Some renames and javadoc.

src/main/java/net/rubygrapefruit/platform/internal/WindowsTerminals.java

@@ -0,0 +1,35 @@
+package net.rubygrapefruit.platform.internal;
+
+import net.rubygrapefruit.platform.NativeException;
+import net.rubygrapefruit.platform.Terminal;
+import net.rubygrapefruit.platform.Terminals;
+import net.rubygrapefruit.platform.internal.jni.WindowsConsoleFunctions;
+
+public class WindowsTerminals implements Terminals {
+    private static Output currentlyOpen;
+    private static WindowsTerminal current;
+
+    public boolean isTerminal(Output output) {
+        FunctionResult result = new FunctionResult();
+        boolean console = WindowsConsoleFunctions.isConsole(output.ordinal(), result);
+        if (result.isFailed()) {
+            throw new NativeException(String.format("Could not determine if %s is a console: %s", output,
+                    result.getMessage()));
+        }
+        return console;
+    }
+
+    public Terminal getTerminal(Output output) {
+        if (currentlyOpen !=null && currentlyOpen != output) {
+            throw new UnsupportedOperationException("Currently only one output can be used as a terminal.");
+        }
+
+        if (current == null) {
+            current = new WindowsTerminal(output);
+            current.init();
+        }
+
+        currentlyOpen = output;
+        return current;
+    }
+}