128 lines
3.2 KiB
JavaScript
128 lines
3.2 KiB
JavaScript
define( [ "jquery", "underscore" ], function($) {
|
|
|
|
var toc = {
|
|
extensionId: "toc",
|
|
extensionName: "Table Of Content",
|
|
optional: true,
|
|
settingsBloc: [
|
|
'<p>Generates tables of content using the marker [TOC].</p>'
|
|
].join("")
|
|
};
|
|
|
|
// Used to generate an anchor
|
|
function slugify(text)
|
|
{
|
|
return text.toLowerCase()
|
|
.replace(/\s+/g, '-') // Replace spaces with -
|
|
.replace(/[^\w\-]+/g, '') // Remove all non-word chars
|
|
.replace(/\-\-+/g, '-') // Replace multiple - with single -
|
|
.replace(/^-+/, '') // Trim - from start of text
|
|
.replace(/-+$/, ''); // Trim - from end of text
|
|
}
|
|
|
|
// TOC element description
|
|
function TocElement(tagName, anchor, text) {
|
|
this.tagName = tagName;
|
|
this.anchor = anchor;
|
|
this.text = text;
|
|
this.children = [];
|
|
}
|
|
TocElement.prototype.childrenToString = function() {
|
|
if(this.children.length === 0) {
|
|
return "";
|
|
}
|
|
var result = "<ul>";
|
|
_.each(this.children, function(child) {
|
|
result += child.toString();
|
|
});
|
|
result += "</ul>";
|
|
return result;
|
|
};
|
|
TocElement.prototype.toString = function() {
|
|
var result = "<li>";
|
|
if(this.anchor && this.text) {
|
|
result += '<a href="#' + this.anchor + '">' + this.text + '</a>';
|
|
}
|
|
result += this.childrenToString() + "</li>";
|
|
return result;
|
|
};
|
|
|
|
// Transform flat list of TocElement into a tree
|
|
function groupTags(array, level) {
|
|
level = level || 1;
|
|
var tagName = "H" + level;
|
|
var result = [];
|
|
|
|
var currentElement = undefined;
|
|
function pushCurrentElement() {
|
|
if(currentElement !== undefined) {
|
|
if(currentElement.children.length > 0) {
|
|
currentElement.children = groupTags(currentElement.children, level + 1);
|
|
}
|
|
result.push(currentElement);
|
|
}
|
|
}
|
|
|
|
_.each(array, function(element, index) {
|
|
if(element.tagName != tagName) {
|
|
if(currentElement === undefined) {
|
|
currentElement = new TocElement();
|
|
}
|
|
currentElement.children.push(element);
|
|
}
|
|
else {
|
|
pushCurrentElement();
|
|
currentElement = element;
|
|
}
|
|
});
|
|
pushCurrentElement();
|
|
return result;
|
|
}
|
|
|
|
// Build the TOC
|
|
function buildToc() {
|
|
var anchorList = {};
|
|
function createAnchor(element) {
|
|
var id = element.prop("id") || slugify(element.text());
|
|
var anchor = id;
|
|
var index = 0;
|
|
while(_.has(anchorList, anchor)) {
|
|
anchor = id + "-" + (++index);
|
|
}
|
|
anchorList[anchor] = true;
|
|
// Update the id of the element
|
|
element.prop("id", anchor);
|
|
return anchor;
|
|
}
|
|
|
|
var elementList = [];
|
|
$("#wmd-preview > h1," +
|
|
"#wmd-preview > h2," +
|
|
"#wmd-preview > h3," +
|
|
"#wmd-preview > h4," +
|
|
"#wmd-preview > h5," +
|
|
"#wmd-preview > h6").each(function() {
|
|
elementList.push(new TocElement(
|
|
$(this).prop("tagName"),
|
|
createAnchor($(this)),
|
|
$(this).text()
|
|
));
|
|
});
|
|
elementList = groupTags(elementList);
|
|
return '<div class="toc"><ul>' + elementList.toString() + '</ul></div>';
|
|
}
|
|
|
|
toc.onEditorConfigure = function(editor) {
|
|
// Run TOC generation when conversion is finished directly on HTML
|
|
editor.hooks.chain("onPreviewRefresh", function() {
|
|
var toc = buildToc();
|
|
var html = $("#wmd-preview").html();
|
|
html = html.replace(/<p>\[TOC\]<\/p>/g, toc);
|
|
$("#wmd-preview").html(html);
|
|
});
|
|
};
|
|
|
|
return toc;
|
|
});
|
|
|