<!-- https://abap2ui5.github.io/docs/tutorials/walkthrough/step-7 -->

# Step 7: Popups

Clicking a row now opens a dialog to edit the invoice's quantity. A popup is
built with the same builder and the same verbs as the view — only the root
element changes (`core:FragmentDefinition` instead of `mvc:View`), and it is
handed to `popup_display( )` while the main view stays untouched behind it:

```abap
CLASS zcl_app_walkthrough DEFINITION PUBLIC.
  PUBLIC SECTION.
    INTERFACES z2ui5_if_app.

    TYPES:
      BEGIN OF ty_s_invoice,
        product  TYPE string,
        supplier TYPE string,
        quantity TYPE string,
      END OF ty_s_invoice.

    DATA t_invoices TYPE STANDARD TABLE OF ty_s_invoice WITH EMPTY KEY.
    DATA s_edit     TYPE ty_s_invoice.

  PROTECTED SECTION.
  PRIVATE SECTION.
ENDCLASS.

CLASS zcl_app_walkthrough IMPLEMENTATION.
  METHOD z2ui5_if_app~main.

    IF client->check_on_navigated( ).

      t_invoices = VALUE #(
          ( product = `Pineapple`    supplier = `ACME`          quantity = `21` )
          ( product = `Milk`         supplier = `Green Growers` quantity = `4`  )
          ( product = `Canned Beans` supplier = `Corner Deli`   quantity = `3`  )
          ( product = `Salad`        supplier = `Green Growers` quantity = `2`  )
          ( product = `Bread`        supplier = `Corner Deli`   quantity = `1`  ) ).

      DATA(view) = z2ui5_cl_ui5_view_builder=>factory(
          )->ele( n = `View` ns = `mvc`
              )->a( n = `xmlns`     v = `sap.m`
              )->a( n = `xmlns:mvc` v = `sap.ui.core.mvc`

              )->ele( `Shell`
                  )->ele( `Page`
                      )->a( n = `title` v = `Walkthrough - Step 7`

                      )->ele( `List`
                          )->a( n = `headerText` v = `Invoices`
                          )->a( n = `items`      v = client->_bind( t_invoices )

                          )->ele( `items`
                              )->tag( `StandardListItem`
                                  )->a( n = `title`       v = `{PRODUCT}`
                                  )->a( n = `description` v = `{SUPPLIER}`
                                  )->a( n = `info`        v = `{QUANTITY}`
                                  )->a( n = `type`        v = `Active`
                                  )->a( n = `press`       v = client->_event( val   = `EDIT`
                                                                              t_arg = VALUE #( ( `${PRODUCT}` ) ) ) ).

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

    ELSEIF client->check_on_event( `EDIT` ).

      s_edit = VALUE #( t_invoices[ product = client->get_event_arg( ) ] OPTIONAL ).

      DATA(popup) = z2ui5_cl_ui5_view_builder=>factory(
          )->ele( n = `FragmentDefinition` ns = `core`
              )->a( n = `xmlns`      v = `sap.m`
              )->a( n = `xmlns:core` v = `sap.ui.core`

              )->ele( `Dialog`
                  )->a( n = `title` v = |Edit { s_edit-product }|

                  )->ele( `content`

                      )->tag( `Label`
                          )->a( n = `text` v = `Quantity`
                      )->tag( `Input`
                          )->a( n = `value` v = client->_bind( s_edit-quantity )

                  )->end(

                  )->ele( `buttons`

                      )->tag( `Button`
                          )->a( n = `text`  v = `Cancel`
                          )->a( n = `press` v = client->_event( `CANCEL` )
                      )->tag( `Button`
                          )->a( n = `text`  v = `Save`
                          )->a( n = `press` v = client->_event( `SAVE` )
                          )->a( n = `type`  v = `Emphasized` ).

      client->popup_display( popup->stringify( ) ).

    ELSEIF client->check_on_event( `SAVE` ).

      t_invoices[ product = s_edit-product ]-quantity = s_edit-quantity.
      client->popup_destroy( ).
      client->message_toast_display( |{ s_edit-product } updated.| ).

    ELSEIF client->check_on_event( `CANCEL` ).

      client->popup_destroy( ).

    ENDIF.

  ENDMETHOD.
ENDCLASS.
```

## What Is New

- **`s_edit` is the popup's model.** The `EDIT` handler copies the clicked
  row into it, and the dialog's input binds to `s_edit-quantity` — by the
  time `SAVE` arrives, the attribute already holds the new value.
- **`popup_display( )` / `popup_destroy( )`** show and close the dialog. The
  main view is never rebuilt — it waits behind the popup.
- **No refresh call after `SAVE`.** The handler changes `t_invoices` and
  does nothing else: every roundtrip that changed bound data pushes the new
  model to the browser by itself, and the list updates.

Popovers and message boxes are covered under
[Popup, Popover](/cookbook/popup_popover/popup).

The app is complete — one last step separates it into the structure real
apps use.

<!-- samples:start (generated by scripts/link-samples.mjs — do not edit) -->

## Working Samples

Complete apps from the [sample catalog](https://abap2ui5.github.io/playground/samples/)
that use what this page describes. Each is a single class in [abap2UI5/samples](https://github.com/abap2UI5/samples)
unless its row names another of the three sample repositories — pull that repository with
[abapGit](https://abapgit.org) and start the class with `?app_start=<class>`.

| Sample | Class |
|---|---|
| Ways to Open a Dialog (A) | [`Z2UI5_CL_SMP_APP_012`](https://github.com/abap2UI5/samples/blob/main/src/01/z2ui5_cl_smp_app_012.clas.abap) |

<!-- samples:end -->