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.resource.FontRegistry;
   5 import org.eclipse.jface.util.IPropertyChangeListener;
   6 import org.eclipse.jface.viewers.TableViewer;
   7 import org.eclipse.swt.graphics.Color;
   8 import org.eclipse.swt.graphics.Font;
   9 import org.eclipse.ui.themes.IThemeManager;
  10
  11 import net.mograsim.machine.mi.MicroInstructionMemory;
  12
  13 public class ColorProvider
  14 {
  15         private final TableViewer viewer;
  16         private final IThemeManager themeManager;
  17         private long highlightedAddress = -1;
  18         private ColorRegistry cRegistry;
  19         private FontRegistry fRegistry;
  20
  21         private final static String font = "net.mograsim.plugin.table_font",
  22                         colorModifBackground = "net.mograsim.plugin.modified_cell_bg_color",
  23                         colorModifForeground = "net.mograsim.plugin.modified_cell_fg_color",
  24                         colorHighlightedForeground = "net.mograsim.plugin.highlighted_cell_fg_color",
  25                         colorHighlightedBackground = "net.mograsim.plugin.highlighted_cell_bg_color";
  26         private final IPropertyChangeListener updateListener;
  27
  28         public ColorProvider(TableViewer viewer, IThemeManager themeManager)
  29         {
  30                 this.viewer = viewer;
  31                 this.themeManager = themeManager;
  32                 this.cRegistry = themeManager.getCurrentTheme().getColorRegistry();
  33                 this.fRegistry = themeManager.getCurrentTheme().getFontRegistry();
  34                 updateListener = e ->
  35                 {
  36                         switch (e.getProperty())
  37                         {
  38                         case IThemeManager.CHANGE_CURRENT_THEME:
  39                                 cRegistry = themeManager.getCurrentTheme().getColorRegistry();
  40                                 fRegistry = themeManager.getCurrentTheme().getFontRegistry();
  41                                 //$FALL-THROUGH$
  42                         case font:
  43                         case colorModifBackground:
  44                         case colorModifForeground:
  45                                 viewer.refresh();
  46                                 break;
  47                         default:
  48                                 break;
  49                         }
  50                 };
  51                 themeManager.addPropertyChangeListener(updateListener);
  52         }
  53
  54         public Color getBackground(Object element, int column)
  55         {
  56                 InstructionTableRow row = (InstructionTableRow) element;
  57                 if (isDefault(row, column))
  58                 {
  59                         if (isHighlighted(row))
  60                                 return cRegistry.get(colorHighlightedBackground);
  61                         return viewer.getTable().getBackground();
  62                 }
  63                 return cRegistry.get(colorModifBackground);
  64         }
  65
  66         public Color getForeground(Object element, int column)
  67         {
  68                 InstructionTableRow row = (InstructionTableRow) element;
  69                 if (isDefault(row, column))
  70                 {
  71                         if (isHighlighted(row))
  72                                 return cRegistry.get(colorHighlightedForeground);
  73                         return viewer.getTable().getForeground();
  74                 }
  75                 return cRegistry.get(colorModifForeground);
  76         }
  77
  78         public Font getFont(Object element, int column)
  79         {
  80                 InstructionTableRow row = (InstructionTableRow) element;
  81                 return !isDefault(row, column) || isHighlighted(row) ? fRegistry.getBold(font) : fRegistry.get(font);
  82         }
  83
  84         private static boolean isDefault(InstructionTableRow row, int column)
  85         {
  86                 return column == -1 ? true : row.data.getCell(row.address).getParameter(column).isDefault();
  87         }
  88
  89         private boolean isHighlighted(InstructionTableRow row)
  90         {
  91                 return highlightedAddress == row.address;
  92         }
  93
  94         /**
  95          * @param index Index of the row to highlight; An negative index means no row is highlighted
  96          */
  97         public void highlight(long row)
  98         {
  99                 highlightedAddress = row + ((MicroInstructionMemory) viewer.getInput()).getDefinition().getMinimalAddress();
 100         }
 101
 102         public void dispose()
 103         {
 104                 themeManager.removePropertyChangeListener(updateListener);
 105         }
 106 }