Visually highlight mentions in MUCs

fixes #267

3 files changed, 26 insertions, 0 deletions

diff --git a/main/src/ui/conversation_summary/default_message_display.vala b/main/src/ui/conversation_summary/default_message_display.vala
index 954012a1..519e5107 100644
--- a/main/src/ui/conversation_summary/default_message_display.vala
+++ b/main/src/ui/conversation_summary/default_message_display.vala
@@ -48,6 +48,9 @@ public class MetaMessageItem : Plugins.MetaConversationItem {
     public override Object? get_widget(Plugins.WidgetType widget_type) {
         MessageTextView text_view = new MessageTextView() { visible = true };
         text_view.add_text(message.body);
+        if (conversation.type_ == Conversation.Type.GROUPCHAT)  {
+            text_view.highlight_word(conversation.nickname);
+        }
         return text_view;
     }
 }
diff --git a/main/src/ui/conversation_summary/message_textview.vala b/main/src/ui/conversation_summary/message_textview.vala
index 9fe3b60b..d11fd9e1 100644
--- a/main/src/ui/conversation_summary/message_textview.vala
+++ b/main/src/ui/conversation_summary/message_textview.vala
@@ -8,11 +8,13 @@ namespace Dino.Ui.ConversationSummary {
 public class MessageTextView : TextView {
 
     private TextTag link_tag;
+    private TextTag bold_tag;
 
     public MessageTextView() {
         Object(editable:false, hexpand:true, wrap_mode:WrapMode.WORD_CHAR);
 
         link_tag = buffer.create_tag("url", underline: Pango.Underline.SINGLE, foreground: "blue");
+        bold_tag = buffer.create_tag("semibold", weight: Pango.Weight.SEMIBOLD);
         button_release_event.connect((event_button) => {
             if (event_button.button == 1) {
                 open_url(event_button);
@@ -44,6 +46,24 @@ public class MessageTextView : TextView {
         format_suffix_urls(text);
     }
 
+    public void highlight_word(string word) {
+        Regex word_regex = new Regex("""\b""" + Regex.escape_string(word) + """\b""");
+        MatchInfo match_info;
+        word_regex.match(buffer.text, 0, out match_info);
+        for (; match_info.matches(); match_info.next()) {
+            int start;
+            int end;
+            match_info.fetch_pos(0, out start, out end);
+            start = buffer.text[0:start].char_count();
+            end = buffer.text[0:end].char_count();
+            TextIter start_iter;
+            TextIter end_iter;
+            buffer.get_iter_at_offset(out start_iter, start);
+            buffer.get_iter_at_offset(out end_iter, end);
+            buffer.apply_tag_by_name("semibold", start_iter, end_iter);
+        }
+    }
+
     private void update_display_style() {
         LinkButton lnk = new LinkButton("http://example.com");
         RGBA link_color = lnk.get_style_context().get_color(StateFlags.LINK);
diff --git a/main/src/ui/conversation_summary/slashme_message_display.vala b/main/src/ui/conversation_summary/slashme_message_display.vala
index 3c8af78c..1ee20748 100644
--- a/main/src/ui/conversation_summary/slashme_message_display.vala
+++ b/main/src/ui/conversation_summary/slashme_message_display.vala
@@ -53,6 +53,9 @@ public class MetaSlashmeItem : Plugins.MetaConversationItem {
 
     public override Object? get_widget(Plugins.WidgetType widget_type) {
         text_view = new MessageTextView() { valign=Align.CENTER, vexpand=true, visible = true };
+        if (conversation.type_ == Conversation.Type.GROUPCHAT)  {
+            text_view.highlight_word(conversation.nickname);
+        }
 
         string display_name = Util.get_message_display_name(stream_interactor, message, conversation.account);
         string color = Util.get_name_hex_color(stream_interactor, conversation.account, conversation.counterpart, Util.is_dark_theme(text_view));