Git: Allow clicking references in VcsOutputWindow

Fixes: QTCREATORBUG-16477
Change-Id: If1f36bec0826a3116e5261a270cd63a1536e13f5
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/git/gitplugin.cpp

@@ -919,6 +919,14 @@ GitPluginPrivate::GitPluginPrivate()
     m_gerritPlugin->initialize(remoteRepositoryMenu);
     m_gerritPlugin->updateActions(currentState());
     m_gerritPlugin->addToLocator(m_commandLocator);
+
+    connect(VcsOutputWindow::instance(), &VcsOutputWindow::referenceClicked,
+            this, [this](const QString &name) {
+        const VcsBasePluginState state = currentState();
+        QTC_ASSERT(state.hasTopLevel(), return);
+        m_gitClient.show(state.topLevel(), name);
+    });
+
 }
 
 void GitPluginPrivate::diffCurrentFile()

src/plugins/vcsbase/vcsoutputformatter.cpp

@@ -30,17 +30,24 @@
 
 namespace VcsBase {
 
-VcsOutputFormatter::VcsOutputFormatter() : m_urlRegexp("https?://\\S*") {}
+VcsOutputFormatter::VcsOutputFormatter() :
+    m_urlRegexp("https?://\\S*"),
+    m_referenceRegexp("(v[0-9]+\\.[0-9]+\\.[0-9]+[\\-A-Za-z0-9]*)" // v0.1.2-beta3
+                      "|([0-9a-f]{6,}(?:\\.\\.[0-9a-f]{6,})?)")    // 789acf or 123abc..456cde
+{
+}
 
 void VcsOutputFormatter::appendMessage(const QString &text, Utils::OutputFormat format)
 {
-    QString out = text;
+    const QRegularExpressionMatch urlMatch = m_urlRegexp.match(text);
-    const QRegularExpressionMatch match = m_urlRegexp.match(text);
+    const QRegularExpressionMatch referenceMatch = m_referenceRegexp.match(text);
-    if (match.hasMatch()) {
+
+    auto append = [this](const QRegularExpressionMatch &match,
+                         QString text, Utils::OutputFormat format) {
         const QTextCharFormat normalFormat = charFormat(format);
         OutputFormatter::appendMessage(text.left(match.capturedStart()), format);
         QTextCursor tc = plainTextEdit()->textCursor();
-        QStringRef url = match.capturedRef();
+        QStringView url = match.capturedView();
         int end = match.capturedEnd();
         while (url.rbegin()->isPunct()) {
             url.chop(1);
@@ -50,14 +57,22 @@ void VcsOutputFormatter::appendMessage(const QString &text, Utils::OutputFormat
         tc.insertText(url.toString(), linkFormat(normalFormat, url.toString()));
         tc.movePosition(QTextCursor::End, QTextCursor::MoveAnchor);
         OutputFormatter::appendMessage(text.mid(end), format);
-    } else {
+    };
+
+    if (urlMatch.hasMatch())
+        append(urlMatch, text, format);
+    else if (referenceMatch.hasMatch())
+        append(referenceMatch, text, format);
+    else
         OutputFormatter::appendMessage(text, format);
-    }
 }
 
 void VcsOutputFormatter::handleLink(const QString &href)
 {
-    QDesktopServices::openUrl(QUrl(href));
+    if (href.startsWith("http://") || href.startsWith("https://"))
+        QDesktopServices::openUrl(QUrl(href));
+    else if (!href.isEmpty())
+        emit referenceClicked(href);
 }
 
 }

src/plugins/vcsbase/vcsoutputformatter.h

@@ -31,14 +31,19 @@ namespace VcsBase {
 
 class VcsOutputFormatter : public Utils::OutputFormatter
 {
+    Q_OBJECT
 public:
     VcsOutputFormatter();
     ~VcsOutputFormatter() override = default;
     void appendMessage(const QString &text, Utils::OutputFormat format) override;
     void handleLink(const QString &href) override;
 
+signals:
+    void referenceClicked(const QString &reference);
+
 private:
     const QRegularExpression m_urlRegexp;
+    const QRegularExpression m_referenceRegexp;
 };
 
 }

src/plugins/vcsbase/vcsoutputwindow.cpp

@@ -102,6 +102,7 @@ public:
     void appendLines(const QString &s, const QString &repository = QString());
     void appendLinesWithStyle(const QString &s, VcsOutputWindow::MessageStyle style,
                               const QString &repository = QString());
+    VcsOutputFormatter *formatter();
 
 protected:
     void contextMenuEvent(QContextMenuEvent *event) override;
@@ -247,6 +248,11 @@ void OutputWindowPlainTextEdit::appendLinesWithStyle(const QString &s,
     }
 }
 
+VcsOutputFormatter *OutputWindowPlainTextEdit::formatter()
+{
+    return m_formatter;
+}
+
 void OutputWindowPlainTextEdit::setFormat(VcsOutputWindow::MessageStyle style)
 {
     m_formatter->setBoldFontEnabled(style == VcsOutputWindow::Command);
@@ -305,6 +311,8 @@ VcsOutputWindow::VcsOutputWindow()
     connect(this, &IOutputPane::resetZoom, &d->widget, &Core::OutputWindow::resetZoom);
     connect(TextEditor::TextEditorSettings::instance(), &TextEditor::TextEditorSettings::behaviorSettingsChanged,
             this, updateBehaviorSettings);
+    connect(d->widget.formatter(), &VcsOutputFormatter::referenceClicked,
+            VcsOutputWindow::instance(), &VcsOutputWindow::referenceClicked);
 }
 
 static QString filterPasswordFromUrls(const QString &input)

src/plugins/vcsbase/vcsoutputwindow.h

@@ -76,6 +76,9 @@ public:
         Message, // A blue message text (e.g. "command has finished successfully")
     };
 
+signals:
+    void referenceClicked(const QString &reference);
+
 public slots:
     static void setRepository(const QString &);
     static void clearRepository();