Package com.google.gwt.view.client

Examples of com.google.gwt.view.client.Range

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      this.cache = new ArrayList<EntityInfo>(1000);
    }

    @Override
    protected void onRangeChanged(HasData<EntityInfo> display) {
      Range range = display.getVisibleRange();
      final int start = range.getStart();
      final int length = range.getLength();
     
      if (start + length < cache.size()) {
        List<EntityInfo> vals = cache.subList(start, start + length);
        updateRowData(start, vals);
      } else {
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    public void setPageStart(int index) {

        HasRows display = getDisplay();

        if (display != null) {
            Range range = display.getVisibleRange();
            int pageSize = range.getLength();
            if (!isRangeLimited() && display.isRowCountExact()) {
                index = Math.min(index, display.getRowCount() - pageSize);
            }
            index = Math.max(0, index);
            if (index != range.getStart()) {
                display.setVisibleRange(index, pageSize);
            }
        }
    }
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        return item;
    }

    @Override
    protected void onRangeChanged(final HasData<AuditLogItem> display) {
        Range range = display.getVisibleRange();
        int start = min(range.getStart(), store.size() - 1);
        int end = min(start + range.getLength(), store.size());
        List<AuditLogItem> items = store.subList(start, end);
        display.setRowData(start, items);
    }
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    // Add a range change handler.
    cellList.addRangeChangeHandler(new RangeChangeEvent.Handler() {
      @Override
      public void onRangeChange(RangeChangeEvent event) {
        Range range = event.getNewRange();
        int start = range.getStart();
        int length = range.getLength();

        // Create the data to push into the view. At this point, you could send
        // an asynchronous RPC request to a server.
        List<String> data = new ArrayList<String>();
        for (int i = start; i < start + length; i++) {
          data.add("Item " + i);
        }

        // Push the data into the list.
        cellList.setRowData(start, data);
      }
    });

    // Force the cellList to fire an initial range change event.
    cellList.setVisibleRangeAndClearData(new Range(0, 25), true);

    // Create paging controls.
    SimplePager pager = new SimplePager();
    pager.setDisplay(cellList);
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     * {@link #updateRowData(int, List)}.
     */
    @Override
    protected void onRangeChanged(HasData<String> display) {
      // Get the new range.
      final Range range = display.getVisibleRange();

      /*
       * Query the data asynchronously. If you are using a database, you can
       * make an RPC call here. We'll use a Timer to simulate a delay.
       */
      new Timer() {
        @Override
        public void run() {
          // We are creating fake data. Normally, the data will come from a
          // server.
          int start = range.getStart();
          int length = range.getLength();
          List<String> newData = new ArrayList<String>();
          for (int i = start; i < start + length; i++) {
            newData.add("Item " + i);
          }

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    SimplePager.Resources pagerResources = GWT.create( SimplePager.Resources.class );
    pager = new SimplePager( TextLocation.CENTER, pagerResources, false, 0, true ) {
      @Override
      public void setPageStart( int index ) {
        if ( getDisplay() != null ) {
          Range range = getDisplay().getVisibleRange();
          int pageSize = range.getLength();

          // Removed the min to show fixed ranges
          // if (isRangeLimited && display.isRowCountExact()) {
          // index = Math.min(index, display.getRowCount() - pageSize);
          // }

          index = Math.max( 0, index );
          if ( index != range.getStart() ) {
            getDisplay().setVisibleRange( index, pageSize );
          }
        }
      }
    };
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    List<String> values = createData(0, 62);
    display.setRowData(values);
    assertEquals(62, display.getRowCount());
    assertTrue(display.isRowCountExact());
    assertEquals(values, display.getVisibleItems());
    assertEquals(new Range(0, 62), display.getVisibleRange());

    // Add some data.
    List<String> moreValues = createData(62, 10);
    display.setVisibleRange(0, 100);
    display.setRowData(62, moreValues);
    assertEquals(72, display.getRowCount());
    assertTrue(display.isRowCountExact());
    assertEquals("test 62", display.getVisibleItem(62));
    assertEquals("test 71", display.getVisibleItem(71));
    assertEquals(72, display.getVisibleItems().size());
    assertEquals(new Range(0, 100), display.getVisibleRange());

    // Push the exact data again.
    display.setRowData(values);
    assertEquals(62, display.getRowCount());
    assertTrue(display.isRowCountExact());
    assertEquals(values, display.getVisibleItems());
    assertEquals(new Range(0, 62), display.getVisibleRange());
    display.getPresenter().flush();

    // Render one row and verify the index.
    display.setRowData(5, createData(100, 1));
    display.getPresenter().flush();
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  /**
   * Populate the entire range of a view.
   */
  protected void populateData(AbstractHasData<String> view) {
    Range range = view.getVisibleRange();
    int start = range.getStart();
    int length = range.getLength();
    view.setRowData(start, createData(start, length));
  }
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        new DefaultKeyboardSelectionHandler<String>(table);
    table.setKeyboardSelectionHandler(keyHandler);
    HasDataPresenter<String> presenter = table.getPresenter();

    table.setRowCount(100, true);
    table.setVisibleRange(new Range(50, 10));
    populateData(table);
    presenter.flush();
    table.setKeyboardPagingPolicy(KeyboardPagingPolicy.CHANGE_PAGE);

    // keyboardPrev in middle.
    table.setKeyboardSelectedRow(1);
    presenter.flush();
    assertEquals(1, table.getKeyboardSelectedRow());
    keyHandler.prevRow();
    presenter.flush();
    assertEquals(0, table.getKeyboardSelectedRow());

    // keyboardPrev at beginning goes to previous page.
    keyHandler.prevRow();
    populateData(table);
    presenter.flush();
    assertEquals(9, table.getKeyboardSelectedRow());
    assertEquals(new Range(40, 10), table.getVisibleRange());

    // keyboardNext in middle.
    table.setKeyboardSelectedRow(8);
    presenter.flush();
    assertEquals(8, table.getKeyboardSelectedRow());
    keyHandler.nextRow();
    presenter.flush();
    assertEquals(9, table.getKeyboardSelectedRow());

    // keyboardNext at end.
    keyHandler.nextRow();
    populateData(table);
    presenter.flush();
    assertEquals(0, table.getKeyboardSelectedRow());
    assertEquals(new Range(50, 10), table.getVisibleRange());

    // keyboardPrevPage.
    table.setKeyboardSelectedRow(5);
    presenter.flush();
    assertEquals(5, table.getKeyboardSelectedRow());
    keyHandler.prevPage();
    populateData(table);
    presenter.flush();
    assertEquals(0, table.getKeyboardSelectedRow());
    assertEquals(new Range(40, 10), table.getVisibleRange());

    // keyboardNextPage.
    table.setKeyboardSelectedRow(5);
    presenter.flush();
    assertEquals(5, table.getKeyboardSelectedRow());
    keyHandler.nextPage();
    populateData(table);
    presenter.flush();
    assertEquals(0, table.getKeyboardSelectedRow());
    assertEquals(new Range(50, 10), table.getVisibleRange());

    // keyboardHome.
    keyHandler.home();
    populateData(table);
    presenter.flush();
    assertEquals(0, table.getKeyboardSelectedRow());
    assertEquals(new Range(0, 10), table.getVisibleRange());

    // keyboardPrev at first row.
    keyHandler.prevRow();
    presenter.flush();
    assertEquals(0, table.getKeyboardSelectedRow());

    // keyboardEnd.
    keyHandler.end();
    populateData(table);
    presenter.flush();
    assertEquals(9, table.getKeyboardSelectedRow());
    assertEquals(new Range(90, 10), table.getVisibleRange());

    // keyboardNext at last row.
    keyHandler.nextRow();
    presenter.flush();
  }
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        new DefaultKeyboardSelectionHandler<String>(table);
    table.setKeyboardSelectionHandler(keyHandler);
    HasDataPresenter<String> presenter = table.getPresenter();

    table.setRowCount(100, true);
    table.setVisibleRange(new Range(50, 10));
    populateData(table);
    presenter.flush();
    table.setKeyboardPagingPolicy(KeyboardPagingPolicy.CURRENT_PAGE);

    // keyboardPrev in middle.
    table.setKeyboardSelectedRow(1);
    presenter.flush();
    assertEquals(1, table.getKeyboardSelectedRow());
    keyHandler.prevRow();
    presenter.flush();
    assertEquals(0, table.getKeyboardSelectedRow());

    // keyboardPrev at beginning.
    keyHandler.prevRow();
    presenter.flush();
    assertEquals(0, table.getKeyboardSelectedRow());
    assertEquals(new Range(50, 10), table.getVisibleRange());

    // keyboardNext in middle.
    table.setKeyboardSelectedRow(8);
    presenter.flush();
    assertEquals(8, table.getKeyboardSelectedRow());
    keyHandler.nextRow();
    presenter.flush();
    assertEquals(9, table.getKeyboardSelectedRow());

    // keyboardNext at end.
    keyHandler.nextRow();
    presenter.flush();
    assertEquals(9, table.getKeyboardSelectedRow());
    assertEquals(new Range(50, 10), table.getVisibleRange());

    // keyboardPrevPage.
    keyHandler.prevPage(); // ignored.
    presenter.flush();
    assertEquals(9, table.getKeyboardSelectedRow());
    assertEquals(new Range(50, 10), table.getVisibleRange());

    // keyboardNextPage.
    keyHandler.nextPage(); // ignored.
    presenter.flush();
    assertEquals(9, table.getKeyboardSelectedRow());
    assertEquals(new Range(50, 10), table.getVisibleRange());

    // keyboardHome.
    keyHandler.home();
    presenter.flush();
    assertEquals(0, table.getKeyboardSelectedRow());
    assertEquals(new Range(50, 10), table.getVisibleRange());

    // keyboardEnd.
    keyHandler.end();
    presenter.flush();
    assertEquals(9, table.getKeyboardSelectedRow());
    assertEquals(new Range(50, 10), table.getVisibleRange());
  }
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