diff --git a/packages/SettingsLib/src/com/android/settingslib/accessibility/LinkAccessibilityHelper.java b/packages/SettingsLib/src/com/android/settingslib/accessibility/LinkAccessibilityHelper.java
new file mode 100644
index 0000000000000..74b0c6b9ece1b
--- /dev/null
+++ b/packages/SettingsLib/src/com/android/settingslib/accessibility/LinkAccessibilityHelper.java
@@ -0,0 +1,235 @@
+/*
+ * Copyright (C) 2017 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.settingslib.accessibility;
+
+import android.graphics.Rect;
+import android.os.Bundle;
+import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat;
+import android.support.v4.widget.ExploreByTouchHelper;
+import android.text.Layout;
+import android.text.Spanned;
+import android.text.style.ClickableSpan;
+import android.util.Log;
+import android.view.accessibility.AccessibilityEvent;
+import android.widget.TextView;
+
+import java.util.List;
+
+/**
+ * COPIED FROM SETUP WIZARD An accessibility delegate that allows {@link
+ * android.text.style.ClickableSpan} to be focused and clicked by accessibility services.
+ *
+ *
Sample usage:
+ *
+ *
+ * LinkAccessibilityHelper mAccessibilityHelper;
+ *
+ * private void init() {
+ * mAccessibilityHelper = new LinkAccessibilityHelper(myTextView);
+ * ViewCompat.setAccessibilityDelegate(myTextView, mLinkHelper);
+ * }
+ *
+ * {@literal @}Override
+ * protected boolean dispatchHoverEvent({@literal @}NonNull MotionEvent event) {
+ * if (mAccessibilityHelper != null && mAccessibilityHelper.dispatchHoverEvent(event)) {
+ * return true;
+ * }
+ * return super.dispatchHoverEvent(event);
+ * }
+ *
+ *
+ * @see android.support.v4.widget.ExploreByTouchHelper
+ */
+public class LinkAccessibilityHelper extends ExploreByTouchHelper {
+
+ private static final String TAG = "LinkAccessibilityHelper";
+
+ private final TextView mView;
+ private final Rect mTempRect = new Rect();
+
+ public LinkAccessibilityHelper(TextView view) {
+ super(view);
+ mView = view;
+ }
+
+ @Override
+ protected int getVirtualViewAt(float x, float y) {
+ final CharSequence text = mView.getText();
+ if (text instanceof Spanned) {
+ final Spanned spannedText = (Spanned) text;
+ final int offset = getOffsetForPosition(mView, x, y);
+ ClickableSpan[] linkSpans = spannedText.getSpans(offset, offset, ClickableSpan.class);
+ if (linkSpans.length == 1) {
+ ClickableSpan linkSpan = linkSpans[0];
+ return spannedText.getSpanStart(linkSpan);
+ }
+ }
+ return INVALID_ID;
+ }
+
+ @Override
+ protected void getVisibleVirtualViews(List virtualViewIds) {
+ final CharSequence text = mView.getText();
+ if (text instanceof Spanned) {
+ final Spanned spannedText = (Spanned) text;
+ ClickableSpan[] linkSpans =
+ spannedText.getSpans(0, spannedText.length(), ClickableSpan.class);
+ for (ClickableSpan span : linkSpans) {
+ virtualViewIds.add(spannedText.getSpanStart(span));
+ }
+ }
+ }
+
+ @Override
+ protected void onPopulateEventForVirtualView(int virtualViewId, AccessibilityEvent event) {
+ final ClickableSpan span = getSpanForOffset(virtualViewId);
+ if (span != null) {
+ event.setContentDescription(getTextForSpan(span));
+ } else {
+ Log.e(TAG, "LinkSpan is null for offset: " + virtualViewId);
+ event.setContentDescription(mView.getText());
+ }
+ }
+
+ @Override
+ protected void onPopulateNodeForVirtualView(
+ int virtualViewId, AccessibilityNodeInfoCompat info) {
+ final ClickableSpan span = getSpanForOffset(virtualViewId);
+ if (span != null) {
+ info.setContentDescription(getTextForSpan(span));
+ } else {
+ Log.e(TAG, "LinkSpan is null for offset: " + virtualViewId);
+ info.setContentDescription(mView.getText());
+ }
+ info.setFocusable(true);
+ info.setClickable(true);
+ getBoundsForSpan(span, mTempRect);
+ if (mTempRect.isEmpty()) {
+ Log.e(TAG, "LinkSpan bounds is empty for: " + virtualViewId);
+ mTempRect.set(0, 0, 1, 1);
+ }
+ info.setBoundsInParent(mTempRect);
+ info.addAction(AccessibilityNodeInfoCompat.ACTION_CLICK);
+ }
+
+ @Override
+ protected boolean onPerformActionForVirtualView(
+ int virtualViewId, int action, Bundle arguments) {
+ if (action == AccessibilityNodeInfoCompat.ACTION_CLICK) {
+ ClickableSpan span = getSpanForOffset(virtualViewId);
+ if (span != null) {
+ span.onClick(mView);
+ return true;
+ } else {
+ Log.e(TAG, "LinkSpan is null for offset: " + virtualViewId);
+ }
+ }
+ return false;
+ }
+
+ private ClickableSpan getSpanForOffset(int offset) {
+ CharSequence text = mView.getText();
+ if (text instanceof Spanned) {
+ Spanned spannedText = (Spanned) text;
+ ClickableSpan[] spans = spannedText.getSpans(offset, offset, ClickableSpan.class);
+ if (spans.length == 1) {
+ return spans[0];
+ }
+ }
+ return null;
+ }
+
+ private CharSequence getTextForSpan(ClickableSpan span) {
+ CharSequence text = mView.getText();
+ if (text instanceof Spanned) {
+ Spanned spannedText = (Spanned) text;
+ return spannedText.subSequence(
+ spannedText.getSpanStart(span), spannedText.getSpanEnd(span));
+ }
+ return text;
+ }
+
+ // Find the bounds of a span. If it spans multiple lines, it will only return the bounds for the
+ // section on the first line.
+ private Rect getBoundsForSpan(ClickableSpan span, Rect outRect) {
+ CharSequence text = mView.getText();
+ outRect.setEmpty();
+ if (text instanceof Spanned) {
+ final Layout layout = mView.getLayout();
+ if (layout != null) {
+ Spanned spannedText = (Spanned) text;
+ final int spanStart = spannedText.getSpanStart(span);
+ final int spanEnd = spannedText.getSpanEnd(span);
+ final float xStart = layout.getPrimaryHorizontal(spanStart);
+ final float xEnd = layout.getPrimaryHorizontal(spanEnd);
+ final int lineStart = layout.getLineForOffset(spanStart);
+ final int lineEnd = layout.getLineForOffset(spanEnd);
+ layout.getLineBounds(lineStart, outRect);
+ if (lineEnd == lineStart) {
+ // If the span is on a single line, adjust both the left and right bounds
+ // so outrect is exactly bounding the span.
+ outRect.left = (int) Math.min(xStart, xEnd);
+ outRect.right = (int) Math.max(xStart, xEnd);
+ } else {
+ // If the span wraps across multiple lines, only use the first line (as returned
+ // by layout.getLineBounds above), and adjust the "start" of outrect to where
+ // the span starts, leaving the "end" of outrect at the end of the line.
+ // ("start" being left for LTR, and right for RTL)
+ if (layout.getParagraphDirection(lineStart) == Layout.DIR_RIGHT_TO_LEFT) {
+ outRect.right = (int) xStart;
+ } else {
+ outRect.left = (int) xStart;
+ }
+ }
+
+ // Offset for padding
+ outRect.offset(mView.getTotalPaddingLeft(), mView.getTotalPaddingTop());
+ }
+ }
+ return outRect;
+ }
+
+ // Compat implementation of TextView#getOffsetForPosition().
+
+ private static int getOffsetForPosition(TextView view, float x, float y) {
+ if (view.getLayout() == null) return -1;
+ final int line = getLineAtCoordinate(view, y);
+ return getOffsetAtCoordinate(view, line, x);
+ }
+
+ private static float convertToLocalHorizontalCoordinate(TextView view, float x) {
+ x -= view.getTotalPaddingLeft();
+ // Clamp the position to inside of the view.
+ x = Math.max(0.0f, x);
+ x = Math.min(view.getWidth() - view.getTotalPaddingRight() - 1, x);
+ x += view.getScrollX();
+ return x;
+ }
+
+ private static int getLineAtCoordinate(TextView view, float y) {
+ y -= view.getTotalPaddingTop();
+ // Clamp the position to inside of the view.
+ y = Math.max(0.0f, y);
+ y = Math.min(view.getHeight() - view.getTotalPaddingBottom() - 1, y);
+ y += view.getScrollY();
+ return view.getLayout().getLineForVertical((int) y);
+ }
+
+ private static int getOffsetAtCoordinate(TextView view, int line, float x) {
+ x = convertToLocalHorizontalCoordinate(view, x);
+ return view.getLayout().getOffsetForHorizontal(line, x);
+ }
+}
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diff --git a/packages/SettingsLib/src/com/android/settingslib/widget/LinkTextView.java b/packages/SettingsLib/src/com/android/settingslib/widget/LinkTextView.java
new file mode 100644
index 0000000000000..da865366668d4
--- /dev/null
+++ b/packages/SettingsLib/src/com/android/settingslib/widget/LinkTextView.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2017 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.settingslib.widget;
+
+import android.content.Context;
+import android.support.annotation.NonNull;
+import android.support.v4.view.ViewCompat;
+import android.text.Spanned;
+import android.text.method.LinkMovementMethod;
+import android.text.style.ClickableSpan;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.widget.TextView;
+import com.android.settingslib.accessibility.LinkAccessibilityHelper;
+/**
+ * Copied from setup wizard. This TextView performs two functions. The first is to make it so the
+ * link behaves properly and becomes clickable. The second is that it makes the link visible to
+ * accessibility services.
+ */
+public class LinkTextView extends TextView {
+
+ private LinkAccessibilityHelper mAccessibilityHelper;
+
+ public LinkTextView(Context context) {
+ this(context, null);
+ }
+
+ public LinkTextView(Context context, AttributeSet attrs) {
+ super(context, attrs);
+ mAccessibilityHelper = new LinkAccessibilityHelper(this);
+ ViewCompat.setAccessibilityDelegate(this, mAccessibilityHelper);
+ }
+
+ @Override
+ public void setText(CharSequence text, BufferType type) {
+ super.setText(text, type);
+ if (text instanceof Spanned) {
+ final ClickableSpan[] spans =
+ ((Spanned) text).getSpans(0, text.length(), ClickableSpan.class);
+ if (spans.length > 0) {
+ setMovementMethod(LinkMovementMethod.getInstance());
+ }
+ }
+ }
+
+ @Override
+ protected boolean dispatchHoverEvent(@NonNull MotionEvent event) {
+ if (mAccessibilityHelper.dispatchHoverEvent(event)) {
+ return true;
+ }
+ return super.dispatchHoverEvent(event);
+ }
+}
\ No newline at end of file