Timeline: Remove useless dataAvailable() signals

The only thing they did was trigger some QML code that set the zoom to
10% of the available range. 10% is somewhat arbitrary, so we shouldn't
have it in the general purpose timeline. Also, we don't really have to
pass the signal through several connections just to do that in QML.

The clearChildren() didn't have any effect there as dataAvailable()
should only happen if the view is already cleared.

Change-Id: I1813ed37a82fc3fd5c3b7fc02b2afb1dcbcadcfb
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

src/libs/timeline/qml/MainView.qml

@@ -79,16 +79,6 @@ Rectangle {
         }
     }
 
-
-    Connections {
-        target: timelineModelAggregator
-        onDataAvailable: {
-            content.clearChildren();
-            zoomControl.setRange(zoomControl.traceStart,
-                                 zoomControl.traceStart + zoomControl.traceDuration / 10);
-        }
-    }
-
     onSelectionRangeModeChanged: {
         selectionRange.reset();
         buttonsBar.updateRangeButton(selectionRangeMode);

src/libs/timeline/timelinemodelaggregator.h

@@ -63,7 +63,6 @@ public:
     Q_INVOKABLE QVariantMap prevItem(int selectedModel, int selectedItem, qint64 time) const;
 
 signals:
-    void dataAvailable();
     void stateChanged();
     void modelsChanged();
     void heightChanged();

src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp

@@ -337,7 +337,6 @@ void QmlProfilerModelManager::complete()
         // Load notes after the timeline models have been initialized.
         d->notesModel->loadData();
         setState(QmlProfilerDataState::Done);
-        emit dataAvailable();
         break;
     case QmlProfilerDataState::AcquiringData:
         // Make sure the trace fits into the time span.

src/plugins/qmlprofiler/qmlprofilermodelmanager.h

@@ -136,7 +136,6 @@ signals:
     void error(const QString &error);
     void stateChanged();
     void progressChanged();
-    void dataAvailable();
     void loadFinished();
     void saveFinished();
 

src/plugins/qmlprofiler/qmlprofilertraceview.cpp

@@ -98,7 +98,10 @@ QmlProfilerTraceView::QmlProfilerTraceView(QWidget *parent, QmlProfilerTool *pro
 
     d->m_zoomControl = new Timeline::TimelineZoomControl(this);
     connect(modelManager->traceTime(), &QmlProfilerTraceTime::timeChanged,
-            d->m_zoomControl, &Timeline::TimelineZoomControl::setTrace);
+            [this](qint64 start, qint64 end) {
+        d->m_zoomControl->setTrace(start, end);
+        d->m_zoomControl->setRange(start, start + (end - start) / 10);
+    });
 
     QVBoxLayout *groupLayout = new QVBoxLayout;
     groupLayout->setContentsMargins(0, 0, 0, 0);
@@ -130,8 +133,6 @@ QmlProfilerTraceView::QmlProfilerTraceView(QWidget *parent, QmlProfilerTool *pro
     d->m_modelProxy = new Timeline::TimelineModelAggregator(modelManager->notesModel(), this);
     d->m_modelManager = modelManager;
 
-    connect(modelManager,SIGNAL(dataAvailable()), d->m_modelProxy,SIGNAL(dataAvailable()));
-
     // external models pushed on top
     foreach (QmlProfilerTimelineModel *timelineModel,
              QmlProfilerPlugin::instance->getModels(modelManager)) {