Subversion Repositories Applications.papyrus

if(!dojo._hasResource["dijit._editor.plugins.EnterKeyHandling"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dijit._editor.plugins.EnterKeyHandling"] = true;
dojo.provide("dijit._editor.plugins.EnterKeyHandling");


dojo.declare("dijit._editor.plugins.EnterKeyHandling",null,{
        // blockNodeForEnter: String
        //              this property decides the behavior of Enter key. It can be either P,
        //              DIV, BR, or empty (which means disable this feature). Anything else
        //              will trigger errors.
        blockNodeForEnter: 'P',
        constructor: function(args){
                if(args){
                        dojo.mixin(this,args);
                }
        },
        setEditor: function(editor){
                this.editor=editor;
                if(this.blockNodeForEnter=='BR'){
                        if(dojo.isIE){
                                editor.contentDomPreFilters.push(dojo.hitch(this, "regularPsToSingleLinePs"));
                                editor.contentDomPostFilters.push(dojo.hitch(this, "singleLinePsToRegularPs"));
                                editor.onLoadDeferred.addCallback(dojo.hitch(this, "_fixNewLineBehaviorForIE"));
                        }else{
                                editor.onLoadDeferred.addCallback(dojo.hitch(this,function(d){
                                        try{
                                                this.editor.document.execCommand("insertBrOnReturn", false, true);
                                        }catch(e){};
                                        return d;
                                }));
                        }
                }else if(this.blockNodeForEnter){
                        //add enter key handler
                        // FIXME: need to port to the new event code!!
                        dojo['require']('dijit._editor.range');
                        var h=dojo.hitch(this,this.handleEnterKey);
                        editor.addKeyHandler(13, 0, h); //enter
                        editor.addKeyHandler(13, 2, h); //shift+enter
                        this.connect(this.editor,'onKeyPressed','onKeyPressed');
                }
        },
        connect: function(o,f,tf){
                if(!this._connects){
                        this._connects=[];
                }
                this._connects.push(dojo.connect(o,f,this,tf));
        },
        destroy: function(){
                dojo.forEach(this._connects,dojo.disconnect);
                this._connects=[];
        },
        onKeyPressed: function(e){
                if(this._checkListLater){
                        if(dojo.withGlobal(this.editor.window, 'isCollapsed', dijit._editor.selection)){
                                if(!dojo.withGlobal(this.editor.window, 'hasAncestorElement', dijit._editor.selection, ['LI'])){
                                        //circulate the undo detection code by calling RichText::execCommand directly
                                        dijit._editor.RichText.prototype.execCommand.apply(this.editor, ['formatblock',this.blockNodeForEnter]);
                                        //set the innerHTML of the new block node
                                        var block = dojo.withGlobal(this.editor.window, 'getAncestorElement', dijit._editor.selection, [this.blockNodeForEnter])
                                        if(block){
                                                block.innerHTML=this.bogusHtmlContent;
                                                if(dojo.isIE){
                                                        //the following won't work, it will move the caret to the last list item in the previous list
//                                                      var newrange = dijit.range.create();
//                                                      newrange.setStart(block.firstChild,0);
//                                                      var selection = dijit.range.getSelection(this.editor.window)
//                                                      selection.removeAllRanges();
//                                                      selection.addRange(newrange);
                                                        //move to the start by move backward one char
                                                        var r = this.editor.document.selection.createRange();
                                                        r.move('character',-1);
                                                        r.select();
                                                }
                                        }else{
                                                alert('onKeyPressed: Can not find the new block node');
                                        }
                                }
                        }
                        this._checkListLater = false;
                }else if(this._pressedEnterInBlock){
                        //the new created is the original current P, so we have previousSibling below
                        this.removeTrailingBr(this._pressedEnterInBlock.previousSibling);
                        delete this._pressedEnterInBlock;
                }
        },
        bogusHtmlContent: ' ',
        blockNodes: /^(?:H1|H2|H3|H4|H5|H6|LI)$/,
        handleEnterKey: function(e){
                // summary: manually handle enter key event to make the behavior consistant across
                //      all supported browsers. See property blockNodeForEnter for available options
                if(!this.blockNodeForEnter){ return true; } //let browser handle this
                if(e.shiftKey  //shift+enter always generates <br>
                        || this.blockNodeForEnter=='BR'){
                        var parent = dojo.withGlobal(this.editor.window, "getParentElement", dijit._editor.selection);
                        var header = dijit.range.getAncestor(parent,this.editor.blockNodes);
                        if(header){
                                if(header.tagName=='LI'){
                                        return true; //let brower handle
                                }
                                var selection = dijit.range.getSelection(this.editor.window);
                                var range = selection.getRangeAt(0);
                                if(!range.collapsed){
                                        range.deleteContents();
                                }
                                if(dijit.range.atBeginningOfContainer(header, range.startContainer, range.startOffset)){
                                        dojo.place(this.editor.document.createElement('br'), header, "before");
                                }else if(dijit.range.atEndOfContainer(header, range.startContainer, range.startOffset)){
                                        dojo.place(this.editor.document.createElement('br'), header, "after");
                                        var newrange = dijit.range.create();
                                        newrange.setStartAfter(header);

                                        selection.removeAllRanges();
                                        selection.addRange(newrange);
                                }else{
                                        return true; //let brower handle
                                }
                        }else{
                                //don't change this: do not call this.execCommand, as that may have other logic in subclass
                                // FIXME
                                dijit._editor.RichText.prototype.execCommand.call(this.editor, 'inserthtml', '<br>');
                        }
                        return false;
                }
                var _letBrowserHandle = true;
                //blockNodeForEnter is either P or DIV
                //first remove selection
                var selection = dijit.range.getSelection(this.editor.window);
                var range = selection.getRangeAt(0);
                if(!range.collapsed){
                        range.deleteContents();
                }

                var block = dijit.range.getBlockAncestor(range.endContainer, null, this.editor.editNode);

                if(block.blockNode && block.blockNode.tagName == 'LI'){
                        this._checkListLater = true;
                        return true;
                }else{
                        this._checkListLater = false;
                }

                //text node directly under body, let's wrap them in a node
                if(!block.blockNode){
                        this.editor.document.execCommand('formatblock',false, this.blockNodeForEnter);
                        //get the newly created block node
                        // FIXME
                        block = {blockNode:dojo.withGlobal(this.editor.window, "getAncestorElement", dijit._editor.selection, [this.blockNodeForEnter]),
                                        blockContainer: this.editor.editNode};
                        if(block.blockNode){
                                if((block.blockNode.textContent||block.blockNode.innerHTML).replace(/^\s+|\s+$/g, "").length==0){
                                        this.removeTrailingBr(block.blockNode);
                                        return false;
                                }
                        }else{
                                block.blockNode = this.editor.editNode;
                        }
                        selection = dijit.range.getSelection(this.editor.window);
                        range = selection.getRangeAt(0);
                }
                var newblock = this.editor.document.createElement(this.blockNodeForEnter);
                newblock.innerHTML=this.bogusHtmlContent;
                this.removeTrailingBr(block.blockNode);
                if(dijit.range.atEndOfContainer(block.blockNode, range.endContainer, range.endOffset)){
                        if(block.blockNode === block.blockContainer){
                                block.blockNode.appendChild(newblock);
                        }else{
                                dojo.place(newblock, block.blockNode, "after");
                        }
                        _letBrowserHandle = false;
                        //lets move caret to the newly created block
                        var newrange = dijit.range.create();
                        newrange.setStart(newblock,0);
                        selection.removeAllRanges();
                        selection.addRange(newrange);
                        if(this.editor.height){
                                newblock.scrollIntoView(false);
                        }
                }else if(dijit.range.atBeginningOfContainer(block.blockNode,
                                range.startContainer, range.startOffset)){
                        if(block.blockNode === block.blockContainer){
                                dojo.place(newblock, block.blockNode, "first");
                        }else{
                                dojo.place(newblock, block.blockNode, "before");
                        }
                        if(this.editor.height){
                                //browser does not scroll the caret position into view, do it manually
                                newblock.scrollIntoView(false);
                        }
                        _letBrowserHandle = false;
                }else{ //press enter in the middle of P
                        if(dojo.isMoz){
                                //press enter in middle of P may leave a trailing <br/>, let's remove it later
                                this._pressedEnterInBlock = block.blockNode;
                        }
                }
                return _letBrowserHandle;
        },
        removeTrailingBr: function(container){
                if(/P|DIV|LI/i .test(container.tagName)){
                        var para = container;
                }else{
                        var para = dijit._editor.selection.getParentOfType(container,['P','DIV','LI']);
                }

                if(!para){ return; }
                if(para.lastChild){
                        if(para.childNodes.length>1 && para.lastChild.nodeType==3 && /^[\s\xAD]*$/ .test(para.lastChild.nodeValue)){
                                dojo._destroyElement(para.lastChild);
                        }
                        if(para.lastChild && para.lastChild.tagName=='BR'){
                                dojo._destroyElement(para.lastChild);
                        }
                }
                if(para.childNodes.length==0){
                        para.innerHTML=this.bogusHtmlContent;
                }
        },
        _fixNewLineBehaviorForIE: function(d){
                if(typeof this.editor.document.__INSERTED_EDITIOR_NEWLINE_CSS == "undefined"){
                        var lineFixingStyles = "p{margin:0 !important;}";
                        var insertCssText = function(
                                /*String*/ cssStr,
                                /*Document*/ doc,
                                /*String*/ URI)
                        {
                                //      summary:
                                //              Attempt to insert CSS rules into the document through inserting a
                                //              style element

                                // DomNode Style  = insertCssText(String ".dojoMenu {color: green;}"[, DomDoc document, dojo.uri.Uri Url ])
                                if(!cssStr){
                                        return; //      HTMLStyleElement
                                }
                                if(!doc){ doc = document; }
//                                      if(URI){// fix paths in cssStr
//                                              cssStr = dojo.html.fixPathsInCssText(cssStr, URI);
//                                      }
                                var style = doc.createElement("style");
                                style.setAttribute("type", "text/css");
                                // IE is b0rken enough to require that we add the element to the doc
                                // before changing it's properties
                                var head = doc.getElementsByTagName("head")[0];
                                if(!head){ // must have a head tag
                                        console.debug("No head tag in document, aborting styles");
                                        return; //      HTMLStyleElement
                                }else{
                                        head.appendChild(style);
                                }
                                if(style.styleSheet){// IE
                                        var setFunc = function(){
                                                try{
                                                        style.styleSheet.cssText = cssStr;
                                                }catch(e){ dojo.debug(e); }
                                        };
                                        if(style.styleSheet.disabled){
                                                setTimeout(setFunc, 10);
                                        }else{
                                                setFunc();
                                        }
                                }else{ // w3c
                                        var cssText = doc.createTextNode(cssStr);
                                        style.appendChild(cssText);
                                }
                                return style;   //      HTMLStyleElement
                        }
                        insertCssText(lineFixingStyles, this.editor.document);
                        this.editor.document.__INSERTED_EDITIOR_NEWLINE_CSS = true;
                        // this.regularPsToSingleLinePs(this.editNode);
                        return d;
                }
        },
        regularPsToSingleLinePs: function(element, noWhiteSpaceInEmptyP){
                function wrapLinesInPs(el){
                  // move "lines" of top-level text nodes into ps
                        function wrapNodes(nodes){
                                // nodes are assumed to all be siblings
                                var newP = nodes[0].ownerDocument.createElement('p'); // FIXME: not very idiomatic
                                nodes[0].parentNode.insertBefore(newP, nodes[0]);
                                for(var i=0; i<nodes.length; i++){
                                        newP.appendChild(nodes[i]);
                                }
                        }

                        var currentNodeIndex = 0;
                        var nodesInLine = [];
                        var currentNode;
                        while(currentNodeIndex < el.childNodes.length){
                                currentNode = el.childNodes[currentNodeIndex];
                                if( (currentNode.nodeName!='BR') &&
                                        (currentNode.nodeType==1) &&
                                        (dojo.style(currentNode, "display")!="block")
                                ){
                                        nodesInLine.push(currentNode);
                                }else{
                                        // hit line delimiter; process nodesInLine if there are any
                                        var nextCurrentNode = currentNode.nextSibling;
                                        if(nodesInLine.length){
                                                wrapNodes(nodesInLine);
                                                currentNodeIndex = (currentNodeIndex+1)-nodesInLine.length;
                                                if(currentNode.nodeName=="BR"){
                                                        dojo._destroyElement(currentNode);
                                                }
                                        }
                                        nodesInLine = [];
                                }
                                currentNodeIndex++;
                        }
                        if(nodesInLine.length){ wrapNodes(nodesInLine); }
                }

                function splitP(el){
                        // split a paragraph into seperate paragraphs at BRs
                        var currentNode = null;
                        var trailingNodes = [];
                        var lastNodeIndex = el.childNodes.length-1;
                        for(var i=lastNodeIndex; i>=0; i--){
                                currentNode = el.childNodes[i];
                                if(currentNode.nodeName=="BR"){
                                        var newP = currentNode.ownerDocument.createElement('p');
                                        dojo.place(newP, el, "after");
                                        if (trailingNodes.length==0 && i != lastNodeIndex) {
                                                newP.innerHTML = "&nbsp;"
                                        }
                                        dojo.forEach(trailingNodes, function(node){
                                                newP.appendChild(node);
                                        });
                                        dojo._destroyElement(currentNode);
                                        trailingNodes = [];
                                }else{
                                        trailingNodes.unshift(currentNode);
                                }
                        }
                }

                var pList = [];
                var ps = element.getElementsByTagName('p');
                dojo.forEach(ps, function(p){ pList.push(p); });
                dojo.forEach(pList, function(p){
                        if(     (p.previousSibling) &&
                                (p.previousSibling.nodeName == 'P' || dojo.style(p.previousSibling, 'display') != 'block')
                        ){
                                var newP = p.parentNode.insertBefore(this.document.createElement('p'), p);
                                // this is essential to prevent IE from losing the P.
                                // if it's going to be innerHTML'd later we need
                                // to add the &nbsp; to _really_ force the issue
                                newP.innerHTML = noWhiteSpaceInEmptyP ? "" : "&nbsp;";
                        }
                        splitP(p);
          },this.editor);
                wrapLinesInPs(element);
                return element;
        },

        singleLinePsToRegularPs: function(element){
                function getParagraphParents(node){
                        var ps = node.getElementsByTagName('p');
                        var parents = [];
                        for(var i=0; i<ps.length; i++){
                                var p = ps[i];
                                var knownParent = false;
                                for(var k=0; k < parents.length; k++){
                                        if(parents[k] === p.parentNode){
                                                knownParent = true;
                                                break;
                                        }
                                }
                                if(!knownParent){
                                        parents.push(p.parentNode);
                                }
                        }
                        return parents;
                }

                function isParagraphDelimiter(node){
                        if(node.nodeType != 1 || node.tagName != 'P'){
                                return (dojo.style(node, 'display') == 'block');
                        }else{
                                if(!node.childNodes.length || node.innerHTML=="&nbsp;"){ return true }
                                //return node.innerHTML.match(/^(<br\ ?\/?>| |\&nbsp\;)$/i);
                        }
                }

                var paragraphContainers = getParagraphParents(element);
                for(var i=0; i<paragraphContainers.length; i++){
                        var container = paragraphContainers[i];
                        var firstPInBlock = null;
                        var node = container.firstChild;
                        var deleteNode = null;
                        while(node){
                                if(node.nodeType != "1" || node.tagName != 'P'){
                                        firstPInBlock = null;
                                }else if (isParagraphDelimiter(node)){
                                        deleteNode = node;
                                        firstPInBlock = null;
                                }else{
                                        if(firstPInBlock == null){
                                                firstPInBlock = node;
                                        }else{
                                                if( (!firstPInBlock.lastChild || firstPInBlock.lastChild.nodeName != 'BR') &&
                                                        (node.firstChild) &&
                                                        (node.firstChild.nodeName != 'BR')
                                                ){
                                                        firstPInBlock.appendChild(this.editor.document.createElement('br'));
                                                }
                                                while(node.firstChild){
                                                        firstPInBlock.appendChild(node.firstChild);
                                                }
                                                deleteNode = node;
                                        }
                                }
                                node = node.nextSibling;
                                if(deleteNode){
                                        dojo._destroyElement(deleteNode);
                                        deleteNode = null;
                                }
                        }
                }
                return element;
        }
});

}