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.api.cms.ux.CmsIcon;
   6 import org.argeo.cms.swt.CmsSwtTheme;
   7 import org.argeo.cms.swt.CmsSwtUtils;
   8 import org.argeo.cms.ux.widgets.Column;
   9 import org.argeo.cms.ux.widgets.TabularPart;
  10 import org.eclipse.swt.SWT;
  11 import org.eclipse.swt.events.SelectionEvent;
  12 import org.eclipse.swt.events.SelectionListener;
  13 import org.eclipse.swt.graphics.Image;
  14 import org.eclipse.swt.widgets.Composite;
  15 import org.eclipse.swt.widgets.Table;
  16 import org.eclipse.swt.widgets.TableColumn;
  17 import org.eclipse.swt.widgets.TableItem;
  18
  19 /** {@link TabularPart} implementation based on a {@link Table}. */
  20 public class SwtTabularPart implements TabularPart {
  21         private Composite area;
  22
  23         private final Table table;
  24
  25         private Consumer<Object> onSelected;
  26         private Consumer<Object> onAction;
  27
  28         private CmsSwtTheme theme;
  29
  30         public SwtTabularPart(Composite parent, int style) {
  31                 theme = CmsSwtUtils.getCmsTheme(parent);
  32                 area = new Composite(parent, style);
  33                 area.setLayout(CmsSwtUtils.noSpaceGridLayout());
  34                 table = new Table(area, SWT.VIRTUAL | SWT.BORDER);
  35                 table.setLinesVisible(true);
  36         }
  37
  38         @Override
  39         public void refresh() {
  40                 // TODO optimise
  41                 table.clearAll();
  42                 table.addListener(SWT.SetData, event -> {
  43                         TableItem item = (TableItem) event.item;
  44                         refreshItem(item);
  45                 });
  46                 table.setItemCount(getItemCount());
  47                 CmsSwtUtils.fill(table);
  48
  49                 table.addSelectionListener(new SelectionListener() {
  50                         private static final long serialVersionUID = -5225905921522775948L;
  51
  52                         @Override
  53                         public void widgetSelected(SelectionEvent e) {
  54                                 if (onSelected != null)
  55                                         onSelected.accept(getDataFromEvent(e));
  56                         }
  57
  58                         @Override
  59                         public void widgetDefaultSelected(SelectionEvent e) {
  60                                 if (onAction != null)
  61                                         onAction.accept(getDataFromEvent(e));
  62                         }
  63                 });
  64
  65         }
  66
  67         protected Object getDataFromEvent(SelectionEvent e) {
  68                 Object data = e.item.getData();
  69                 if (data == null)
  70                         data = getData(getTable().indexOf((TableItem) e.item));
  71                 return data;
  72         }
  73
  74         @Override
  75         public void setInput(Object data) {
  76                 area.setData(data);
  77                 refresh();
  78         }
  79
  80         @Override
  81         public Object getInput() {
  82                 return area.getData();
  83         }
  84
  85         protected void refreshItem(TableItem item) {
  86                 int row = getTable().indexOf(item);
  87                 for (int i = 0; i < item.getParent().getColumnCount(); i++) {
  88                         Column<Object> column = (Column<Object>) item.getParent().getColumn(i).getData();
  89                         Object data = getData(row);
  90                         item.setData(data);
  91                         String text = data != null ? column.getText(data) : "";
  92                         if (text != null)
  93                                 item.setText(i, text);
  94                         CmsIcon icon = column.getIcon(data);
  95                         if (icon != null) {
  96                                 Image image = theme.getSmallIcon(icon);
  97                                 item.setImage(i, image);
  98                         }
  99                 }
 100         }
 101
 102         protected int getItemCount() {
 103                 return 0;
 104         }
 105
 106         protected Object getData(int row) {
 107                 return null;
 108         }
 109
 110         protected Table getTable() {
 111                 return table;
 112         }
 113
 114         public void onSelected(Consumer<Object> onSelected) {
 115                 this.onSelected = onSelected;
 116         }
 117
 118         public void onAction(Consumer<Object> onAction) {
 119                 this.onAction = onAction;
 120         }
 121
 122         @Override
 123         public void addColumn(Column<?> column) {
 124                 TableColumn swtColumn = new TableColumn(table, SWT.NONE);
 125                 swtColumn.setWidth(column.getWidth());
 126                 swtColumn.setData(column);
 127
 128         }
 129
 130         public Composite getArea() {
 131                 return area;
 132         }
 133
 134 }