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[ADD] QWeb: add async api (backward compatible)

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bzr revid: fme@openerp.com-20130814164322-cny24d0i6tg4ftvn
This commit is contained in:
Fabien Meghazi
2013-08-14 18:43:22 +02:00
parent a9ffb0061b
commit 81e028b791
1 changed files with 65 additions and 29 deletions
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addons/web/static/lib/qweb/qweb2.js
+65 -29
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@@ -226,10 +226,27 @@ QWeb2.Engine = (function() {
}
QWeb2.tools.extend(Engine.prototype, {
add_template : function(template) {
/**
* Add a template to the engine
*
* @param {String|Document} template Template as string or url or DOM Document
* @param {Function} [callback] Called when the template is loaded, force async request
*/
add_template : function(template, callback) {
var self = this;
this.templates_resources.push(template);
if (template.constructor === String) {
template = this.load_xml(template);
return this.load_xml(template, function (err, xDoc) {
if (err) {
if (callback) {
return callback(err);
} else {
throw err;
}
}
self.add_template(xDoc, callback);
});
template = this.load_xml(template, callback);
}
var ec = (template.documentElement && template.documentElement.childNodes) || template.childNodes || [];
for (var i = 0; i < ec.length; i++) {
@@ -262,35 +279,56 @@ QWeb2.Engine = (function() {
}
}
}
if (callback) {
callback(null, template);
}
return true;
},
load_xml : function(s) {
load_xml : function(s, callback) {
var self = this;
var async = !!callback;
s = this.tools.trim(s);
if (s.charAt(0) === '<') {
return this.load_xml_string(s);
var tpl = this.load_xml_string(s);
if (callback) {
callback(null, tpl);
}
return tpl;
} else {
var req = this.get_xhr();
if (req) {
// TODO: third parameter is async : https://developer.mozilla.org/en/XMLHttpRequest#open()
// do an on_ready in QWeb2{} that could be passed to add_template
if (this.debug) {
s += '?debug=' + (new Date()).getTime(); // TODO fme: do it properly in case there's already url parameters
}
req.open('GET', s, false);
req.send(null);
var xDoc = req.responseXML;
if (xDoc) {
if (!xDoc.documentElement) {
throw new Error("QWeb2: This xml document has no root document : " + xDoc.responseText);
}
if (xDoc.documentElement.nodeName == "parsererror") {
return this.tools.exception(xDoc.documentElement.childNodes[0].nodeValue);
}
return xDoc;
} else {
return this.load_xml_string(req.responseText);
}
if (this.debug) {
s += '?debug=' + (new Date()).getTime(); // TODO fme: do it properly in case there's already url parameters
}
req.open('GET', s, async);
if (async) {
req.onreadystatechange = function() {
if (req.readyState == 4) {
if (req.status == 200) {
callback(null, self._parse_from_request(req));
} else {
callback(new Error("Can't load template, http status " + req.status));
}
}
};
}
req.send(null);
if (!async) {
return this._parse_from_request(req);
}
}
},
_parse_from_request: function(req) {
var xDoc = req.responseXML;
if (xDoc) {
if (!xDoc.documentElement) {
throw new Error("QWeb2: This xml document has no root document : " + xDoc.responseText);
}
if (xDoc.documentElement.nodeName == "parsererror") {
throw new Error("QWeb2: Could not parse document :" + xDoc.documentElement.childNodes[0].nodeValue);
}
return xDoc;
} else {
return this.load_xml_string(req.responseText);
}
},
load_xml_string : function(s) {
@@ -298,17 +336,15 @@ QWeb2.Engine = (function() {
var dp = new DOMParser();
var r = dp.parseFromString(s, "text/xml");
if (r.body && r.body.firstChild && r.body.firstChild.nodeName == 'parsererror') {
return this.tools.exception(r.body.innerText);
throw new Error("QWeb2: Could not parse document :" + r.body.innerText);
}
return r;
}
var xDoc;
try {
// new ActiveXObject("Msxml2.DOMDocument.4.0");
xDoc = new ActiveXObject("MSXML2.DOMDocument");
} catch (e) {
return this.tools.exception(
"Could not find a DOM Parser: " + e.message);
throw new Error("Could not find a DOM Parser: " + e.message);
}
xDoc.async = false;
xDoc.preserveWhiteSpace = true;
@@ -325,7 +361,7 @@ QWeb2.Engine = (function() {
try {
return new ActiveXObject('MSXML2.XMLHTTP.3.0');
} catch (e) {
return null;
throw new Error("Could not get XHR");
}
},
compile : function(node) {