Blob Blame History Raw
function addWikiFormattingToolbar(textarea) {
if ((typeof(document["selection"]) == "undefined")
&& (typeof(textarea["setSelectionRange"]) == "undefined")) {
return;
}
var toolbar = document.createElement("div");
toolbar.className = "wikitoolbar";
function addButton(id, title, fn) {
var a = document.createElement("a");
a.href = "#";
a.id = id;
a.title = title;
a.onclick = function() { try { fn() } catch (e) { } return false };
a.tabIndex = 400;
toolbar.appendChild(a);
}
function encloseSelection(prefix, suffix) {
textarea.focus();
var start, end, sel, scrollPos, subst;
if (typeof(document["selection"]) != "undefined") {
sel = document.selection.createRange().text;
} else if (typeof(textarea["setSelectionRange"]) != "undefined") {
start = textarea.selectionStart;
end = textarea.selectionEnd;
scrollPos = textarea.scrollTop;
sel = textarea.value.substring(start, end);
}
if (sel.match(/ $/)) { // exclude ending space char, if any
sel = sel.substring(0, sel.length - 1);
suffix = suffix + " ";
}
subst = prefix + sel + suffix;
if (typeof(document["selection"]) != "undefined") {
var range = document.selection.createRange().text = subst;
textarea.caretPos -= suffix.length;
} else if (typeof(textarea["setSelectionRange"]) != "undefined") {
textarea.value = textarea.value.substring(0, start) + subst +
textarea.value.substring(end);
if (sel) {
textarea.setSelectionRange(start + subst.length, start + subst.length);
} else {
textarea.setSelectionRange(start + prefix.length, start + prefix.length);
}
textarea.scrollTop = scrollPos;
}
}
addButton("strong", "Bold text: '''Example'''", function() {
encloseSelection("'''", "'''");
});
addButton("em", "Italic text: ''Example''", function() {
encloseSelection("''", "''");
});
addButton("heading", "Heading: == Example ==", function() {
encloseSelection("\n== ", " ==\n", "Heading");
});
addButton("link", "Link: [http://www.example.com/ Example]", function() {
encloseSelection("[", "]");
});
addButton("code", "Code block: {{{ example }}}", function() {
encloseSelection("\n{{{\n", "\n}}}\n");
});
addButton("hr", "Horizontal rule: ----", function() {
encloseSelection("\n----\n", "");
});
addButton("np", "New paragraph", function() {
encloseSelection("\n\n", "");
});
addButton("br", "Line break: [[BR]]", function() {
encloseSelection("[[BR]]\n", "");
});
textarea.parentNode.insertBefore(toolbar, textarea);
}
// Add the toolbar to all <textarea> elements on the page with the class
// 'wikitext'.
var re = /\bwikitext\b/;
var textareas = document.getElementsByTagName("textarea");
for (var i = 0; i < textareas.length; i++) {
var textarea = textareas[i];
if (textarea.className && re.test(textarea.className)) {
addWikiFormattingToolbar(textarea);
}
}