Web Dynpro for ABAP(13):Messages

3.18 Messages

WDA运行过程中显示提示信息。

示例：WDR_TEST_MSG_AREA；

使用接口类：IF_WD_MESSAGE_MANAGER；

类中方法：

CLEAR_MESSAGES：Deletes all messages

IS_EMPTY：Queries whether messages are available

REPORT_ATTRIBUTE_ERROR_MESSAGE：Reports a Web Dynpro exception for a context attribute

REPORT_ATTRIBUTE_EXCEPTION：Reports a Web Dynpro exception for a context attribute

REPORT_ATTRIBUTE_T100_MESSAGE：Reports a Web Dynpro exception for a context attribute

REPORT_ERROR_MESSAGE：Reports a Web Dynpro message with optional parameters

REPORT_EXCEPTION：Reports a Web Dynpro exception (may be returned)

REPORT_FATAL_ERROR_MESSAGE：Reports a fatal Web Dynpro message with optional parameters

REPORT_FATAL_EXCEPTION：Reports a fatal Web Dynpro exception

REPORT_SUCCESS：Reports a success message

REPORT_T100_MESSAGE：Reports a message using a T100 entry

REPORT_WARNING：Reports a warning

 

配置Message Area,使用接口类：IF_WD_MESSAGE_AREA方法。

示例：

l_api_mycomp type ref toif_wd_window_controller,

l_wd_message_area type ref toif_wd_message_area.

l_api_mycomp ?=wd_this->wd_get_api ( ).

l_wd_message_area = l_api_mycomp->get_message_area ( ).

l_wd_message_area->set_display_attributes (

i_for_all_instances =''

i_msg_lines_visible ='0'

i_use_toggle_area =' '

i_show_only_current ='' ).

设置参数说明：

i_use_toggle_area = ''：New design of the message area (default setting)

i_use_toggle_area = 'X'：Old design of the message area (with the toggle area)

i_msg_lines_visible = 0：All messages are immediately visible (default setting)

i_msg_lines_visible = <x>：x > 0. Only x messages are immediately visible; the rest become visible by scrolling.

i_show_only_current = 'X'：Together with i_use_toggle_area = '' this means that no message log can be displayed (default setting)

i_show_only_current = ''：Together with i_use_toggle_area = '' this means that a link takes you to where the message log can be displayed

 

Message使用实例：

在COMPONENTCONTROLLER中创建公共方法SHOW_MSG;

输入参数MSG,Type:STRING;

输入参数MSG_TYPE,Type:CHAR1;

 

示例：

  "显示信息
  DATA:l_current_controller TYPE REF TO if_wd_controller.
  DATA:l_message_manager    TYPE REF TO if_wd_message_manager.
  
  "获取message manager
  l_current_controller ?= wd_this->wd_get_api( ).
  CALL METHOD l_current_controller->get_message_manager
    RECEIVING
      message_manager = l_message_manager.

  IF msg_type = 'S'.
    "report message
    CALL METHOD l_message_manager->report_success
      EXPORTING
        message_text = msg.
  ELSEIF msg_type = 'E'.
    "report error
    CALL METHOD l_message_manager->report_error_message
      EXPORTING
        message_text = msg.
  ELSEIF msg_type = 'I'.
    "report information
    CALL METHOD l_message_manager->report_message
      EXPORTING
        message_text = msg.
  ENDIF.