Clang: Fix text format for completion details

The tooltip text right to the completion list item is prepared for rich
text (html) interpretation, but the QLabel the text will finally be
displayed with has no explicit text format set and thus defaults to auto
detection. The auto detection works fine for e.g. "<i>int optionalArg</
i>" but fails for "const Foo&amp;".

Task-number: QTCREATORBUG-15630
Change-Id: Ia58d65ee542730e4823c69150d452cdde98112f8
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

src/plugins/clangcodemodel/clangassistproposalmodel.cpp

@@ -39,6 +39,11 @@
 namespace ClangCodeModel {
 namespace Internal {
 
+ClangAssistProposalModel::ClangAssistProposalModel()
+{
+    setDetailTextFormat(Qt::RichText);
+}
+
 bool ClangAssistProposalModel::isSortable(const QString &/*prefix*/) const
 {
     return true;

src/plugins/clangcodemodel/clangassistproposalmodel.h

@@ -41,6 +41,8 @@ namespace Internal {
 class ClangAssistProposalModel : public TextEditor::GenericProposalModel
 {
 public:
+    ClangAssistProposalModel();
+
     bool isSortable(const QString &prefix) const override;
     void sort(const QString &prefix) override;
 };

src/plugins/texteditor/codeassist/genericproposalmodel.cpp

@@ -135,6 +135,7 @@ private:
 } // Anonymous
 
 GenericProposalModel::GenericProposalModel()
+    : m_detailTextFormat(Qt::AutoText)
 {}
 
 GenericProposalModel::~GenericProposalModel()
@@ -150,6 +151,16 @@ void GenericProposalModel::loadContent(const QList<AssistProposalItem *> &items)
         m_idByText.insert(m_originalItems.at(i)->text(), i);
 }
 
+Qt::TextFormat GenericProposalModel::detailTextFormat() const
+{
+    return m_detailTextFormat;
+}
+
+void GenericProposalModel::setDetailTextFormat(Qt::TextFormat detailTextFormat)
+{
+    m_detailTextFormat = detailTextFormat;
+}
+
 void GenericProposalModel::reset()
 {
     m_currentItems = m_originalItems;

src/plugins/texteditor/codeassist/genericproposalmodel.h

@@ -72,12 +72,16 @@ public:
     void setSortingAllowed(bool isAllowed);
     bool isSortingAllowed() const;
 
+    Qt::TextFormat detailTextFormat() const;
+    void setDetailTextFormat(Qt::TextFormat detailTextFormat);
+
 protected:
     QList<AssistProposalItem *> m_currentItems;
 
 private:
     QHash<QString, int> m_idByText;
     QList<AssistProposalItem *> m_originalItems;
+    Qt::TextFormat m_detailTextFormat;
 };
 } // TextEditor
 

src/plugins/texteditor/codeassist/genericproposalwidget.cpp

@@ -168,6 +168,11 @@ public:
         m_label->setText(text);
     }
 
+    void setTextFormat(Qt::TextFormat textFormat)
+    {
+        m_label->setTextFormat(textFormat);
+    }
+
     // Workaround QTCREATORBUG-11653
     void calculateMaximumWidth()
     {
@@ -312,6 +317,7 @@ void GenericProposalWidgetPrivate::maybeShowInfoTip()
 
     m_infoFrame->move(m_completionListView->infoFramePos());
     m_infoFrame->setText(infoTip);
+    m_infoFrame->setTextFormat(m_model->detailTextFormat());
     m_infoFrame->calculateMaximumWidth();
     m_infoFrame->adjustSize();
     m_infoFrame->show();