WSearchLineEdit: Add options to disable auto-completion and history

src/library/library_prefs.cpp

@@ -48,6 +48,16 @@ const ConfigKey mixxx::library::prefs::kSearchDebouncingTimeoutMillisConfigKey =
                 mixxx::library::prefs::kConfigGroup,
                 QStringLiteral("SearchDebouncingTimeoutMillis")};
 
+const ConfigKey mixxx::library::prefs::kEnableSearchCompletionsConfigKey =
+        ConfigKey{
+                mixxx::library::prefs::kConfigGroup,
+                QStringLiteral("EnableSearchCompletions")};
+
+const ConfigKey mixxx::library::prefs::kEnableSearchHistoryShortcutsConfigKey =
+        ConfigKey{
+                mixxx::library::prefs::kConfigGroup,
+                QStringLiteral("EnableSearchHistoryShortcuts")};
+
 // The "Export" suffix in the key is kept for backward compatibility
 const ConfigKey mixxx::library::prefs::kSyncTrackMetadataConfigKey =
         ConfigKey{

src/library/library_prefs.h

@@ -20,6 +20,10 @@ extern const ConfigKey kTrackDoubleClickActionConfigKey;
 
 extern const ConfigKey kSearchDebouncingTimeoutMillisConfigKey;
 
+extern const ConfigKey kEnableSearchCompletionsConfigKey;
+
+extern const ConfigKey kEnableSearchHistoryShortcutsConfigKey;
+
 extern const ConfigKey kEditMetadataSelectedClickConfigKey;
 
 extern const ConfigKey kHistoryMinTracksToKeepConfigKey;

src/preferences/dialog/dlgpreflibrary.cpp

@@ -90,6 +90,8 @@ DlgPrefLibrary::DlgPrefLibrary(
             this,
             &DlgPrefLibrary::slotSearchDebouncingTimeoutMillisChanged);
 
+    updateSearchLineEditHistoryOptions();
+
     connect(libraryFontButton, &QAbstractButton::clicked, this, &DlgPrefLibrary::slotSelectFont);
 
     // TODO(XXX) this string should be extracted from the soundsources
@@ -210,6 +212,9 @@ void DlgPrefLibrary::slotResetToDefaults() {
     setLibraryFont(QApplication::font());
     searchDebouncingTimeoutSpinBox->setValue(
             WSearchLineEdit::kDefaultDebouncingTimeoutMillis);
+    checkBoxEnableSearchCompletions->setChecked(WSearchLineEdit::kCompletionsEnabledDefault);
+    checkBoxEnableSearchHistoryShortcuts->setChecked(
+            WSearchLineEdit::kHistoryShortcutsEnabledDefault);
 }
 
 void DlgPrefLibrary::slotUpdate() {
@@ -267,6 +272,13 @@ void DlgPrefLibrary::slotUpdate() {
     checkBoxEditMetadataSelectedClicked->setChecked(editMetadataSelectedClick);
     m_pLibrary->setEditMedatataSelectedClick(editMetadataSelectedClick);
 
+    checkBoxEnableSearchCompletions->setChecked(m_pConfig->getValue(
+            kEnableSearchCompletionsConfigKey,
+            WSearchLineEdit::kCompletionsEnabledDefault));
+    checkBoxEnableSearchHistoryShortcuts->setChecked(m_pConfig->getValue(
+            kEnableSearchHistoryShortcutsConfigKey,
+            WSearchLineEdit::kHistoryShortcutsEnabledDefault));
+
     m_originalTrackTableFont = m_pLibrary->getTrackTableFont();
     m_iOriginalTrackTableRowHeight = m_pLibrary->getTrackTableRowHeight();
     spinBoxRowHeight->setValue(m_iOriginalTrackTableRowHeight);
@@ -413,6 +425,12 @@ void DlgPrefLibrary::slotApply() {
     m_pConfig->set(kUseRelativePathOnExportConfigKey,
             ConfigValue((int)checkBox_use_relative_path->isChecked()));
 
+    m_pConfig->set(kEnableSearchCompletionsConfigKey,
+            ConfigValue(checkBoxEnableSearchCompletions->isChecked()));
+    m_pConfig->set(kEnableSearchHistoryShortcutsConfigKey,
+            ConfigValue(checkBoxEnableSearchHistoryShortcuts->isChecked()));
+    updateSearchLineEditHistoryOptions();
+
     m_pConfig->set(ConfigKey("[Library]","ShowRhythmboxLibrary"),
                 ConfigValue((int)checkBox_show_rhythmbox->isChecked()));
     m_pConfig->set(ConfigKey("[Library]","ShowBansheeLibrary"),
@@ -495,6 +513,15 @@ void DlgPrefLibrary::slotSearchDebouncingTimeoutMillisChanged(int searchDebounci
     WSearchLineEdit::setDebouncingTimeoutMillis(searchDebouncingTimeoutMillis);
 }
 
+void DlgPrefLibrary::updateSearchLineEditHistoryOptions() {
+    WSearchLineEdit::setSearchCompletionsEnabled(m_pConfig->getValue<bool>(
+            kEnableSearchCompletionsConfigKey,
+            WSearchLineEdit::kCompletionsEnabledDefault));
+    WSearchLineEdit::setSearchHistoryShortcutsEnabled(m_pConfig->getValue<bool>(
+            kEnableSearchHistoryShortcutsConfigKey,
+            WSearchLineEdit::kHistoryShortcutsEnabledDefault));
+}
+
 void DlgPrefLibrary::slotSyncTrackMetadataToggled() {
     if (isVisible() && checkBox_SyncTrackMetadata->isChecked()) {
         mixxx::DlgTrackMetadataExport::showMessageBoxOncePerSession();

src/preferences/dialog/dlgpreflibrary.h

@@ -59,6 +59,7 @@ class DlgPrefLibrary : public DlgPreferencePage, public Ui::DlgPrefLibraryDlg  {
   private:
     void initializeDirList();
     void setLibraryFont(const QFont& font);
+    void updateSearchLineEditHistoryOptions();
 
     QStandardItemModel m_dirListModel;
     UserSettingsPointer m_pConfig;

src/preferences/dialog/dlgpreflibrarydlg.ui

@@ -361,6 +361,21 @@
        </widget>
       </item>
 
+      <item row="4" column="0" colspan="3">
+       <widget class="QCheckBox" name="checkBoxEnableSearchCompletions">
+        <property name="text">
+         <string>Enable search completions</string>
+        </property>
+       </widget>
+      </item>
+      <item row="5" column="0" colspan="3">
+       <widget class="QCheckBox" name="checkBoxEnableSearchHistoryShortcuts">
+        <property name="text">
+         <string>Enable search history keyboard shortcuts</string>
+        </property>
+       </widget>
+      </item>
+
      </layout>
     </widget>
    </item>
@@ -540,6 +555,8 @@
   <tabstop>libraryFont</tabstop>
   <tabstop>libraryFontButton</tabstop>
   <tabstop>searchDebouncingTimeoutSpinBox</tabstop>
+  <tabstop>checkBoxEnableSearchCompletions</tabstop>
+  <tabstop>checkBoxEnableSearchHistoryShortcuts</tabstop>
   <tabstop>checkBox_show_rhythmbox</tabstop>
   <tabstop>checkBox_show_banshee</tabstop>
   <tabstop>checkBox_show_itunes</tabstop>

src/widget/wsearchlineedit.cpp

@@ -6,12 +6,15 @@
 #include <QLineEdit>
 #include <QShortcut>
 #include <QSizePolicy>
+#include <QStringLiteral>
 #include <QStyle>
 
 #include "moc_wsearchlineedit.cpp"
+#include "preferences/configobject.h"
 #include "skin/legacy/skincontext.h"
 #include "util/assert.h"
 #include "util/logger.h"
+#include "util/parented_ptr.h"
 #include "wskincolor.h"
 #include "wwidget.h"
 
@@ -25,6 +28,7 @@ const QColor kDefaultBackgroundColor = QColor(0, 0, 0);
 
 const QString kDisabledText = QStringLiteral("- - -");
 
+const QString kLibraryConfigGroup = QStringLiteral("[Library]");
 const QString kSavedQueriesConfigGroup = QStringLiteral("[SearchQueries]");
 
 // Border width, max. 2 px when focused (in official skins)
@@ -59,16 +63,29 @@ constexpr int WSearchLineEdit::kMaxSearchEntries;
 
 //static
 int WSearchLineEdit::s_debouncingTimeoutMillis = kDefaultDebouncingTimeoutMillis;
+bool WSearchLineEdit::s_completionsEnabled = kCompletionsEnabledDefault;
+bool WSearchLineEdit::s_historyShortcutsEnabled = kHistoryShortcutsEnabledDefault;
 
 //static
 void WSearchLineEdit::setDebouncingTimeoutMillis(int debouncingTimeoutMillis) {
     s_debouncingTimeoutMillis = verifyDebouncingTimeoutMillis(debouncingTimeoutMillis);
 }
 
+// static
+void WSearchLineEdit::setSearchCompletionsEnabled(bool searchCompletionsEnabled) {
+    s_completionsEnabled = searchCompletionsEnabled;
+}
+
+// static
+void WSearchLineEdit::setSearchHistoryShortcutsEnabled(bool searchHistoryShortcutsEnabled) {
+    s_historyShortcutsEnabled = searchHistoryShortcutsEnabled;
+}
+
 WSearchLineEdit::WSearchLineEdit(QWidget* pParent, UserSettingsPointer pConfig)
         : QComboBox(pParent),
           WBaseWidget(this),
           m_pConfig(pConfig),
+          m_completer(make_parented<QCompleter>(this)),
           m_clearButton(make_parented<QToolButton>(this)),
           m_queryEmitted(false) {
     qRegisterMetaType<FocusWidget>("FocusWidget");
@@ -83,6 +100,10 @@ WSearchLineEdit::WSearchLineEdit(QWidget* pParent, UserSettingsPointer pConfig)
     //: Shown in the library search bar when it is empty.
     lineEdit()->setPlaceholderText(tr("Search..."));
 
+    m_completer->setModel(model());
+    m_completer->setCompletionMode(QCompleter::CompletionMode::InlineCompletion);
+    updateCompleter();
+
     // The goal is to make Esc natively close the popup, while in the line edit it
     // should move the keyboard focus to the tracks table. Unfortunately, eventFilter()
     // can't catch Esc before the popup is closed, and keyPressEvent() can't catch
@@ -327,6 +348,9 @@ void WSearchLineEdit::keyPressEvent(QKeyEvent* keyEvent) {
         // If we're at the top of the list the Up key clears the search bar,
         // no matter if it's a saved or unsaved query.
         // Otherwise Up is handled by the combobox itself.
+        if (!s_historyShortcutsEnabled) {
+            return;
+        }
         currentTextIndex = findCurrentTextIndex();
         if (currentTextIndex == 0 ||
                 (currentTextIndex == -1 && !currentText().isEmpty())) {
@@ -337,6 +361,9 @@ void WSearchLineEdit::keyPressEvent(QKeyEvent* keyEvent) {
     case Qt::Key_Down:
         // After clearing the text field the Down key
         // is expected to show the latest query
+        if (!s_historyShortcutsEnabled) {
+            return;
+        }
         if (currentText().isEmpty()) {
             setCurrentIndex(0);
             return;
@@ -364,7 +391,7 @@ void WSearchLineEdit::keyPressEvent(QKeyEvent* keyEvent) {
         return;
     case Qt::Key_Space:
         // Open/close popup with Ctrl + space
-        if (keyEvent->modifiers() == Qt::ControlModifier) {
+        if (s_historyShortcutsEnabled && keyEvent->modifiers() == Qt::ControlModifier) {
             if (view()->isVisible()) {
                 hidePopup();
             } else {
@@ -400,6 +427,7 @@ void WSearchLineEdit::focusInEvent(QFocusEvent* event) {
             << "focusInEvent";
 #endif // ENABLE_TRACE_LOG
     QComboBox::focusInEvent(event);
+    updateCompleter();
     updateClearAndDropdownButton(currentText());
 }
 
@@ -658,6 +686,15 @@ void WSearchLineEdit::updateClearAndDropdownButton(const QString& text) {
     setStyleSheet(styleSheet);
 }
 
+void WSearchLineEdit::updateCompleter() {
+#if ENABLE_TRACE_LOG
+    kLogger.trace()
+            << "updateCompleter";
+#endif // ENABLE_TRACE_LOG
+
+    lineEdit()->setCompleter(s_completionsEnabled ? m_completer.toWeakRef() : nullptr);
+}
+
 bool WSearchLineEdit::event(QEvent* pEvent) {
     if (pEvent->type() == QEvent::ToolTip) {
         updateTooltip();

src/widget/wsearchlineedit.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <QComboBox>
+#include <QCompleter>
 #include <QDomNode>
 #include <QEvent>
 #include <QTimer>
@@ -22,9 +23,13 @@ class WSearchLineEdit : public QComboBox, public WBaseWidget {
     static constexpr int kMaxDebouncingTimeoutMillis = 9999;
     static constexpr int kSaveTimeoutMillis = 5000;
     static constexpr int kMaxSearchEntries = 50;
+    static constexpr bool kCompletionsEnabledDefault = true;
+    static constexpr bool kHistoryShortcutsEnabledDefault = true;
 
     // TODO(XXX): Replace with a public slot
     static void setDebouncingTimeoutMillis(int debouncingTimeoutMillis);
+    static void setSearchCompletionsEnabled(bool searchCompletionsEnabled);
+    static void setSearchHistoryShortcutsEnabled(bool searchHistoryShortcutsEnabled);
     virtual void showPopup() override;
 
     explicit WSearchLineEdit(QWidget* pParent, UserSettingsPointer pConfig = nullptr);
@@ -74,12 +79,15 @@ class WSearchLineEdit : public QComboBox, public WBaseWidget {
     // value provider that sends signals whenever the corresponding
     // configuration value changes.
     static int s_debouncingTimeoutMillis;
+    static bool s_completionsEnabled;
+    static bool s_historyShortcutsEnabled;
 
     void refreshState();
 
     void enableSearch(const QString& text);
     void updateEditBox(const QString& text);
     void updateClearAndDropdownButton(const QString& text);
+    void updateCompleter();
     void deleteSelectedComboboxItem();
     void deleteSelectedListItem();
 
@@ -96,6 +104,7 @@ class WSearchLineEdit : public QComboBox, public WBaseWidget {
     void loadQueriesFromConfig();
     void saveQueriesInConfig();
 
+    parented_ptr<QCompleter> m_completer;
     parented_ptr<QToolButton> const m_clearButton;
 
     int m_innerHeight;