable-object.
*
* @param table a Table
* @param left the left border on the page
* @param right the right border on the page
* @param top the start position of the top of the table
* @param supportUpdateRowAdditions
* if true, table rows will be deleted after building the PdfTable table,
* in order to preserve memory and detect future row additions
*/
PdfTable(Table table, float left, float right, float top, boolean supportUpdateRowAdditions) {
// constructs a Rectangle (the bottomvalue will be changed afterwards)
super(left, top, right, top);
this.table = table;
table.complete();
// copying the attributes from class Table
cloneNonPositionParameters(table);
this.columns = table.columns();
positions = table.getWidths(left, right - left);
// initialisation of some parameters
setLeft(positions[0]);
setRight(positions[positions.length - 1]);
headercells = new ArrayList();
cells = new ArrayList();
updateRowAdditionsInternal();
if (supportUpdateRowAdditions) {
table.deleteAllRows();
}
}
// methods
/**
* Updates the table row additions in the underlying table object and deletes all table rows,
* in order to preserve memory and detect future row additions.
* Pre-requisite: the object must have been built with the parameter supportUpdateRowAdditions equals to true.
*/
void updateRowAdditions() {
table.complete();
updateRowAdditionsInternal();
table.deleteAllRows();
}
/**
* Updates the table row additions in the underlying table object
*/
private void updateRowAdditionsInternal() {
// correct table : fill empty cells/ parse table in table
Row row;
int prevRows = rows();
int rowNumber = 0;
int groupNumber = 0;
boolean groupChange;
int firstDataRow = table.firstDataRow();
Cell cell;
PdfCell currentCell;
ArrayList newCells = new ArrayList();
int rows = table.size() + 1;
float[] offsets = new float[rows];
for (int i = 0; i < rows; i++) {
offsets[i] = bottom();
}
// loop over all the rows
for (Iterator rowIterator = table.iterator(); rowIterator.hasNext(); ) {
groupChange = false;
row = (Row) rowIterator.next();
if (row.isEmpty()) {
if (rowNumber < rows - 1 && offsets[rowNumber + 1] > offsets[rowNumber]) offsets[rowNumber + 1] = offsets[rowNumber];
}
else {
for(int i = 0; i < row.columns(); i++) {
cell = (Cell) row.getCell(i);
if (cell != null) {
currentCell = new PdfCell(cell, rowNumber+prevRows, positions[i], positions[i + cell.colspan()], offsets[rowNumber], cellspacing(), cellpadding());
try {
if (offsets[rowNumber] - currentCell.height() - cellpadding() < offsets[rowNumber + currentCell.rowspan()]) {
offsets[rowNumber + currentCell.rowspan()] = offsets[rowNumber] - currentCell.height() - cellpadding();
}
}
catch(ArrayIndexOutOfBoundsException aioobe) {
if (offsets[rowNumber] - currentCell.height() < offsets[rows - 1]) {
offsets[rows - 1] = offsets[rowNumber] - currentCell.height();
}
}
if (rowNumber < firstDataRow) {
currentCell.setHeader();
headercells.add(currentCell);
}
currentCell.setGroupNumber(groupNumber);
groupChange |= cell.getGroupChange();
newCells.add(currentCell);
}
}
}
rowNumber++;
if( groupChange ) groupNumber++;
}
// loop over all the cells
int n = newCells.size();
for (int i = 0; i < n; i++) {
currentCell = (PdfCell) newCells.get(i);
try {
currentCell.setBottom(offsets[currentCell.rownumber()-prevRows + currentCell.rowspan()]);
}
catch(ArrayIndexOutOfBoundsException aioobe) {
currentCell.setBottom(offsets[rows - 1]);
}
}
cells.addAll(newCells);
setBottom(offsets[rows - 1]);
}
/**
* Get the number of rows
*/
int rows() {
return cells.size() == 0 ? 0 : ((PdfCell)cells.get(cells.size()-1)).rownumber()+1;
}
/** @see com.lowagie.text.Element#type() */
public int type() {
return Element.TABLE;
}
/**
* Returns the arraylist with the cells of the table header.
*
* @return an ArrayList
*/
ArrayList getHeaderCells() {
return headercells;
}
/**
* Checks if there is a table header.
*
* @return an ArrayList
*/
boolean hasHeader() {
return headercells.size() > 0;
}
/**
* Returns the arraylist with the cells of the table.
*
* @return an ArrayList
*/
ArrayList getCells() {
return cells;
}
/**
* Returns the number of columns of the table.
*
* @return the number of columns
*/
int columns() {
return columns;
}
/**
* Returns the cellpadding of the table.
*
* @return the cellpadding
*/
final float cellpadding() {
return table.cellpadding();
}
/**
* Returns the cellspacing of the table.
*
* @return the cellspacing
*/
final float cellspacing() {
return table.cellspacing();
}
/**
* Checks if this Table has to fit a page.
*
* @return true if the table may not be split
*/
public final boolean hasToFitPageTable() {
return table.hasToFitPageTable();
}
/**
* Checks if the cells of this Table have to fit a page.
*
* @return true if the cells may not be split
*/
public final boolean hasToFitPageCells() {
return table.hasToFitPageCells();
}
/**
* Gets the offset of this table.
*
* @return the space between this table and the previous element.
*/
public float getOffset() {
return table.getOffset();
}
}