public void expandColumn(short columnNumber) {
int idx = findColumnIdx(columnNumber, 0);
if (idx == -1) return;
// If it is already exapanded do nothing.
if (!isColumnGroupCollapsed(idx)) return;
// Find the start of the group.
int startIdx = findStartOfColumnOutlineGroup(idx);
ColumnInfoRecord columnInfo = getColInfo(startIdx);
// Find the end of the group.
int endIdx = findEndOfColumnOutlineGroup(idx);
ColumnInfoRecord endColumnInfo = getColInfo(endIdx);
// expand:
// colapsed bit must be unset
// hidden bit gets unset _if_ surrounding groups are expanded you can determine
// this by looking at the hidden bit of the enclosing group. You will have
// to look at the start and the end of the current group to determine which
// is the enclosing group
// hidden bit only is altered for this outline level. ie. don't uncollapse contained groups
if (!isColumnGroupHiddenByParent(idx)) {
for (int i = startIdx; i <= endIdx; i++) {
if (columnInfo.getOutlineLevel() == getColInfo(i).getOutlineLevel())
getColInfo(i).setHidden(false);
}
}
// Write collapse field
setColumn((short) (columnInfo.getLastColumn() + 1), null, null, null, null, Boolean.FALSE);
}
public void collapseColInfoRecords(int columnIdx) {
if (columnIdx == 0) return;
ColumnInfoRecord previousCol = (ColumnInfoRecord) records.get(columnIdx - 1);
ColumnInfoRecord currentCol = (ColumnInfoRecord) records.get(columnIdx);
boolean adjacentColumns = previousCol.getLastColumn() == currentCol.getFirstColumn() - 1;
if (!adjacentColumns) return;
boolean columnsMatch =
previousCol.getXFIndex() == currentCol.getXFIndex()
&& previousCol.getOptions() == currentCol.getOptions()
&& previousCol.getColumnWidth() == currentCol.getColumnWidth();
if (columnsMatch) {
previousCol.setLastColumn(currentCol.getLastColumn());
records.remove(columnIdx);
}
}
public void collapseColumn(short columnNumber) {
int idx = findColumnIdx(columnNumber, 0);
if (idx == -1) return;
// Find the start of the group.
ColumnInfoRecord columnInfo =
(ColumnInfoRecord) records.get(findStartOfColumnOutlineGroup(idx));
// Hide all the columns until the end of the group
columnInfo = writeHidden(columnInfo, idx, true);
// Write collapse field
setColumn((short) (columnInfo.getLastColumn() + 1), null, null, null, null, Boolean.TRUE);
}
public int findColumnIdx(int column, int fromIdx) {
if (column < 0) throw new IllegalArgumentException("column parameter out of range: " + column);
if (fromIdx < 0)
throw new IllegalArgumentException("fromIdx parameter out of range: " + fromIdx);
ColumnInfoRecord ci;
for (int k = fromIdx; k < records.size(); k++) {
ci = (ColumnInfoRecord) records.get(k);
if ((ci.getFirstColumn() <= column) && (column <= ci.getLastColumn())) {
return k;
}
ci = null;
}
return -1;
}
public ColumnInfoRecord writeHidden(ColumnInfoRecord columnInfo, int idx, boolean hidden) {
int level = columnInfo.getOutlineLevel();
while (idx < records.size()) {
columnInfo.setHidden(hidden);
if (idx + 1 < records.size()) {
ColumnInfoRecord nextColumnInfo = (ColumnInfoRecord) records.get(idx + 1);
if (columnInfo.getLastColumn() + 1 == nextColumnInfo.getFirstColumn()) {
if (nextColumnInfo.getOutlineLevel() < level) break;
columnInfo = nextColumnInfo;
} else {
break;
}
}
idx++;
}
return columnInfo;
}
public int findEndOfColumnOutlineGroup(int idx) {
// Find the end of the group.
ColumnInfoRecord columnInfo = (ColumnInfoRecord) records.get(idx);
int level = columnInfo.getOutlineLevel();
while (idx < records.size() - 1) {
ColumnInfoRecord nextColumnInfo = (ColumnInfoRecord) records.get(idx + 1);
if (columnInfo.getLastColumn() + 1 == nextColumnInfo.getFirstColumn()) {
if (nextColumnInfo.getOutlineLevel() < level) {
break;
}
idx++;
columnInfo = nextColumnInfo;
} else {
break;
}
}
return idx;
}
public int findStartOfColumnOutlineGroup(int idx) {
// Find the start of the group.
ColumnInfoRecord columnInfo = (ColumnInfoRecord) records.get(idx);
int level = columnInfo.getOutlineLevel();
while (idx != 0) {
ColumnInfoRecord prevColumnInfo = (ColumnInfoRecord) records.get(idx - 1);
if (columnInfo.getFirstColumn() - 1 == prevColumnInfo.getLastColumn()) {
if (prevColumnInfo.getOutlineLevel() < level) {
break;
}
idx--;
columnInfo = prevColumnInfo;
} else {
break;
}
}
return idx;
}
public void setColumn(
short column, Short xfIndex, Short width, Integer level, Boolean hidden, Boolean collapsed) {
ColumnInfoRecord ci = null;
int k = 0;
for (k = 0; k < records.size(); k++) {
ci = (ColumnInfoRecord) records.get(k);
if ((ci.getFirstColumn() <= column) && (column <= ci.getLastColumn())) {
break;
}
ci = null;
}
if (ci != null) {
boolean styleChanged = xfIndex != null && ci.getXFIndex() != xfIndex.shortValue();
boolean widthChanged = width != null && ci.getColumnWidth() != width.shortValue();
boolean levelChanged = level != null && ci.getOutlineLevel() != level.intValue();
boolean hiddenChanged = hidden != null && ci.getHidden() != hidden.booleanValue();
boolean collapsedChanged = collapsed != null && ci.getCollapsed() != collapsed.booleanValue();
boolean columnChanged =
styleChanged || widthChanged || levelChanged || hiddenChanged || collapsedChanged;
if (!columnChanged) {
// do nothing...nothing changed.
} else if ((ci.getFirstColumn() == column)
&& (ci.getLastColumn() == column)) { // if its only for this cell then
setColumnInfoFields(ci, xfIndex, width, level, hidden, collapsed);
} else if ((ci.getFirstColumn() == column) || (ci.getLastColumn() == column)) {
// okay so the width is different but the first or last column == the column we'return
// setting
// we'll just divide the info and create a new one
if (ci.getFirstColumn() == column) {
ci.setFirstColumn((short) (column + 1));
} else {
ci.setLastColumn((short) (column - 1));
}
ColumnInfoRecord nci = (ColumnInfoRecord) createColInfo();
nci.setFirstColumn(column);
nci.setLastColumn(column);
nci.setOptions(ci.getOptions());
nci.setXFIndex(ci.getXFIndex());
setColumnInfoFields(nci, xfIndex, width, level, hidden, collapsed);
insertColumn(k, nci);
} else {
// split to 3 records
short lastcolumn = ci.getLastColumn();
ci.setLastColumn((short) (column - 1));
ColumnInfoRecord nci = (ColumnInfoRecord) createColInfo();
nci.setFirstColumn(column);
nci.setLastColumn(column);
nci.setOptions(ci.getOptions());
nci.setXFIndex(ci.getXFIndex());
setColumnInfoFields(nci, xfIndex, width, level, hidden, collapsed);
insertColumn(++k, nci);
nci = (ColumnInfoRecord) createColInfo();
nci.setFirstColumn((short) (column + 1));
nci.setLastColumn(lastcolumn);
nci.setOptions(ci.getOptions());
nci.setXFIndex(ci.getXFIndex());
nci.setColumnWidth(ci.getColumnWidth());
insertColumn(++k, nci);
}
} else {
// okay so there ISN'T a column info record that cover's this column so lets create one!
ColumnInfoRecord nci = (ColumnInfoRecord) createColInfo();
nci.setFirstColumn(column);
nci.setLastColumn(column);
setColumnInfoFields(nci, xfIndex, width, level, hidden, collapsed);
insertColumn(k, nci);
}
}