我有一个场景,我希望视图中的TransparentContainer
视图的N个实例,每个视图都接收不同的参数。为了实现这一点,我写了一些动态创建cl_wd_view_container_uielement
的逻辑,将其添加到cl_wd_uielement_container
(主视图上的TransparentContainer
)然后使用动态导航发送插件来发送我的参数。代码可以在下面找到。
这一切都有一个问题:创建的实例不是唯一的,所以我基本上添加了相同视图的N个副本。 N个插件被触发并处理,但最后一个设置所有视图的参数,因为只有一个实例。视图的WDDOMODIFYVIEW
也只会被触发一次。
以下代码改编并从工作版本中清除,因此我知道这是可能的。最大的区别是我在我的场景中添加了来自同一个WDC的视图。在原始应用程序中,动态添加的视图具有自己的Web Dynpro组件,调用者还提供动态创建的组件用法。
是否有某种方法可以创建我缺少的多个实例?在这种情况下,我应该提供组件使用吗?我几个小时以来一直在修补这个问题,但我没有取得任何进展,所以我欢迎任何投入让我走上正轨。
主视图中的代码:
DATA:
lo_container TYPE REF TO cl_wd_uielement_container,
lo_subview TYPE REF TO cl_wd_view_container_uielement,
lo_flow_data TYPE REF TO cl_wd_flow_data,
lo_view_controller TYPE REF TO if_wd_view_controller,
lo_component_usage TYPE REF TO if_wd_component_usage,
lo_wdr_view TYPE REF TO cl_wdr_view,
lo_component_api TYPE REF TO if_wd_component,
lt_posts TYPE ztt_fi_vernot_posts,
ls_post LIKE LINE OF lt_posts,
lt_parameters TYPE wdr_event_parameter_list,
ls_parameter TYPE wdr_event_parameter,
lv_view_id TYPE string,
lv_source_plug_name TYPE string,
lv_target_embed_pos TYPE string,
lv_param_value TYPE REF TO DATA.
FIELD-SYMBOLS:
<lv_param_value> TYPE bu_partner
.
lt_posts = wd_this->mo_model->get_posts( iv_open = abap_true ).
" Retrieve and refresh the view container.
lo_wdr_view ?= wd_this->wd_get_api( ).
lo_container ?= lo_wdr_view->root_element.
lo_container ?= lo_wdr_view->get_element( 'TC_POSTS' ).
lo_container->remove_all_children( ).
LOOP AT lt_posts INTO ls_post.
" View and plug IDs should be unique.
CONCATENATE 'POSTS_' ls_post-index INTO lv_view_id.
CONCATENATE 'OUTPLUG_' ls_post-index INTO lv_source_plug_name.
" Create a new view.
lo_subview = cl_wd_view_container_uielement=>new_view_container_uielement( id = lv_view_id ).
lo_flow_data = cl_wd_flow_data=>new_flow_data( element = lo_subview ).
lo_subview->set_layout_data( lo_flow_data ).
lo_subview->set_layout_data( cl_wd_flow_data=>new_flow_data( element = lo_subview ) ).
lo_container->add_child( lo_subview ).
lo_view_controller = wd_this->wd_get_api( ).
CONCATENATE 'V_MAIN/' lv_view_id INTO lv_target_embed_pos.
* This was present in the source, returning a component usage via create_comp_usage_of_same_type()
* lo_component_usage = wd_comp_controller->get_component( iv_compcnt = ls_post-index ).
lo_view_controller->prepare_dynamic_navigation(
source_window_name = 'W_MAIN'
" Found in the window structure for this View
source_vusage_name = 'V_MAIN_USAGE_0'
source_plug_name = lv_source_plug_name
" target_component_name = '[WDC name]' " Optional?
" target_component_usage = lo_component_usage->name " Optional?
target_view_name = 'V_POSTS'
target_plug_name = 'SET_PARAMS'
target_embedding_position = lv_target_embed_pos ).
" Fill the paramaters. Note that the values should be passed as pointers.
REFRESH lt_parameters.
CLEAR ls_parameter.
ls_parameter-name = zcl_fi_vernot=>gcs_plugs-params-bp.
CREATE DATA lv_param_value LIKE ls_post-bp.
ASSIGN lv_param_value->* TO <lv_param_value>.
<lv_param_value> = ls_post-bp.
ls_parameter-value = lv_param_value.
INSERT ls_parameter INTO TABLE lt_parameters.
" Do the same for the contract.
CLEAR ls_parameter.
ls_parameter-name = zcl_fi_vernot=>gcs_plugs-params-contract.
CREATE DATA lv_param_value LIKE ls_post-contract.
ASSIGN lv_param_value->* TO <lv_param_value>.
<lv_param_value> = ls_post-contract.
ls_parameter-value = lv_param_value.
INSERT ls_parameter INTO TABLE lt_parameters.
" Finally, fire the plug.
wd_this->wd_get_api( )->fire_plug( plug_name = lv_source_plug_name parameters = lt_parameters ).
ENDLOOP.
答案 0 :(得分:2)
此问题不仅限于动态生成视图,而且还要在同一组件的窗口中多次使用特定视图时发生。只创建了一个实例,因此重用非常有限。
唯一的解决方案是将View off分离到自己的Web Dynpro组件,或创建活动WDC的多个组件用法并在动态导航中使用它们。