plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/tables/mi/ColorProvider.java

   1 package net.mograsim.plugin.tables.mi;
   2
   3 import org.eclipse.jface.resource.ColorRegistry;
   4 import org.eclipse.jface.util.IPropertyChangeListener;
   5 import org.eclipse.jface.viewers.TableViewer;
   6 import org.eclipse.swt.graphics.Color;
   7 import org.eclipse.ui.themes.IThemeManager;
   8
   9 public class ColorProvider
  10 {
  11         private final TableViewer viewer;
  12         private final IThemeManager themeManager;
  13         private ColorRegistry cRegistry;
  14
  15         private final static String modifBackground = "net.mograsim.plugin.modified_cell_bg_color",
  16                         modifForeground = "net.mograsim.plugin.modified_cell_fg_color";
  17         private final IPropertyChangeListener updateListener;
  18
  19         public ColorProvider(TableViewer viewer, IThemeManager themeManager)
  20         {
  21                 this.viewer = viewer;
  22                 this.themeManager = themeManager;
  23                 this.cRegistry = themeManager.getCurrentTheme().getColorRegistry();
  24                 updateListener = e ->
  25                 {
  26                         switch (e.getProperty())
  27                         {
  28                         case IThemeManager.CHANGE_CURRENT_THEME:
  29                                 cRegistry = themeManager.getCurrentTheme().getColorRegistry();
  30                                 //$FALL-THROUGH$
  31                         case modifBackground:
  32                         case modifForeground:
  33                                 viewer.refresh();
  34                                 break;
  35                         default:
  36                                 break;
  37                         }
  38                 };
  39                 themeManager.addPropertyChangeListener(updateListener);
  40         }
  41
  42         public Color getBackground(Object element, int index)
  43         {
  44                 InstructionTableRow row = (InstructionTableRow) element;
  45
  46                 return row.data.getCell(row.address).getParameter(index).isDefault() ? viewer.getTable().getBackground()
  47                                 : cRegistry.get(modifBackground);
  48         }
  49
  50         public Color getForeground(Object element, int index)
  51         {
  52                 InstructionTableRow row = (InstructionTableRow) element;
  53                 return row.data.getCell(row.address).getParameter(index).isDefault() ? viewer.getTable().getForeground()
  54                                 : cRegistry.get(modifForeground);
  55         }
  56
  57         public void dispose()
  58         {
  59                 themeManager.removePropertyChangeListener(updateListener);
  60         }
  61 }