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define(function(require){
var fs = require('fs')
var HTMLParser = require('$system/parse/htmlparser')
var makeSpace = function(indent) {
var out = '';
for (var i = 0; i < indent; i++) {
out += '\t';
}
return out;
}
var filterSpecial = function(child) {
var name = child.tag;
return name.indexOf('$') !== 0 && (! filterMethods(child)) && (! filterAttributes(child)) && (! filterHandlers(child));
}
var filterMethods = function(child) {
return child.tag === 'method';
}
var toMethod = function(child) {
var body = HTMLParser.reserialize(child.child[0]);
var args = child.attr.args || ''
var fn = 'function(' + args + ') {' + body + '}';
return {attr: child.attr, body: fn};
}
var filterAttributes = function(child) {
return child.tag === 'attribute';
}
var filterHandlers = function(child) {
return child.tag === 'handler';
}
var capitalize = function(string) {
return string.charAt(0).toUpperCase() + string.slice(1);
}
var objToString = function(obj) {
var out = '{';
var keys = Object.keys(obj);
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
var val = obj[key];
out += key + ': ';
if (typeof val === 'object') {
out += objToString(val);
} else if (val.indexOf('function(') === 0 ||
val.indexOf('Config({') === 0) {
out += val;
} else {
out += '"' + val + '"';
}
if (i < keys.length - 1) out += ', ';
}
out += '}';
return out;
}
var tagToFunc = function(child, indent, tagnames) {
var outputthis = filterSpecial(child);
var out = '';
var attr = child.attr || {};
var i;
var methods = child.child && child.child.filter(filterMethods).map(toMethod);
if (methods) {
for (i = 0; i < methods.length; i++) {
var method = methods[i];
attr[method.attr.name] = method.body;
}
}
var attributes = child.child && child.child.filter(filterAttributes);
if (attributes && attributes.length) {
if (! attr.attributes) {
attr.attributes = {};
}
for (i = 0; i < attributes.length; i++) {
var attribute = attributes[i].attr;
var val = attribute.value;
var type = capitalize(attribute.type);
if (type === 'String') {
val = '"' + val + '"';
}
attr.attributes[attribute.name] = 'Config({type: ' + type + ', value: ' + val + '})';
}
}
var handlers = child.child && child.child.filter(filterHandlers).map(toMethod);
if (handlers && handlers.length) {
if (! attr.attributes) {
attr.attributes = {};
}
var handlersByEvent = {};
for (i = 0; i < handlers.length; i++) {
var handler = handlers[i];
var attrname = handler.attr.event.substring(2);
if (! handlersByEvent[attrname]) handlersByEvent[attrname] = [];
handlersByEvent[attrname].push(handler.body);
}
for (var eventname in handlersByEvent) {
var listeners = handlersByEvent[eventname].join(', ')
attr.attributes[eventname] = 'Config({listeners: [' + listeners + ']})';
}
}
var children = child.child && child.child.filter(filterSpecial);
var hasChildren = children && children.length;
if (outputthis) {
out += makeSpace(indent);
var tagname = child.tag;
if (! tagnames[tagname]) tagnames[tagname] = 0;
tagnames[tagname]++;
out += tagname + '(';
out += objToString(attr);
if (hasChildren) out += ',\n'
}
if (hasChildren) {
indent++;
for (i = 0; i < children.length; i++) {
var newchild = children[i];
out += tagToFunc(newchild, indent, tagnames);
if (i !== children.length - 1) {
out += ','
}
out += '\n';
}
indent--;
}
if (outputthis) {
if (hasChildren) out += makeSpace(indent);
out += ')';
}
return out;
}
var findIncludes = function(tagnames) {
var tagbypath = {};
for (var i = 0; i < tagnames.length; i++) {
var tagname = tagnames[i];
for (var key in define.paths) {
var filepath = define.expandVariables('$' + key) + '/' + tagname + '.js';
if (fs.existsSync(filepath)) {
if (! tagbypath[key]) {
tagbypath[key] = [];
}
tagbypath[key].push(tagname);
break;
}
}
}
var includes = ['require'];
for (var key in tagbypath) {
includes.push('$' + key + '$');
includes = includes.concat(tagbypath[key]);
}
return includes;
}
return function(dre) {
var parsed = HTMLParser(dre);
var tagnames = {};
var body = tagToFunc(parsed.node, 2, tagnames);
var includes = findIncludes(Object.keys(tagnames));
var out = 'define.class(\'$server/composition\', function(' + includes.join(', ') + '){\n'
out += '\tthis.render = function() {\n'
out += '\t\treturn [\n';
out += body;
out += '\t\t];\n\t}\n});'
return out;
}
})
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