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, 9 insertions, 10 deletions

diff --git a/srcs/juloo.keyboard2/Config.java b/srcs/juloo.keyboard2/Config.java
index b2c23a5..6c1dced 100644
--- a/srcs/juloo.keyboard2/Config.java
+++ b/srcs/juloo.keyboard2/Config.java
@@ -25,7 +25,7 @@ final class Config
 
   // From preferences
   public int layout; // Or '-1' for the system defaults
-  public int programming_layout; // Or '-1' for none
+  public int second_layout; // Or '-1' for none
   public boolean show_numpad = false;
   public float swipe_dist_px;
   public boolean vibrateEnabled;
@@ -46,7 +46,7 @@ final class Config
 
   // Dynamically set
   public boolean shouldOfferSwitchingToNextInputMethod;
-  public boolean shouldOfferSwitchingToProgramming;
+  public boolean shouldOfferSwitchingToSecond;
   public String actionLabel; // Might be 'null'
   public int actionId; // Meaningful only when 'actionLabel' isn't 'null'
   public boolean swapEnterActionKey; // Swap the "enter" and "action" keys
@@ -65,7 +65,7 @@ final class Config
     sublabelTextSize = 0.22f;
     // default values
     layout = -1;
-    programming_layout = -1;
+    second_layout = -1;
     vibrateEnabled = true;
     longPressTimeout = 600;
     longPressInterval = 65;
@@ -81,7 +81,7 @@ final class Config
     refresh(res);
     // initialized later
     shouldOfferSwitchingToNextInputMethod = false;
-    shouldOfferSwitchingToProgramming = false;
+    shouldOfferSwitchingToSecond = false;
     actionLabel = null;
     actionId = 0;
     swapEnterActionKey = false;
@@ -115,10 +115,8 @@ final class Config
     {
       keyboardHeightPercent = _prefs.getInt("keyboard_height", 35);
     }
-    String layout_s = _prefs.getString("layout", "system");
-    layout = layout_s.equals("system") ? -1 : layoutId_of_string(layout_s);
-    String prog_layout_s = _prefs.getString("programming_layout", "none");
-    programming_layout = prog_layout_s.equals("none") ? -1 : layoutId_of_string(prog_layout_s);
+    layout = layoutId_of_string(_prefs.getString("layout", "none"));
+    second_layout = layoutId_of_string(_prefs.getString("second_layout", "none"));
     // The swipe distance is defined relatively to the "exact physical pixels
     // per inch of the screen", which isn't affected by the scaling settings.
     // Take the mean of both dimensions as an approximation of the diagonal.
@@ -185,8 +183,8 @@ final class Config
               case ACTION:
                 return (swapEnterActionKey && action_key != null) ?
                   KeyValue.getKeyByName("enter") : action_key;
-              case SWITCH_PROGRAMMING:
-                return shouldOfferSwitchingToProgramming ? key : null;
+              case SWITCH_SECOND:
+                return shouldOfferSwitchingToSecond ? key : null;
             }
             break;
           case Keyevent:
@@ -249,6 +247,7 @@ final class Config
   {
     switch (name)
     {
+      case "system": case "none": return -1;
       case "azerty": return R.xml.azerty;
       case "bangla": return R.xml.bangla;
       case "bgph1": return R.xml.local_bgph1;