Java 类org.eclipse.jface.viewers.ILazyContentProvider 实例源码

private void createTableViewer() {
    table = new Table(tableComposite, SWT.VIRTUAL | SWT.FULL_SELECTION | SWT.MULTI);
    tableViewer = new TableViewer(table);
    table.setHeaderVisible(true);
    toolkit.adapt(table);
    toolkit.paintBordersFor(table);
    toolkit.adapt(table, true, true);

    tableViewer.setContentProvider(new ILazyContentProvider() {
        public void updateElement(int index) {
            tableViewer.replace(entryList.getKey(index), index);
        }
        public void dispose() {
        }
        public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
        }
    });
    tableViewer.addDoubleClickListener(new IDoubleClickListener() {
        public void doubleClick(DoubleClickEvent event) {
            new EditEntryAction().run();
        }
    });
}

private void createTableViewer() {
    table = new Table(tableComposite, SWT.VIRTUAL | SWT.FULL_SELECTION | SWT.MULTI);
    tableViewer = new TableViewer(table);
    table.setHeaderVisible(true);
    toolkit.adapt(table);
    toolkit.paintBordersFor(table);
    toolkit.adapt(table, true, true);

    tableViewer.setContentProvider(new ILazyContentProvider() {
        public void updateElement(int index) {
            tableViewer.replace(entryList.getKey(index), index);
        }
        public void dispose() {
        }
        public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
        }
    });
    tableViewer.addDoubleClickListener(new IDoubleClickListener() {
        public void doubleClick(DoubleClickEvent event) {
            new EditEntryAction().run();
        }
    });
}

private void createTableViewer() {
    table = new Table(tableComposite, SWT.VIRTUAL | SWT.FULL_SELECTION | SWT.MULTI);
    tableViewer = new TableViewer(table);
    table.setHeaderVisible(true);
    toolkit.adapt(table);
    toolkit.paintBordersFor(table);
    toolkit.adapt(table, true, true);

    tableViewer.setContentProvider(new ILazyContentProvider() {
        public void updateElement(int index) {
            tableViewer.replace(entryList.getKey(index), index);
        }
        public void dispose() {
        }
        public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
        }
    });
    tableViewer.addDoubleClickListener(new IDoubleClickListener() {
        public void doubleClick(DoubleClickEvent event) {
            new EditEntryAction().run();
        }
    });
}

private static void initTableViewer(TableViewer tableViewer, ElementTypes elementTypes, Object input,
        IElementBinding elementBinding) {

    IViewerType viewerType = new TableViewerType();

    Table table = tableViewer.getTable();
    Class<?> contentProviderInterfaceType = IStructuredContentProvider.class;
    if ((table.getStyle() & SWT.VIRTUAL) != 0) {
        contentProviderInterfaceType = ILazyContentProvider.class;
    }

    registerTableListeners(table);

    initViewer(tableViewer, elementTypes, input, elementBinding, viewerType, contentProviderInterfaceType);
}

public void initialize(Composite composite, int defaultOrientation) {
    display = composite.getDisplay();
    composite.addDisposeListener((DisposeListener) this::dispose);

    tableViewer = new TableViewer(composite, SWT.MULTI | SWT.FULL_SELECTION | SWT.VIRTUAL | SWT.NO_BACKGROUND | SWT.DOUBLE_BUFFERED );
    table = tableViewer.getTable();

       GridData gridData = new GridData();
       gridData.verticalAlignment = GridData.FILL;
       gridData.horizontalSpan = 2;
       gridData.grabExcessHorizontalSpace = true;
       gridData.grabExcessVerticalSpace = true;
       gridData.horizontalAlignment = GridData.FILL;
       tableViewer.getControl().setLayoutData(gridData);

    tableViewer.setContentProvider((ILazyContentProvider) rowIndex -> tableViewer.replace(contentProvider().getTableEntries().get(rowIndex), rowIndex));
    table.addListener(SWT.Selection, event-> {
        TableItem item = (TableItem) event.item;
        contentProvider().setCursorIndex(contentProvider().getRowIndex((RankedItem<T>) item.getData()));
        handleSelection();
    });
    composite.getShell().addListener(SWT.Resize, event ->  autoAdjustColumnWidths(composite));

    // TODO try throttleLast or custom scheduler
    //subjectFilter.debounce(0, TimeUnit.MILLISECONDS).subscribe( filter -> handleRefresh(filter));

}

public DocTableWidget(Composite parent, int style) {
        super(parent, style);

        tv = new TableViewer(this, 0);
        createColumns();

        class ContentProvider implements ILazyContentProvider, IStructuredContentProvider {
            @Override public Object[] getElements(Object inputElement) {
                return docs.toArray();
            }

            @Override public void dispose() {

            }

            @Override public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
                System.out.println("inputChanged");
//              this.model = (Model) newInput;
            }

            @Override public void updateElement(int index) {
                Object row = docs.get(index);
//              row[2] = row[0] + " " + row[1];
                tv.replace(row, index);
            }
        }
    }

private void createTableViewer() {
    table = new Table(tableComposite, SWT.VIRTUAL | SWT.FULL_SELECTION
            | SWT.MULTI);
    tableViewer = new TableViewer(table);
    table.setHeaderVisible(true);
    toolkit.adapt(table);
    toolkit.paintBordersFor(table);
    toolkit.adapt(table, true, true);

    tableViewer.setContentProvider(new ILazyContentProvider() {
        public void updateElement(int index) {
            tableViewer.replace(entryList.getKey(index), index);
        }

        public void dispose() {
        }

        public void inputChanged(Viewer viewer, Object oldInput,
                Object newInput) {
        }
    });
    tableViewer.addDoubleClickListener(new IDoubleClickListener() {
        public void doubleClick(DoubleClickEvent event) {
            new EditEntryAction().run();
        }
    });
}