Revamp of the accessibility settings.

1. Reimplemented accessibility settings accrding to UX design.

NOTE: The strings are not final, rather reasonable placeholders
   to avoid blocking on them. Will submit another CL with string
   updates and any necessary polishes.

bug:5065409

Change-Id: I3ba229a624298dbf238bc8562b42616b386f8c34

src/com/android/settings/SettingsCheckBoxPreference.java

@@ -1,92 +0,0 @@
-/*
- * Copyright (C) 2011 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;
-
-import android.content.Context;
-import android.content.Intent;
-import android.preference.CheckBoxPreference;
-import android.util.TypedValue;
-import android.view.View;
-import android.view.View.OnClickListener;
-import android.widget.CheckBox;
-import android.widget.ImageView;
-
-/**
- * CheckBox preference that optionally shows an icon for launching a settings
- * {@link android.app.Activity}. The settings activity, if intent for launching
- * it was provided, can be stared only if the CheckBox in is checked.
- */
-public class SettingsCheckBoxPreference extends CheckBoxPreference {
-
-    // Integer.MIN_VALUE means not initalized
-    private static int sDimAlpha = Integer.MIN_VALUE;
-
-    private final Intent mSettingsIntent;
-
-    /**
-     * Creates a new instance. The constructor is checking whether the
-     * settings intent is resolved to an activity and acts accordingly.
-     *
-     * @param context Context for accessing resources.
-     * @param intent Intent to use as settings for the item represented by
-     *        this preference. Pass <code>null</code> if there is no associated 
-     *        settings activity.
-     */
-    public SettingsCheckBoxPreference(Context context, Intent intent) {
-        super(context);
-
-        if (sDimAlpha == Integer.MIN_VALUE) {
-            TypedValue outValue = new TypedValue();
-            context.getTheme().resolveAttribute(android.R.attr.disabledAlpha, outValue, true);
-            sDimAlpha = (int) (outValue.getFloat() * 255);
-        }
-
-        if (intent != null
-                && !context.getPackageManager().queryIntentActivities(intent, 0).isEmpty()) {
-            mSettingsIntent = intent;
-        } else {
-            mSettingsIntent = null;
-        }
-
-        setWidgetLayoutResource(R.layout.preference_settings_checkbox_widget);
-    }
-
-    @Override
-    protected void onBindView(View view) {
-        super.onBindView(view);
-        ImageView settingsButton = (ImageView) view.findViewById(R.id.settings_button);
-        if (mSettingsIntent != null) {
-            CheckBox checkbox = (CheckBox) view.findViewById(com.android.internal.R.id.checkbox);
-            if (checkbox.isChecked()) {
-                settingsButton.setOnClickListener(new OnClickListener() {
-                    public void onClick(View view) {
-                        getContext().startActivity(mSettingsIntent);
-                    }
-                });
-            }
-            settingsButton.setVisibility(View.VISIBLE);
-            if (checkbox.isChecked() && isEnabled()) {
-                settingsButton.setAlpha(255);
-            } else {
-                settingsButton.setAlpha(sDimAlpha);
-            }
-        } else {
-            settingsButton.setVisibility(View.GONE);
-            view.findViewById(R.id.divider).setVisibility(View.GONE);
-        }
-    }
-}