diff --git a/share/qtcreator/debugger/lldbbridge.py b/share/qtcreator/debugger/lldbbridge.py
index aa6af7b508d..98d581543c5 100644
--- a/share/qtcreator/debugger/lldbbridge.py
+++ b/share/qtcreator/debugger/lldbbridge.py
@@ -1179,9 +1179,11 @@ class Dumper(DumperBase):
         shadowed = {}
         ids = {} # Filter out duplicates entries at the same address.
 
-        if isPartial:
-            values = [frame.FindVariable(partialVariable)]
-        else:
+        # FIXME: Implement shortcut for partial updates.
+        #if isPartial:
+        #    values = [frame.FindVariable(partialVariable)]
+        #else:
+        if True:
             values = list(frame.GetVariables(True, True, False, False))
             values.reverse() # To get shadowed vars numbered backwards.
 
diff --git a/src/plugins/debugger/cdb/cdbengine.cpp b/src/plugins/debugger/cdb/cdbengine.cpp
index 344a500a409..024bea6ac74 100644
--- a/src/plugins/debugger/cdb/cdbengine.cpp
+++ b/src/plugins/debugger/cdb/cdbengine.cpp
@@ -414,7 +414,7 @@ void CdbEngine::syncVerboseLog(bool verboseLog)
     postCommand(m_verboseLog ? QByteArray("!sym noisy") : QByteArray("!sym quiet"), 0);
 }
 
-bool CdbEngine::setToolTipExpression(const DebuggerToolTipContext &context)
+bool CdbEngine::canHandleToolTip(const DebuggerToolTipContext &context) const
 {
     Q_UNUSED(context);
     // Tooltips matching local variables are already handled in the
diff --git a/src/plugins/debugger/cdb/cdbengine.h b/src/plugins/debugger/cdb/cdbengine.h
index 0827982cd34..bc2133f6826 100644
--- a/src/plugins/debugger/cdb/cdbengine.h
+++ b/src/plugins/debugger/cdb/cdbengine.h
@@ -78,7 +78,7 @@ public:
 
     // Factory function that returns 0 if the debug engine library cannot be found.
 
-    virtual bool setToolTipExpression(const DebuggerToolTipContext &context);
+    virtual bool canHandleToolTip(const DebuggerToolTipContext &context) const;
 
     virtual DebuggerEngine *cppEngine() { return this; }
 
diff --git a/src/plugins/debugger/debuggerengine.cpp b/src/plugins/debugger/debuggerengine.cpp
index 15b70ed9bed..7a35cd7aa2b 100644
--- a/src/plugins/debugger/debuggerengine.cpp
+++ b/src/plugins/debugger/debuggerengine.cpp
@@ -98,6 +98,17 @@ enum { debug = 0 };
 //
 ///////////////////////////////////////////////////////////////////////
 
+DebuggerRunParameters::DebuggerRunParameters()
+    : cppEngineType(NoEngineType),
+      isSnapshot(false),
+      testCase(0)
+{}
+
+void DebuggerRunParameters::initialize(const DebuggerStartParameters &sp)
+{
+    DebuggerStartParameters::operator=(sp);
+}
+
 // VariableManager Prefix
 const char PrefixDebugExecutable[]  = "DebuggedExecutable";
 
@@ -402,6 +413,10 @@ void DebuggerEngine::frameDown()
     activateFrame(qMax(currentIndex - 1, 0));
 }
 
+void DebuggerEngine::doUpdateLocals(const UpdateParameters &)
+{
+}
+
 void DebuggerEngine::setTargetState(DebuggerState state)
 {
     d->m_targetState = state;
@@ -1308,6 +1323,11 @@ DebuggerEngine *DebuggerEngine::masterEngine() const
     return d->m_masterEngine;
 }
 
+bool DebuggerEngine::canDisplayTooltip() const
+{
+    return state() == InferiorStopOk;
+}
+
 QString DebuggerEngine::toFileInProject(const QUrl &fileUrl)
 {
     // make sure file finder is properly initialized
@@ -1449,12 +1469,7 @@ Terminal *DebuggerEngine::terminal() const
     return &d->m_terminal;
 }
 
-bool DebuggerEngine::setToolTipExpression(const DebuggerToolTipContext &)
-{
-    return false;
-}
-
-void DebuggerEngine::watchDataSelected(const QByteArray &)
+void DebuggerEngine::selectWatchData(const QByteArray &)
 {
 }
 
@@ -1541,6 +1556,13 @@ void DebuggerEngine::createSnapshot()
 {
 }
 
+void DebuggerEngine::updateLocals()
+{
+    watchHandler()->resetValueCache();
+    watchHandler()->notifyUpdateStarted();
+    doUpdateLocals(UpdateParameters());
+}
+
 void DebuggerEngine::updateAll()
 {
 }
@@ -1983,15 +2005,16 @@ void DebuggerEngine::updateLocalsView(const GdbMi &all)
         emit stackFrameCompleted();
 }
 
-DebuggerRunParameters::DebuggerRunParameters()
-    : cppEngineType(NoEngineType),
-      isSnapshot(false),
-      testCase(0)
-{}
-
-void DebuggerRunParameters::initialize(const DebuggerStartParameters &sp)
+bool DebuggerEngine::canHandleToolTip(const DebuggerToolTipContext &context) const
 {
-    DebuggerStartParameters::operator=(sp);
+    return state() == InferiorStopOk && context.isCppEditor;
+}
+
+void DebuggerEngine::updateWatchData(const QByteArray &iname)
+{
+    UpdateParameters params;
+    params.partialVariable = iname;
+    doUpdateLocals(params);
 }
 
 } // namespace Internal
diff --git a/src/plugins/debugger/debuggerengine.h b/src/plugins/debugger/debuggerengine.h
index e6b5c10712f..5845428f287 100644
--- a/src/plugins/debugger/debuggerengine.h
+++ b/src/plugins/debugger/debuggerengine.h
@@ -108,6 +108,14 @@ public:
     int testCase;
 };
 
+class UpdateParameters
+{
+public:
+    UpdateParameters() {}
+
+    QByteArray partialVariable;
+};
+
 class Location
 {
 public:
@@ -167,10 +175,9 @@ public:
     const DebuggerRunParameters &runParameters() const;
     DebuggerRunParameters &runParameters();
 
-    virtual bool setToolTipExpression(const Internal::DebuggerToolTipContext &);
-
-    virtual void updateWatchItem(WatchItem *) {}
-    virtual void watchDataSelected(const QByteArray &iname);
+    virtual bool canHandleToolTip(const DebuggerToolTipContext &) const;
+    virtual void updateWatchData(const QByteArray &iname);
+    virtual void selectWatchData(const QByteArray &iname);
 
     virtual void startDebugger(DebuggerRunControl *runControl);
 
@@ -218,6 +225,7 @@ public:
 
     virtual void createSnapshot();
     virtual void updateAll();
+    virtual void updateLocals();
 
     virtual bool stateAcceptsBreakpointChanges() const { return true; }
     virtual void attemptBreakpointSynchronization();
@@ -282,7 +290,7 @@ public:
     DebuggerEngine *masterEngine() const;
     virtual DebuggerEngine *cppEngine() { return 0; }
 
-    virtual bool canDisplayTooltip() const { return state() == InferiorStopOk; }
+    virtual bool canDisplayTooltip() const;
 
     virtual void notifyInferiorIll();
 
@@ -377,6 +385,8 @@ protected:
     virtual void frameUp();
     virtual void frameDown();
 
+    virtual void doUpdateLocals(const UpdateParameters &params);
+
     void setTargetState(DebuggerState state);
     void setMasterEngine(DebuggerEngine *masterEngine);
 
@@ -431,6 +441,7 @@ DebuggerRunControl *createAndScheduleRun(const DebuggerRunParameters &rp);
 } // namespace Internal
 } // namespace Debugger
 
+Q_DECLARE_METATYPE(Debugger::Internal::UpdateParameters)
 Q_DECLARE_METATYPE(Debugger::Internal::ContextData)
 
 #endif // DEBUGGER_DEBUGGERENGINE_H
diff --git a/src/plugins/debugger/debuggertooltipmanager.cpp b/src/plugins/debugger/debuggertooltipmanager.cpp
index 022602f2ed9..07656201092 100644
--- a/src/plugins/debugger/debuggertooltipmanager.cpp
+++ b/src/plugins/debugger/debuggertooltipmanager.cpp
@@ -1221,8 +1221,9 @@ static void slotTooltipOverrideRequested
             tooltip->context.mousePosition = point;
             m_tooltips.push_back(tooltip);
             tooltip->setState(PendingUnshown);
-            *handled = engine->setToolTipExpression(context);
-            if (!*handled) {
+            if (engine->canHandleToolTip(context)) {
+                engine->updateWatchData(context.iname);
+            } else {
                 ToolTip::show(point, DebuggerToolTipManager::tr("Expression too complex"),
                               Internal::mainWindow());
                 tooltip->destroy();
diff --git a/src/plugins/debugger/gdb/gdbengine.cpp b/src/plugins/debugger/gdb/gdbengine.cpp
index 4a9a3bbeeb5..921861e9d30 100644
--- a/src/plugins/debugger/gdb/gdbengine.cpp
+++ b/src/plugins/debugger/gdb/gdbengine.cpp
@@ -3693,24 +3693,6 @@ void GdbEngine::handleRegisterListValues(const DebuggerResponse &response)
 }
 
 
-//////////////////////////////////////////////////////////////////////
-//
-// Tooltip specific stuff
-//
-//////////////////////////////////////////////////////////////////////
-
-bool GdbEngine::setToolTipExpression(const DebuggerToolTipContext &context)
-{
-    if (state() != InferiorStopOk || !context.isCppEditor)
-        return false;
-
-    UpdateParameters params;
-    params.partialVariable = context.iname;
-    doUpdateLocals(params);
-    return true;
-}
-
-
 //////////////////////////////////////////////////////////////////////
 //
 // Watch specific stuff
@@ -3723,13 +3705,6 @@ void GdbEngine::reloadLocals()
     updateLocals();
 }
 
-void GdbEngine::updateWatchItem(WatchItem *item)
-{
-    UpdateParameters params;
-    params.partialVariable = item->iname;
-    doUpdateLocals(params);
-}
-
 void GdbEngine::handleVarAssign(const DebuggerResponse &)
 {
     // Everything might have changed, force re-evaluation.
@@ -3737,13 +3712,6 @@ void GdbEngine::handleVarAssign(const DebuggerResponse &)
     updateLocals();
 }
 
-void GdbEngine::updateLocals()
-{
-    watchHandler()->resetValueCache();
-    watchHandler()->notifyUpdateStarted();
-    doUpdateLocals(UpdateParameters());
-}
-
 void GdbEngine::assignValueInDebugger(WatchItem *item,
     const QString &expression, const QVariant &value)
 {
@@ -4744,14 +4712,14 @@ void GdbEngine::doUpdateLocals(const UpdateParameters &params)
     cmd.arg("resultvarname", m_resultVarName);
     cmd.arg("partialVariable", params.partialVariable);
     cmd.flags = Discardable;
-    cmd.callback = [this, params](const DebuggerResponse &r) { handleStackFramePython(r); };
+    cmd.callback = [this, params](const DebuggerResponse &r) { handleStackFrame(r); };
     runCommand(cmd);
 
     cmd.arg("passExceptions", true);
     m_lastDebuggableCommand = cmd;
 }
 
-void GdbEngine::handleStackFramePython(const DebuggerResponse &response)
+void GdbEngine::handleStackFrame(const DebuggerResponse &response)
 {
     watchHandler()->notifyUpdateFinished();
     if (response.resultClass == ResultDone) {
diff --git a/src/plugins/debugger/gdb/gdbengine.h b/src/plugins/debugger/gdb/gdbengine.h
index 15450ced54d..6d9ef6be7ba 100644
--- a/src/plugins/debugger/gdb/gdbengine.h
+++ b/src/plugins/debugger/gdb/gdbengine.h
@@ -381,7 +381,6 @@ protected:
     //
     // Watch specific stuff
     //
-    virtual bool setToolTipExpression(const DebuggerToolTipContext &);
     virtual void assignValueInDebugger(WatchItem *item,
         const QString &expr, const QVariant &value);
 
@@ -396,7 +395,6 @@ protected:
     virtual void watchPoint(const QPoint &);
     void handleWatchPoint(const DebuggerResponse &response);
 
-    void updateWatchItem(WatchItem *item);
     void showToolTip();
 
     void handleVarAssign(const DebuggerResponse &response);
@@ -407,9 +405,8 @@ protected:
     Q_SLOT void createFullBacktrace();
     void handleCreateFullBacktrace(const DebuggerResponse &response);
 
-    void updateLocals();
-        void doUpdateLocals(const UpdateParameters &parameters);
-        void handleStackFramePython(const DebuggerResponse &response);
+    void doUpdateLocals(const UpdateParameters &parameters);
+    void handleStackFrame(const DebuggerResponse &response);
 
     void setLocals(const QList<GdbMi> &locals);
 
diff --git a/src/plugins/debugger/lldb/lldbengine.cpp b/src/plugins/debugger/lldb/lldbengine.cpp
index 9796cb4c645..664758e2e3f 100644
--- a/src/plugins/debugger/lldb/lldbengine.cpp
+++ b/src/plugins/debugger/lldb/lldbengine.cpp
@@ -814,19 +814,9 @@ void LldbEngine::refreshSymbols(const GdbMi &symbols)
 //
 //////////////////////////////////////////////////////////////////////
 
-bool LldbEngine::setToolTipExpression(const DebuggerToolTipContext &context)
+bool LldbEngine::canHandleToolTip(const DebuggerToolTipContext &context) const
 {
-    if (state() != InferiorStopOk || !context.isCppEditor) {
-        //qDebug() << "SUPPRESSING DEBUGGER TOOLTIP, INFERIOR NOT STOPPED "
-        // " OR NOT A CPPEDITOR";
-        return false;
-    }
-
-    UpdateParameters params;
-    params.partialVariable = context.iname;
-    doUpdateLocals(params);
-
-    return true;
+   return state() == InferiorStopOk && context.isCppEditor;
 }
 
 void LldbEngine::updateAll()
@@ -867,19 +857,7 @@ void LldbEngine::assignValueInDebugger(WatchItem *,
     runCommand(cmd);
 }
 
-void LldbEngine::updateWatchItem(WatchItem *)
-{
-    doUpdateLocals(UpdateParameters());
-}
-
-void LldbEngine::updateLocals()
-{
-    watchHandler()->resetValueCache();
-    watchHandler()->notifyUpdateStarted();
-    doUpdateLocals(UpdateParameters());
-}
-
-void LldbEngine::doUpdateLocals(UpdateParameters params)
+void LldbEngine::doUpdateLocals(const UpdateParameters &params)
 {
     if (stackHandler()->stackSize() == 0) {
         showMessage(_("SKIPPING LOCALS DUE TO EMPTY STACK"));
diff --git a/src/plugins/debugger/lldb/lldbengine.h b/src/plugins/debugger/lldb/lldbengine.h
index 92a4dd81117..b924c1af9d6 100644
--- a/src/plugins/debugger/lldb/lldbengine.h
+++ b/src/plugins/debugger/lldb/lldbengine.h
@@ -87,7 +87,7 @@ private:
     void shutdownEngine();
     void abortDebugger();
 
-    bool setToolTipExpression(const DebuggerToolTipContext &);
+    bool canHandleToolTip(const DebuggerToolTipContext &) const;
 
     void continueInferior();
     void interruptInferior();
@@ -122,7 +122,6 @@ private:
 
     bool supportsThreads() const { return true; }
     bool isSynchronous() const { return true; }
-    void updateWatchItem(WatchItem *item);
     void setRegisterValue(const QByteArray &name, const QString &value);
 
     void fetchMemory(Internal::MemoryAgent *, QObject *, quint64 addr, quint64 length);
@@ -142,9 +141,8 @@ private:
     void readLldbStandardError();
     void handleResponse(const QByteArray &data);
     void updateAll();
-    void updateLocals();
     void createFullBacktrace();
-    void doUpdateLocals(UpdateParameters params);
+    void doUpdateLocals(const UpdateParameters &params);
     void handleContinuation(const GdbMi &data);
 
     void refreshAll(const GdbMi &all);
diff --git a/src/plugins/debugger/pdb/pdbengine.cpp b/src/plugins/debugger/pdb/pdbengine.cpp
index 8f03345bd2d..81b3c375a79 100644
--- a/src/plugins/debugger/pdb/pdbengine.cpp
+++ b/src/plugins/debugger/pdb/pdbengine.cpp
@@ -378,16 +378,9 @@ void PdbEngine::refreshSymbols(const GdbMi &symbols)
     Internal::showModuleSymbols(moduleName, syms);
 }
 
-bool PdbEngine::setToolTipExpression(const DebuggerToolTipContext &ctx)
+bool PdbEngine::canHandleToolTip(const DebuggerToolTipContext &) const
 {
-    if (state() != InferiorStopOk)
-        return false;
-
-    DebuggerCommand cmd("evaluateTooltip");
-    ctx.appendFormatRequest(&cmd);
-    watchHandler()->appendFormatRequests(&cmd);
-    runCommand(cmd);
-    return true;
+    return state() == InferiorStopOk;
 }
 
 void PdbEngine::assignValueInDebugger(WatchItem *, const QString &expression, const QVariant &value)
@@ -401,9 +394,9 @@ void PdbEngine::assignValueInDebugger(WatchItem *, const QString &expression, co
     updateLocals();
 }
 
-void PdbEngine::updateWatchItem(WatchItem *item)
+void PdbEngine::updateWatchData(const QByteArray &iname)
 {
-    Q_UNUSED(item);
+    Q_UNUSED(iname);
     updateAll();
 }
 
diff --git a/src/plugins/debugger/pdb/pdbengine.h b/src/plugins/debugger/pdb/pdbengine.h
index 2c7ef35ee19..bd16495fbcf 100644
--- a/src/plugins/debugger/pdb/pdbengine.h
+++ b/src/plugins/debugger/pdb/pdbengine.h
@@ -66,7 +66,7 @@ private:
     void shutdownInferior();
     void shutdownEngine();
 
-    bool setToolTipExpression(const DebuggerToolTipContext &);
+    bool canHandleToolTip(const DebuggerToolTipContext &) const;
 
     void continueInferior();
     void interruptInferior();
@@ -96,7 +96,7 @@ private:
 
     bool supportsThreads() const { return true; }
     bool isSynchronous() const { return true; }
-    void updateWatchItem(WatchItem *item);
+    void updateWatchData(const QByteArray &iname);
 
     QString mainPythonFile() const;
     QString pythonInterpreter() const;
diff --git a/src/plugins/debugger/qml/qmlcppengine.cpp b/src/plugins/debugger/qml/qmlcppengine.cpp
index e95ebef02a6..baef8df87c6 100644
--- a/src/plugins/debugger/qml/qmlcppengine.cpp
+++ b/src/plugins/debugger/qml/qmlcppengine.cpp
@@ -102,29 +102,28 @@ bool QmlCppEngine::canDisplayTooltip() const
     return m_cppEngine->canDisplayTooltip() || m_qmlEngine->canDisplayTooltip();
 }
 
-bool QmlCppEngine::setToolTipExpression(const DebuggerToolTipContext &ctx)
+bool QmlCppEngine::canHandleToolTip(const DebuggerToolTipContext &ctx) const
 {
     bool success = false;
     if (ctx.isCppEditor)
-        success = m_cppEngine->setToolTipExpression(ctx);
+        success = m_cppEngine->canHandleToolTip(ctx);
     else
-        success = m_qmlEngine->setToolTipExpression(ctx);
+        success = m_qmlEngine->canHandleToolTip(ctx);
     return success;
 }
 
-void QmlCppEngine::updateWatchItem(WatchItem *item)
+void QmlCppEngine::updateWatchData(const QByteArray &iname)
 {
-    if (item->isInspect())
-        m_qmlEngine->updateWatchItem(item);
+    if (iname.startsWith("inspect."))
+        m_qmlEngine->updateWatchData(iname);
     else
-        m_activeEngine->updateWatchItem(item);
+        m_activeEngine->updateWatchData(iname);
 }
 
-void QmlCppEngine::watchDataSelected(const QByteArray &iname)
+void QmlCppEngine::selectWatchData(const QByteArray &iname)
 {
-    const WatchItem *item = watchHandler()->findItem(iname);
-    if (item && item->isInspect())
-        m_qmlEngine->watchDataSelected(iname);
+    if (iname.startsWith("inspect."))
+        m_qmlEngine->selectWatchData(iname);
 }
 
 void QmlCppEngine::watchPoint(const QPoint &point)
diff --git a/src/plugins/debugger/qml/qmlcppengine.h b/src/plugins/debugger/qml/qmlcppengine.h
index 8a2e321bcc2..dfb1f2b86b3 100644
--- a/src/plugins/debugger/qml/qmlcppengine.h
+++ b/src/plugins/debugger/qml/qmlcppengine.h
@@ -47,9 +47,9 @@ public:
     ~QmlCppEngine();
 
     bool canDisplayTooltip() const;
-    bool setToolTipExpression(const DebuggerToolTipContext &);
-    void updateWatchItem(WatchItem *item);
-    void watchDataSelected(const QByteArray &iname);
+    bool canHandleToolTip(const DebuggerToolTipContext &) const;
+    void updateWatchData(const QByteArray &iname);
+    void selectWatchData(const QByteArray &iname);
 
     void watchPoint(const QPoint &);
     void fetchMemory(MemoryAgent *, QObject *, quint64 addr, quint64 length);
diff --git a/src/plugins/debugger/qml/qmlengine.cpp b/src/plugins/debugger/qml/qmlengine.cpp
index ad4a0131689..70b51513818 100644
--- a/src/plugins/debugger/qml/qmlengine.cpp
+++ b/src/plugins/debugger/qml/qmlengine.cpp
@@ -973,12 +973,11 @@ void QmlEngine::requestModuleSymbols(const QString &moduleName)
 //
 //////////////////////////////////////////////////////////////////////
 
-bool QmlEngine::setToolTipExpression(const DebuggerToolTipContext &context)
+bool QmlEngine::canHandleToolTip(const DebuggerToolTipContext &) const
 {
     // This is processed by QML inspector, which has dependencies to
     // the qml js editor. Makes life easier.
     // FIXME: Except that there isn't any attached.
-    emit tooltipRequested(context);
     return true;
 }
 
@@ -999,11 +998,12 @@ void QmlEngine::assignValueInDebugger(WatchItem *item,
     }
 }
 
-void QmlEngine::updateWatchItem(WatchItem *item)
+void QmlEngine::updateWatchData(const QByteArray &iname)
 {
 //    qDebug() << "UPDATE WATCH DATA" << data.toString();
     //showStatusMessage(tr("Stopped."), 5000);
-
+    const WatchItem *item = watchHandler()->findItem(iname);
+    QTC_ASSERT(item, return);
     if (item->isInspect()) {
         m_inspectorAdapter.agent()->updateWatchData(*item);
     } else {
@@ -1018,7 +1018,7 @@ void QmlEngine::updateWatchItem(WatchItem *item)
     }
 }
 
-void QmlEngine::watchDataSelected(const QByteArray &iname)
+void QmlEngine::selectWatchData(const QByteArray &iname)
 {
     const WatchItem *item = watchHandler()->findItem(iname);
     if (item && item->isInspect())
diff --git a/src/plugins/debugger/qml/qmlengine.h b/src/plugins/debugger/qml/qmlengine.h
index 8fd88c1dcff..35517e9c4bc 100644
--- a/src/plugins/debugger/qml/qmlengine.h
+++ b/src/plugins/debugger/qml/qmlengine.h
@@ -89,9 +89,6 @@ public:
 
     void insertBreakpoint(Breakpoint bp);
 
-signals:
-    void tooltipRequested(const DebuggerToolTipContext &context);
-
 private slots:
     void disconnected();
     void documentUpdated(QmlJS::Document::Ptr doc);
@@ -128,7 +125,7 @@ private:
     void shutdownInferior();
     void shutdownEngine();
 
-    bool setToolTipExpression(const DebuggerToolTipContext &);
+    bool canHandleToolTip(const DebuggerToolTipContext &) const;
 
     void continueInferior();
     void interruptInferior();
@@ -157,8 +154,8 @@ private:
     void reloadFullStack() {}
 
     bool supportsThreads() const { return false; }
-    void updateWatchItem(WatchItem *item);
-    void watchDataSelected(const QByteArray &iname);
+    void updateWatchData(const QByteArray &iname);
+    void selectWatchData(const QByteArray &iname);
     void executeDebuggerCommand(const QString &command, DebuggerLanguages languages);
     bool evaluateScript(const QString &expression);
 
diff --git a/src/plugins/debugger/watchhandler.cpp b/src/plugins/debugger/watchhandler.cpp
index 656589b5c5e..3c57479d157 100644
--- a/src/plugins/debugger/watchhandler.cpp
+++ b/src/plugins/debugger/watchhandler.cpp
@@ -683,7 +683,7 @@ void WatchItem::fetchMore()
     model->m_fetchTriggered.insert(iname);
     if (children().isEmpty()) {
         setChildrenNeeded();
-        model->m_engine->updateWatchItem(this);
+        model->m_engine->updateWatchData(iname);
     }
 }
 
@@ -940,12 +940,12 @@ bool WatchModel::setData(const QModelIndex &idx, const QVariant &value, int role
 
         case LocalsTypeFormatRole:
             setTypeFormat(item->type, value.toInt());
-            m_engine->updateWatchItem(item);
+            m_engine->updateWatchData(item->iname);
             break;
 
         case LocalsIndividualFormatRole: {
             setIndividualFormat(item->iname, value.toInt());
-            m_engine->updateWatchItem(item);
+            m_engine->updateWatchData(item->iname);
             break;
         }
     }
@@ -1281,7 +1281,7 @@ void WatchHandler::watchExpression(const QString &exp0, const QString &name)
         item->setValue(QString(QLatin1Char(' ')));
         m_model->insertItem(item);
     } else {
-        m_model->m_engine->updateWatchItem(item);
+        m_model->m_engine->updateWatchData(item->iname);
     }
     updateWatchersWindow();
 }
diff --git a/src/plugins/debugger/watchhandler.h b/src/plugins/debugger/watchhandler.h
index b01a3110c47..b823bb9063f 100644
--- a/src/plugins/debugger/watchhandler.h
+++ b/src/plugins/debugger/watchhandler.h
@@ -125,14 +125,6 @@ private:
     void parseWatchData(const GdbMi &input);
 };
 
-class UpdateParameters
-{
-public:
-    UpdateParameters() {}
-
-    QByteArray partialVariable;
-};
-
 class WatchModelBase : public Utils::TreeModel
 {
     Q_OBJECT
@@ -216,7 +208,6 @@ private:
 } // namespace Internal
 } // namespace Debugger
 
-Q_DECLARE_METATYPE(Debugger::Internal::UpdateParameters)
 Q_DECLARE_METATYPE(Debugger::Internal::DisplayFormats)
 
 #endif // DEBUGGER_WATCHHANDLER_H
diff --git a/src/plugins/debugger/watchwindow.cpp b/src/plugins/debugger/watchwindow.cpp
index da800380e89..cd76bbe78c8 100644
--- a/src/plugins/debugger/watchwindow.cpp
+++ b/src/plugins/debugger/watchwindow.cpp
@@ -961,7 +961,7 @@ void WatchTreeView::setModel(QAbstractItemModel *model)
 
 void WatchTreeView::rowActivated(const QModelIndex &index)
 {
-    currentEngine()->watchDataSelected(index.data(LocalsINameRole).toByteArray());
+    currentEngine()->selectWatchData(index.data(LocalsINameRole).toByteArray());
 }
 
 void WatchTreeView::handleItemIsExpanded(const QModelIndex &idx)