我使用JFace TableViewer和数据绑定来显示数据库表的数据,有些列有很长的文本,我发现文本被剪掉了。如果我激活与该单元格关联的文本编辑器,我可以看到全文。
swt表是否限制单元格中的文本长度?或OS有这样的限制?(我使用eclipse 3.6和Windows 7 32位)
/*******************************************************************************
* Copyright (c) 2006 Tom Schindl and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Tom Schindl - initial API and implementation
*******************************************************************************/
package org.eclipse.jface.snippets.viewers;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
/**
* A simple TableViewer to demonstrate usage
*
* @author Tom Schindl <tom.schindl@bestsolution.at>
*
*/
public class Snippet001TableViewer {
private class MyContentProvider implements IStructuredContentProvider {
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
*/
public Object[] getElements(Object inputElement) {
return (MyModel[])inputElement;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#dispose()
*/
public void dispose() {
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
}
}
public class MyModel {
public int counter;
public MyModel(int counter) {
this.counter = counter;
}
public String toString() {
**return "very loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooog text" + this.counter;**
}
}
public Snippet001TableViewer(Shell shell) {
final TableViewer v = new TableViewer(shell);
v.setLabelProvider(new LabelProvider());
v.setContentProvider(new MyContentProvider());
MyModel[] model = createModel();
v.setInput(model);
v.getTable().setLinesVisible(true);
}
private MyModel[] createModel() {
MyModel[] elements = new MyModel[10];
for( int i = 0; i < 10; i++ ) {
elements[i] = new MyModel(i);
}
return elements;
}
/**
* @param args
*/
public static void main(String[] args) {
Display display = new Display ();
Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
new Snippet001TableViewer(shell);
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
}
答案 0 :(得分:7)
这是windows bug / feature(see bugzilla for details),这是证明(你的代码的linux截图)
我可以通过自我单元格渲染来解决此错误/功能(请参阅Custom Drawing Table and Tree Items教程)。
答案 1 :(得分:0)
我找到了一种简单的方法来显示整个文本。 您必须使用StyledCellLabelProvider并覆盖update-method。
这是一个显示StyledCellLabelProvider和ColumnLabelProvider之间差异的小例子。要覆盖ColumnLabelProvider的update-method是不必要的。我这样做是为了表明它取决于课程。
package tabletest;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.StyledCellLabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TableColumn;
public class MyClass {
private static final String LINE = "123456789A123456789B123456789C123456789D123456789E123456789F123456789G123456789H123456789I123456789J"// 100
+ "123456789K123456789L123456789M123456789N123456789O123456789P123456789Q123456789R123456789S123456789T" // 200
+ "123456789U123456789V123456789W123456789X123456789Y123456789Z" // 260
+ " a lot mor text";
public MyClass(Shell shell){
createControl(shell);
}
private void createControl(Composite parent){
parent.setLayout(new GridLayout(1, true));
TableViewer viewer = new TableViewer(parent, SWT.FULL_SELECTION | SWT.BORDER | SWT.V_SCROLL |SWT.H_SCROLL);
viewer.getTable().setHeaderVisible(true);
viewer.getTable().setLinesVisible(true);
viewer.setContentProvider(ArrayContentProvider.getInstance());
viewer.setLabelProvider(new LabelProvider());
createColumn(viewer);
viewer.setInput(new String[] { LINE });
for(TableColumn col : viewer.getTable().getColumns()){
col.pack();
}
GridDataFactory.fillDefaults().grab(true, true).applyTo(viewer.getControl());
}
private void createColumn(TableViewer viewer) {
TableViewerColumn column1 = new TableViewerColumn(viewer, SWT.NONE);
column1.getColumn().setText("ColumnLabelProvider");
column1.setLabelProvider(new ColumnLabelProvider(){
@Override
public void update(ViewerCell cell) {
cell.setText(cell.getElement().toString());
super.update(cell);
}
});
TableViewerColumn column2 = new TableViewerColumn(viewer, SWT.NONE);
column2.getColumn().setText("StyledCellLabelProvider");
column2.setLabelProvider(new StyledCellLabelProvider() {
@Override
public void update(ViewerCell cell) {
cell.setText(cell.getElement().toString());
super.update(cell);
}
});
}
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
new MyClass(shell);
shell.open();
while(!shell.isDisposed()){
if(!display.readAndDispatch()){
display.sleep();
}
}
}
}
当您将LabelProvider更改为StyledCellLabelProvider并覆盖与我的示例类似的更新方法时,它也适用于Snippet001TableViewer。