How to Reset Struts2 File control

Asked Nov 05 '13 at 05:10

Active Nov 05 '13 at 09:33

Viewed 163 times

I have a Struts File control in my page. I would like to reset my file control if there is an invalid entry. Following are the things i noticed: 1) Most browsers don't let us to reset the file control. 2) What we can do is replace the existing control with a new control and copy all the original control's properties. I did this by doing :

var newInput = document.createElement("input");
    newInput.type = "file";
    newInput.id = document.getElementById("myfilecontrol").id;
    newInput.name = document.getElementById("myfilecontrol").name;
    newInput.className = document.getElementById("myfilecontrol").className;
    newInput.style.cssText = document.getElementById("myfilecontrol").style.cssText;
    document.getElementById("myfilecontrol").parentNode.replaceChild(newInput, document.getElementById("myfilecontrol"));

My problem is that this works only once. It is the old control that calls the validation method and not the new one. Is there any way i can make my new control call the validation method automatically ? or is there another better way to reset a struts file control ? (Refreshing the page is not an option.) Thanks in advance.

edited Nov 05 '13 at 09:33

asked Nov 05 '13 at 05:10

antony.ouseph.k

What do you mean by *reset* file control? – Aleksandr M Nov 05 '13 at 08:46
If a user has selected a wrong type of file. I want to show an error message and then clear the selection made. That is, I want to clear the File control and make it empty. – antony.ouseph.k Nov 05 '13 at 09:05
It should be clear by default, isn't it? – Aleksandr M Nov 05 '13 at 09:07
1

once the user selects a wrong file, we have to clear the field after displaying the error message. It wont be cleared automatically. – antony.ouseph.k Nov 05 '13 at 09:22
You mean javascript validation? Why don't you say so in your post? – Aleksandr M Nov 05 '13 at 09:26
1

What is `x` in your code? – Aleksandr M Nov 05 '13 at 09:27
x is the identification of the first control. I passed it using "this". – antony.ouseph.k Nov 05 '13 at 09:31
1

http://stackoverflow.com/a/17168519/1654265 – Andrea Ligios Nov 05 '13 at 09:32
1

@AndreaLigios: we cant set the value of a file control in struts as empty like the way mentioned in the link you provided. This is a security feature in most browsers. – antony.ouseph.k Nov 05 '13 at 09:37
2

Open the link in the answer. – Andrea Ligios Nov 05 '13 at 09:38

How to Reset Struts2 File control

0 Answers0