| Big Bug of EditingSupport with RAP 1.5 Release [message #896380] |
Wed, 18 July 2012 08:42  |
 Francis Delsinnes
Messages: 49
Registered: November 2011 |
Member |
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With the last release of June 2012 (RAP 1.5 Release),
I've got the following problem:
Impossible to edit the right cell when a TableViewer needs a vertical scrollbar.
Warning: This problem happens when the scroll bar is lowered to the maximum!
In this case: a bad cell is edited...
To try it, you can create a new RAP project with a basic view
and replace the "View" class by the following code:
An example of a correct edition:
I try to edit the cell with a number #8
I've edited the cell (OK)
An example of an incorrect edition (with the same code of course):
I scroll at the max...
I try to edit the last cell (with the number #34)
First problem: Why this cell displays "Value_33" ?
I modify the text...
=> Bad Result: The focus is on the cell #34 but it is not the edited cell...
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.ColumnViewer;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.ui.part.ViewPart;
/**
* Test.
*
* @author Internal Tools Team
*/
public final class View
extends ViewPart {
/**
* A simple record.
*
* @author Internal Tools Team
*/
private static class Record {
/** A string. */
public String key;
/** A string. */
public String value;
}
/*
* (non-Javadoc)
* @see org.eclipse.ui.part.WorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)
*/
@Override public void createPartControl(Composite parent) {
final TableViewer viewer = new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
final Table table = viewer.getTable();
final TableViewerColumn keyColumnViewer = new TableViewerColumn(viewer, SWT.NONE);
final TableViewerColumn valueColumnViewer = new TableViewerColumn(viewer, SWT.NONE);
final TableColumn keyColumn = keyColumnViewer.getColumn();
final TableColumn valueColumn = valueColumnViewer.getColumn();
// widgets
keyColumn.setText("Key");
keyColumn.setWidth(100);
valueColumn.setText("Value");
valueColumn.setWidth(120);
table.setHeaderVisible(true);
table.setLinesVisible(true);
// viewers (label provider, editing support, content provider, input)
keyColumnViewer.setLabelProvider(createKeyLabelProvider());
valueColumnViewer.setLabelProvider(createValueLabelProvider());
valueColumnViewer.setEditingSupport(createValueEditingSupport(viewer));
viewer.setContentProvider(new ArrayContentProvider());
viewer.setInput(createFakeRecords(35));
setViewer(viewer);
}
/*
* (non-Javadoc)
* @see org.eclipse.ui.part.WorkbenchPart#setFocus()
*/
@Override public void setFocus() {
final TableViewer viewer = getViewer();
viewer.getControl()
.setFocus();
}
/**
* Creates fake records.
*
* @param nb - a number of records
* @return a records array
*/
private static Record[] createFakeRecords(final int nb) {
final Record[] records = new Record[nb > 0 ? nb
: 10];
for (int i = 0; i < nb; i++) {
final Record record = new Record();
record.key = "Key_" + i;
record.value = "Value_" + i;
records[i] = record;
}
return records;
}
/**
* Creates the corresponding label provider.
*
* @return a label provider
*/
private static ColumnLabelProvider createKeyLabelProvider() {
return new ColumnLabelProvider() {
/** A string id. */
private static final long serialVersionUID = 1547222513947003304L;
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ColumnLabelProvider#getText(java.lang.Object)
*/
@Override public String getText(Object element) {
return ((Record)element).key;
}
};
}
/**
* Creates the corresponding editing support.
*
* @param columnViewer - a viewer
* @return an editing support
*/
private static EditingSupport createValueEditingSupport(final ColumnViewer columnViewer) {
return new EditingSupport(columnViewer) {
/** A string id. */
private static final long serialVersionUID = 893208682725506423L;
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.EditingSupport#setValue(java.lang.Object, java.lang.Object)
*/
@Override protected void setValue(Object element,
Object value) {
((Record)element).value = value.toString();
getViewer().refresh(element, true);
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.EditingSupport#getValue(java.lang.Object)
*/
@Override protected Object getValue(Object element) {
return ((Record)element).value;
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.EditingSupport#getCellEditor(java.lang.Object)
*/
@Override protected CellEditor getCellEditor(Object element) {
return new TextCellEditor((Composite)getViewer().getControl());
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.EditingSupport#canEdit(java.lang.Object)
*/
@Override protected boolean canEdit(Object element) {
return element instanceof Record;
}
};
}
/**
* Creates the corresponding label provider.
*
* @return a label provider
*/
private static ColumnLabelProvider createValueLabelProvider() {
return new ColumnLabelProvider() {
/** A string id. */
private static final long serialVersionUID = -611412295225558699L;
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ColumnLabelProvider#getText(java.lang.Object)
*/
@Override public String getText(Object element) {
return ((Record)element).value;
}
};
}
/**
* Gets the viewer.
*
* @return a viewer
*/
private TableViewer getViewer() {
return viewer;
}
/**
* Sets the viewer.
*
* @param viewer - a viewer
*/
private void setViewer(TableViewer viewer) {
this.viewer = viewer;
}
/** String id. */
public static final String ID = "Rap15ReleaseTest.view";
/** viewer. */
private TableViewer viewer;
}
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