Search: save queries across restarts, related tweaks & fixes

src/library/librarycontrol.cpp

@@ -288,6 +288,19 @@ LibraryControl::LibraryControl(Library* pLibrary)
                     m_pSearchbox->slotClearSearch();
                 }
             });
+    m_pDeleteSearchQuery = std::make_unique<ControlPushButton>(
+            ConfigKey("[Library]", "delete_search_query"));
+    connect(m_pDeleteSearchQuery.get(),
+            &ControlPushButton::valueChanged,
+            this,
+            [this](double value) {
+                VERIFY_OR_DEBUG_ASSERT(m_pSearchbox) {
+                    return;
+                }
+                if (value > 0.0) {
+                    m_pSearchbox->slotDeleteCurrentItem();
+                }
+            });
 
     /// Deprecated controls
     m_pSelectNextTrack = std::make_unique<ControlPushButton>(ConfigKey("[Playlist]", "SelectNextTrack"));

src/library/librarycontrol.h

@@ -150,6 +150,7 @@ class LibraryControl : public QObject {
     std::unique_ptr<ControlPushButton> m_pSelectHistoryPrev;
     std::unique_ptr<ControlEncoder> m_pSelectHistorySelect;
     std::unique_ptr<ControlPushButton> m_pClearSearch;
+    std::unique_ptr<ControlPushButton> m_pDeleteSearchQuery;
 
     // Font sizes
     std::unique_ptr<ControlPushButton> m_pFontSizeIncrement;

src/skin/legacy/legacyskinparser.cpp

@@ -1299,7 +1299,7 @@ QWidget* LegacySkinParser::parseSearchBox(const QDomElement& node) {
                     WSearchLineEdit::kDefaultDebouncingTimeoutMillis);
     WSearchLineEdit::setDebouncingTimeoutMillis(searchDebouncingTimeoutMillis);
 
-    WSearchLineEdit* pLineEditSearch = new WSearchLineEdit(m_pParent);
+    WSearchLineEdit* pLineEditSearch = new WSearchLineEdit(m_pParent, m_pConfig);
     commonWidgetSetup(node, pLineEditSearch, false);
     pLineEditSearch->setup(node, *m_pContext);
 

src/widget/wsearchlineedit.cpp

@@ -24,6 +24,8 @@ const QColor kDefaultBackgroundColor = QColor(0, 0, 0);
 
 const QString kDisabledText = QStringLiteral("- - -");
 
+const QString kSavedQueriesConfigGroup = QStringLiteral("[SearchQueries]");
+
 constexpr int kClearButtonClearence = 1;
 
 inline QString clearButtonStyleSheet(int pxPadding, Qt::LayoutDirection direction) {
@@ -74,9 +76,10 @@ void WSearchLineEdit::setDebouncingTimeoutMillis(int debouncingTimeoutMillis) {
     s_debouncingTimeoutMillis = verifyDebouncingTimeoutMillis(debouncingTimeoutMillis);
 }
 
-WSearchLineEdit::WSearchLineEdit(QWidget* pParent)
+WSearchLineEdit::WSearchLineEdit(QWidget* pParent, UserSettingsPointer pConfig)
         : QComboBox(pParent),
           WBaseWidget(this),
+          m_pConfig(pConfig),
           m_clearButton(make_parented<QToolButton>(this)) {
     qRegisterMetaType<FocusWidget>("FocusWidget");
     setAcceptDrops(false);
@@ -147,9 +150,15 @@ WSearchLineEdit::WSearchLineEdit(QWidget* pParent)
             clearButtonSize.width() + m_frameWidth + kClearButtonClearence,
             layoutDirection()));
 
+    loadQueriesFromConfig();
+
     refreshState();
 }
 
+WSearchLineEdit::~WSearchLineEdit() {
+    saveQueriesInConfig();
+}
+
 void WSearchLineEdit::setup(const QDomNode& node, const SkinContext& context) {
     auto backgroundColor = kDefaultBackgroundColor;
     QString bgColorName;
@@ -219,17 +228,57 @@ void WSearchLineEdit::setup(const QDomNode& node, const SkinContext& context) {
             tr("Use operators like bpm:115-128, artist:BooFar, -year:1990") +
             "\n" + tr("For more information see User Manual > Mixxx Library") +
             "\n\n" +
-            tr("Shortcut") + ": \n" + tr("Ctrl+F") + "  " +
+            tr("Shortcuts") + ": \n" +
+            tr("Ctrl+F") + "  " +
             tr("Focus", "Give search bar input focus") + "\n" +
             tr("Ctrl+Backspace") + "  " +
             tr("Clear input", "Clear the search bar input field") + "\n" +
             tr("Ctrl+Space") + "  " +
             tr("Toggle search history",
                     "Shows/hides the search history entries") +
             "\n" +
+            tr("Delete or Backspace") + "  " + tr("Delete query from history") + "\n" +
             tr("Esc") + "  " + tr("Exit search", "Exit search bar and leave focus"));
 }
 
+void WSearchLineEdit::loadQueriesFromConfig() {
+    if (!m_pConfig) {
+        return;
+    }
+    const QList<ConfigKey> queryKeys =
+            m_pConfig->getKeysWithGroup(kSavedQueriesConfigGroup);
+    QSet<QString> queryStrings;
+    for (const auto& queryKey : queryKeys) {
+        const auto& queryString = m_pConfig->getValueString(queryKey);
+        if (queryString.isEmpty() || queryStrings.contains(queryString)) {
+            // Don't add duplicate and remove it from the config immediately
+            m_pConfig->remove(queryKey);
+        } else {
+            // Restore query
+            addItem(queryString);
+            queryStrings.insert(queryString);
+        }
+    }
+}
+
+void WSearchLineEdit::saveQueriesInConfig() {
+    if (!m_pConfig) {
+        return;
+    }
+    // Delete saved queries in case the list was cleared
+    const QList<ConfigKey> queryKeys =
+            m_pConfig->getKeysWithGroup(kSavedQueriesConfigGroup);
+    for (const auto& queryKey : queryKeys) {
+        m_pConfig->remove(queryKey);
+    }
+    // Store queries
+    for (int index = 0; index < count(); index++) {
+        m_pConfig->setValue(
+                ConfigKey(kSavedQueriesConfigGroup, QString::number(index)),
+                itemText(index));
+    }
+}
+
 void WSearchLineEdit::updateStyleMetrics() {
     QStyleOptionComboBox styleArrow;
     styleArrow.initFrom(this);
@@ -298,6 +347,13 @@ bool WSearchLineEdit::eventFilter(QObject* obj, QEvent* event) {
                     slotSaveSearch();
                 }
             }
+        } else {
+            if (keyEvent->key() == Qt::Key_Backspace ||
+                    keyEvent->key() == Qt::Key_Delete) {
+                // remove the highlighted item from the list
+                deleteSelectedListItem();
+                return true;
+            }
         }
         if (keyEvent->key() == Qt::Key_Enter) {
             if (findCurrentTextIndex() == -1) {
@@ -335,6 +391,7 @@ void WSearchLineEdit::focusOutEvent(QFocusEvent* event) {
     kLogger.trace()
             << "focusOutEvent";
 #endif // ENABLE_TRACE_LOG
+    slotSaveSearch();
     QComboBox::focusOutEvent(event);
     emit searchbarFocusChange(FocusWidget::None);
     if (m_debouncingTimer.isActive()) {
@@ -408,23 +465,32 @@ void WSearchLineEdit::slotTriggerSearch() {
 
 /// saves the current query as selection
 void WSearchLineEdit::slotSaveSearch() {
-    int cIndex = findCurrentTextIndex();
 #if ENABLE_TRACE_LOG
     kLogger.trace()
             << "save search. Index: "
             << cIndex;
 #endif // ENABLE_TRACE_LOG
     m_saveTimer.stop();
-    // entry already exists and is on top
-    if (cIndex == 0) {
+    if (currentText().isEmpty() || !isEnabled()) {
         return;
     }
-    if (!currentText().isEmpty() && isEnabled()) {
-        // we remove the existing item and add a new one at the top
-        if (cIndex != -1) {
-            removeItem(cIndex);
-        }
-        insertItem(0, currentText());
+    QString cText = currentText();
+    if (currentIndex() == -1) {
+        removeItem(-1);
+    }
+    // Check if the text is already listed
+    QSet<QString> querySet;
+    for (int index = 0; index < count(); index++) {
+        querySet.insert(itemText(index));
+    }
+    if (querySet.contains(cText)) {
+        // If query exists clear the box and use its index to set the currentIndex
+        int cIndex = findCurrentTextIndex();
+        setCurrentIndex(cIndex);
+        return;
+    } else {
+        // Else add it at the top
+        insertItem(0, cText);
         setCurrentIndex(0);
         while (count() > kMaxSearchEntries) {
             removeItem(kMaxSearchEntries);
@@ -433,6 +499,9 @@ void WSearchLineEdit::slotSaveSearch() {
 }
 
 void WSearchLineEdit::slotMoveSelectedHistory(int steps) {
+    if (!isEnabled()) {
+        return;
+    }
     int nIndex = currentIndex() + steps;
     // at the top we manually wrap around to the last entry.
     // at the bottom wrap-around happens automatically due to invalid nIndex.
@@ -443,6 +512,43 @@ void WSearchLineEdit::slotMoveSelectedHistory(int steps) {
     m_saveTimer.stop();
 }
 
+void WSearchLineEdit::slotDeleteCurrentItem() {
+    if (!isEnabled()) {
+        return;
+    }
+    if (view()->isVisible()) {
+        deleteSelectedListItem();
+    } else {
+        deleteSelectedComboboxItem();
+    }
+}
+
+void WSearchLineEdit::deleteSelectedComboboxItem() {
+    int cIndex = currentIndex();
+    if (cIndex == -1) {
+        return;
+    } else {
+        slotClearSearch();
+        QComboBox::removeItem(cIndex);
+    }
+}
+
+void WSearchLineEdit::deleteSelectedListItem() {
+    bool wasEmpty = currentIndex() == -1 ? true : false;
+    QComboBox::removeItem(view()->currentIndex().row());
+    // ToDo Resize the list to new item size
+    // Close the popup if all items were removed
+
+    // When an item is removed the combobox would pick a sibling and trigger a
+    // search. Avoid this if the box was empty when the popup was opened.
+    if (wasEmpty) {
+        QComboBox::setCurrentIndex(-1);
+    }
+    if (count() == 0) {
+        hidePopup();
+    }
+}
+
 void WSearchLineEdit::refreshState() {
 #if ENABLE_TRACE_LOG
     kLogger.trace()
@@ -464,6 +570,14 @@ void WSearchLineEdit::showPopup() {
         setCurrentIndex(cIndex);
     }
     QComboBox::showPopup();
+    // When (empty) index -1 is selected in the combobox and the list view is opened
+    // index 0 is auto-set but not highlighted.
+    // Select first index manually (only in the list).
+    if (cIndex == -1) {
+        view()->selectionModel()->select(
+                view()->currentIndex(),
+                QItemSelectionModel::Select);
+    }
 }
 
 void WSearchLineEdit::updateEditBox(const QString& text) {
@@ -520,7 +634,9 @@ void WSearchLineEdit::slotClearSearch() {
     kLogger.trace()
             << "slotClearSearch";
 #endif // ENABLE_TRACE_LOG
-    DEBUG_ASSERT(isEnabled());
+    if (!isEnabled()) {
+        return;
+    }
     // select the last entry as current before cleaning the text field
     // so arrow keys will work as expected
     setCurrentIndex(-1);

src/widget/wsearchlineedit.h

@@ -7,6 +7,7 @@
 #include <QToolButton>
 
 #include "library/library_decl.h"
+#include "preferences/usersettings.h"
 #include "util/parented_ptr.h"
 #include "widget/wbasewidget.h"
 
@@ -26,8 +27,8 @@ class WSearchLineEdit : public QComboBox, public WBaseWidget {
     static void setDebouncingTimeoutMillis(int debouncingTimeoutMillis);
     virtual void showPopup() override;
 
-    explicit WSearchLineEdit(QWidget* pParent);
-    ~WSearchLineEdit() override = default;
+    explicit WSearchLineEdit(QWidget* pParent, UserSettingsPointer pConfig = nullptr);
+    ~WSearchLineEdit();
 
     void setup(const QDomNode& node, const SkinContext& context);
 
@@ -55,6 +56,7 @@ class WSearchLineEdit : public QComboBox, public WBaseWidget {
     /// entry in the history and executes the search.
     /// The parameter specifies the distance in steps (positive/negative = downward/upward)
     void slotMoveSelectedHistory(int steps);
+    void slotDeleteCurrentItem();
 
   private slots:
     void slotSetShortcutFocus();
@@ -78,6 +80,8 @@ class WSearchLineEdit : public QComboBox, public WBaseWidget {
     void updateEditBox(const QString& text);
     void updateClearButton(const QString& text);
     void updateStyleMetrics();
+    void deleteSelectedComboboxItem();
+    void deleteSelectedListItem();
 
     inline int findCurrentTextIndex() {
         return findData(currentText(), Qt::DisplayRole);
@@ -88,6 +92,10 @@ class WSearchLineEdit : public QComboBox, public WBaseWidget {
     // Update the displayed text without (re-)starting the timer
     void setTextBlockSignals(const QString& text);
 
+    UserSettingsPointer m_pConfig;
+    void loadQueriesFromConfig();
+    void saveQueriesInConfig();
+
     parented_ptr<QToolButton> const m_clearButton;
 
     int m_frameWidth;