web/data/cubicweb.ajax.js
author Aurelien Campeas <aurelien.campeas@logilab.fr>
Thu, 03 Sep 2009 14:08:17 +0200
branch3.5
changeset 3103 1d09765ee720
parent 3084 096d680c9da2
parent 3102 f2c4da6b008d
child 3120 57ceabc6dfbc
permissions -rw-r--r--
backport stable
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/*
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 *  :organization: Logilab
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 *  :copyright: 2003-2009 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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 *  :contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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 */
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CubicWeb.require('python.js');
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CubicWeb.require('htmlhelpers.js');
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var JSON_BASE_URL = baseuri() + 'json?';
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function _loadAjaxHtmlHead(node, head, tag, srcattr) {
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    var loaded = [];
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    var jqtagfilter = tag + '[' + srcattr + ']';
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    jQuery('head ' + jqtagfilter).each(function(i) {
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	loaded.push(this.getAttribute(srcattr));
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    });
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    node.find(tag).each(function(i) {
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	if (this.getAttribute(srcattr)) {
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	    if (!loaded.contains(this.getAttribute(srcattr))) {
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		jQuery(this).appendTo(head);
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	    }
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	} else {
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	    jQuery(this).appendTo(head);
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	}
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    });
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    node.find(jqtagfilter).remove();
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}
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/*
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 * inspect dom response, search for a <div class="ajaxHtmlHead"> node and
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 * put its content into the real document's head.
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 * This enables dynamic css and js loading and is used by replacePageChunk
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 */
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function loadAjaxHtmlHead(node) {
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    var head = jQuery('head');
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    node = jQuery(node).find('div.ajaxHtmlHead');
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    _loadAjaxHtmlHead(node, head, 'script', 'src');
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    _loadAjaxHtmlHead(node, head, 'link', 'href');
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    node.find('*').appendTo(head);
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}
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function preprocessAjaxLoad(node, newdomnode) {
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    loadAjaxHtmlHead(newdomnode);
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}
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function postAjaxLoad(node) {
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    // find sortable tables if there are some
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    if (typeof(Sortable) != 'undefined') {
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	Sortable.sortTables(node);
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    }
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    // find textareas and wrap them if there are some
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    if (typeof(FCKeditor) != 'undefined') {
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	buildWysiwygEditors();
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    }
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    if (typeof initFacetBoxEvents != 'undefined') {
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	initFacetBoxEvents(node);
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    }
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    if (typeof buildWidgets != 'undefined') {
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	buildWidgets(node);
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    }
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    if (typeof roundedCorners != 'undefined') {
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	roundedCorners(node);
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    }
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    loadDynamicFragments(node);
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    // XXX simulates document.ready, but the former
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    // only runs once, this one potentially many times
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    // we probably need to unbind the fired events
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    // When this is done, jquery.treeview.js (for instance)
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    // can be unpatched.
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  jQuery(CubicWeb).trigger('ajax-loaded');
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}
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/* cubicweb loadxhtml plugin to make jquery handle xhtml response
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 *
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 * fetches `url` and replaces this's content with the result
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 *
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 * @param mode how the replacement should be done (default is 'replace')
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 *  Possible values are :
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 *    - 'replace' to replace the node's content with the generated HTML
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 *    - 'swap' to replace the node itself with the generated HTML
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 *    - 'append' to append the generated HTML to the node's content
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 */
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jQuery.fn.loadxhtml = function(url, data, reqtype, mode) {
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    var ajax = null;
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    if (reqtype == 'post') {
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	ajax = jQuery.post;
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    } else {
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	ajax = jQuery.get;
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    }
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    if (this.size() > 1) {
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	log('loadxhtml was called with more than one element');
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    }
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    var node = this.get(0); // only consider the first element
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    mode = mode || 'replace';
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    var callback = null;
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    if (data && data.callback) {
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	callback = data.callback;
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	delete data.callback;
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    }
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    ajax(url, data, function(response) {
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	var domnode = getDomFromResponse(response);
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	preprocessAjaxLoad(node, domnode);
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	if (mode == 'swap') {
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	    var origId = node.id;
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	    node = swapDOM(node, domnode);
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	    if (!node.id) {
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		node.id = origId;
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	    }
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	} else if (mode == 'replace') {
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	    jQuery(node).empty().append(domnode);
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	} else if (mode == 'append') {
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	    jQuery(node).append(domnode);
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	}
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	postAjaxLoad(node);
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	while (jQuery.isFunction(callback)) {
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	    callback = callback.apply(this, [domnode]);
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	}
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    });
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};
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/* finds each dynamic fragment in the page and executes the
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 * the associated RQL to build them (Async call)
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 */
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function loadDynamicFragments(node) {
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    if (node) {
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	var fragments = jQuery(node).find('div.dynamicFragment');
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    } else {
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	var fragments = jQuery('div.dynamicFragment');
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    }
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    if (fragments.length == 0) {
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	return;
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    }
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    if (typeof LOADING_MSG == 'undefined') {
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	LOADING_MSG = 'loading'; // this is only a safety belt, it should not happen
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    }
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    for(var i=0; i<fragments.length; i++) {
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	var fragment = fragments[i];
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	fragment.innerHTML = '<h3>' + LOADING_MSG + ' ... <img src="data/loading.gif" /></h3>';
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	var rql = getNodeAttribute(fragment, 'cubicweb:rql');
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	var vid = getNodeAttribute(fragment, 'cubicweb:vid');
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        var extraparams = {};
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	var actrql = getNodeAttribute(fragment, 'cubicweb:actualrql');
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	if (actrql) { extraparams['actualrql'] = actrql; }
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	var fbvid = getNodeAttribute(fragment, 'cubicweb:fallbackvid');
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	if (fbvid) { extraparams['fallbackvid'] = fbvid; }
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	replacePageChunk(fragment.id, rql, vid, extraparams);
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    }
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}
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jQuery(document).ready(function() {loadDynamicFragments();});
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//============= base AJAX functions to make remote calls =====================//
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function remoteCallFailed(err, req) {
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    if (req.status == 500) {
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	updateMessage(err);
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    } else {
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	updateMessage(_("an error occured while processing your request"));
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    }
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}
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/*
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 * This function will call **synchronously** a remote method on the cubicweb server
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 * @param fname: the function name to call (as exposed by the JSONController)
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 *
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 * additional arguments will be directly passed to the specified function
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 *
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 * It looks at http headers to guess the response type.
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 */
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function remoteExec(fname /* ... */) {
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    setProgressCursor();
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    var props = {'fname' : fname, 'pageid' : pageid,
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     		 'arg': map(jQuery.toJSON, sliceList(arguments, 1))};
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    var result  = jQuery.ajax({url: JSON_BASE_URL, data: props, async: false}).responseText;
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    if (result) {
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	result = evalJSON(result);
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    }
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    resetCursor();
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    return result;
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}
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/*
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 * This function will call **asynchronously** a remote method on the json
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 * controller of the cubicweb http server
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 *
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 * @param fname: the function name to call (as exposed by the JSONController)
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 *
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 * additional arguments will be directly passed to the specified function
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 *
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 * It looks at http headers to guess the response type.
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 */
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function asyncRemoteExec(fname /* ... */) {
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    setProgressCursor();
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    var props = {'fname' : fname, 'pageid' : pageid,
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     		 'arg': map(jQuery.toJSON, sliceList(arguments, 1))};
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    var deferred = loadRemote(JSON_BASE_URL, props, 'POST');
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    deferred = deferred.addErrback(remoteCallFailed);
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    deferred = deferred.addErrback(resetCursor);
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    deferred = deferred.addCallback(resetCursor);
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    return deferred;
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}
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/* emulation of gettext's _ shortcut
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 */
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function _(message) {
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    return remoteExec('i18n', [message])[0];
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}
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function userCallback(cbname) {
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    asyncRemoteExec('user_callback', cbname);
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}
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function unloadPageData() {
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    // NOTE: do not make async calls on unload if you want to avoid
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    //       strange bugs
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    remoteExec('unload_page_data');
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}
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function openHash() {
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    if (document.location.hash) {
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	var nid = document.location.hash.replace('#', '');
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	var node = jQuery('#' + nid);
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	if (node) { removeElementClass(node, "hidden"); }
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    };
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}
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jQuery(document).ready(openHash);
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function reloadComponent(compid, rql, registry, nodeid, extraargs) {
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    registry = registry || 'components';
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    rql = rql || '';
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    nodeid = nodeid || (compid + 'Component');
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    extraargs = extraargs || {};
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    var node = getNode(nodeid);
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    var d = asyncRemoteExec('component', compid, rql, registry, extraargs);
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    d.addCallback(function(result, req) {
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	var domnode = getDomFromResponse(result);
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	if (node) {
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	    // make sure the component is visible
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	    removeElementClass(node, "hidden");
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	    swapDOM(node, domnode);
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	    postAjaxLoad(domnode);
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	}
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    });
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    d.addCallback(resetCursor);
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    d.addErrback(function(xxx) {
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	updateMessage(_("an error occured"));
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	log(xxx);
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    });
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  return d;
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}
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/* XXX: HTML architecture of cubicweb boxes is a bit strange */
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function reloadBox(boxid, rql) {
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    return reloadComponent(boxid, rql, 'boxes', boxid);
0
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}
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function userCallbackThenUpdateUI(cbname, compid, rql, msg, registry, nodeid) {
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    var d = asyncRemoteExec('user_callback', cbname);
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    d.addCallback(function() {
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	reloadComponent(compid, rql, registry, nodeid);
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	if (msg) { updateMessage(msg); }
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    });
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    d.addCallback(resetCursor);
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    d.addErrback(function(xxx) {
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	updateMessage(_("an error occured"));
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	log(xxx);
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	return resetCursor();
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    });
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}
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function userCallbackThenReloadPage(cbname, msg) {
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    var d = asyncRemoteExec('user_callback', cbname);
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    d.addCallback(function() {
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	window.location.reload();
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	if (msg) { updateMessage(msg); }
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    });
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    d.addCallback(resetCursor);
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    d.addErrback(function(xxx) {
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	updateMessage(_("an error occured"));
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	log(xxx);
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	return resetCursor();
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    });
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}
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/*
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 * unregisters the python function registered on the server's side
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 * while the page was generated.
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 */
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function unregisterUserCallback(cbname) {
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    var d = asyncRemoteExec('unregister_user_callback', cbname);
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    d.addCallback(function() {resetCursor();});
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    d.addErrback(function(xxx) {
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	updateMessage(_("an error occured"));
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	log(xxx);
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	return resetCursor();
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    });
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}
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/* executes an async query to the server and replaces a node's
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 * content with the query result
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 *
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 * @param nodeId the placeholder node's id
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 * @param rql the RQL query
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 * @param vid the vid to apply to the RQL selection (default if not specified)
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 * @param extraparmas table of additional query parameters
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 */
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function replacePageChunk(nodeId, rql, vid, extraparams, /* ... */ swap, callback) {
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    var params = null;
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    if (callback) {
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	params = {callback: callback};
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    }
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   321
    var node = jQuery('#' + nodeId)[0];
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    var props = {};
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   323
    if (node) {
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	props['rql'] = rql;
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	props['fname'] = 'view';
0
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	props['pageid'] = pageid;
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	if (vid) { props['vid'] = vid; }
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	if (extraparams) { jQuery.extend(props, extraparams); }
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	// FIXME we need to do asURL(props) manually instead of
0
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	// passing `props` directly to loadxml because replacePageChunk
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	// is sometimes called (abusively) with some extra parameters in `vid`
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	var mode = swap?'swap':'replace';
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   333
	var url = JSON_BASE_URL + asURL(props);
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	jQuery(node).loadxhtml(url, params, 'get', mode);
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   335
    } else {
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   336
	log('Node', nodeId, 'not found');
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   337
    }
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   338
}
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   339
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diff changeset
   340
/* XXX deprecates?
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   341
 * fetches `url` and replaces `nodeid`'s content with the result
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   342
 * @param replacemode how the replacement should be done (default is 'replace')
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diff changeset
   343
 *  Possible values are :
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   344
 *    - 'replace' to replace the node's content with the generated HTML
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   345
 *    - 'swap' to replace the node itself with the generated HTML
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diff changeset
   346
 *    - 'append' to append the generated HTML to the node's content
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   347
 */
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   348
function loadxhtml(nodeid, url, /* ... */ replacemode) {
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diff changeset
   349
    jQuery('#' + nodeid).loadxhtml(url, null, 'post', replacemode);
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   350
}
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diff changeset
   351
0
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   352
/* XXX: this function should go in edition.js but as for now, htmlReplace
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diff changeset
   353
 * references it.
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diff changeset
   354
 *
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   355
 * replace all textareas with fckeditors.
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diff changeset
   356
 */
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diff changeset
   357
function buildWysiwygEditors(parent) {
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diff changeset
   358
    jQuery('textarea').each(function () {
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ea967a4f6ccb avoid installing editor n times for n ajax loads
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diff changeset
   359
	if (this.getAttribute('cubicweb:type') == 'wysiwyg') {
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diff changeset
   360
            // mark editor as instanciated, we may be called a number of times
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diff changeset
   361
            // (see postAjaxLoad)
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   362
            this.setAttribute('cubicweb:type', 'fckeditor');
0
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   363
	    if (typeof FCKeditor != "undefined") {
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diff changeset
   364
		var fck = new FCKeditor(this.id);
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diff changeset
   365
		fck.Config['CustomConfigurationsPath'] = fckconfigpath;
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diff changeset
   366
		fck.Config['DefaultLanguage'] = fcklang;
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diff changeset
   367
		fck.BasePath = "fckeditor/";
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   368
		fck.ReplaceTextarea();
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diff changeset
   369
	    } else {
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diff changeset
   370
		log('fckeditor could not be found.');
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diff changeset
   371
	    }
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diff changeset
   372
	}
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diff changeset
   373
    });
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diff changeset
   374
}
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   375
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   376
jQuery(document).ready(buildWysiwygEditors);
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   377
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diff changeset
   378
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diff changeset
   379
/*
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diff changeset
   380
 * takes a list of DOM nodes and removes all empty text nodes
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diff changeset
   381
 */
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diff changeset
   382
function stripEmptyTextNodes(nodelist) {
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diff changeset
   383
    var stripped = [];
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diff changeset
   384
    for (var i=0; i < nodelist.length; i++) {
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diff changeset
   385
	var node = nodelist[i];
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diff changeset
   386
	if (isTextNode(node) && !node.textContent.strip()) {
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diff changeset
   387
	    continue;
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diff changeset
   388
	} else {
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diff changeset
   389
	    stripped.push(node);
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diff changeset
   390
	}
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   391
    }
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   392
    return stripped;
7ff24154351d javascript + json refactoring
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   393
}
7ff24154351d javascript + json refactoring
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parents: 1407
diff changeset
   394
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
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   395
/* convenience function that returns a DOM node based on req's result. */
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   396
function getDomFromResponse(response) {
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   397
    if (typeof(response) == 'string') {
3073
09c6fe0db381 do postprocessing as in the xhtml case fix #345293
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3060
diff changeset
   398
	var doc = html2dom(response);
09c6fe0db381 do postprocessing as in the xhtml case fix #345293
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3060
diff changeset
   399
    } else {
09c6fe0db381 do postprocessing as in the xhtml case fix #345293
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diff changeset
   400
        var doc = response.documentElement;
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   401
    }
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   402
    var children = doc.childNodes;
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   403
    if (!children.length) {
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   404
	// no child (error cases) => return the whole document
3102
f2c4da6b008d use node cloning method that works with IE (6,7)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3073
diff changeset
   405
	return jQuery(doc).clone().context;
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   406
    }
1419
7ff24154351d javascript + json refactoring
sylvain.thenault@logilab.fr
parents: 1407
diff changeset
   407
    children = stripEmptyTextNodes(children);
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   408
    if (children.length == 1) {
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   409
	// only one child => return it
3102
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Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3073
diff changeset
   410
	return jQuery(children[0]).clone().context;
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   411
    }
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   412
    // several children => wrap them in a single node and return the wrap
3102
f2c4da6b008d use node cloning method that works with IE (6,7)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3073
diff changeset
   413
    return DIV(null, map(function(node) {
f2c4da6b008d use node cloning method that works with IE (6,7)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3073
diff changeset
   414
                           return jQuery(node).clone().context;
f2c4da6b008d use node cloning method that works with IE (6,7)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3073
diff changeset
   415
                         },
f2c4da6b008d use node cloning method that works with IE (6,7)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3073
diff changeset
   416
                         children));
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   417
}
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   418
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   419
function postJSON(url, data, callback) {
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   420
    return jQuery.post(url, data, callback, 'json');
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parents:
diff changeset
   421
}
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   422
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   423
function getJSON(url, data, callback){
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
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diff changeset
   424
    return jQuery.get(url, data, callback, 'json');
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   425
}
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   426
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   427
CubicWeb.provide('ajax.js');