mirror of https://github.com/friendica/friendica
540 lines
17 KiB
JavaScript
540 lines
17 KiB
JavaScript
/**
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* editor_plugin_src.js
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*
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* Copyright 2009, Moxiecode Systems AB
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* Released under LGPL License.
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*
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* License: http://tinymce.moxiecode.com/license
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* Contributing: http://tinymce.moxiecode.com/contributing
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*/
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(function() {
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var TreeWalker = tinymce.dom.TreeWalker;
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var externalName = 'contenteditable', internalName = 'data-mce-' + externalName;
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var VK = tinymce.VK;
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function handleContentEditableSelection(ed) {
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var dom = ed.dom, selection = ed.selection, invisibleChar, caretContainerId = 'mce_noneditablecaret';
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// Setup invisible character use zero width space on Gecko since it doesn't change the height of the container
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invisibleChar = tinymce.isGecko ? '\u200B' : '\uFEFF';
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// Returns the content editable state of a node "true/false" or null
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function getContentEditable(node) {
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var contentEditable;
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// Ignore non elements
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if (node.nodeType === 1) {
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// Check for fake content editable
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contentEditable = node.getAttribute(internalName);
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if (contentEditable && contentEditable !== "inherit") {
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return contentEditable;
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}
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// Check for real content editable
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contentEditable = node.contentEditable;
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if (contentEditable !== "inherit") {
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return contentEditable;
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}
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}
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return null;
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};
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// Returns the noneditable parent or null if there is a editable before it or if it wasn't found
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function getNonEditableParent(node) {
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var state;
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while (node) {
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state = getContentEditable(node);
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if (state) {
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return state === "false" ? node : null;
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}
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node = node.parentNode;
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}
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};
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// Get caret container parent for the specified node
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function getParentCaretContainer(node) {
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while (node) {
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if (node.id === caretContainerId) {
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return node;
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}
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node = node.parentNode;
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}
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};
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// Finds the first text node in the specified node
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function findFirstTextNode(node) {
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var walker;
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if (node) {
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walker = new TreeWalker(node, node);
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for (node = walker.current(); node; node = walker.next()) {
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if (node.nodeType === 3) {
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return node;
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}
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}
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}
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};
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// Insert caret container before/after target or expand selection to include block
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function insertCaretContainerOrExpandToBlock(target, before) {
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var caretContainer, rng;
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// Select block
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if (getContentEditable(target) === "false") {
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if (dom.isBlock(target)) {
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selection.select(target);
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return;
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}
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}
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rng = dom.createRng();
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if (getContentEditable(target) === "true") {
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if (!target.firstChild) {
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target.appendChild(ed.getDoc().createTextNode('\u00a0'));
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}
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target = target.firstChild;
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before = true;
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}
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//caretContainer = dom.create('span', {id: caretContainerId, 'data-mce-bogus': true, style:'border: 1px solid red'}, invisibleChar);
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caretContainer = dom.create('span', {id: caretContainerId, 'data-mce-bogus': true}, invisibleChar);
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if (before) {
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target.parentNode.insertBefore(caretContainer, target);
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} else {
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dom.insertAfter(caretContainer, target);
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}
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rng.setStart(caretContainer.firstChild, 1);
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rng.collapse(true);
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selection.setRng(rng);
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return caretContainer;
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};
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// Removes any caret container except the one we might be in
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function removeCaretContainer(caretContainer) {
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var child, currentCaretContainer, lastContainer;
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if (caretContainer) {
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rng = selection.getRng(true);
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rng.setStartBefore(caretContainer);
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rng.setEndBefore(caretContainer);
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child = findFirstTextNode(caretContainer);
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if (child && child.nodeValue.charAt(0) == invisibleChar) {
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child = child.deleteData(0, 1);
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}
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dom.remove(caretContainer, true);
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selection.setRng(rng);
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} else {
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currentCaretContainer = getParentCaretContainer(selection.getStart());
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while ((caretContainer = dom.get(caretContainerId)) && caretContainer !== lastContainer) {
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if (currentCaretContainer !== caretContainer) {
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child = findFirstTextNode(caretContainer);
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if (child && child.nodeValue.charAt(0) == invisibleChar) {
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child = child.deleteData(0, 1);
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}
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dom.remove(caretContainer, true);
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}
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lastContainer = caretContainer;
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}
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}
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};
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// Modifies the selection to include contentEditable false elements or insert caret containers
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function moveSelection() {
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var nonEditableStart, nonEditableEnd, isCollapsed, rng, element;
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// 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
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function hasSideContent(element, left) {
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var container, offset, walker, node, len;
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container = rng.startContainer;
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offset = rng.startOffset;
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// If endpoint is in middle of text node then expand to beginning/end of element
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if (container.nodeType == 3) {
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len = container.nodeValue.length;
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if ((offset > 0 && offset < len) || (left ? offset == len : offset == 0)) {
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return;
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}
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} else {
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// Can we resolve the node by index
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if (offset < container.childNodes.length) {
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// Browser represents caret position as the offset at the start of an element. When moving right
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// this is the element we are moving into so we consider our container to be child node at offset-1
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var pos = !left && offset > 0 ? offset-1 : offset;
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container = container.childNodes[pos];
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if (container.hasChildNodes()) {
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container = container.firstChild;
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}
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} else {
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// 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
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return !left ? element : null;
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}
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}
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// Walk left/right to look for contents
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walker = new TreeWalker(container, element);
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while (node = walker[left ? 'prev' : 'next']()) {
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if (node.nodeType === 3 && node.nodeValue.length > 0) {
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return;
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} else if (getContentEditable(node) === "true") {
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// Found contentEditable=true element return this one to we can move the caret inside it
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return node;
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}
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}
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return element;
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};
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// Remove any existing caret containers
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removeCaretContainer();
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// Get noneditable start/end elements
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isCollapsed = selection.isCollapsed();
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nonEditableStart = getNonEditableParent(selection.getStart());
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nonEditableEnd = getNonEditableParent(selection.getEnd());
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// Is any fo the range endpoints noneditable
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if (nonEditableStart || nonEditableEnd) {
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rng = selection.getRng(true);
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// If it's a caret selection then look left/right to see if we need to move the caret out side or expand
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if (isCollapsed) {
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nonEditableStart = nonEditableStart || nonEditableEnd;
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var start = selection.getStart();
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if (element = hasSideContent(nonEditableStart, true)) {
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// We have no contents to the left of the caret then insert a caret container before the noneditable element
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insertCaretContainerOrExpandToBlock(element, true);
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} else if (element = hasSideContent(nonEditableStart, false)) {
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// We have no contents to the right of the caret then insert a caret container after the noneditable element
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insertCaretContainerOrExpandToBlock(element, false);
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} else {
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// We are in the middle of a noneditable so expand to select it
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selection.select(nonEditableStart);
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}
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} else {
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rng = selection.getRng(true);
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// Expand selection to include start non editable element
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if (nonEditableStart) {
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rng.setStartBefore(nonEditableStart);
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}
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// Expand selection to include end non editable element
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if (nonEditableEnd) {
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rng.setEndAfter(nonEditableEnd);
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}
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selection.setRng(rng);
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}
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}
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};
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function handleKey(ed, e) {
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var keyCode = e.keyCode, nonEditableParent, caretContainer, startElement, endElement;
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function getNonEmptyTextNodeSibling(node, prev) {
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while (node = node[prev ? 'previousSibling' : 'nextSibling']) {
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if (node.nodeType !== 3 || node.nodeValue.length > 0) {
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return node;
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}
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}
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};
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function positionCaretOnElement(element, start) {
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selection.select(element);
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selection.collapse(start);
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}
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function canDelete(backspace) {
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var rng, container, offset, nonEditableParent;
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function removeNodeIfNotParent(node) {
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var parent = container;
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while (parent) {
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if (parent === node) {
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return;
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}
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parent = parent.parentNode;
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}
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dom.remove(node);
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moveSelection();
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}
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function isNextPrevTreeNodeNonEditable() {
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var node, walker, nonEmptyElements = ed.schema.getNonEmptyElements();
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walker = new tinymce.dom.TreeWalker(container, ed.getBody());
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while (node = (backspace ? walker.prev() : walker.next())) {
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// Found IMG/INPUT etc
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if (nonEmptyElements[node.nodeName.toLowerCase()]) {
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break;
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}
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// Found text node with contents
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if (node.nodeType === 3 && tinymce.trim(node.nodeValue).length > 0) {
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break;
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}
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// Found non editable node
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if (getContentEditable(node) === "false") {
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removeNodeIfNotParent(node);
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return true;
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}
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}
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// Check if the content node is within a non editable parent
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if (getNonEditableParent(node)) {
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return true;
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}
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return false;
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}
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if (selection.isCollapsed()) {
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rng = selection.getRng(true);
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container = rng.startContainer;
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offset = rng.startOffset;
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container = getParentCaretContainer(container) || container;
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// Is in noneditable parent
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if (nonEditableParent = getNonEditableParent(container)) {
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removeNodeIfNotParent(nonEditableParent);
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return false;
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}
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// Check if the caret is in the middle of a text node
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if (container.nodeType == 3 && (backspace ? offset > 0 : offset < container.nodeValue.length)) {
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return true;
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}
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// Resolve container index
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if (container.nodeType == 1) {
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container = container.childNodes[offset] || container;
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}
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// Check if previous or next tree node is non editable then block the event
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if (isNextPrevTreeNodeNonEditable()) {
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return false;
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}
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}
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return true;
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}
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startElement = selection.getStart()
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endElement = selection.getEnd();
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// Disable all key presses in contentEditable=false except delete or backspace
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nonEditableParent = getNonEditableParent(startElement) || getNonEditableParent(endElement);
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if (nonEditableParent && (keyCode < 112 || keyCode > 124) && keyCode != VK.DELETE && keyCode != VK.BACKSPACE) {
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// Is Ctrl+c, Ctrl+v or Ctrl+x then use default browser behavior
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if ((tinymce.isMac ? e.metaKey : e.ctrlKey) && (keyCode == 67 || keyCode == 88 || keyCode == 86)) {
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return;
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}
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e.preventDefault();
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// Arrow left/right select the element and collapse left/right
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if (keyCode == VK.LEFT || keyCode == VK.RIGHT) {
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var left = keyCode == VK.LEFT;
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// If a block element find previous or next element to position the caret
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if (ed.dom.isBlock(nonEditableParent)) {
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var targetElement = left ? nonEditableParent.previousSibling : nonEditableParent.nextSibling;
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var walker = new TreeWalker(targetElement, targetElement);
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var caretElement = left ? walker.prev() : walker.next();
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positionCaretOnElement(caretElement, !left);
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} else {
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positionCaretOnElement(nonEditableParent, left);
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}
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}
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} else {
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// Is arrow left/right, backspace or delete
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if (keyCode == VK.LEFT || keyCode == VK.RIGHT || keyCode == VK.BACKSPACE || keyCode == VK.DELETE) {
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caretContainer = getParentCaretContainer(startElement);
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if (caretContainer) {
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// Arrow left or backspace
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if (keyCode == VK.LEFT || keyCode == VK.BACKSPACE) {
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nonEditableParent = getNonEmptyTextNodeSibling(caretContainer, true);
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if (nonEditableParent && getContentEditable(nonEditableParent) === "false") {
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e.preventDefault();
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if (keyCode == VK.LEFT) {
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positionCaretOnElement(nonEditableParent, true);
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} else {
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dom.remove(nonEditableParent);
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return;
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}
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} else {
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removeCaretContainer(caretContainer);
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}
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}
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// Arrow right or delete
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if (keyCode == VK.RIGHT || keyCode == VK.DELETE) {
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nonEditableParent = getNonEmptyTextNodeSibling(caretContainer);
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if (nonEditableParent && getContentEditable(nonEditableParent) === "false") {
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e.preventDefault();
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if (keyCode == VK.RIGHT) {
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positionCaretOnElement(nonEditableParent, false);
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} else {
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dom.remove(nonEditableParent);
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return;
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}
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} else {
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removeCaretContainer(caretContainer);
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}
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}
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}
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if ((keyCode == VK.BACKSPACE || keyCode == VK.DELETE) && !canDelete(keyCode == VK.BACKSPACE)) {
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e.preventDefault();
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return false;
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}
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}
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}
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};
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ed.onMouseDown.addToTop(function(ed, e) {
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var node = ed.selection.getNode();
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if (getContentEditable(node) === "false" && node == e.target) {
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// Expand selection on mouse down we can't block the default event since it's used for drag/drop
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moveSelection();
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}
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});
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ed.onMouseUp.addToTop(moveSelection);
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ed.onKeyDown.addToTop(handleKey);
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ed.onKeyUp.addToTop(moveSelection);
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};
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tinymce.create('tinymce.plugins.NonEditablePlugin', {
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init : function(ed, url) {
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var editClass, nonEditClass, nonEditableRegExps;
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// Converts configured regexps to noneditable span items
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function convertRegExpsToNonEditable(ed, args) {
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var i = nonEditableRegExps.length, content = args.content, cls = tinymce.trim(nonEditClass);
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// Don't replace the variables when raw is used for example on undo/redo
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if (args.format == "raw") {
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return;
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}
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while (i--) {
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content = content.replace(nonEditableRegExps[i], function(match) {
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var args = arguments, index = args[args.length - 2];
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// Is value inside an attribute then don't replace
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if (index > 0 && content.charAt(index - 1) == '"') {
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return match;
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}
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return '<span class="' + cls + '" data-mce-content="' + ed.dom.encode(args[0]) + '">' + ed.dom.encode(typeof(args[1]) === "string" ? args[1] : args[0]) + '</span>';
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});
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}
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args.content = content;
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};
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editClass = " " + tinymce.trim(ed.getParam("noneditable_editable_class", "mceEditable")) + " ";
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nonEditClass = " " + tinymce.trim(ed.getParam("noneditable_noneditable_class", "mceNonEditable")) + " ";
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// Setup noneditable regexps array
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nonEditableRegExps = ed.getParam("noneditable_regexp");
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if (nonEditableRegExps && !nonEditableRegExps.length) {
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nonEditableRegExps = [nonEditableRegExps];
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}
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ed.onPreInit.add(function() {
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handleContentEditableSelection(ed);
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if (nonEditableRegExps) {
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ed.selection.onBeforeSetContent.add(convertRegExpsToNonEditable);
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ed.onBeforeSetContent.add(convertRegExpsToNonEditable);
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}
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// Apply contentEditable true/false on elements with the noneditable/editable classes
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ed.parser.addAttributeFilter('class', function(nodes) {
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var i = nodes.length, className, node;
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while (i--) {
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node = nodes[i];
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className = " " + node.attr("class") + " ";
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if (className.indexOf(editClass) !== -1) {
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node.attr(internalName, "true");
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} else if (className.indexOf(nonEditClass) !== -1) {
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node.attr(internalName, "false");
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}
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}
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});
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// Remove internal name
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ed.serializer.addAttributeFilter(internalName, function(nodes, name) {
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var i = nodes.length, node;
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while (i--) {
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node = nodes[i];
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if (nonEditableRegExps && node.attr('data-mce-content')) {
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node.name = "#text";
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node.type = 3;
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node.raw = true;
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node.value = node.attr('data-mce-content');
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} else {
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node.attr(externalName, null);
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node.attr(internalName, null);
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}
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}
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});
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// Convert external name into internal name
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ed.parser.addAttributeFilter(externalName, function(nodes, name) {
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var i = nodes.length, node;
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while (i--) {
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node = nodes[i];
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node.attr(internalName, node.attr(externalName));
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node.attr(externalName, null);
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}
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});
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});
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},
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getInfo : function() {
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return {
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longname : 'Non editable elements',
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author : 'Moxiecode Systems AB',
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authorurl : 'http://tinymce.moxiecode.com',
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infourl : 'http://wiki.moxiecode.com/index.php/TinyMCE:Plugins/noneditable',
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version : tinymce.majorVersion + "." + tinymce.minorVersion
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};
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}
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});
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// Register plugin
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tinymce.PluginManager.add('noneditable', tinymce.plugins.NonEditablePlugin);
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})(); |