| Horisontal scrolling during column draging [message #586989] |
Fri, 14 December 2007 10:04 |
 Andrey
Messages: 8
Registered: July 2009 |
Junior Member |
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This is a multi-part message in MIME format.
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Hi!
I've met some unexpected issue with column dragging. If a column is
dragged on right (or left) invisible area, a grid will not be scrolled
to reach invisible columns. Nevertheless, grid is scrolled during multi
selection dragging. Please use an attached snippet and try to select
invisible cells, than drag column into invisible target column.
Could you advice some solution for scrolling grid during column
dragging? Thank you in advance.
Andrey
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Content-Type: text/plain;
name="MxSnippet026TreeViewerTabEditingForGrid.java"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
filename="MxSnippet026TreeViewerTabEditingForGrid.java"
package com.maconomy.widgets.snippets;
import java.util.ArrayList;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.ColumnViewerEditor;
import org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent;
import org.eclipse.jface.viewers.ColumnViewerEditorActivationStrate gy;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.nebula.jface.gridviewer.GridTableViewer;
import org.eclipse.nebula.jface.gridviewer.GridViewerColumn;
import org.eclipse.nebula.jface.gridviewer.GridViewerEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
/**
* A simple TreeViewer to demonstrate usage. Anyone could extend the snippet for test purposer or bug reporting.
*
* @author Tom Schindl <tom.schindl@bestsolution.at>
*
*/
public class MxSnippet026TreeViewerTabEditingForGrid {
/**
*
* @param shell
*/
public MxSnippet026TreeViewerTabEditingForGrid(final Shell shell) {
final Button b = new Button(shell,SWT.PUSH);
b.setText("Remove column");
// Grid used instead jFace viewer
final GridTableViewer v = new GridTableViewer(shell, SWT.FULL_SELECTION | SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
v.getGrid().setLinesVisible(true);
v.getGrid().setHeaderVisible(true);
b.addSelectionListener(new SelectionListener() {
public void widgetDefaultSelected(SelectionEvent e) {
}
public void widgetSelected(SelectionEvent e) {
v.getGrid().getColumn(1).dispose();
}
});
// does not available for Grid
//TableViewerFocusCellManager focusCellManager = new TableViewerFocusCellManager(v,new FocusCellOwnerDrawHighlighter(v));
final ColumnViewerEditorActivationStrategy actSupport = new ColumnViewerEditorActivationStrategy(v) {
@Override
protected boolean isEditorActivationEvent(
ColumnViewerEditorActivationEvent event) {
System.out.println("event "+event.eventType);
return event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL
//mouse click activation!!!
|| event.eventType == ColumnViewerEditorActivationEvent.MOUSE_CLICK_SELECTION
|| (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED && event.keyCode == SWT.CR)
|| event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC;
}
};
GridViewerEditor.create(v, actSupport, ColumnViewerEditor.TABBING_HORIZONTAL | ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR
| ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION);
v.getGrid().setCellSelectionEnabled(true);
final TextCellEditor textCellEditor = new TextCellEditor(v.getGrid());
GridViewerColumn column = new GridViewerColumn(v, SWT.NONE);
column.getColumn().setWidth(270);
column.getColumn().setMoveable(true);
column.getColumn().setText("Column 1");
column.setLabelProvider(new ColumnLabelProvider() {
@Override
public String getText(Object element) {
return "Column 1 => " + element.toString();
}
});
column.setEditingSupport(new EditingSupport(v) {
@Override
protected boolean canEdit(Object element) {
return false;
}
@Override
protected CellEditor getCellEditor(Object element) {
return textCellEditor;
}
@Override
protected Object getValue(Object element) {
return ((MyModel) element).counter + "";
}
@Override
protected void setValue(Object element, Object value) {
((MyModel) element).counter = Integer
.parseInt(value.toString());
v.update(element, null);
}
});
column = new GridViewerColumn(v, SWT.NONE);
column.getColumn().setWidth(270);
column.getColumn().setMoveable(true);
column.getColumn().setText("Column 2");
column.setLabelProvider(new ColumnLabelProvider() {
@Override
public String getText(Object element) {
return "Column 2 => " + element.toString();
}
});
column.setEditingSupport(new EditingSupport(v) {
@Override
protected boolean canEdit(Object element) {
return true;
}
@Override
protected CellEditor getCellEditor(Object element) {
return textCellEditor;
}
@Override
protected Object getValue(Object element) {
return ((MyModel) element).counter + "";
}
@Override
protected void setValue(Object element, Object value) {
((MyModel) element).counter = Integer
.parseInt(value.toString());
v.update(element, null);
}
});
column = new GridViewerColumn(v, SWT.NONE);
column.getColumn().setWidth(200);
column.getColumn().setMoveable(true);
column.getColumn().setText("Column 3");
column.setLabelProvider(new ColumnLabelProvider() {
@Override
public String getText(Object element) {
return "Column 3 => " + element.toString();
}
});
column.setEditingSupport(new EditingSupport(v) {
@Override
protected boolean canEdit(Object element) {
return true;
}
@Override
protected CellEditor getCellEditor(Object element) {
return textCellEditor;
}
@Override
protected Object getValue(Object element) {
return ((MyModel) element).counter + "";
}
@Override
protected void setValue(Object element, Object value) {
((MyModel) element).counter = Integer
.parseInt(value.toString());
v.update(element, null);
}
});
column = new GridViewerColumn(v, SWT.CHECK | SWT.CENTER);
column.getColumn().setWidth(200);
column.getColumn().setMoveable(true);
column.getColumn().setText("Column 4");
column.setLabelProvider(new ColumnLabelProvider() {
@Override
public String getText(Object element) {
return null;
}
});
v.setContentProvider(new MyContentProvider());
v.setInput(createModel());
}
private MyModel createModel() {
final MyModel root = new MyModel(0, null);
root.counter = 0;
MyModel tmp;
MyModel subItem;
for (int i = 1; i < 10; i++) {
tmp = new MyModel(i, root);
root.child.add(tmp);
for (int j = 1; j < i; j++) {
subItem = new MyModel(j, tmp);
subItem.child.add(new MyModel(j * 100, subItem));
tmp.child.add(subItem);
}
}
return root;
}
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
new MxSnippet026TreeViewerTabEditingForGrid(shell);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
private class MyContentProvider implements ITreeContentProvider {
public Object[] getElements(Object inputElement) {
return ((MyModel) inputElement).child.toArray();
}
public void dispose() {
}
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
}
public Object[] getChildren(Object parentElement) {
return getElements(parentElement);
}
public Object getParent(Object element) {
if (element == null) {
return null;
}
return ((MyModel) element).parent;
}
public boolean hasChildren(Object element) {
return ((MyModel) element).child.size() > 0;
}
}
public class MyModel {
public MyModel parent;
public ArrayList child = new ArrayList();
public int counter;
public MyModel(int counter, MyModel parent) {
this.parent = parent;
this.counter = counter;
}
@Override
public String toString() {
String rv = "Item ";
if (parent != null) {
rv = parent.toString() + ".";
}
rv += counter;
return rv;
}
}
}
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