package bluej.stride.generic;

import bluej.stride.operations.FrameOperation;
import threadchecker.OnThread;
import threadchecker.Tag;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;




| Holds a list of all the extensions, and information about them (e.g. shortcut key, description)
|
public abstract class ExtensionsDictionary
{       

   public static class Entry
{              
private final FrameOperation operation;
       
      private final List<Character> shortcutKeys;
       
      private final String name;
       
      private final String description;
      
      private final boolean validOnSelection;

       
      public Entry(List<Character> shortcutKeys, FrameOperation operation, boolean validOnSelection, 
      String name, String description)
       {            
         this.shortcutKeys = new ArrayList<>(shortcutKeys);
           
         this.operation = operation;
         
         this.name = name;
           
         this.description = description;
           
         this.validOnSelection = validOnSelection;         
         }

       
      public Entry(char shortcutKey, FrameOperation operation, boolean validOnSelection, 
      String name, String description)
       {
         this(Arrays.asList(shortcutKey), operation, validOnSelection, 
         name, description);         
         }

      

       
      public boolean hasShortcut(char k)
{
return shortcutKeys.contains(k); 
         }

       
      public List getReadOnlyShortcuts()
{
return Collections.unmodifiableList(shortcutKeys); 
         }

       
      public FrameOperation getOperation()
{
return operation; 
         }

       
      public String getName()
{
return name; 
         }

       
      public String getDescription()
{
return description; 
         }

      
      
      

      @OnThread(Tag.FXPlatform)
       
      public void activate(Frame frame)
{
operation.activate(frame); 
         }

       
      public boolean validOnSelection()
{
return validOnSelection; 
         }

       
      public String getShortcuts()
       {            
         StringBuilder builder = new StringBuilder();
         builder.append(shortcutKeys.get(0));
           
         for (int i = 1; i < shortcutKeys.size(); i++) {
            builder.append(", ").append(shortcutKeys.get(i));             
            }
         return builder.toString();         
         }     
      }

   
   private final List<Entry> entries;

   
   protected ExtensionsDictionary(List<Entry> entries)
   {        
      this.entries = entries;     
      }
    
   
   public List getAllExtensions()
   {        
      return entries;     
      }
    
   
   
   
   
   
   
   
   
   

   
   


| Returns empty list if no block for that key
|
public List getExtyensionsForShortcutKey(char k)
   {
      return entries.stream().filter(e -> e.hasShortcut(k)).collect(Collectors.toList());     
      }      
   }