Allow switching quickly between two layouts

A new option allow to choose a secondary layout, the switching key is
placed on the top edge of the space bar.

The "Programming layout" option was basically doing that but it was
possible to choose from a few layouts only. It is improved and renamed.

The 'LayoutListPreference' allows setting the string for the first entry
but otherwise share the rest of the array.

Add nice icons from materialdesignicons.

1 files changed, 4 insertions, 3 deletions

diff --git a/srcs/juloo.keyboard2/KeyEventHandler.java b/srcs/juloo.keyboard2/KeyEventHandler.java
index 4623dec..5d23903 100644
--- a/srcs/juloo.keyboard2/KeyEventHandler.java
+++ b/srcs/juloo.keyboard2/KeyEventHandler.java
@@ -27,13 +27,14 @@ class KeyEventHandler implements Config.IKeyEventHandler
         switch (key.getEvent())
         {
           case CONFIG: _recv.showKeyboardConfig(); break;
-          case SWITCH_TEXT: _recv.switchMain(); break;
+          case SWITCH_TEXT:
+          case SWITCH_SECOND_BACK: _recv.switchMain(); break;
           case SWITCH_NUMERIC: _recv.switchNumeric(); break;
           case SWITCH_EMOJI: _recv.setPane_emoji(); break;
           case SWITCH_BACK_EMOJI: _recv.setPane_normal(); break;
           case CHANGE_METHOD: _recv.switchToNextInputMethod(); break;
           case ACTION: _recv.performAction(); break;
-          case SWITCH_PROGRAMMING: _recv.switchProgramming(); break;
+          case SWITCH_SECOND: _recv.switchSecond(); break;
           case SWITCH_GREEKMATH: _recv.switchGreekmath(); break;
           case CAPS_LOCK: _recv.enableCapsLock(); break;
         }
@@ -107,7 +108,7 @@ class KeyEventHandler implements Config.IKeyEventHandler
 
     public void switchMain();
     public void switchNumeric();
-    public void switchProgramming();
+    public void switchSecond();
     public void switchGreekmath();
 
     public void sendKeyEvent(int eventAction, int eventCode, int meta);