[news.eclipse.platform.swt] Re: TableViewer SWT.VIRTUAL

["Stefano Zaccaria" <szaccaria@xxxxxxxxxxxx>]

Thaks, thanks, thanks

You are very good girl!!!

I don't have any words that can explane my happynes!!!

Thanks

Non ho parole per esprimere la mia gratitudine, grazie mille Veronika.
Ciao
Stefano


"Veronika Irvine" <veronika_irvine@xxxxxxx> ha scritto nel messaggio 
news:d04og2$jv2$3@xxxxxxxxxxxxxxxxxx
> Support for TableViewer with the style SWT.VIRTUAL was added in 3.1 M5.
> Take a look at ILazyContentProvider and DeferredContentProvider
> I only work on the SWT side, not on the JFace side so I can't help very
> much. The best place to get answers about JFace API is in the
> eclipse.platform newsgroup.
> news://news.eclipse.org/eclipse.platform
> I poked around Eclipse and could not find an example in the plugins
> themselves but I did find a test application that uses the new
> ILazyContentProvider.
> For example, in the plugin org.eclipse.ui.tests (You need to check this 
> out
> of CVS, I did not see it included in any downloads - has lots of simple
> examples of using JFace API) look at the class
> org.jface.tests.viewers.TestLazyModelContentProvider:
>
> /*******************************************************************************
> * Copyright (c) 2005 IBM Corporation and others.
> * All rights reserved. This program and the accompanying material
> * 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:
> * IBM Corporation - initial API and implementation
> *******************************************************************************/
> package org.eclipse.jface.tests.viewers;
> import org.eclipse.jface.util.Assert;
> import org.eclipse.jface.viewers.IContentProvider;
> import org.eclipse.jface.viewers.ILazyContentProvider;
> import org.eclipse.jface.viewers.TableViewer;
> import org.eclipse.jface.viewers.Viewer;
> /**
> * The TestLazyModelContentProvider is the lazy version
> * of the model content provider.
> */
> public class TestLazyModelContentProvider extends TestModelContentProvider 
> implements ILazyContentProvider, IContentProvider {
> TableViewerTest test;
> TestElement input;
> TestLazyModelContentProvider(TableViewerTest testObject){
> test = testObject;
> }
> /* (non-Javadoc)
> * @see org.eclipse.jface.viewers.ILazyContentProvider#updateElements(int, 
> int)
> */
> public void updateElement(int index) {
> if(input == null)
> return; //Nothing to update yet
> ((TableViewer) test.fViewer).replace(input.getChildAt(index), index);
> }
> /* (non-Javadoc)
> * @see org.eclipse.jface.tests.viewers.TestModelContentProvider#dispose()
> */
> public void dispose() {
> super.dispose();
> }
> /* (non-Javadoc)
> * @see 
> org.eclipse.jface.tests.viewers.TestModelContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, 
> java.lang.Object, java.lang.Object)
> */
> public void inputChanged(Viewer viewer, Object oldInput, Object newInput) 
> {
> input = (TestElement) newInput;
> super.inputChanged(viewer, oldInput, newInput);
> }
> /* (non-Javadoc)
> * @see 
> org.eclipse.jface.tests.viewers.TestModelContentProvider#getElements(java.lang.Object)
> */
> public Object[] getElements(Object element) {
> Assert.isTrue(false,"Should not ever call getElements if lazy");
> return super.getElements(element);
> }
> }
>
> "Stefano Zaccaria" <szaccaria@xxxxxxxxxxxx> wrote in message 
> news:d04g25$1tv$1@xxxxxxxxxxxxxxxxxx
>> Hello to all,
>>    Can any body help me with TableViewer and SWT.VIRTUAL.
>>
>> I want to use a large table ( 100.000 rows ) in my program, but when I 
>> use
>> the Jface TableViewer the load of the table is very slow.
>> I read that whit the TableViewer SWT.VIRTUAL, the load is too fast. I try
>> put the SWT.VIRTUAL in the defition of the table, but it not fuction very
>> well. If some body give me a litle piece of code I very grateful to him.
>>
>> Thank very much.
>>
>> Stefano
>>
>>
>
>