experiments/editorFramework/src/Javascript_Layer_0/Main.js - incubator-retired-corinthia - Git at Google

 // Licensed to the Apache Software Foundation (ASF) under one
 // or more contributor license agreements.  See the NOTICE file
 // distributed with this work for additional information
 // regarding copyright ownership.  The ASF licenses this file
 // to you under the Apache License, Version 2.0 (the
 // "License"); you may not use this file except in compliance
 // with the License.  You may obtain a copy of the License at
 //
 //   http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing,
 // software distributed under the License is distributed on an
 // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 // KIND, either express or implied.  See the License for the
 // specific language governing permissions and limitations
 // under the License.

 var Main_getLanguage;
 var Main_setLanguage;
 var Main_setGenerator;
 var Main_isEmptyDocument;
 var Main_prepareForSave;
 var Main_getHTML;
 var Main_getErrorReportingInfo;
 var Main_removeUnsupportedInput;
 var Main_removeSpecial;
 var Main_execute;
 var Main_init;

 var Main_clientRectsBug;

 (function() {

     // public
     Main_getLanguage = function()
     {
         var lang = document.documentElement.getAttribute("lang");
         if (lang != null)
             lang = lang.replace(/-/g,"_");
         return lang;
     }

     // public
     Main_setLanguage = function(lang)
     {
         if ((lang == null) || (lang == "")) {
             DOM_removeAttribute(document.documentElement,"lang");
         }
         else {
             lang = lang.replace(/_/g,"-");
             DOM_setAttribute(document.documentElement,"lang",lang);
         }
     }

     // public
     Main_removeUnsupportedInput = function()
     {
         recurse(document.documentElement);

         function recurse(node)
         {
             // Delete comments and processing instructions
             if ((node.nodeType != Node.TEXT_NODE) &&
                 (node.nodeType != Node.ELEMENT_NODE)) {
                 DOM_deleteNode(node);
             }
             else {
                 var next;
                 for (var child = node.firstChild; child != null; child = next) {
                     next = child.nextSibling;
                     recurse(child);
                 }
             }
         }
     }

     // private
     function addMetaCharset()
     {
         var head = DOM_documentHead(document);
         var next;
         for (var child = head.firstChild; child != null; child = next) {
             next = child.nextSibling;
             if ((child._type == HTML_META) && (child.hasAttribute("charset"))) {
                 DOM_deleteNode(child);
             }
             else if ((child._type == HTML_META) && child.hasAttribute("http-equiv") &&
                      (child.getAttribute("http-equiv").toLowerCase() == "content-type")) {
                 DOM_deleteNode(child);
             }
         }

         var meta = DOM_createElement(document,"META");
         DOM_setAttribute(meta,"charset","utf-8");
         DOM_insertBefore(head,meta,head.firstChild);
     }

     // public
     Main_setGenerator = function(generator)
     {
         return UndoManager_disableWhileExecuting(function() {
             var head = DOM_documentHead(document);
             for (var child = head.firstChild; child != null; child = child.nextSibling) {
                 if ((child._type == HTML_META) &&
                     child.hasAttribute("name") &&
                     (child.getAttribute("name").toLowerCase() == "generator")) {
                     var origGenerator = DOM_getAttribute(child,"content");
                     DOM_setAttribute(child,"content",generator);

                     if (origGenerator == null)
                         return "";
                     else
                         return origGenerator;
                 }
             }

             var meta = DOM_createElement(document,"META");
             DOM_setAttribute(meta,"name","generator");
             DOM_setAttribute(meta,"content",generator);
             DOM_insertBefore(head,meta,head.firstChild);

             return "";
         });
     }

     // public
     Main_isEmptyDocument = function()
     {
         return !nodeHasContent(document.body);
     }

     // public
     Main_prepareForSave = function()
     {
         // Force any end-of-group actions to be performed
         UndoManager_newGroup();
         return true;
     }

     // public
     Main_getHTML = function()
     {
         return document.documentElement.outerHTML;
     }

     // public
     Main_getErrorReportingInfo = function()
     {
         if (document.documentElement == null)
             return "(document.documentElement is null)";
         try {
             var html = htmlWithSelection();
             cleanse(html);
             return html.outerHTML;
         }
         catch (e) {
             try {
                 var html = DOM_cloneNode(document.documentElement,true);
                 cleanse(html);
                 return html.outerHTML+"\n[Error getting selection: "+e+"]";
             }
             catch (e2) {
                 return "[Error getting HTML: "+e2+"]";
             }
         }

         function cleanse(node)
         {
             switch (node._type) {
             case HTML_TEXT:
             case HTML_COMMENT:
                 DOM_setNodeValue(node,cleanseString(node.nodeValue));
                 break;
             case HTML_STYLE:
             case HTML_SCRIPT:
                 return;
             default:
                 if (node.nodeType == Node.ELEMENT_NODE) {
                     cleanseAttribute(node,"original");
                     if (node.hasAttribute("href") && !node.getAttribute("href").match(/^#/))
                         cleanseAttribute(node,"href");
                     for (var child = node.firstChild; child != null; child = child.nextSibling)
                         cleanse(child);
                 }
                 break;
             }
         }

         function cleanseAttribute(node,name)
         {
             if (node.hasAttribute(name)) {
                 var value = node.getAttribute(name);
                 value = cleanseString(value);
                 DOM_setAttribute(node,name,value);
             }
         }

         function cleanseString(str)
         {
             return str.replace(/[^\s\.\@\^]/g,"X");
         }

         function htmlWithSelection()
         {
             var selectionRange = Selection_get();
             if (selectionRange != null) {
                 selectionRange = Range_forwards(selectionRange);
                 var startSave = new Object();
                 var endSave = new Object();

                 var html = null;

                 Range_trackWhileExecuting(selectionRange,function() {
                     // We use the strings @@^^ and ^^@@ to represent the selection
                     // start and end, respectively. The reason for this is that after we have
                     // cloned the tree, all text will be removed. We keeping the @ and ^
                     // characters so we have some way to identifiy the selection markers;
                     // leaving these in is not going to reveal any confidential information.

                     addPositionMarker(selectionRange.end,"^^@@",endSave);
                     addPositionMarker(selectionRange.start,"@@^^",startSave);

                     html = DOM_cloneNode(document.documentElement,true);

                     removePositionMarker(selectionRange.start,startSave);
                     removePositionMarker(selectionRange.end,endSave);
                 });

                 return html;
             }
             else {
                 return DOM_cloneNode(document.documentElement,true);
             }
         }

         function addPositionMarker(pos,name,save)
         {
             var node = pos.node;
             var offset = pos.offset;
             if (node.nodeType == Node.ELEMENT_NODE) {
                 save.tempNode = DOM_createTextNode(document,name);
                 DOM_insertBefore(node,save.tempNode,node.childNodes[offset]);
             }
             else if (node.nodeType == Node.TEXT_NODE) {
                 save.originalNodeValue = node.nodeValue;
                 node.nodeValue = node.nodeValue.slice(0,offset) + name + node.nodeValue.slice(offset);
             }
         }

         function removePositionMarker(pos,save)
         {
             var node = pos.node;
             var offset = pos.offset;
             if (pos.node.nodeType == Node.ELEMENT_NODE) {
                 DOM_deleteNode(save.tempNode);
             }
             else if (pos.node.nodeType == Node.TEXT_NODE) {
                 node.nodeValue = save.originalNodeValue;
             }
         }
     }

     // public
     Main_removeSpecial = function(node)
     {
         // We process the children first, so that if there are any nested removable elements (e.g.
         // a selection span inside of an autocorrect span), all levels of nesting are taken care of
         var next;
         for (var child = node.firstChild; child != null; child = next) {
             next = child.nextSibling;
             Main_removeSpecial(child);
         }

         var cssClass = null;
         if ((node.nodeType == Node.ELEMENT_NODE) && node.hasAttribute("class"))
             cssClass = node.getAttribute("class");

         if ((cssClass == Keys.HEADING_NUMBER) ||
             (cssClass == Keys.FIGURE_NUMBER) ||
             (cssClass == Keys.TABLE_NUMBER) ||
             (cssClass == Keys.AUTOCORRECT_CLASS) ||
             (cssClass == Keys.SELECTION_CLASS) ||
             (cssClass == Keys.SELECTION_HIGHLIGHT)) {
             DOM_removeNodeButKeepChildren(node);
         }
         else if ((node._type == HTML_META) &&
                  node.hasAttribute("name") &&
                  (node.getAttribute("name").toLowerCase() == "viewport")) {
             DOM_deleteNode(node);
         }
         else if (node._type == HTML_LINK) {
             if ((node.getAttribute("rel") == "stylesheet") &&
                 (node.getAttribute("href") == Styles_getBuiltinCSSURL())) {
                 DOM_deleteNode(node);
             }
         }
     }

     function simplifyStackString(e)
     {
         if (e.stack == null)
             return "";
         var lines = e.stack.toString().split(/\n/);
         for (var i = 0; i < lines.length; i++) {
             var nameMatch = lines[i].match(/^(.*)@/);
             var name = (nameMatch != null) ? nameMatch[1] : "(anonymous function)";
             var locMatch = lines[i].match(/:([0-9]+:[0-9]+)$/);
             var loc = (locMatch != null) ? locMatch[1] : "?";
             lines[i] = "stack["+(lines.length-i-1)+"] = "+name+"@"+loc;
         }
         return lines.join("\n");
     }

     // public
     Main_execute = function(fun)
     {
         try {
             var res = fun();
             PostponedActions_perform();
             return res;
         }
         catch (e) {
             var message = (e.message != null) ? e.message : e.toString();
             var stack = simplifyStackString(e);
             Editor_error(message+"\n"+stack);
         }
     }

     function fixEmptyBody()
     {
         for (var child = document.body.firstChild; child != null; child = child.nextSibling) {
             if (nodeHasContent(child))
                 return;
         }

         for (var child = document.body.firstChild; child != null; child = child.nextSibling) {
             if (child._type == HTML_P) {
                 Cursor_updateBRAtEndOfParagraph(child);
                 return;
             }
         }

         var p = DOM_createElement(document,"P");
         var br = DOM_createElement(document,"BR");
         DOM_appendChild(p,br);
         DOM_appendChild(document.body,p);
     }

     // public
     Main_init = function(width,textScale,cssURL,clientRectsBug)
     {
         try {
             Main_clientRectsBug = clientRectsBug;
             if (document.documentElement == null)
                 throw new Error("document.documentElement is null");
             if (document.body == null)
                 throw new Error("document.body is null");
             var timing = new TimingInfo();
             timing.start();
             DOM_assignNodeIds(document);
             timing.addEntry("DOM_assignNodeIds");
             Main_removeUnsupportedInput();
             timing.addEntry("Main_removeUnsupportedInput");
             addMetaCharset();
             timing.addEntry("addMetaCharset");
             fixEmptyBody();
             timing.addEntry("fixEmptyBody");
             Outline_init();
             timing.addEntry("Outline_init");
             Styles_init(cssURL);
             timing.addEntry("Styles_init");
             Viewport_init(width,textScale);
             timing.addEntry("Viewport_init");
             AutoCorrect_init();
             timing.addEntry("AutoCorrect_init");

             PostponedActions_perform();
             timing.addEntry("PostponedActions_perform");
             Cursor_moveToStartOfDocument();
             timing.addEntry("Cursor_moveToStartOfDocument");

             UndoManager_clear();
             timing.addEntry("UndoManager_clear");
 //            timing.print();

             return true;
         }
         catch (e) {
             return e.toString();
         }
     }

 })();
	// Licensed to the Apache Software Foundation (ASF) under one
	// or more contributor license agreements. See the NOTICE file
	// distributed with this work for additional information
	// regarding copyright ownership. The ASF licenses this file
	// to you under the Apache License, Version 2.0 (the
	// "License"); you may not use this file except in compliance
	// with the License. You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing,
	// software distributed under the License is distributed on an
	// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	// KIND, either express or implied. See the License for the
	// specific language governing permissions and limitations
	// under the License.

	var Main_getLanguage;
	var Main_setLanguage;
	var Main_setGenerator;
	var Main_isEmptyDocument;
	var Main_prepareForSave;
	var Main_getHTML;
	var Main_getErrorReportingInfo;
	var Main_removeUnsupportedInput;
	var Main_removeSpecial;
	var Main_execute;
	var Main_init;

	var Main_clientRectsBug;

	(function() {

	// public
	Main_getLanguage = function()
	{
	var lang = document.documentElement.getAttribute("lang");
	if (lang != null)
	lang = lang.replace(/-/g,"_");
	return lang;
	}

	// public
	Main_setLanguage = function(lang)
	{
	if ((lang == null) \|\| (lang == "")) {
	DOM_removeAttribute(document.documentElement,"lang");
	}
	else {
	lang = lang.replace(/_/g,"-");
	DOM_setAttribute(document.documentElement,"lang",lang);
	}
	}

	// public
	Main_removeUnsupportedInput = function()
	{
	recurse(document.documentElement);

	function recurse(node)
	{
	// Delete comments and processing instructions
	if ((node.nodeType != Node.TEXT_NODE) &&
	(node.nodeType != Node.ELEMENT_NODE)) {
	DOM_deleteNode(node);
	}
	else {
	var next;
	for (var child = node.firstChild; child != null; child = next) {
	next = child.nextSibling;
	recurse(child);
	}
	}
	}
	}

	// private
	function addMetaCharset()
	{
	var head = DOM_documentHead(document);
	var next;
	for (var child = head.firstChild; child != null; child = next) {
	next = child.nextSibling;
	if ((child._type == HTML_META) && (child.hasAttribute("charset"))) {
	DOM_deleteNode(child);
	}
	else if ((child._type == HTML_META) && child.hasAttribute("http-equiv") &&
	(child.getAttribute("http-equiv").toLowerCase() == "content-type")) {
	DOM_deleteNode(child);
	}
	}

	var meta = DOM_createElement(document,"META");
	DOM_setAttribute(meta,"charset","utf-8");
	DOM_insertBefore(head,meta,head.firstChild);
	}

	// public
	Main_setGenerator = function(generator)
	{
	return UndoManager_disableWhileExecuting(function() {
	var head = DOM_documentHead(document);
	for (var child = head.firstChild; child != null; child = child.nextSibling) {
	if ((child._type == HTML_META) &&
	child.hasAttribute("name") &&
	(child.getAttribute("name").toLowerCase() == "generator")) {
	var origGenerator = DOM_getAttribute(child,"content");
	DOM_setAttribute(child,"content",generator);

	if (origGenerator == null)
	return "";
	else
	return origGenerator;
	}
	}

	var meta = DOM_createElement(document,"META");
	DOM_setAttribute(meta,"name","generator");
	DOM_setAttribute(meta,"content",generator);
	DOM_insertBefore(head,meta,head.firstChild);

	return "";
	});
	}

	// public
	Main_isEmptyDocument = function()
	{
	return !nodeHasContent(document.body);
	}

	// public
	Main_prepareForSave = function()
	{
	// Force any end-of-group actions to be performed
	UndoManager_newGroup();
	return true;
	}

	// public
	Main_getHTML = function()
	{
	return document.documentElement.outerHTML;
	}

	// public
	Main_getErrorReportingInfo = function()
	{
	if (document.documentElement == null)
	return "(document.documentElement is null)";
	try {
	var html = htmlWithSelection();
	cleanse(html);
	return html.outerHTML;
	}
	catch (e) {
	try {
	var html = DOM_cloneNode(document.documentElement,true);
	cleanse(html);
	return html.outerHTML+"\n[Error getting selection: "+e+"]";
	}
	catch (e2) {
	return "[Error getting HTML: "+e2+"]";
	}
	}

	function cleanse(node)
	{
	switch (node._type) {
	case HTML_TEXT:
	case HTML_COMMENT:
	DOM_setNodeValue(node,cleanseString(node.nodeValue));
	break;
	case HTML_STYLE:
	case HTML_SCRIPT:
	return;
	default:
	if (node.nodeType == Node.ELEMENT_NODE) {
	cleanseAttribute(node,"original");
	if (node.hasAttribute("href") && !node.getAttribute("href").match(/^#/))
	cleanseAttribute(node,"href");
	for (var child = node.firstChild; child != null; child = child.nextSibling)
	cleanse(child);
	}
	break;
	}
	}

	function cleanseAttribute(node,name)
	{
	if (node.hasAttribute(name)) {
	var value = node.getAttribute(name);
	value = cleanseString(value);
	DOM_setAttribute(node,name,value);
	}
	}

	function cleanseString(str)
	{
	return str.replace(/[^\s\.\@\^]/g,"X");
	}

	function htmlWithSelection()
	{
	var selectionRange = Selection_get();
	if (selectionRange != null) {
	selectionRange = Range_forwards(selectionRange);
	var startSave = new Object();
	var endSave = new Object();

	var html = null;

	Range_trackWhileExecuting(selectionRange,function() {
	// We use the strings @@^^ and ^^@@ to represent the selection
	// start and end, respectively. The reason for this is that after we have
	// cloned the tree, all text will be removed. We keeping the @ and ^
	// characters so we have some way to identifiy the selection markers;
	// leaving these in is not going to reveal any confidential information.

	addPositionMarker(selectionRange.end,"^^@@",endSave);
	addPositionMarker(selectionRange.start,"@@^^",startSave);

	html = DOM_cloneNode(document.documentElement,true);

	removePositionMarker(selectionRange.start,startSave);
	removePositionMarker(selectionRange.end,endSave);
	});

	return html;
	}
	else {
	return DOM_cloneNode(document.documentElement,true);
	}
	}

	function addPositionMarker(pos,name,save)
	{
	var node = pos.node;
	var offset = pos.offset;
	if (node.nodeType == Node.ELEMENT_NODE) {
	save.tempNode = DOM_createTextNode(document,name);
	DOM_insertBefore(node,save.tempNode,node.childNodes[offset]);
	}
	else if (node.nodeType == Node.TEXT_NODE) {
	save.originalNodeValue = node.nodeValue;
	node.nodeValue = node.nodeValue.slice(0,offset) + name + node.nodeValue.slice(offset);
	}
	}

	function removePositionMarker(pos,save)
	{
	var node = pos.node;
	var offset = pos.offset;
	if (pos.node.nodeType == Node.ELEMENT_NODE) {
	DOM_deleteNode(save.tempNode);
	}
	else if (pos.node.nodeType == Node.TEXT_NODE) {
	node.nodeValue = save.originalNodeValue;
	}
	}
	}

	// public
	Main_removeSpecial = function(node)
	{
	// We process the children first, so that if there are any nested removable elements (e.g.
	// a selection span inside of an autocorrect span), all levels of nesting are taken care of
	var next;
	for (var child = node.firstChild; child != null; child = next) {
	next = child.nextSibling;
	Main_removeSpecial(child);
	}

	var cssClass = null;
	if ((node.nodeType == Node.ELEMENT_NODE) && node.hasAttribute("class"))
	cssClass = node.getAttribute("class");

	if ((cssClass == Keys.HEADING_NUMBER) \|\|
	(cssClass == Keys.FIGURE_NUMBER) \|\|
	(cssClass == Keys.TABLE_NUMBER) \|\|
	(cssClass == Keys.AUTOCORRECT_CLASS) \|\|
	(cssClass == Keys.SELECTION_CLASS) \|\|
	(cssClass == Keys.SELECTION_HIGHLIGHT)) {
	DOM_removeNodeButKeepChildren(node);
	}
	else if ((node._type == HTML_META) &&
	node.hasAttribute("name") &&
	(node.getAttribute("name").toLowerCase() == "viewport")) {
	DOM_deleteNode(node);
	}
	else if (node._type == HTML_LINK) {
	if ((node.getAttribute("rel") == "stylesheet") &&
	(node.getAttribute("href") == Styles_getBuiltinCSSURL())) {
	DOM_deleteNode(node);
	}
	}
	}

	function simplifyStackString(e)
	{
	if (e.stack == null)
	return "";
	var lines = e.stack.toString().split(/\n/);
	for (var i = 0; i < lines.length; i++) {
	var nameMatch = lines[i].match(/^(.*)@/);
	var name = (nameMatch != null) ? nameMatch[1] : "(anonymous function)";
	var locMatch = lines[i].match(/:([0-9]+:[0-9]+)$/);
	var loc = (locMatch != null) ? locMatch[1] : "?";
	lines[i] = "stack["+(lines.length-i-1)+"] = "+name+"@"+loc;
	}
	return lines.join("\n");
	}

	// public
	Main_execute = function(fun)
	{
	try {
	var res = fun();
	PostponedActions_perform();
	return res;
	}
	catch (e) {
	var message = (e.message != null) ? e.message : e.toString();
	var stack = simplifyStackString(e);
	Editor_error(message+"\n"+stack);
	}
	}

	function fixEmptyBody()
	{
	for (var child = document.body.firstChild; child != null; child = child.nextSibling) {
	if (nodeHasContent(child))
	return;
	}

	for (var child = document.body.firstChild; child != null; child = child.nextSibling) {
	if (child._type == HTML_P) {
	Cursor_updateBRAtEndOfParagraph(child);
	return;
	}
	}

	var p = DOM_createElement(document,"P");
	var br = DOM_createElement(document,"BR");
	DOM_appendChild(p,br);
	DOM_appendChild(document.body,p);
	}

	// public
	Main_init = function(width,textScale,cssURL,clientRectsBug)
	{
	try {
	Main_clientRectsBug = clientRectsBug;
	if (document.documentElement == null)
	throw new Error("document.documentElement is null");
	if (document.body == null)
	throw new Error("document.body is null");
	var timing = new TimingInfo();
	timing.start();
	DOM_assignNodeIds(document);
	timing.addEntry("DOM_assignNodeIds");
	Main_removeUnsupportedInput();
	timing.addEntry("Main_removeUnsupportedInput");
	addMetaCharset();
	timing.addEntry("addMetaCharset");
	fixEmptyBody();
	timing.addEntry("fixEmptyBody");
	Outline_init();
	timing.addEntry("Outline_init");
	Styles_init(cssURL);
	timing.addEntry("Styles_init");
	Viewport_init(width,textScale);
	timing.addEntry("Viewport_init");
	AutoCorrect_init();
	timing.addEntry("AutoCorrect_init");

	PostponedActions_perform();
	timing.addEntry("PostponedActions_perform");
	Cursor_moveToStartOfDocument();
	timing.addEntry("Cursor_moveToStartOfDocument");

	UndoManager_clear();
	timing.addEntry("UndoManager_clear");
	// timing.print();

	return true;
	}
	catch (e) {
	return e.toString();
	}
	}

	})();