unobstrusive JS for TOC, better onload handling

This path adds more unobstrusive JavaScript for the TOC handling. It also
loads JavaScript initialiezers as soon as the DOM is parsed for Mozilla-based
Browsers as described at http://dean.edwards.name/weblog/2005/09/busted/ - a
IE solution was not chosen yet.

darcs-hash:20051210193709-7ad00-771461e56d9661caf9ca733a6d617f009e24d0b7.gz

1 files changed, 43 insertions, 22 deletions

diff --git a/lib/scripts/script.js b/lib/scripts/script.js
index b91859265..d589aa0b4 100644
--- a/lib/scripts/script.js
+++ b/lib/scripts/script.js
@@ -98,6 +98,19 @@ function escapeQuotes(text) {
 }
 
 /**
+ * Adds a node as the first childenode to the given parent
+ *
+ * @see appendChild()
+ */
+function prependChild(parent,element) {
+	if(!parent.firstChild){
+		parent.appendChild(element);
+	}else{
+		parent.insertBefore(element,parent.firstChild);
+	}
+}
+
+/**
  * Prints a animated gif to show the search is performed
  *
  * @author Andreas Gohr <andi@splitbrain.org>
@@ -143,37 +156,45 @@ function suggestWikiname(){
 }
 
 /**
- * This prints the switch to toggle the Table of Contents
+ * Adds the toggle switch to the TOC
  */
-function showTocToggle(showtxt,hidetxt) {
-  if(document.getElementById) {
-		show = '<img src="'+DOKU_BASE+'lib/images/arrow_down.gif" alt="'+showtxt+'">';
-		hide = '<img src="'+DOKU_BASE+'lib/images/arrow_up.gif" alt="'+hidetxt+'">';
-
-    document.writeln('<div class=\'toctoggle\'><a href="javascript:toggleToc()" class="toc">' +
-    '<span id="showlink" style="display:none;">' + show + '</span>' +
-    '<span id="hidelink">' + hide + '</span>' +
-    '</a></div>');
-  }
+function addTocToggle() {
+	if(!document.getElementById) return;
+	var header = document.getElementById('toc__header');
+  if(!header) return;
+
+  var showimg     = document.createElement('img');
+	showimg.id      = 'toc__show';
+  showimg.src     = DOKU_BASE+'lib/images/arrow_down.gif';
+  showimg.alt     = '+';
+	showimg.onclick = toggleToc;
+  showimg.style.display = 'none';
+
+	var hideimg     = document.createElement('img');
+	hideimg.id      = 'toc__hide';
+  hideimg.src     = DOKU_BASE+'lib/images/arrow_up.gif';
+  hideimg.alt     = '-';
+	hideimg.onclick = toggleToc;
+	
+  prependChild(header,showimg);
+  prependChild(header,hideimg);
 }
 
 /**
  * This toggles the visibility of the Table of Contents
  */
 function toggleToc() {
-  var toc = document.getElementById('tocinside');
-  var showlink=document.getElementById('showlink');
-  var hidelink=document.getElementById('hidelink');
+  var toc = document.getElementById('toc__inside');
+  var showimg = document.getElementById('toc__show');
+  var hideimg = document.getElementById('toc__hide');
   if(toc.style.display == 'none') {
-    toc.style.display = tocWas;
-    hidelink.style.display='';
-    showlink.style.display='none';
+    toc.style.display      = '';
+    hideimg.style.display = '';
+    showimg.style.display = 'none';
   } else {
-    tocWas = toc.style.display;
-    toc.style.display = 'none';
-    hidelink.style.display='none';
-    showlink.style.display='';
-
+    toc.style.display      = 'none';
+    hideimg.style.display = 'none';
+    showimg.style.display = '';
   }
 }