sazze/node-pm

/**
 * Sunlight menu plugin
 *
 * This creates the menu in the upper right corner for block-level elements.
 * This plugin is not supported for IE6.
 *
 * Options:
 *     - showMenu: true/false (default is false)
 *     - autoCollapse: true/false (default is false)
 */
(function(sunlight, document, undefined){
    if (sunlight === undefined) {
        throw "Include sunlight.js before including plugin files";
    }
    
    //http://dean.edwards.name/weblog/2007/03/sniff/#comment83695
    //eval()'d so that it compresses correctly
    var ieVersion = eval("0 /*@cc_on+ScriptEngineMajorVersion()@*/");
    
    function createLink(href, title, text) {
        var link = document.createElement("a");
        link.setAttribute("href", href);
        link.setAttribute("title", title);
        if (text) {
            link.appendChild(document.createTextNode(text));
        }
        return link;
    }
    
    function getTextRecursive(node) {
        var text = "",
            i = 0;
        
        if (node.nodeType === 3) {
            return node.nodeValue;
        }
        
        text = "";
        for (i = 0; i < node.childNodes.length; i++) {
            text += getTextRecursive(node.childNodes[i]);
        }
        
        return text;
    }
    
    sunlight.bind("afterHighlightNode", function(context) {
        var menu,
            sunlightIcon,
            ul,
            collapse,
            mDash,
            collapseLink,
            viewRaw,
            viewRawLink,
            about,
            aboutLink,
            icon;
        
        if ((ieVersion && ieVersion < 7) || !this.options.showMenu || sunlight.util.getComputedStyle(context.node, "display") !== "block") {
            return;
        }
        
        menu = document.createElement("div");
        menu.className = this.options.classPrefix + "menu";
        
        sunlightIcon = 
            "iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAJ" +
            "cEhZcwAADsMAAA7DAcdvqGQAAAAZdEVYdFNvZnR3YXJlAFBhaW50Lk5FVCB2My41Ljg3O4BdAAAAl0lEQVQ4jWP4" +
            "P9n9PyWYgTYGzAr+///Q9P//Ty/HjhfEETDg1oH/YPDgNKbm4wsIuGBO+H84WJJKhhd2dkA0v3tEZhjcPQox4MVN" +
            "7P7fUEHAgM112DX++Qkx+PEFMqPxwSmIAQenkWHAvCicAUucAbCAfX2PQCCCEtDGKkz86RXEgL39BAwAKcAFbh/6" +
            "/39GIL3yAj0NAAB+LQeDCZ9tvgAAAABJRU5ErkJggg==";
        
        ul = document.createElement("ul");
        
        collapse = document.createElement("li");
        mDash = String.fromCharCode(0x2014);
        collapseLink = createLink("#", "collapse code block", mDash);
        
        collapseLink.onclick = function() {
            var originalHeight = sunlight.util.getComputedStyle(context.codeContainer, "height"),
                originalOverflow = sunlight.util.getComputedStyle(context.codeContainer, "overflowY");
            
            return function() {
                var needsToExpand = sunlight.util.getComputedStyle(context.codeContainer, "height") !== originalHeight;
                
                this.replaceChild(document.createTextNode(needsToExpand ? mDash : "+"), this.firstChild);
                this.setAttribute("title", (needsToExpand ? "collapse" : "expand") + " clode block");
                context.codeContainer.style.height = needsToExpand ? originalHeight : "0px";
                context.codeContainer.style.overflowY = needsToExpand ? originalOverflow : "hidden";
                
                return false;
            }
        }();
        
        collapse.appendChild(collapseLink);
        
        viewRaw = document.createElement("li");
        viewRawLink = createLink("#", "view raw code", "raw");
        viewRawLink.onclick = function() {
            var textarea;
            return function() {
                var rawCode;
                
                if (textarea) {
                    textarea.parentNode.removeChild(textarea);
                    textarea = null;
                    context.node.style.display = "block";
                    this.replaceChild(document.createTextNode("raw"), this.firstChild);
                    this.setAttribute("title", "view raw code");
                } else {
                    //hide the codeContainer, flatten all text nodes, create a <textarea>, append it
                    rawCode = getTextRecursive(context.node);
                    textarea = document.createElement("textarea");
                    textarea.value = rawCode;
                    textarea.setAttribute("readonly", "readonly");
                    textarea.style.width = (parseInt(sunlight.util.getComputedStyle(context.node, "width")) - 5) + "px"; //IE, Safari and Chrome can't handle the actual width
                    textarea.style.height = sunlight.util.getComputedStyle(context.node, "height");
                    textarea.style.border = "none";
                    textarea.style.overflowX = "hidden"; //IE requires this
                    textarea.setAttribute("wrap", "off"); //prevent line wrapping lol
                    context.codeContainer.insertBefore(textarea, context.node);
                    context.node.style.display = "none";
                    
                    this.replaceChild(document.createTextNode("highlighted"), this.firstChild);
                    this.setAttribute("title", "view highlighted code");
                    textarea.select(); //highlight everything
                }
                
                return false;
            }
        }();
        
        viewRaw.appendChild(viewRawLink);
        
        about = document.createElement("li");
        aboutLink = createLink("http://sunlightjs.com/", "Sunlight: JavaScript syntax highlighter by Tommy Montgomery");
        
        icon = document.createElement("img");
        icon.setAttribute("src", "data:image/png;base64," + sunlightIcon);
        icon.setAttribute("alt", "about");
        aboutLink.appendChild(icon);
        about.appendChild(aboutLink);
        
        ul.appendChild(about);
        ul.appendChild(viewRaw);
        ul.appendChild(collapse);
        
        menu.appendChild(ul);
        context.container.insertBefore(menu, context.container.firstChild);
        
        if (this.options.autoCollapse) {
            collapseLink.onclick.call(collapseLink);
        }
    });
    
    sunlight.globalOptions.showMenu = false;
    sunlight.globalOptions.autoCollapse = false;
    
}(this["Sunlight"], document));