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| Sorting Nebula Grid Widget [message #903336] |
Thu, 23 August 2012 08:18  |
 zainab alhaidary
Messages: 20
Registered: April 2012 |
Junior Member |
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hello every body 
I'm using the Nebula grid widget that has multiple columns, filling it with items by :
private Grid grid;
grid = new Grid(container, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL | SWT.SINGLE);
grid.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
// banner, SWT.BORDER
grid.setHeaderVisible(true);
final GridColumn column = new GridColumn(grid,SWT.NONE);
column.setText("ID");
column.setWidth(100);
column.setSort(SWT.UP);
column.setTree(true);
// new ColumnViewerSorter(grid, column) {
// @Override
// protected int doCompare (Viewer viewer, Object e1, Object e2) {
// // compare the two items e1 and e2
// }
// };
GridColumn column2 = new GridColumn(grid,SWT.NONE);
column2.setText("project");
column2.setWidth(300);
// column2.setSummary(false);
GridColumn column3 = new GridColumn(grid,SWT.NONE);
column3.setText("Summary");
column3.setWidth(300);
// column3.setSort(SWT.UP|SWT.DOWN);
// column3.setSummary(false);
GridColumn column4 = new GridColumn(grid,SWT.NONE);
column4.setText("Creation date");
column4.setWidth(150);
// column4.setSummary(false);
GridColumn column5 = new GridColumn(grid,SWT.NONE);
column5.setText("Type");
column5.setWidth(100);
column5.setVisible(true);
GridColumn column6 = new GridColumn(grid,SWT.NONE);
column6.setText("State" +
"");
column6.setWidth(100);
column6.setVisible(true);
GridColumn column7 = new GridColumn(grid,SWT.NONE);
column7.setText("Assigned User");
column7.setWidth(100);
column7.setVisible(true);
GridColumn column8 = new GridColumn(grid,SWT.NONE);
column8.setText("Release");
column8.setWidth(100);
column8.setVisible(true);
GridColumn column9 = new GridColumn(grid,SWT.None);
column9.setWidth(100);
column9.setText("CR_type");
column9.setVisible(true);
GridColumn column10 = new GridColumn(grid,SWT.None);
column10.setWidth(100);
column10.setText("Severity");
column10.setVisible(true);
GridColumn column11 = new GridColumn(grid,SWT.None);
column11.setWidth(100);
column11.setText("DocID");
column11.setVisible(true);
GridColumn column12 = new GridColumn(grid,SWT.None);
column12.setWidth(100);
column12.setText("ReqID");
column12.setVisible(true);
GridColumn column13 = new GridColumn(grid,SWT.None);
column13.setWidth(100);
column13.setText("Customer Relevance");
column13.setVisible(true);
GridItem gridItem;
gridItem = new GridItem ( grid, SWT.NONE );
for(CR c :crs)
{
if(c.getType().equals("Change Request"))
{
gridItem = new GridItem ( grid, SWT.NONE );
try{
gridItem.setText(c.getCRID());
}catch(Exception e )
{
gridItem.setText("");
}
try{
gridItem.setText(1,c.getProject());
}catch(Exception e )
{
gridItem.setText(1,"");
}
try{
gridItem.setText(2,c.getSummary());
}catch(Exception e )
{
gridItem.setText(2,"");
}
try{
gridItem.setText(3,c.getCreationDate().toString()); //c.getCreationDate().toString()
}catch(Exception e )
{
gridItem.setText(3,"");
}
try{
gridItem.setText(4,c.getType());
}catch(Exception e )
{
gridItem.setText(4,"");
}
gridItem.setImage(ResourceManager.getPluginImage("com.amenity.workbench", "icons/workbench/general/query.png"));
try{
gridItem.setText(5,c.getState());
}catch(Exception e )
{
gridItem.setText(5,"");
}
try{
gridItem.setText(6,c.getAssignedUser());
}catch(Exception e )
{
gridItem.setText(6,"");
}
try{
gridItem.setText(7,c.getRelease().toString());
}catch(Exception e )
{
gridItem.setText(7,"");
}
try{
gridItem.setText(8,c.getCR_Type());
}catch(Exception e )
{
gridItem.setText(8,"");
}
try{
gridItem.setText(9,c.getSeverity());
}catch(Exception e )
{
gridItem.setText(9,"");
}
try{
gridItem.setText(10,c.getDocID());
}catch(Exception e )
{
gridItem.setText(10,"");
}
try{
gridItem.setText(11,c.getReqID());
}catch(Exception e )
{
gridItem.setText(11,"");
}
try{
gridItem.setText(12,c.getCustomerRelevant());
}catch(Exception e )
{
gridItem.setText(12,"");
}
Now I want to do sorting for these grid items by clicking on the header of the column. I have tried several methods like column.setSort(SWT.UP) but it didn't work.
Anyone knows how can I implement the sorting please ?
Thank You
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| Re: Sorting Nebula Grid Widget [message #903384 is a reply to message #903336] |
Thu, 23 August 2012 12:54  |
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You need to set a comparator:
grid.setComparator(SomeClassYouCreated);
where "SomeClassYouCreated" extends ViewerComparator and knows how to compare the records.
column.setSort(SWT.UP/DOWN) sets the chevron.....it doesn't actually do a sort for you....your comparator class needs to do that.
Back in May I posted more details in this forum on what I did. I believe the link to the topic is: http://www.eclipse.org/forums/index.php/t/187183/
-Sharon
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| Re: Sorting Nebula Grid Widget [message #903389 is a reply to message #903387] |
Thu, 23 August 2012 13:08 |
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Ok, I'm using a viewer - which does have that method. Is there a reason why you are not using a viewer and setting your input values that way? You should be able to filter the data that gets displayed easily enough.
I have found that using viewers is much easier in the long run, and makes for a better separation of the data model from the viewer.
I guess your other choice would be to roll your own - and actually move the data around when you're setting the column sort direction.....I strongly recommend you change to using a viewer.
-Sharon
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