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/**
* DOM generation class
*/
exports.DOM = DOM;
exports.htmlEscape = htmlEscape;
exports.normalizeHeaderToId = normalizeHeaderToId;
//////////////////////////////////////////////////////////
function htmlEscape(text){
return text
.replace(/&/g, '&')
.replace(/</g, '<')
.replace(/>/g, '>')
.replace(/\{\{/g, '<span>{{</span>')
.replace(/\}\}/g, '<span>}}</span>');
}
function nonEmpty(header) {
return !!header;
}
function idFromCurrentHeaders(headers) {
if (headers.length === 1) return headers[0];
// Do not include the first level title, as that's the title of the page.
return headers.slice(1).filter(nonEmpty).join('_');
}
function normalizeHeaderToId(header) {
if (typeof header !== 'string') {
return '';
}
return header.toLowerCase()
.replace(/<.*>/g, '') // html tags
.replace(/[\!\?\:\.\']/g, '') // special characters
.replace(/&#\d\d;/g, '') // html entities
.replace(/\(.*\)/mg, '') // stuff in parenthesis
.replace(/\s$/, '') // trailing spaces
.replace(/\s+/g, '-'); // replace whitespaces with dashes
}
function DOM() {
this.out = [];
this.headingDepth = 0;
this.currentHeaders = [];
this.anchors = [];
}
var INLINE_TAGS = {
i: true,
b: true,
a: true
};
DOM.prototype = {
toString: function() {
return this.out.join('');
},
text: function(content) {
if (typeof content == "string") {
this.out.push(htmlEscape(content));
} else if (typeof content == 'function') {
content.call(this, this);
} else if (content instanceof Array) {
this.ul(content);
}
},
html: function(html) {
if (!html) return;
var self = this;
// rewrite header levels, add ids and collect the ids
html = html.replace(/<h(\d)(.*?)>([\s\S]+?)<\/h\1>/gm, function(_, level, attrs, content) {
level = parseInt(level, 10) + self.headingDepth; // change header level based on the context
self.currentHeaders[level - 1] = normalizeHeaderToId(content);
self.currentHeaders.length = level;
var id = idFromCurrentHeaders(self.currentHeaders);
self.anchors.push(id);
return '<h' + level + attrs + ' id="' + id + '">' + content + '</h' + level + '>';
});
// collect anchors
html = html.replace(/<a name="(\w*)">/g, function(match, anchor) {
self.anchors.push(anchor);
return match;
});
this.out.push(html);
},
tag: function(name, attr, text) {
if (!text) {
text = attr;
attr = {};
if (name == 'code')
attr['ng:non-bindable'] = '';
}
this.out.push('<' + name);
for(var key in attr) {
this.out.push(" " + key + '="' + attr[key] + '"');
}
this.out.push('>');
this.text(text);
this.out.push('</' + name + '>');
if (!INLINE_TAGS[name])
this.out.push('\n');
},
code: function(text) {
this.tag('pre', {'class':"prettyprint linenums"}, text);
},
div: function(attr, text) {
this.tag('div', attr, text);
},
h: function(heading, content, fn){
if (content==undefined || (content instanceof Array && content.length == 0)) return;
this.headingDepth++;
this.currentHeaders[this.headingDepth - 1] = normalizeHeaderToId(heading);
this.currentHeaders.length = this.headingDepth;
var className = null,
anchor = null;
if (typeof heading == 'string') {
var id = idFromCurrentHeaders(this.currentHeaders);
this.anchors.push(id);
anchor = {'id': id};
var classNameValue = this.currentHeaders[this.headingDepth - 1]
if(classNameValue == 'hide') classNameValue = '';
className = {'class': classNameValue};
}
this.tag('h' + this.headingDepth, anchor, heading);
if (content instanceof Array) {
this.ul(content, className, fn);
} else if (fn) {
this.tag('div', className, function() {
fn.call(this, content);
});
} else {
this.tag('div', className, content);
}
this.headingDepth--;
},
h1: function(attr, text) {
this.tag('h1', attr, text);
},
h2: function(attr, text) {
this.tag('h2', attr, text);
},
h3: function(attr, text) {
this.tag('h3', attr, text);
},
p: function(attr, text) {
this.tag('p', attr, text);
},
ul: function(list, attr, fn) {
if (typeof attr == 'function') {
fn = attr;
attr = {};
}
this.tag('ul', attr, function(dom){
list.forEach(function(item){
dom.out.push('<li>');
dom.text(fn ? fn(item) : item);
dom.out.push('</li>\n');
});
});
}
};
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