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Improve highlighting in search results.

Browse Source 
Previously, we didn't support highlighting search results that had
tokens in the middle of the matches, which is a possibility with FTS.
Now we do more robust highlighting, as well as highlight matches in
phone numbers.
This commit is contained in:
Greyson Parrelli 2018-06-15 12:10:32 -07:00
parent 89fd7dda23
commit afec9e8cb0
1 changed files with 24 additions and 10 deletions
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36
src/org/thoughtcrime/securesms/ConversationListItem.java
View File

@ -28,6 +28,7 @@ import android.support.annotation.Nullable;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.style.StyleSpan;
import android.util.AttributeSet;
import android.view.View;
@ -36,6 +37,7 @@ import android.widget.RelativeLayout;
import android.widget.TextView;
import com.amulyakhare.textdrawable.TextDrawable;
import com.annimon.stream.Stream;
import org.thoughtcrime.securesms.components.AlertView;
import org.thoughtcrime.securesms.components.AvatarImageView;
@ -52,6 +54,7 @@ import org.thoughtcrime.securesms.util.Util;
import org.thoughtcrime.securesms.util.ViewUtil;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
import java.util.Set;
@ -66,7 +69,6 @@ public class ConversationListItem extends RelativeLayout
private final static Typeface BOLD_TYPEFACE = Typeface.create("sans-serif", Typeface.BOLD);
private final static Typeface LIGHT_TYPEFACE = Typeface.create("sans-serif-light", Typeface.NORMAL);
private final static StyleSpan BOLD_SPAN = new StyleSpan(Typeface.BOLD);
private Set<Long> selectedThreads;
private Recipient recipient;
@ -180,7 +182,7 @@ public class ConversationListItem extends RelativeLayout
this.recipient.addListener(this);
fromView.setText(getHighlightedSpan(locale, recipient.getName(), highlightSubstring));
subjectView.setText(contact.getAddress().toPhoneString());
subjectView.setText(getHighlightedSpan(locale, contact.getAddress().toPhoneString(), highlightSubstring));
dateView.setText("");
archivedView.setVisibility(GONE);
unreadIndicator.setVisibility(GONE);
@ -319,25 +321,37 @@ public class ConversationListItem extends RelativeLayout
@Nullable String value,
@Nullable String highlight)
{
if (value == null) {
if (TextUtils.isEmpty(value)) {
return new SpannableString("");
}
value = value.replaceAll("\n", " ");
if (highlight == null) {
if (TextUtils.isEmpty(highlight)) {
return new SpannableString(value);
}
int startPosition = value.toLowerCase(locale).indexOf(highlight.toLowerCase());
int endPosition = startPosition + highlight.length();
if (startPosition < 0) {
return new SpannableString(value);
}
String normalizedValue = value.toLowerCase(locale);
String normalizedTest = highlight.toLowerCase(locale);
List<String> testTokens = Stream.of(normalizedTest.split(" ")).filter(s -> s.trim().length() > 0).toList();
Spannable spanned = new SpannableString(value);
spanned.setSpan(BOLD_SPAN, startPosition, endPosition, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
int searchStartIndex = 0;
for (String token : testTokens) {
if (searchStartIndex >= spanned.length()) {
break;
}
int start = normalizedValue.indexOf(token, searchStartIndex);
if (start >= 0) {
int end = Math.min(start + token.length(), spanned.length());
spanned.setSpan(new StyleSpan(Typeface.BOLD), start, end, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
searchStartIndex = end;
}
}
return spanned;
}