1 files changed, 68 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/keyboard/internal/LanguageOnSpacebarHelper.java b/java/src/com/android/inputmethod/keyboard/internal/LanguageOnSpacebarHelper.java
new file mode 100644
index 000000000..6400a2440
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+++ b/java/src/com/android/inputmethod/keyboard/internal/LanguageOnSpacebarHelper.java
@@ -0,0 +1,68 @@
+/*
+ * 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 com.android.inputmethod.keyboard.internal;
+
+import android.view.inputmethod.InputMethodSubtype;
+
+import com.android.inputmethod.latin.utils.SubtypeLocaleUtils;
+
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * This class determines that the language name on the spacebar should be displayed in what format.
+ */
+public final class LanguageOnSpacebarHelper {
+    public static final int FORMAT_TYPE_NONE = 0;
+    public static final int FORMAT_TYPE_LANGUAGE_ONLY = 1;
+    public static final int FORMAT_TYPE_FULL_LOCALE = 2;
+
+    private List<InputMethodSubtype> mEnabledSubtypes = Collections.emptyList();
+    private boolean mIsSystemLanguageSameAsInputLanguage;
+
+    public int getLanguageOnSpacebarFormatType(final InputMethodSubtype subtype) {
+        if (SubtypeLocaleUtils.isNoLanguage(subtype)) {
+            return FORMAT_TYPE_FULL_LOCALE;
+        }
+        // Only this subtype is enabled and equals to the system locale.
+        if (mEnabledSubtypes.size() < 2 && mIsSystemLanguageSameAsInputLanguage) {
+            return FORMAT_TYPE_NONE;
+        }
+        final String keyboardLanguage = SubtypeLocaleUtils.getSubtypeLocale(subtype).getLanguage();
+        final String keyboardLayout = SubtypeLocaleUtils.getKeyboardLayoutSetName(subtype);
+        int sameLanguageAndLayoutCount = 0;
+        for (final InputMethodSubtype ims : mEnabledSubtypes) {
+            final String language = SubtypeLocaleUtils.getSubtypeLocale(ims).getLanguage();
+            if (keyboardLanguage.equals(language) && keyboardLayout.equals(
+                    SubtypeLocaleUtils.getKeyboardLayoutSetName(ims))) {
+                sameLanguageAndLayoutCount++;
+            }
+        }
+        // Display full locale name only when there are multiple subtypes that have the same
+        // locale and keyboard layout. Otherwise displaying language name is enough.
+        return sameLanguageAndLayoutCount > 1 ? FORMAT_TYPE_FULL_LOCALE
+                : FORMAT_TYPE_LANGUAGE_ONLY;
+    }
+
+    public void updateEnabledSubtypes(final List<InputMethodSubtype> enabledSubtypes) {
+        mEnabledSubtypes = enabledSubtypes;
+    }
+
+    public void updateIsSystemLanguageSameAsInputLanguage(final boolean isSame) {
+        mIsSystemLanguageSameAsInputLanguage = isSame;
+    }
+}