1 var TOC_CLASS_ACTIVE = "on3";

     2 var TOC_CLASS_COLLAPSED = "toc-controller-closed";

     3 var TOC_CLASS_EXPANDED = "toc-controller-open";

     4 var TOC_CLASS_CONTROL = "toc-controller";

     5 var TOC_CLASS_SPACE = "toc-space";

     6 var TOC_DISPLAY_COLLAPSED = "none";

     7 var TOC_DISPLAY_EXPANDED = "block";

     8 

     9 /**

    10  * Check required support for TOC.

    11  */

    12 function support() {

    13 	if (document.getElementsByTagName && document.styleSheets) {

    14 		tocSupported = true;

    15 	} else {

    16 		//alert("Dynamic TOC not available.");		

    17 	}

    18 }

    19 

    20 /** Flag if dynamic TOC is supported */

    21 var tocSupported = false;

    22 support();

    23 /** Current active TOC node. */

    24 var currentHighlight = null;

    25 /** Process start time stamp. */

    26 var processStart;

    27 /** Process end time stamp. */

    28 var processEnd;

    29 /** Last process duration. */

    30 var processDuration

    31 

    32 

    33 /**

    34  * Hightlight TOC node.

    35  *

    36  * @param node TOC node to highlight

    37  */

    38 function highlightTocItem(node) {

    39 	if (tocSupported) {

    40 		// turn old off

    41 		if (currentHighlight === null || !isClass(currentHighlight, TOC_CLASS_ACTIVE)) {

    42 			// turn all off

    43 			var li = getFirstElementByClassName(node.ownerDocument, TOC_CLASS_ACTIVE, TOC_ITEM);

    44 			if (li !== null) {

    45 			  removeClass(li, TOC_CLASS_ACTIVE);

    46 			}

    47 		} else {

    48 			removeClass(currentHighlight, TOC_CLASS_ACTIVE);

    49 		}

    50 		// turn this on

    51 		addClass(node.parentNode, TOC_CLASS_ACTIVE);

    52 		currentHighlight = node.parentNode;

    53 	}

    54 }

    55 

    56 /**

    57  * Toggle child node display.

    58  *

    59  * @param n Target node of the event.

    60  */

    61 function toggle(n) {

    62 	if (isClass(n, TOC_CLASS_EXPANDED)) {

    63 		tocNodeCollapse(n);

    64 	} else {

    65 	  tocNodeExpand(n);

    66 	}

    67 }

    68 

    69 /**

    70  * Expand TOC node.

    71  *

    72  * @param n TOC node

    73  */

    74 function tocNodeExpand(n, collapseOverride) {

    75   if (collapseOverride === undefined) {

    76     collapseOverride = true;

    77   }

    78   n.firstChild.data = TOC_SYMBOL_EXPANDED;

    79   switchClass(n, TOC_CLASS_EXPANDED, TOC_CLASS_COLLAPSED);

    80   var ul = getNextSiblingByTagName(n.nextSibling, TOC_ELEMENT_BLOCK);

    81   if (ul !== null) {

    82     if (childCollapse && collapseOverride) {

    83       var li = getChildElementsByTagName(ul, "li");

    84       for (var i = 0; i < li.length; i++) {

    85         collapseChildBlocks(li[i]);

    86       }

    87     }

    88     ul.style.display = TOC_DISPLAY_EXPANDED;

    89     //switchClass(ul, "toc-expanded", "toc-collapsed");

    90   }

    91 }

    92 

    93 /**

    94  * Collapse TOC node.

    95  *

    96  * @param n TOC node

    97  */

    98 function tocNodeCollapse(n) {

    99   n.firstChild.data = TOC_SYMBOL_COLLAPSED;

   100   switchClass(n, TOC_CLASS_COLLAPSED, TOC_CLASS_EXPANDED);

   101   var ul = getNextSiblingByTagName(n.nextSibling, TOC_ELEMENT_BLOCK);

   102   if (ul !== null) {

   103     ul.style.display = TOC_DISPLAY_COLLAPSED;

   104     //switchClass(ul, "toc-collapsed", "toc-expanded");

   105   }

   106 }

   107 

   108 /**

   109  * Signal start of processing.

   110  *

   111  * @param message Message description of the process start

   112  */

   113 function startProcess(message) {

   114     processStart = new Date();

   115     window.status = (message === undefined ? "" : message);    

   116 }

   117 

   118 /**

   119  * Signal end of processing.

   120  *

   121  * @param message Message description of the process result

   122  */

   123 function endProcess(message) {

   124     processEnd = new Date();

   125     window.status = (message === undefined ? "" : message);

   126     processDuration = processEnd - processStart;

   127 }

   128