Add setters for board url, cache, username, and password to DanbooruService

Remove also a useless constructor

src/libdanbooru/danbooruservice.h

@@ -104,8 +104,6 @@ private:
 public:
 
 
-    DanbooruService(QObject *parent = 0);
-
     /**
      * @brief Construct a default instance of the service.
      *
@@ -117,7 +115,7 @@ public:
      * @param parent The parent QObject
      *
      **/
-    DanbooruService(QUrl &boardUrl, QString username = QString(),
+    DanbooruService(QUrl boardUrl=QUrl(), QString username = QString(),
                     QString password = QString(), KImageCache *cache = 0,
                     QObject *parent = 0);
 
@@ -212,6 +210,35 @@ public:
      **/
     void setBlackList(QStringList blacklist);
 
+
+    /**
+     * @brief Set the board URL to connect to.
+     *
+     * @param url The URL to connect to.
+     * @return void
+     */
+    void setBoardUrl(const QUrl& url);
+
+
+    /**
+     * @brief Set an image cache to use.
+     *
+     * @param cache A pointer to an intsnaec of KImageCache.
+     * @return void
+     */
+    void setImageCache(KImageCache *cache);
+
+    /**
+     * @brief Set username for login.
+     *
+     * @param username The username to use.
+     * @return void
+     */
+    void setUserName(const QString& username);
+
+    void setPassword(const QString& password);
+
+
 private Q_SLOTS:
     void processPostList(KJob *job);
     void downloadAllTags(KJob *job);