net.mograsim.plugin.core/src/net/mograsim/plugin/memory/MemoryTableContentProvider.java

   1 package net.mograsim.plugin.memory;
   2
   3 import org.eclipse.jface.viewers.IStructuredContentProvider;
   4
   5 import net.mograsim.machine.MainMemory;
   6
   7 public class MemoryTableContentProvider implements IStructuredContentProvider
   8 {
   9         private long lower;
  10         private int amount;
  11         public final static int limit = 128;
  12
  13         @Override
  14         public Object[] getElements(Object arg0)
  15         {
  16                 if (arg0 == null)
  17                         return new Object[0];
  18                 MainMemory memory = (MainMemory) arg0;
  19                 lower = Long.max(lower, memory.getDefinition().getMinimalAddress());
  20                 Object[] rows = new Object[amount];
  21                 for (int i = 0; i < amount; i++)
  22                         rows[i] = new MemoryTableRow(lower + i, memory);
  23                 return rows;
  24         }
  25
  26         /**
  27          * Sets the bounds for the addresses in memory to be provided to the table.
  28          *
  29          * @param lower  lower bound for address (inclusive)
  30          * @param amount amount of cells to show; limited to {@link MemoryTableContentProvider#limit}
  31          */
  32         public void setAddressRange(long lower, int amount)
  33         {
  34                 this.lower = lower;
  35                 this.amount = Integer.min(Integer.max(amount, 0), limit);
  36         }
  37
  38         public void setLowerBound(long lower)
  39         {
  40                 setAddressRange(lower, amount);
  41         }
  42
  43         public void setAmount(int amount)
  44         {
  45                 setAddressRange(lower, amount);
  46         }
  47
  48         public long getLowerBound()
  49         {
  50                 return lower;
  51         }
  52
  53         public int getAmount()
  54         {
  55                 return amount;
  56         }
  57 }