QmlProfiler: add functionality to search for notes

Added a text field to search for notes within the timeline's events.

Task-number: QTCREATORBUG-13417
Change-Id: Ic121ec8ade42b1ef99d5da13d1f732761d244327
Reviewed-by: Ulf Hermann <ulf.hermann@theqtcompany.com>

src/plugins/qmlprofiler/qmlprofilertool.cpp

@@ -71,6 +71,7 @@
 #include <QFileDialog>
 #include <QHBoxLayout>
 #include <QLabel>
+#include <QLineEdit>
 #include <QMenu>
 #include <QMessageBox>
 #include <QTcpServer>
@@ -108,6 +109,12 @@ public:
     QTime m_recordingElapsedTime;
     QLabel *m_timeLabel;
 
+    // search field
+    QToolButton *m_searchButton;
+    QLineEdit *m_searchField;
+    QTimer *m_searchFieldTimer;
+    int m_lastSearchResult;
+
     // save and load actions
     QAction *m_saveQmlTrace;
     QAction *m_loadQmlTrace;
@@ -126,6 +133,10 @@ QmlProfilerTool::QmlProfilerTool(QObject *parent)
     d->m_featuresMenu = 0;
     d->m_clearButton = 0;
     d->m_timeLabel = 0;
+    d->m_searchButton = 0;
+    d->m_searchField = 0;
+    d->m_searchFieldTimer = 0;
+    d->m_lastSearchResult = -1;
 
     d->m_profilerState = new QmlProfilerStateManager(this);
     connect(d->m_profilerState, SIGNAL(stateChanged()), this, SLOT(profilerStateChanged()));
@@ -285,6 +296,32 @@ QWidget *QmlProfilerTool::createWidgets()
     updateTimeDisplay();
     layout->addWidget(d->m_timeLabel);
 
+    d->m_searchButton = new QToolButton;
+    d->m_searchButton->setIcon(QIcon(QStringLiteral(":/timeline/ico_zoom.png")));
+    d->m_searchButton->setToolTip(tr("Toggle the event search field."));
+    d->m_searchButton->setCheckable(true);
+    layout->addWidget(d->m_searchButton);
+
+    d->m_searchField = new QLineEdit;
+    d->m_searchField->setToolTip(tr("Find events that have a specific note."));
+    d->m_searchField->hide();
+    layout->addWidget(d->m_searchField);
+
+    connect(d->m_searchButton, &QToolButton::toggled, [this] (bool checked) {
+        d->m_searchField->setVisible(checked);
+        if (checked) {
+            d->m_searchButton->setText(d->m_searchButton->text() + QLatin1Char(':'));
+            d->m_searchField->setFocus();
+            d->m_searchField->selectAll();
+        } else {
+            QString str = d->m_searchButton->text();
+            str.chop(1);
+            d->m_searchButton->setText(str);
+        }
+    });
+    connect(d->m_searchField, &QLineEdit::returnPressed, this, &QmlProfilerTool::findEvent);
+
+    layout->addStretch();
     toolbarWidget->setLayout(layout);
 
     // When the widgets are requested we assume that the session data
@@ -399,6 +436,45 @@ void QmlProfilerTool::updateTimeDisplay()
     d->m_timeLabel->setText(tr("Elapsed: %1").arg(profilerTimeStr));
 }
 
+void QmlProfilerTool::findEvent()
+{
+    const QString substr = d->m_searchField->text();
+    QmlProfilerNotesModel *model = d->m_profilerModelManager->notesModel();
+
+    bool found = false;
+    forever {
+        for (int i = d->m_lastSearchResult + 1; i < model->count(); ++i) {
+            if (model->text(i).contains(substr)) {
+                d->m_lastSearchResult = i;
+                found = true;
+                break;
+            }
+        }
+        if (found || d->m_lastSearchResult == -1)
+            break;
+        d->m_lastSearchResult = -1;
+    }
+
+    if (found) {
+        emit selectTimelineElement(model->timelineModel(d->m_lastSearchResult),
+                                   model->timelineIndex(d->m_lastSearchResult));
+        d->m_searchField->setFocus();
+    } else {
+        QPalette p = d->m_searchField->palette();
+        p.setColor(QPalette::Text, Qt::red);
+        d->m_searchField->setPalette(p);
+        if (!d->m_searchFieldTimer) {
+            d->m_searchFieldTimer = new QTimer(this);
+            connect(d->m_searchFieldTimer, &QTimer::timeout, [this] () {
+                d->m_searchField->setPalette(d->m_searchField->parentWidget()->palette());
+            });
+        }
+        if (d->m_searchFieldTimer->isActive())
+            d->m_searchFieldTimer->stop();
+        d->m_searchFieldTimer->start(1500);
+    }
+}
+
 void QmlProfilerTool::clearData()
 {
     d->m_profilerModelManager->clear();