338 if (c.isVisible() && c.getColumn().getColumnDrawer() != null) {
339 // Custom drawer found, ensure the the listener is added
340 for (Listener l : viewer.getControl().getListeners(SWT.EraseItem)) {
341 if (l == customDrawer) {
342 return;
343 }
344 }
345 viewer.getControl().addListener(SWT.EraseItem, customDrawer);
346 return;
347 }
348 }
349
350 // No custom drawer found, ensure the the listener is not added
351 viewer.getControl().removeListener(SWT.EraseItem, customDrawer);
352 }
353
354 public ColumnViewer getViewer() {
355 return viewer;
356 }
357
358 void setColumnHidden(String columnId, boolean hidden) {
359 updateColumnOrder();
360 ColumnEntry columnEntry = getColumnEntry(columnId);
361 columnEntry.hidden = hidden;
362 if (hidden) {
363 columnEntry.doHide();
364 updateEraseItemListener();
365 } else {
366 createColumnUi(columnEntry);
367 updateEraseItemListener();
368 getViewer().refresh(); // Need to populate the added column
369 }
370 getViewer().getControl().getParent().layout();
371 }
372
373 private void createColumnUi(ColumnEntry columnEntry) {
374 Item columnWidget = columnEntry.create(viewer, countVisibleColumnsBefore(columnEntry));
375 columnWidget.addListener(SWT.Selection, e -> changeOrFlipSortColumn(columnEntry));
376 }
377
378 private int countVisibleColumnsBefore(ColumnEntry columnEntry) {
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338 if (c.isVisible() && c.getColumn().getColumnDrawer() != null) {
339 // Custom drawer found, ensure the the listener is added
340 for (Listener l : viewer.getControl().getListeners(SWT.EraseItem)) {
341 if (l == customDrawer) {
342 return;
343 }
344 }
345 viewer.getControl().addListener(SWT.EraseItem, customDrawer);
346 return;
347 }
348 }
349
350 // No custom drawer found, ensure the the listener is not added
351 viewer.getControl().removeListener(SWT.EraseItem, customDrawer);
352 }
353
354 public ColumnViewer getViewer() {
355 return viewer;
356 }
357
358 public void setColumnHidden(String columnId, boolean hidden) {
359 updateColumnOrder();
360 ColumnEntry columnEntry = getColumnEntry(columnId);
361 columnEntry.hidden = hidden;
362 if (hidden) {
363 columnEntry.doHide();
364 updateEraseItemListener();
365 } else {
366 createColumnUi(columnEntry);
367 updateEraseItemListener();
368 getViewer().refresh(); // Need to populate the added column
369 }
370 getViewer().getControl().getParent().layout();
371 }
372
373 private void createColumnUi(ColumnEntry columnEntry) {
374 Item columnWidget = columnEntry.create(viewer, countVisibleColumnsBefore(columnEntry));
375 columnWidget.addListener(SWT.Selection, e -> changeOrFlipSortColumn(columnEntry));
376 }
377
378 private int countVisibleColumnsBefore(ColumnEntry columnEntry) {
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