1 files changed, 82 insertions, 0 deletions
diff --git a/java/src/org/kelar/inputmethod/latin/settings/TwoStatePreferenceHelper.java b/java/src/org/kelar/inputmethod/latin/settings/TwoStatePreferenceHelper.java
new file mode 100644
index 000000000..7657a4022
--- /dev/null
+++ b/java/src/org/kelar/inputmethod/latin/settings/TwoStatePreferenceHelper.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.kelar.inputmethod.latin.settings;
+
+import android.os.Build;
+import android.preference.CheckBoxPreference;
+import android.preference.Preference;
+import android.preference.PreferenceGroup;
+import android.preference.SwitchPreference;
+
+import java.util.ArrayList;
+
+public class TwoStatePreferenceHelper {
+    private static final String EMPTY_TEXT = "";
+
+    private TwoStatePreferenceHelper() {
+        // This utility class is not publicly instantiable.
+    }
+
+    public static void replaceCheckBoxPreferencesBySwitchPreferences(final PreferenceGroup group) {
+        // The keyboard settings keeps using a CheckBoxPreference on KitKat or previous.
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT) {
+            return;
+        }
+        // The keyboard settings starts using a SwitchPreference without switch on/off text on
+        // API versions newer than KitKat.
+        replaceAllCheckBoxPreferencesBySwitchPreferences(group);
+    }
+
+    private static void replaceAllCheckBoxPreferencesBySwitchPreferences(
+            final PreferenceGroup group) {
+        final ArrayList<Preference> preferences = new ArrayList<>();
+        final int count = group.getPreferenceCount();
+        for (int index = 0; index < count; index++) {
+            preferences.add(group.getPreference(index));
+        }
+        group.removeAll();
+        for (int index = 0; index < count; index++) {
+            final Preference preference = preferences.get(index);
+            if (preference instanceof CheckBoxPreference) {
+                addSwitchPreferenceBasedOnCheckBoxPreference((CheckBoxPreference)preference, group);
+            } else {
+                group.addPreference(preference);
+                if (preference instanceof PreferenceGroup) {
+                    replaceAllCheckBoxPreferencesBySwitchPreferences((PreferenceGroup)preference);
+                }
+            }
+        }
+    }
+
+    static void addSwitchPreferenceBasedOnCheckBoxPreference(final CheckBoxPreference checkBox,
+            final PreferenceGroup group) {
+        final SwitchPreference switchPref = new SwitchPreference(checkBox.getContext());
+        switchPref.setTitle(checkBox.getTitle());
+        switchPref.setKey(checkBox.getKey());
+        switchPref.setOrder(checkBox.getOrder());
+        switchPref.setPersistent(checkBox.isPersistent());
+        switchPref.setEnabled(checkBox.isEnabled());
+        switchPref.setChecked(checkBox.isChecked());
+        switchPref.setSummary(checkBox.getSummary());
+        switchPref.setSummaryOn(checkBox.getSummaryOn());
+        switchPref.setSummaryOff(checkBox.getSummaryOff());
+        switchPref.setSwitchTextOn(EMPTY_TEXT);
+        switchPref.setSwitchTextOff(EMPTY_TEXT);
+        group.addPreference(switchPref);
+        switchPref.setDependency(checkBox.getDependency());
+    }
+}