ABAP 显示长文本

业务背景:目前项目上采购订单打印输出EXCEL的需求：允许客户进行长文本编辑、更改后保存到采购订单抬头，并且打印输出到EXCEL，且下次进入到相同的采购订单打印时，能取出相应的长文本进行excel输出。

一般来讲，这种类型于这种编辑后输出的需求直接在ALV上对应的列设置为可编辑即可，但是这次需求不太一样，它是一个长文本输出，而ALV的列显示最大128位（这里的意思是：如果ALV的列里存了1000位长度的文本，但是它只会显示128位，但是如果输出成EXCEL时候是可以正常把1000位全都输出的）。为了解决alv不能显示长文本的问题，稍微研究了下长文本的形式。

长文本:在SAP内，我是用一个容器来实现的，或者应该不用容器也是可以的(比如docking)，在屏幕上画一个容器，然后显示出来。

效果展示

其中保存按钮是当用户在点击后会把当前的文本更新回ALV，取消按钮则不做任何操作直接返回

主要代码

*&---------------------------------------------------------------------*
*& Module STATUS_9100 OUTPUT
*&---------------------------------------------------------------------*
*&
*&---------------------------------------------------------------------*
MODULE STATUS_9100 OUTPUT.
  SET PF-STATUS 'STATUS_9100'.
  SET TITLEBAR 'TITLEBAR_9100'.

  IF LCL_EDITOR IS INITIAL.
    "实例化容器
    CREATE OBJECT LCL_CONTAINER
      EXPORTING
        CONTAINER_NAME = 'ZCON'.
    "实例化texteditor控制器
    CREATE OBJECT LCL_EDITOR
      EXPORTING
*       MAX_NUMBER_CHARS           =
       STYLE                      = 0
*        WORDWRAP_MODE              = CL_GUI_TEXTEDIT=>WORDWRAP_AT_FIXED_POSITION "固定位置显示
        WORDWRAP_POSITION          = -1
        WORDWRAP_TO_LINEBREAK_MODE = CL_GUI_TEXTEDIT=>TRUE "可以回车换行
*       FILEDROP_MODE              = DROPFILE_EVENT_OFF
        PARENT                     = LCL_CONTAINER
*       LIFETIME                   =
*       NAME                       =
      EXCEPTIONS
        ERROR_CNTL_CREATE          = 1
        ERROR_CNTL_INIT            = 2
        ERROR_CNTL_LINK            = 3
        ERROR_DP_CREATE            = 4
        GUI_TYPE_NOT_SUPPORTED     = 5
        OTHERS                     = 6.




      CALL METHOD LCL_EDITOR->SET_TEXT_AS_R3TABLE
        EXPORTING
          TABLE           = GT_LINES
        EXCEPTIONS
          ERROR_DP        = 1
          ERROR_DP_CREATE = 2
      .

    "隐藏TOOLBAR
    CALL METHOD LCL_EDITOR->SET_TOOLBAR_MODE
      EXPORTING
        TOOLBAR_MODE           = 0
      EXCEPTIONS
        ERROR_CNTL_CALL_METHOD = 1
        INVALID_PARAMETER      = 2
        OTHERS                 = 3
            .
    IF SY-SUBRC <> 0.
*     Implement suitable error handling here
    ENDIF.
  ENDIF.
ENDMODULE.
*&---------------------------------------------------------------------*
*&      Module  USER_COMMAND_9100  INPUT
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
MODULE USER_COMMAND_9100 INPUT.
  CLEAR SAVE_CODE.
  SAVE_CODE = OK_CODE.
  CLEAR OK_CODE.
  REFRESH GT_LINES.
  CASE SAVE_CODE.
    WHEN 'BACK' OR 'EXIT' OR 'ZCANCEL' OR 'CANCEL'.
      IF LCL_EDITOR IS NOT INITIAL.
        CLEAR:LCL_EDITOR.
*        CALL METHOD LCL_EDITOR->FREE.
      ENDIF.
      IF LCL_CONTAINER IS NOT INITIAL.
        CLEAR:LCL_CONTAINER.
*        CALL METHOD LCL_CONTAINER->FREE.
      ENDIF.
      LEAVE TO SCREEN 0.
    WHEN 'ZSAVE'.
      "读取textedictor中的内容并输出

      CLEAR:GT_LINES.
      CALL METHOD LCL_EDITOR->GET_TEXT_AS_R3TABLE
*      EXPORTING
*        ONLY_WHEN_MODIFIED     = FALSE
        IMPORTING
          TABLE                  = GT_LINES
*         IS_MODIFIED            =
        EXCEPTIONS
          ERROR_DP               = 1
          ERROR_CNTL_CALL_METHOD = 2
          ERROR_DP_CREATE        = 3
          POTENTIAL_DATA_LOSS    = 4
          OTHERS                 = 5.
      IF G_CG_TYPE EQ 'CGDD'.
        CLEAR:GS_OUTPUT-ZTEXT_CGDD.
        APPEND LINES OF GT_LINES TO GS_OUTPUT-ZTEXT_CGDD.
      ELSEIF G_CG_TYPE EQ 'CGHT'.
        CLEAR:GS_OUTPUT-ZTEXT_CGDD.
        APPEND LINES OF GT_LINES TO GS_OUTPUT-ZTEXT_CGHT.
      ENDIF.

      IF LCL_EDITOR IS NOT INITIAL.
        CLEAR:LCL_EDITOR.
*        CALL METHOD LCL_EDITOR->FREE.
      ENDIF.
      IF LCL_CONTAINER IS NOT INITIAL.
        CLEAR:LCL_CONTAINER.
*        CALL METHOD LCL_CONTAINER->FREE.
      ENDIF.

      LEAVE TO SCREEN 0.
  ENDCASE.
ENDMODULE.