Adding information section to voicemail settings

this cl moves the TextViewPreference from dialer to third_party so it can be
shared (sorry i meant to make that a separate cl, but forgot to switch branches).
and it uses the TextViewPreference to add some informational text to the voicemail settings.

screen shot:
https://drive.google.com/open?id=0B9o_KvtLkcuIbENkeHRCSTUyOVpkM0JEZ0liMHphMnVzVHlN

mock:
https://drive.google.com/file/d/1gKt72pY-igXfphpamf8CqZV8HEmnOexj/view

Bug: 37340510
Test: manual test
PiperOrigin-RevId: 186388299
Change-Id: I2c142f1214a9424bec0bc7f12d841f0eeaef96f1

2 files changed, 165 insertions, 0 deletions

diff --git a/java/com/android/dialer/widget/TextViewPreference.java b/java/com/android/dialer/widget/TextViewPreference.java
new file mode 100644
index 000000000..2c1885c4d
--- /dev/null
+++ b/java/com/android/dialer/widget/TextViewPreference.java
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2018 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.dialer.widget;
+
+import android.content.Context;
+import android.preference.Preference;
+import android.text.method.LinkMovementMethod;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.TextView;
+
+/**
+ * Provides a {@link TextView} inside a preference. Useful for displaying static text which may
+ * contain hyperlinks.
+ */
+public class TextViewPreference extends Preference {
+
+  /**
+   * The resource ID of the text to be populated in the {@link TextView} when a resource ID is used.
+   */
+  private int textResourceId = 0;
+
+  /** The text to be populated in the {@link TextView} when a {@link CharSequence} is used. */
+  private CharSequence text;
+
+  /** The {@link TextView} containing the text. */
+  private TextView textView;
+
+  /**
+   * Instantiates the {@link TextViewPreference} instance.
+   *
+   * @param context The Context this is associated with, through which it can access the current
+   *     theme, resources, etc.
+   * @param attrs The attributes of the XML tag that is inflating the preference.
+   * @param defStyleAttr An attribute in the current theme that contains a reference to a style
+   *     resource that supplies default values for the view. Can be 0 to not look for defaults.
+   * @param defStyleRes A resource identifier of a style resource that supplies default values for
+   *     the view, used only if defStyleAttr is 0 or can not be found in the theme. Can be 0 to not
+   *     look for defaults.
+   */
+  public TextViewPreference(
+      Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+    super(context, attrs, defStyleAttr, defStyleRes);
+
+    setLayoutResource(R.layout.text_view_preference);
+  }
+
+  /**
+   * Instantiates the {@link TextViewPreference} instance.
+   *
+   * @param context The Context this is associated with, through which it can access the current
+   *     theme, resources, etc.
+   * @param attrs The attributes of the XML tag that is inflating the preference.
+   * @param defStyleAttr An attribute in the current theme that contains a reference to a style
+   *     resource that supplies default values for the view. Can be 0 to not look for defaults.
+   */
+  public TextViewPreference(Context context, AttributeSet attrs, int defStyleAttr) {
+    this(context, attrs, defStyleAttr, 0);
+  }
+
+  /**
+   * Instantiates the {@link TextViewPreference} instance.
+   *
+   * @param context The Context this is associated with, through which it can access the current
+   *     theme, resources, etc.
+   * @param attrs The attributes of the XML tag that is inflating the preference.
+   */
+  public TextViewPreference(Context context, AttributeSet attrs) {
+    this(context, attrs, android.R.attr.preferenceStyle, 0);
+  }
+
+  /**
+   * Instantiates the {@link TextViewPreference} instance.
+   *
+   * @param context The Context this is associated with, through which it can access the current
+   *     theme, resources, etc.
+   */
+  public TextViewPreference(Context context) {
+    super(context, null);
+
+    setLayoutResource(R.layout.text_view_preference);
+  }
+
+  /**
+   * Handles binding the preference.
+   *
+   * @param view The view.
+   */
+  @Override
+  protected void onBindView(View view) {
+    super.onBindView(view);
+    textView = (TextView) view.findViewById(R.id.text);
+    if (textResourceId != 0) {
+      setTitle(textResourceId);
+    } else if (text != null) {
+      setTitle(text);
+    }
+  }
+
+  /**
+   * Sets the preference title from a {@link CharSequence}.
+   *
+   * @param text The text.
+   */
+  @Override
+  public void setTitle(CharSequence text) {
+    textResourceId = 0;
+    this.text = text;
+    if (textView == null) {
+      return;
+    }
+
+    textView.setMovementMethod(LinkMovementMethod.getInstance());
+    textView.setText(text);
+  }
+
+  /**
+   * Sets the preference title from a resource id.
+   *
+   * @param textResId The string resource Id.
+   */
+  @Override
+  public void setTitle(int textResId) {
+    textResourceId = textResId;
+    setTitle(getContext().getString(textResId));
+  }
+}
diff --git a/java/com/android/dialer/widget/res/layout/text_view_preference.xml b/java/com/android/dialer/widget/res/layout/text_view_preference.xml
new file mode 100644
index 000000000..39b550657
--- /dev/null
+++ b/java/com/android/dialer/widget/res/layout/text_view_preference.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2018 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
+  -->
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+  android:id="@+id/text"
+  android:layout_width="match_parent"
+  android:layout_height="wrap_content"
+  android:padding="16dp"
+  android:fontFamily="sans-serif"
+  android:linksClickable="true"
+  android:singleLine="false"/>