ABAP--关于SAP Control Framework(入门GUI编程的不错的基础介绍)
一、SAP Control Framework的架构
SAP Control Framework的架构分为客户端和应用服务器端，其中客户端包含重要的部件：“Automation Controller”，应用服务器端包含：“ABAP Objects Control Framework”；
Automation Controller的功能
1) The automation controller is the central instance at the frontend. It administers all instances of custom controls.
2) The Automation Controller also contains a list of the events that a custom control can trigger .
3) All communication between the controls at the frontend and the application program at the backend runs through the Automation Controller.
ABAP Objects Control Framework的功能
1) The ABAP Objects Control Framework has a similar function at the backend to that of the Automation Controller at the frontend. All method calls from an application program to a custom control run through the Control Framework. In order to avoid each method call establishing a separate connection to the frontend, the method calls are buffered in the automation queue. The automation queue is not sent to the frontend until you reach a synchronization point.
2) Like the Automation Controller, the Control Framework has a list of control events. This list also contains the corresponding handler methods that need to be called when the event occurs .
3) The Control Framework also maintains a list of the control instances you have created. This list is the basis for the lifetime management of controls
二、SAP Control Framework的事件类型
System events：
该事件发生时，不会发生自动对象的数据交换，不会触发ＰＢＯ和ＰＡＩ事件。
在该事件的处理过程里你可以通过set_new_ok_code 函数设置新值到OK_CODE，人为的触发ＰＡＩ和ＰＢＯ事件。
Application events：
该事件在PAI event处理完后会自动触发（这种情况下屏幕字段已经传输到程序变量），你也可以在ＰＡＩ事件当中使用CL_GUI_CFW=>DISPATCH 来人为触发Application events事件的处理。
三、SAP Control Framework事件的交互图
先由控件触发事件，“Automation Controller”就会检查是否有该事件的注册，有就会向应用服务器提交，应用服务器就将由“ABAP Objects Control Framework”来检测事件的注册，找出对应处理过程并调用处理
四、SAP Control Framework的程序设计步骤
1)定义事件处理类
CLASS lcl_event_receiver DEFINITION.
PUBLIC SECTION.
METHODS Event_Handler
FOR EVENT event_name OF cl_gui_picture
IMPORTING event_parameter
sender .
ENDCLASS.
2)事件类实现
CLASS lcl_event_receiver DEFINITION.
PUBLIC SECTION.
CLASS-METHODS Event_Handler
FOR EVENT event_name OF cl_gui_picture
IMPORTING event_parameter
sender .
ENDCLASS.3) 定义自定义控件容器变量
DATA container TYPE REF TO cl_gui_custom_container.
4)定义自定义变量
DATA my_control TYPE REF TO cl_gui_picture.
DATA events TYPE cntl_simple_events.
DATA wa_events TYPE cntl_simple_event.
6)定义事件处理类的对象
DATA event_receiver TYPE REF TO lcl_event_receiver.
6)创建容器和控件
CREATE OBJECT container
EXPORTING container_name = 'CUSTOM'
lifetime = lifetime.
CREATE OBJECT my_control
EXPORTING parent = container
lifetime = lifetime.
CREATE OBJECT event_receiver.
8)维护事件内表并注册事件
wa_events-eventid = event_id .
wa_events-appl_event = appl_event . “为Ｘ是表示应用类型事件，空表示系统类型事件
APPEND wa_events TO events.
CALL METHOD my_control->set_registered_events
events = events.
9)设置事件处理过程
SET HANDLER event_receiver->Event_Handler
FOR my_control.
五、SAP的GUI的类列表
| CLASS NAME | Super CLASS NAME | DESCRIPTIO |
| CL_GUI_OBJECT | Proxy Class for a GUI Object | |
| CL_FORMPAINTER_BASEWINDOW | CL_GUI_OBJECT | SAP Form Painter Window Base Class |
| CL_FORMPAINTER_BITMAPWINDOW | CL_FORMPAINTER_BASEWINDOW | SAP Form Painter Bitmap Window Class |
| CL_FORMPAINTER_TEXTWINDOW | CL_FORMPAINTER_BASEWINDOW | SAP Form Painter Text Window Class |
| CL_GUI_CONTROL | CL_GUI_OBJECT | Proxy Class for Control in GUI |
| CL_DSVAS_GUI_BUSIGRAPH | CL_GUI_CONTROL | DSVAS: Proxy for Business Graphic |
| CL_GFW_GP_PRES_CHART | CL_GUI_CONTROL | GFW: Product-specific section of CL_GUI_GP_PRES (Chart) |
| CL_GFW_GP_PRES_PIG | CL_GUI_CONTROL | GFW: product specific section for web view |
| CL_GFW_GP_PRES_SAP | CL_GUI_CONTROL | GFW: product-specific section of CL_GUI_GP_PRES (SAP BUSG) |
| CL_GUI_ALV_GRID_BASE | CL_GUI_CONTROL | Basis Class for ALV Grid |
| CL_CALENDAR_CONTROL_SCHEDULE | CL_GUI_ALV_GRID_BASE | Calendar View (Day, Week, Month) |
| CL_GUI_ALV_GRID | CL_GUI_ALV_GRID_BASE | ALV List Viewer |
| CL_ALV_DD_LISTBOX | CL_GUI_ALV_GRID | D&D List Box |
| CL_BUKF_CAT_GRID | CL_GUI_ALV_GRID | Key Figures - Grid of categories |
| CL_BUKF_DSRC_GRID | CL_GUI_ALV_GRID | Key Figures - Grid for Data sources |
| CL_BUKF_FILTER_GRID | CL_GUI_ALV_GRID | Key Figures - Filter for Key Figure |
| CL_BUKF_KF_GRID | CL_GUI_ALV_GRID | Key Figures - Grid for Key Figures |
| CL_BUKF_TERMS_GRID | CL_GUI_ALV_GRID | Key Figures - Grid for terms |
| CL_FTR_GUI_ENTRY_ALV | CL_GUI_ALV_GRID | Class: ALV Grid Control for Initial Screen (Without Toolbar) |
| CL_GFW_GP_GRID_ALV | CL_GUI_ALV_GRID | ALV grid proxy |
| CL_GUI_AQQGRAPHIC_ADAPT | CL_GUI_CONTROL | Network Adapter |
| CL_GUI_AQQGRAPHIC_CONTROL | CL_GUI_CONTROL | BW Basis Class Network Control |
| CL_GUI_AQQGRAPHIC_NETPLAN | CL_GUI_AQQGRAPHIC_CONTROL | Network Control |
| CL_GUI_BARCHART | CL_GUI_CONTROL | Bar chart wrapper |
| CL_GUI_BORDERPAINTER | CL_GUI_CONTROL | SAP Border Painter Control Proxy Class |
| CL_GUI_BTFEDITOR | CL_GUI_CONTROL | SAP BTF Editor Control Proxy Class |
| CL_GUI_CALENDAR | CL_GUI_CONTROL | Calendar Control Proxy Class |
| CL_GUI_CHART_ENGINE_WIN | CL_GUI_CONTROL | Graphics: Presentation Graphics (SAP GUI for Windows) |
| CL_GUI_CONTAINER | CL_GUI_CONTROL | Abstract Container for GUI Controls |
| CL_GUI_CONTAINER_INFO | CL_GUI_CONTAINER | Information on Container Controls |
| CL_GUI_CUSTOM_CONTAINER | CL_GUI_CONTAINER | Container for Custom Controls in the Screen Area |
| CL_GUI_DIALOGBOX_CONTAINER | CL_GUI_CONTAINER | Container for Custom Controls in the Screen Area |
| CL_ECL_VIEWER_FRAME | CL_GUI_DIALOGBOX_CONTAINER | Manage EAI Control in Own Window |
| CL_GUI_ECL_VIEWERBOX | CL_GUI_DIALOGBOX_CONTAINER | ECL Viewer as Dialog Box |
| CL_GUI_DOCKING_CONTAINER | CL_GUI_CONTAINER | Docking Control Container |
| CL_GUI_EASY_SPLITTER_CONTAINER | CL_GUI_CONTAINER | Reduced Version of Splitter Container Control |
| CL_EU_EASY_SPLITTER_CONTAINER | CL_GUI_EASY_SPLITTER_CONTAINER | Internal Test; Do Not Use |
| CL_GUI_GOS_CONTAINER | CL_GUI_CONTAINER | Generic Object Services Container |
| CL_GUI_SIMPLE_CONTAINER | CL_GUI_CONTAINER | Anonymous Container |
| CL_GUI_SPLITTER_CONTAINER | CL_GUI_CONTAINER | Splitter Control |
| CL_GUI_ECL_2DCOMPARE | CL_GUI_CONTROL | Compare Module for 2D Viewer |
| CL_GUI_ECL_3DCOMPARE | CL_GUI_CONTROL | Compare Module for 3D Viewer |
| CL_GUI_ECL_3DMEASUREMENT | CL_GUI_CONTROL | Measurement Module for 3D Viewer |
| CL_GUI_ECL_3DSECTIONING | CL_GUI_CONTROL | Sectioning Module for 3D Viewer |
| CL_GUI_ECL_MARKUP | CL_GUI_CONTROL | Markup (Redlining) Component |
| CL_GUI_ECL_PMI | CL_GUI_CONTROL | PMI Module for the 3D Viewer |
| CL_GUI_ECL_PRIMARYVIEWER | CL_GUI_CONTROL | Basis Class for ECL Viewers (2D und 3D) |
| CL_GUI_ECL_2DVIEWER | CL_GUI_ECL_PRIMARYVIEWER | Engineering Client 2D Viewer |
| CL_GUI_ECL_3DVIEWER | CL_GUI_ECL_PRIMARYVIEWER | Engineering Client 3D Viewer |
| CL_GUI_ECL_VIEWER | CL_GUI_CONTROL | Proxy Class for Engineering Client Viewer |
| CL_GUI_FORMPAINTER | CL_GUI_CONTROL | SAP Form Painter Control Proxy Class |
| CL_GUI_GLT | CL_GUI_CONTROL | Internal; Do Not Use! |
| CL_GUI_GP | CL_GUI_CONTROL | GFW: Superclass of all graphics proxies |
| CL_GUI_GP_GRID | CL_GUI_GP | GFW: Grid proxy |
| CL_GUI_GP_HIER | CL_GUI_GP | GFW: Structure graphics |
| CL_GUI_GP_PRES | CL_GUI_GP | GFW: Business graphic |
| CL_GUI_GRLT | CL_GUI_CONTROL | Internal; Do Not Use !! ( restricted license - see docu) |
| CL_GUI_HTML_EDITOR | CL_GUI_CONTROL | HTML Editor |
| CL_GUI_ILIDRAGNDROP_CONTROL | CL_GUI_CONTROL | Interactive List: Drag & Drop |
| CL_GUI_MOVIE | CL_GUI_CONTROL | SAP Movie Control |
| CL_GUI_NETCHART | CL_GUI_CONTROL | Network wrapper |
| CL_GFW_GP_HIER_SAP | CL_GUI_NETCHART | GFW: Product-specific section of CL_GUI_GP_HIER (NETZ) |
| CL_GUI_PDFVIEWER | CL_GUI_CONTROL | PDF Viewer |
| CL_GUI_PICTURE | CL_GUI_CONTROL | SAP Picture Control |
| CL_GFW_GP_PRES_WEB | CL_GUI_PICTURE | GFW: product specific section for web view |
| CL_GUI_RTF_EDITOR | CL_GUI_CONTROL | SAP SAPscript Editor Control |
| CL_GUI_SAPSCRIPT_EDITOR | CL_GUI_RTF_EDITOR | SAP SAPscript Editor Control |
| CL_GUI_SELECTOR | CL_GUI_CONTROL | SAPSelector: Control for selecting colors or bitmaps |
| CL_GUI_SPH_STATUS_CONTROL | CL_GUI_CONTROL | SAPphone: Status Event Control |
| CL_GUI_TABLEPAINTER | CL_GUI_CONTROL | SAP Table Painter Control Proxy Class |
| CL_GUI_TIMER | CL_GUI_CONTROL | SAP Timer Control |
| CL_GUI_TOOLBAR | CL_GUI_CONTROL | Toolbar Control |
| CL_CCMS_AL_GUI_TOOLBAR | CL_GUI_TOOLBAR | Alerts: GUI Toolbar Used in the Visual Framework |
| CL_GUI_WCF_WWP | CL_GUI_CONTROL | Internal Tool - DO NOT USE |
| CL_KW_AUTOMATION_CONTROL | CL_GUI_CONTROL | Helper Class for General Automation Objects |
| CL_LC_EDITOR_CONTROL | CL_GUI_CONTROL | Lifecycle Editor Control |
| CL_GCM_LCEDITOR_CONTROL | CL_LC_EDITOR_CONTROL | Control for the display of definition life cycles |
| CL_SOTR_SPELLCHECKER | CL_GUI_CONTROL | Interface with OTR Spellchecker |
| CL_SRM_BASE_CONTROL | CL_GUI_CONTROL | SRM Control |
| CL_SRM_STACKED_CONTROL | CL_SRM_BASE_CONTROL | RM Control with Stack |
| CL_TREE_CONTROL_BASE | CL_GUI_CONTROL | Internal Tree Control Class |
| CL_GUI_SIMPLE_TREE | CL_TREE_CONTROL_BASE | Simple Tree Control |
| CL_ITEM_TREE_CONTROL | CL_TREE_CONTROL_BASE | Internal Tree Control Class |
| CL_GUI_COLUMN_TREE | CL_ITEM_TREE_CONTROL | Column Tree Control |
| BDMT_CONTROL | CL_GUI_COLUMN_TREE | Administers Tree Control for Monitoring |
| CL_BUCC_TREE | CL_GUI_COLUMN_TREE | Consistency Checks - Library Tree |
| CL_GFW_COLUMN_TREE | CL_GUI_COLUMN_TREE | Do not use!!!!!!!! |
| CL_GFW_GP_HIER_SAPTREE | CL_GFW_COLUMN_TREE | GFW: Product-specific section of CL_GUI_GP_HIER |
| CL_HU_COLUMN_TREE | CL_GUI_COLUMN_TREE | Tree that Displays Handling Units |
| CL_GUI_LIST_TREE | CL_ITEM_TREE_CONTROL | List Tree Control |
| C_OI_CONTAINER_CONTROL_PROXY | CL_GUI_CONTROL | For Internal Use |
| SCE_HTML_CONTROL_EVENT_HANDLER | CL_GUI_CONTROL | Event Handler for SCE HTML Control |
| CL_ALV_TREE_BASE | CL_GUI_CONTROL | Basis Class ALV Tree Control |
| CL_GUI_ALV_TREE | CL_ALV_TREE_BASE | ALV Tree Control |
| CL_GCM_WORKLIST_TREE | CL_GUI_ALV_TREE | CM: Worklist |
| CL_PT_GUI_TMW_ALV_TREE | CL_GUI_ALV_TREE | Small Modification to CL_GUI_ALV_TREE |
| CL_GUI_ALV_TREE_SIMPLE | CL_ALV_TREE_BASE | Simple ALV Tree |
| CL_SIMPLE_TREE_VIEW_MM | CL_GUI_ALV_TREE_SIMPLE | Simplest Kind of Tree |
| CL_GUI_ECATT_RECORDER | CL_GUI_CONTROL | SAP eCATT Recorder Control - To be used by eCATT only! |
| CL_GUI_TEXTEDIT | CL_GUI_CONTROL | SAP TextEdit Control |
| CL_GCM_TEXTEDIT | CL_GUI_TEXTEDIT | CM: Long text control |
| CL_SOTR_TEXTEDIT | CL_GUI_TEXTEDIT | Edit Control for the OTR |
| CL_GUI_HTML_VIEWER | CL_GUI_CONTROL | HTML Control Proxy Class |
| CL_BFW_HTML_VIEWER_POC | CL_GUI_HTML_VIEWER | Browser Framework: Proxy for HTML Control |
| CL_CCMS_BSP_VIEWER | CL_GUI_HTML_VIEWER | HTML Control Proxy Class |
| CL_CCMS_AL_OBJ_DET_HTML_VIEWER | CL_CCMS_BSP_VIEWER | Alerts: Component That Displays Object Properties with HTML |
| CL_CCMS_FROG_HTML_VIEWER | CL_GUI_HTML_VIEWER | CL_GUI_FROG_HTML_VIEWER |
| CL_SSF_HTML_VIEWER | CL_GUI_HTML_VIEWER | Smart Forms: Enhanced HTML Viewer |
| CL_GUI_ECL_MATRIX | CL_GUI_OBJECT | Represents a Complete Data Type with 13 Floats |
| CL_GUI_RESOURCES | CL_GUI_OBJECT | GUI Resources (Fonts, Colors, ...) |
| CL_WF_GUI_RESOURCES | CL_GUI_RESOURCES | Getting Front Settings |
| CL_WF_GUI_RESOURCES_4_HTML | CL_GUI_RESOURCES | Get Front Settings for HTML Generation |
| CL_KW_AUTOMATION_OBJECT | CL_GUI_OBJECT | For Internal Use |
| CL_TABLEPAINTER_BASETABLE | CL_GUI_OBJECT | SAP Table Painter Table Base Class |
| CL_TABLEPAINTER_TABLE | CL_TABLEPAINTER_BASETABLE | SAP Table Painter Table Class |
| CL_TABLEPAINTER_TEMPLATE | CL_TABLEPAINTER_BASETABLE | SAP Table Painter Template Class |
| C_OI_AUTOMATION_OBJECT | CL_GUI_OBJECT | For Internal Use |
| CL_GUI_FRONTEND_SERVICES | CL_GUI_OBJECT | Frontend services |
本篇只是介绍sap的SAP Control Framework基本原理，具体实例大家可以参见：BCALV_GRID_08等等。
