692 lines
29 KiB
JavaScript
692 lines
29 KiB
JavaScript
// TODO: trim support
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// TODO: line number -> https://bugzilla.mozilla.org/show_bug.cgi?id=618650
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var QWeb2 = {
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expressions_cache: {},
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reserved_words: 'true,false,NaN,null,undefined,debugger,in,instanceof,new,function,return,this,typeof,eval,Math,RegExp,Array,Object'.split(','),
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actions_precedence: 'foreach,if,call,set,esc,escf,raw,rawf,js,debug,log'.split(','),
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word_replacement: {
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'and': '&&',
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'or': '||',
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'gt': '>',
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'gte': '>=',
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'lt': '<',
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'lte': '<='
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},
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tools: {
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exception: function(message, context) {
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context = context || {};
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var prefix = 'QWeb2';
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if (context.template) {
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prefix += " - template['" + context.template + "']";
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}
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throw prefix + ": " + message;
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},
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trim: function(s, mode) {
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switch (mode) {
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case "left":
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return s.replace(/^\s*/, "");
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case "right":
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return s.replace(/\s*$/, "");
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default:
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return s.replace(/^\s*|\s*$/g, "");
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}
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},
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js_escape: function(s, noquotes) {
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return (noquotes ? '' : "'") + s.replace(/\r?\n/g, "\\n").replace(/'/g, "\\'") + (noquotes ? '' : "'");
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},
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html_escape: function(s, attribute) {
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if (s === null || s === undefined) {
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return '';
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}
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s = (new String(s)).replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>');
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if (attribute) {
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s = s.replace(/"/g, '"');
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}
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return s;
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},
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gen_attribute: function(o) {
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if (o !== null && o !== undefined) {
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if (o.constructor === Array) {
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if (o[1] !== null && o[1] !== undefined) {
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return ' ' + o[0] + '="' + this.html_escape(o[1]) + '"';
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}
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} else if (typeof o === 'object') {
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var r = '';
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for (var k in o) {
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if (o.hasOwnProperty(k)) {
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r += this.gen_attribute([k, o[k]]);
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}
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}
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return r;
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}
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}
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return '';
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},
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extend: function(dst, src, exclude) {
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for (var p in src) {
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if (src.hasOwnProperty(p) && !(exclude && this.arrayIndexOf(exclude, p) !== -1)) {
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dst[p] = src[p];
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}
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}
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return dst;
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},
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arrayIndexOf : function(array, item) {
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for (var i = 0, ilen = array.length; i < ilen; i++) {
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if (array[i] === item) {
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return i;
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}
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}
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return -1;
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},
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xml_node_to_string : function(node, childs_only) {
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if (childs_only) {
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var childs = node.childNodes, r = [];
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for (var i = 0, ilen = childs.length; i < ilen; i++) {
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r.push(this.xml_node_to_string(childs[i]));
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}
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return r.join('');
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} else {
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if (node.xml !== undefined) {
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return node.xml;
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} else {
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return (new XMLSerializer()).serializeToString(node);
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}
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}
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},
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xpath_selectNodes : function(node, expr) {
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if (node.selectNodes !== undefined) {
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return node.selectNodes(expr);
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} else {
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var xpath = new XPathEvaluator();
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try {
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var result = xpath.evaluate(expr, node, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE, null);
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} catch(error) {
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this.exception("Error with XPath expression '" + expr + "' : " + error);
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}
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var r = [];
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if (result != null) {
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var element;
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while (element = result.iterateNext()) {
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r.push(element);
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}
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}
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return r
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}
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},
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call: function(context, template, old_dict, _import, callback) {
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var new_dict = this.extend({}, old_dict);
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new_dict['__caller__'] = old_dict['__template__'];
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if (callback) {
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new_dict['__content__'] = callback(context, new_dict);
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}
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var r = context.engine._render(template, new_dict);
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if (_import) {
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if (_import === '*') {
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this.extend(old_dict, new_dict, ['__caller__', '__template__']);
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} else {
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_import = _import.split(',');
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for (var i = 0, ilen = _import.length; i < ilen; i++) {
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var v = _import[i];
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old_dict[v] = new_dict[v];
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}
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}
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}
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return r;
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},
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foreach: function(context, enu, as, old_dict, callback) {
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if (enu != null) {
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var size, new_dict = this.extend({}, old_dict);
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new_dict[as + "_all"] = enu;
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var as_value = as + "_value",
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as_index = as + "_index",
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as_first = as + "_first",
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as_last = as + "_last",
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as_parity = as + "_parity";
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if (size = enu.length) {
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new_dict[as + "_size"] = size;
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for (var j = 0, jlen = enu.length; j < jlen; j++) {
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var cur = enu[j];
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new_dict[as_value] = cur;
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new_dict[as_index] = j;
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new_dict[as_first] = j === 0;
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new_dict[as_last] = j + 1 === size;
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new_dict[as_parity] = (j % 2 == 1 ? 'odd' : 'even');
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if (cur.constructor === Object) {
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this.extend(new_dict, cur);
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}
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new_dict[as] = cur;
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callback(context, new_dict);
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}
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} else if (enu.constructor == Number) {
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var _enu = [];
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for (var i = 0; i < enu; i++) {
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_enu.push(i);
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}
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this.foreach(context, enu, as, old_dict, callback);
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} else {
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var index = 0;
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for (var k in enu) {
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if (enu.hasOwnProperty(k)) {
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var v = enu[k];
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new_dict[as_value] = v;
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new_dict[as_index] = index;
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new_dict[as_first] = index === 0;
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new_dict[as_parity] = (j % 2 == 1 ? 'odd' : 'even');
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new_dict[as] = k;
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callback(context, new_dict);
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index += 1;
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}
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}
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}
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} else {
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this.exception("No enumerator given to foreach", context);
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}
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}
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}
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};
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QWeb2.Engine = (function() {
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function Engine() {
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// TODO: handle prefix at template level : t-prefix="x"
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this.prefix = 't';
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this.debug = false;
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this.templates_resources = []; // TODO: implement this.reload()
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this.templates = {};
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this.compiled_templates = {};
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this.extend_templates = {};
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this.dict = {};
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this.tools = QWeb2.tools;
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this.jQuery = window.jQuery;
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for (var i = 0; i < arguments.length; i++) {
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this.add_template(arguments[i]);
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}
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}
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QWeb2.tools.extend(Engine.prototype, {
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add_template : function(template) {
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this.templates_resources.push(template);
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if (template.constructor === String) {
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template = this.load_xml(template);
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}
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var ec = (template.documentElement && template.documentElement.childNodes) || template.childNodes || [];
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for (var i = 0; i < ec.length; i++) {
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var node = ec[i];
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if (node.nodeType === 1) {
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if (node.nodeName == 'parsererror') {
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return this.tools.exception(node.innerText);
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}
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var name = node.getAttribute(this.prefix + '-name');
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var extend = node.getAttribute(this.prefix + '-extend');
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if (name && extend) {
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// Clone template and extend it
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if (!this.templates[extend]) {
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return this.tools.exception("Can't clone undefined template " + extend);
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}
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this.templates[name] = this.templates[extend].cloneNode(true);
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extend = name;
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name = undefined;
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}
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if (name) {
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this.templates[name] = node;
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} else if (extend) {
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delete(this.compiled_templates[extend]);
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if (this.extend_templates[extend]) {
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this.extend_templates[extend].push(node);
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} else {
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this.extend_templates[extend] = [node];
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}
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}
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}
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}
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return true;
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},
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load_xml : function(s) {
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s = s.replace(/^\s*|\s*$/g, '');
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if (this.tools.trim(s)[0] === '<') {
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return this.load_xml_string(s);
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} else {
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var req = this.get_xhr();
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if (req) {
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// TODO: third parameter is async : https://developer.mozilla.org/en/XMLHttpRequest#open()
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// do an on_ready in QWeb2{} that could be passed to add_template
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req.open('GET', s, false);
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req.send(null);
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if (req.responseXML) {
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if (req.responseXML.documentElement.nodeName == "parsererror") {
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return this.tools.exception(req.responseXML.documentElement.childNodes[0].nodeValue);
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}
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return req.responseXML;
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} else {
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return this.load_xml_string(req.responseText);
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}
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}
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}
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},
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load_xml_string : function(s) {
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if (window.DOMParser) {
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var dp = new DOMParser();
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var r = dp.parseFromString(s, "text/xml");
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if (r.body && r.body.firstChild && r.body.firstChild.nodeName == 'parsererror') {
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return this.tools.exception(r.body.innerText);
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}
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return r;
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}
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var xDoc;
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try {
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// new ActiveXObject("Msxml2.DOMDocument.4.0");
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xDoc = new ActiveXObject("MSXML2.DOMDocument");
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} catch (e) {
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return this.tools.exception("Could not find a DOM Parser");
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}
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xDoc.async = false;
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xDoc.preserveWhiteSpace = true;
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xDoc.loadXML(s);
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return xDoc;
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},
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get_xhr : function() {
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if (window.XMLHttpRequest) {
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return new window.XMLHttpRequest();
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}
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try {
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return new ActiveXObject('MSXML2.XMLHTTP.3.0');
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} catch (e) {
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return null;
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}
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},
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compile : function(node) {
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var e = new QWeb2.Element(this, node);
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var template = node.getAttribute(this.prefix + '-name');
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return " /* 'this' refers to Qweb2.Engine instance */\n" +
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" var context = { engine : this, template : " + (this.tools.js_escape(template)) + " };\n" +
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" dict = dict || {};\n" +
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" dict['__template__'] = '" + template + "';\n" +
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" var r = [];\n" +
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" /* START TEMPLATE */ try {\n" +
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(e.compile()) + "\n" +
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" /* END OF TEMPLATE */ } catch(error) {\n" +
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" context.engine.tools.exception('Runtime Error: ' + error, context);\n" +
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" }\n" +
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" return r.join('');";
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},
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render : function(template, dict) {
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if (this.debug && window['console'] !== undefined) {
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console.time("QWeb render template " + template);
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}
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var r = this._render(template, dict);
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if (this.debug && window['console'] !== undefined) {
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console.timeEnd("QWeb render template " + template);
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}
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return r;
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},
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_render : function(template, dict) {
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if (this.compiled_templates[template]) {
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return this.compiled_templates[template].apply(this, [dict || {}]);
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} else if (this.templates[template]) {
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var ext;
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if (ext = this.extend_templates[template]) {
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var extend_node;
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while (extend_node = ext.shift()) {
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this.extend(template, extend_node);
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}
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}
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var code = this.compile(this.templates[template]), tcompiled;
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try {
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tcompiled = new Function(['dict'], code);
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} catch (error) {
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if (this.debug && window.console) {
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console.log(code);
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}
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this.tools.exception("Error evaluating template: " + error, { template: name });
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}
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if (!tcompiled) {
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this.tools.exception("Error evaluating template: (IE?)" + error, { template: name });
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}
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this.compiled_templates[template] = tcompiled;
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return this.render(template, dict);
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} else {
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return this.tools.exception("Template '" + template + "' not found");
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}
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},
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extend : function(template, extend_node) {
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if (!this.jQuery) {
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return this.tools.exception("Can't extend template " + template + " without jQuery");
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}
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for (var i = 0, ilen = extend_node.childNodes.length; i < ilen; i++) {
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var child = extend_node.childNodes[i];
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if (child.nodeType === 1) {
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var xpath = child.getAttribute(this.prefix + '-xpath'),
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jquery = child.getAttribute(this.prefix + '-jquery'),
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operation = child.getAttribute(this.prefix + '-operation'),
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target,
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error_msg = "Error while extending template '" + template;
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if (jquery) {
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target = this.jQuery(jquery, this.templates[template]);
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} else if (xpath) {
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// NOTE: due to the XPath implementation, extending a template will only work once
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// when using XPath because XPathResult won't match objects with other constructor than 'Element'
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// As jQuery will create HTMLElements, xpath will ignore them then causing problems when a
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// template has already been extended. XPath selectors will probably be removed in QWeb.
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target = this.jQuery(this.tools.xpath_selectNodes(this.templates[template], xpath));
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} else {
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this.tools.exception(error_msg + "No expression given");
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}
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error_msg += "' (expression='" + (jquery || xpath) + "') : ";
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var inner = this.tools.xml_node_to_string(child, true);
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if (operation) {
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var allowed_operations = "append,prepend,before,after,replace,inner".split(',');
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if (this.tools.arrayIndexOf(allowed_operations, operation) == -1) {
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this.tools.exception(error_msg + "Invalid operation : '" + operation + "'");
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}
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operation = {'replace' : 'replaceWith', 'inner' : 'html'}[operation] || operation;
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target[operation]($(inner));
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} else {
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try {
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var f = new Function(['$'], inner);
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} catch(error) {
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return this.tools.exception("Parse " + error_msg + error);
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}
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try {
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f.apply(target, [this.jQuery]);
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} catch(error) {
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return this.tools.exception("Runtime " + error_msg + error);
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}
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}
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}
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}
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}
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});
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return Engine;
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})();
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QWeb2.Element = (function() {
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function Element(engine, node) {
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this.engine = engine;
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this.node = node;
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this.tag = node.tagName;
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this.actions = {};
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this.actions_done = [];
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this.attributes = {};
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this.children = [];
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this._top = [];
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this._bottom = [];
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this._indent = 1;
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this.process_children = true;
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var childs = this.node.childNodes;
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if (childs) {
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for (var i = 0, ilen = childs.length; i < ilen; i++) {
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this.children.push(new QWeb2.Element(this.engine, childs[i]));
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}
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}
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var attrs = this.node.attributes;
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if (attrs) {
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for (var j = 0, jlen = attrs.length; j < jlen; j++) {
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var attr = attrs[j];
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var name = attr.name;
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var m = name.match(new RegExp("^" + this.engine.prefix + "-(.+)"));
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if (m) {
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name = m[1];
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if (name === 'name') {
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continue;
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}
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this.actions[name] = attr.value;
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} else {
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this.attributes[name] = attr.value;
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}
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}
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}
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}
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QWeb2.tools.extend(Element.prototype, {
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compile : function() {
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var r = [],
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instring = false,
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lines = this._compile().split('\n');
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for (var i = 0, ilen = lines.length; i < ilen; i++) {
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var m, line = lines[i];
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if (m = line.match(/^(\s*)\/\/@string=(.*)/)) {
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if (instring) {
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if (this.engine.debug) {
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// Split string lines in indented r.push arguments
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r.push((m[2].indexOf("\\n") != -1 ? "',\n\t" + m[1] + "'" : '') + m[2]);
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} else {
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r.push(m[2]);
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}
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} else {
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r.push(m[1] + "r.push('" + m[2]);
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instring = true;
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}
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} else {
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if (instring) {
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r.push("');\n");
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}
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instring = false;
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r.push(line + '\n');
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}
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}
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return r.join('');
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},
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_compile : function() {
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switch (this.node.nodeType) {
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case 3:
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case 4:
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this.top_string(this.node.data);
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break;
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case 1:
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this.compile_element();
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}
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var r = this._top.join('');
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if (this.process_children) {
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for (var i = 0, ilen = this.children.length; i < ilen; i++) {
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var child = this.children[i];
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child._indent = this._indent;
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r += child._compile();
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}
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}
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r += this._bottom.join('');
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return r;
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},
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format_expression : function(e) {
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/* Naive format expression builder. Replace reserved words and variables to dict[variable]
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* Does not handle spaces before dot yet, and causes problems for anonymous functions. Use t-js="" for that */
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if (QWeb2.expressions_cache[e]) {
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return QWeb2.expressions_cache[e];
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}
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var chars = e.split(''),
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instring = '',
|
|
invar = '',
|
|
invar_pos = 0,
|
|
r = '';
|
|
chars.push(' ');
|
|
for (var i = 0, ilen = chars.length; i < ilen; i++) {
|
|
var c = chars[i];
|
|
if (instring.length) {
|
|
if (c === instring && chars[i - 1] !== "\\") {
|
|
instring = '';
|
|
}
|
|
} else if (c === '"' || c === "'") {
|
|
instring = c;
|
|
} else if (c.match(/[a-zA-Z_\$]/) && !invar.length) {
|
|
invar = c;
|
|
invar_pos = i;
|
|
continue;
|
|
} else if (c.match(/\W/) && invar.length) {
|
|
// TODO: Should check for possible spaces before dot
|
|
if (chars[invar_pos - 1] !== '.' && QWeb2.tools.arrayIndexOf(QWeb2.reserved_words, invar) < 0) {
|
|
invar = QWeb2.word_replacement[invar] || ("dict['" + invar + "']");
|
|
}
|
|
r += invar;
|
|
invar = '';
|
|
} else if (invar.length) {
|
|
invar += c;
|
|
continue;
|
|
}
|
|
r += c;
|
|
}
|
|
r = r.slice(0, -1);
|
|
QWeb2.expressions_cache[e] = r;
|
|
return r;
|
|
},
|
|
string_interpolation : function(s) {
|
|
if (!s) {
|
|
return "''";
|
|
}
|
|
var regex = /^{(.*)}(.*)/,
|
|
src = s.split(/#/),
|
|
r = [];
|
|
for (var i = 0, ilen = src.length; i < ilen; i++) {
|
|
var val = src[i],
|
|
m = val.match(regex);
|
|
if (m) {
|
|
r.push("(" + this.format_expression(m[1]) + ")");
|
|
if (m[2]) {
|
|
r.push(this.engine.tools.js_escape(m[2]));
|
|
}
|
|
} else if (!(i === 0 && val === '')) {
|
|
r.push(this.engine.tools.js_escape((i === 0 ? '' : '#') + val));
|
|
}
|
|
}
|
|
return r.join(' + ');
|
|
},
|
|
indent : function() {
|
|
return this._indent++;
|
|
},
|
|
dedent : function() {
|
|
if (this._indent !== 0) {
|
|
return this._indent--;
|
|
}
|
|
},
|
|
get_indent : function() {
|
|
return new Array(this._indent + 1).join("\t");
|
|
},
|
|
top : function(s) {
|
|
return this._top.push(this.get_indent() + s + '\n');
|
|
},
|
|
top_string : function(s) {
|
|
return this._top.push(this.get_indent() + "//@string=" + this.engine.tools.js_escape(s, true) + '\n');
|
|
},
|
|
bottom : function(s) {
|
|
return this._bottom.unshift(this.get_indent() + s + '\n');
|
|
},
|
|
bottom_string : function(s) {
|
|
return this._bottom.unshift(this.get_indent() + "//@string=" + this.engine.tools.js_escape(s, true) + '\n');
|
|
},
|
|
compile_element : function() {
|
|
for (var i = 0, ilen = QWeb2.actions_precedence.length; i < ilen; i++) {
|
|
var a = QWeb2.actions_precedence[i];
|
|
if (a in this.actions) {
|
|
var value = this.actions[a];
|
|
var key = 'compile_action_' + a;
|
|
if (!this[key]) {
|
|
this.engine.tools.exception("No handler method for action '" + a + "'");
|
|
}
|
|
this[key](value);
|
|
}
|
|
}
|
|
if (this.tag !== this.engine.prefix) {
|
|
var tag = "<" + this.tag;
|
|
for (var a in this.attributes) {
|
|
tag += this.engine.tools.gen_attribute([a, this.attributes[a]]);
|
|
}
|
|
this.top_string(tag);
|
|
if (this.actions.att) {
|
|
this.top("r.push(context.engine.tools.gen_attribute(" + (this.format_expression(this.actions.att)) + "));");
|
|
}
|
|
for (var a in this.actions) {
|
|
var v = this.actions[a];
|
|
var m = a.match(/att-(.+)/);
|
|
if (m) {
|
|
this.top("r.push(context.engine.tools.gen_attribute(['" + m[1] + "', (" + (this.format_expression(v)) + ")]));");
|
|
}
|
|
var m = a.match(/attf-(.+)/);
|
|
if (m) {
|
|
this.top("r.push(context.engine.tools.gen_attribute(['" + m[1] + "', (" + (this.string_interpolation(v)) + ")]));");
|
|
}
|
|
}
|
|
if (this.children.length || this.actions.opentag === 'true') {
|
|
this.top_string(">");
|
|
this.bottom_string("</" + this.tag + ">");
|
|
} else {
|
|
this.top_string("/>");
|
|
}
|
|
}
|
|
},
|
|
compile_action_if : function(value) {
|
|
this.top("if (" + (this.format_expression(value)) + ") {");
|
|
this.bottom("}");
|
|
this.indent();
|
|
},
|
|
compile_action_foreach : function(value) {
|
|
var as = this.actions['as'] || value.replace(/[^a-zA-Z0-9]/g, '_');
|
|
//TODO: exception if t-as not valid
|
|
this.top("context.engine.tools.foreach(context, " + (this.format_expression(value)) + ", " + (this.engine.tools.js_escape(as)) + ", dict, function(context, dict) {");
|
|
this.bottom("});");
|
|
this.indent();
|
|
},
|
|
compile_action_call : function(value) {
|
|
var _import = this.actions['import'] || '';
|
|
if (this.children.length === 0) {
|
|
return this.top("r.push(context.engine.tools.call(context, " + (this.engine.tools.js_escape(value)) + ", dict, " + (this.engine.tools.js_escape(_import)) + "));");
|
|
} else {
|
|
this.top("r.push(context.engine.tools.call(context, " + (this.engine.tools.js_escape(value)) + ", dict, " + (this.engine.tools.js_escape(_import)) + ", function(context, dict) {");
|
|
this.bottom("}));");
|
|
this.indent();
|
|
this.top("var r = [];");
|
|
return this.bottom("return r.join('');");
|
|
}
|
|
},
|
|
compile_action_set : function(value) {
|
|
if (this.actions['value']) {
|
|
this.top("dict['" + value + "'] = (" + (this.format_expression(this.actions['value'])) + ");");
|
|
this.process_children = false;
|
|
} else {
|
|
if (this.children.length === 0) {
|
|
this.top("dict['" + value + "'] = '';");
|
|
} else if (this.children.length === 1 && this.children[0].node.nodeType === 3) {
|
|
this.top("dict['" + value + "'] = " + (this.engine.tools.js_escape(this.children[0].node.data)) + ";");
|
|
this.process_children = false;
|
|
} else {
|
|
this.top("dict['" + value + "'] = (function(dict) {");
|
|
this.bottom("})(dict);");
|
|
this.indent();
|
|
this.top("var r = [];");
|
|
this.bottom("return r.join('');");
|
|
}
|
|
}
|
|
},
|
|
compile_action_esc : function(value) {
|
|
this.top("r.push(context.engine.tools.html_escape(" + (this.format_expression(value)) + "));");
|
|
},
|
|
compile_action_escf : function(value) {
|
|
this.top("r.push(context.engine.tools.html_escape(" + (this.string_interpolation(value)) + "));");
|
|
},
|
|
compile_action_raw : function(value) {
|
|
this.top("r.push(" + (this.format_expression(value)) + ");");
|
|
},
|
|
compile_action_rawf : function(value) {
|
|
this.top("r.push(" + (this.string_interpolation(value)) + ");");
|
|
},
|
|
compile_action_js : function(value) {
|
|
this.top("(function(" + value + ") {");
|
|
this.bottom("})(dict);");
|
|
this.indent();
|
|
if (this.children.length === 1) {
|
|
var lines = this.children[0].node.data.split(/\r?\n/);
|
|
for (var i = 0, ilen = lines.length; i < ilen; i++) {
|
|
this.top(lines[i]);
|
|
}
|
|
} else {
|
|
this.engine.tools.exception("'js' code block contains " + this.children.length + " nodes instead of 1");
|
|
}
|
|
// Maybe I could handle the children ?
|
|
this.process_children = false;
|
|
},
|
|
compile_action_debug : function(value) {
|
|
this.top("debugger;");
|
|
},
|
|
compile_action_log : function(value) {
|
|
this.top("console.log(" + this.format_expression(value) + "});");
|
|
}
|
|
});
|
|
return Element;
|
|
})();
|