Gadget Rewriting

Main - GadgetRewriting
Gadget Rewriting
The VF Park rewrites content of gadgets automatically. The rewriting result contains invocations of embedded
proxy server. Developer can include such invocations already when writes a gadget's code.
This rewriting feature is disabled on VF Park Sandbox to avoid any caching there.
VF Park automatically rewrites values of following HTML attributes:
HTML Element
link
script
embed
img
style
input
HTML Attribute
href
src
src
src
url (CSS URI)
src
Gadget XML Source
HTML Rendered within VF Park
<img src="http://www.dvc.cz/gadget/vodafone/logo_ilegalne.gif"
<img src="/apps/gadgets/proxy?url=http%3A%2F%2Fwww.dvc.cz%2Fgadget%2Fvodaf
width="130" height="29" alt="" border="0" />
<input type="image" id="search-button" src="http://www.dvc.cz/gadget/vodafone/button_hledej_orange.gif"
<input type="image" id="search-button" src="/apps/gadgets/proxy?url=http%3
alt="Hledej">
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"></script>
<script src="/apps/gadgets/concat?rewriteMime=text/javascript&gadget=http%
<script src="http://www.google-analytics.com/ga.js" type="text/javascript"></script>
.lichy .pool {
.lichy .pool {
background-image: url("http://www.codeasi.net/gadgets/kina/polozka_back.jpg");
background-image: url("/apps/gadgets/proxy?url=http%3A%2F%2Fwww.codeasi.ne
background-repeat: repeat-x;
background-repeat: repeat-x;
background-color: #d5dfc7;
background-color: #d5dfc7;
}
}
Embeded Proxy Server Reference
The proxy server has following URL: /apps/gadgets/proxy
The proxy server accepts following parameters:
• url - the encoded URL of proxied resource
• gadget - the encoded URL of gadget XML (needed for proper caching)
Example of invocation:
/apps/gadgets/proxy?url=http%3A%2F%2Fwww.dvc.cz%2Fgadget%2Fvodafone%2Flogo_ilegalne.gif&gadget=http%3A%2F%2Fwww.dvc.c
HTTPS Note
The VF Park is operated over HTTPS protocol when user is logged in. When some gadget accesses unsecured
content through the HTTP protocol, web browser displayes appropriate warning. To avoid such behavior
developer should access to unsecured content through the embedded proxy server.
Embedded Proxy Server vs. Proxy API
Embedded proxy server has nothing to do with Proxy API
Page 1 - naposledy upravil Václav Tolar - 2009/11/02 15:48