For the longest time I am have been using Ext JS to write the Administration Tools for the Indianapolis Motor Speedway and the Indy Racing League where I work. Some of the tools required uploading of large files to where I would use the SWFUpload library to achieve this functionally. With the introduction of Flash 10 to where you can not have JavaScript call the method to open the dialog box any more this presented a problem. The generally accepted workaround is to have the flash object be transparent and over the button but this doesn’t allow the button to have events or allow you to do hover overs and the such, Until Now.
I spent a few hours working on this to get the example working to where you still have the basic functionally of the button (events and hover) but you still get the flash dialog to open. What I did to achieve this is place the flash object over the underlying <button> that is in the Ext Button.
Here is my html code:
< !DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Flash Ext JS Button</title>
<link href="/js/ext2.2/css/ext-all.css" media="screen" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="/js/ext2.2/ext-base.js"></script>
<script type="text/javascript" src="/js/ext2.2/ext-all.js"></script>
<script type="text/javascript" src="/js/swfupload/swfupload.js"></script>
<script type="text/javascript" src="/js/swfupload/plugins/swfupload.swfobject.js"></script>
<script type="text/javascript" src="/js/swfupload/plugins/swfupload.queue.js"></script>
<script type="text/javascript" src="./button.js"></script>
<style type="text/css">
.swfupload {
position: absolute;
z-index: 1;
}
</style>
</meta></head>
<body>
<div style="padding: 20px;">
<div id="btnHolder"></div>
<br /><br />
<div id="btnEvent"></div>
</div>
</body>
</html>
button.js file:
Ext.onReady(function(){
new Ext.Button({
renderTo: 'btnHolder',
id : 'btnClick',
text: 'Open Download Dialog',
listeners : {
'click' : function(){
Ext.fly('btnEvent').update('Button Click Fired');
(function(){
Ext.fly('btnEvent').update();
}).defer(2000);
},
'render' : function(btn) {
Ext.get('btnClick').child('em').insertFirst({tag: 'span', id: 'btnUploadHolder'});
SWFUpload.onload = function () {
var settings = {
flash_url : "/js/swfupload/swfupload.swf",
upload_url: "/upload/postfile", // Relative to the SWF file
file_size_limit : "20 MB",
file_types : "*.jpg",
file_types_description : "Image Files",
file_upload_limit : 20,
file_queue_limit : 20,
debug: false,
// Button Settings
button_placeholder_id : "btnUploadHolder",
button_width: Ext.get('btnClick').child('button').getWidth(),
button_height: Ext.get('btnClick').child('button').getHeight(),
button_cursor : SWFUpload.CURSOR.HAND,
button_window_mode : SWFUpload.WINDOW_MODE.TRANSPARENT,
// SWFObject settings
minimum_flash_version : "9.0.28"
};
swfu = new SWFUpload(settings);
};
}
}
});
});
Basically what I do is have it insert the flash object on the render event of the button or the Ext Component that contains the button I want to render it to.
Click here for a working sample
Let me know of any questions in the comments.
Nice article. This update by Adobe has really annoyed me and killed several of my flash based things. They’ve also done the same for clipboard access
Exactly what I was looking for. Great writeup and clever idea. Props!
Hi:
This does not work on Chrome.
The problem is button_window_mode : SWFUpload.WINDOW_MODE.TRANSPARENT.
I´m trying to find a solution to this. Do you have an idea?
Thanks in advance.
bye…
I have not tested in Chrome yet as my primary development at home is Mac and Linux. I will check when i get into work and post an update if I find one.
This does not work on Safari too
Yes it’s a bug with webkit so the affected browsers are Safari and Google Chrome.
It doesn’t work for me. On my machine, the SWFUpload.onload is invoked before the render function is handled. Do you have a smart solution for this problem?
Unfortunately I do not as I can not reproduce the error. I will look into this more when I get some time.