/* copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
* contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
*
* This file is part of CubicWeb.
*
* CubicWeb is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 2.1 of the License, or (at your option)
* any later version.
*
* CubicWeb is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* .. function:: Deferred
*
* dummy ultra minimalist implementation of deferred for jQuery
*/
function Deferred() {
this.__init__(this);
}
jQuery.extend(Deferred.prototype, {
__init__: function() {
this._onSuccess = [];
this._onFailure = [];
this._req = null;
this._result = null;
this._error = null;
},
addCallback: function(callback) {
if (this._req.readyState == 4) {
if (this._result) {
var args = [this._result, this._req];
jQuery.merge(args, cw.utils.sliceList(arguments, 1));
callback.apply(null, args);
}
}
else {
this._onSuccess.push([callback, cw.utils.sliceList(arguments, 1)]);
}
return this;
},
addErrback: function(callback) {
if (this._req.readyState == 4) {
if (this._error) {
callback.apply(null, [this._error, this._req]);
}
}
else {
this._onFailure.push([callback, cw.utils.sliceList(arguments, 1)]);
}
return this;
},
success: function(result) {
this._result = result;
try {
for (var i = 0; i < this._onSuccess.length; i++) {
var callback = this._onSuccess[i][0];
var args = [result, this._req];
jQuery.merge(args, this._onSuccess[i][1]);
callback.apply(null, args);
}
} catch(error) {
this.error(this.xhr, null, error);
}
},
error: function(xhr, status, error) {
this._error = error;
for (var i = 0; i < this._onFailure.length; i++) {
var callback = this._onFailure[i][0];
var args = [error, this._req];
jQuery.merge(args, this._onFailure[i][1]);
callback.apply(null, args);
}
}
});
var JSON_BASE_URL = baseuri() + 'json?';
//============= utility function handling remote calls responses. ==============//
function _loadAjaxHtmlHead($node, $head, tag, srcattr) {
var jqtagfilter = tag + '[' + srcattr + ']';
if (cw['loaded_'+srcattr] === undefined) {
cw['loaded_'+srcattr] = [];
var loaded = cw['loaded_'+srcattr];
jQuery('head ' + jqtagfilter).each(function(i) {
loaded.push(this.getAttribute(srcattr));
});
} else {
var loaded = cw['loaded_'+srcattr];
}
$node.find(tag).each(function(i) {
var url = this.getAttribute(srcattr);
if (url) {
if (jQuery.inArray(url, loaded) == -1) {
// take care to <script> tags: jQuery append method script nodes
// don't appears in the DOM (See comments on
// http://api.jquery.com/append/), which cause undesired
// duplicated load in our case. After trying to use bare DOM api
// to avoid this, we switched to handle a list of already loaded
// stuff ourselves, since bare DOM api gives bug with the
// server-response event, since we loose control on when the
// script is loaded (jQuery load it immediatly).
loaded.push(url);
jQuery(this).appendTo($head);
}
} else {
jQuery(this).appendTo($head);
}
});
$node.find(jqtagfilter).remove();
}
/**
* .. function:: function loadAjaxHtmlHead(response)
*
* inspect dom response (as returned by getDomFromResponse), search for
* a <div class="ajaxHtmlHead"> node and put its content into the real
* document's head.
* This enables dynamic css and js loading and is used by replacePageChunk
*/
function loadAjaxHtmlHead(response) {
var $head = jQuery('head');
var $responseHead = jQuery(response).find('div.ajaxHtmlHead');
// no ajaxHtmlHead found, no processing required
if (!$responseHead.length) {
return response;
}
_loadAjaxHtmlHead($responseHead, $head, 'script', 'src');
_loadAjaxHtmlHead($responseHead, $head, 'link', 'href');
// add any remaining children (e.g. meta)
$responseHead.children().appendTo($head);
// remove original container, which is now empty
$responseHead.remove();
// if there was only one actual node in the reponse besides
// the ajaxHtmlHead, then remove the wrapper created by
// getDomFromResponse() and return this single element
// For instance :
// 1/ CW returned the following content :
// <div>the-actual-content</div><div class="ajaxHtmlHead">...</div>
// 2/ getDomFromReponse() wrapped this into a single DIV to hold everything
// in one, unique, dom element
// 3/ now that we've removed the ajaxHtmlHead div, the only
// node left in the wrapper if the 'real' node built by the view,
// we can safely return this node. Otherwise, the view itself
// returned several 'root' nodes and we need to keep the wrapper
// created by getDomFromResponse()
if (response.childNodes.length == 1 && response.getAttribute('cubicweb:type') == 'cwResponseWrapper') {
return response.firstChild;
}
return response;
}
function _postAjaxLoad(node) {
// find sortable tables if there are some
if (typeof(Sortable) != 'undefined') {
Sortable.sortTables(node);
}
// find textareas and wrap them if there are some
if (typeof(FCKeditor) != 'undefined') {
buildWysiwygEditors();
}
if (typeof initFacetBoxEvents != 'undefined') {
initFacetBoxEvents(node);
}
if (typeof buildWidgets != 'undefined') {
buildWidgets(node);
}
if (typeof roundedCorners != 'undefined') {
roundedCorners(node);
}
if (typeof setFormsTarget != 'undefined') {
setFormsTarget(node);
}
_loadDynamicFragments(node);
// XXX [3.7] jQuery.one is now used instead jQuery.bind,
// jquery.treeview.js can be unpatched accordingly.
jQuery(CubicWeb).trigger('server-response', [true, node]);
jQuery(node).trigger('server-response', [true, node]);
}
function remoteCallFailed(err, req) {
cw.log(err);
if (req.status == 500) {
updateMessage(err);
} else {
updateMessage(_("an error occurred while processing your request"));
}
}
//============= base AJAX functions to make remote calls =====================//
/**
* .. function:: ajaxFuncArgs(fname, form, *args)
*
* extend `form` parameters to call the js_`fname` function of the json
* controller with `args` arguments.
*/
function ajaxFuncArgs(fname, form /* ... */) {
form = form || {};
$.extend(form, {
'fname': fname,
'pageid': pageid,
'arg': $.map(cw.utils.sliceList(arguments, 2), jQuery.toJSON)
});
return form;
}
/**
* .. function:: loadxhtml(url, form, reqtype='get', mode='replace', cursor=true)
*
* build url given by absolute or relative `url` and `form` parameters
* (dictionary), fetch it using `reqtype` method, then evaluate the
* returned XHTML and insert it according to `mode` in the
* document. Possible modes are :
*
* - 'replace' to replace the node's content with the generated HTML
* - 'swap' to replace the node itself with the generated HTML
* - 'append' to append the generated HTML to the node's content
*
* If `cursor`, turn mouse cursor into 'progress' cursor until the remote call
* is back.
*/
jQuery.fn.loadxhtml = function(url, form, reqtype, mode, cursor) {
if (this.size() > 1) {
cw.log('loadxhtml was called with more than one element');
}
var callback = null;
if (form && form.callback) {
cw.log('[3.9] callback given through form.callback is deprecated, add ' + 'callback on the defered');
callback = form.callback;
delete form.callback;
}
var node = this.get(0); // only consider the first element
if (cursor) {
setProgressCursor();
}
var d = loadRemote(url, form, reqtype);
d.addCallback(function(response) {
var domnode = getDomFromResponse(response);
domnode = loadAjaxHtmlHead(domnode);
mode = mode || 'replace';
// make sure the component is visible
$(node).removeClass("hidden");
if (mode == 'swap') {
var origId = node.id;
node = cw.swapDOM(node, domnode);
if (!node.id) {
node.id = origId;
}
} else if (mode == 'replace') {
jQuery(node).empty().append(domnode);
} else if (mode == 'append') {
jQuery(node).append(domnode);
}
_postAjaxLoad(node);
while (jQuery.isFunction(callback)) {
callback = callback.apply(this, [domnode]);
}
});
d.addErrback(remoteCallFailed);
if (cursor) {
d.addCallback(resetCursor);
d.addErrback(resetCursor);
}
return d;
}
/**
* .. function:: loadRemote(url, form, reqtype='GET', sync=false)
*
* Asynchronously (unless `async` argument is set to false) load an url or path
* and return a deferred whose callbacks args are decoded according to the
* Content-Type response header. `form` should be additional form params
* dictionary, `reqtype` the HTTP request type (get 'GET' or 'POST').
*/
function loadRemote(url, form, reqtype, sync) {
if (!url.startswith(baseuri())) {
url = baseuri() + url;
}
if (!sync) {
var deferred = new Deferred();
jQuery.ajax({
url: url,
type: (reqtype || 'GET').toUpperCase(),
data: form,
async: true,
beforeSend: function(xhr) {
deferred._req = xhr;
},
success: function(data, status) {
if (deferred._req.getResponseHeader("content-type") == 'application/json') {
data = cw.evalJSON(data);
}
deferred.success(data);
},
error: function(xhr, status, error) {
try {
if (xhr.status == 500) {
var reason_dict = cw.evalJSON(xhr.responseText);
deferred.error(xhr, status, reason_dict['reason']);
return;
}
} catch(exc) {
cw.log('error with server side error report:' + exc);
}
deferred.error(xhr, status, null);
}
});
return deferred;
} else {
var result = jQuery.ajax({
url: url,
type: (reqtype || 'GET').toUpperCase(),
data: form,
async: false
});
// check result.responseText instead of result to avoid error encountered with IE
if (result.responseText) {
// XXX no good reason to force json here,
// it should depends on request content-type
result = cw.evalJSON(result.responseText);
}
return result;
}
}
//============= higher level AJAX functions using remote calls ===============//
/**
* .. function:: _(message)
*
* emulation of gettext's _ shortcut
*/
function _(message) {
return loadRemote('json', ajaxFuncArgs('i18n', null, [message]), 'GET', true)[0];
}
/**
* .. function:: _loadDynamicFragments(node)
*
* finds each dynamic fragment in the page and executes the
* the associated RQL to build them (Async call)
*/
function _loadDynamicFragments(node) {
if (node) {
var fragments = jQuery(node).find('div.dynamicFragment');
} else {
var fragments = jQuery('div.dynamicFragment');
}
if (fragments.length == 0) {
return;
}
if (typeof LOADING_MSG == 'undefined') {
LOADING_MSG = 'loading'; // this is only a safety belt, it should not happen
}
for (var i = 0; i < fragments.length; i++) {
var fragment = fragments[i];
fragment.innerHTML = '<h3>' + LOADING_MSG + ' ... <img src="data/loading.gif" /></h3>';
var $fragment = jQuery(fragment);
// if cubicweb:loadurl is set, just pick the url et send it to loadxhtml
var url = $fragment.attr('cubicweb:loadurl');
if (url) {
$fragment.loadxhtml(url);
continue;
}
// else: rebuild full url by fetching cubicweb:rql, cubicweb:vid, etc.
var rql = $fragment.attr('cubicweb:rql');
var items = $fragment.attr('cubicweb:vid').split('&');
var vid = items[0];
var extraparams = {};
// case where vid='myvid¶m1=val1¶m2=val2': this is a deprecated abuse-case
if (items.length > 1) {
cw.log("[3.5] you're using extraargs in cubicweb:vid " +
"attribute, this is deprecated, consider using " +
"loadurl instead");
for (var j = 1; j < items.length; j++) {
var keyvalue = items[j].split('=');
extraparams[keyvalue[0]] = keyvalue[1];
}
}
var actrql = $fragment.attr('cubicweb:actualrql');
if (actrql) {
extraparams['actualrql'] = actrql;
}
var fbvid = $fragment.attr('cubicweb:fallbackvid');
if (fbvid) {
extraparams['fallbackvid'] = fbvid;
}
extraparams['rql'] = rql;
extraparams['vid'] = vid;
$fragment.loadxhtml('json', ajaxFuncArgs('view', extraparams));
}
}
jQuery(document).ready(function() {
_loadDynamicFragments();
});
function unloadPageData() {
// NOTE: do not make async calls on unload if you want to avoid
// strange bugs
loadRemote('json', ajaxFuncArgs('unload_page_data'), 'GET', true);
}
function removeBookmark(beid) {
var d = loadRemote('json', ajaxFuncArgs('delete_bookmark', null, beid));
d.addCallback(function(boxcontent) {
$('#bookmarks_box').loadxhtml('json',
ajaxFuncArgs('render', null, 'boxes',
'bookmarks_box'));
document.location.hash = '#header';
updateMessage(_("bookmark has been removed"));
});
}
function userCallback(cbname) {
setProgressCursor();
var d = loadRemote('json', ajaxFuncArgs('user_callback', null, cbname));
d.addCallback(resetCursor);
d.addErrback(resetCursor);
d.addErrback(remoteCallFailed);
return d;
}
function userCallbackThenUpdateUI(cbname, compid, rql, msg, registry, nodeid) {
var d = userCallback(cbname);
d.addCallback(function() {
$('#' + nodeid).loadxhtml('json', ajaxFuncArgs('render', {'rql': rql},
registry, compid));
if (msg) {
updateMessage(msg);
}
});
}
function userCallbackThenReloadPage(cbname, msg) {
var d = userCallback(cbname);
d.addCallback(function() {
window.location.reload();
if (msg) {
updateMessage(msg);
}
});
}
/**
* .. function:: unregisterUserCallback(cbname)
*
* unregisters the python function registered on the server's side
* while the page was generated.
*/
function unregisterUserCallback(cbname) {
setProgressCursor();
var d = loadRemote('json', ajaxFuncArgs('unregister_user_callback',
null, cbname));
d.addCallback(resetCursor);
d.addErrback(resetCursor);
d.addErrback(remoteCallFailed);
}
//============= XXX move those functions? ====================================//
function openHash() {
if (document.location.hash) {
var nid = document.location.hash.replace('#', '');
var node = jQuery('#' + nid);
if (node) {
$(node).removeClass("hidden");
}
};
}
jQuery(document).ready(openHash);
/**
* .. function:: buildWysiwygEditors(parent)
*
*XXX: this function should go in edition.js but as for now, htmlReplace
* references it.
*
* replace all textareas with fckeditors.
*/
function buildWysiwygEditors(parent) {
jQuery('textarea').each(function() {
if (this.getAttribute('cubicweb:type') == 'wysiwyg') {
// mark editor as instanciated, we may be called a number of times
// (see _postAjaxLoad)
this.setAttribute('cubicweb:type', 'fckeditor');
if (typeof FCKeditor != "undefined") {
var fck = new FCKeditor(this.id);
fck.Config['CustomConfigurationsPath'] = fckconfigpath;
fck.Config['DefaultLanguage'] = fcklang;
fck.BasePath = "fckeditor/";
fck.ReplaceTextarea();
} else {
cw.log('fckeditor could not be found.');
}
}
});
}
jQuery(document).ready(buildWysiwygEditors);
/**
* .. function:: stripEmptyTextNodes(nodelist)
*
* takes a list of DOM nodes and removes all empty text nodes
*/
function stripEmptyTextNodes(nodelist) {
/* this DROPS empty text nodes */
var stripped = [];
for (var i = 0; i < nodelist.length; i++) {
var node = nodelist[i];
if (isTextNode(node)) {
/* all browsers but FF -> innerText, FF -> textContent */
var text = node.innerText || node.textContent;
if (text && ! text.strip()) {
continue;
}
} else {
stripped.push(node);
}
}
return stripped;
}
/**
* .. function:: getDomFromResponse(response)
*
* convenience function that returns a DOM node based on req's result.
* XXX clarify the need to clone
* */
function getDomFromResponse(response) {
if (typeof(response) == 'string') {
var doc = html2dom(response);
} else {
var doc = response.documentElement;
}
var children = doc.childNodes;
if (!children.length) {
// no child (error cases) => return the whole document
return jQuery(doc).clone().context;
}
children = stripEmptyTextNodes(children);
if (children.length == 1) {
// only one child => return it
return jQuery(children[0]).clone().context;
}
// several children => wrap them in a single node and return the wrap
return DIV({'cubicweb:type': "cwResponseWrapper"},
$.map(children, function(node) {
return jQuery(node).clone().context;})
);
}
/* DEPRECATED *****************************************************************/
preprocessAjaxLoad = cw.utils.deprecatedFunction(
'[3.9] preprocessAjaxLoad() is deprecated, use loadAjaxHtmlHead instead',
function(node, newdomnode) {
return loadAjaxHtmlHead(newdomnode);
}
);
reloadComponent = cw.utils.deprecatedFunction(
'[3.9] reloadComponent() is deprecated, use loadxhtml instead',
function(compid, rql, registry, nodeid, extraargs) {
registry = registry || 'components';
rql = rql || '';
nodeid = nodeid || (compid + 'Component');
extraargs = extraargs || {};
var node = cw.jqNode(nodeid);
return node.loadxhtml('json', ajaxFuncArgs('component', null, compid,
rql, registry, extraargs));
}
);
reloadBox = cw.utils.deprecatedFunction(
'[3.9] reloadBox() is deprecated, use loadxhtml instead',
function(boxid, rql) {
return reloadComponent(boxid, rql, 'boxes', boxid);
}
);
replacePageChunk = cw.utils.deprecatedFunction(
'[3.9] replacePageChunk() is deprecated, use loadxhtml instead',
function(nodeId, rql, vid, extraparams, /* ... */ swap, callback) {
var params = null;
if (callback) {
params = {
callback: callback
};
}
var node = jQuery('#' + nodeId)[0];
var props = {};
if (node) {
props['rql'] = rql;
props['fname'] = 'view';
props['pageid'] = pageid;
if (vid) {
props['vid'] = vid;
}
if (extraparams) {
jQuery.extend(props, extraparams);
}
// FIXME we need to do asURL(props) manually instead of
// passing `props` directly to loadxml because replacePageChunk
// is sometimes called (abusively) with some extra parameters in `vid`
var mode = swap ? 'swap': 'replace';
var url = JSON_BASE_URL + asURL(props);
jQuery(node).loadxhtml(url, params, 'get', mode);
} else {
cw.log('Node', nodeId, 'not found');
}
}
);
loadxhtml = cw.utils.deprecatedFunction(
'[3.9] loadxhtml() function is deprecated, use loadxhtml method instead',
function(nodeid, url, /* ... */ replacemode) {
jQuery('#' + nodeid).loadxhtml(url, null, 'post', replacemode);
}
);
remoteExec = cw.utils.deprecatedFunction(
'[3.9] remoteExec() is deprecated, use loadRemote instead',
function(fname /* ... */) {
setProgressCursor();
var props = {
'fname': fname,
'pageid': pageid,
'arg': $.map(cw.utils.sliceList(arguments, 1), jQuery.toJSON)
};
var result = jQuery.ajax({
url: JSON_BASE_URL,
data: props,
async: false
}).responseText;
if (result) {
result = cw.evalJSON(result);
}
resetCursor();
return result;
}
);
asyncRemoteExec = cw.utils.deprecatedFunction(
'[3.9] asyncRemoteExec() is deprecated, use loadRemote instead',
function(fname /* ... */) {
setProgressCursor();
var props = {
'fname': fname,
'pageid': pageid,
'arg': $.map(cw.utils.sliceList(arguments, 1), jQuery.toJSON)
};
// XXX we should inline the content of loadRemote here
var deferred = loadRemote(JSON_BASE_URL, props, 'POST');
deferred = deferred.addErrback(remoteCallFailed);
deferred = deferred.addErrback(resetCursor);
deferred = deferred.addCallback(resetCursor);
return deferred;
}
);