RESTRICT AUTOMERGE Do not linkify text with RLO/LRO characters.
Also don't show smart actions for selections in text with unsupported
characters.
Bug: 116321860
Test: atest android.view.textclassifier.TextClassificationManagerTest \
android.text.util.cts.LinkifyTest \
android.text.util.LinkifyTest \
android.widget.TextViewActivityTest
Change-Id: I01b5e936aa4dfc937a98f50e9fc8171666861a61
(cherry picked from commit a69950ce18f85ea8514083a5e175450e17e93565)
diff --git a/core/java/android/text/util/Linkify.java b/core/java/android/text/util/Linkify.java
index c905f49..dc68da0 100644
--- a/core/java/android/text/util/Linkify.java
+++ b/core/java/android/text/util/Linkify.java
@@ -29,6 +29,7 @@
import android.text.method.LinkMovementMethod;
import android.text.method.MovementMethod;
import android.text.style.URLSpan;
+import android.util.Log;
import android.util.Patterns;
import android.view.textclassifier.TextClassifier;
import android.view.textclassifier.TextLinks;
@@ -77,6 +78,9 @@
*/
public class Linkify {
+
+ private static final String LOG_TAG = "Linkify";
+
/**
* Bit field indicating that web URLs should be matched in methods that
* take an options mask
@@ -246,6 +250,11 @@
private static boolean addLinks(@NonNull Spannable text, @LinkifyMask int mask,
@Nullable Context context) {
+ if (text != null && containsUnsupportedCharacters(text.toString())) {
+ android.util.EventLog.writeEvent(0x534e4554, "116321860", -1, "");
+ return false;
+ }
+
if (mask == 0) {
return false;
}
@@ -292,6 +301,29 @@
}
/**
+ * Returns true if the specified text contains at least one unsupported character for applying
+ * links. Also logs the error.
+ *
+ * @param text the text to apply links to
+ * @hide
+ */
+ public static boolean containsUnsupportedCharacters(String text) {
+ if (text.contains("\u202C")) {
+ Log.e(LOG_TAG, "Unsupported character for applying links: u202C");
+ return true;
+ }
+ if (text.contains("\u202D")) {
+ Log.e(LOG_TAG, "Unsupported character for applying links: u202D");
+ return true;
+ }
+ if (text.contains("\u202E")) {
+ Log.e(LOG_TAG, "Unsupported character for applying links: u202E");
+ return true;
+ }
+ return false;
+ }
+
+ /**
* Scans the text of the provided TextView and turns all occurrences of
* the link types indicated in the mask into clickable links. If matches
* are found the movement method for the TextView is set to
@@ -461,6 +493,11 @@
public static final boolean addLinks(@NonNull Spannable spannable, @NonNull Pattern pattern,
@Nullable String defaultScheme, @Nullable String[] schemes,
@Nullable MatchFilter matchFilter, @Nullable TransformFilter transformFilter) {
+ if (spannable != null && containsUnsupportedCharacters(spannable.toString())) {
+ android.util.EventLog.writeEvent(0x534e4554, "116321860", -1, "");
+ return false;
+ }
+
final String[] schemesCopy;
if (defaultScheme == null) defaultScheme = "";
if (schemes == null || schemes.length < 1) {
diff --git a/core/java/android/view/textclassifier/TextClassification.java b/core/java/android/view/textclassifier/TextClassification.java
index 9511a9e..49ca969 100644
--- a/core/java/android/view/textclassifier/TextClassification.java
+++ b/core/java/android/view/textclassifier/TextClassification.java
@@ -104,7 +104,7 @@
/**
* @hide
*/
- static final TextClassification EMPTY = new TextClassification.Builder().build();
+ public static final TextClassification EMPTY = new TextClassification.Builder().build();
private static final String LOG_TAG = "TextClassification";
// TODO(toki): investigate a way to derive this based on device properties.
diff --git a/core/java/android/view/textclassifier/TextLinksParams.java b/core/java/android/view/textclassifier/TextLinksParams.java
index be4c3bc..c21206c 100644
--- a/core/java/android/view/textclassifier/TextLinksParams.java
+++ b/core/java/android/view/textclassifier/TextLinksParams.java
@@ -107,6 +107,13 @@
Preconditions.checkNotNull(textLinks);
final String textString = text.toString();
+
+ if (Linkify.containsUnsupportedCharacters(textString)) {
+ // Do not apply links to text containing unsupported characters.
+ android.util.EventLog.writeEvent(0x534e4554, "116321860", -1, "");
+ return TextLinks.STATUS_NO_LINKS_APPLIED;
+ }
+
if (!textString.startsWith(textLinks.getText())) {
return TextLinks.STATUS_DIFFERENT_TEXT;
}
diff --git a/core/java/android/widget/SelectionActionModeHelper.java b/core/java/android/widget/SelectionActionModeHelper.java
index 6cb0eaa..0d88e69 100644
--- a/core/java/android/widget/SelectionActionModeHelper.java
+++ b/core/java/android/widget/SelectionActionModeHelper.java
@@ -31,6 +31,7 @@
import android.text.Selection;
import android.text.Spannable;
import android.text.TextUtils;
+import android.text.util.Linkify;
import android.util.Log;
import android.view.ActionMode;
import android.view.textclassifier.SelectionEvent;
@@ -1045,7 +1046,12 @@
trimText();
final TextClassification classification;
- if (mContext.getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.P) {
+ if (Linkify.containsUnsupportedCharacters(mText)) {
+ // Do not show smart actions for text containing unsupported characters.
+ android.util.EventLog.writeEvent(0x534e4554, "116321860", -1, "");
+ classification = TextClassification.EMPTY;
+ } else if (mContext.getApplicationInfo().targetSdkVersion
+ >= Build.VERSION_CODES.P) {
final TextClassification.Request request =
new TextClassification.Request.Builder(
mTrimmedText, mRelativeStart, mRelativeEnd)
diff --git a/core/tests/coretests/src/android/view/textclassifier/TextClassificationManagerTest.java b/core/tests/coretests/src/android/view/textclassifier/TextClassificationManagerTest.java
index c8a53cc..9015e92 100644
--- a/core/tests/coretests/src/android/view/textclassifier/TextClassificationManagerTest.java
+++ b/core/tests/coretests/src/android/view/textclassifier/TextClassificationManagerTest.java
@@ -39,6 +39,8 @@
import android.support.test.InstrumentationRegistry;
import android.support.test.filters.SmallTest;
import android.support.test.runner.AndroidJUnit4;
+import android.text.Spannable;
+import android.text.SpannableString;
import org.hamcrest.BaseMatcher;
import org.hamcrest.Description;
@@ -307,6 +309,16 @@
}
@Test
+ public void testApplyLinks_unsupportedCharacter() {
+ if (isTextClassifierDisabled()) return;
+ Spannable url = new SpannableString("\u202Emoc.diordna.com");
+ TextLinks.Request request = new TextLinks.Request.Builder(url).build();
+ assertEquals(
+ TextLinks.STATUS_NO_LINKS_APPLIED,
+ mClassifier.generateLinks(request).apply(url, 0, null));
+ }
+
+ @Test
public void testSetTextClassifier() {
TextClassifier classifier = mock(TextClassifier.class);
mTcm.setTextClassifier(classifier);
diff --git a/core/tests/coretests/src/android/widget/TextViewActivityTest.java b/core/tests/coretests/src/android/widget/TextViewActivityTest.java
index 70dc618..90758ba 100644
--- a/core/tests/coretests/src/android/widget/TextViewActivityTest.java
+++ b/core/tests/coretests/src/android/widget/TextViewActivityTest.java
@@ -983,6 +983,19 @@
}
@Test
+ public void testNoAssistItemForTextFieldWithUnsupportedCharacters() throws Throwable {
+ useSystemDefaultTextClassifier();
+ final String text = "\u202Emoc.diordna.com";
+ final TextView textView = mActivity.findViewById(R.id.textview);
+ mActivityRule.runOnUiThread(() -> textView.setText(text));
+ mInstrumentation.waitForIdleSync();
+
+ onView(withId(R.id.textview)).perform(longPressOnTextAtIndex(text.indexOf('.')));
+ sleepForFloatingToolbarPopup();
+ assertFloatingToolbarDoesNotContainItem(android.R.id.textAssist);
+ }
+
+ @Test
public void testSelectionMetricsLogger_noAbandonAfterCopy() throws Throwable {
final List<SelectionEvent> selectionEvents = new ArrayList<>();
final TextClassifier classifier = new TextClassifier() {
