tiny Dreamwidth signal boost bookmarklet

signal_boost.js

var postURL = "https://www.dreamwidth.org/update.bml?event=";
var curURL = window.location.href;

// get the currently selected text (no longer used in boost)
function getSelectionText() {
    var text = "";
    if (window.getSelection) {
        text = window.getSelection().toString();
    } else if (document.selection && document.selection.type != "Control") {
        text = document.selection.createRange().text;
    }
    return text;
}

// updated, get currently selected html
function getSelectionHtml() {
    var html = "";
    if (typeof window.getSelection != "undefined") {
        var sel = window.getSelection();
        if (sel.rangeCount) {
            var container = document.createElement("div");
            for (var i = 0, len = sel.rangeCount; i < len; ++i) {
                container.appendChild(sel.getRangeAt(i).cloneContents());
            }
            html = container.innerHTML;
        }
    } else if (typeof document.selection != "undefined") {
        if (document.selection.type == "Text") {
            html = document.selection.createRange().htmlText;
        }
    }
    return html;
}

// check if it's locked
function isLocked() {
	return document.getElementsByClassName("access-filter").length > 0;
}

function confirmBoost() {
	var doPost = !isLocked();
	if (!doPost) {
		doPost = confirm("Post is access-locked. Continue?");
	}
	return doPost;
}

// set up the post
function boost() {
	var selectedText = getSelectionHtml();

	// name of user who posted 
	var curName = curURL.substr(0, curURL.indexOf('.'));
	curName = curName.substr(curName.lastIndexOf('/')+1);

	// title of current post
	var curTitle = document.title;
	curTitle = curTitle.substr(curTitle.lastIndexOf(' | ')+3);

	// build up the content of signal boost optionally using selected text as an excerpt
	var linkText = "<p>"; 
	linkText = linkText + '<user name="' + curName + '"> posted: ';
	linkText = linkText + '<strong><a href="' + curURL + '">' + curTitle + '</a></strong>';
	linkText = linkText ;
	if (selectedText.length > 0) {
	  linkText = linkText + "\n<blockquote> " + selectedText + "</blockquote>";
	}
	linkText = linkText + "</p>";

	var subjectText = "Signal Boost: " + curTitle;

	postURL = postURL + encodeURIComponent(linkText) + "&subject=" + encodeURIComponent(subjectText);

	window.location = postURL;
}

if (confirmBoost()) {
	boost();
}

Hi! You more muck-around-able code motivated me to make three more changes that had been bugging me:

1. I changed the method of checking for a locked post for one that seemed to be working for a few people that had problems (possibly custom-site-style-related?) with my first version.
2. I made it fail more gracefully with non-DW posts.
3. I put in a check to prevent space-time vortices.

Since you put in a github link I decided to actually attempt to learn to use my dusty github account! I hope I did it right, it looks like there's no way to do a pull request for a gist but here is my fork (I think): https://gist.github.com/melannen/ac7d03e0255fdfa6086dae63db705dfe

(something seems to have happened to the indents while I was copy-pasting back and forth that confused the version control, sorry. :/ )

Thank you for the fix to the html-stripping! I wouldn't have known where to start on that one.