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var localdraft = {
$form: null,
timer: null,
init: function () {
if (!localdraft.supports_html5_storage()) {
return;
}
localdraft.$form = jQuery('#dw__editform');
if (localdraft.$form.length) {
// register draft saving
jQuery('#wiki__text').keyup(function () {
// save after 500ms iactivity
if (localdraft.timer) window.clearTimeout(localdraft.timer);
localdraft.timer = window.setTimeout(localdraft.saveDraft, 500);
});
} else {
localdraft.clearSavedDraft();
// if a draft still exists it needs to be sent to the server
localdraft.saveRemoteDraft();
}
},
/**
* Check if localstorage is available
*
* @returns {boolean}
*/
supports_html5_storage: function () {
try {
return 'localStorage' in window && window['localStorage'] !== null;
} catch (e) {
return false;
}
},
/**
* deletes a draft that has been successfully saved already
*
* It compares the last save date with the date of the revision the draft was editing.
* So this behaves similar to the remote drafts in that a draft will be deleted when
* someone else edited the page meanwhile
*/
clearSavedDraft: function () {
var draft_date = window.localStorage.getItem('draft_date-' + JSINFO.id);
if (draft_date && draft_date < JSINFO['lastmod']) {
localdraft.removeDraft();
}
},
/**
* remove local draft of the local page
*/
removeDraft: function () {
window.localStorage.removeItem('draft_text-' + JSINFO.id);
window.localStorage.removeItem('draft_date-' + JSINFO.id);
},
/**
* Save the current page in the local draft
*/
saveDraft: function () {
console.log('sving draft');
var page =
localdraft.$form.find('input[name=id]').val();
var state =
localdraft.$form.find('input[name=prefix]').val() +
localdraft.$form.find('textarea[name=wikitext]').val() +
localdraft.$form.find('input[name=suffix]').val();
var date =
localdraft.$form.find('input[name=date]').val();
window.localStorage.setItem('draft_text-' + page, state);
window.localStorage.setItem('draft_date-' + page, date);
},
/**
* Saves the locally stored draft (if any) to the server
*/
saveRemoteDraft: function () {
console.log('getDraft' + JSINFO.id);
var draft_text = window.localStorage.getItem('draft_text-' + JSINFO.id);
var draft_date = window.localStorage.getItem('draft_date-' + JSINFO.id);
if (draft_date && draft_text) {
var params = {
'call': 'lock',
'id': JSINFO.id,
'prefix': '',
'wikitext': draft_text,
'suffix': '',
'date': draft_date
};
jQuery.post(
DOKU_BASE + 'lib/exe/ajax.php',
params,
localdraft.onRemoteDraftSave(),
'html'
);
}
},
/**
* Callback when the data has been saved
* @param data
*/
onRemoteDraftSave: function (data) {
localdraft.removeDraft();
// page's draft status might have changed, reload
document.location.reload();
}
};
jQuery(localdraft.init);
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