Implemented toggle prev search button

interface/src/ui/BaseLogDialog.cpp

@@ -23,10 +23,11 @@
 const int TOP_BAR_HEIGHT = 46;
 const int INITIAL_WIDTH = 720;
 const int INITIAL_HEIGHT = 480;
-const int MINIMAL_WIDTH = 570;
+const int MINIMAL_WIDTH = 700;
 const int SEARCH_BUTTON_LEFT = 25;
 const int SEARCH_BUTTON_WIDTH = 20;
-const int SEARCH_NEXT_BUTTON_WIDTH = 50;
+const int SEARCH_TOGGLE_BUTTON_WIDTH = 50;
+const int BUTTON_MARGIN = 15;
 const int SEARCH_TEXT_WIDTH = 240;
 const QColor HIGHLIGHT_COLOR = QColor("#3366CC");
 
@@ -77,14 +78,24 @@ void BaseLogDialog::initControls() {
     // disable blue outline in Mac
     _searchTextBox->setAttribute(Qt::WA_MacShowFocusRect, false);
     _searchTextBox->setGeometry(_leftPad, ELEMENT_MARGIN, SEARCH_TEXT_WIDTH, ELEMENT_HEIGHT);
-    _leftPad += SEARCH_TEXT_WIDTH;
+    _leftPad += SEARCH_TEXT_WIDTH + BUTTON_MARGIN;
     _searchTextBox->show();
     connect(_searchTextBox, SIGNAL(textChanged(QString)), SLOT(handleSearchTextChanged(QString)));
+    connect(_searchTextBox, SIGNAL(returnPressed()), SLOT(toggleSearchNext()));
+
+    _searchPrevButton = new QPushButton(this);
+    _searchPrevButton->setObjectName("searchPrevButton");
+    _searchPrevButton->setGeometry(_leftPad, ELEMENT_MARGIN, SEARCH_TOGGLE_BUTTON_WIDTH, ELEMENT_HEIGHT);
+    _searchPrevButton->setText("Prev");
+    _leftPad += SEARCH_TOGGLE_BUTTON_WIDTH + BUTTON_MARGIN;
+    _searchPrevButton->show();
+    connect(_searchPrevButton, SIGNAL(clicked()), SLOT(toggleSearchPrev()));
     
     _searchNextButton = new QPushButton(this);
     _searchNextButton->setObjectName("searchNextButton");
-    _searchNextButton->setGeometry(_leftPad, ELEMENT_MARGIN, SEARCH_NEXT_BUTTON_WIDTH, ELEMENT_HEIGHT);
+    _searchNextButton->setGeometry(_leftPad, ELEMENT_MARGIN, SEARCH_TOGGLE_BUTTON_WIDTH, ELEMENT_HEIGHT);
-    _leftPad += SEARCH_NEXT_BUTTON_WIDTH + CHECKBOX_MARGIN;
+    _searchNextButton->setText("Next");
+    _leftPad += SEARCH_TOGGLE_BUTTON_WIDTH + CHECKBOX_MARGIN;
     _searchNextButton->show();
     connect(_searchNextButton, SIGNAL(clicked()), SLOT(toggleSearchNext()));
 
@@ -92,6 +103,7 @@ void BaseLogDialog::initControls() {
     _logTextBox->setReadOnly(true);
     _logTextBox->show();
     _highlighter = new KeywordHighlighter(_logTextBox->document());
+    connect(_logTextBox, SIGNAL(selectionChanged()), SLOT(updateSelection()));
 
 }
 
@@ -114,13 +126,25 @@ void BaseLogDialog::handleSearchButton() {
 }
 
 void BaseLogDialog::handleSearchTextChanged(QString searchText) {
-    QTextCursor searchCursor = _logTextBox->textCursor();
+    if (searchText.isEmpty()) {
-    searchCursor.setPosition(0, QTextCursor::MoveAnchor);
+        return;
-    _logTextBox->setTextCursor(searchCursor);
+    }
+    
+    QTextCursor cursor = _logTextBox->textCursor();
+    if (cursor.hasSelection()) {
+        QString selectedTerm = cursor.selectedText();
+        if (selectedTerm == searchText) {
+          return;
+        }
+    }
+    
+    cursor.setPosition(0, QTextCursor::MoveAnchor);
+    _logTextBox->setTextCursor(cursor);
     bool foundTerm = _logTextBox->find(searchText);
     
     if (!foundTerm) {
-        searchCursor.movePosition(QTextCursor::End, QTextCursor::MoveAnchor);
+        cursor.movePosition(QTextCursor::End, QTextCursor::MoveAnchor);
+        _logTextBox->setTextCursor(cursor);
     }
     
     _searchTerm = searchText;
@@ -128,11 +152,23 @@ void BaseLogDialog::handleSearchTextChanged(QString searchText) {
     _highlighter->rehighlight();
 }
 
+void BaseLogDialog::toggleSearchPrev() {
+    QTextCursor searchCursor = _logTextBox->textCursor();
+    if (searchCursor.hasSelection()) {
+        QString selectedTerm = searchCursor.selectedText();
+        _logTextBox->find(selectedTerm, QTextDocument::FindBackward);
+    } else {
+        handleSearchTextChanged(_searchTextBox.text());
+    }
+}
+
 void BaseLogDialog::toggleSearchNext() {
     QTextCursor searchCursor = _logTextBox->textCursor();
     if (searchCursor.hasSelection()) {
         QString selectedTerm = searchCursor.selectedText();
         _logTextBox->find(selectedTerm);
+    } else {
+        handleSearchTextChanged(_searchTextBox.text());
     }
 }
 
@@ -142,6 +178,16 @@ void BaseLogDialog::showLogData() {
     _logTextBox->ensureCursorVisible();
 }
 
+void BaseLogDialog::updateSelection() {
+    QTextCursor cursor = _logTextBox->textCursor();
+    if (cursor.hasSelection()) {
+        QString selectionTerm = cursor.selectedText();
+        if (QString::compare(selectionTerm, _searchTextBox->text(), Qt::CaseInsensitive) != 0) {
+            _searchTextBox->setText(selectionTerm);
+        }
+    }
+}
+
 KeywordHighlighter::KeywordHighlighter(QTextDocument* parent) : QSyntaxHighlighter(parent) {
     keywordFormat.setForeground(HIGHLIGHT_COLOR);
 }

interface/src/ui/BaseLogDialog.h

@@ -35,8 +35,10 @@ public slots:
     void appendLogLine(QString logLine);
 
 private slots:
+    void updateSelection();
     void handleSearchButton();
     void handleSearchTextChanged(QString text);
+    void toggleSearchPrev();
     void toggleSearchNext();
 
 protected:
@@ -50,6 +52,7 @@ private:
     QPushButton* _searchButton { nullptr };
     QLineEdit* _searchTextBox { nullptr };
     QPlainTextEdit* _logTextBox { nullptr };
+    QPushButton* _searchPrevButton { nullptr };
     QPushButton* _searchNextButton { nullptr };
     QString _searchTerm;
     KeywordHighlighter* _highlighter { nullptr };