Friday, November 7th, 2008
After a few hours work looking into this, this turned out really easy to implement using jQuery and server side PHP programming as follows:
On the client side the following HTML code needs adding to the page:
<form action="/SaveToExcel.php" method="post" target="_blank"
onsubmit='$("#datatodisplay").val( $("<div>").
append( $("#ReportTable").eq(0).clone() ).html() )'>
<input type="image" src="/images/icons/Floppy-48x48.png" width="12" height="12">
<input type="hidden" id="datatodisplay" name="datatodisplay" />
</form>
The jQuery commands were added to the form’s onsubmit event but could easily be in your $(function(){}); fuction
The hard part here was getting all of the <table> HTML code. The standard jQuery .html() command gets the innerHTML and was cutting off the <table> HTML code. Getting all the HTML code was accomplished using the code $(”#datatodisplay”).val( $(”<div>”).append( $(”#ReportTable”).eq(0).clone() ).html() ) which effectively gets the outerHTML of the named HTML object (in this case the table we want to save to excel).
On the server side create a file called’SaveToExcel.php’ and add the following code:
<?php
header("Content-type: application/vnd.ms-excel; name='excel'");
header("Content-Disposition: filename=export.xls");
header("Pragma: no-cache");
header("Expires: 0");
?>
<html>
<head></head>
<body><?=$_REQUEST['datatodisplay']?>
</body>
</html>
Posted in Accessibility, jQuery | No Comments »
Tuesday, July 15th, 2008
Following on my theme for this week, here are the steps to make Wordpress mobile friendly. This assumes you are using a separate URL for your mobile friendly wordpress (such as sitename.mobi):
1 - Buy your domain and park it on your current Wordpress site, so sitename.com and sitename.mobi are generating the same content
2 - Add (or modify) the file /wp-content/themes/yourtheme/functions.php and add the following lines:
<?php
remove_action(’template_redirect’, ‘redirect_canonical’);
function elixir_urlrewrite( $url ) {
if ( strpos( $url, get_bloginfo(”url”,”raw”) ) === false )
return $url ;
$urlparts = parse_url($url) ;
$url = str_replace( $urlparts[scheme] . “://” . $urlparts[host] , “” , $url ) ;
if ( strlen( $url ) == 0 )
$url = “/” ;
return $url ;
}
add_action(’day_link’, ‘elixir_urlrewrite’);
add_action(’feed_link’, ‘elixir_urlrewrite’);
add_action(’month_link’, ‘elixir_urlrewrite’);
add_action(’page_link’, ‘elixir_urlrewrite’);
add_action(’post_link’, ‘elixir_urlrewrite’);
add_action(’the_permalink’, ‘elixir_urlrewrite’);
add_action(’year_link’, ‘elixir_urlrewrite’);
add_action(’category_link’, ‘elixir_urlrewrite’);
add_action(’bloginfo_url’, ‘elixir_urlrewrite’);
?>
This will cause your wordpress installation to rewrite all links to remove sitename.com from them - this stops a mobile visitor always being redirected to the .com site
3 - Modify your .htaccess file and add the following lines (replacing sitename with your site name as applicable):
Options All -Indexes
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} ^sitename\.com$
RewriteRule ^(.*)$ http://www.sitename.com/$1 [R=301,L]
RewriteCond %{HTTP_HOST} ^sitename\.mobi$
RewriteRule ^(.*)$ http://www.sitename.mobi/$1 [R=301,L]
</IfModule>
This replaces the built in ‘redirect_canonical’ so that it handles .com and .mobi correctly.
4 - modify your template so that it changes the doctype for a mobile device. Modify your header.php fie and replace the current ‘doctype’ line as follows:
<?php
function checkmobile(){
// Always mobile enabled on .mobi
if ( strpos( strtolower( $_SERVER['HTTP_HOST'] ) , “.mobi” ) !== false )
return true ;
if(isset($_SERVER["HTTP_X_WAP_PROFILE"])) return true;
if(preg_match(”/wap\.|\.wap/i”,$_SERVER["HTTP_ACCEPT"])) return true;
if(isset($_SERVER["HTTP_USER_AGENT"])){
$uamatches = array(”midp”, “j2me”, “avantg”, “docomo”, “novarra”, “palmos”, “palmsource”, “240×320″, “opwv”, “chtml”, “pda”, “windows\ ce”, “mmp\/”, “blackberry”, “mib\/”, “symbian”, “wireless”, “nokia”, “hand”, “mobi”, “phone”, “cdm”, “up\.b”, “audio”, “SIE\-”, “SEC\-”, “samsung”, “HTC”, “mot\-”, “mitsu”, “sagem”, “sony”, “alcatel”, “lg”, “eric”, “vx”, “NEC”, “philips”, “mmm”, “xx”, “panasonic”, “sharp”, “wap”, “sch”, “rover”, “pocket”, “benq”, “java”, “pt”, “pg”, “vox”, “amoi”, “bird”, “compal”, “kg”, “voda”, “sany”, “kdd”, “dbt”, “sendo”, “sgh”, “gradi”, “jb”, “\d\d\di”, “moto”);
foreach($uamatches as $uastring){
if(preg_match(”/”.$uastring.”/i”,$_SERVER["HTTP_USER_AGENT"])) return true;
}
}
return false;
}
if ( checkmobile() == true &&
strcmp( strtolower( $_SERVER['HTTP_HOST'] ) , “www.sitename.mobi” ) != 0 &&
strcmp( strtolower( $_SERVER['REQUEST_METHOD'] ) , “get” ) == 0 &&
$_SERVER['SERVER_PORT'] == 80 )
{
header(”HTTP/1.1 301 Moved Permanently”);
header(”Location: http://www.sitename.mobi” . $_SERVER['REQUEST_URI']);
exit();
}
if ( checkmobile() == true )
{ ?>
<!DOCTYPE html PUBLIC “-//WAPFORUM//DTD XHTML Mobile 1.0//EN” “http://www.openmobilealliance.org/tech/DTD/xhtml-mobile10.dtd“>
<?php
}
else
{ ?>
<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd“>
<?php
}
?>
5 - view with a mobile device. This is when you will need to change your CSS and page layout to take into account the limitations of the mobile environment. THis was covered in previous posts:
Making Your Site Mobile Friendly - CSS
To see this in action visit http://www.fionndownhill.mobi/
Posted in Accessibility, Web Design and Development | 6 Comments »
Tuesday, July 8th, 2008
CSS is vitally important in making your site mobile ready. I ended up making 3 CSS media sections in one CSS file:
- @media screen - contains all the CSS positioning informaiton, font sizes needed for the screen, etc.
- @media handheld - the CSS for handhelds. This removed a lot of unneeded parts of the screen (footer text), and doesn’t include positioning information.
- @media print - CSS for when the page is printed. This changes the font size for printing, labels links for printing, turns off unnecessary navigation (left hand menus, footer, etc) and anything else to make your site look good when printed.
All CSS for these sections should be contained within curly brackets {}
@media print{
*{
font-size: 12pt;
font-family:Georgia, "Times New Roman", Times, serif;
}
a{
color: #520;
background: transparent;
font-weight: bold;
text-decoration: underline;
}
}
All of these sections can be in their own CSS files and included using the include syntax:
<style>
@import url("print.css") print;
</style>
or
<LINK rel="stylesheet" type="text/css" media="print" href="print.css">
Posted in Accessibility | 1 Comment »
Thursday, July 3rd, 2008
Setting up CSS for mobile phones is easy enough but what about modifying your site to handle these users. Considering the total people using a mobile phone to surf in a business environment is minimal so you want to minimize the additional webmaster time spent supporting this implementation.
I found this script at http://www.brainhandles.com/2007/10/15/detecting-mobile-browsers/ that detects mobile phones. It’s very simple to implement. I call this script and use it to decide what parts of a page to send to the visitor. For example the top nav on our main site is graphics, by checking the visitor is mobile I output an unordered list of navigation links.
Posted in Accessibility | No Comments »
