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Problem with Column Group Reorder and Column Grouping by Value [message #1799426]

Thu, 06 December 2018 16:33

Yves Prelot

Messages: 13
Registered: September 2016

Junior Member

Hello,

I have found it difficult to configure a table using both Column group reorder and Column grouping by value.

Using the default configuration, the group by feature works well, but the column reorder is broken : groups can be broken into sections and you can move a column which is in a group to another place : it still stays inside the group, but the group itself is broken (instead of being continuous, it is broken into separate segments...)

After a long investigation, I believe there is a conflict between:
DefaultColumnGroupHeaderLayerConfiguration => configureUiBindings

which does what is expected for proper Group Column Reorder

and
GroupByHeaderConfiguration => configureUiBindings

which does what is expected for Column Grouping by Value

I could (almost) do what I wanted by extracting the code for the latter (a simple registerFirstMouseDragMode) and assigning it to a different key (left clisck + MOD2);
this is not very natural but is acceptable.

Is there a smarter way to do this ?

Here is a snipet showing what I did:

groupByHeaderLayer = new GroupByHeaderLayer(groupByModel, gridLayer, columnHeaderDataProvider,
new GroupByHeaderConfiguration(groupByModel, columnHeaderDataProvider, columnHeaderStack.columnHeaderLayer) {
DefaultColumnGroupHeaderLayerConfiguration defaultConf = new DefaultColumnGroupHeaderLayerConfiguration(
columnGroupModel);

@Override
public void configureRegistry(IConfigRegistry configRegistry) {
defaultConf.configureRegistry(configRegistry);
super.configureRegistry(configRegistry);
}

@Override
public void configureUiBindings(UiBindingRegistry uiBindingRegistry) {
// everything for columns work here, but column group by
defaultConf.configureUiBindings(uiBindingRegistry);
// add the column group by
uiBindingRegistry.registerFirstMouseDragMode(MouseEventMatcher.columnHeaderLeftClick(SWT.MOD2),
new AggregateDragMode(new CellDragMode(), new GroupByColumnReorderDragMode(), new GroupByDragMode()));
}
});

Regards,
Yves

[Updated on: Thu, 06 December 2018 16:43]

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Re: Problem with Column Group Reorder and Column Grouping by Value [message #1799624 is a reply to message #1799426]

Tue, 11 December 2018 13:06

Dirk Fauth

Messages: 2902
Registered: July 2012

Senior Member

There is a ticket on this already: https://bugs.eclipse.org/bugs/show_bug.cgi?id=395911

The current solution is still to create a custom reorder drag mode that deals with this like you did. I still haven't found a better solution.

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