+/**
+ * @brief Get the rendered size of a specific text range.
+ * if the requested text is at multilines, multiple sizes will be returned for each text located in a separate line.
+ * if a line contains characters with different directions, multiple sizes will be returned for each block of contiguous characters with the same direction.
+ *
+ * @param[in] textLabel The instance of TextLabel.
+ * @param[in] startIndex start index of the text requested to calculate size for.
+ * @param[in] endIndex end index(included) of the text requested to calculate size for.
+ * @return list of sizes of the reuested text.
+ */
+DALI_TOOLKIT_API Vector<Vector2> GetTextSize(TextLabel textLabel, const uint32_t startIndex, const uint32_t endIndex);
+
+/**
+ * @brief Get the top/left rendered position of a specific text range.
+ * if the requested text is at multilines, multiple positions will be returned for each text located in a separate line.
+ * if a line contains characters with different directions, multiple positions will be returned for each block of contiguous characters with the same direction.
+ *
+ * @param[in] textLabel The instance of TextLabel.
+ * @param[in] startIndex start index of the text requested to get position to.
+ * @param[in] endIndex end index(included) of the text requested to get position to.
+ * @return list of positions of the requested text.
+ */
+DALI_TOOLKIT_API Vector<Vector2> GetTextPosition(TextLabel textLabel, const uint32_t startIndex, const uint32_t endIndex);
+
+/**
+ * @brief Anchor clicked signal type.
+ *
+ * @note Signal
+ * - const char* : href of clicked anchor.
+ * - uint32_t : length of href.
+ */
+using AnchorClickedSignalType = Signal<void(TextLabel, const char*, uint32_t)>;
+
+/**
+ * @brief TextFit property changed signal type.
+ */
+using TextFitChangedSignalType = Signal<void(TextLabel)>;
+
+/**
+ * @brief This signal is emitted when the anchor is clicked.
+ *
+ * A callback of the following type may be connected:
+ * @code
+ * void YourCallbackName(TextLabel textLabel, const char* href, uint32_t hrefLength);
+ * @endcode
+ * @param[in] textLabel The instance of TextLabel.
+ * @return The signal to connect to.
+ */
+DALI_TOOLKIT_API AnchorClickedSignalType& AnchorClickedSignal(TextLabel textLabel);
+
+/**
+ * @brief This signal is emitted when the textfit property is changed.
+ *
+ * A callback of the following type may be connected:
+ * @code
+ * void YourCallbackName(TextLabel textLabel);
+ * @endcode
+ * @param[in] textLabel The instance of TextLabel.
+ * @return The signal to connect to.
+ */
+DALI_TOOLKIT_API TextFitChangedSignalType& TextFitChangedSignal(TextLabel textLabel);
+