按层次显示WBS编码及描述，附加节点双击展开事件和Item双击跳转CJ03功能。
![ALV Tree demo(WBS元素分层显示)[引用别人的]详解编程语言](http://blog.ytso.com/zb_users/plugin/LazyLoad/usr/loading.gif)
因为本人懒，本例代码都是从标准的BCALV_TREE_01和BCALV_TREE_02拷贝过来修改的，结构不好请别见怪。 REPORT zmac_alvtree_test. DATA: g_alv_tree TYPE REF TO cl_gui_alv_tree, g_custom_container TYPE REF TO cl_gui_custom_container. TYPES: BEGIN OF ty_wbs, posid TYPE prps-posid, post1 TYPE prps-post1, stufe TYPE prps-stufe, END OF ty_wbs. DATA: gt_wbs TYPE STANDARD TABLE OF ty_wbs, gs_wbs TYPE ty_wbs. DATA: ok_code LIKE sy-ucomm, save_ok LIKE sy-ucomm, "OK-Code g_max TYPE i VALUE 255. DATA: gt_fcat TYPE lvc_t_fcat, gs_fcat TYPE lvc_s_fcat. *----------------------------------------------------------------------* * CLASS lcl_tree_event_receiver DEFINITION *----------------------------------------------------------------------* * *----------------------------------------------------------------------* CLASS lcl_tree_event_receiver DEFINITION. PUBLIC SECTION. METHODS handle_node_double_click FOR EVENT node_double_click OF cl_gui_alv_tree IMPORTING node_key sender. METHODS handle_item_double_click FOR EVENT item_double_click OF cl_gui_alv_tree IMPORTING fieldname node_key. ENDCLASS. "lcl_tree_event_receiver DEFINITION ****************************************************************** CLASS lcl_tree_event_receiver IMPLEMENTATION. METHOD handle_node_double_click. DATA: lt_children TYPE lvc_t_nkey. CALL METHOD sender->get_children EXPORTING i_node_key = node_key IMPORTING et_children = lt_children. IF NOT lt_children IS INITIAL. CALL METHOD sender->expand_node EXPORTING i_node_key = node_key i_level_count = 2. ENDIF. ENDMETHOD. "handle_node_double_click METHOD handle_item_double_click. DATA: l_value TYPE lvc_value, l_layi TYPE lvc_t_layi, l_layn TYPE lvc_s_layn . CALL METHOD g_alv_tree->get_outtab_line EXPORTING i_node_key = node_key IMPORTING e_outtab_line = gs_wbs e_node_text = l_value et_item_layout = l_layi es_node_layout = l_layn EXCEPTIONS node_not_found = 1 OTHERS = 2. IF sy-subrc = 0. SET PARAMETER ID 'PRO' FIELD gs_wbs-posid. CALL TRANSACTION 'CJ03' AND SKIP FIRST SCREEN. ENDIF. ENDMETHOD. "handle_item_double_click ENDCLASS. "lcl_tree_event_receiver IMPLEMENTATION END-OF-SELECTION. CALL SCREEN 100. *&---------------------------------------------------------------------* *& Module PBO OUTPUT *&---------------------------------------------------------------------* * process before output *----------------------------------------------------------------------* MODULE pbo OUTPUT. SET PF-STATUS 'MAIN100'. SET TITLEBAR 'MAINTITLE'. IF g_alv_tree IS INITIAL. PERFORM init_tree. CALL METHOD cl_gui_cfw=>flush EXCEPTIONS cntl_system_error = 1 cntl_error = 2. IF sy-subrc NE 0. CALL FUNCTION 'POPUP_TO_INFORM' EXPORTING titel = 'Automation Queue failure'(801) txt1 = 'Internal error:'(802) txt2 = 'A method in the automation queue'(803) txt3 = 'caused a failure.'(804). ENDIF. ENDIF. ENDMODULE. " PBO OUTPUT *&---------------------------------------------------------------------* *& Module PAI INPUT *&---------------------------------------------------------------------* * process after input *----------------------------------------------------------------------* MODULE pai INPUT. save_ok = ok_code. CLEAR ok_code. CASE save_ok. WHEN 'EXIT' OR 'BACK' OR 'CANC'. PERFORM exit_program. WHEN OTHERS. CALL METHOD cl_gui_cfw=>dispatch. ENDCASE. CALL METHOD cl_gui_cfw=>flush. ENDMODULE. " PAI INPUT *&---------------------------------------------------------------------* *& Form init_tree *&---------------------------------------------------------------------* * text *----------------------------------------------------------------------* * --> p1 text * <-- p2 text *----------------------------------------------------------------------* FORM init_tree. DATA: l_tree_container_name(30) TYPE c. l_tree_container_name = 'CCONTAINER1'. CREATE OBJECT g_custom_container EXPORTING container_name = l_tree_container_name EXCEPTIONS cntl_error = 1 cntl_system_error = 2 create_error = 3 lifetime_error = 4 lifetime_dynpro_dynpro_link = 5. IF sy-subrc <> 0. MESSAGE x208(00) WITH 'ERROR'(100). ENDIF. * create tree control CREATE OBJECT g_alv_tree EXPORTING parent = g_custom_container node_selection_mode = cl_gui_column_tree=>node_sel_mode_single item_selection = 'X' no_html_header = 'X' no_toolbar = '' EXCEPTIONS cntl_error = 1 cntl_system_error = 2 create_error = 3 lifetime_error = 4 illegal_node_selection_mode = 5 failed = 6 illegal_column_name = 7. IF sy-subrc <> 0. MESSAGE x208(00) WITH 'ERROR'. "#EC NOTEXT ENDIF. DATA l_hierarchy_header TYPE treev_hhdr. PERFORM build_hierarchy_header CHANGING l_hierarchy_header. PERFORM build_fieldcategory. CALL METHOD g_alv_tree->set_table_for_first_display EXPORTING is_hierarchy_header = l_hierarchy_header CHANGING it_outtab = gt_wbs "table must be empty ! it_fieldcatalog = gt_fcat. PERFORM create_hierarchy. PERFORM register_events. CALL METHOD g_alv_tree->frontend_update. ENDFORM. " init_tree *&---------------------------------------------------------------------* *& Form build_hierarchy_header *&---------------------------------------------------------------------* * build hierarchy-header-information *----------------------------------------------------------------------* * -->P_L_HIERARCHY_HEADER strucxture for hierarchy-header *----------------------------------------------------------------------* FORM build_hierarchy_header CHANGING p_hierarchy_header TYPE treev_hhdr. p_hierarchy_header-heading = 'Wbs number'(300). p_hierarchy_header-tooltip = 'WBS'(400). p_hierarchy_header-width = 50. p_hierarchy_header-width_pix = ' '. ENDFORM. " build_hierarchy_header *&---------------------------------------------------------------------* *& Form exit_program *&---------------------------------------------------------------------* * free object and leave program *----------------------------------------------------------------------* FORM exit_program. CALL METHOD g_custom_container->free. LEAVE PROGRAM. ENDFORM. " exit_program *&---------------------------------------------------------------------* *& Form create_hierarchy *&---------------------------------------------------------------------* * text *----------------------------------------------------------------------* * --> p1 text * <-- p2 text *----------------------------------------------------------------------* FORM create_hierarchy. DATA: ls_wbs TYPE ty_wbs, lt_wbs TYPE ty_wbs OCCURS 0. DATA: lt_nodes TYPE TABLE OF lvc_nkey WITH HEADER LINE, l_cur_node TYPE lvc_nkey, l_former_stufe TYPE prps-stufe, l_index TYPE i. SELECT posid post1 stufe FROM prps INTO TABLE lt_wbs UP TO 200 ROWS. SORT lt_wbs BY posid. LOOP AT lt_wbs INTO ls_wbs. IF ls_wbs-stufe = '1'. REFRESH lt_nodes. l_index = ls_wbs-stufe. PERFORM add_nodes USING ls_wbs '' CHANGING l_cur_node. READ TABLE lt_nodes INDEX l_index. IF sy-subrc NE 0. APPEND l_cur_node TO lt_nodes. ENDIF. ELSEIF ls_wbs-stufe > l_former_stufe. "on change of l_yyyymm l_index = ls_wbs-stufe - 1. READ TABLE lt_nodes INDEX l_index. PERFORM add_nodes USING ls_wbs lt_nodes CHANGING l_cur_node. *---->保存新的当前节点 APPEND l_cur_node TO lt_nodes. ELSEIF ls_wbs-stufe < l_former_stufe. l_index = ls_wbs-stufe - 1. READ TABLE lt_nodes INDEX l_index. PERFORM add_nodes USING ls_wbs lt_nodes CHANGING l_cur_node. *---->将当前节点及之后后的所有临时存储节点KEY删除 l_index = l_index + 1. DELETE lt_nodes INDEX l_index. DO. READ TABLE lt_nodes INDEX l_index. IF sy-subrc = 0. DELETE lt_nodes INDEX l_index. ELSE. EXIT. ENDIF. ENDDO. *---->保存新的当前节点 APPEND l_cur_node TO lt_nodes. ELSE. l_index = ls_wbs-stufe - 1. READ TABLE lt_nodes INDEX l_index. PERFORM add_nodes USING ls_wbs lt_nodes CHANGING l_cur_node. ENDIF. l_former_stufe = ls_wbs-stufe. ENDLOOP. ENDFORM. " create_hierarchy *&---------------------------------------------------------------------* *& Form add_nodes *&---------------------------------------------------------------------* FORM add_nodes USING ps_wbs TYPE ty_wbs p_cnode_key TYPE lvc_nkey CHANGING p_nnode_key TYPE lvc_nkey. DATA: l_node_text TYPE lvc_value. CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT' EXPORTING input = ps_wbs-posid IMPORTING output = l_node_text. CALL METHOD g_alv_tree->add_node EXPORTING i_relat_node_key = p_cnode_key i_relationship = cl_gui_column_tree=>relat_last_child i_node_text = l_node_text is_outtab_line = ps_wbs IMPORTING e_new_node_key = p_nnode_key. ENDFORM. " add_month *&---------------------------------------------------------------------* *& Form build_fieldcategory *&---------------------------------------------------------------------* FORM build_fieldcategory . * gs_fcat-fieldname = 'POSID'. * gs_fcat-seltext = text-f06. " 字段输出名称 * gs_fcat-coltext = text-f06. " 字段输出名称 * gs_fcat-just = 'L'. * gs_fcat-outputlen = '40'. " 输出长度 * APPEND gs_fcat TO gt_fcat. * CLEAR gs_fcat. gs_fcat-fieldname = 'POST1'. gs_fcat-seltext = text-f01. " 字段输出名称 gs_fcat-coltext = text-f01. " 字段输出名称 gs_fcat-just = 'L'. gs_fcat-outputlen = '40'. " 输出长度 APPEND gs_fcat TO gt_fcat. CLEAR gs_fcat. ENDFORM. " build_fieldcategory *&---------------------------------------------------------------------* *& Form register_events *&---------------------------------------------------------------------* FORM register_events . DATA: lt_events TYPE cntl_simple_events, l_event TYPE cntl_simple_event, l_event_receiver TYPE REF TO lcl_tree_event_receiver. CALL METHOD g_alv_tree->get_registered_events IMPORTING events = lt_events. l_event-eventid = cl_gui_column_tree=>eventid_node_double_click. APPEND l_event TO lt_events. l_event-eventid = cl_gui_column_tree=>eventid_item_double_click. APPEND l_event TO lt_events. CALL METHOD g_alv_tree->set_registered_events EXPORTING events = lt_events EXCEPTIONS cntl_error = 1 cntl_system_error = 2 illegal_event_combination = 3. IF sy-subrc <> 0. MESSAGE x208(00) WITH 'ERROR'. "#EC NOTEXT ENDIF. CREATE OBJECT l_event_receiver. SET HANDLER l_event_receiver->handle_node_double_click FOR g_alv_tree. SET HANDLER l_event_receiver->handle_item_double_click FOR g_alv_tree. ENDFORM. " register_events
原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/tech/pnotes/18677.html