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/**
* Class managing the timer to display a warning on a expiring lock
*/
var dw_locktimer = {
timeout: 0,
draft: false,
timerID: null,
lasttime: null,
msg: LANG.willexpire,
pageid: '',
fieldsToSaveAsDraft: [
'input[name=prefix]',
'textarea[name=wikitext]',
'input[name=suffix]',
'input[name=date]',
],
callbacks: [],
/**
* Initialize the lock timer
*
* @param {int} timeout Length of timeout in seconds
* @param {bool} draft Whether to save drafts
* @param {string} edid Optional; ID of an edit object which has to be present
*/
init: function(timeout,draft,edid){
var $edit;
edid = edid || 'wiki__text';
$edit = jQuery('#' + edid);
if($edit.length === 0 || $edit.attr('readonly')) {
return;
}
// init values
dw_locktimer.timeout = timeout*1000;
dw_locktimer.draft = draft;
dw_locktimer.lasttime = new Date();
dw_locktimer.pageid = jQuery('#dw__editform').find('input[name=id]').val();
if(!dw_locktimer.pageid) {
return;
}
// register refresh event
$edit.keypress(dw_locktimer.refresh);
// start timer
dw_locktimer.reset();
},
/**
* Add another field of the editform to be posted to the server when a draft is saved
*/
addField: function(selector) {
dw_locktimer.fieldsToSaveAsDraft.push(selector);
},
/**
* Add a callback that is executed when the post request to renew the lock and save the draft returns successfully
*
* If the user types into the edit-area, then dw_locktimer will regularly send a post request to the DokuWiki server
* to extend the page's lock and update the draft. When this request returns successfully, then the draft__status
* is updated. This method can be used to add further callbacks to be executed at that moment.
*
* @param {function} callback the only param is the data returned by the server
*/
addRefreshCallback: function(callback) {
dw_locktimer.callbacks.push(callback);
},
/**
* (Re)start the warning timer
*/
reset: function(){
dw_locktimer.clear();
dw_locktimer.timerID = window.setTimeout(dw_locktimer.warning, dw_locktimer.timeout);
},
/**
* Display the warning about the expiring lock
*/
warning: function(){
dw_locktimer.clear();
alert(fixtxt(dw_locktimer.msg));
},
/**
* Remove the current warning timer
*/
clear: function(){
if(dw_locktimer.timerID !== null){
window.clearTimeout(dw_locktimer.timerID);
dw_locktimer.timerID = null;
}
},
/**
* Refresh the lock via AJAX
*
* Called on keypresses in the edit area
*/
refresh: function(){
var now = new Date(),
params = 'call=lock&id=' + dw_locktimer.pageid + '&';
// refresh every half minute only
if(now.getTime() - dw_locktimer.lasttime.getTime() <= 30*1000) {
return;
}
// POST everything necessary for draft saving
if(dw_locktimer.draft && jQuery('#dw__editform').find('textarea[name=wikitext]').length > 0){
params += jQuery('#dw__editform').find(dw_locktimer.fieldsToSaveAsDraft.join(', ')).serialize();
}
jQuery.post(
DOKU_BASE + 'lib/exe/ajax.php',
params,
null,
'json'
).done(function dwLocktimerRefreshDoneHandler(data) {
dw_locktimer.callbacks.forEach(
function (callback) {
callback(data);
}
);
});
dw_locktimer.lasttime = now;
},
/**
* Callback. Resets the warning timer
*/
refreshed: function(data){
if (data.errors.length) {
data.errors.forEach(function(error) {
jQuery('#draft__status').after(
jQuery('<div class="error"></div>').text(error)
);
})
}
jQuery('#draft__status').html(data.draft);
if(data.lock !== '1') {
return; // locking failed
}
dw_locktimer.reset();
}
};
dw_locktimer.callbacks.push(dw_locktimer.refreshed);
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