Clang: Request new diagnostics after reload

Diagnostics should be not computed after a file change but after creator
is requesting them. Now we wait for the dialog if the file should be
reloaded.

Change-Id: Id0d51874b95e0f8743002a91511d07e0ed47ecdc
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

src/plugins/clangcodemodel/clangbackendipcintegration.cpp

@@ -459,6 +459,17 @@ void IpcCommunicator::requestDiagnostics(const FileContainer &fileContainer)
     }
 }
 
+void IpcCommunicator::requestDiagnostics(Core::IDocument *document)
+{
+    const auto textDocument = qobject_cast<TextDocument*>(document);
+    const auto filePath = textDocument->filePath().toString();
+    const QString projectPartId = Utils::projectPartIdForFile(filePath);
+
+    requestDiagnostics(FileContainer(filePath,
+                                     projectPartId,
+                                     textDocument->document()->revision()));
+}
+
 void IpcCommunicator::updateChangeContentStartPosition(const QString &filePath, int position)
 {
     auto *document = cppDocument(filePath);

src/plugins/clangcodemodel/clangbackendipcintegration.h

@@ -138,6 +138,7 @@ public:
     void updateTranslationUnit(const QString &filePath, const QByteArray &contents, uint documentRevision);
     void updateUnsavedFile(const QString &filePath, const QByteArray &contents, uint documentRevision);
     void requestDiagnostics(const ClangBackEnd::FileContainer &fileContainer);
+    void requestDiagnostics(Core::IDocument *document);
     void updateChangeContentStartPosition(const QString &filePath, int position);
 
 public: // for tests

src/plugins/clangcodemodel/clangmodelmanagersupport.cpp

@@ -172,7 +172,7 @@ void ModelManagerSupportClang::onCppDocumentReloadFinishedOnTranslationUnit(bool
 {
     if (success) {
         Core::IDocument *document = qobject_cast<Core::IDocument *>(sender());
-        m_ipcCommunicator.updateTranslationUnit(document);
+        m_ipcCommunicator.requestDiagnostics(document);
     }
 }