cleanup

[nikiroo-utils.git] / src / jexer / backend / MultiBackend.java

diff --git a/src/jexer/backend/MultiBackend.java b/src/jexer/backend/MultiBackend.java
index a397c65510749d101cdc007f1727453328c12914..5e4d3ca11224a274bdcb33a6fd5d3c338bf36ef4 100644 (file)
--- a/src/jexer/backend/MultiBackend.java
+++ b/src/jexer/backend/MultiBackend.java
@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (C) 2017 Kevin Lamonte
+ * Copyright (C) 2019 Kevin Lamonte
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -38,6 +38,10 @@ import jexer.event.TInputEvent;
  */
 public class MultiBackend implements Backend {
 
+    // ------------------------------------------------------------------------
+    // Variables --------------------------------------------------------------
+    // ------------------------------------------------------------------------
+
     /**
      * The screen to use.
      */
@@ -48,6 +52,10 @@ public class MultiBackend implements Backend {
      */
     private List<Backend> backends = new LinkedList<Backend>();
 
+    // ------------------------------------------------------------------------
+    // Constructors -----------------------------------------------------------
+    // ------------------------------------------------------------------------
+
     /**
      * Public constructor requires one backend.  Note that this backend's
      * screen will be replaced with a MultiScreen.
@@ -56,37 +64,23 @@ public class MultiBackend implements Backend {
      */
     public MultiBackend(final Backend backend) {
         backends.add(backend);
-        multiScreen = new MultiScreen(backend.getScreen());
-    }
-
-    /**
-     * Add a backend to the list.
-     *
-     * @param backend the backend to add
-     */
-    public void addBackend(final Backend backend) {
-        backends.add(backend);
-        multiScreen.addScreen(backend.getScreen());
-    }
-
-    /**
-     * Remove a backend from the list.
-     *
-     * @param backend the backend to remove
-     */
-    public void removeBackend(final Backend backend) {
-        if (backends.size() > 1) {
-            multiScreen.removeScreen(backend.getScreen());
-            backends.remove(backend);
+        if (backend instanceof TWindowBackend) {
+            multiScreen = new MultiScreen(((TWindowBackend) backend).getOtherScreen());
+        } else {
+            multiScreen = new MultiScreen(backend.getScreen());
         }
     }
 
+    // ------------------------------------------------------------------------
+    // Backend ----------------------------------------------------------------
+    // ------------------------------------------------------------------------
+
     /**
      * Getter for sessionInfo.
      *
      * @return the SessionInfo
      */
-    public final SessionInfo getSessionInfo() {
+    public SessionInfo getSessionInfo() {
         return backends.get(0).getSessionInfo();
     }
 
@@ -95,7 +89,7 @@ public class MultiBackend implements Backend {
      *
      * @return the Screen
      */
-    public final Screen getScreen() {
+    public Screen getScreen() {
         return multiScreen;
     }
 
@@ -109,6 +103,20 @@ public class MultiBackend implements Backend {
         }
     }
 
+    /**
+     * Check if there are events in the queue.
+     *
+     * @return if true, getEvents() has something to return to the application
+     */
+    public boolean hasEvents() {
+        for (Backend backend: backends) {
+            if (backend.hasEvents()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     /**
      * Subclasses must provide an implementation to get keyboard, mouse, and
      * screen resize events.
@@ -154,4 +162,38 @@ public class MultiBackend implements Backend {
         }
     }
 
+    // ------------------------------------------------------------------------
+    // MultiBackend -----------------------------------------------------------
+    // ------------------------------------------------------------------------
+
+    /**
+     * Add a backend to the list.
+     *
+     * @param backend the backend to add
+     */
+    public void addBackend(final Backend backend) {
+        backends.add(backend);
+        if (backend instanceof TWindowBackend) {
+            multiScreen.addScreen(((TWindowBackend) backend).getOtherScreen());
+        } else {
+            multiScreen.addScreen(backend.getScreen());
+        }
+    }
+
+    /**
+     * Remove a backend from the list.
+     *
+     * @param backend the backend to remove
+     */
+    public void removeBackend(final Backend backend) {
+        if (backends.size() > 1) {
+            if (backend instanceof TWindowBackend) {
+                multiScreen.removeScreen(((TWindowBackend) backend).getOtherScreen());
+            } else {
+                multiScreen.removeScreen(backend.getScreen());
+            }
+            backends.remove(backend);
+        }
+    }
+
 }