Add track searching to network track screen

data/gui/screens/tracks.stkgui

@@ -36,11 +36,13 @@
         </box>
     </div>
     <div id="vote" x="63%" y="1%" width="36%" height="88%" layout="vertical-row">
-        <div width="100%" proportion="2" layout="horizontal-row">
+        <div width="100%" height="92%" layout="horizontal-row">
             <box proportion="2" height="100%" layout="vertical-row">
                 <list id="vote-list" width="100%" height="100%" word_wrap="true"/>
             </box>
         </div>
+        <spacer height="1%"/>
+        <textbox id="search_track" width="100%" height="fit"/>
     </div>
     <progressbar x="2%" y="93%" id="timer" height="1f" width="96%"></progressbar>
 </stkgui>

src/states_screens/online/tracks_screen.cpp

@@ -219,6 +219,7 @@ void TracksScreen::beforeAddingWidget()
     Screen::init();
 
     m_selected_track = NULL;
+    m_search_track = NULL;
     m_timer = getWidget<GUIEngine::ProgressBarWidget>("timer");
     m_timer->showLabel(false);
 
@@ -367,7 +368,14 @@ void TracksScreen::beforeAddingWidget()
 void TracksScreen::init()
 {
     if (m_network_tracks)
+    {
+        m_search_track = getWidget<TextBoxWidget>("search_track");
+        m_search_track->setText(L"");
+        // Add listener for incremental update when search text is changed
+        m_search_track->clearListeners();
+        m_search_track->addListener(this);
         updateProgressBarText();
+    }
 
     // change the back button image (because it makes the game quit)
     if (m_quit_server)
@@ -563,6 +571,15 @@ void TracksScreen::buildTrackList()
     for (int n = 0; n < track_amount; n++)
     {
         Track* curr = track_manager->getTrack(n);
+        core::stringw search_text;
+        if (m_search_track)
+        {
+            search_text = m_search_track->getText();
+            search_text.make_lower();
+        }
+        if (!search_text.empty() &&
+            curr->getName().make_lower().find(search_text.c_str()) == -1)
+            continue;
         if (RaceManager::get()->getMinorMode() == RaceManager::MINOR_MODE_EASTER_EGG
             && !curr->hasEasterEggs())
             continue;

src/states_screens/online/tracks_screen.hpp

@@ -19,6 +19,7 @@
 #define HEADER_TRACKS_SCREEN_HPP
 
 #include "guiengine/screen.hpp"
+#include "guiengine/widgets/text_box_widget.hpp"
 
 #include <deque>
 #include <limits>
@@ -50,7 +51,8 @@ namespace irr
   * \ingroup states_screens
   */
 class TracksScreen : public GUIEngine::Screen,
-                     public GUIEngine::ScreenSingleton<TracksScreen>
+                     public GUIEngine::ScreenSingleton<TracksScreen>,
+                     public GUIEngine::ITextBoxWidgetListener
 {
     friend class GUIEngine::ScreenSingleton<TracksScreen>;
 
@@ -60,6 +62,7 @@ private:
     GUIEngine::CheckBoxWidget* m_reversed;
     GUIEngine::SpinnerWidget* m_laps;
     GUIEngine::ListWidget* m_vote_list;
+    GUIEngine::TextBoxWidget* m_search_track;
 
     /** Pointer to progress bar widget which is used as a timer
     *  (going backwards). */
@@ -147,6 +150,11 @@ public:
     }
     // ------------------------------------------------------------------------
     void updatePlayerVotes();
+    // ------------------------------------------------------------------------
+    virtual void onTextUpdated() OVERRIDE
+    {
+        eventCallback(m_search_track, "trackgroups", 0);
+    }
 };
 
 #endif