add OPDS search support & next/prev page navigation (upstream #1462)

src/activities/browser/OpdsBookBrowserActivity.h

@@ -11,21 +11,13 @@
 /**
  * Activity for browsing and downloading books from an OPDS server.
  * Supports navigation through catalog hierarchy and downloading EPUBs.
- * When WiFi connection fails, launches WiFi selection to let user connect.
  */
 class OpdsBookBrowserActivity final : public Activity {
  public:
-  enum class BrowserState {
-    CHECK_WIFI,      // Checking WiFi connection
-    WIFI_SELECTION,  // WiFi selection subactivity is active
-    LOADING,         // Fetching OPDS feed
-    BROWSING,        // Displaying entries (navigation or books)
-    DOWNLOADING,     // Downloading selected EPUB
-    ERROR            // Error state with message
-  };
+  enum class BrowserState { CHECK_WIFI, WIFI_SELECTION, LOADING, BROWSING, DOWNLOADING, ERROR, SEARCH_INPUT };
 
   explicit OpdsBookBrowserActivity(GfxRenderer& renderer, MappedInputManager& mappedInput)
-      : Activity("OpdsBookBrowser", renderer, mappedInput) {}
+      : Activity("OpdsBookBrowser", renderer, mappedInput), buttonNavigator() {}
 
   void onEnter() override;
   void onExit() override;
@@ -36,8 +28,11 @@ class OpdsBookBrowserActivity final : public Activity {
   ButtonNavigator buttonNavigator;
   BrowserState state = BrowserState::LOADING;
   std::vector<OpdsEntry> entries;
-  std::vector<std::string> navigationHistory;  // Stack of previous feed paths for back navigation
-  std::string currentPath;                     // Current feed path being displayed
+  std::vector<std::string> navigationHistory;
+  std::string currentPath;
+  std::string searchTemplate;
+  bool consumeConfirm = false;
+  bool consumeBack = false;  // Added missing member
   int selectorIndex = 0;
   std::string errorMessage;
   std::string statusMessage;
@@ -51,5 +46,7 @@ class OpdsBookBrowserActivity final : public Activity {
   void navigateToEntry(const OpdsEntry& entry);
   void navigateBack();
   void downloadBook(const OpdsEntry& book);
+  void launchSearch();
+  void performSearch(const std::string& query);
   bool preventAutoSleep() override { return true; }
 };