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Patch from Raphael Alla to prevent flooding by waiting to see if the user is done typing before sending request.

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This commit is contained in:
Nathan Gray 2008-05-26 14:48:32 +00:00
parent 78dd1cdf03
commit 25a9f1165d
1 changed files with 27 additions and 2 deletions
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29
etemplate/js/ajax_select.js
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@ -18,6 +18,14 @@
//xajaxDebug = 1; //xajaxDebug = 1;
var current_app = 'etemplate'; var current_app = 'etemplate';
/**
* Settings for the timeout to prevent flooding the server with requests
*
* Adjust ajax_select_timeout to change how long to wait before sending the request (in ms)
*/
var ajax_select_timer_id = 0;
var ajax_select_timeout = 300;
function ajax_select_widget_setup(widget_id, onchange, options, currentapp) { function ajax_select_widget_setup(widget_id, onchange, options, currentapp) {
current_app = currentapp; current_app = currentapp;
if(onchange) { if(onchange) {
@ -47,10 +55,10 @@ function ajax_select_widget_setup(widget_id, onchange, options, currentapp) {
if(widget.addEventListener) { if(widget.addEventListener) {
widget.addEventListener('keydown', checkKey, true); widget.addEventListener('keydown', checkKey, true);
widget.addEventListener('keyup', change, false); widget.addEventListener('keyup', timer_change, false);
widget.addEventListener('blur', hideBox, false); widget.addEventListener('blur', hideBox, false);
} else { } else {
widget.onkeyup = change; widget.onkeyup = timer_change;
widget.onblur = hideBox; widget.onblur = hideBox;
widget.onkeydown = checkKey; widget.onkeydown = checkKey;
} }
@ -180,6 +188,23 @@ function checkKey(e, value) {
} }
} }
/**
* Set a timeout to prevent user from flooding the server with requests as
* they type. Waits to see if the user is still typing before sending the
* request. Adjust ajax_select_timeout to change how long to wait (in ms).
*/
function timer_change(e, value) {
if ( ajax_select_timer_id != 0) {
clearTimeout(ajax_select_timer_id);
}
ajax_select_timer_id = setTimeout(
function() {
change(e, value);
},
ajax_select_timeout
);
}
function change(e, value) { function change(e, value) {
if(!e) { if(!e) {
var e = window.event; var e = window.event;