Re: Know if FileUploadField has value set before its parent form is submitted and file gets uploaded
Check https://github.com/wicketstuff/core/tree/master/jdk-1.6-parent/wicket-html5-parent/wicket-html5/src/main/java/org/wicketstuff/html5/fileapi and its examples. But this uses HTML5 APIs and wont work on your favorite Internet Explorer. On Sun, Sep 4, 2011 at 7:35 PM, Christian Huber hub...@butterbrot.org wrote: Not sure if I completely understand what you want to do but as far as I do I guess the only way to do that is using java script. You could add a java script validation routine to the submit buttons onclick handler that aborts submission when the input field has no value. Another approach could be to add a onchange handler for the input field. If the field has a value set after a change the submit button gets enabled otherwise it can be disabled. hth, Chris The Sanity Resort http://sanityresort.blogspot.com/ Am 04.09.2011 15:47, schrieb martin.ase...@mail.bg: Hello, guys, I've got a FileUploadField as so: image1UploadField = new FileUploadField(image1_upload, new Model()); I aim to know if the field has value set even before the form gets processed and the item gets uploaded. I want to minimize traffic and memory usage of my application. Therefore I don't want the file get uploaded before I know if there really was file specified. What's the most proper way to do this in Wicket code? Thank you in advance, Martin - Mail.bg: Безплатен e-mail адрес. Най-добрите характеристики на българския пазар - 10 GB пощенска кутия, 20 MB прикрепен файл, безплатен POP3, мобилна версия, SMS известяване и други. -- Martin Grigorov jWeekend Training, Consulting, Development http://jWeekend.com - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Know if FileUploadField has value set before its parent form is submitted and file gets uploaded
Hello, guys, I've got a FileUploadField as so: image1UploadField = new FileUploadField(image1_upload, new Model()); I aim to know if the field has value set even before the form gets processed and the item gets uploaded. I want to minimize traffic and memory usage of my application. Therefore I don't want the file get uploaded before I know if there really was file specified. What's the most proper way to do this in Wicket code? Thank you in advance, Martin - Mail.bg: Безплатен e-mail адрес. Най-добрите характеристики на българския пазар - 10 GB пощенска кутия, 20 MB прикрепен файл, безплатен POP3, мобилна версия, SMS известяване и други.
Re: Know if FileUploadField has value set before its parent form is submitted and file gets uploaded
Not sure if I completely understand what you want to do but as far as I do I guess the only way to do that is using java script. You could add a java script validation routine to the submit buttons onclick handler that aborts submission when the input field has no value. Another approach could be to add a onchange handler for the input field. If the field has a value set after a change the submit button gets enabled otherwise it can be disabled. hth, Chris The Sanity Resort http://sanityresort.blogspot.com/ Am 04.09.2011 15:47, schrieb martin.ase...@mail.bg: Hello, guys, I've got a FileUploadField as so: image1UploadField = new FileUploadField(image1_upload, new Model()); I aim to know if the field has value set even before the form gets processed and the item gets uploaded. I want to minimize traffic and memory usage of my application. Therefore I don't want the file get uploaded before I know if there really was file specified. What's the most proper way to do this in Wicket code? Thank you in advance, Martin - Mail.bg: Безплатен e-mail адрес. Най-добрите характеристики на българския пазар - 10 GB пощенска кутия, 20 MB прикрепен файл, безплатен POP3, мобилна версия, SMS известяване и други.
