adamstark@114: /*
adamstark@114:  @licstart  The following is the entire license notice for the JavaScript code in this file.
adamstark@60: 
adamstark@114:  The MIT License (MIT)
adamstark@60: 
adamstark@114:  Copyright (C) 1997-2020 by Dimitri van Heesch
adamstark@60: 
adamstark@114:  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
adamstark@114:  and associated documentation files (the "Software"), to deal in the Software without restriction,
adamstark@114:  including without limitation the rights to use, copy, modify, merge, publish, distribute,
adamstark@114:  sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
adamstark@114:  furnished to do so, subject to the following conditions:
adamstark@60: 
adamstark@114:  The above copyright notice and this permission notice shall be included in all copies or
adamstark@114:  substantial portions of the Software.
adamstark@114: 
adamstark@114:  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
adamstark@114:  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
adamstark@114:  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
adamstark@114:  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
adamstark@114:  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
adamstark@114: 
adamstark@114:  @licend  The above is the entire license notice for the JavaScript code in this file
adamstark@114:  */
adamstark@60: function convertToId(search)
adamstark@60: {
adamstark@60:   var result = '';
adamstark@60:   for (i=0;i<search.length;i++)
adamstark@60:   {
adamstark@60:     var c = search.charAt(i);
adamstark@60:     var cn = c.charCodeAt(0);
adamstark@114:     if (c.match(/[a-z0-9\u0080-\uFFFF]/))
adamstark@60:     {
adamstark@60:       result+=c;
adamstark@60:     }
adamstark@114:     else if (cn<16)
adamstark@60:     {
adamstark@60:       result+="_0"+cn.toString(16);
adamstark@60:     }
adamstark@114:     else
adamstark@60:     {
adamstark@60:       result+="_"+cn.toString(16);
adamstark@60:     }
adamstark@60:   }
adamstark@60:   return result;
adamstark@60: }
adamstark@60: 
adamstark@60: function getXPos(item)
adamstark@60: {
adamstark@60:   var x = 0;
adamstark@60:   if (item.offsetWidth)
adamstark@60:   {
adamstark@60:     while (item && item!=document.body)
adamstark@60:     {
adamstark@60:       x   += item.offsetLeft;
adamstark@60:       item = item.offsetParent;
adamstark@60:     }
adamstark@60:   }
adamstark@60:   return x;
adamstark@60: }
adamstark@60: 
adamstark@60: function getYPos(item)
adamstark@60: {
adamstark@60:   var y = 0;
adamstark@60:   if (item.offsetWidth)
adamstark@60:   {
adamstark@60:      while (item && item!=document.body)
adamstark@60:      {
adamstark@60:        y   += item.offsetTop;
adamstark@60:        item = item.offsetParent;
adamstark@60:      }
adamstark@60:   }
adamstark@60:   return y;
adamstark@60: }
adamstark@60: 
adamstark@114: var searchResults = new SearchResults("searchResults");
adamstark@114: 
adamstark@60: /* A class handling everything associated with the search panel.
adamstark@60: 
adamstark@60:    Parameters:
adamstark@114:    name - The name of the global variable that will be
adamstark@60:           storing this instance.  Is needed to be able to set timeouts.
adamstark@60:    resultPath - path to use for external files
adamstark@60: */
adamstark@114: function SearchBox(name, resultsPath, extension)
adamstark@60: {
adamstark@60:   if (!name || !resultsPath) {  alert("Missing parameters to SearchBox."); }
adamstark@114:   if (!extension || extension == "") { extension = ".html"; }
adamstark@114: 
adamstark@60:   // ---------- Instance variables
adamstark@60:   this.name                  = name;
adamstark@60:   this.resultsPath           = resultsPath;
adamstark@60:   this.keyTimeout            = 0;
adamstark@60:   this.keyTimeoutLength      = 500;
adamstark@60:   this.closeSelectionTimeout = 300;
adamstark@60:   this.lastSearchValue       = "";
adamstark@60:   this.lastResultsPage       = "";
adamstark@60:   this.hideTimeout           = 0;
adamstark@60:   this.searchIndex           = 0;
adamstark@60:   this.searchActive          = false;
adamstark@114:   this.extension             = extension;
adamstark@60: 
adamstark@60:   // ----------- DOM Elements
adamstark@60: 
adamstark@60:   this.DOMSearchField = function()
adamstark@60:   {  return document.getElementById("MSearchField");  }
adamstark@60: 
adamstark@60:   this.DOMSearchSelect = function()
adamstark@60:   {  return document.getElementById("MSearchSelect");  }
adamstark@60: 
adamstark@60:   this.DOMSearchSelectWindow = function()
adamstark@60:   {  return document.getElementById("MSearchSelectWindow");  }
adamstark@60: 
adamstark@60:   this.DOMPopupSearchResults = function()
adamstark@60:   {  return document.getElementById("MSearchResults");  }
adamstark@60: 
adamstark@60:   this.DOMPopupSearchResultsWindow = function()
adamstark@60:   {  return document.getElementById("MSearchResultsWindow");  }
adamstark@60: 
adamstark@60:   this.DOMSearchClose = function()
adamstark@60:   {  return document.getElementById("MSearchClose"); }
adamstark@60: 
adamstark@60:   this.DOMSearchBox = function()
adamstark@60:   {  return document.getElementById("MSearchBox");  }
adamstark@60: 
adamstark@60:   // ------------ Event Handlers
adamstark@60: 
adamstark@60:   // Called when focus is added or removed from the search field.
adamstark@60:   this.OnSearchFieldFocus = function(isActive)
adamstark@60:   {
adamstark@60:     this.Activate(isActive);
adamstark@60:   }
adamstark@60: 
adamstark@60:   this.OnSearchSelectShow = function()
adamstark@60:   {
adamstark@60:     var searchSelectWindow = this.DOMSearchSelectWindow();
adamstark@60:     var searchField        = this.DOMSearchSelect();
adamstark@60: 
adamstark@114:     var left = getXPos(searchField);
adamstark@114:     var top  = getYPos(searchField);
adamstark@114:     top += searchField.offsetHeight;
adamstark@60: 
adamstark@114:     // show search selection popup
adamstark@114:     searchSelectWindow.style.display='block';
adamstark@114:     searchSelectWindow.style.left =  left + 'px';
adamstark@114:     searchSelectWindow.style.top  =  top  + 'px';
adamstark@60: 
adamstark@60:     // stop selection hide timer
adamstark@114:     if (this.hideTimeout)
adamstark@60:     {
adamstark@60:       clearTimeout(this.hideTimeout);
adamstark@60:       this.hideTimeout=0;
adamstark@60:     }
adamstark@60:     return false; // to avoid "image drag" default event
adamstark@60:   }
adamstark@60: 
adamstark@60:   this.OnSearchSelectHide = function()
adamstark@60:   {
adamstark@114:     this.hideTimeout = setTimeout(this.CloseSelectionWindow.bind(this),
adamstark@60:                                   this.closeSelectionTimeout);
adamstark@60:   }
adamstark@60: 
adamstark@60:   // Called when the content of the search field is changed.
adamstark@60:   this.OnSearchFieldChange = function(evt)
adamstark@60:   {
adamstark@60:     if (this.keyTimeout) // kill running timer
adamstark@60:     {
adamstark@60:       clearTimeout(this.keyTimeout);
adamstark@60:       this.keyTimeout = 0;
adamstark@60:     }
adamstark@60: 
adamstark@60:     var e  = (evt) ? evt : window.event; // for IE
adamstark@60:     if (e.keyCode==40 || e.keyCode==13)
adamstark@60:     {
adamstark@60:       if (e.shiftKey==1)
adamstark@60:       {
adamstark@60:         this.OnSearchSelectShow();
adamstark@114:         var win=this.DOMSearchSelectWindow();
adamstark@60:         for (i=0;i<win.childNodes.length;i++)
adamstark@60:         {
adamstark@60:           var child = win.childNodes[i]; // get span within a
adamstark@60:           if (child.className=='SelectItem')
adamstark@60:           {
adamstark@60:             child.focus();
adamstark@60:             return;
adamstark@60:           }
adamstark@60:         }
adamstark@60:         return;
adamstark@60:       }
adamstark@114:       else
adamstark@60:       {
adamstark@114:         var elem = searchResults.NavNext(0);
adamstark@60:         if (elem) elem.focus();
adamstark@60:       }
adamstark@60:     }
adamstark@60:     else if (e.keyCode==27) // Escape out of the search field
adamstark@60:     {
adamstark@60:       this.DOMSearchField().blur();
adamstark@60:       this.DOMPopupSearchResultsWindow().style.display = 'none';
adamstark@60:       this.DOMSearchClose().style.display = 'none';
adamstark@60:       this.lastSearchValue = '';
adamstark@60:       this.Activate(false);
adamstark@60:       return;
adamstark@60:     }
adamstark@60: 
adamstark@60:     // strip whitespaces
adamstark@60:     var searchValue = this.DOMSearchField().value.replace(/ +/g, "");
adamstark@60: 
adamstark@60:     if (searchValue != this.lastSearchValue) // search value has changed
adamstark@60:     {
adamstark@60:       if (searchValue != "") // non-empty search
adamstark@60:       {
adamstark@60:         // set timer for search update
adamstark@114:         this.keyTimeout = setTimeout(this.Search.bind(this),
adamstark@60:                                      this.keyTimeoutLength);
adamstark@60:       }
adamstark@60:       else // empty search field
adamstark@60:       {
adamstark@60:         this.DOMPopupSearchResultsWindow().style.display = 'none';
adamstark@60:         this.DOMSearchClose().style.display = 'none';
adamstark@60:         this.lastSearchValue = '';
adamstark@60:       }
adamstark@60:     }
adamstark@60:   }
adamstark@60: 
adamstark@60:   this.SelectItemCount = function(id)
adamstark@60:   {
adamstark@60:     var count=0;
adamstark@114:     var win=this.DOMSearchSelectWindow();
adamstark@60:     for (i=0;i<win.childNodes.length;i++)
adamstark@60:     {
adamstark@60:       var child = win.childNodes[i]; // get span within a
adamstark@60:       if (child.className=='SelectItem')
adamstark@60:       {
adamstark@60:         count++;
adamstark@60:       }
adamstark@60:     }
adamstark@60:     return count;
adamstark@60:   }
adamstark@60: 
adamstark@60:   this.SelectItemSet = function(id)
adamstark@60:   {
adamstark@60:     var i,j=0;
adamstark@114:     var win=this.DOMSearchSelectWindow();
adamstark@60:     for (i=0;i<win.childNodes.length;i++)
adamstark@60:     {
adamstark@60:       var child = win.childNodes[i]; // get span within a
adamstark@60:       if (child.className=='SelectItem')
adamstark@60:       {
adamstark@60:         var node = child.firstChild;
adamstark@60:         if (j==id)
adamstark@60:         {
adamstark@60:           node.innerHTML='&#8226;';
adamstark@60:         }
adamstark@60:         else
adamstark@60:         {
adamstark@60:           node.innerHTML='&#160;';
adamstark@60:         }
adamstark@60:         j++;
adamstark@60:       }
adamstark@60:     }
adamstark@60:   }
adamstark@60: 
adamstark@60:   // Called when an search filter selection is made.
adamstark@60:   // set item with index id as the active item
adamstark@60:   this.OnSelectItem = function(id)
adamstark@60:   {
adamstark@60:     this.searchIndex = id;
adamstark@60:     this.SelectItemSet(id);
adamstark@60:     var searchValue = this.DOMSearchField().value.replace(/ +/g, "");
adamstark@60:     if (searchValue!="" && this.searchActive) // something was found -> do a search
adamstark@60:     {
adamstark@60:       this.Search();
adamstark@60:     }
adamstark@60:   }
adamstark@60: 
adamstark@60:   this.OnSearchSelectKey = function(evt)
adamstark@60:   {
adamstark@60:     var e = (evt) ? evt : window.event; // for IE
adamstark@60:     if (e.keyCode==40 && this.searchIndex<this.SelectItemCount()) // Down
adamstark@60:     {
adamstark@60:       this.searchIndex++;
adamstark@60:       this.OnSelectItem(this.searchIndex);
adamstark@60:     }
adamstark@60:     else if (e.keyCode==38 && this.searchIndex>0) // Up
adamstark@60:     {
adamstark@60:       this.searchIndex--;
adamstark@60:       this.OnSelectItem(this.searchIndex);
adamstark@60:     }
adamstark@60:     else if (e.keyCode==13 || e.keyCode==27)
adamstark@60:     {
adamstark@60:       this.OnSelectItem(this.searchIndex);
adamstark@60:       this.CloseSelectionWindow();
adamstark@60:       this.DOMSearchField().focus();
adamstark@60:     }
adamstark@60:     return false;
adamstark@60:   }
adamstark@60: 
adamstark@60:   // --------- Actions
adamstark@60: 
adamstark@60:   // Closes the results window.
adamstark@60:   this.CloseResultsWindow = function()
adamstark@60:   {
adamstark@60:     this.DOMPopupSearchResultsWindow().style.display = 'none';
adamstark@60:     this.DOMSearchClose().style.display = 'none';
adamstark@60:     this.Activate(false);
adamstark@60:   }
adamstark@60: 
adamstark@60:   this.CloseSelectionWindow = function()
adamstark@60:   {
adamstark@60:     this.DOMSearchSelectWindow().style.display = 'none';
adamstark@60:   }
adamstark@60: 
adamstark@60:   // Performs a search.
adamstark@60:   this.Search = function()
adamstark@60:   {
adamstark@60:     this.keyTimeout = 0;
adamstark@60: 
adamstark@60:     // strip leading whitespace
adamstark@60:     var searchValue = this.DOMSearchField().value.replace(/^ +/, "");
adamstark@60: 
adamstark@60:     var code = searchValue.toLowerCase().charCodeAt(0);
adamstark@114:     var idxChar = searchValue.substr(0, 1).toLowerCase();
adamstark@114:     if ( 0xD800 <= code && code <= 0xDBFF && searchValue > 1) // surrogate pair
adamstark@60:     {
adamstark@114:       idxChar = searchValue.substr(0, 2);
adamstark@60:     }
adamstark@60: 
adamstark@114:     var jsFile;
adamstark@60: 
adamstark@114:     var idx = indexSectionsWithContent[this.searchIndex].indexOf(idxChar);
adamstark@114:     if (idx!=-1)
adamstark@60:     {
adamstark@114:        var hexCode=idx.toString(16);
adamstark@114:        jsFile = this.resultsPath + indexSectionNames[this.searchIndex] + '_' + hexCode + '.js';
adamstark@60:     }
adamstark@60: 
adamstark@114:     var loadJS = function(url, impl, loc){
adamstark@114:       var scriptTag = document.createElement('script');
adamstark@114:       scriptTag.src = url;
adamstark@114:       scriptTag.onload = impl;
adamstark@114:       scriptTag.onreadystatechange = impl;
adamstark@114:       loc.appendChild(scriptTag);
adamstark@114:     }
adamstark@114: 
adamstark@60:     var domPopupSearchResultsWindow = this.DOMPopupSearchResultsWindow();
adamstark@114:     var domSearchBox = this.DOMSearchBox();
adamstark@114:     var domPopupSearchResults = this.DOMPopupSearchResults();
adamstark@114:     var domSearchClose = this.DOMSearchClose();
adamstark@114:     var resultsPath = this.resultsPath;
adamstark@60: 
adamstark@114:     var handleResults = function() {
adamstark@114:       document.getElementById("Loading").style.display="none";
adamstark@114:       if (typeof searchData !== 'undefined') {
adamstark@114:         createResults(resultsPath);
adamstark@114:         document.getElementById("NoMatches").style.display="none";
adamstark@114:       }
adamstark@114:  
adamstark@114:       if (idx!=-1) {
adamstark@114:         searchResults.Search(searchValue);
adamstark@114:       } else { // no file with search results => force empty search results
adamstark@114:         searchResults.Search('====');
adamstark@114:       }
adamstark@114: 
adamstark@114:       if (domPopupSearchResultsWindow.style.display!='block')
adamstark@114:       {
adamstark@114:         domSearchClose.style.display = 'inline-block';
adamstark@114:         var left = getXPos(domSearchBox) + 150;
adamstark@114:         var top  = getYPos(domSearchBox) + 20;
adamstark@114:         domPopupSearchResultsWindow.style.display = 'block';
adamstark@114:         left -= domPopupSearchResults.offsetWidth;
adamstark@114:         var maxWidth  = document.body.clientWidth;
adamstark@114:         var maxHeight = document.body.clientHeight;
adamstark@114:         var width = 300;
adamstark@114:         if (left<10) left=10;
adamstark@114:         if (width+left+8>maxWidth) width=maxWidth-left-8;
adamstark@114:         var height = 400;
adamstark@114:         if (height+top+8>maxHeight) height=maxHeight-top-8;
adamstark@114:         domPopupSearchResultsWindow.style.top     = top  + 'px';
adamstark@114:         domPopupSearchResultsWindow.style.left    = left + 'px';
adamstark@114:         domPopupSearchResultsWindow.style.width   = width + 'px';
adamstark@114:         domPopupSearchResultsWindow.style.height  = height + 'px';
adamstark@114:       }
adamstark@114:     }
adamstark@114: 
adamstark@114:     if (jsFile) {
adamstark@114:       loadJS(jsFile, handleResults, this.DOMPopupSearchResultsWindow());
adamstark@114:     } else {
adamstark@114:       handleResults();
adamstark@60:     }
adamstark@60: 
adamstark@60:     this.lastSearchValue = searchValue;
adamstark@60:   }
adamstark@60: 
adamstark@60:   // -------- Activation Functions
adamstark@60: 
adamstark@114:   // Activates or deactivates the search panel, resetting things to
adamstark@114:   // their default values if necessary.
adamstark@60:   this.Activate = function(isActive)
adamstark@60:   {
adamstark@60:     if (isActive || // open it
adamstark@114:         this.DOMPopupSearchResultsWindow().style.display == 'block'
adamstark@60:        )
adamstark@60:     {
adamstark@60:       this.DOMSearchBox().className = 'MSearchBoxActive';
adamstark@114:       this.searchActive = true;
adamstark@60:     }
adamstark@60:     else if (!isActive) // directly remove the panel
adamstark@60:     {
adamstark@60:       this.DOMSearchBox().className = 'MSearchBoxInactive';
adamstark@60:       this.searchActive             = false;
adamstark@60:       this.lastSearchValue          = ''
adamstark@60:       this.lastResultsPage          = '';
adamstark@114:       this.DOMSearchField().value   = '';
adamstark@60:     }
adamstark@60:   }
adamstark@60: }
adamstark@60: 
adamstark@60: // -----------------------------------------------------------------------
adamstark@60: 
adamstark@60: // The class that handles everything on the search results page.
adamstark@60: function SearchResults(name)
adamstark@60: {
adamstark@60:     // The number of matches from the last run of <Search()>.
adamstark@60:     this.lastMatchCount = 0;
adamstark@60:     this.lastKey = 0;
adamstark@60:     this.repeatOn = false;
adamstark@60: 
adamstark@60:     // Toggles the visibility of the passed element ID.
adamstark@60:     this.FindChildElement = function(id)
adamstark@60:     {
adamstark@60:       var parentElement = document.getElementById(id);
adamstark@60:       var element = parentElement.firstChild;
adamstark@60: 
adamstark@60:       while (element && element!=parentElement)
adamstark@60:       {
adamstark@114:         if (element.nodeName.toLowerCase() == 'div' && element.className == 'SRChildren')
adamstark@60:         {
adamstark@60:           return element;
adamstark@60:         }
adamstark@60: 
adamstark@114:         if (element.nodeName.toLowerCase() == 'div' && element.hasChildNodes())
adamstark@114:         {
adamstark@114:            element = element.firstChild;
adamstark@60:         }
adamstark@60:         else if (element.nextSibling)
adamstark@114:         {
adamstark@114:            element = element.nextSibling;
adamstark@60:         }
adamstark@60:         else
adamstark@60:         {
adamstark@60:           do
adamstark@60:           {
adamstark@60:             element = element.parentNode;
adamstark@60:           }
adamstark@60:           while (element && element!=parentElement && !element.nextSibling);
adamstark@60: 
adamstark@60:           if (element && element!=parentElement)
adamstark@114:           {
adamstark@114:             element = element.nextSibling;
adamstark@60:           }
adamstark@60:         }
adamstark@60:       }
adamstark@60:     }
adamstark@60: 
adamstark@60:     this.Toggle = function(id)
adamstark@60:     {
adamstark@60:       var element = this.FindChildElement(id);
adamstark@60:       if (element)
adamstark@60:       {
adamstark@60:         if (element.style.display == 'block')
adamstark@60:         {
adamstark@60:           element.style.display = 'none';
adamstark@60:         }
adamstark@60:         else
adamstark@60:         {
adamstark@60:           element.style.display = 'block';
adamstark@60:         }
adamstark@60:       }
adamstark@60:     }
adamstark@60: 
adamstark@60:     // Searches for the passed string.  If there is no parameter,
adamstark@60:     // it takes it from the URL query.
adamstark@60:     //
adamstark@60:     // Always returns true, since other documents may try to call it
adamstark@60:     // and that may or may not be possible.
adamstark@60:     this.Search = function(search)
adamstark@60:     {
adamstark@60:       if (!search) // get search word from URL
adamstark@60:       {
adamstark@60:         search = window.location.search;
adamstark@60:         search = search.substring(1);  // Remove the leading '?'
adamstark@60:         search = unescape(search);
adamstark@60:       }
adamstark@60: 
adamstark@60:       search = search.replace(/^ +/, ""); // strip leading spaces
adamstark@60:       search = search.replace(/ +$/, ""); // strip trailing spaces
adamstark@60:       search = search.toLowerCase();
adamstark@60:       search = convertToId(search);
adamstark@60: 
adamstark@60:       var resultRows = document.getElementsByTagName("div");
adamstark@60:       var matches = 0;
adamstark@60: 
adamstark@60:       var i = 0;
adamstark@60:       while (i < resultRows.length)
adamstark@60:       {
adamstark@60:         var row = resultRows.item(i);
adamstark@60:         if (row.className == "SRResult")
adamstark@60:         {
adamstark@60:           var rowMatchName = row.id.toLowerCase();
adamstark@60:           rowMatchName = rowMatchName.replace(/^sr\d*_/, ''); // strip 'sr123_'
adamstark@60: 
adamstark@114:           if (search.length<=rowMatchName.length &&
adamstark@60:              rowMatchName.substr(0, search.length)==search)
adamstark@60:           {
adamstark@60:             row.style.display = 'block';
adamstark@60:             matches++;
adamstark@60:           }
adamstark@60:           else
adamstark@60:           {
adamstark@60:             row.style.display = 'none';
adamstark@60:           }
adamstark@60:         }
adamstark@60:         i++;
adamstark@60:       }
adamstark@60:       document.getElementById("Searching").style.display='none';
adamstark@60:       if (matches == 0) // no results
adamstark@60:       {
adamstark@60:         document.getElementById("NoMatches").style.display='block';
adamstark@60:       }
adamstark@60:       else // at least one result
adamstark@60:       {
adamstark@60:         document.getElementById("NoMatches").style.display='none';
adamstark@60:       }
adamstark@60:       this.lastMatchCount = matches;
adamstark@60:       return true;
adamstark@60:     }
adamstark@60: 
adamstark@60:     // return the first item with index index or higher that is visible
adamstark@60:     this.NavNext = function(index)
adamstark@60:     {
adamstark@60:       var focusItem;
adamstark@60:       while (1)
adamstark@60:       {
adamstark@60:         var focusName = 'Item'+index;
adamstark@60:         focusItem = document.getElementById(focusName);
adamstark@60:         if (focusItem && focusItem.parentNode.parentNode.style.display=='block')
adamstark@60:         {
adamstark@60:           break;
adamstark@60:         }
adamstark@60:         else if (!focusItem) // last element
adamstark@60:         {
adamstark@60:           break;
adamstark@60:         }
adamstark@60:         focusItem=null;
adamstark@60:         index++;
adamstark@60:       }
adamstark@60:       return focusItem;
adamstark@60:     }
adamstark@60: 
adamstark@60:     this.NavPrev = function(index)
adamstark@60:     {
adamstark@60:       var focusItem;
adamstark@60:       while (1)
adamstark@60:       {
adamstark@60:         var focusName = 'Item'+index;
adamstark@60:         focusItem = document.getElementById(focusName);
adamstark@60:         if (focusItem && focusItem.parentNode.parentNode.style.display=='block')
adamstark@60:         {
adamstark@60:           break;
adamstark@60:         }
adamstark@60:         else if (!focusItem) // last element
adamstark@60:         {
adamstark@60:           break;
adamstark@60:         }
adamstark@60:         focusItem=null;
adamstark@60:         index--;
adamstark@60:       }
adamstark@60:       return focusItem;
adamstark@60:     }
adamstark@60: 
adamstark@60:     this.ProcessKeys = function(e)
adamstark@60:     {
adamstark@114:       if (e.type == "keydown")
adamstark@60:       {
adamstark@60:         this.repeatOn = false;
adamstark@60:         this.lastKey = e.keyCode;
adamstark@60:       }
adamstark@60:       else if (e.type == "keypress")
adamstark@60:       {
adamstark@60:         if (!this.repeatOn)
adamstark@60:         {
adamstark@60:           if (this.lastKey) this.repeatOn = true;
adamstark@60:           return false; // ignore first keypress after keydown
adamstark@60:         }
adamstark@60:       }
adamstark@60:       else if (e.type == "keyup")
adamstark@60:       {
adamstark@60:         this.lastKey = 0;
adamstark@60:         this.repeatOn = false;
adamstark@60:       }
adamstark@60:       return this.lastKey!=0;
adamstark@60:     }
adamstark@60: 
adamstark@114:     this.Nav = function(evt,itemIndex)
adamstark@60:     {
adamstark@60:       var e  = (evt) ? evt : window.event; // for IE
adamstark@60:       if (e.keyCode==13) return true;
adamstark@60:       if (!this.ProcessKeys(e)) return false;
adamstark@60: 
adamstark@60:       if (this.lastKey==38) // Up
adamstark@60:       {
adamstark@60:         var newIndex = itemIndex-1;
adamstark@60:         var focusItem = this.NavPrev(newIndex);
adamstark@60:         if (focusItem)
adamstark@60:         {
adamstark@60:           var child = this.FindChildElement(focusItem.parentNode.parentNode.id);
adamstark@60:           if (child && child.style.display == 'block') // children visible
adamstark@114:           {
adamstark@60:             var n=0;
adamstark@60:             var tmpElem;
adamstark@60:             while (1) // search for last child
adamstark@60:             {
adamstark@60:               tmpElem = document.getElementById('Item'+newIndex+'_c'+n);
adamstark@60:               if (tmpElem)
adamstark@60:               {
adamstark@60:                 focusItem = tmpElem;
adamstark@60:               }
adamstark@60:               else // found it!
adamstark@60:               {
adamstark@60:                 break;
adamstark@60:               }
adamstark@60:               n++;
adamstark@60:             }
adamstark@60:           }
adamstark@60:         }
adamstark@60:         if (focusItem)
adamstark@60:         {
adamstark@60:           focusItem.focus();
adamstark@60:         }
adamstark@60:         else // return focus to search field
adamstark@60:         {
adamstark@114:            document.getElementById("MSearchField").focus();
adamstark@60:         }
adamstark@60:       }
adamstark@60:       else if (this.lastKey==40) // Down
adamstark@60:       {
adamstark@60:         var newIndex = itemIndex+1;
adamstark@60:         var focusItem;
adamstark@60:         var item = document.getElementById('Item'+itemIndex);
adamstark@60:         var elem = this.FindChildElement(item.parentNode.parentNode.id);
adamstark@60:         if (elem && elem.style.display == 'block') // children visible
adamstark@60:         {
adamstark@60:           focusItem = document.getElementById('Item'+itemIndex+'_c0');
adamstark@60:         }
adamstark@60:         if (!focusItem) focusItem = this.NavNext(newIndex);
adamstark@60:         if (focusItem)  focusItem.focus();
adamstark@60:       }
adamstark@60:       else if (this.lastKey==39) // Right
adamstark@60:       {
adamstark@60:         var item = document.getElementById('Item'+itemIndex);
adamstark@60:         var elem = this.FindChildElement(item.parentNode.parentNode.id);
adamstark@60:         if (elem) elem.style.display = 'block';
adamstark@60:       }
adamstark@60:       else if (this.lastKey==37) // Left
adamstark@60:       {
adamstark@60:         var item = document.getElementById('Item'+itemIndex);
adamstark@60:         var elem = this.FindChildElement(item.parentNode.parentNode.id);
adamstark@60:         if (elem) elem.style.display = 'none';
adamstark@60:       }
adamstark@60:       else if (this.lastKey==27) // Escape
adamstark@60:       {
adamstark@114:         searchBox.CloseResultsWindow();
adamstark@114:         document.getElementById("MSearchField").focus();
adamstark@60:       }
adamstark@60:       else if (this.lastKey==13) // Enter
adamstark@60:       {
adamstark@60:         return true;
adamstark@60:       }
adamstark@60:       return false;
adamstark@60:     }
adamstark@60: 
adamstark@60:     this.NavChild = function(evt,itemIndex,childIndex)
adamstark@60:     {
adamstark@60:       var e  = (evt) ? evt : window.event; // for IE
adamstark@60:       if (e.keyCode==13) return true;
adamstark@60:       if (!this.ProcessKeys(e)) return false;
adamstark@60: 
adamstark@60:       if (this.lastKey==38) // Up
adamstark@60:       {
adamstark@60:         if (childIndex>0)
adamstark@60:         {
adamstark@60:           var newIndex = childIndex-1;
adamstark@60:           document.getElementById('Item'+itemIndex+'_c'+newIndex).focus();
adamstark@60:         }
adamstark@60:         else // already at first child, jump to parent
adamstark@60:         {
adamstark@60:           document.getElementById('Item'+itemIndex).focus();
adamstark@60:         }
adamstark@60:       }
adamstark@60:       else if (this.lastKey==40) // Down
adamstark@60:       {
adamstark@60:         var newIndex = childIndex+1;
adamstark@60:         var elem = document.getElementById('Item'+itemIndex+'_c'+newIndex);
adamstark@60:         if (!elem) // last child, jump to parent next parent
adamstark@60:         {
adamstark@60:           elem = this.NavNext(itemIndex+1);
adamstark@60:         }
adamstark@60:         if (elem)
adamstark@60:         {
adamstark@60:           elem.focus();
adamstark@114:         }
adamstark@60:       }
adamstark@60:       else if (this.lastKey==27) // Escape
adamstark@60:       {
adamstark@114:         searchBox.CloseResultsWindow();
adamstark@114:         document.getElementById("MSearchField").focus();
adamstark@60:       }
adamstark@60:       else if (this.lastKey==13) // Enter
adamstark@60:       {
adamstark@60:         return true;
adamstark@60:       }
adamstark@60:       return false;
adamstark@60:     }
adamstark@60: }
adamstark@60: 
adamstark@60: function setKeyActions(elem,action)
adamstark@60: {
adamstark@60:   elem.setAttribute('onkeydown',action);
adamstark@60:   elem.setAttribute('onkeypress',action);
adamstark@60:   elem.setAttribute('onkeyup',action);
adamstark@60: }
adamstark@60: 
adamstark@60: function setClassAttr(elem,attr)
adamstark@60: {
adamstark@60:   elem.setAttribute('class',attr);
adamstark@60:   elem.setAttribute('className',attr);
adamstark@60: }
adamstark@60: 
adamstark@114: function createResults(resultsPath)
adamstark@60: {
adamstark@60:   var results = document.getElementById("SRResults");
adamstark@114:   results.innerHTML = '';
adamstark@60:   for (var e=0; e<searchData.length; e++)
adamstark@60:   {
adamstark@60:     var id = searchData[e][0];
adamstark@60:     var srResult = document.createElement('div');
adamstark@60:     srResult.setAttribute('id','SR_'+id);
adamstark@60:     setClassAttr(srResult,'SRResult');
adamstark@60:     var srEntry = document.createElement('div');
adamstark@60:     setClassAttr(srEntry,'SREntry');
adamstark@60:     var srLink = document.createElement('a');
adamstark@60:     srLink.setAttribute('id','Item'+e);
adamstark@60:     setKeyActions(srLink,'return searchResults.Nav(event,'+e+')');
adamstark@60:     setClassAttr(srLink,'SRSymbol');
adamstark@60:     srLink.innerHTML = searchData[e][1][0];
adamstark@60:     srEntry.appendChild(srLink);
adamstark@60:     if (searchData[e][1].length==2) // single result
adamstark@60:     {
adamstark@114:       srLink.setAttribute('href',resultsPath+searchData[e][1][1][0]);
adamstark@114:       srLink.setAttribute('onclick','searchBox.CloseResultsWindow()');
adamstark@60:       if (searchData[e][1][1][1])
adamstark@60:       {
adamstark@60:        srLink.setAttribute('target','_parent');
adamstark@60:       }
adamstark@114:       else
adamstark@114:       {
adamstark@114:        srLink.setAttribute('target','_blank');
adamstark@114:       }
adamstark@60:       var srScope = document.createElement('span');
adamstark@60:       setClassAttr(srScope,'SRScope');
adamstark@60:       srScope.innerHTML = searchData[e][1][1][2];
adamstark@60:       srEntry.appendChild(srScope);
adamstark@60:     }
adamstark@60:     else // multiple results
adamstark@60:     {
adamstark@60:       srLink.setAttribute('href','javascript:searchResults.Toggle("SR_'+id+'")');
adamstark@60:       var srChildren = document.createElement('div');
adamstark@60:       setClassAttr(srChildren,'SRChildren');
adamstark@60:       for (var c=0; c<searchData[e][1].length-1; c++)
adamstark@60:       {
adamstark@60:         var srChild = document.createElement('a');
adamstark@60:         srChild.setAttribute('id','Item'+e+'_c'+c);
adamstark@60:         setKeyActions(srChild,'return searchResults.NavChild(event,'+e+','+c+')');
adamstark@60:         setClassAttr(srChild,'SRScope');
adamstark@114:         srChild.setAttribute('href',resultsPath+searchData[e][1][c+1][0]);
adamstark@114:         srChild.setAttribute('onclick','searchBox.CloseResultsWindow()');
adamstark@60:         if (searchData[e][1][c+1][1])
adamstark@60:         {
adamstark@60:          srChild.setAttribute('target','_parent');
adamstark@60:         }
adamstark@114:         else
adamstark@114:         {
adamstark@114:          srChild.setAttribute('target','_blank');
adamstark@114:         }
adamstark@60:         srChild.innerHTML = searchData[e][1][c+1][2];
adamstark@60:         srChildren.appendChild(srChild);
adamstark@60:       }
adamstark@60:       srEntry.appendChild(srChildren);
adamstark@60:     }
adamstark@60:     srResult.appendChild(srEntry);
adamstark@60:     results.appendChild(srResult);
adamstark@60:   }
adamstark@60: }
adamstark@60: 
adamstark@114: function init_search()
adamstark@114: {
adamstark@114:   var results = document.getElementById("MSearchSelectWindow");
adamstark@114:   for (var key in indexSectionLabels)
adamstark@114:   {
adamstark@114:     var link = document.createElement('a');
adamstark@114:     link.setAttribute('class','SelectItem');
adamstark@114:     link.setAttribute('onclick','searchBox.OnSelectItem('+key+')');
adamstark@114:     link.href='javascript:void(0)';
adamstark@114:     link.innerHTML='<span class="SelectionMark">&#160;</span>'+indexSectionLabels[key];
adamstark@114:     results.appendChild(link);
adamstark@114:   }
adamstark@114:   searchBox.OnSelectItem(0);
adamstark@114: }
adamstark@114: /* @license-end */