eclipse/org.argeo.cms.swt/src/org/argeo/cms/swt/widgets/SwtTabularPart.java

   1 package org.argeo.cms.swt.widgets;
   2
   3 import java.util.function.Consumer;
   4
   5 import org.argeo.cms.swt.CmsSwtUtils;
   6 import org.argeo.cms.ux.widgets.Column;
   7 import org.argeo.cms.ux.widgets.TabularPart;
   8 import org.eclipse.swt.SWT;
   9 import org.eclipse.swt.events.SelectionEvent;
  10 import org.eclipse.swt.events.SelectionListener;
  11 import org.eclipse.swt.widgets.Composite;
  12 import org.eclipse.swt.widgets.Table;
  13 import org.eclipse.swt.widgets.TableColumn;
  14 import org.eclipse.swt.widgets.TableItem;
  15
  16 /** {@link TabularPart} implementation based on a {@link Table}. */
  17 public class SwtTabularPart implements TabularPart {
  18         private Composite area;
  19
  20         private final Table table;
  21
  22         private Consumer<Object> onSelected;
  23         private Consumer<Object> onAction;
  24
  25         public SwtTabularPart(Composite parent, int style) {
  26                 area = new Composite(parent, style);
  27                 area.setLayout(CmsSwtUtils.noSpaceGridLayout());
  28                 table = new Table(area, SWT.VIRTUAL | SWT.BORDER);
  29                 table.setLinesVisible(true);
  30         }
  31
  32         @Override
  33         public void refresh() {
  34                 // TODO optimise
  35                 table.clearAll();
  36                 table.addListener(SWT.SetData, event -> {
  37                         TableItem item = (TableItem) event.item;
  38                         refreshItem(item);
  39                 });
  40                 table.setItemCount(getItemCount());
  41                 CmsSwtUtils.fill(table);
  42
  43                 table.addSelectionListener(new SelectionListener() {
  44                         private static final long serialVersionUID = -5225905921522775948L;
  45
  46                         @Override
  47                         public void widgetSelected(SelectionEvent e) {
  48                                 if (onSelected != null)
  49                                         onSelected.accept(e.item.getData());
  50                         }
  51
  52                         @Override
  53                         public void widgetDefaultSelected(SelectionEvent e) {
  54                                 if (onAction != null)
  55                                         onAction.accept(e.item.getData());
  56                         }
  57                 });
  58
  59         }
  60
  61         @Override
  62         public void setInput(Object data) {
  63                 area.setData(data);
  64                 refresh();
  65         }
  66
  67         @Override
  68         public Object getInput() {
  69                 return area.getData();
  70         }
  71
  72         protected void refreshItem(TableItem item) {
  73                 int row = getTable().indexOf(item);
  74                 for (int i = 0; i < item.getParent().getColumnCount(); i++) {
  75                         Column<Object> column = (Column<Object>) item.getParent().getColumn(i).getData();
  76                         Object data = getData(row);
  77                         String text = data != null ? column.getText(data) : "";
  78                         item.setText(i, text);
  79                 }
  80         }
  81
  82         protected int getItemCount() {
  83                 return 0;
  84         }
  85
  86         protected Object getData(int row) {
  87                 return null;
  88         }
  89
  90         protected Table getTable() {
  91                 return table;
  92         }
  93
  94         public void onSelected(Consumer<Object> onSelected) {
  95                 this.onSelected = onSelected;
  96         }
  97
  98         public void onAction(Consumer<Object> onAction) {
  99                 this.onAction = onAction;
 100         }
 101
 102         @Override
 103         public void addColumn(Column<?> column) {
 104                 TableColumn swtColumn = new TableColumn(table, SWT.NONE);
 105                 swtColumn.setWidth(column.getWidth());
 106                 swtColumn.setData(column);
 107
 108         }
 109
 110         public Composite getArea() {
 111                 return area;
 112         }
 113
 114 }