debugger: make freshly inserted watchers immediately visble

Even if no engine is running.

src/plugins/debugger/debuggercore.h

@@ -77,6 +77,7 @@ public:
     virtual QVariant configValue(const QString &name) const = 0;
     virtual void setConfigValue(const QString &name, const QVariant &value) = 0;
     virtual void updateState(DebuggerEngine *engine) = 0;
+    virtual void updateWatchersWindow() = 0;
     virtual void showQtDumperLibraryWarning(const QString &details) = 0;
     virtual QIcon locationMarkIcon() const = 0;
     virtual const CPlusPlus::Snapshot &cppCodeModelSnapshot() const = 0;

src/plugins/debugger/debuggerplugin.cpp

@@ -1030,6 +1030,7 @@ public slots:
     DebuggerState state() const { return m_state; }
 
     void updateState(DebuggerEngine *engine);
+    void updateWatchersWindow();
     void onCurrentProjectChanged(ProjectExplorer::Project *project);
 
     void gotoLocation(const QString &file, int line, bool setMarker);
@@ -1919,8 +1920,8 @@ bool DebuggerPluginPrivate::initialize(const QStringList &arguments,
         SLOT(aboutToSaveSession()));
     connect(sessionManager(), SIGNAL(aboutToUnloadSession()),
         SLOT(aboutToUnloadSession()));
-    connect(ProjectExplorer::ProjectExplorerPlugin::instance(), SIGNAL(updateRunActions()),
-            this, SLOT(updateDebugActions()));
+    connect(ProjectExplorerPlugin::instance(), SIGNAL(updateRunActions()),
+        SLOT(updateDebugActions()));
 
     // EditorManager
     QObject *editorManager = core->editorManager();
@@ -2039,12 +2040,10 @@ void DebuggerPluginPrivate::languagesChanged(const DebuggerLanguages &languages)
 
 void DebuggerPluginPrivate::debugProject()
 {
-    Project *pro = ProjectExplorer::ProjectExplorerPlugin::instance()->startupProject();
-    if (!pro)
-        return;
-
-    ProjectExplorer::ProjectExplorerPlugin::instance()->runProject(pro, Constants::DEBUGMODE);
- }
+    ProjectExplorerPlugin *pe = ProjectExplorerPlugin::instance();
+    if (Project *pro = pe->startupProject())
+        pe->runProject(pro, Constants::DEBUGMODE);
+}
 
 void DebuggerPluginPrivate::startExternalApplication()
 {
@@ -2073,7 +2072,7 @@ void DebuggerPluginPrivate::startExternalApplication()
         sp.processArgs = dlg.executableArguments();
     // Fixme: 1 of 3 testing hacks.
     if (sp.processArgs.startsWith(__("@tcf@ ")) || sp.processArgs.startsWith(__("@sym@ ")))
-        sp.toolChainType = ProjectExplorer::ToolChain_RVCT_ARMV5;
+        sp.toolChainType = ToolChain_RVCT_ARMV5;
 
 
     if (RunControl *rc = m_debuggerRunControlFactory->create(sp))
@@ -2145,7 +2144,7 @@ void DebuggerPluginPrivate::startRemoteCdbSession()
 {
     const QString connectionKey = _("CdbRemoteConnection");
     DebuggerStartParameters sp;
-    sp.toolChainType = ProjectExplorer::ToolChain_MSVC;
+    sp.toolChainType = ToolChain_MSVC;
     sp.startMode = AttachToRemote;
     StartRemoteCdbDialog dlg(mainWindow());
     QString previousConnection = configValue(connectionKey).toString();
@@ -2211,7 +2210,7 @@ void DebuggerPluginPrivate::startRemoteApplication()
     sp.displayName = dlg.localExecutable();
     sp.debuggerCommand = dlg.debugger(); // Override toolchain-detection.
     if (!sp.debuggerCommand.isEmpty())
-        sp.toolChainType = ProjectExplorer::ToolChain_INVALID;
+        sp.toolChainType = ToolChain_INVALID;
     sp.startMode = AttachToRemote;
     sp.useServerStartScript = dlg.useServerStartScript();
     sp.serverStartScript = dlg.serverStartScript();
@@ -2678,6 +2677,14 @@ void DebuggerPluginPrivate::setInitialState()
     //emit m_plugin->stateChanged(m_state);
 }
 
+void DebuggerPluginPrivate::updateWatchersWindow()
+{
+    m_watchersWindow->setVisible(
+        m_watchersWindow->model()->rowCount(QModelIndex()) > 0);
+    m_returnWindow->setVisible(
+        m_returnWindow->model()->rowCount(QModelIndex()) > 0);
+}
+
 void DebuggerPluginPrivate::updateState(DebuggerEngine *engine)
 {
     QTC_ASSERT(engine, return);
@@ -2687,10 +2694,7 @@ void DebuggerPluginPrivate::updateState(DebuggerEngine *engine)
 
     m_threadBox->setCurrentIndex(engine->threadsHandler()->currentThread());
 
-    m_watchersWindow->setVisible(
-        m_watchersWindow->model()->rowCount(QModelIndex()) > 0);
-    m_returnWindow->setVisible(
-        m_returnWindow->model()->rowCount(QModelIndex()) > 0);
+    updateWatchersWindow();
 
     //m_plugin->showMessage(QString("PLUGIN SET STATE: ")
     //    + DebuggerEngine::stateName(engine->state()), LogStatus);
@@ -2820,9 +2824,9 @@ void DebuggerPluginPrivate::updateState(DebuggerEngine *engine)
 
 void DebuggerPluginPrivate::updateDebugActions()
 {
-    ProjectExplorer::ProjectExplorerPlugin *peplugin = ProjectExplorer::ProjectExplorerPlugin::instance();
-    Project *project = peplugin->startupProject();
-    m_debugAction->setEnabled(peplugin->canRun(project, Constants::DEBUGMODE));
+    ProjectExplorerPlugin *pe = ProjectExplorerPlugin::instance();
+    Project *project = pe->startupProject();
+    m_debugAction->setEnabled(pe->canRun(project, Constants::DEBUGMODE));
 }
 
 void DebuggerPluginPrivate::gotoLocation(const QString &file, int line, bool setMarker)

src/plugins/debugger/watchhandler.cpp

@@ -56,7 +56,7 @@
 #include <ctype.h>
 #include <utils/qtcassert.h>
 
-// creates debug output for accesses to the model
+// Creates debug output for accesses to the model.
 //#define DEBUG_MODEL 1
 
 #if DEBUG_MODEL
@@ -1333,7 +1333,6 @@ QByteArray WatchHandler::watcherName(const QByteArray &exp)
 void WatchHandler::watchExpression(const QString &exp)
 {
     QTC_ASSERT(m_engine, return);
-    QTC_ASSERT(m_engine->debuggerCapabilities() & AddWatcherCapability, return);
     // Do not insert multiple placeholders.
     if (exp.isEmpty() && m_watcherNames.contains(QByteArray()))
         return;
@@ -1346,10 +1345,16 @@ void WatchHandler::watchExpression(const QString &exp)
     if (exp.isEmpty())
         data.setAllUnneeded();
     data.iname = watcherName(data.exp);
-    if (m_engine->isSynchronous())
+    if (m_engine->state() == DebuggerNotReady) {
+        data.setAllUnneeded();
+        data.setValue(" ");
+        data.setHasChildren(false);
+        insertData(data);
+    } else if (m_engine->isSynchronous()) {
         m_engine->updateWatchData(data);
-    else
+    } else {
         insertData(data);
+    }
     updateWatchersWindow();
     saveWatchers();
     emitAllChanged();
@@ -1468,7 +1473,7 @@ void WatchHandler::removeWatchExpression(const QString &exp0)
 void WatchHandler::updateWatchersWindow()
 {
     // Force show/hide of watchers and return view.
-    debuggerCore()->updateState(m_engine);
+    debuggerCore()->updateWatchersWindow();
 }
 
 void WatchHandler::updateWatchers()