BSP mobile logon screen using jQuery Mobile

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We know that we can build a Mobile Web Application in an SAP System using SAP BSP and Html5 /Javascript / Css . There are a lot of Javascript Frameworks that help us to create the optimized mobile UI Layer . Most popular frameworks are Sencha Touch , jQuery Mobile, jQTouch ,etc and we can include this frameworks in our Sap BSP application;

these 3 blogs by john.moy3 (Build your first Mobile web app using jQuery Mobile and ABAP - Part 1) describe in a great way how to build our Mobile Web Apps using jQueryMobile ( http://jquerymobile.com ) and this is not the purpose of this blog.

So we can use our BSP Mobile application from iPad , iPhone , Android Devices , etc… I create my BSP Link Shortcut on my iPad Home and I see this logon screen.

Not good for a mobile device user! Not mobile optimized , we need to zoom in,it's not the right logon page for a web mobile application.

Thanks to the Official Documentation ( http://help.sap.com/saphelp_nw70ehp2/helpdata/en/48/3a061a902131c3e10000000a42189d/frameset.htm ) and this great blog by sergio.ferrari2 (BSP/HowTo - Customizing the design of System Logon page in NetWeaver '04 ) we know that we can change the screen layout for each SICF service creating a custom Abap Class , in SICF Bsp service -> Error Pages -> Logon Errors -> System Logon (Configuration) -> Define Service-Specific Settings -> Custom Implementation (Abap Class).

Yeah, now we can build our custom jQuery Mobile Logon Screen creating a new custom class that is a subclass of CL_ICF_SYSTEM_LOGIN !

I found the class CL_ICF_EXAMPLE01_LOGIN that is a good starting point for our custom class , so I copied the example class to ZCL_ICF_JQUERYMOBILE_LOGIN .

In HTM_LOGIN method the standard code builds the Logon Page , here we can insert our custom html code.

This “single page” template http://jquerymobile.com/demos/1.0/docs/pages/page-template.html is my starting point to build our logon page.

Exploring the standard SAP Code in HTM_LOGIN method , I noticed that it uses <table> elements , so we must replace html tables , rows and cells with jQueryMobile DIVs and Attributes such as “header” , “content” and “footer” (anathomy of a mobile “Page”).

The Abap Internal Table me->m_logmessages contain all Logon system messages (warning about SSO , HTTPS , ecc..): i put this messages in a jQueryMobile “collapsible” DIV container (not collapsed by default) , but we are free to build our Layout as we want.

Important: In jQuery Mobile, form submissions are automatically handled using Ajax but in our situation we need to prevent it adding data-ajax="false" attribute to the form element.

Now we can call tcode SICF to set our custom class ZCL_ICF_JQUERYMOBILE_LOGIN

This is the code of my basic HTM_LOGIN method(we should consider other important aspects , for example the “Change Password” button linked to 'htm_change_passwd' method,logon languages , etc..).

Here you can download this basic example of ZCL_ICF_JQUERYMOBILE_LOGIN (slinkee)

method HTM_LOGIN.

*CALL METHOD SUPER->HTM_LOGIN

*  EXPORTING

*    IV_JAVASCRIPT    =

*    IV_HIDDEN_FIELDS =

*  RECEIVING

*    RV_HTML          =

*    .

**A.SPADONI - 27.12.2011 - htm_login Method from CL_ICF_EXAMPLE01_LOGIN

*CLASS.

**A.SPADONI - 27.12.2011 - jquerymobile login html page

  data: lv_msg_item   type bspmsg.

concatenate

'<!DOCTYPE html> '

'<html> '

'<head>'

   '<meta charset="utf-8">'

   '<meta name="viewport" content="width=device-width, initial-scale=1">'

   '<title>jQueryMobile - BSP Logon</title>'

 '<link rel="stylesheet"'

 ' href="http://code.jquery.com/mobile/1.3.0/jquery.mobile-1.3.0.min.css"/>'

   '<script'

    ' src="http://code.jquery.com/jquery-1.9.1.min.js"></script>'

 '<script'

 ' src="http://code.jquery.com/mobile/1.3.0/jquery.mobile-1.3.0.min.js">'

 '</script>'

  '<script language="JavaScript" type="text/javascript">'

             iv_javascript

  '</script>'

 '</head>'     `  <body onLoad="` me->co_js_cookie_check `();">`

  into rv_html.                                             "#EC NOTEXT

  CONCATENATE rv_html

  '<div data-role="page">'

 '<div data-role="header">'

   '<h1>BSP Custom Logon using jQueryMobile</h1>'

 '</div><!-- /header -->'   '<div data-role="content">'  into rv_html.

***********messages data content

  if me->m_logmessages is not initial.

    CONCATENATE rv_html

'<div data-role="collapsible" data-content-theme="e" data-collapsed="'

'false">'

     '<h3>Messages</h3>'  into rv_html.

    loop at me->m_logmessages into lv_msg_item.

      concatenate rv_html '<p>' lv_msg_item-message '</p>' into rv_html.

    endloop.

   CONCATENATE  rv_html '</div>' into rv_html.

  endif.

***********messages data content  - end

*********login FORM

  CONCATENATE rv_html   `<div data-role="fieldcontain"><form name="`

  me->co_form_login `" action="` me->m_sap_application

     `" method="post" data-ajax="false">`

             iv_hidden_fields into rv_html.

  CONCATENATE rv_html

'<div data-role="fieldcontain"><label for="' me->co_sap_user

'">Username:</label>'

'<input type="text" id="' me->co_sap_user

'" name="' me->co_sap_user

'"  value="" placeholder="Username"/></div>'

'<div data-role="fieldcontain"><label for="'

me->co_sap_password '">Password:</label>'

'<input type="password" id="'

me->co_sap_password

'" name="' me->co_sap_password

'" value="" placeholder="Password"/></div>'

`<div data-role="fieldcontain"><a type="submit" data-role="button" data-theme="b" n`

`ame="submit" value="Logon" onclick="`

    me->co_js_submit_login

    `('` me->co_event_login `'); return false;">Logon</a></div>`

    into rv_html.

  CONCATENATE rv_html '</form></div>' into rv_html.

********login FORM - end

  CONCATENATE rv_html

 '  </div><!-- /content -->'

 ' <div data-role="footer">'

    '<h4>Footer content</h4>'

'          </div><!-- /footer -->'

'</div><!-- /page -->'

'</body>'

'</html>'  into rv_html.

 endmethod.