Make use of the "issues" pane when errors occur during analyzing.

They can otherwise easily get lost in the Application output pane.
Policy is as follows:
    - Failure to analyze a specific file is considered a warning.
    - If no file could be successfully analyzed, we add an
      error and pop up the issues pane.
This approach is neither too noisy nor too quiet.

Change-Id: Ifc577a215006a6a565eee7de5099bd690427f7de
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.cpp

@@ -23,6 +23,7 @@
 #include "clangstaticanalyzersettings.h"
 #include "clangstaticanalyzerutils.h"
 
+#include <analyzerbase/analyzerconstants.h>
 #include <analyzerbase/analyzermanager.h>
 
 #include <clangcodemodel/clangutils.h>
@@ -37,6 +38,7 @@
 #include <projectexplorer/kitinformation.h>
 #include <projectexplorer/project.h>
 #include <projectexplorer/target.h>
+#include <projectexplorer/taskhub.h>
 
 #include <utils/algorithm.h>
 
@@ -51,6 +53,14 @@ static Q_LOGGING_CATEGORY(LOG, "qtc.clangstaticanalyzer.runcontrol")
 namespace ClangStaticAnalyzer {
 namespace Internal {
 
+static void logToIssuesPane(Task::TaskType type, const QString &message)
+{
+    TaskHub::addTask(type, message, Analyzer::Constants::ANALYZERTASK_ID);
+    if (type == Task::Error)
+        TaskHub::requestPopup();
+}
+
+
 ClangStaticAnalyzerRunControl::ClangStaticAnalyzerRunControl(
             const Analyzer::AnalyzerStartParameters &startParams,
             ProjectExplorer::RunConfiguration *runConfiguration,
@@ -191,9 +201,10 @@ bool ClangStaticAnalyzerRunControl::startEngine()
     const QString executable
             = clangExecutableFromSettings(m_toolchainType, &isValidClangExecutable);
     if (!isValidClangExecutable) {
-        emit appendMessage(tr("Clang Static Analyzer: Invalid executable \"%1\", stop.")
+        const QString errorMessage = tr("Clang Static Analyzer: Invalid executable \"%1\", stop.")
-                            .arg(executable) + QLatin1Char('\n'),
+                .arg(executable);
-                           Utils::ErrorMessageFormat);
+        appendMessage(errorMessage + QLatin1Char('\n'), Utils::ErrorMessageFormat);
+        logToIssuesPane(Task::Error, errorMessage);
         emit finished();
         return false;
     }
@@ -203,8 +214,10 @@ bool ClangStaticAnalyzerRunControl::startEngine()
     QTemporaryDir temporaryDir(QDir::tempPath() + QLatin1String("/qtc-clangstaticanalyzer-XXXXXX"));
     temporaryDir.setAutoRemove(false);
     if (!temporaryDir.isValid()) {
-        emit appendMessage(tr("Clang Static Analyzer: Failed to create temporary dir, stop.")
+        const QString errorMessage
-                           + QLatin1Char('\n'), Utils::ErrorMessageFormat);
+                = tr("Clang Static Analyzer: Failed to create temporary dir, stop.");
+        appendMessage(errorMessage + QLatin1Char('\n'), Utils::ErrorMessageFormat);
+        logToIssuesPane(Task::Error, errorMessage);
         emit finished();
         return false;
     }
@@ -273,6 +286,10 @@ void ClangStaticAnalyzerRunControl::analyzeNextFile()
                                 .arg(m_filesNotAnalyzed)
                              + QLatin1Char('\n'),
                           Utils::NormalMessageFormat);
+            if (m_filesAnalyzed == 0 && m_filesNotAnalyzed != 0) {
+                logToIssuesPane(Task::Error,
+                                tr("Clang Static Analyzer: Failed to analyze any files."));
+            }
             m_progress.reportFinished();
             emit finished();
         }
@@ -336,7 +353,8 @@ void ClangStaticAnalyzerRunControl::onRunnerFinishedWithFailure(const QString &e
                   + QLatin1Char('\n')
                   , Utils::StdErrFormat);
     appendMessage(errorDetails, Utils::StdErrFormat);
-
+    logToIssuesPane(Task::Warning, errorMessage);
+    logToIssuesPane(Task::Warning, errorDetails);
     handleFinished();
 }