Clang: Gray out diagnostics on document change

When reparses take a while, this is helpful.

Change-Id: Ie2003a3d65b30d944d20fa19dd4161412182851c
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/clangcodemodel/clangdiagnosticmanager.cpp

@@ -41,6 +41,7 @@
 #include <utils/fileutils.h>
 #include <utils/proxyaction.h>
 #include <utils/qtcassert.h>
+#include <utils/theme/theme.h>
 
 #include <QFileInfo>
 #include <QTextBlock>
@@ -347,6 +348,19 @@ ClangDiagnosticManager::diagnosticsAt(uint line, uint column) const
     return diagnostics;
 }
 
+void ClangDiagnosticManager::invalidateDiagnostics()
+{
+    if (m_diagnosticsInvalidated)
+        return;
+
+    m_diagnosticsInvalidated = true;
+    for (ClangTextMark *textMark : m_clangTextMarks) {
+        textMark->setColor(::Utils::Theme::Color::IconsDisabledColor);
+        textMark->updateIcon(/*valid=*/ false);
+        textMark->updateMarker();
+    }
+}
+
 void ClangDiagnosticManager::clearDiagnosticsWithFixIts()
 {
     m_fixItdiagnostics.clear();
@@ -364,6 +378,7 @@ void ClangDiagnosticManager::generateEditorSelections()
 void ClangDiagnosticManager::processNewDiagnostics(
         const QVector<ClangBackEnd::DiagnosticContainer> &allDiagnostics)
 {
+    m_diagnosticsInvalidated = false;
     filterDiagnostics(allDiagnostics);
 
     generateTextMarks();

src/plugins/clangcodemodel/clangdiagnosticmanager.h

@@ -58,6 +58,7 @@ public:
     bool hasDiagnosticsAt(uint line, uint column) const;
     QVector<ClangBackEnd::DiagnosticContainer> diagnosticsAt(uint line, uint column) const;
 
+    void invalidateDiagnostics();
     void clearDiagnosticsWithFixIts();
 
 private:
@@ -80,6 +81,7 @@ private:
     QList<QTextEdit::ExtraSelection> m_extraSelections;
     TextEditor::RefactorMarkers m_fixItAvailableMarkers;
     std::vector<ClangTextMark *> m_clangTextMarks;
+    bool m_diagnosticsInvalidated = false;
 };
 
 } // namespace Internal

src/plugins/clangcodemodel/clangeditordocumentprocessor.cpp

@@ -281,6 +281,11 @@ void ClangEditorDocumentProcessor::editorDocumentTimerRestarted()
     m_updateTranslationUnitTimer.stop(); // Wait for the next call to run().
 }
 
+void ClangEditorDocumentProcessor::invalidateDiagnostics()
+{
+    m_diagnosticManager.invalidateDiagnostics();
+}
+
 void ClangEditorDocumentProcessor::setParserConfig(
         const CppTools::BaseEditorDocumentParser::Configuration config)
 {

src/plugins/clangcodemodel/clangeditordocumentprocessor.h

@@ -77,6 +77,7 @@ public:
     TextEditor::QuickFixOperations
     extraRefactoringOperations(const TextEditor::AssistInterface &assistInterface) override;
 
+    void invalidateDiagnostics() override;
     bool hasDiagnosticsAt(uint line, uint column) const override;
     void addDiagnosticToolTipToLayout(uint line, uint column, QLayout *target) const override;
 

src/plugins/clangcodemodel/clangtextmark.cpp

@@ -78,23 +78,29 @@ ClangTextMark::ClangTextMark(const QString &fileName,
                               : QApplication::translate("Clang Code Model Marks", "Code Model Error"));
     setPriority(warning ? TextEditor::TextMark::NormalPriority
                         : TextEditor::TextMark::HighPriority);
-    setIcon(diagnostic.severity());
+    updateIcon();
     setLineAnnotation(diagnostic.text().toString());
 }
 
-void ClangTextMark::setIcon(ClangBackEnd::DiagnosticSeverity severity)
+void ClangTextMark::updateIcon(bool valid)
 {
-    static const QIcon errorIcon = Utils::Icon({
-            {QLatin1String(":/clangcodemodel/images/error.png"), Utils::Theme::IconsErrorColor}
-        }, Utils::Icon::Tint).icon();
-    static const QIcon warningIcon = Utils::Icon({
-            {QLatin1String(":/clangcodemodel/images/warning.png"), Utils::Theme::IconsWarningColor}
-        }, Utils::Icon::Tint).icon();
+    static const QIcon errorIcon = Utils::Icon(
+        {{":/clangcodemodel/images/error.png", Utils::Theme::IconsErrorColor}},
+        Utils::Icon::Tint).icon();
+    static const QIcon warningIcon = Utils::Icon(
+        {{":/clangcodemodel/images/warning.png", Utils::Theme::IconsWarningColor}},
+        Utils::Icon::Tint).icon();
+    static const QIcon invalidErrorIcon = Utils::Icon(
+        {{":/clangcodemodel/images/error.png", Utils::Theme::IconsDisabledColor}},
+        Utils::Icon::Tint).icon();
+    static const QIcon invalidWarningIcon = Utils::Icon(
+        {{":/clangcodemodel/images/warning.png", Utils::Theme::IconsDisabledColor}},
+        Utils::Icon::Tint).icon();
 
-    if (isWarningOrNote(severity))
-        TextMark::setIcon(warningIcon);
+    if (isWarningOrNote(m_diagnostic.severity()))
+        setIcon(valid ? warningIcon : invalidWarningIcon);
     else
-        TextMark::setIcon(errorIcon);
+        setIcon(valid ? errorIcon : invalidErrorIcon);
 }
 
 bool ClangTextMark::addToolTipContent(QLayout *target) const

src/plugins/clangcodemodel/clangtextmark.h

@@ -43,8 +43,8 @@ public:
                   const ClangBackEnd::DiagnosticContainer &diagnostic,
                   const RemovedFromEditorHandler &removedHandler);
 
+    void updateIcon(bool valid = true);
 private:
-    void setIcon(ClangBackEnd::DiagnosticSeverity severity);
     bool addToolTipContent(QLayout *target) const override;
     void removedFromEditor() override;
 

src/plugins/cppeditor/cppeditordocument.cpp

@@ -257,6 +257,8 @@ void CppEditorDocument::scheduleProcessDocument()
 
 void CppEditorDocument::processDocument()
 {
+    processor()->invalidateDiagnostics();
+
     if (processor()->isParserRunning() || m_processorRevision != contentsRevision()) {
         m_processorTimer.start();
         processor()->editorDocumentTimerRestarted();

src/plugins/cpptools/baseeditordocumentprocessor.cpp

@@ -87,6 +87,10 @@ void BaseEditorDocumentProcessor::editorDocumentTimerRestarted()
 {
 }
 
+void BaseEditorDocumentProcessor::invalidateDiagnostics()
+{
+}
+
 void BaseEditorDocumentProcessor::setParserConfig(
         const BaseEditorDocumentParser::Configuration config)
 {

src/plugins/cpptools/baseeditordocumentprocessor.h

@@ -66,6 +66,7 @@ public:
     virtual TextEditor::QuickFixOperations
     extraRefactoringOperations(const TextEditor::AssistInterface &assistInterface);
 
+    virtual void invalidateDiagnostics();
     virtual bool hasDiagnosticsAt(uint line, uint column) const;
     virtual void addDiagnosticToolTipToLayout(uint line, uint column, QLayout *layout) const;