feat: add search engine selection and context menu search functionality (#6743)

Reviewed-by: pajlada <rasmus.karlsson@pajlada.com>

src/singletons/Settings.hpp

@@ -310,6 +310,22 @@ public:
     BoolSetting autoCloseThreadPopup = {"/behaviour/autoCloseThreadPopup",
                                         false};
 
+    /// Specifies whether the search functionality should be enabled
+    BoolSetting searchEnabled = {
+        "/behaviour/search/enabled",
+        false,
+    };
+    /// The URL of the search engine
+    QStringSetting searchEngineUrl = {
+        "/behaviour/search/engineUrl",
+        "",
+    };
+    /// The name of the search engine
+    QStringSetting searchEngineName = {
+        "/behaviour/search/engineName",
+        "",
+    };
+
     EnumSetting<UsernameRightClickBehavior> usernameRightClickBehavior = {
         "/behaviour/usernameRightClickBehavior",
         UsernameRightClickBehavior::Mention,

src/widgets/helper/ChannelView.cpp

@@ -66,6 +66,7 @@
 #include <QPainter>
 #include <QScreen>
 #include <QStringBuilder>
+#include <QUrl>
 #include <QVariantAnimation>
 
 #include <algorithm>
@@ -2710,6 +2711,25 @@ void ChannelView::addMessageContextMenuItems(QMenu *menu,
         }
     }
 
+    // Add search action when text is selected and search feature is enabled
+    if (!this->selection_.isEmpty() && getSettings()->searchEnabled.getValue())
+    {
+        QString searchURL = getSettings()->searchEngineUrl.getValue();
+        QString searchName = getSettings()->searchEngineName.getValue();
+
+        if (!searchURL.isEmpty())
+        {
+            QString actionText =
+                searchName.isEmpty() ? "&Search" : "&Search with " + searchName;
+
+            menu->addAction(actionText, [this, searchURL] {
+                QString query = this->getSelectedText().trimmed();
+                QString encodedQuery = QUrl::toPercentEncoding(query);
+                QDesktopServices::openUrl(QUrl(searchURL + encodedQuery));
+            });
+        }
+    }
+
     auto *twitchChannel =
         dynamic_cast<TwitchChannel *>(this->underlyingChannel_.get());
     if (!layout->getMessage()->id.isEmpty() && twitchChannel &&

src/widgets/settingspages/GeneralPage.cpp

@@ -31,6 +31,8 @@
 #include <QFormLayout>
 #include <QLabel>
 #include <QMessageBox>
+#include <QPalette>
+#include <QSignalBlocker>
 
 namespace {
 
@@ -1214,6 +1216,74 @@ void GeneralPage::initLayout(GeneralPageView &layout)
                      "the top and a positive to the bottom.")
         ->addTo(layout);
 
+    {
+        layout.addSubtitle("Search");
+        layout.addDescription(
+            "Search engine which appears when you select text and right-click "
+            "a message. Select a search engine preset from the dropdown below, "
+            "or fill in your custom search engine URL and name.");
+        SettingWidget::checkbox("Enable search in right-click context menu",
+                                s.searchEnabled)
+            ->setTooltip(
+                "Allow searching selected text using a search engine from "
+                "the right-click context menu.")
+            ->addTo(layout);
+
+        // Preset dropdown
+        QStringList presetList = {"DuckDuckGo", "Bing", "Google"};
+        auto *presetCombo =
+            layout.addDropdown("Search engine preset", presetList,
+                               "Select a search engine preset");
+        presetCombo->setPlaceholderText("Select...");
+        presetCombo->setCurrentIndex(-1);
+        // Make placeholder text more visible
+        QPalette palette = presetCombo->palette();
+        palette.setColor(QPalette::PlaceholderText,
+                         QColor(255, 255, 255));  // white
+        presetCombo->setPalette(palette);
+        s.searchEnabled.connect([presetCombo](bool value) {
+            presetCombo->setEnabled(value);
+        });
+
+        // Connect preset dropdown to update URL and name settings
+        QObject::connect(
+            presetCombo, QOverload<int>::of(&QComboBox::currentIndexChanged),
+            [&s, presetCombo](int index) {
+                if (index < 0)
+                    return;
+
+                QString preset = presetCombo->itemText(index);
+                if (preset == "DuckDuckGo")
+                {
+                    s.searchEngineUrl = "https://duckduckgo.com/?q=";
+                    s.searchEngineName = "DuckDuckGo";
+                }
+                else if (preset == "Bing")
+                {
+                    s.searchEngineUrl = "https://www.bing.com/search?q=";
+                    s.searchEngineName = "Bing";
+                }
+                else if (preset == "Google")
+                {
+                    s.searchEngineUrl = "https://www.google.com/search?q=";
+                    s.searchEngineName = "Google";
+                }
+                // Reset to -1 after selection
+                {
+                    QSignalBlocker blocker(presetCombo);
+                    presetCombo->setCurrentIndex(-1);
+                }
+            });
+
+        // URL and Name text inputs
+        SettingWidget::lineEdit("Search engine URL", s.searchEngineUrl)
+            ->conditionallyEnabledBy(s.searchEnabled)
+            ->addTo(layout);
+
+        SettingWidget::lineEdit("Search engine name", s.searchEngineName)
+            ->conditionallyEnabledBy(s.searchEnabled)
+            ->addTo(layout);
+    }
     layout.addSubtitle("Miscellaneous");
 
     if (supportsIncognitoLinks())