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406 lines
10 KiB
JavaScript
406 lines
10 KiB
JavaScript
/**
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* Javascript file for AJAX select widget
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*
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* @author Nathan Gray <nathangray@sourceforge.net>
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*
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* @param widget_id the id of the ajax_select_widget
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* @param onchange function to call if the value of the select widget is changed
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* @param options the query object containing callback and settings
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package etemplate
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* @subpackage extensions
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* @link http://www.egroupware.org
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*
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* @version $Id$
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*/
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//xajaxDebug = 1;
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var current_app = 'etemplate';
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/**
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* Settings for the timeout to prevent flooding the server with requests
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*
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* Adjust ajax_select_timeout to change how long to wait before sending the request (in ms)
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*/
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var ajax_select_timer_id = 0;
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var ajax_select_timeout = 300;
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// These keys will not trigger a search if the results box is currently displayed
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var no_search_keys = [
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'9', // Tab
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'38', '63232', // Up
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'40', '63233' // Down
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];
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function ajax_select_widget_setup(widget_id, onchange, options, currentapp) {
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current_app = currentapp;
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if(onchange) {
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if(onchange == 1) {
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onchange = function() {submitit(this.form, this.value);};
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} else {
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eval("onchange = function(e) { " + onchange + ";}");
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}
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var value = document.getElementById(widget_id + '[value]');
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if(value) {
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if(value.addEventListener) {
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value.addEventListener('change', onchange, true);
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} else {
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var old = (value.onchange) ? value.onchange : function() {};
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value.onchange = function(e) {
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old(e);
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onchange(e);
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};
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}
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}
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}
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var widget = document.getElementById(widget_id + '[search]');
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if(widget) {
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widget.setAttribute('autocomplete', 'off');
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if(widget.addEventListener) {
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widget.addEventListener('keydown', checkKey, true);
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widget.addEventListener('keyup', timer_change, false);
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widget.addEventListener('blur', hideBox, false);
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} else {
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widget.onkeyup = timer_change;
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widget.onblur = hideBox;
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widget.onkeydown = checkKey;
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}
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// Set results
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var results = document.createElement('div');
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results.id = widget_id + '[results]';
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results.className = 'resultBox';
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results.style.position = 'absolute';
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// check if IE, if it is, fix the position
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if (document.all) {
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results.style.marginLeft = 0 - widget.offsetWidth - 2 * widget.offsetLeft - 1;
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results.style.marginTop = widget.offsetHeight + 1;
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}
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results.style.zIndex = 50;
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results.options = options;
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results.innerHTML = "";
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widget.parentNode.appendChild(results);
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}
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var value = document.getElementById(widget_id + '[value]');
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if(value) {
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value.style.display = 'none';
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}
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}
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function checkKey(e, value) {
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if(!e) {
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var e = window.event;
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}
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/*
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* We check for Tab, Up and Down
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*/
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var interested = false;
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for(var i = 0; i < no_search_keys.length; i++) {
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if(e.keyCode == no_search_keys[i]) {
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interested = true;
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break;
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}
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}
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if (!interested) {
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return; // The user has not pressed anything we're interested in
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}
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if(e.target) {
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var target = e.target;
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} else if (e.srcElement) {
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var target = e.srcElement;
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}
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if(target) {
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if (target.nodeType == 3) { // defeat Safari bug
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target = target.parentNode;
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}
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}
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var id = target.id;
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var base_id = id.substr(0, id.lastIndexOf('['));
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var results = document.getElementById(base_id + '[results]');
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// Consume event so search doesn't go
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if(results.childNodes.length > 0) {
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e.cancelBubble = true;
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if(e.stopPropegation) e.stopPropegation();
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clearTimeout(ajax_select_timer_id);
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} else {
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return false;
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}
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// Up and down arrows
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switch (e.keyCode) {
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// Up
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case 38:
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case 63232:
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if(results.current) {
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results.current.className = results.current.className.replace(' resultBoxSelected','');
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}
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if(results.current && results.current.previousSibling && results.current.previousSibling.childNodes.length > 2) {
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results.current = results.current.previousSibling;
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} else {
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var elements = results.childNodes;
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results.current = elements[elements.length - 1];
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}
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results.current.className += ' resultBoxSelected';
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break;
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// Down
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case 40:
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case 63233:
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if(results.current) {
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results.current.className = results.current.className.replace(' resultBoxSelected','');
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}
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if(results.current && results.current.nextSibling && results.current.nextSibling.childNodes.length > 2) {
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results.current = results.current.nextSibling;
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} else {
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var elements = results.childNodes;
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for (var i = 0; i < elements.length; i++) {
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elem = elements.item(i);
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if (elem.value) {
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results.current = elem;
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break; // We have found the first selection
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}
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}
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}
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results.current.className += ' resultBoxSelected';
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break;
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// Tab: Select current element
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case 9:
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var elem;
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if(results.current && results.current.value) {
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elem = results.current;
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} else {
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var elements = document.getElementById(base_id + '[results]').childNodes;
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for (var i = 0; i < elements.length; i++) {
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elem = elements.item(i);
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if (elem.value) {
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break; // We have found the first selection
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}
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}
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}
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if (!elem) return;
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var event;
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if(document.createEvent && document.dispatchEvent) {
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// Most
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event = document.createEvent('MouseEvents');
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event.initEvent('click', true, true);
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elem.dispatchEvent(event);
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} else {
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// IE
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event = document.createEventObject();
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elem.fireEvent('onclick', event);
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}
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break;
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}
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}
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/**
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* Set a timeout to prevent user from flooding the server with requests as
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* they type. Waits to see if the user is still typing before sending the
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* request. Adjust ajax_select_timeout to change how long to wait (in ms).
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*/
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function timer_change(e, value) {
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if ( ajax_select_timer_id != 0) {
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clearTimeout(ajax_select_timer_id);
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}
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ajax_select_timer_id = setTimeout(
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function() {
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change(e, value);
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},
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ajax_select_timeout
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);
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}
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function change(e, value) {
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if(!e) {
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var e = window.event;
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}
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if(e.target) {
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var target = e.target;
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} else if (e.srcElement) {
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var target = e.srcElement;
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}
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if(target) {
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if (target.nodeType == 3) { // defeat Safari bug
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target = target.parentNode;
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}
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var id = target.id;
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var value = target.value;
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} else if (e) {
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var id = e;
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if(value) {
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var value = value;
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} else {
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var value = e.value;
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}
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var set_id = id.substr(0, id.lastIndexOf('['));
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}
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var base_id = id.substr(0, id.lastIndexOf('['));
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if(document.getElementById(base_id + '[results]')) {
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set_id = base_id + '[results]';
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/*
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* We check for Tab, Up and Down
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*/
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var interested = false;
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for(var i = 0; i < no_search_keys.length; i++) {
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if(e.keyCode == no_search_keys[i]) {
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interested = true;
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break;
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}
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}
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if (interested && document.getElementById(set_id).style.display == 'block') {
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clearTimeout(ajax_select_timer_id);
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return; // Results are shown, allow keys to move the selection cursor
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}
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} else {
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set_id = base_id + '[search]';
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}
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var query = document.getElementById(set_id).options;
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if(document.getElementById(base_id + '[filter]')) {
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query.filter = document.getElementById(base_id + '[filter]').value;
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}
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// Hide selectboxes for IE
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if(document.all) {
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var selects = document.getElementsByTagName('select');
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for(var i = 0; i < selects.length; i++) {
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selects[i].style.visibility = 'hidden';
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}
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}
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xajax_doXMLHTTP(current_app + ".ajax_select_widget.ajax_search.etemplate", id, value, set_id, query);
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}
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/* Remove options from a results box
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* @param id - The id of the select
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*/
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function remove_ajax_results(id) {
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if(document.getElementById(id)) {
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var element = document.getElementById(id);
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if (element.tagName == 'DIV') {
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element.innerHTML = '';
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}
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}
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}
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/* Add an option to a result box
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* @param id - The id of the result box
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* @param key - The key of the option
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* @param value - The value of the option
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* @param row - The html for the row to display
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*/
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function add_ajax_result(id, key, value, row) {
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var resultbox = document.getElementById(id);
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if(resultbox) {
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if (resultbox.tagName == 'DIV') {
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var base_id = resultbox.id.substr(0, resultbox.id.lastIndexOf('['));
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var search_id = base_id + '[search]';
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var value_id = base_id + '[value]';
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resultbox.style.display = 'block';
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var result = document.createElement('div');
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result.className = (resultbox.childNodes.length % 2) ? 'row_on' : 'row_off';
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if(key) {
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result.value = new Object();
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result.value.key = key;
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result.value.value = value;
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result.value.search_id = search_id;
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result.value.value_id = value_id;
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result.innerHTML = row;
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// when they click, add that item to the value hidden textbox
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if(result.addEventListener) {
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result.addEventListener('click', select_result, true);
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} else {
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result.onclick = select_result;
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}
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} else {
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result.innerHTML += row + "<br />";
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}
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resultbox.appendChild(result);
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}
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}
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}
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function select_result(e) {
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// when they click, add that item to the value textbox & call onchange()
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if(!e) {
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var e = window.event;
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}
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if(e.target) {
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var target = e.target;
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} else if (e.srcElement) {
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var target = e.srcElement;
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}
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while(!target.value && target != document) {
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target = target.parentNode;
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}
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var value = document.getElementById(target.value.value_id);
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var search = document.getElementById(target.value.search_id);
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if(value) {
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value.value = target.value.key;
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}
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if(search) {
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var string = target.value.value;
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string = string.replace(/&/g, '&');
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string = string.replace(/</g, '<');
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string = string.replace(/>/g, '>');
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search.value = string;
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var event;
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if(document.createEvent) {
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// Most
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event = document.createEvent('HTMLEvents');
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event.initEvent('change', true, true);
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return value.dispatchEvent(event);
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} else {
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// IE
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event = document.createEventObject();
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return value.fireEvent('onchange', event);
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}
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}
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}
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function hideBox(e) {
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if(!e) {
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var e = window.event;
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}
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if(e.target) {
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var target = e.target;
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} else if (e.srcElement) {
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var target = e.srcElement;
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}
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if(target) {
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if (target.nodeType == 3) { // defeat Safari bug
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target = target.parentNode;
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}
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}
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var set_id = target.id.substr(0, target.id.lastIndexOf('[')) + '[results]';
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setTimeout("document.getElementById('" + set_id + "').style.display = 'none'", 200);
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var selects = document.getElementsByTagName('select');
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// Un-hide select boxes for IE
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if(document.all) {
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for(var i = 0; i < selects.length; i++) {
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selects[i].style.visibility = 'visible';
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}
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}
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}
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