GWT單元格導致排序問題

Question

我創建了一個「ColorCell」，它只是顯示一個顏色塊。但是，如果我將它放在一列中，則排序是「逐個」，意味着ColorCell後面的任何列對之前的列進行了排序。刪除ColorCell可以解決問題。發生什麼事？這是單元格的代碼並添加到表格中。

colorColumn.setSortable(false); 
table.addColumn(colorColumn); 
table.setColumnWidth(colorColumn, "16px"); 

ColumnSortEvent.ListHandler<HasMeasures> columnSortHandler = new ColumnSortEvent.ListHandler<HasMeasures>(
     resultsDataProvider.getList()); 
table.addColumnSortHandler(columnSortHandler); 
... code that adds other columns to sortHandler 

public class ColorCell<C> implements Cell<C> { 

    interface Template extends SafeHtmlTemplates { 
    @Template("<div></div><div>{0}</div>") 
    SafeHtml noColorCell(SafeHtml cellContents); 

    /** 
    * The wrapper around the image vertically aligned to the bottom. 
    */ 
    @Template("<div style=\"width:14px;height:14px;float:left;background-color:{0};\"></div>") 
    SafeHtml colorBlockCell(String color); 

    } 

    /** 
    * The default spacing between the icon and the text in pixels. 
    */ 
    private static final int DEFAULT_SPACING = 4; 

    private static Template template; 



    public ColorCell() { 
    this(DEFAULT_SPACING); 
    } 

    public ColorCell(int spacing) { 
    if (template == null) { 
     template = GWT.create(Template.class); 
    } 
    } 

    public boolean dependsOnSelection() { 
    return false; 
    } 

    public Set<String> getConsumedEvents() { 
    return null; 
    } 

    public boolean handlesSelection() { 
    return false; 
    } 

    public boolean isEditing(Context context, Element parent, C value) { 
    return false; 
    } 

    public void onBrowserEvent(Context context, Element parent, C value, 
     NativeEvent event, ValueUpdater<C> valueUpdater) { 
    } 

    public void render(Context context, C value, SafeHtmlBuilder sb) { 
    String color = getColorUsed(context, value); 
    if (color != null) { 
     sb.append(template.colorBlockCell(color)); 
    } 

    } 

    public boolean resetFocus(Context context, Element parent, C value) { 
    return true; 
    } 

    public void setValue(Context context, Element parent, C value) { 
    } 

    /** 
    * Check if the icon should be used for the value. If the icon should not be 
    * used, a placeholder of the same size will be used instead. The default 
    * implementations returns true. 
    * 
    * @param value the value being rendered 
    * @return true to use the icon, false to use a placeholder 
    */ 
    protected String getColorUsed(Context context, C value) { 
    return null; 
    } 

    /** 
    * Get the parent element of the decorated cell. 
    * 
    * @param parent the parent of this cell 
    * @return the decorated cell's parent 
    */ 
    private Element getCellParent(Element parent) { 
    return parent; //.getChild(1).cast(); 
    } 
} 

Answer 1

您是否將ColorCell添加爲與下一個/上一個標題相同的標題？這將合併ColorCell的標題並添加一個collspan。我的猜測是它可能會導致以下列的列索引不正確。