CMake: Make sure BuildConfiguration enabled state is accurate

Make sure the buildconfiguration is disabled while parsing and that
it becomes enabled again after an error in CMake is fixed.

Change-Id: Iec919e3c74c465a14ebb87adb9af142537823f00
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp

@@ -77,7 +77,7 @@ CMakeBuildConfiguration::~CMakeBuildConfiguration()
 
 bool CMakeBuildConfiguration::isEnabled() const
 {
-    return m_error.isEmpty();
+    return m_error.isEmpty() && !isParsing();
 }
 
 QString CMakeBuildConfiguration::disabledReason() const
@@ -145,6 +145,7 @@ void CMakeBuildConfiguration::ctor()
     connect(m_buildDirManager.get(), &BuildDirManager::dataAvailable,
             this, [this, project]() {
         project->updateProjectData(this);
+        emit enabledChanged();
         emit dataAvailable();
     });
     connect(m_buildDirManager.get(), &BuildDirManager::errorOccured,
@@ -155,6 +156,7 @@ void CMakeBuildConfiguration::ctor()
     connect(m_buildDirManager.get(), &BuildDirManager::configurationStarted,
             this, [this, project]() {
         project->handleParsingStarted();
+        emit enabledChanged();
         emit parsingStarted();
     });
 
@@ -166,6 +168,7 @@ void CMakeBuildConfiguration::ctor()
 
 void CMakeBuildConfiguration::maybeForceReparse()
 {
+    clearError();
     m_buildDirManager->maybeForceReparse();
 }
 
@@ -194,6 +197,7 @@ void CMakeBuildConfiguration::runCMake()
     if (!m_buildDirManager || m_buildDirManager->isParsing())
         return;
 
+    clearError();
     m_buildDirManager->forceReparse();
 }
 
@@ -339,6 +343,14 @@ void CMakeBuildConfiguration::setCurrentCMakeConfiguration(const QList<ConfigMod
     m_buildDirManager->forceReparse();
 }
 
+void CMakeBuildConfiguration::clearError()
+{
+    if (!m_error.isEmpty()) {
+        m_error.clear();
+        emit enabledChanged();
+    }
+}
+
 void CMakeBuildConfiguration::emitBuildTypeChanged()
 {
     emit buildTypeChanged();
@@ -388,10 +400,11 @@ CMakeConfig CMakeBuildConfiguration::cmakeConfiguration() const
 
 void CMakeBuildConfiguration::setError(const QString &message)
 {
-    if (m_error != message) {
-        emit enabledChanged();
+    QString oldMessage = m_error;
+    if (m_error != message)
         m_error = message;
-    }
+    if (oldMessage.isEmpty() && !message.isEmpty())
+        emit enabledChanged();
     emit errorOccured(m_error);
 }
 

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.h

@@ -112,6 +112,7 @@ private:
     QList<ConfigModel::DataItem> completeCMakeConfiguration() const;
     void setCurrentCMakeConfiguration(const QList<ConfigModel::DataItem> &items);
 
+    void clearError();
     void setError(const QString &message);
     void setWarning(const QString &message);