By default, the function toolbar is not displayed in the new ALV Display. It must be activated. The functions object is retrieved from the ALV Object. In order to activate the complete function toolbar, the set_all( ) method of the function object must be called.
DATA lr_functions_list TYPE REF TO cl_salv_functions_list.
lr_functions_list = lr_alv_object->get_functions( ).
lr_functions->set_all( ).
The new ALV Display model based on the class CL_SALV_TABLE provides various functionalities similar to the old ALV Display. But the data fields of the ALV Table are not directly editable.
There are two Display modes for the new SAP ALV Display based on class CL_SALV_TABLE.
Full Screen mode: There is no need of container and Dynpro.
Container mode: It is created through the Dynpro and container.
Full Screen mode: The following steps are necessary to construct an SAP ALV Display based on the class CL_SALV_TABLE.
DATA lt_contact TYPE TABLE OF ztt_db_table2.
SELECT * FROM ztt_db_table2 INTO TABLE lt_contact.
The static method ‘FACTORY’ of the class CL_SALV_TABLE returns the object of class CL_SALV_TABLE as an exporting parameter. This is the instance of the ALV object.
DATA lr_salv_table TYPE REF TO cl_salv_table.
CALL METHOD cl_salv_table => factory
IMPORTING
r_salv_table = lr_salv_table
CHANGING
t_table = lt_contact.
Finally the ALV List is displayed by calling the Display method of the ALV object.
lr_salv_table -> Display ().
Container mode :
In order to display the ALV list in container mode, you need a Dynpro with a container.
The following steps are written to Display the ALV.
DATA lr_container TYPE REF TO cl_gui_custom_container.
CREATE OBJECT lr_container
EXPORTING
Container_name = ‘SALV_CONTAINER’.
In this mode as well, the static method ‘FACTORY’ of the class cl_salv_table is used to create the ALV object. The container object is given as an exporting parameter in the method call. The Internal table with the ALV contents is specified in the changing parameter.
DATA lr_salv_table TYPE REF TO cl_salv_table.
CALL METHOD cl_salv_table => factory
EXPORTING
r_container = lr_container
IMPORTING
r_salv_table = lr_salv_table
CHANGING
t_table = lt_contact.
lr_salv_table -> display ().
CALL SCREEN 1000.
The user can be able to change the layout such as hiding columns, sorting specific columns or adding a filter in ALV Table List. The user can also be able to save the layouts of ALV Report in the toolbar. In order to enable this feature, the user must activate this option programmatically.
There are two key steps to activate the save layout option in ALV table list.
It contains the details of the report and username to which the layout can be saved.
DATA ls_variant TYPE disvariant.
ls_variant-report = sy-repid.
ls_variant-username = sy-uname.
There are different saving options such as ‘U’, ‘X’, ‘A’ for the exporting parameter i_save.
U: User defined layout can be saved in this option. The layout cannot be seen by other users.
X: It is the Global layout. Other users can also see this layout.
A: The user can save both user defined layout and Global layout.
Let us look at the following SET_TABLE_FOR_FIRST_DISPLAY Method.
CALL METHOD lr_gui_alv_grid -> set_table_for_first_display
EXPORTING
is_variant = ls_variant.
is_save = ‘U’.
If you are having more than one ALV in the same program, then each ALV must be uniquely differentiated through the field HANDLE. The field HANDLE hold a ID with four characters which is unique. Each ALV variant is differentiated through this unique ID.
The old ALV Display model created using CL_GUI_ALV_GRID enables the user to colour particular cells of ALV Display. Every colour is uniquely identified through a colour code. The following table illustrates the different colour codes.
| Type of colour | COL | INT | INV |
| Orange | 7 | 1 | 1 |
| Green | 5 | 1 | 0 |
| Red | 6 | 1 | 0 |
| Yellow | 3 | 1 | 0 |
| Blue | 1 | 1 | 0 |
The above fields COL,INT,INV are the elements of [lvc_s_scol – COLOR].
There are three key steps involved in colouring a particular cell / column of a SAP ALV Display.
The internal table which contains the data of the ALV Display is extended with the additional column ‘lvc_t_scol’. The table lvc_t_scol holds the details of the colour code. Let us look at the following structure extension.
TYPES: BEGIN OF ty_contact.
INCLUDE STRUCTURE ztt_db_table2.
TYPES: cell_with_color TYPE lvc_t_scol,
END OF ty_contact.
DATA lt_contact TYPE TABLE OF ty_contact.
The ALV Table recognizes the newly added field of type ‘LVC_T_SCOL’ through the field ‘CTAB_FNAME’ of the layout structure.
DATA ls_layout TYPE lvc_s_layo.
ls_layout-ctab_fname = ‘CELL_WITH_COLOR’.
the above value must be specified in capital letters. otherwise the ALV Grid cannot recognize the newly added field.
The final step is to assign the colour codes to the cells of the ALV Table Display. The column is mentioned through the field ‘FNAME’ of the structure ‘lvc_s_scol’.
FIELD-SYMBOLS <ls_contact> TYPE ty_contact.
DATA ls_cell_color TYPE lvc_s_scol.
LOOP AT lt_contact ASSIGNING <ls_contact> WHERE age > 30.
ls_cell_color-fname = ‘CONTACT_NAME’.
ls_cell_color-col = 7.
ls_cell_color-int= 1.
ls_cell_color-inv = 1.
APPEND ls_cell_color TO <ls_contact>-cell_with_color.
“The internal table is filled with color code details.
ENDLOOP.
The above code snippet sets the colour of the ALV Cells. It is constrained to the contacts whose age are more than 30. The column specified here to be colored is ‘CONTACT_NAME’.
The old SAP ALV Display facilitates the user to color the cells, lines of record, columns etc. Every color is uniquely identified through a colour code. The following table illustrates the different colour codes.
| Type of Color | Code |
| Blue | C110 |
| Yellow | C310 |
| Orange | C711 |
| Green | C510 |
| Red | C610 |
There are three important steps involved in colouring a line of record.
In order to colour the complete line of record, a new field must be added. This field is of Data type c. The field holds the colour code of the particular line of record.
TYPES: BEGIN OF ty_contact.
INCLUDE STRUCTURE ztt_db_table2.
TYPES: line_of_record (4) TYPE c,
END OF ty_contact.
DATA lt_contact TYPE TABLE OF ty_contact.
The ALV List can be able to identify the newly added field (like above) through the field ‘INFO_FNAME’ of layout.
The Assignment is as shown below.
DATA ls_layout TYPE lvc_s_layo.
ls_layout-info_fname = ‘LINE_OF_RECORD’.
Please remember that the value assigned must be in capital letters. Otherwise it will not be able to identify correctly.
The last and final step involved is to colour each line of record with the unique colour code. Each line of record is read through ‘LOOP AT’ loop. The Rows can be filtered through additional constraints. Let us look at the following example.
FIELD-SYMBOLS <ls_contact> TYPE ty_contact.
LOOP AT lt_contact ASSIGNING <ls_contact> WHERE contact_age > 30.
<ls_contact> – line_of_record = ‘C310’.
ENDLOOP.
As shown in above code, each line of records in SAP ALV List is set with the colour code ‘C310’. This colour code indicates the colour ‘YELLOW’.
The cell type of CL_GUI_ALV_GRID->MC_STYLE_HOTSPOT enables the user to navigate to a new page or session. It can also open a new window or display a list. It appears as a Link in the SAP ALV List.
The following steps are necessary to implement the HOTSPOT / LINKS
TYPES: BEGIN OF ty_contact_link.
INCLUDE STRUCTURE ztt_db_table2.
TYPES: fieldstyle TYPE lvc_t_styl,
END OF ty_contact_link.
DATA lt_contact TYPE TABLE OF ty_contact_link.
DATA ls_style TYPE lvc_s_styl.
FIELD SYMBOLS <ls_contact> TYPE ty_contact_link.
LOOP AT lt_contact ASSIGNING <ls_contact>.
ls_style-fieldname = ‘CONTACT_NAME’.
ls_style-style = cl_gui_alv_grid => mc_style_hotspot.
APPEND ls_style TO <ls_contact>-fieldstyle.
ENDLOOP
ls_layout-stylename = ’FIELDSTYLE’.
Note: The hotspot can be activated throught the field HOTSPOT of field catalog. The field HOTSPOT of the field catalog is set to ‘X’. The key advantage of this field is that the user does not have to add any additional field to the Internal table.
Button: The cell type of cl_gui_alv_grid=>mc_style_button resembles as a button in the user interface of the SAP ALV list. As the user clicks this button, any event can be executed like opening up a new window.
Dropdown List: It is used to provide a list of values as a dropdown list.
IMPLEMENTATION OF BUTTON:
The following steps are necessary to implement the Button
TYPES: BEGIN OF ty_contact.
INCLUDE STRUCTURE ztt_db_table2.
TYPES: fieldstyle TYPE lvc_t_styl.
END OF ty_contact.
DATA lt_contact TYPE TABLE OF ty_contact.
DATA ls_style TYPE lvc_s_styl.
FIELD_SYMBOLS <ls_contact> TYPE ty_contact.
LOOP AT lt_contact ASSIGNING <ls_contact>.
ls_style-fieldname = ‘CONTACT_NAME’.
ls_style-style = cl_gui_Alv_grid =>mc_style_button.
APPEND ls_style TO <ls_contact>-fieldstyle.
ENDLOOP.
ls_layout-stylename = ’FIELDSTYLE’.
It is used to provide a list of values as a Drop down List.
There are three important steps involved in setting the cell as a drop down list.
Handle: The field Handle holds the value, which can be used to refer to the value mentioned in the field drdn_hndl of field catalog. Therefore it connects to the field catalog.
Value: It is considered as the Display name. It holds the value to be used in the Drop down list. If the field DRDN_ALIAS of the field catalog is initial, then this value is considered for the Drop down list.
INT_VALUE: It is considered as the Technical name. It also holds the value to be displayed in the Drop down List. If the field DRDN_ALIAS of the field catalog is ‘X’, then the value from the int_value field is used in the Drop down list.
Let us consider the following example:
DATA lt_dral TYPE lvc_t_dral.
DATA ls_dral TYPE lvc_s_dral.
ls_dral-handle = 3.
ls_dral-value = ‘Street1_value’.
ls_dral-int_value = ‘Street1_int_value’.
APPEND ls_dral TO lt_dral.
ls_dral-value = ‘Street2_value’.
ls_dral-int_value = ‘Street2_int_value’.
APPEND ls_dral TO lt_dral.
FIELD-SYMBOLS <ls_field_cat> TYPE lvc_s_fcat.
LOOP AT lt_field_cat ASSIGNING <ls_field_cat> WHERE fieldname = ‘CONTACT ADDRESS’.
<ls_field_cat> – drdn_hndl = 3.
<ls_field_cat> – drdn_alias = ‘X’.
ENDLOOP.
In the above field catalog assignment, the field ‘DRDN_ALIAS’ is set to ‘X’, which means the value of field ‘INT_VALUE’ is considered in the Drop down list. The value of field ‘VALUE’ is ignored. If the field ‘DRDN_ALIAS’ is initial like <ls_field_cat> – drdn_alias = ‘ ‘, Then the value of field ‘VALUE’ is considered in the Drop down list.
The method set_drop_down_table of the ALV object is used to set the drop down values (Internal table) to the partical column ‘CONTACT_ADDRESS’ of the ALV List.
CALL METHOD lr_gui_alv_grid -> set_drop_down_table(
EXPORTING
it_drop_down_alias = lt_dral ).
The above method call must happen before the method ‘SET_TABLE_FOR_FIRST_DISPLAY’ is called.
The column names can be changed with the help of the fields REPTEXT, SCRTEXT_L, SCRTEXT_M and SCRTEXT_L of field catalog. If you wish to use only text of field ‘scrtext_l’, then fill the text only in this field ‘SCRTEXT_L’. The other texts can be ignored as the ALV takes the filled text automatically.
FIELD-SYMBOLS: <ls_field_cat> TYPE lvc_s_fcat.
LOOP AT lt_field_cat ASSIGNING <ls_field_cat> WHERE fieldname = ‘CONTACT_ADDRESS’.
<ls_field_cat> – reptext = ‘New Contact address’.
<ls_field_cat> – scrtext_l = ‘New Contact add’.
<ls_field_cat> – scrtext_m = ‘New Contact’.
<ls_field_cat> – scrtext_s = ‘New Con’.
ENDLOOP.
The column can be deleted from the SAP ALV List using the field catalog. Column deletion is constrained based on the fieldname of the field catalog.
Let us look at the following example:
DELETE lt_field_cat WHERE fieldname = ‘Contact_address’.
Once it is deleted through the field catalog, it cannot be further added using the layout button of the toolbar.
