Refactor: Separate Events and Keyevents and use enums

Negative values for internal events are preventing further refactoring.

Add a new kind of key and split internal events (now Event) and
Android's key events (now Keyevent).

Use enums events and modifiers outside of the KeyValue class.
Internally, they are converted to and from integer.

1 files changed, 22 insertions, 20 deletions

diff --git a/srcs/juloo.keyboard2/Pointers.java b/srcs/juloo.keyboard2/Pointers.java
index b26616e..7ef714b 100644
--- a/srcs/juloo.keyboard2/Pointers.java
+++ b/srcs/juloo.keyboard2/Pointers.java
@@ -32,19 +32,18 @@ public final class Pointers implements Handler.Callback
   /** When [skip_latched] is true, don't take flags of latched keys into account. */
   private Modifiers getModifiers(boolean skip_latched)
   {
-    int size = _ptrs.size();
-    int[] mods = new int[size];
-    for (int i = 0; i < size; i++)
+    int n_ptrs = _ptrs.size();
+    KeyValue.Modifier[] mods = new KeyValue.Modifier[n_ptrs];
+    int n_mods = 0;
+    for (int i = 0; i < n_ptrs; i++)
     {
       Pointer p = _ptrs.get(i);
-      mods[i] =
-        ((skip_latched && p.pointerId == -1
-          && (p.flags & KeyValue.FLAG_LOCKED) == 0)
-         || p.value == null
-         || p.value.getKind() != KeyValue.Kind.Modifier)
-        ? 0 : p.value.getModifier();
+      if (p.value != null && p.value.getKind() == KeyValue.Kind.Modifier
+          && !(skip_latched && p.pointerId == -1
+            && (p.flags & KeyValue.FLAG_LOCKED) == 0))
+        mods[n_mods++] = p.value.getModifier();
     }
-    return Modifiers.ofArray(mods);
+    return Modifiers.ofArray(mods, n_mods);
   }
 
   public void clear()
@@ -386,12 +385,15 @@ public final class Pointers implements Handler.Callback
       Sorted in the order they should be evaluated. */
   public static final class Modifiers
   {
-    private final int[] _mods;
+    private final KeyValue.Modifier[] _mods;
     private final int _size;
 
-    private Modifiers(int[] m, int s) { _mods = m; _size = s; }
+    private Modifiers(KeyValue.Modifier[] m, int s)
+    {
+      _mods = m; _size = s;
+    }
 
-    public int get(int i) { return _mods[i]; }
+    public KeyValue.Modifier get(int i) { return _mods[_size - 1 - i]; }
     public int size() { return _size; }
 
     @Override
@@ -402,20 +404,20 @@ public final class Pointers implements Handler.Callback
       return Arrays.equals(_mods, ((Modifiers)obj)._mods);
     }
 
-    public static final Modifiers EMPTY = new Modifiers(new int[0], 0);
+    public static final Modifiers EMPTY =
+      new Modifiers(new KeyValue.Modifier[0], 0);
 
-    protected static Modifiers ofArray(int[] mods)
+    protected static Modifiers ofArray(KeyValue.Modifier[] mods, int size)
     {
-      int size = mods.length;
-      // Sort and remove duplicates and [0]s.
+      // Sort and remove duplicates and nulls.
       if (size > 1)
       {
-        Arrays.sort(mods);
+        Arrays.sort(mods, 0, size);
         int j = 0;
         for (int i = 0; i < size; i++)
         {
-          int m = mods[i];
-          if (m != 0 && (i + 1 >= size || m != mods[i + 1]))
+          KeyValue.Modifier m = mods[i];
+          if (m != null && (i + 1 >= size || m != mods[i + 1]))
           {
             mods[j] = m;
             j++;