From 9c06ba5d25e8007f7d21971edce4c9791be009ed Mon Sep 17 00:00:00 2001
From: Konstantinos Sideris <sideris.konstantin@gmail.com>
Date: Wed, 12 Sep 2018 20:54:44 +0300
Subject: [PATCH] Open user profile on matrix.to links

---
 CHANGELOG.md                  |  2 ++
 src/timeline/TimelineItem.cpp | 41 +++++++++++++++++++++++++++++++++++
 src/timeline/TimelineItem.h   | 10 +++++++++
 3 files changed, 53 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1d8aac84..5e97fbbd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,8 @@
 ## [Unreleased]
 ### Features
 - Support for sending & receiving markdown formatted messages. (#283)
+- Context menu option to show the raw text message of an event. (#437)
+- Clicking on a user pill link will open the user profile.
 
 ### Improvements
 - Update Polish translation (#430)
diff --git a/src/timeline/TimelineItem.cpp b/src/timeline/TimelineItem.cpp
index 5bec4458..1654e451 100644
--- a/src/timeline/TimelineItem.cpp
+++ b/src/timeline/TimelineItem.cpp
@@ -16,6 +16,7 @@
  */
 
 #include <QContextMenuEvent>
+#include <QDesktopServices>
 #include <QFontDatabase>
 #include <QMenu>
 #include <QTimer>
@@ -35,6 +36,7 @@
 #include "timeline/widgets/VideoItem.h"
 
 #include "dialogs/RawMessage.h"
+#include "mtx/identifiers.hpp"
 
 constexpr int MSG_RIGHT_MARGIN = 7;
 constexpr int MSG_PADDING      = 20;
@@ -61,8 +63,47 @@ TextLabel::TextLabel(const QString &text, QWidget *parent)
                 &TextLabel::adjustHeight);
         document()->setDocumentMargin(0);
 
+        setFocusPolicy(Qt::NoFocus);
         setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
         setFixedHeight(0);
+
+        connect(this, &TextLabel::linkActivated, this, [](const QUrl &url) {
+                auto parts          = url.toString().split('/');
+                auto defaultHandler = [](const QUrl &url) { QDesktopServices::openUrl(url); };
+
+                if (url.host() != "matrix.to" || parts.isEmpty())
+                        return defaultHandler(url);
+
+                try {
+                        using namespace mtx::identifiers;
+                        parse<User>(parts.last().toStdString());
+                } catch (const std::exception &) {
+                        return defaultHandler(url);
+                }
+
+                auto user_id = parts.last();
+                auto room_id = ChatPage::instance()->currentRoom();
+
+                MainWindow::instance()->openUserProfile(user_id, room_id);
+        });
+}
+
+void
+TextLabel::mousePressEvent(QMouseEvent *e)
+{
+        link_ = (e->button() & Qt::LeftButton) ? anchorAt(e->pos()) : QString();
+        QTextBrowser::mousePressEvent(e);
+}
+
+void
+TextLabel::mouseReleaseEvent(QMouseEvent *e)
+{
+        if (e->button() & Qt::LeftButton && !link_.isEmpty() && anchorAt(e->pos()) == link_) {
+                emit linkActivated(link_);
+                return;
+        }
+
+        QTextBrowser::mouseReleaseEvent(e);
 }
 
 StatusIndicator::StatusIndicator(QWidget *parent)
diff --git a/src/timeline/TimelineItem.h b/src/timeline/TimelineItem.h
index fb961b6c..32d586f5 100644
--- a/src/timeline/TimelineItem.h
+++ b/src/timeline/TimelineItem.h
@@ -105,8 +105,18 @@ public:
 
         void wheelEvent(QWheelEvent *event) override { event->ignore(); }
 
+protected:
+        void mousePressEvent(QMouseEvent *e) override;
+        void mouseReleaseEvent(QMouseEvent *e) override;
+
 private slots:
         void adjustHeight(const QSizeF &size) { setFixedHeight(size.height()); }
+
+signals:
+        void linkActivated(const QUrl &link);
+
+private:
+        QString link_;
 };
 
 class UserProfileFilter : public QObject