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/**
* plugin.js
*
* Copyright, Moxiecode Systems AB
* Released under LGPL License.
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*/
/*jshint loopfunc:true */
/*eslint no-loop-func:0 */
/*global tinymce:true */
tinymce.PluginManager.add('noneditable', function(editor) {
var TreeWalker = tinymce.dom.TreeWalker;
var externalName = 'contenteditable', internalName = 'data-mce-' + externalName;
var VK = tinymce.util.VK;
// Returns the content editable state of a node "true/false" or null
function getContentEditable(node) {
var contentEditable;
// Ignore non elements
if (node.nodeType === 1) {
// Check for fake content editable
contentEditable = node.getAttribute(internalName);
if (contentEditable && contentEditable !== "inherit") {
return contentEditable;
}
// Check for real content editable
contentEditable = node.contentEditable;
if (contentEditable !== "inherit") {
return contentEditable;
}
}
return null;
}
// Returns the noneditable parent or null if there is a editable before it or if it wasn't found
function getNonEditableParent(node) {
var state;
while (node) {
state = getContentEditable(node);
if (state) {
return state === "false" ? node : null;
}
node = node.parentNode;
}
}
function handleContentEditableSelection() {
var dom = editor.dom, selection = editor.selection, caretContainerId = 'mce_noneditablecaret', invisibleChar = '\uFEFF';
// Get caret container parent for the specified node
function getParentCaretContainer(node) {
while (node) {
if (node.id === caretContainerId) {
return node;
}
node = node.parentNode;
}
}
// Finds the first text node in the specified node
function findFirstTextNode(node) {
var walker;
if (node) {
walker = new TreeWalker(node, node);
for (node = walker.current(); node; node = walker.next()) {
if (node.nodeType === 3) {
return node;
}
}
}
}
// Insert caret container before/after target or expand selection to include block
function insertCaretContainerOrExpandToBlock(target, before) {
var caretContainer, rng;
// Select block
if (getContentEditable(target) === "false") {
if (dom.isBlock(target)) {
selection.select(target);
return;
}
}
rng = dom.createRng();
if (getContentEditable(target) === "true") {
if (!target.firstChild) {
target.appendChild(editor.getDoc().createTextNode('\u00a0'));
}
target = target.firstChild;
before = true;
}
/*
caretContainer = dom.create('span', {
id: caretContainerId,
'data-mce-bogus': true,
style:'border: 1px solid red'
}, invisibleChar);
*/
caretContainer = dom.create('span', {id: caretContainerId, 'data-mce-bogus': true}, invisibleChar);
if (before) {
target.parentNode.insertBefore(caretContainer, target);
} else {
dom.insertAfter(caretContainer, target);
}
rng.setStart(caretContainer.firstChild, 1);
rng.collapse(true);
selection.setRng(rng);
return caretContainer;
}
// Removes any caret container except the one we might be in
function removeCaretContainer(caretContainer) {
var rng, child, currentCaretContainer, lastContainer;
if (caretContainer) {
rng = selection.getRng(true);
rng.setStartBefore(caretContainer);
rng.setEndBefore(caretContainer);
child = findFirstTextNode(caretContainer);
if (child && child.nodeValue.charAt(0) == invisibleChar) {
child = child.deleteData(0, 1);
}
dom.remove(caretContainer, true);
selection.setRng(rng);
} else {
currentCaretContainer = getParentCaretContainer(selection.getStart());
while ((caretContainer = dom.get(caretContainerId)) && caretContainer !== lastContainer) {
if (currentCaretContainer !== caretContainer) {
child = findFirstTextNode(caretContainer);
if (child && child.nodeValue.charAt(0) == invisibleChar) {
child = child.deleteData(0, 1);
}
dom.remove(caretContainer, true);
}
lastContainer = caretContainer;
}
}
}
// Modifies the selection to include contentEditable false elements or insert caret containers
function moveSelection() {
var nonEditableStart, nonEditableEnd, isCollapsed, rng, element;
// Checks if there is any contents to the left/right side of caret returns the noneditable element or
// any editable element if it finds one inside
function hasSideContent(element, left) {
var container, offset, walker, node, len;
container = rng.startContainer;
offset = rng.startOffset;
// If endpoint is in middle of text node then expand to beginning/end of element
if (container.nodeType == 3) {
len = container.nodeValue.length;
if ((offset > 0 && offset < len) || (left ? offset == len : offset === 0)) {
return;
}
} else {
// Can we resolve the node by index
if (offset < container.childNodes.length) {
// Browser represents caret position as the offset at the start of an element. When moving right
// this is the element we are moving into so we consider our container to be child node at offset-1
var pos = !left && offset > 0 ? offset - 1 : offset;
container = container.childNodes[pos];
if (container.hasChildNodes()) {
container = container.firstChild;
}
} else {
// If not then the caret is at the last position in it's container and the caret container
// should be inserted after the noneditable element
return !left ? element : null;
}
}
// Walk left/right to look for contents
walker = new TreeWalker(container, element);
while ((node = walker[left ? 'prev' : 'next']())) {
if (node.nodeType === 3 && node.nodeValue.length > 0) {
return;
} else if (getContentEditable(node) === "true") {
// Found contentEditable=true element return this one to we can move the caret inside it
return node;
}
}
return element;
}
// Remove any existing caret containers
removeCaretContainer();
// Get noneditable start/end elements
isCollapsed = selection.isCollapsed();
nonEditableStart = getNonEditableParent(selection.getStart());
nonEditableEnd = getNonEditableParent(selection.getEnd());
// Is any fo the range endpoints noneditable
if (nonEditableStart || nonEditableEnd) {
rng = selection.getRng(true);
// If it's a caret selection then look left/right to see if we need to move the caret out side or expand
if (isCollapsed) {
nonEditableStart = nonEditableStart || nonEditableEnd;
if ((element = hasSideContent(nonEditableStart, true))) {
// We have no contents to the left of the caret then insert a caret container before the noneditable element
insertCaretContainerOrExpandToBlock(element, true);
} else if ((element = hasSideContent(nonEditableStart, false))) {
// We have no contents to the right of the caret then insert a caret container after the noneditable element
insertCaretContainerOrExpandToBlock(element, false);
} else {
// We are in the middle of a noneditable so expand to select it
selection.select(nonEditableStart);
}
} else {
rng = selection.getRng(true);
// Expand selection to include start non editable element
if (nonEditableStart) {
rng.setStartBefore(nonEditableStart);
}
// Expand selection to include end non editable element
if (nonEditableEnd) {
rng.setEndAfter(nonEditableEnd);
}
selection.setRng(rng);
}
}
}
function handleKey(e) {
var keyCode = e.keyCode, nonEditableParent, caretContainer, startElement, endElement;
function getNonEmptyTextNodeSibling(node, prev) {
while ((node = node[prev ? 'previousSibling' : 'nextSibling'])) {
if (node.nodeType !== 3 || node.nodeValue.length > 0) {
return node;
}
}
}
function positionCaretOnElement(element, start) {
selection.select(element);
selection.collapse(start);
}
function canDelete(backspace) {
var rng, container, offset, nonEditableParent;
function removeNodeIfNotParent(node) {
var parent = container;
while (parent) {
if (parent === node) {
return;
}
parent = parent.parentNode;
}
dom.remove(node);
moveSelection();
}
function isNextPrevTreeNodeNonEditable() {
var node, walker, nonEmptyElements = editor.schema.getNonEmptyElements();
walker = new tinymce.dom.TreeWalker(container, editor.getBody());
while ((node = (backspace ? walker.prev() : walker.next()))) {
// Found IMG/INPUT etc
if (nonEmptyElements[node.nodeName.toLowerCase()]) {
break;
}
// Found text node with contents
if (node.nodeType === 3 && tinymce.trim(node.nodeValue).length > 0) {
break;
}
// Found non editable node
if (getContentEditable(node) === "false") {
removeNodeIfNotParent(node);
return true;
}
}
// Check if the content node is within a non editable parent
if (getNonEditableParent(node)) {
return true;
}
return false;
}
if (selection.isCollapsed()) {
rng = selection.getRng(true);
container = rng.startContainer;
offset = rng.startOffset;
container = getParentCaretContainer(container) || container;
// Is in noneditable parent
if ((nonEditableParent = getNonEditableParent(container))) {
removeNodeIfNotParent(nonEditableParent);
return false;
}
// Check if the caret is in the middle of a text node
if (container.nodeType == 3 && (backspace ? offset > 0 : offset < container.nodeValue.length)) {
return true;
}
// Resolve container index
if (container.nodeType == 1) {
container = container.childNodes[offset] || container;
}
// Check if previous or next tree node is non editable then block the event
if (isNextPrevTreeNodeNonEditable()) {
return false;
}
}
return true;
}
startElement = selection.getStart();
endElement = selection.getEnd();
// Disable all key presses in contentEditable=false except delete or backspace
nonEditableParent = getNonEditableParent(startElement) || getNonEditableParent(endElement);
if (nonEditableParent && (keyCode < 112 || keyCode > 124) && keyCode != VK.DELETE && keyCode != VK.BACKSPACE) {
// Is Ctrl+c, Ctrl+v or Ctrl+x then use default browser behavior
if ((tinymce.isMac ? e.metaKey : e.ctrlKey) && (keyCode == 67 || keyCode == 88 || keyCode == 86)) {
return;
}
e.preventDefault();
// Arrow left/right select the element and collapse left/right
if (keyCode == VK.LEFT || keyCode == VK.RIGHT) {
var left = keyCode == VK.LEFT;
// If a block element find previous or next element to position the caret
if (editor.dom.isBlock(nonEditableParent)) {
var targetElement = left ? nonEditableParent.previousSibling : nonEditableParent.nextSibling;
var walker = new TreeWalker(targetElement, targetElement);
var caretElement = left ? walker.prev() : walker.next();
positionCaretOnElement(caretElement, !left);
} else {
positionCaretOnElement(nonEditableParent, left);
}
}
} else {
// Is arrow left/right, backspace or delete
if (keyCode == VK.LEFT || keyCode == VK.RIGHT || keyCode == VK.BACKSPACE || keyCode == VK.DELETE) {
caretContainer = getParentCaretContainer(startElement);
if (caretContainer) {
// Arrow left or backspace
if (keyCode == VK.LEFT || keyCode == VK.BACKSPACE) {
nonEditableParent = getNonEmptyTextNodeSibling(caretContainer, true);
if (nonEditableParent && getContentEditable(nonEditableParent) === "false") {
e.preventDefault();
if (keyCode == VK.LEFT) {
positionCaretOnElement(nonEditableParent, true);
} else {
dom.remove(nonEditableParent);
return;
}
} else {
removeCaretContainer(caretContainer);
}
}
// Arrow right or delete
if (keyCode == VK.RIGHT || keyCode == VK.DELETE) {
nonEditableParent = getNonEmptyTextNodeSibling(caretContainer);
if (nonEditableParent && getContentEditable(nonEditableParent) === "false") {
e.preventDefault();
if (keyCode == VK.RIGHT) {
positionCaretOnElement(nonEditableParent, false);
} else {
dom.remove(nonEditableParent);
return;
}
} else {
removeCaretContainer(caretContainer);
}
}
}
if ((keyCode == VK.BACKSPACE || keyCode == VK.DELETE) && !canDelete(keyCode == VK.BACKSPACE)) {
e.preventDefault();
return false;
}
}
}
}
editor.on('mousedown', function(e) {
var node = editor.selection.getNode();
if (getContentEditable(node) === "false" && node == e.target) {
// Expand selection on mouse down we can't block the default event since it's used for drag/drop
moveSelection();
}
});
editor.on('mouseup keyup', moveSelection);
editor.on('keydown', handleKey);
}
var editClass, nonEditClass, nonEditableRegExps;
// Converts configured regexps to noneditable span items
function convertRegExpsToNonEditable(e) {
var i = nonEditableRegExps.length, content = e.content, cls = tinymce.trim(nonEditClass);
// Don't replace the variables when raw is used for example on undo/redo
if (e.format == "raw") {
return;
}
while (i--) {
content = content.replace(nonEditableRegExps[i], function(match) {
var args = arguments, index = args[args.length - 2];
// Is value inside an attribute then don't replace
if (index > 0 && content.charAt(index - 1) == '"') {
return match;
}
return (
'<span class="' + cls + '" data-mce-content="' + editor.dom.encode(args[0]) + '">' +
editor.dom.encode(typeof(args[1]) === "string" ? args[1] : args[0]) + '</span>'
);
});
}
e.content = content;
}
editClass = " " + tinymce.trim(editor.getParam("noneditable_editable_class", "mceEditable")) + " ";
nonEditClass = " " + tinymce.trim(editor.getParam("noneditable_noneditable_class", "mceNonEditable")) + " ";
// Setup noneditable regexps array
nonEditableRegExps = editor.getParam("noneditable_regexp");
if (nonEditableRegExps && !nonEditableRegExps.length) {
nonEditableRegExps = [nonEditableRegExps];
}
editor.on('PreInit', function() {
handleContentEditableSelection();
if (nonEditableRegExps) {
editor.on('BeforeSetContent', convertRegExpsToNonEditable);
}
// Apply contentEditable true/false on elements with the noneditable/editable classes
editor.parser.addAttributeFilter('class', function(nodes) {
var i = nodes.length, className, node;
while (i--) {
node = nodes[i];
className = " " + node.attr("class") + " ";
if (className.indexOf(editClass) !== -1) {
node.attr(internalName, "true");
} else if (className.indexOf(nonEditClass) !== -1) {
node.attr(internalName, "false");
}
}
});
// Remove internal name
editor.serializer.addAttributeFilter(internalName, function(nodes) {
var i = nodes.length, node;
while (i--) {
node = nodes[i];
if (nonEditableRegExps && node.attr('data-mce-content')) {
node.name = "#text";
node.type = 3;
node.raw = true;
node.value = node.attr('data-mce-content');
} else {
node.attr(externalName, null);
node.attr(internalName, null);
}
}
});
// Convert external name into internal name
editor.parser.addAttributeFilter(externalName, function(nodes) {
var i = nodes.length, node;
while (i--) {
node = nodes[i];
node.attr(internalName, node.attr(externalName));
node.attr(externalName, null);
}
});
});
editor.on('drop', function(e) {
if (getNonEditableParent(e.target)) {
e.preventDefault();
}
});
});