Add TryExec property to kget plugin

This way we don't display the kget plugin, unless we have the app installed.

libkonq/src/konq_kpart_plugin.cpp

@@ -14,6 +14,7 @@
 #include <KPluginFactory>
 #include <KPluginLoader>
 #include <KPluginMetaData>
+#include <KService>
 #include <KSharedConfig>
 #include <KXMLGUIFactory>
 
@@ -104,6 +105,15 @@ QList<Plugin::PluginInfo> Plugin::pluginInfos(const QString &componentName)
             continue;
         }
 
+        const QString guessedService = info.m_absXMLFileName.replace(QLatin1String(".rc"), QLatin1String(".desktop"));
+        if (!guessedService.isEmpty() && QFileInfo::exists(guessedService)) {
+            KDesktopFile file(guessedService);
+            const QString tryExec = file.desktopGroup().readEntry("TryExec");
+            if (!tryExec.isEmpty() && QStandardPaths::findExecutable(tryExec).isEmpty()) {
+                continue;
+            }
+        }
+
         plugins.append(info);
     }
 

plugins/kget/kget_plugin.desktop

 [Desktop Entry]
 Encoding=UTF-8
 Icon=kget
+TryExec=kget
 X-KDE-Library=konqueror_kget_browser_integration
 X-KDE-PluginInfo-Author=KGet Maintainers
 X-KDE-PluginInfo-Email=kget@kde.org