我有一个实例CL_SIMPLE_TREE_MODEL
,我设法触发并处理了CONTEXT_MENU_REQUEST
事件,并构建了我的上下文菜单。
我按照我想要的方式添加了我的功能。
问题是,当我从上下文菜单中选择一个选项时,什么也没有发生。换句话说,程序流不会进入CONTEXT_MENU_SELECT
.
我当然假设当我单击上下文菜单中的功能时会触发此事件。
我找到了官方文档,但仅适用于您使用 Shift+F10 访问的“默认上下文菜单”,它需要程序中的某些子例程才能触发。
我做了什么:
- 我确实定义并实现了一个方法,该方法是该事件的处理程序。
- 我确实在为事件设置处理程序的同一位置设置了
CONTEXT_MENU_REQUEST
事件处理程序 - 我没有注册该事件,
SET_REGISTERED_EVENTS
因为在该事件的类属性中没有定义任何 ID - 例如该CONTEXT_MENU_REQUEST
事件。
编码:
REPORT.
CLASS lcl_tree_handler DEFINITION.
PUBLIC SECTION.
METHODS:
pbo,
on_ctx_menu_request FOR EVENT node_context_menu_request OF cl_simple_tree_model
IMPORTING node_key menu sender, "TYPE TM_NODEKEY CL_CTMENU
on_ctx_menu_select FOR EVENT node_context_menu_select OF cl_simple_tree_model
IMPORTING node_key fcode. "TYPE TM_NODEKEY SY-UCOMM
DATA:
po_tree_model TYPE REF TO cl_simple_tree_model,
gt_tree TYPE TABLE OF treemsnodt,
control TYPE REF TO cl_gui_control.
ENDCLASS.
CLASS lcl_tree_handler IMPLEMENTATION.
METHOD pbo.
DATA: lt_events TYPE cntl_simple_events,
ls_event TYPE cntl_simple_event.
FIELD-SYMBOLS <gs_tree> TYPE treemsnodt.
CHECK po_tree_model IS NOT BOUND.
CREATE OBJECT po_tree_model
EXPORTING
node_selection_mode = po_tree_model->node_sel_mode_single.
APPEND INITIAL LINE TO gt_tree ASSIGNING <gs_tree>.
<gs_tree>-node_key = 'Node key 1'.
<gs_tree>-text = 'First node'.
<gs_tree>-isfolder = 'X'.
APPEND INITIAL LINE TO gt_tree ASSIGNING <gs_tree>.
<gs_tree>-node_key = 'Node key 2'.
<gs_tree>-relatkey = 'Node key 1'.
<gs_tree>-relatship = cl_tree_model=>relat_last_child.
<gs_tree>-text = 'First child'.
po_tree_model->add_nodes(
node_table = gt_tree ).
ls_event-eventid = cl_simple_tree_model=>eventid_node_context_menu_req.
ls_event-appl_event = 'X'. "tried with space too
APPEND ls_event TO lt_events.
CALL METHOD po_tree_model->set_registered_events
EXPORTING
events = lt_events.
SET HANDLER on_ctx_menu_request FOR po_tree_model.
SET HANDLER on_ctx_menu_select FOR po_tree_model.
po_tree_model->create_tree_control(
EXPORTING
parent = cl_gui_container=>screen0
IMPORTING
control = control ).
ENDMETHOD.
METHOD on_ctx_menu_request. "I initialize the context menu object here.
DATA: lt_chidren_keys TYPE treemnotab,
ls_child_key TYPE tm_nodekey,
lv_text TYPE gui_text.
CALL METHOD sender->node_get_children
EXPORTING
node_key = node_key
IMPORTING
node_key_table = lt_chidren_keys
EXCEPTIONS
OTHERS = 2.
LOOP AT lt_chidren_keys INTO ls_child_key.
lv_text = ls_child_key.
CALL METHOD menu->add_function
EXPORTING
fcode = 'ONE'
text = lv_text
ftype = 'B'.
ENDLOOP.
menu->add_separator( ).
CALL METHOD menu->add_function
EXPORTING
fcode = 'ALL'
text = 'All the work groups'
ftype = 'W'.
ENDMETHOD.
METHOD on_ctx_menu_select.
BREAK-POINT. "tried actual code here too.
ENDMETHOD.
ENDCLASS.
DATA: go_tree_handler TYPE REF TO lcl_tree_handler.
PARAMETERS dummy.
INITIALIZATION.
CREATE OBJECT go_tree_handler.
AT SELECTION-SCREEN OUTPUT.
go_tree_handler->pbo( ).
AT SELECTION-SCREEN ON EXIT-COMMAND.
go_tree_handler->control->free( ).
显示树,右键单击上下文菜单。
但是当我选择一个菜单项时没有任何反应。我错过了什么吗?