/**
* Creates table viewer and builds table contents
*
* @param parent the parent composite
*/
private void createTable(Composite parent) {
tableViewer =
new TableViewer(
parent, SWT.MULTI | SWT.FULL_SELECTION | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
// setup table widget
tableViewer.setUseHashlookup(true);
Table table = tableViewer.getTable();
table.setHeaderVisible(true);
table.setLinesVisible(true);
GridData data = new GridData(GridData.FILL_BOTH);
data.grabExcessHorizontalSpace = true;
data.grabExcessVerticalSpace = true;
data.horizontalSpan = 1;
data.widthHint = convertWidthInCharsToPixels(30);
table.setLayoutData(data);
table.addListener(
SWT.Selection,
new Listener() {
public void handleEvent(Event e) {
handleSelection();
}
});
// Add the columns to the table
final String[] columnNames = new String[collectionColumns.size()];
int i = 0;
Iterator iter = collectionColumns.iterator();
while (iter.hasNext()) {
SortFilterCollectionColumn columnInfo = (SortFilterCollectionColumn) iter.next();
TableColumn column = new TableColumn(table, columnInfo.getAlignment());
column.setText(columnInfo.getCaption());
column.setResizable(columnInfo.isResizable());
column.setWidth(columnInfo.getWidth());
column.setAlignment(columnInfo.getAlignment());
if (columnInfo.getColumnSorter() != null) {
column.addSelectionListener(
new HeaderSelectionListener(
(SortFilterViewerSorter) columnInfo.getColumnSorter(), tableViewer));
// Intialize the table sorter
if (_sortColumn != null && column.getText().equals(_sortColumn)) {
SortFilterViewerSorter sorter = (SortFilterViewerSorter) columnInfo.getColumnSorter();
if (sorter != null) {
if (SortingDirection.ASCENDING_LITERAL.equals(_sortingDirection)) {
// Use the ascending image
Image image = DiagramUIPluginImages.DESC_SORT_ARROW_UP.createImage();
column.setImage(image);
column.pack();
} else if (SortingDirection.DESCENDING_LITERAL.equals(_sortingDirection)) {
sorter.toggleSortingDirection();
// Use the descending image
Image image = DiagramUIPluginImages.DESC_SORT_ARROW_DN.createImage();
column.setImage(image);
column.pack();
}
}
tableViewer.setSorter(sorter);
}
}
columnNames[i++] = columnInfo.getCaption();
}
// setup table viewer
tableViewer.setContentProvider(new SortFilterContentProvider());
if (labelProvider != null) tableViewer.setLabelProvider(labelProvider);
tableViewer.setColumnProperties(columnNames);
tableViewer.setCellModifier(new SortFilterCellModifier());
// Can only changes the first column - the visible column
CellEditor[] editors = new CellEditor[collectionColumns.size()];
editors[0] = new CheckboxCellEditor(table);
for (i = 1; i < collectionColumns.size(); i++) {
editors[i] = null;
}
tableViewer.setCellEditors(editors);
if (elementCollection != null && !elementCollection.isEmpty())
tableViewer.setInput(elementCollection);
// Update the model
TableItem[] tableItems = tableViewer.getTable().getItems();
List newModel = new ArrayList();
for (i = 0; i < tableItems.length; i++) {
SortFilterElement ey = (SortFilterElement) tableItems[i].getData();
newModel.add(i, ey);
}
tableViewer.setInput(newModel);
elementCollection = newModel;
createBackUp();
// pack column widths
TableColumn[] tableColumns = table.getColumns();
for (i = 0; i < tableColumns.length; i++) {
tableColumns[i].pack();
}
}
private void handleEvent(SelectionEvent e) {
// Clear any existing header images
TableColumn[] columns = _tableViewer.getTable().getColumns();
for (int i = 0; i < columns.length; i++) {
columns[i].setImage(null);
}
// Add the image based on the sort
int columnIndex = 0;
if (e.widget instanceof TableColumn) {
TableColumn column = (TableColumn) e.widget;
columnIndex = findColumnIndexFromProperty(column.getText());
if (columnIndex != -1) {
Image image = null;
SortFilterViewerSorter newSorter = (SortFilterViewerSorter) _tableViewer.getSorter();
if (newSorter != null) {
newSorter.toggleSortingDirection();
if (newSorter == null
|| SortingDirection.ASCENDING_LITERAL.equals(newSorter.getSortingDirection())) {
// Use the ascending image
image = DiagramUIPluginImages.DESC_SORT_ARROW_UP.createImage();
} else {
// Use the descending image
image = DiagramUIPluginImages.DESC_SORT_ARROW_DN.createImage();
}
columns[columnIndex].setImage(image);
}
}
}
if (sorter != null) {
// Does the actual sorting
_tableViewer.setSorter(null);
// Necessary to use ascending/descending sorting
_tableViewer.setSorter(getSorter());
// Update the model
TableItem[] tableItems = _tableViewer.getTable().getItems();
List newModel = new ArrayList();
for (int i = 0; i < tableItems.length; i++) {
SortFilterElement ey = (SortFilterElement) tableItems[i].getData();
newModel.add(i, ey);
}
elementCollection.clear();
elementCollection.addAll(newModel);
_tableViewer.refresh();
_sorting = Sorting.AUTOMATIC_LITERAL;
Object[] columnNames = tableViewer.getColumnProperties();
if (_sortingKeys != Collections.EMPTY_MAP) {
_sortingKeys.clear();
} else {
_sortingKeys = new HashMap();
}
_sortingKeys.put(columnNames[columnIndex], getSorter().getSortingDirection());
handleSelection();
updateApplyButton();
}
}