eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/checklist/listener/ChecklistDropdownSelectionListener.java

   1 package eu.etaxonomy.taxeditor.editor.view.checklist.listener;
   2
   3 import java.util.SortedSet;
   4
   5 import org.eclipse.jface.viewers.TableViewer;
   6 import org.eclipse.swt.SWT;
   7 import org.eclipse.swt.events.SelectionAdapter;
   8 import org.eclipse.swt.events.SelectionEvent;
   9 import org.eclipse.swt.graphics.Point;
  10 import org.eclipse.swt.graphics.Rectangle;
  11 import org.eclipse.swt.widgets.Menu;
  12 import org.eclipse.swt.widgets.MenuItem;
  13 import org.eclipse.swt.widgets.Table;
  14 import org.eclipse.swt.widgets.TableColumn;
  15 import org.eclipse.swt.widgets.ToolItem;
  16
  17 import eu.etaxonomy.cdm.model.common.DefinedTermBase;
  18 import eu.etaxonomy.taxeditor.editor.view.checklist.ChecklistEditor;
  19 import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
  20
  21 /**
  22  * Handles drop down menu selection. Available items are defined in the
  23  * enumeration SearchOption.
  24  *
  25  * @author n.hoffmann
  26  * @created Feb 2, 2010
  27  * @version 1.0
  28  */
  29 public class ChecklistDropdownSelectionListener extends SelectionAdapter {
  30
  31     private final Menu menu;
  32     private final ToolItem dropdown;
  33     private final ChecklistEditor editor;
  34     private final SortedSet<DefinedTermBase> termSet;
  35
  36     public ChecklistDropdownSelectionListener(ToolItem dropdown, ChecklistEditor editor,
  37             SortedSet<DefinedTermBase> termSet) {
  38         this.dropdown = dropdown;
  39         this.editor = editor;
  40         this.termSet = termSet;
  41         menu = new Menu(dropdown.getParent().getShell());
  42     }
  43
  44     // SearchOption option
  45     public void add(DefinedTermBase<DefinedTermBase> term) {
  46         MenuItem menuItem = new MenuItem(menu, SWT.CHECK);
  47         menuItem.setText(term.getTitleCache());
  48         if (PreferencesUtil.getPreferenceStore().getBoolean(term.getUuid().toString())) {
  49             menuItem.setSelection(true);
  50         } else {
  51             menuItem.setSelection(false);
  52         }
  53         menuItem.addSelectionListener(new SelectionAdapter() {
  54             @Override
  55             public void widgetSelected(SelectionEvent event) {
  56                 MenuItem selected = (MenuItem) event.widget;
  57
  58                 TableViewer viewer = (TableViewer) editor.getViewer();
  59                 final Table table = viewer.getTable();
  60                 // TODO make it selectable according to selection event
  61                 TableColumn column = null;
  62                 DefinedTermBase<DefinedTermBase> selectedTerm = null;
  63                 if (termSet != null) {
  64                     int i = 0;
  65                     for (DefinedTermBase<DefinedTermBase> term : termSet) {
  66                         if (term != null) {
  67                             if (selected.getText().equalsIgnoreCase(term.getTitleCache())) {
  68                                 selectedTerm = term;
  69                                 column = table.getColumn(4 + i);
  70                             }
  71                             i++;
  72                         }
  73                     }
  74                 }
  75                 if (column != null && column.getWidth() == 0) {
  76                     // save column status if shown or not
  77                     if (selectedTerm != null) {
  78                         PreferencesUtil.getPreferenceStore().setValue(selectedTerm.getUuid().toString(), true);
  79                     }
  80                     column.setWidth(100);
  81                 } else if (column != null) {
  82                     if (selectedTerm != null) {
  83                         PreferencesUtil.getPreferenceStore().setValue(selectedTerm.getUuid().toString(), false);
  84                     }
  85                     column.setWidth(0);
  86                 }
  87                 viewer.refresh();
  88             }
  89         });
  90     }
  91
  92     @Override
  93     public void widgetSelected(SelectionEvent event) {
  94         if (event.detail == SWT.ARROW) {
  95             ToolItem item = (ToolItem) event.widget;
  96             Rectangle rect = item.getBounds();
  97             Point pt = item.getParent().toDisplay(new Point(rect.x, rect.y));
  98             menu.setLocation(pt.x, pt.y + rect.height);
  99             menu.setVisible(true);
 100         } else {
 101             menu.setVisible(true);
 102         }
 103     }
 104 }