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