Add captioning preferences screen

BUG: 9926077
Change-Id: Iea141d5d6fd0e4f134c36c51d89830b3c31abd09

src/com/android/settings/accessibility/PresetPreference.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2013 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.settings.accessibility;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.accessibility.CaptioningManager.CaptionStyle;
+import android.widget.TextView;
+
+import com.android.settings.R;
+
+public class PresetPreference extends ListDialogPreference {
+    public PresetPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        setDialogLayoutResource(R.layout.grid_picker_dialog);
+        setListItemLayoutResource(R.layout.preset_picker_item);
+    }
+
+    @Override
+    public boolean shouldDisableDependents() {
+        return getValue() != CaptionStyle.PRESET_CUSTOM
+                || super.shouldDisableDependents();
+    }
+
+    @Override
+    protected void onBindListItem(View view, int index) {
+        final CaptioningTextView previewText = (CaptioningTextView) view.findViewById(
+                R.id.preview);
+        final int value = getValueAt(index);
+        ToggleCaptioningPreferenceFragment.applyCaptionProperties(previewText, value);
+
+        final CharSequence title = getTitleAt(index);
+        if (title != null) {
+            final TextView summary = (TextView) view.findViewById(R.id.summary);
+            summary.setText(title);
+        }
+    }
+}