org.eclipse.help.webapp/advanced/indexView.js - platform/eclipse.platform.ua - Git at Google

 /*******************************************************************************
  * Copyright (c) 2005, 2010 Intel Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     Intel Corporation - initial API and implementation
  *     IBM Corporation 2006, refactored index view into a single frame
  *     IBM Corporation 2007, allow partial loading of index
  *     IBM Corporation 2010, add filtering in toc and index view
  *******************************************************************************/

 var isMozilla = navigator.userAgent.indexOf("Mozilla") != -1 && parseInt(navigator.appVersion.substring(0,1)) >= 5;
 var isIE = navigator.userAgent.indexOf("MSIE") != -1;
 var showExpanders = false;
 var shown = false;
 var typeinPrevious = "";
 var typein;
 var lines = 30;
 var firstEntry;
 var lastEntry;
 var showAllChanged = false;
 var showAll;

 /**
  * Set value of the typein input field.
  * The value can be anchor's id or anchor's text.
  */

 function sizeList() {
     resizeVertical("indexList", "typeinTable", "navigation", 100, 5);
 }

 function computeLines() {
     // Compute the number of lines available using the placeholder
     try {
         var indexList = document.getElementById("indexList");
         var placeholder = document.getElementById("placeholder");
         // Add 1 to placeholder height allow for margin
 	    var ratio = indexList.offsetHeight / ( placeholder.offsetHeight + 1);
 	    lines = Math.floor(ratio);
 	    if (lines < 1) {
 	        lines = 1;
 	    }
 	} catch(ex) {}
 }

 /*
  * Called when the "DISPLAY" button is clicked
  */
 function showIndex() {
    loadChildren(typein.value);
 }

 function isVisible()
 {
     var visibility = parent.parent.getVisibility("index");
     return visibility == "visible";
 }


 function onloadHandler() {

     setRootAccessibility();
 	typein = document.getElementById("typein");

 	typein.value = "";
 	typeinPrevious = "";

 	if (isIE) {
 		document.onclick = treeMouseClickHandler;
 		document.onkeydown = keyDownHandler;
 	} else {
 		document.addEventListener('click', treeMouseClickHandler, true);
 		document.addEventListener('keydown', keyDownHandler, true);
 	}

 	setInterval("intervalHandler()", 200);
 	sizeList();
 	if (isVisible()) {
 	    onShow();
 	}
 }

 function setImage(imageNode, image) {
     var imageFile = imagesDirectory + "/" + image + ".gif";
     imageNode.src = imageFile;
     if (image == "plus") {
         imageNode.alt = altPlus;
     } else if (image == "minus") {
         imageNode.alt = altMinus;
     } else if (image == "toc_open") {
         imageNode.alt = altBookOpen;
     } else if (image == "toc_closed") {
         imageNode.alt = altBookClosed;
     } else if (image == "container_obj") {
         imageNode.alt = altContainer;
     } else if (image == "container_topic") {
         imageNode.alt = altContainerTopic;
     } else if (image == "topic") {
         imageNode.alt = altTopic;
     } else {
         imageNode.alt = "";
     }
 }

 function updateImage(imageNode, isExpanded) {
     var src = imageNode.src;
     if (isExpanded) {
         if (src.match( /toc_closed.gif$/)) {
             setImage(imageNode, "toc_open");
         }
     } else {
         if (src.match( /toc_open.gif$/)) {
             setImage(imageNode, "toc_closed");
         }
     }
 }

 /*
 Remove any existing children and read new ones
 */

 function loadChildren(startCharacters, mode, entry) {
     var parameters = "";
     var treeRoot = document.getElementById("tree_root");
     if (treeRoot !== null) {
         while (treeRoot.childNodes.length > 0) {
             treeRoot.removeChild(treeRoot.childNodes[0]);
         }
         var placeholder = document.createElement("DIV");
         placeholder.className = "unopened";
         placeholder.id = "placeholder";
         treeRoot.appendChild(placeholder);
         setLoadingMessage(treeRoot, loadingMessage);
         computeLines();
         var separator = "?";
         if (startCharacters) {
             parameters += "?start=";
             parameters += encodeURIComponent(startCharacters);
             separator = "&";
         }
         if (lines) {
             parameters += separator;
             parameters += "size=";
             parameters += lines;
             separator = "&";
         }
         if (mode) {
             parameters += separator;
             parameters += "mode=";
             parameters += mode;
             separator = "&";
         }
         if (entry) {
             parameters += separator;
             parameters += "entry=";
             parameters += entry;
             separator = "&";
         }
         if (showAllChanged) {
             showAllChanged = false;
             parameters += separator;
             parameters += "showAll="
             if (showAll) {
                 parameters += "on";
             } else {
                 parameters += "off";
             }
         }
         makeNodeRequest(parameters);
     }
 }

 function updateIndexTree(xml) {
     updateTree(xml);
     removePlaceholder();
     // Enable or disable the buttons
     var node = xml.documentElement;
     var previous = document.getElementById("previous");
     var enablePrevious = node.getAttribute("enablePrevious");
     if (enablePrevious == "false") {
         previous.className = "h";
     } else {
         previous.className = "enabled";
     }
     var next = document.getElementById("next");
     var enableNext = node.getAttribute("enableNext");
     if (enableNext == "false") {
         next.className = "h";
     } else {
         next.className = "enabled";
     }
 }

 function removePlaceholder() {
     var treeRoot = document.getElementById("tree_root");
     if (treeRoot == null) return;
     var placeholderDiv = findChild(treeRoot, "DIV");
     if (placeholderDiv && placeholderDiv.className == "unopened") {
         treeRoot.removeChild(placeholderDiv);
     }
 }

 function makeNodeRequest(parameters) {
     var href = "indexfragment" + parameters;
     var callback = function(xml) { updateIndexTree(xml);};
     var errorCallback = function() {
         // alert("ajax error");
     };
     ajaxRequest(href, callback, errorCallback);
 }

 // Cache the first and last so that if a request fails we don't lose our place
 function getFirstAndLast() {
     var treeRoot = document.getElementById("tree_root");
     if (treeRoot == null) return;
     var firstDiv = findChild(treeRoot, "DIV");
     if (firstDiv && firstDiv.nodeid) {
         firstEntry = firstDiv.nodeid.substring(1);
     }
     var lastDiv = findLastChild(treeRoot, "DIV");

     if (lastDiv && lastDiv.nodeid) {
         lastEntry = lastDiv.nodeid.substring(1);
     }
 }

 function loadPreviousPage() {
     getFirstAndLast();
     if (firstEntry) {
         loadChildren("", "previous", firstEntry);
     } else {
         loadChildren("");
     }
 }

 function loadNextPage() {
     getFirstAndLast();
     if (lastEntry) {
         loadChildren("", "next", lastEntry);
     } else {
         loadChildren("");
     }
 }

 function loadCurrentPage() {
     getFirstAndLast();
     if (firstEntry && firstEntry > 0) {
         loadChildren("", "next", firstEntry - 1);
     } else {
         loadChildren("");
     }
 }

 function onShow() {
 	sizeList();
     if (!shown) {
         // View is being shown for the first time
         loadChildren("");
         shown = true;
     }
 }

 function setShowAll(isShowAll) {
     showAll = isShowAll;
     showAllChanged = true;
     if (shown) {
         // Only refresh if we are already showing
         loadCurrentPage();
     }
 }

 /*
  * Function called when the typein value may have changed
  */

 function typeinChanged() {
     if (typein.value == typeinPrevious) {
         return;
     }
     typeinPrevious = typein.value;
     loadChildren(typeinPrevious);
 }

 /*
  * Handler for key down
  */
 function keyDownHandler(e)
 {
     var key = getKeycode(e);
     if (key == 33) {
         // Page up
         cancelEventBubble(e);
         loadPreviousPage();
         return;
     }
     if (key == 34) {
         // Page down
         cancelEventBubble(e);
         loadNextPage();
         return;
     }
 	var clickedNode = getEventTarget(e);
 	if (clickedNode && clickedNode.id == "typein") {
 	    typeinKeyDownHandler(e);
 	} else {
 	    treeKeyDownHandler(e);
 	}
 }

 function typeinKeyDownHandler(e) {
 	var key = getKeycode(e);

 	if (key == 13) { // enter
 	    typeinChanged();
 	    cancelEventBubble(e);
 	} else {
 	    return treeKeyDownHandler(e);
 	}

 	return false;
 }

 function handleSee(target) {
     var pathSegments = target.split(", ");
     typeinPrevious = null;
     typein.value = pathSegments[0];
     typeinChanged();
 }

 function repaint() {
     var href = "indexView.jsp";
     location.replace(href);
 }

 /**
   * Select the corresponding item in the index list on typein value change.
   * Check is performed periodically in short interval.
   */
 function intervalHandler() {
     typeinChanged();
 }
	/*******************************************************************************
	* Copyright (c) 2005, 2010 Intel Corporation and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* Intel Corporation - initial API and implementation
	* IBM Corporation 2006, refactored index view into a single frame
	* IBM Corporation 2007, allow partial loading of index
	* IBM Corporation 2010, add filtering in toc and index view
	*******************************************************************************/

	var isMozilla = navigator.userAgent.indexOf("Mozilla") != -1 && parseInt(navigator.appVersion.substring(0,1)) >= 5;
	var isIE = navigator.userAgent.indexOf("MSIE") != -1;
	var showExpanders = false;
	var shown = false;
	var typeinPrevious = "";
	var typein;
	var lines = 30;
	var firstEntry;
	var lastEntry;
	var showAllChanged = false;
	var showAll;

	/**
	* Set value of the typein input field.
	* The value can be anchor's id or anchor's text.
	*/

	function sizeList() {
	resizeVertical("indexList", "typeinTable", "navigation", 100, 5);
	}

	function computeLines() {
	// Compute the number of lines available using the placeholder
	try {
	var indexList = document.getElementById("indexList");
	var placeholder = document.getElementById("placeholder");
	// Add 1 to placeholder height allow for margin
	var ratio = indexList.offsetHeight / ( placeholder.offsetHeight + 1);
	lines = Math.floor(ratio);
	if (lines < 1) {
	lines = 1;
	}
	} catch(ex) {}
	}

	/*
	* Called when the "DISPLAY" button is clicked
	*/
	function showIndex() {
	loadChildren(typein.value);
	}

	function isVisible()
	{
	var visibility = parent.parent.getVisibility("index");
	return visibility == "visible";
	}


	function onloadHandler() {

	setRootAccessibility();
	typein = document.getElementById("typein");

	typein.value = "";
	typeinPrevious = "";

	if (isIE) {
	document.onclick = treeMouseClickHandler;
	document.onkeydown = keyDownHandler;
	} else {
	document.addEventListener('click', treeMouseClickHandler, true);
	document.addEventListener('keydown', keyDownHandler, true);
	}

	setInterval("intervalHandler()", 200);
	sizeList();
	if (isVisible()) {
	onShow();
	}
	}

	function setImage(imageNode, image) {
	var imageFile = imagesDirectory + "/" + image + ".gif";
	imageNode.src = imageFile;
	if (image == "plus") {
	imageNode.alt = altPlus;
	} else if (image == "minus") {
	imageNode.alt = altMinus;
	} else if (image == "toc_open") {
	imageNode.alt = altBookOpen;
	} else if (image == "toc_closed") {
	imageNode.alt = altBookClosed;
	} else if (image == "container_obj") {
	imageNode.alt = altContainer;
	} else if (image == "container_topic") {
	imageNode.alt = altContainerTopic;
	} else if (image == "topic") {
	imageNode.alt = altTopic;
	} else {
	imageNode.alt = "";
	}
	}

	function updateImage(imageNode, isExpanded) {
	var src = imageNode.src;
	if (isExpanded) {
	if (src.match( /toc_closed.gif$/)) {
	setImage(imageNode, "toc_open");
	}
	} else {
	if (src.match( /toc_open.gif$/)) {
	setImage(imageNode, "toc_closed");
	}
	}
	}

	/*
	Remove any existing children and read new ones
	*/

	function loadChildren(startCharacters, mode, entry) {
	var parameters = "";
	var treeRoot = document.getElementById("tree_root");
	if (treeRoot !== null) {
	while (treeRoot.childNodes.length > 0) {
	treeRoot.removeChild(treeRoot.childNodes[0]);
	}
	var placeholder = document.createElement("DIV");
	placeholder.className = "unopened";
	placeholder.id = "placeholder";
	treeRoot.appendChild(placeholder);
	setLoadingMessage(treeRoot, loadingMessage);
	computeLines();
	var separator = "?";
	if (startCharacters) {
	parameters += "?start=";
	parameters += encodeURIComponent(startCharacters);
	separator = "&";
	}
	if (lines) {
	parameters += separator;
	parameters += "size=";
	parameters += lines;
	separator = "&";
	}
	if (mode) {
	parameters += separator;
	parameters += "mode=";
	parameters += mode;
	separator = "&";
	}
	if (entry) {
	parameters += separator;
	parameters += "entry=";
	parameters += entry;
	separator = "&";
	}
	if (showAllChanged) {
	showAllChanged = false;
	parameters += separator;
	parameters += "showAll="
	if (showAll) {
	parameters += "on";
	} else {
	parameters += "off";
	}
	}
	makeNodeRequest(parameters);
	}
	}

	function updateIndexTree(xml) {
	updateTree(xml);
	removePlaceholder();
	// Enable or disable the buttons
	var node = xml.documentElement;
	var previous = document.getElementById("previous");
	var enablePrevious = node.getAttribute("enablePrevious");
	if (enablePrevious == "false") {
	previous.className = "h";
	} else {
	previous.className = "enabled";
	}
	var next = document.getElementById("next");
	var enableNext = node.getAttribute("enableNext");
	if (enableNext == "false") {
	next.className = "h";
	} else {
	next.className = "enabled";
	}
	}

	function removePlaceholder() {
	var treeRoot = document.getElementById("tree_root");
	if (treeRoot == null) return;
	var placeholderDiv = findChild(treeRoot, "DIV");
	if (placeholderDiv && placeholderDiv.className == "unopened") {
	treeRoot.removeChild(placeholderDiv);
	}
	}

	function makeNodeRequest(parameters) {
	var href = "indexfragment" + parameters;
	var callback = function(xml) { updateIndexTree(xml);};
	var errorCallback = function() {
	// alert("ajax error");
	};
	ajaxRequest(href, callback, errorCallback);
	}

	// Cache the first and last so that if a request fails we don't lose our place
	function getFirstAndLast() {
	var treeRoot = document.getElementById("tree_root");
	if (treeRoot == null) return;
	var firstDiv = findChild(treeRoot, "DIV");
	if (firstDiv && firstDiv.nodeid) {
	firstEntry = firstDiv.nodeid.substring(1);
	}
	var lastDiv = findLastChild(treeRoot, "DIV");

	if (lastDiv && lastDiv.nodeid) {
	lastEntry = lastDiv.nodeid.substring(1);
	}
	}

	function loadPreviousPage() {
	getFirstAndLast();
	if (firstEntry) {
	loadChildren("", "previous", firstEntry);
	} else {
	loadChildren("");
	}
	}

	function loadNextPage() {
	getFirstAndLast();
	if (lastEntry) {
	loadChildren("", "next", lastEntry);
	} else {
	loadChildren("");
	}
	}

	function loadCurrentPage() {
	getFirstAndLast();
	if (firstEntry && firstEntry > 0) {
	loadChildren("", "next", firstEntry - 1);
	} else {
	loadChildren("");
	}
	}

	function onShow() {
	sizeList();
	if (!shown) {
	// View is being shown for the first time
	loadChildren("");
	shown = true;
	}
	}

	function setShowAll(isShowAll) {
	showAll = isShowAll;
	showAllChanged = true;
	if (shown) {
	// Only refresh if we are already showing
	loadCurrentPage();
	}
	}

	/*
	* Function called when the typein value may have changed
	*/

	function typeinChanged() {
	if (typein.value == typeinPrevious) {
	return;
	}
	typeinPrevious = typein.value;
	loadChildren(typeinPrevious);
	}

	/*
	* Handler for key down
	*/
	function keyDownHandler(e)
	{
	var key = getKeycode(e);
	if (key == 33) {
	// Page up
	cancelEventBubble(e);
	loadPreviousPage();
	return;
	}
	if (key == 34) {
	// Page down
	cancelEventBubble(e);
	loadNextPage();
	return;
	}
	var clickedNode = getEventTarget(e);
	if (clickedNode && clickedNode.id == "typein") {
	typeinKeyDownHandler(e);
	} else {
	treeKeyDownHandler(e);
	}
	}

	function typeinKeyDownHandler(e) {
	var key = getKeycode(e);

	if (key == 13) { // enter
	typeinChanged();
	cancelEventBubble(e);
	} else {
	return treeKeyDownHandler(e);
	}

	return false;
	}

	function handleSee(target) {
	var pathSegments = target.split(", ");
	typeinPrevious = null;
	typein.value = pathSegments[0];
	typeinChanged();
	}

	function repaint() {
	var href = "indexView.jsp";
	location.replace(href);
	}

	/**
	* Select the corresponding item in the index list on typein value change.
	* Check is performed periodically in short interval.
	*/
	function intervalHandler() {
	typeinChanged();
	}