LayoutsPreference: Remove cross button for custom layouts

Remove the cross button on the right of custom layouts to reduce
accidental removal.
A remove button is added in the dialog for modifying the layout.

res/values-cs/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">Vlastní rozvržení</string>
   <string name="pref_layouts_add">Přidat alternativní rozložení</string>
   <string name="pref_layouts_item">Rozložení %1$d: %2$s</string>
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <string name="pref_custom_layout_title">Vlastní rozvržení</string>
   <string name="pref_show_numpad_title">Zobrazit NumPad</string>
   <string name="pref_show_numpad_never">Nikdy</string>

res/values-de/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">Eigenes Layout</string>
   <string name="pref_layouts_add">Alternatives Layout hinzufügen</string>
   <string name="pref_layouts_item">Layout %1$d: %2$s</string>
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <string name="pref_custom_layout_title">Eigenes Layout</string>
   <string name="pref_show_numpad_title">Ziffernblock anzeigen</string>
   <string name="pref_show_numpad_never">Nie</string>

res/values-es/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">Formato personalizado</string>
   <!-- <string name="pref_layouts_add">Add an alternate layout</string> -->
   <!-- <string name="pref_layouts_item">Layout %1$d: %2$s</string> -->
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <string name="pref_custom_layout_title">Formato personalizado</string>
   <string name="pref_show_numpad_title">Mostrar pad numérico</string>
   <string name="pref_show_numpad_never">Nunca</string>

res/values-fa/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">طرح صفارشی</string>
   <!-- <string name="pref_layouts_add">Add an alternate layout</string> -->
   <!-- <string name="pref_layouts_item">Layout %1$d: %2$s</string> -->
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <string name="pref_custom_layout_title">طرح شخصی</string>
   <string name="pref_show_numpad_title">نمایش پد شماره‌ها</string>
   <string name="pref_show_numpad_never">هرگز</string>

res/values-fr/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">Disposition personnalisée</string>
   <string name="pref_layouts_add">Ajouter un clavier alternatif</string>
   <string name="pref_layouts_item">Disposition %1$d: %2$s</string>
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <string name="pref_custom_layout_title">Disposition personnalisée</string>
   <string name="pref_show_numpad_title">Afficher le pavé numérique</string>
   <string name="pref_show_numpad_never">Jamais</string>

res/values-it/strings.xml

@@ -14,6 +14,7 @@
   <!-- <string name="pref_layout_e_custom">Custom layout</string> -->
   <!-- <string name="pref_layouts_add">Add an alternate layout</string> -->
   <!-- <string name="pref_layouts_item">Layout %1$d: %2$s</string> -->
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <!-- <string name="pref_custom_layout_title">Custom layout</string> -->
   <!-- <string name="pref_show_numpad_title">Show NumPad</string> -->
   <!-- <string name="pref_show_numpad_never">Never</string> -->

res/values-ko/strings.xml

@@ -14,6 +14,7 @@
   <!-- <string name="pref_layout_e_custom">Custom layout</string> -->
   <!-- <string name="pref_layouts_add">Add an alternate layout</string> -->
   <!-- <string name="pref_layouts_item">Layout %1$d: %2$s</string> -->
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <!-- <string name="pref_custom_layout_title">Custom layout</string> -->
   <!-- <string name="pref_show_numpad_title">Show NumPad</string> -->
   <!-- <string name="pref_show_numpad_never">Never</string> -->

res/values-lv/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">Pielāgots izkārtojums</string>
   <string name="pref_layouts_add">Pievienot aizstājējizkārtojumu</string>
   <string name="pref_layouts_item">Izkārtojums %1$d: %2$s</string>
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <string name="pref_custom_layout_title">Pielāgots izkārtojums</string>
   <string name="pref_show_numpad_title">Rādīt ciparnīcu</string>
   <string name="pref_show_numpad_never">Nekad</string>

res/values-pl/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">Własny układ</string>
   <string name="pref_layouts_add">Dodaj dodatkowy układ</string>
   <string name="pref_layouts_item">Układ %1$d: %2$s</string>
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <string name="pref_custom_layout_title">Własny układ</string>
   <string name="pref_show_numpad_title">Pokaż klawiaturę numeryczną</string>
   <string name="pref_show_numpad_never">Nigdy</string>

res/values-pt/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">Layout personalizado</string>
   <string name="pref_layouts_add">Adicione um layout alternativo</string>
   <string name="pref_layouts_item">Layout %1$d: %2$s</string>
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <string name="pref_custom_layout_title">Layout personalizado</string>
   <string name="pref_show_numpad_title">Mostrar Teclado Numérico</string>
   <string name="pref_show_numpad_never">Nunca</string>

res/values-ro/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">Aranjament personalizat</string>
   <!-- <string name="pref_layouts_add">Add an alternate layout</string> -->
   <!-- <string name="pref_layouts_item">Layout %1$d: %2$s</string> -->
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <string name="pref_custom_layout_title">Aranjament personalizat</string>
   <string name="pref_show_numpad_title">Arată NumPad</string>
   <string name="pref_show_numpad_never">Niciodată</string>

res/values-ru/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">Пользовательская раскладка</string>
   <!-- <string name="pref_layouts_add">Add an alternate layout</string> -->
   <!-- <string name="pref_layouts_item">Layout %1$d: %2$s</string> -->
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <string name="pref_custom_layout_title">Пользовательская раскладка</string>
   <string name="pref_show_numpad_title">Показывать NumPad</string>
   <string name="pref_show_numpad_never">Никогда</string>

res/values-tr/strings.xml

@@ -14,6 +14,7 @@
   <!-- <string name="pref_layout_e_custom">Custom layout</string> -->
   <!-- <string name="pref_layouts_add">Add an alternate layout</string> -->
   <!-- <string name="pref_layouts_item">Layout %1$d: %2$s</string> -->
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <!-- <string name="pref_custom_layout_title">Custom layout</string> -->
   <!-- <string name="pref_show_numpad_title">Show NumPad</string> -->
   <!-- <string name="pref_show_numpad_never">Never</string> -->

res/values-vi/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">Tùy chỉnh bố cục</string>
   <!-- <string name="pref_layouts_add">Add an alternate layout</string> -->
   <!-- <string name="pref_layouts_item">Layout %1$d: %2$s</string> -->
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <string name="pref_custom_layout_title">Tùy chỉnh bố cục</string>
   <string name="pref_show_numpad_title">Hiện NumPad</string>
   <string name="pref_show_numpad_never">Không bao giờ</string>

res/values-zh-rCN/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">自定义布局</string>
   <!-- <string name="pref_layouts_add">Add an alternate layout</string> -->
   <!-- <string name="pref_layouts_item">Layout %1$d: %2$s</string> -->
+  <!-- <string name="pref_layouts_remove_custom">Remove layout</string> -->
   <string name="pref_custom_layout_title">自定义布局</string>
   <string name="pref_show_numpad_title">显示数字小键盘</string>
   <string name="pref_show_numpad_never">从不</string>

res/values/strings.xml

@@ -14,6 +14,7 @@
   <string name="pref_layout_e_custom">Custom layout</string>
   <string name="pref_layouts_add">Add an alternate layout</string>
   <string name="pref_layouts_item">Layout %1$d: %2$s</string>
+  <string name="pref_layouts_remove_custom">Remove layout</string>
   <string name="pref_custom_layout_title">Custom layout</string>
   <string name="pref_show_numpad_title">Show NumPad</string>
   <string name="pref_show_numpad_never">Never</string>

srcs/juloo.keyboard2/LayoutsPreference.java

@@ -122,9 +122,9 @@ public class LayoutsPreference extends ListGroupPreference<LayoutsPreference.Lay
   }
 
   @Override
-  boolean should_allow_remove_item()
+  boolean should_allow_remove_item(Layout value)
   {
-    return (_values.size() > 1);
+    return (_values.size() > 1 && !(value instanceof CustomLayout));
   }
 
   @Override
@@ -163,7 +163,7 @@ public class LayoutsPreference extends ListGroupPreference<LayoutsPreference.Lay
   {
     final EditText input = new EditText(getContext());
     input.setText(initial_text);
-    new AlertDialog.Builder(getContext())
+    AlertDialog.Builder dialog = new AlertDialog.Builder(getContext())
       .setView(input)
       .setTitle(R.string.pref_custom_layout_title)
       .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener(){
@@ -172,8 +172,16 @@ public class LayoutsPreference extends ListGroupPreference<LayoutsPreference.Lay
           callback.select(new CustomLayout(input.getText().toString()));
         }
       })
-      .setNegativeButton(android.R.string.cancel, null)
+      .setNegativeButton(android.R.string.cancel, null);
-      .show();
+    // Might be true when modifying an existing layout
+    if (callback.allow_remove() && _values.size() > 1)
+      dialog.setNeutralButton(R.string.pref_layouts_remove_custom, new DialogInterface.OnClickListener(){
+        public void onClick(DialogInterface _dialog, int _which)
+        {
+          callback.select(null);
+        }
+      });
+    dialog.show();
   }
 
   /** Called when modifying a layout. Custom layouts behave differently. */

srcs/juloo.keyboard2/ListGroupPreference.java

@@ -48,7 +48,7 @@ public abstract class ListGroupPreference<E> extends PreferenceGroup
   /** Called every time the list changes and allows to disable the "Remove"
       buttons on every items. Might be used to enforce a minimum number of
       items. */
-  boolean should_allow_remove_item()
+  boolean should_allow_remove_item(E _value)
   {
     return true;
   }
@@ -170,11 +170,10 @@ public abstract class ListGroupPreference<E> extends PreferenceGroup
     if (!_attached)
       return;
     removeAll();
-    boolean allow_remove_item = should_allow_remove_item();
     int i = 0;
     for (E v : _values)
     {
-      addPreference(this.new Item(getContext(), i, v, allow_remove_item));
+      addPreference(this.new Item(getContext(), i, v));
       i++;
     }
     _add_button = on_attach_add_button(_add_button);
@@ -187,14 +186,14 @@ public abstract class ListGroupPreference<E> extends PreferenceGroup
     final E _value;
     final int _index;
 
-    public Item(Context ctx, int index, E value, boolean allow_remove)
+    public Item(Context ctx, int index, E value)
     {
       super(ctx);
       _value = value;
       _index = index;
       setPersistent(false);
       setTitle(label_of_value(value, index));
-      if (allow_remove)
+      if (should_allow_remove_item(value))
         setWidgetLayoutResource(R.layout.pref_listgroup_item_widget);
     }
 
@@ -218,9 +217,14 @@ public abstract class ListGroupPreference<E> extends PreferenceGroup
           select(new SelectionCallback<E>() {
             public void select(E value)
             {
-              change_item(_index, value);
+              if (value == null)
+                remove_item(_index);
+              else
+                change_item(_index, value);
             }
-          });
+
+            public boolean allow_remove() { return true; }
+          }, _value);
         }
       });
       return v;
@@ -244,6 +248,8 @@ public abstract class ListGroupPreference<E> extends PreferenceGroup
         {
           add_item(value);
         }
+
+        public boolean allow_remove() { return false; }
       });
     }
   }
@@ -251,6 +257,10 @@ public abstract class ListGroupPreference<E> extends PreferenceGroup
   public interface SelectionCallback<E>
   {
     public void select(E value);
+
+    /** If this method returns [true], [null] might be passed to [select] to
+        remove the item. */
+    public boolean allow_remove();
   }
 
   /** Methods for serializing and deserializing abstract items.