Displaying Your HTML View in a Custom Activity

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Displaying Your HTML View in a Custom Activity

Workflow Form Contains:

»

A text field for every piece of data that you plan to pass back to the Workflow model

(to be saved in a context parameter).

»

A local variable that will hold your HTML view code

»

A display area that references the local parameter containing your HTML view’s code

HTML View Contains:

<style>

div.my_html_view {

position:

relative;

top:

-130px;

left:

-20px;

height:

100%;

width:

800px;

overflow:

scroll;

background-color:

White;

}

</style>

This is the content that will be displayed in place of the

Workflow fields defined in the Custom Activity Designer…<br>

<br>

I can use any HTML features I want, and use JavaScript to pass

data back to the Workflow form<br>

<br>

<input type=“checkbox” value=“Yes” id=“my_checkbox”

onclick=“my_js_function();” /> Here’s a checkbox.

</div>

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Copy values between Workflow form and HTML view

Workflow Form Contains:

Text field named my_approval

Text area named my_note

Display area containing @html_view

HTML View Contains:

<option value=“Approve”>Approve</option>

<option value=“Reject”>Reject</option>

</select>

JavaScript Code:

var v_decision = document.forms['workItemForm'].elements['p_my_approval'].value; var v_note = document.forms['workItemForm'].elements['p_my_note'].value;

document.getElementById('my_dec').value = v_decision; document.getElementById('my_txt').value = v_note; }

function copy_to_workflow(){

var v_decision = document.getElementById('my_dec').value; var v_note = document.getElementById('my_txt').value;

document.forms['workItemForm'].elements['p_my_approval'].value = v_decision; document.forms['workItemForm'].elements['p_my_note'].value = v_note;

} </script>

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HTML Code:

Hit this button to load the notes: <input type=“button” onclick=“load_notes();” /> Notes will be displayed here:

Notes can also load automatically as page is loading:

JavaScript Code:

<script language="javascript"> function cr_req_obj() {

var browser = navigator.appName;

if(browser == "Microsoft Internet Explorer")

return new ActiveXObject("Microsoft.XMLHTTP"); else

return new XMLHttpRequest(); }

var http_req = cr_req_obj(); function load_notes() {

var url_str = ‘https://<your self-service URL and port number>’; var url_str += ‘<database package>.<database procedure>’;

var url_str += ‘?<first variable>=<value>’; var url_str += ‘&<next variable>=<value>’; http_req.open(‘POST', url_str); http_req.onreadystatechange = load_notes_response; http_req.send(null); } function load_notes_response() { if (http_req.readyState == 4) {

var response = http_req.responseText; if(response.indexOf('|' != -1)) {

document.getElementById('note_container').innerHTML = response; document.getElementById('note_container').style.display='block'; }

else

alert('There was a problem with your AJAX request!'); } } </script>

SQL Code:

PROCEDURE ajax_notes IS BEGIN

FOR notes IN( SELECT my_notes FROM my_table ) LOOP

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Form Validation

Create function to hide the Workflow “Complete” button.

Set it to run when page finishes loading:

function hide_complete_button() {

var btn = document.forms['workItemForm'].elements['button_complete'];

btn.style.display='none';

}

window.onload = function(){hide_complete_button};

</script>

Validation code to check form input values:

function validate_form(){

if( … ){

alert(‘You must fix this!’);

document.getElementById(‘problem_field’).style.borderColor=’Red’;

}

else

document.forms['workItemForm'].elements['button_complete'].click();

}

Create your own “Validate Button”

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“Fine Print” Regarding Code Samples

Redistribution and use in source and binary forms, with or without modification, are

permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of

conditions and the following disclaimer.

Redistributions in binary form must reproduce the above copyright notice, this list of

conditions and the following disclaimer in the documentation and/or other materials

provided with the distribution.

Neither the name of Portland State University nor the names of its contributors may be

used to endorse or promote products derived from this software without specific prior

written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR

CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

Displaying Your HTML View in a Custom Activity