- Author:
- David Nickerson <nickerso@users.sourceforge.net>
- Date:
- 2010-05-04 12:37:19+12:00
- Desc:
- adding initial version of SED-ML L1V1 file reproducing what is in graphs/BR-INa-variants.xml
- Permanent Source URI:
- https://models.cellml.org/workspace/a1/rawfile/a80b964384c0c7683d7c5d07b73a5af7a973d46c/dojo-presentation/js/dojo/dijit/_editor/plugins/EnterKeyHandling.js
dojo.provide("dijit._editor.plugins.EnterKeyHandling");
dojo.declare("dijit._editor.plugins.EnterKeyHandling", dijit._editor._Plugin, {
// summary: this plugin tries to handle enter key events to make all
// browsers have identical behaviors.
// 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, 0, h); //enter
editor.addKeyHandler(13, 0, 1, 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)){
var liparent=dojo.withGlobal(this.editor.window, 'getAncestorElement', dijit._editor.selection, ['LI']);
if(!liparent){
//circulate the undo detection code by calling RichText::execCommand directly
dijit._editor.RichText.prototype.execCommand.call(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'); //FIXME
}
}else{
if(dojo.isMoz){
if(liparent.parentNode.parentNode.nodeName=='LI'){
liparent=liparent.parentNode.parentNode;
}
}
var fc=liparent.firstChild;
if(fc && fc.nodeType==1 && (fc.nodeName=='UL' || fc.nodeName=='OL')){
liparent.insertBefore(fc.ownerDocument.createTextNode('\xA0'),fc);
var newrange = dijit.range.create();
newrange.setStart(liparent.firstChild,0);
var selection = dijit.range.getSelection(this.editor.window,true)
selection.removeAllRanges();
selection.addRange(newrange);
}
}
}
this._checkListLater = false;
}
if(this._pressedEnterInBlock){
//the new created is the original current P, so we have previousSibling below
if(this._pressedEnterInBlock.previousSibling){
this.removeTrailingBr(this._pressedEnterInBlock.previousSibling);
}
delete this._pressedEnterInBlock;
}
},
bogusHtmlContent: ' ',
blockNodes: /^(?:P|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
var selection, range, newrange, doc=this.editor.document,br;
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.blockNodes);
if(header){
if(!e.shiftKey && header.tagName=='LI'){
return true; //let brower handle
}
selection = dijit.range.getSelection(this.editor.window);
range = selection.getRangeAt(0);
if(!range.collapsed){
range.deleteContents();
}
if(dijit.range.atBeginningOfContainer(header, range.startContainer, range.startOffset)){
if(e.shiftKey){
br=doc.createElement('br');
newrange = dijit.range.create();
header.insertBefore(br,header.firstChild);
newrange.setStartBefore(br.nextSibling);
selection.removeAllRanges();
selection.addRange(newrange);
}else{
dojo.place(br, header, "before");
}
}else if(dijit.range.atEndOfContainer(header, range.startContainer, range.startOffset)){
newrange = dijit.range.create();
br=doc.createElement('br');
if(e.shiftKey){
header.appendChild(br);
header.appendChild(doc.createTextNode('\xA0'));
newrange.setStart(header.lastChild,0);
}else{
dojo.place(br, header, "after");
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
selection = dijit.range.getSelection(this.editor.window);
range = selection.getRangeAt(0);
if(!range.collapsed){
range.deleteContents();
}
var block = dijit.range.getBlockAncestor(range.endContainer, null, this.editor.editNode);
var blockNode = block.blockNode;
//if this is under a LI or the parent of the blockNode is LI, just let browser to handle it
if((this._checkListLater = (blockNode && (blockNode.nodeName == 'LI' || blockNode.parentNode.nodeName == 'LI')))){
if(dojo.isMoz){
//press enter in middle of P may leave a trailing <br/>, let's remove it later
this._pressedEnterInBlock = blockNode;
}
//if this li only contains spaces, set the content to empty so the browser will outdent this item
if(/^(?:\s| )$/.test(blockNode.innerHTML)){
blockNode.innerHTML='';
}
return true;
}
//text node directly under body, let's wrap them in a node
if(!block.blockNode || block.blockNode===this.editor.editNode){
dijit._editor.RichText.prototype.execCommand.call(this.editor, 'formatblock',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+$/g, "").length){
this.removeTrailingBr(block.blockNode);
return false;
}
}else{
block.blockNode = this.editor.editNode;
}
selection = dijit.range.getSelection(this.editor.window);
range = selection.getRangeAt(0);
}
var newblock = doc.createElement(this.blockNodeForEnter);
newblock.innerHTML=this.bogusHtmlContent;
this.removeTrailingBr(block.blockNode);
if(dijit.range.atEndOfContainer(block.blockNode, range.endContainer, range.endOffset)){
if(block.blockNode === block.blockContainer){
block.blockNode.appendChild(newblock);
}else{
dojo.place(newblock, block.blockNode, "after");
}
_letBrowserHandle = false;
//lets move caret to the newly created block
newrange = dijit.range.create();
newrange.setStart(newblock,0);
selection.removeAllRanges();
selection.addRange(newrange);
if(this.editor.height){
newblock.scrollIntoView(false);
}
}else if(dijit.range.atBeginningOfContainer(block.blockNode,
range.startContainer, range.startOffset)){
dojo.place(newblock, block.blockNode, block.blockNode === block.blockContainer ? "first" : "before");
if(newblock.nextSibling && this.editor.height){
//browser does not scroll the caret position into view, do it manually
newblock.nextSibling.scrollIntoView(false);
}
_letBrowserHandle = false;
}else{ //press enter in the middle of P
if(dojo.isMoz){
//press enter in middle of P may leave a trailing <br/>, let's remove it later
this._pressedEnterInBlock = block.blockNode;
}
}
return _letBrowserHandle;
},
removeTrailingBr: function(container){
var para = /P|DIV|LI/i.test(container.tagName) ?
container : dijit._editor.selection.getParentOfType(container,['P','DIV','LI']);
if(!para){ return; }
if(para.lastChild){
if((para.childNodes.length > 1 && para.lastChild.nodeType == 3 && /^[\s\xAD]*$/.test(para.lastChild.nodeValue)) ||
(para.lastChild && para.lastChild.tagName=='BR')){
dojo._destroyElement(para.lastChild);
}
}
if(!para.childNodes.length){
para.innerHTML=this.bogusHtmlContent;
}
},
_fixNewLineBehaviorForIE: function(d){
if(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 null; // 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 null; // HTMLStyleElement
}else{
head.appendChild(style);
}
if(style.styleSheet){// IE
var setFunc = function(){
try{
style.styleSheet.cssText = cssStr;
}catch(e){ console.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;
}
return null;
},
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]);
dojo.forEach(nodes, function(node){
newP.appendChild(node);
});
}
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 = " "
}
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 to _really_ force the issue
newP.innerHTML = noWhiteSpaceInEmptyP ? "" : " ";
}
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==" "){ return true; }
//return node.innerHTML.match(/^(<br\ ?\/?>| |\ \;)$/i);
}
return false;
}
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;
}
});
