Table

The class

" @keywords filter server side form growing where
" @summary Filters table rows in the BACKEND from a form above it, so the WHERE runs where the data is.
" @docs https://abap2ui5.github.io/docs/cookbook/model/tables
CLASS z2ui5_cl_smp_app_045 DEFINITION PUBLIC.

  PUBLIC SECTION.
    INTERFACES z2ui5_if_app.

    TYPES:
      BEGIN OF ty_s_row,
        count    TYPE i,
        value    TYPE string,
        descr    TYPE string,
        icon     TYPE string,
        info     TYPE string,
        checkbox TYPE abap_bool,
      END OF ty_s_row.
    DATA t_tab TYPE STANDARD TABLE OF ty_s_row WITH EMPTY KEY.

    DATA mv_info_filter TYPE string.

  PROTECTED SECTION.
    DATA client TYPE REF TO z2ui5_if_client.

    METHODS refresh_data.
    METHODS view_display.

  PRIVATE SECTION.
ENDCLASS.


CLASS z2ui5_cl_smp_app_045 IMPLEMENTATION.

  METHOD refresh_data.

    " rebuilt from scratch on every call - it runs on the init AND on every
    " filter press, and without the reset each press appended another 1000
    " rows before the filter deleted the ones it did not want
    t_tab = VALUE #( ).
    DO 1000 TIMES.
      DATA(ls_row) = VALUE ty_s_row( count = sy-index  value = `red`
        info = COND #( WHEN sy-index < 50 THEN `completed` ELSE `uncompleted` )
        descr = `this is a description` checkbox = abap_true ).
      INSERT ls_row INTO TABLE t_tab.
    ENDDO.

  ENDMETHOD.


  METHOD z2ui5_if_app~main.

    me->client = client.
    IF client->check_on_init( ).
      refresh_data( ).
      view_display( ).
    ELSEIF client->check_on_navigated( ).
      view_display( ).
    ELSEIF client->check_on_event( `FILTER_INFO` ).

      refresh_data( ).

      IF mv_info_filter IS NOT INITIAL.
        DELETE t_tab WHERE info <> mv_info_filter.
      ENDIF.
    ENDIF.

  ENDMETHOD.


  METHOD view_display.

    DATA(page) = z2ui5_cl_ui5_view_builder=>factory(
        )->ele( n = `View` ns = `mvc`
            )->a( n = `displayBlock` v = `true`
            )->a( n = `height`       v = `100%`
            )->a( n = `xmlns`        v = `sap.m`
            )->a( n = `xmlns:mvc`    v = `sap.ui.core.mvc`
            )->a( n = `xmlns:form`   v = `sap.ui.layout.form`
            )->ele( `Shell`
                )->ele( `Page`
                    )->a( n = `title`          v = `abap2UI5 - Table - Filter Rows in the Backend`
                    )->a( n = `showNavButton`  b = client->check_app_prev_stack( )
                    )->a( n = `navButtonPress` v = client->_event_nav_app_leave( ) ).

    page->tag( `MessageStrip`
        )->a( n = `text`     v = `A growing, scrollable table of 1000 rows filtered on the backend: type completed or ` &&
                   `uncompleted into Info and press filter - the backend rebuilds the rows and deletes every one ` &&
                   `whose Info differs. An empty Info shows all rows again.`
        )->a( n = `type`     v = `Information`
        )->a( n = `showIcon` b = abap_true
        )->a( n = `class`    v = `sapUiSmallMargin` ).

    page->ele( n = `SimpleForm` ns = `form`
        )->a( n = `title`    v = `Filter`
        )->a( n = `editable` b = abap_true
        )->ele( n = `content` ns = `form`
            )->tag( `Label`
                )->a( n = `text` v = `Info`
            )->tag( `Input`
                )->a( n = `value`       v = client->_bind( mv_info_filter )
                )->a( n = `placeholder` v = `completed or uncompleted`
            )->tag( `Button`
                )->a( n = `press` v = client->_event( `FILTER_INFO` )
                )->a( n = `text`  v = `filter` ).

    DATA(tab) = page->ele( `ScrollContainer`
        )->a( n = `height`   v = `70%`
        )->a( n = `vertical` b = abap_true
        )->ele( `Table`
            )->a( n = `items`               v = client->_bind( t_tab )
            )->a( n = `growing`             b = abap_true
            )->a( n = `growingThreshold`    v = `20`
            )->a( n = `growingScrollToLoad` b = abap_true
            )->a( n = `sticky`              v = `ColumnHeaders,HeaderToolbar` ).

    tab->ele( `headerToolbar`
        )->ele( `OverflowToolbar`
            )->tag( `ToolbarSpacer` ).

    tab->ele( `columns`
        )->ele( `Column`
            )->tag( `Text`
                )->a( n = `text` v = `Color`
        )->end(
        )->ele( `Column`
            )->tag( `Text`
                )->a( n = `text` v = `Info`
        )->end(
        )->ele( `Column`
            )->tag( `Text`
                )->a( n = `text` v = `Description`
        )->end(
        )->ele( `Column`
            )->tag( `Text`
                )->a( n = `text` v = `Checkbox`
        )->end(
        )->ele( `Column`
            )->tag( `Text`
                )->a( n = `text` v = `Counter` ).

    tab->ele( `items`
        )->ele( `ColumnListItem`
            )->ele( `cells`
                )->tag( `Text`
                    )->a( n = `text` v = `{VALUE}`
                )->tag( `Text`
                    )->a( n = `text` v = `{INFO}`
                )->tag( `Text`
                    )->a( n = `text` v = `{DESCR}`
                )->tag( `CheckBox`
                    )->a( n = `selected` v = `{CHECKBOX}`
                    )->a( n = `enabled`  b = abap_false
                )->tag( `Text`
                    )->a( n = `text` v = `{COUNT}` ).

    client->view_display( page->stringify( ) ).

  ENDMETHOD.

ENDCLASS.