Made #channel link in /mentions jump to #channel split (#2220)

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Unversioned
 
+- Minor: Made "#channel" in `/mentions` tab a clickable link which takes you to the channel that you were mentioned in. (#2220)
 - Minor: Added a keyboard shortcut (Ctrl+F5) for "Reconnect" (#2215)
 - Minor: Made `Try to find usernames without @ prefix` option still resolve usernames when special characters (commas, dots, (semi)colons, exclamation mark, question mark) are appended to them. (#2212)
 - Minor: Made usercard update user's display name (#2160)

src/messages/Link.hpp

@@ -20,6 +20,7 @@ public:
         AutoModAllow,
         AutoModDeny,
         OpenAccountsPage,
+        JumpToChannel,
     };
 
     Link();

src/messages/SharedMessageBuilder.cpp

@@ -356,7 +356,7 @@ void SharedMessageBuilder::addTextOrEmoji(const QString &string_)
 void SharedMessageBuilder::appendChannelName()
 {
     QString channelName("#" + this->channel->getName());
-    Link link(Link::Url, this->channel->getName() + "\n" + this->message().id);
+    Link link(Link::JumpToChannel, this->channel->getName());
 
     this->emplace<TextElement>(channelName, MessageElementFlag::ChannelName,
                                MessageColor::System)

src/widgets/helper/ChannelView.cpp

@@ -2043,6 +2043,41 @@ void ChannelView::handleLinkClick(QMouseEvent *event, const Link &link,
                                        SettingsDialogPreference::Accounts);
         }
         break;
+        case Link::JumpToChannel: {
+            // Get all currently open pages
+            QList<SplitContainer *> openPages;
+
+            auto &nb = getApp()->windows->getMainWindow().getNotebook();
+            for (int i = 0; i < nb.getPageCount(); ++i)
+            {
+                openPages.push_back(
+                    static_cast<SplitContainer *>(nb.getPageAt(i)));
+            }
+
+            for (auto *page : openPages)
+            {
+                auto splits = page->getSplits();
+
+                // Search for channel matching link in page/split container
+                // TODO(zneix): Consider opening a channel if it's closed (?)
+                auto it = std::find_if(
+                    splits.begin(), splits.end(), [link](Split *split) {
+                        return split->getChannel()->getName() == link.value;
+                    });
+
+                if (it != splits.end())
+                {
+                    // Select SplitContainer and Split itself where mention message was sent
+                    // TODO(zneix): Try exploring ways of scrolling to a certain message as well
+                    nb.select(page);
+
+                    Split *split = *it;
+                    page->setSelected(split);
+                    break;
+                }
+            }
+        }
+        break;
 
         default:;
     }