RemoteLinux: Make run configuration's isEnabled() function smarter.

We move some checks over from the factory's canRun() method.
A a result, the disabled "run" button will show a more informative
tool tip.

Change-Id: I88e92c9221907ccfdc296fe13b8e8788cec865c2
Reviewed-on: http://codereview.qt.nokia.com/241
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

src/plugins/remotelinux/maemorunconfiguration.cpp

@@ -43,10 +43,15 @@
 #include "qt4maemotarget.h"
 #include "maemoqtversion.h"
 
+#include <analyzerbase/analyzerconstants.h>
+
 #include <coreplugin/icore.h>
 #include <coreplugin/messagemanager.h>
 
+#include <debugger/debuggerconstants.h>
+
 #include <projectexplorer/projectexplorer.h>
+#include <projectexplorer/projectexplorerconstants.h>
 #include <projectexplorer/session.h>
 
 #include <qtsupport/qtoutputformatter.h>
@@ -131,14 +136,33 @@ Qt4BuildConfiguration *MaemoRunConfiguration::activeQt4BuildConfiguration() cons
 
 bool MaemoRunConfiguration::isEnabled() const
 {
-    return m_validParse;
+    if (!m_validParse) {
+        m_disabledReason = tr("The .pro file could not be parsed/");
+        return false;
+    }
+    if (!deviceConfig()) {
+        m_disabledReason = tr("No device configuration set.");
+        return false;
+    }
+    if (!activeQt4BuildConfiguration()) {
+        m_disabledReason = tr("No active build configuration.");
+        return false;
+    }
+    if (remoteExecutableFilePath().isEmpty()) {
+        m_disabledReason = tr("Don't know what to run.");
+        return false;
+    }
+    if (!hasEnoughFreePorts(ProjectExplorer::Constants::RUNMODE)) {
+        m_disabledReason = tr("Not enough free ports on the device.");
+        return false;
+    }
+    m_disabledReason.clear();
+    return true;
 }
 
 QString MaemoRunConfiguration::disabledReason() const
 {
-    if (!m_validParse)
-        return tr("The .pro file could not be parsed");
-    return QString();
+    return m_disabledReason;
 }
 
 QWidget *MaemoRunConfiguration::createConfigurationWidget()
@@ -345,6 +369,23 @@ int MaemoRunConfiguration::portsUsedByDebuggers() const
     }
 }
 
+bool MaemoRunConfiguration::hasEnoughFreePorts(const QString &mode) const
+{
+    const int freePortCount = freePorts().count();
+    const AbstractQt4MaemoTarget * const maemoTarget
+        = qobject_cast<AbstractQt4MaemoTarget *>(target());
+    const bool remoteMountsAllowed = maemoTarget && maemoTarget->allowsRemoteMounts();
+    if (remoteMountsAllowed && freePortCount == 0)
+        return false;
+    const int mountDirCount = remoteMountsAllowed
+        ? remoteMounts()->validMountSpecificationCount() : 0;
+    if (mode == Debugger::Constants::DEBUGMODE)
+        return freePortCount >= mountDirCount + portsUsedByDebuggers();
+    if (mode == ProjectExplorer::Constants::RUNMODE || Analyzer::Constants::MODE_ANALYZE)
+        return freePortCount >= mountDirCount;
+    return false;
+}
+
 void MaemoRunConfiguration::updateDeviceConfigurations()
 {
     emit deviceConfigurationChanged(target());

src/plugins/remotelinux/maemorunconfiguration.h

@@ -122,6 +122,7 @@ public:
     void setSystemEnvironment(const Utils::Environment &environment);
 
     int portsUsedByDebuggers() const;
+    bool hasEnoughFreePorts(const QString &mode) const;
 
     QString proFilePath() const;
 
@@ -160,6 +161,7 @@ private:
     Utils::Environment m_systemEnvironment;
     QList<Utils::EnvironmentItem> m_userEnvironmentChanges;
     bool m_validParse;
+    mutable QString m_disabledReason;
 };
 
     } // namespace Internal

src/plugins/remotelinux/maemorunfactories.cpp

@@ -162,29 +162,9 @@ bool MaemoRunControlFactory::canRun(RunConfiguration *runConfiguration,
 {
     const MaemoRunConfiguration * const maemoRunConfig
         = qobject_cast<MaemoRunConfiguration *>(runConfiguration);
-    if (!maemoRunConfig
-        || !maemoRunConfig->deviceConfig()
-        || !maemoRunConfig->activeQt4BuildConfiguration()
-        || maemoRunConfig->remoteExecutableFilePath().isEmpty())
+    if (!maemoRunConfig || !maemoRunConfig->isEnabled())
         return false;
-    const int freePortCount = maemoRunConfig->freePorts().count();
-
-    const AbstractQt4MaemoTarget * const maemoTarget
-        = qobject_cast<AbstractQt4MaemoTarget *>(maemoRunConfig->target());
-    const bool remoteMountsAllowed
-        = maemoTarget && maemoTarget->allowsRemoteMounts();
-    if (remoteMountsAllowed && freePortCount == 0)
-        return false;
-    const int mountDirCount
-        = remoteMountsAllowed
-            ? maemoRunConfig->remoteMounts()->validMountSpecificationCount()
-            : 0;
-    if (mode == Debugger::Constants::DEBUGMODE)
-        return freePortCount >= mountDirCount + maemoRunConfig->portsUsedByDebuggers();
-    if (mode == ProjectExplorer::Constants::RUNMODE
-        || Analyzer::Constants::MODE_ANALYZE)
-        return freePortCount >= mountDirCount;
-    return false;
+    return maemoRunConfig->hasEnoughFreePorts(mode);
 }
 
 RunControl* MaemoRunControlFactory::create(RunConfiguration *runConfig,