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POGWT UiBinder CellTable is not rendered with AsyncDataProvider
 

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  1. POGWT UiBinder CellTable is not rendered with AsyncDataProvider
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    <p>I want to have on my page created with <code>UIBinder</code> a <code>CellTable</code> with data, received from server. I think I dont quite understand the logic of <code>UiBinder</code>. What steps should I do before calling <code>initWidget()</code>, and what I shouldn't ? <br> When I remove the call to <code>configureDataProvider()</code> the table appears, but it is empty, with progress bar running. When I include <code>configureDataProvider()</code>, the table is not rendered at all.</p> <p><strong>Please can you explain what is happening here?</strong></p> <pre class="lang-java prettyprint-override"><code>@UiField(provided = true) VerticalPanel tableSelection; @UiField(provided = true) Anchor productTableAnchor; @UiField(provided = true) Anchor ordersTableAnchor; @UiField(provided = true) Anchor staffTableAnchor; List&lt;ProductDTO&gt; products; @UiField(provided = true) CellTable&lt;ProductDTO&gt; productTable; @UiField(provided = true) SimplePager pager; public TableSelectionWidget() { SimplePager.Resources pagerResources = GWT .create(SimplePager.Resources.class); tableSelection = new VerticalPanel(); productTableAnchor = new Anchor(); ordersTableAnchor = new Anchor(); staffTableAnchor = new Anchor(); productTable = new CellTable&lt;ProductDTO&gt;(); productTable.setPageSize(10); configureTable(); pager = new SimplePager(TextLocation.CENTER, pagerResources, false, 0, true); pager.setDisplay(productTable); initWidget(uiBinder.createAndBindUi(this)); } private void configureTable() { Column&lt;ProductDTO, String&gt; nameColumn = new Column&lt;ProductDTO, String&gt;( new TextCell()) { @Override public String getValue(ProductDTO object) { return object.getName(); } }; Column&lt;ProductDTO, String&gt; priceColumn = new Column&lt;ProductDTO, String&gt;( new TextCell()) { @Override public String getValue(ProductDTO object) { return object.getPrice().toString(); } }; Column&lt;ProductDTO, String&gt; quantityColumn = new Column&lt;ProductDTO, String&gt;( new TextCell()) { @Override public String getValue(ProductDTO object) { return String.valueOf(object.getQuantity()); } }; productTable.addColumn(nameColumn, "Name"); productTable.addColumn(priceColumn, "Price"); productTable.addColumn(quantityColumn, "Qty"); configureDataProvider(); } private void configureDataProvider() { AsyncDataProvider&lt;ProductDTO&gt; provider = new AsyncDataProvider&lt;ProductDTO&gt;() { @Override protected void onRangeChanged(HasData&lt;ProductDTO&gt; display) { final int start = display.getVisibleRange().getStart(); int length = display.getVisibleRange().getLength(); AsyncCallback&lt;List&lt;ProductDTO&gt;&gt; callback = new AsyncCallback&lt;List&lt;ProductDTO&gt;&gt;() { public void onFailure(Throwable caught) { Window.alert(caught.getMessage()); } public void onSuccess(List&lt;ProductDTO&gt; result) { products = result; updateRowData(start, result); } }; productService.getAllProducts(callback); } }; provider.addDataDisplay(productTable); provider.updateRowCount(products.size(), true); } </code></pre> <p>EDIT Added ui.xml</p> <pre><code> &lt;!DOCTYPE ui:UiBinder SYSTEM "http://dl.google.com/gwt/DTD/xhtml.ent"&gt; &lt;ui:UiBinder xmlns:ui="urn:ui:com.google.gwt.uibinder" xmlns:g="urn:import:com.google.gwt.user.client.ui" xmlns:c="urn:import:com.google.gwt.user.cellview.client" xmlns:ct="urn:import:com.ooo1sk.client.widgets"&gt; &lt;ui:style&gt; &lt;/ui:style&gt; &lt;g:HTMLPanel&gt; &lt;g:VerticalPanel styleName="" ui:field="tableSelection"&gt; &lt;g:Anchor ui:field="ordersTableAnchor" text="Orders"&gt;&lt;/g:Anchor&gt; &lt;g:Anchor ui:field="productTableAnchor" text="Product"&gt;&lt;/g:Anchor&gt; &lt;g:Anchor ui:field="staffTableAnchor" text="Staff"&gt;&lt;/g:Anchor&gt; &lt;/g:VerticalPanel&gt; &lt;g:HTMLPanel&gt; &lt;table cellspacing='0' cellpadding='0' style='width:100%;'&gt; &lt;tr&gt; &lt;td valign='top'&gt; &lt;c:CellTable addStyleNames='infoTable' pageSize='15' ui:field='productTable' /&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align='center'&gt; &lt;c:SimplePager ui:field='pager' /&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/g:HTMLPanel&gt; &lt;/g:HTMLPanel&gt; &lt;/ui:UiBinder&gt; </code></pre> <p>UPD: after changes it works, but keeps showing me only the first 15 rows, however Pager shows all 91 rows and changes number after clicking.</p> <pre><code> private void configureDataProvider() { AsyncDataProvider&lt;ProductDTO&gt; provider = new AsyncDataProvider&lt;ProductDTO&gt;() { @Override protected void onRangeChanged(HasData&lt;ProductDTO&gt; display) { final int start = display.getVisibleRange().getStart(); final int length = display.getVisibleRange().getLength(); productService .getAllProducts(new AsyncCallback&lt;List&lt;ProductDTO&gt;&gt;() { public void onSuccess(List&lt;ProductDTO&gt; result) { label.setText("start " + start + " " + "resultsize " + result.size() + " " + "length " + length); products = result; updateRowCount(result.size(), true); updateRowData(start, result); } public void onFailure(Throwable caught) { Window.alert(caught.getMessage()); } }); } }; provider.addDataDisplay(productTable); } </code></pre> <p>Ok, playing with numbers fixed the issue. in <code>updateRowData(start, result);</code> I changed <code>start</code> to <code>0</code> and it works fine now. Still, I would greatly appreciate any comment of experts on this.</p>
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    1. COPlease include the UiBinder source file (`TableSelectionWidget.ui.xml`). Why are you creating all of the widgets in code, instead of using the UiBinder XML file to create them?
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