我对Jface还是很陌生，现在我面对的是表中最后一列的问题。看下一个屏幕截图：
如您所见，启动应用程序时，最后一列的尺寸过大，无论如何我都无法解决！您可以在下面看到查看代码：
package de.vogella.jface.tableviewer;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.part.ViewPart;
import de.vogella.jface.tableviewer.model.CenterImageLabelProvider;
import de.vogella.jface.tableviewer.model.ModelProvider;
import de.vogella.jface.tableviewer.model.Person;
public class View extends ViewPart {
public static final String ID = "de.vogella.jface.tableviewer.view";
private TableViewer viewer;
// static fields to hold the images
private static final Image CHECKED = Activator.getImageDescriptor(
"icons/checked.gif").createImage();
private static final Image UNCHECKED = Activator.getImageDescriptor(
"icons/unchecked.gif").createImage();
public void createPartControl(Composite parent) {
GridLayout layout = new GridLayout(2, false);
parent.setLayout(layout);
Label searchLabel = new Label(parent, SWT.NONE);
searchLabel.setText("Search: ");
final Text searchText = new Text(parent, SWT.BORDER | SWT.SEARCH);
searchText.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL
| GridData.HORIZONTAL_ALIGN_FILL));
createViewer(parent);
}
private void createViewer(Composite parent) {
viewer = new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL
| SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.BORDER);
createColumns(parent, viewer);
final Table table = viewer.getTable();
table.setHeaderVisible(true);
table.setLinesVisible(true);
viewer.setContentProvider(new ArrayContentProvider());
// get the content for the viewer, setInput will call getElements in the
// contentProvider
viewer.setInput(ModelProvider.INSTANCE.getPersons());
// make the selection available to other views
getSite().setSelectionProvider(viewer);
// set the sorter for the table
// define layout for the viewer
GridData gridData = new GridData();
gridData.verticalAlignment = GridData.FILL;
gridData.horizontalSpan = 2;
gridData.grabExcessHorizontalSpace = true;
gridData.grabExcessVerticalSpace = true;
gridData.horizontalAlignment = GridData.FILL;
viewer.getControl().setLayoutData(gridData);
}
public TableViewer getViewer() {
return viewer;
}
// create the columns for the table
private void createColumns(final Composite parent, final TableViewer viewer) {
String[] titles = { "First name", "Last name", "Gender", "Married", "Age" };
int[] bounds = { 100, 100, 100, 100, 100 };
// first column is for the first name
TableViewerColumn col = createTableViewerColumn(titles[0], bounds[0], 0);
col.setLabelProvider(new ColumnLabelProvider() {
@Override
public String getText(Object element) {
Person p = (Person) element;
return p.getFirstName();
}
});
// second column is for the last name
col = createTableViewerColumn(titles[1], bounds[1], 1);
col.setLabelProvider(new ColumnLabelProvider() {
@Override
public String getText(Object element) {
Person p = (Person) element;
return p.getLastName();
}
});
// now the gender
col = createTableViewerColumn(titles[2], bounds[2], 2);
col.setLabelProvider(new ColumnLabelProvider() {
@Override
public String getText(Object element) {
Person p = (Person) element;
return p.getGender();
}
});
// now the status married
col = createTableViewerColumn(titles[3], bounds[3], 3);
col.setLabelProvider(new CenterImageLabelProvider() {
@Override
public Image getImage(Object element) {
if (((Person) element).isMarried()) {
return CHECKED;
}
else {
return UNCHECKED;
}
}
});
// now the age
col = createTableViewerColumn(titles[4], bounds[4], 4);
col.setLabelProvider(new ColumnLabelProvider() {
@Override
public String getText(Object element) {
Person p = (Person) element;
return p.getAge().toString();
}
});
}
private TableViewerColumn createTableViewerColumn(String title,
int bound, final int colNumber) {
final TableViewerColumn viewerColumn = new TableViewerColumn(viewer,
SWT.CENTER);
final TableColumn column = viewerColumn.getColumn();
column.setText(title);
column.setWidth(bound);
column.setResizable(true);
column.setMoveable(true);
return viewerColumn;
}
public void setFocus() {
viewer.getControl().setFocus();
}
}
我怎样才能解决这个问题？
最佳答案
您在查看器上的布局：
GridData gridData = new GridData();
gridData.verticalAlignment = GridData.FILL;
gridData.horizontalSpan = 2;
gridData.grabExcessHorizontalSpace = true;
gridData.grabExcessVerticalSpace = true;
gridData.horizontalAlignment = GridData.FILL;
viewer.getControl().setLayoutData(gridData);
表示您希望查看者使用所有可用的水平空间，因此查看者必须调整最后一列的大小才能实现此目的。
使用
gridData.grabExcessHorizontalSpace = false;
gridData.horizontalAlignment = GridData.BEGINNING;
不占用额外空间。
另外，要填充可用空间，也可以不使用GridData并使用
TableLayout和ColumnWeightData，例如：TableLayout tableLayout = new TableLayout();
table.setLayout(tableLayout);
...
... don't call column.setWidth replace with:
tableLayout.addColumnData(new ColumnWeightData(nnn));
nnn是您为每列选择的数字，并且是用于计算列宽的“权重”。