Display rich text in text preview

Show rich text and title in Text preview and Image + Text preview UI.

Fix: 297493142
Test: intgration tests
Test: manual testing using ShareTest app checking that Texp preview UI
shows rich text in title (Intent.EXTRA_TITLE) and in text
(Intent.EXTRA_TEXT)
Test: manual testing checkin that Iamge + Text preview UI displays rich
text.

Change-Id: I681716c21b8940f3dc367273a104f8cc216b7206

2 files changed, 18 insertions, 7 deletions

diff --git a/java/src/com/android/intentresolver/contentpreview/ChooserContentPreviewUi.java b/java/src/com/android/intentresolver/contentpreview/ChooserContentPreviewUi.java
index d279f11f..b7650b9d 100644
--- a/java/src/com/android/intentresolver/contentpreview/ChooserContentPreviewUi.java
+++ b/java/src/com/android/intentresolver/contentpreview/ChooserContentPreviewUi.java
@@ -200,7 +200,7 @@ public final class ChooserContentPreviewUi {
             ImageLoader imageLoader,
             HeadlineGenerator headlineGenerator) {
         CharSequence sharingText = targetIntent.getCharSequenceExtra(Intent.EXTRA_TEXT);
-        String previewTitle = targetIntent.getStringExtra(Intent.EXTRA_TITLE);
+        CharSequence previewTitle = targetIntent.getCharSequenceExtra(Intent.EXTRA_TITLE);
         ClipData previewData = targetIntent.getClipData();
         Uri previewThumbnail = null;
         if (previewData != null) {
diff --git a/java/src/com/android/intentresolver/contentpreview/TextContentPreviewUi.java b/java/src/com/android/intentresolver/contentpreview/TextContentPreviewUi.java
index c38ed03a..b383fbcf 100644
--- a/java/src/com/android/intentresolver/contentpreview/TextContentPreviewUi.java
+++ b/java/src/com/android/intentresolver/contentpreview/TextContentPreviewUi.java
@@ -20,6 +20,7 @@ import static com.android.intentresolver.util.UriFilters.isOwnedByCurrentUser;
 
 import android.content.res.Resources;
 import android.net.Uri;
+import android.text.SpannableStringBuilder;
 import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -93,13 +94,9 @@ class TextContentPreviewUi extends ContentPreviewUi {
 
         TextView textView = contentPreviewLayout.findViewById(
                 com.android.internal.R.id.content_preview_text);
-        String text = mSharingText.toString();
 
-        // If we're only previewing one line, then strip out newlines.
-        if (textView.getMaxLines() == 1) {
-            text = text.replace("\n", " ");
-        }
-        textView.setText(text);
+        textView.setText(
+                textView.getMaxLines() == 1 ? replaceLineBreaks(mSharingText) : mSharingText);
 
         TextView previewTitleView = contentPreviewLayout.findViewById(
                 com.android.internal.R.id.content_preview_title);
@@ -135,4 +132,18 @@ class TextContentPreviewUi extends ContentPreviewUi {
 
         return contentPreviewLayout;
     }
+
+    @Nullable
+    private static CharSequence replaceLineBreaks(@Nullable CharSequence text) {
+        if (text == null) {
+            return null;
+        }
+        SpannableStringBuilder string = new SpannableStringBuilder(text);
+        for (int i = 0, size = string.length(); i < size; i++) {
+            if (string.charAt(i) == '\n') {
+                string.replace(i, i + 1, " ");
+            }
+        }
+        return string;
+    }
 }