Double click image to upload

Dev Shed Forums Sponsor:

May 9th, 2008, 09:19 AM

bonechair

Contributing User

Join Date: Apr 2001

Location: Cape Town

Posts: 469

Time spent in forums: 9 h 44 m 33 sec
Reputation Power: 10

Double click image to upload

Hi I is possible to double click an image and then get it to return the browse on this:
<input type="file" size="40" name="datafile"/>
Then obviously hiding it to.

__________________
http://www.capeseo.com

May 9th, 2008, 01:16 PM

Ebot

Meatball Surgeon

Join Date: Jul 2004

Location: Elbow deep in code

Posts: 1,040

Folding Points: 10015 Folding Title: Novice Folder

Time spent in forums: 1 Week 3 Days 3 h 37 m 17 sec
Reputation Power: 462

I'm not quite sure what you asking. you want to set the value of your input when someones double clicks? Or do you want the broswer to go whereever the value of your input is?

__________________
The liver is evil and must be punished!

May 10th, 2008, 07:27 AM

bonechair

Contributing User

Join Date: Apr 2001

Location: Cape Town

Posts: 469

Time spent in forums: 9 h 44 m 33 sec
Reputation Power: 10

No I want to choose a file for upload when I double click

May 10th, 2008, 09:53 AM

lnxgeek

I AM A GOLDEN GOD

Join Date: Apr 2003

Location: cannot find symbol: method showLocation()

Posts: 5,278

Time spent in forums: 1 Month 1 Day 21 h 17 m 36 sec
Reputation Power: 564

Double click what? The image? How (or why) would you upload an image that was already on the server?

__________________
BookMooch.com : Give books away. Get books you want.

May 11th, 2008, 10:57 AM

bonechair

Contributing User

Join Date: Apr 2001

Location: Cape Town

Posts: 469

Time spent in forums: 9 h 44 m 33 sec
Reputation Power: 10

It's for a cms to change the picture. Double click picture and then that opens the small file browse window. ondblclick='??' Is there a function for this?

May 11th, 2008, 02:48 PM

ktoz

Contributing User

Join Date: Apr 2003

Posts: 420

Time spent in forums: 1 Week 2 Days 3 h 45 m 42 sec
Reputation Power: 25

This isn't complete yet (I couldn't get 'click()' or 'dispatchEvent()') working in Firefox), but it does summon a choose file dialog in Safari when you double click on a photo.

Perhaps you (or someone else) could figure out how to make it cross-browser compatible.

html Code:

Original - html Code


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Strict//EN">
<html>
    <head>
        <title>File Chooser</title>
        <script language='javascript'>
        
            function JSChooseFile()
            {
                var evt   = document.createEvent('MouseEvent');
                var node        = document.createElement('input');
                
                // init evt and node attributes
                evt.initMouseEvent('click', true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);    
                node.setAttribute('type', 'file');
                node.style.visibility   = 'hidden';
                
                // add temporary input field to document
                document.body.appendChild(node);
                
                // NOTE: alert get summoned before user selects a file so
                // will need some sort of setInterval to check for non nil node.value
                if (node.click())
                {
                    alert(node.value);
                }
                else if (node.dispatchEvent(evt))
                {
                    alert(node.value);
                }
                
                // remove temporary input field from document
                document.body.removeChild(node);
            }
        </script>
    </head>
    <body>  
        <img src='http://www.focuspocus.org/photodata/0124_jellyfish.jpg' ondblclick='JSChooseFile()'>
    </body>
</html>

Last edited by ktoz : May 11th, 2008 at 02:58 PM.

May 11th, 2008, 02:50 PM

lnxgeek

I AM A GOLDEN GOD

Join Date: Apr 2003

Location: cannot find symbol: method showLocation()

Posts: 5,278

Time spent in forums: 1 Month 1 Day 21 h 17 m 36 sec
Reputation Power: 564

Yes, there is an ondblclick event, did you check Google?

May 11th, 2008, 07:33 PM

ktoz

Contributing User

Join Date: Apr 2003

Posts: 420

Time spent in forums: 1 Week 2 Days 3 h 45 m 42 sec
Reputation Power: 25

I took another crack at it and included an interval that tests when the node.value contains a file path. It still only works in Safari. Firefox seems to have either intentionally disabled invoking 'click()' programatically or it has a bug. Not sure which.

html Code:

Original - html Code


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Strict//EN">
<html>
    <head>
        <title>File Chooser</title>
        <script language='javascript'>
        
            function JSChooseFile(inEvent)
            {
                var t      = this;
                
                t.target    = inEvent.target;
                t.node    = document.createElement('input');
                
                t.node.setAttribute('type', 'file');
                t.node.style.visibility  = 'hidden';
                
                document.body.appendChild(t.node);
                
                t.node.click();
                
                t.interval  = setInterval(function() { t.checkValue(); }, 100);
            }
            
            JSChooseFile.prototype.checkValue = function()
            {
                var t      = this;
                
                if (t.node.value != '')
                {
                    clearInterval(t.interval);
                    t.url   = t.node.value.replace(/\s/g, '%20'); // replace spaces with '%20'
                    document.body.removeChild(t.node);
                    
                    alert(t.url);
                    // you'll need to add XMLHTTPRequest code here 
                    // to upload the file to a server script
                }
            }
            
        </script>
    </head>
    <body>  
        <img src='http://www.focuspocus.org/photodata/0124_jellyfish.jpg' ondblclick='new JSChooseFile(event)'>
    </body>
</html>

You'll still need to upload the file to a server script using XMLHTTPRequest, which will need to put it in a place that is accessible to the page, but this gets you a little closer.

May 13th, 2008, 04:24 AM

ktoz

Contributing User

Join Date: Apr 2003

Posts: 420

Time spent in forums: 1 Week 2 Days 3 h 45 m 42 sec
Reputation Power: 25

Firefox bug

The inability to call node.click() from a Javascript in Firefox is a known bug that has been around for more than eight years. There appear to be a group of purists on the Mozilla team who have dug in their heels about allowing Javascripters the ability to programatically invoke the file chooser dialog and are stubbornly preventing it from being implemented.

The dark side of open source - individuals who refuse to implement a feature out of ideological purity.

I think you're out of luck with this one unless you can restrict your users to only use Safari..

Last edited by ktoz : May 13th, 2008 at 04:45 AM.

Viewing: Dev Shed Forums > Web Design > JavaScript Development > Double click image to upload

« Previous Thread | Next Thread »

Thread Tools	Search this Thread
Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts vB code is On Smilies are On [IMG] code is On HTML code is Off

View Your Warnings | New Posts | Latest News | Latest Threads | Shoutbox

Forum Jump

Free IT White Papers!

Accelerating Trading Partner Performance
One in five. That's how many partner transactions have at least one error. That is an amazing statistic, particularly given the extraordinary leaps in innovation across the global supply chain during the past two decades. Download this white paper to learn more.

Competing on Analytics
This Tech Analysis is designed to help identify characteristics shared by analytics competitors, and includes information about 32 organizations that have made a commitment to quantitative, fact-based analysis.

Cost Effective Scaling with Virtualization and Coyote Point Systems
An overview of the industry trend toward virtualization, how server consolidation has increased the importance of application uptime and the steps being taken to integrate load balancing technology with virtualized servers.

Five Checkpoints to Implementing IP Telephony
Implementation planning for IP PBX software and IP telephony has become vital as businesses replace discontinued legacy PBX phone systems. This informative whitepaper outlines five "checkpoints" for any implementation plan that will help make IP communications a successful proposition.

Hosted Email Security: Staying Ahead of New Threats
In the last two years, email has become a fierce battleground between the nefarious forces of spam and malware, and the heroes of messaging protection. The spam volumes increased alarmingly every month, bringing clever new forms of phishing and virus propagation attacks.

More Free IT White Papers!