WDA学习（14）：Colors Cell and Input Enable to ALV Column

2.6 Colors and Input Enable to ALV Column

       本实例显示根据上下文配置ALV列是否可输入，显示不同背景颜色。

1.创建项目，声明使用ALV组件

 

 2.设置MAIN视图组件

Properties页签：声明使用ALV组件及接口控制器

 

 Layout页签：创建ViewContainerUIElement作为容器显示ALV

 

 Context页签：创建Node_Sflight节点；

 

在NODE_SFLIGHT节点下再创建Attribute;

Read_only类型为wdy_boolean;

Cell_design类型为WDUI_TABLE_CELL_DESIGN;

注意想要在NODE_SFLIGHT创建额外的Attribute,需要将Dictionary Structure指定的Sflight结构删掉。

 

 Methods页签

实现WDDOINIT方法；

获取数据库Sflight表数据；

将数据绑定到上下文节点Node_sflight;

将上下文节点数据设置到ALV；

配置ALV列颜色和列是否可编辑；

实例代码：

method WDDOINIT .

  DATA:lo_node TYPE REF TO if_wd_context_node.

  DATA:lo_element TYPE REF TO if_wd_context_element.

  DATA:lt_sflight TYPE wd_this->Elements_node_sflight.

  DATA:ls_sflight TYPE wd_this->Element_node_sflight.

 

  "查询数据

  SELECT * INTO CORRESPONDING FIELDS OF TABLE lt_sflight FROM sflight.

 

  "为read_only,cell_desigh赋值

  "cell_design类型：cl_wd_table_column的e_cell_design对应静态变量

 

  LOOP AT lt_sflight INTO ls_sflight.

    IF ls_sflight-carrid = 'AA'.

      ls_sflight-read_only = abap_true.

      ls_sflight-cell_design = cl_wd_table_column=>e_cell_design-COLOR_RED.

    ELSEIF ls_sflight-carrid = 'AZ'.

      ls_sflight-read_only = abap_false.

      ls_sflight-cell_design = cl_wd_table_column=>e_cell_design-COLOR_YELLOW.

    ELSE.

      ls_sflight-read_only = abap_true.

      ls_sflight-cell_design = cl_wd_table_column=>e_cell_design-COLOR_GREEN.

    ENDIF.

    MODIFY lt_sflight FROM ls_sflight.

  ENDLOOP.

 

  "获取node_sflight节点

  lo_node = wd_context->get_child_node( 'NODE_SFLIGHT' ).

  "绑定数据给上下文节点

  lo_node->bind_table( lt_sflight ).

 

  "实例化ALV组件

  DATA:lo_cmp_usage type ref to if_wd_component_usage.

  lo_cmp_usage =   wd_this->wd_cpuse_alv( ).

  if lo_cmp_usage->has_active_component( ) is initial.

    lo_cmp_usage->create_component( ).

  endif.

  "获取ALV接口控制器

  DATA:lo_INTERFACECONTROLLER TYPE REF TO IWCI_SALV_WD_TABLE .

  lo_INTERFACECONTROLLER =   wd_this->wd_cpifc_alv( ).

  "设置alv绑定上下文节点数据

   lo_interfacecontroller->set_data(

*     only_if_new_descr =                 " wdy_boolean

      r_node_data = lo_node               " ref to if_wd_context_node

  ).

 

  "获取config model

  DATA:lv_value TYPE ref to cl_salv_wd_config_table.

  lv_value = lo_interfacecontroller->get_model( ).

  "根据read_only值设置carrid字段是否可输入

  DATA:lo_column TYPE REF TO cl_salv_wd_column.

  DATA:lo_input_field TYPE REF TO cl_salv_wd_uie_input_field.

  CREATE OBJECT lo_input_field EXPORTING value_fieldname = 'PRICE'.

  lo_input_field->SET_READ_ONLY_FIELDNAME( 'READ_ONLY' ).

  "获取列

  lo_column = lv_value->IF_SALV_WD_COLUMN_SETTINGS~GET_COLUMN( 'PRICE' ).

  "设置price列为输入框

  lo_column->SET_CELL_EDITOR( lo_input_field ).

 

  "设置carrid列cell design

  lo_column = lv_value->IF_SALV_WD_COLUMN_SETTINGS~GET_COLUMN( 'CARRID' ).

  lo_column->SET_CELL_DESIGN_FIELDNAME( 'CELL_DESIGN' ).

 

  "将read_only,cell_design列不显示，

  lv_value->IF_SALV_WD_COLUMN_SETTINGS~DELETE_COLUMN( 'READ_ONLY' ).

  lv_value->IF_SALV_WD_COLUMN_SETTINGS~DELETE_COLUMN( 'CELL_DESIGN' ).

endmethod.

3.设置Windows，嵌入ALV视图到容器中

 

 4.创建Web Dynpro Application,运行测试

CARRID列根据Cell_Design功能列值显示不同颜色；

PRICE列根据READ_ONLY功能列值控制是否可输入；