mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
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714 lines
26 KiB
JavaScript
714 lines
26 KiB
JavaScript
/**
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* @license CSS Class Applier module for Rangy.
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* Adds, removes and toggles CSS classes on Ranges and Selections
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*
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* Part of Rangy, a cross-browser JavaScript range and selection library
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* http://code.google.com/p/rangy/
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*
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* Depends on Rangy core.
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*
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* Copyright 2011, Tim Down
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* Licensed under the MIT license.
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* Version: 1.2.2
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* Build date: 13 November 2011
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*/
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rangy.createModule("CssClassApplier", function(api, module) {
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api.requireModules( ["WrappedSelection", "WrappedRange"] );
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var dom = api.dom;
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var defaultTagName = "span";
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function trim(str) {
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return str.replace(/^\s\s*/, "").replace(/\s\s*$/, "");
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}
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function hasClass(el, cssClass) {
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return el.className && new RegExp("(?:^|\\s)" + cssClass + "(?:\\s|$)").test(el.className);
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}
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function addClass(el, cssClass) {
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if (el.className) {
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if (!hasClass(el, cssClass)) {
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el.className += " " + cssClass;
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}
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} else {
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el.className = cssClass;
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}
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}
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var removeClass = (function() {
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function replacer(matched, whiteSpaceBefore, whiteSpaceAfter) {
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return (whiteSpaceBefore && whiteSpaceAfter) ? " " : "";
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}
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return function(el, cssClass) {
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if (el.className) {
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el.className = el.className.replace(new RegExp("(?:^|\\s)" + cssClass + "(?:\\s|$)"), replacer);
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}
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};
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})();
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function sortClassName(className) {
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return className.split(/\s+/).sort().join(" ");
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}
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function getSortedClassName(el) {
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return sortClassName(el.className);
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}
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function haveSameClasses(el1, el2) {
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return getSortedClassName(el1) == getSortedClassName(el2);
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}
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function replaceWithOwnChildren(el) {
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var parent = el.parentNode;
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while (el.hasChildNodes()) {
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parent.insertBefore(el.firstChild, el);
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}
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parent.removeChild(el);
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}
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function rangeSelectsAnyText(range, textNode) {
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var textRange = range.cloneRange();
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textRange.selectNodeContents(textNode);
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var intersectionRange = textRange.intersection(range);
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var text = intersectionRange ? intersectionRange.toString() : "";
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textRange.detach();
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return text != "";
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}
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function getEffectiveTextNodes(range) {
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return range.getNodes([3], function(textNode) {
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return rangeSelectsAnyText(range, textNode);
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});
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}
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function elementsHaveSameNonClassAttributes(el1, el2) {
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if (el1.attributes.length != el2.attributes.length) return false;
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for (var i = 0, len = el1.attributes.length, attr1, attr2, name; i < len; ++i) {
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attr1 = el1.attributes[i];
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name = attr1.name;
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if (name != "class") {
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attr2 = el2.attributes.getNamedItem(name);
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if (attr1.specified != attr2.specified) return false;
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if (attr1.specified && attr1.nodeValue !== attr2.nodeValue) return false;
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}
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}
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return true;
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}
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function elementHasNonClassAttributes(el, exceptions) {
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for (var i = 0, len = el.attributes.length, attrName; i < len; ++i) {
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attrName = el.attributes[i].name;
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if ( !(exceptions && dom.arrayContains(exceptions, attrName)) && el.attributes[i].specified && attrName != "class") {
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return true;
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}
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}
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return false;
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}
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function elementHasProps(el, props) {
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for (var p in props) {
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if (props.hasOwnProperty(p) && el[p] !== props[p]) {
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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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var getComputedStyleProperty;
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if (typeof window.getComputedStyle != "undefined") {
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getComputedStyleProperty = function(el, propName) {
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return dom.getWindow(el).getComputedStyle(el, null)[propName];
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};
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} else if (typeof document.documentElement.currentStyle != "undefined") {
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getComputedStyleProperty = function(el, propName) {
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return el.currentStyle[propName];
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};
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} else {
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module.fail("No means of obtaining computed style properties found");
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}
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var isEditableElement;
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(function() {
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var testEl = document.createElement("div");
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if (typeof testEl.isContentEditable == "boolean") {
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isEditableElement = function(node) {
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return node && node.nodeType == 1 && node.isContentEditable;
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};
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} else {
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isEditableElement = function(node) {
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if (!node || node.nodeType != 1 || node.contentEditable == "false") {
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return false;
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}
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return node.contentEditable == "true" || isEditableElement(node.parentNode);
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};
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}
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})();
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function isEditingHost(node) {
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var parent;
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return node && node.nodeType == 1
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&& (( (parent = node.parentNode) && parent.nodeType == 9 && parent.designMode == "on")
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|| (isEditableElement(node) && !isEditableElement(node.parentNode)));
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}
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function isEditable(node) {
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return (isEditableElement(node) || (node.nodeType != 1 && isEditableElement(node.parentNode))) && !isEditingHost(node);
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}
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var inlineDisplayRegex = /^inline(-block|-table)?$/i;
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function isNonInlineElement(node) {
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return node && node.nodeType == 1 && !inlineDisplayRegex.test(getComputedStyleProperty(node, "display"));
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}
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// White space characters as defined by HTML 4 (http://www.w3.org/TR/html401/struct/text.html)
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var htmlNonWhiteSpaceRegex = /[^\r\n\t\f \u200B]/;
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function isUnrenderedWhiteSpaceNode(node) {
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if (node.data.length == 0) {
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return true;
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}
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if (htmlNonWhiteSpaceRegex.test(node.data)) {
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return false;
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}
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var cssWhiteSpace = getComputedStyleProperty(node.parentNode, "whiteSpace");
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switch (cssWhiteSpace) {
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case "pre":
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case "pre-wrap":
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case "-moz-pre-wrap":
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return false;
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case "pre-line":
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if (/[\r\n]/.test(node.data)) {
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return false;
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}
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}
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// We now have a whitespace-only text node that may be rendered depending on its context. If it is adjacent to a
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// non-inline element, it will not be rendered. This seems to be a good enough definition.
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return isNonInlineElement(node.previousSibling) || isNonInlineElement(node.nextSibling);
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}
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function isSplitPoint(node, offset) {
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if (dom.isCharacterDataNode(node)) {
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if (offset == 0) {
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return !!node.previousSibling;
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} else if (offset == node.length) {
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return !!node.nextSibling;
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} else {
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return true;
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}
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}
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return offset > 0 && offset < node.childNodes.length;
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}
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function splitNodeAt(node, descendantNode, descendantOffset, rangesToPreserve) {
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var newNode;
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var splitAtStart = (descendantOffset == 0);
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if (dom.isAncestorOf(descendantNode, node)) {
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return node;
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}
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if (dom.isCharacterDataNode(descendantNode)) {
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if (descendantOffset == 0) {
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descendantOffset = dom.getNodeIndex(descendantNode);
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descendantNode = descendantNode.parentNode;
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} else if (descendantOffset == descendantNode.length) {
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descendantOffset = dom.getNodeIndex(descendantNode) + 1;
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descendantNode = descendantNode.parentNode;
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} else {
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throw module.createError("splitNodeAt should not be called with offset in the middle of a data node ("
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+ descendantOffset + " in " + descendantNode.data);
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}
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}
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if (isSplitPoint(descendantNode, descendantOffset)) {
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if (!newNode) {
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newNode = descendantNode.cloneNode(false);
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if (newNode.id) {
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newNode.removeAttribute("id");
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}
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var child;
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while ((child = descendantNode.childNodes[descendantOffset])) {
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newNode.appendChild(child);
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}
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dom.insertAfter(newNode, descendantNode);
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}
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return (descendantNode == node) ? newNode : splitNodeAt(node, newNode.parentNode, dom.getNodeIndex(newNode), rangesToPreserve);
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} else if (node != descendantNode) {
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newNode = descendantNode.parentNode;
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// Work out a new split point in the parent node
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var newNodeIndex = dom.getNodeIndex(descendantNode);
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if (!splitAtStart) {
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newNodeIndex++;
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}
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return splitNodeAt(node, newNode, newNodeIndex, rangesToPreserve);
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}
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return node;
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}
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function areElementsMergeable(el1, el2) {
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return el1.tagName == el2.tagName && haveSameClasses(el1, el2) && elementsHaveSameNonClassAttributes(el1, el2);
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}
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function createAdjacentMergeableTextNodeGetter(forward) {
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var propName = forward ? "nextSibling" : "previousSibling";
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return function(textNode, checkParentElement) {
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var el = textNode.parentNode;
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var adjacentNode = textNode[propName];
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if (adjacentNode) {
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// Can merge if the node's previous/next sibling is a text node
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if (adjacentNode && adjacentNode.nodeType == 3) {
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return adjacentNode;
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}
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} else if (checkParentElement) {
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// Compare text node parent element with its sibling
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adjacentNode = el[propName];
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if (adjacentNode && adjacentNode.nodeType == 1 && areElementsMergeable(el, adjacentNode)) {
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return adjacentNode[forward ? "firstChild" : "lastChild"];
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}
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}
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return null;
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}
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}
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var getPreviousMergeableTextNode = createAdjacentMergeableTextNodeGetter(false),
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getNextMergeableTextNode = createAdjacentMergeableTextNodeGetter(true);
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function Merge(firstNode) {
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this.isElementMerge = (firstNode.nodeType == 1);
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this.firstTextNode = this.isElementMerge ? firstNode.lastChild : firstNode;
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this.textNodes = [this.firstTextNode];
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}
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Merge.prototype = {
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doMerge: function() {
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var textBits = [], textNode, parent, text;
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for (var i = 0, len = this.textNodes.length; i < len; ++i) {
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textNode = this.textNodes[i];
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parent = textNode.parentNode;
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textBits[i] = textNode.data;
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if (i) {
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parent.removeChild(textNode);
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if (!parent.hasChildNodes()) {
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parent.parentNode.removeChild(parent);
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}
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}
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}
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this.firstTextNode.data = text = textBits.join("");
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return text;
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},
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getLength: function() {
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var i = this.textNodes.length, len = 0;
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while (i--) {
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len += this.textNodes[i].length;
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}
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return len;
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},
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toString: function() {
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var textBits = [];
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for (var i = 0, len = this.textNodes.length; i < len; ++i) {
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textBits[i] = "'" + this.textNodes[i].data + "'";
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}
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return "[Merge(" + textBits.join(",") + ")]";
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}
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};
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var optionProperties = ["elementTagName", "ignoreWhiteSpace", "applyToEditableOnly"];
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// Allow "class" as a property name in object properties
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var mappedPropertyNames = {"class" : "className"};
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function CssClassApplier(cssClass, options, tagNames) {
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this.cssClass = cssClass;
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var normalize, i, len, propName;
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var elementPropertiesFromOptions = null;
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// Initialize from options object
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if (typeof options == "object" && options !== null) {
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tagNames = options.tagNames;
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elementPropertiesFromOptions = options.elementProperties;
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for (i = 0; propName = optionProperties[i++]; ) {
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if (options.hasOwnProperty(propName)) {
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this[propName] = options[propName];
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}
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}
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normalize = options.normalize;
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} else {
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normalize = options;
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}
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// Backwards compatibility: the second parameter can also be a Boolean indicating whether normalization
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this.normalize = (typeof normalize == "undefined") ? true : normalize;
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// Initialize element properties and attribute exceptions
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this.attrExceptions = [];
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var el = document.createElement(this.elementTagName);
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this.elementProperties = {};
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for (var p in elementPropertiesFromOptions) {
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if (elementPropertiesFromOptions.hasOwnProperty(p)) {
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// Map "class" to "className"
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if (mappedPropertyNames.hasOwnProperty(p)) {
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p = mappedPropertyNames[p];
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}
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el[p] = elementPropertiesFromOptions[p];
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// Copy the property back from the dummy element so that later comparisons to check whether elements
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// may be removed are checking against the right value. For example, the href property of an element
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// returns a fully qualified URL even if it was previously assigned a relative URL.
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this.elementProperties[p] = el[p];
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this.attrExceptions.push(p);
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}
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}
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this.elementSortedClassName = this.elementProperties.hasOwnProperty("className") ?
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sortClassName(this.elementProperties.className + " " + cssClass) : cssClass;
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// Initialize tag names
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this.applyToAnyTagName = false;
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var type = typeof tagNames;
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if (type == "string") {
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if (tagNames == "*") {
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this.applyToAnyTagName = true;
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} else {
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this.tagNames = trim(tagNames.toLowerCase()).split(/\s*,\s*/);
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}
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} else if (type == "object" && typeof tagNames.length == "number") {
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this.tagNames = [];
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for (i = 0, len = tagNames.length; i < len; ++i) {
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if (tagNames[i] == "*") {
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this.applyToAnyTagName = true;
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} else {
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this.tagNames.push(tagNames[i].toLowerCase());
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}
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}
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} else {
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this.tagNames = [this.elementTagName];
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}
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}
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CssClassApplier.prototype = {
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elementTagName: defaultTagName,
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elementProperties: {},
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ignoreWhiteSpace: true,
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applyToEditableOnly: false,
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hasClass: function(node) {
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return node.nodeType == 1 && dom.arrayContains(this.tagNames, node.tagName.toLowerCase()) && hasClass(node, this.cssClass);
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},
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getSelfOrAncestorWithClass: function(node) {
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while (node) {
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if (this.hasClass(node, this.cssClass)) {
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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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return null;
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},
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isModifiable: function(node) {
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return !this.applyToEditableOnly || isEditable(node);
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},
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// White space adjacent to an unwrappable node can be ignored for wrapping
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isIgnorableWhiteSpaceNode: function(node) {
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return this.ignoreWhiteSpace && node && node.nodeType == 3 && isUnrenderedWhiteSpaceNode(node);
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},
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// Normalizes nodes after applying a CSS class to a Range.
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postApply: function(textNodes, range, isUndo) {
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var firstNode = textNodes[0], lastNode = textNodes[textNodes.length - 1];
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var merges = [], currentMerge;
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var rangeStartNode = firstNode, rangeEndNode = lastNode;
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var rangeStartOffset = 0, rangeEndOffset = lastNode.length;
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var textNode, precedingTextNode;
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for (var i = 0, len = textNodes.length; i < len; ++i) {
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textNode = textNodes[i];
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precedingTextNode = getPreviousMergeableTextNode(textNode, !isUndo);
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if (precedingTextNode) {
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if (!currentMerge) {
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currentMerge = new Merge(precedingTextNode);
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merges.push(currentMerge);
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}
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currentMerge.textNodes.push(textNode);
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if (textNode === firstNode) {
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rangeStartNode = currentMerge.firstTextNode;
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rangeStartOffset = rangeStartNode.length;
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}
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if (textNode === lastNode) {
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rangeEndNode = currentMerge.firstTextNode;
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rangeEndOffset = currentMerge.getLength();
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}
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} else {
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currentMerge = null;
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}
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}
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// Test whether the first node after the range needs merging
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var nextTextNode = getNextMergeableTextNode(lastNode, !isUndo);
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if (nextTextNode) {
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if (!currentMerge) {
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currentMerge = new Merge(lastNode);
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merges.push(currentMerge);
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}
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currentMerge.textNodes.push(nextTextNode);
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}
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// Do the merges
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if (merges.length) {
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for (i = 0, len = merges.length; i < len; ++i) {
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merges[i].doMerge();
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}
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// Set the range boundaries
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range.setStart(rangeStartNode, rangeStartOffset);
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range.setEnd(rangeEndNode, rangeEndOffset);
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}
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},
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createContainer: function(doc) {
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var el = doc.createElement(this.elementTagName);
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api.util.extend(el, this.elementProperties);
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addClass(el, this.cssClass);
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return el;
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},
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applyToTextNode: function(textNode) {
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var parent = textNode.parentNode;
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if (parent.childNodes.length == 1 && dom.arrayContains(this.tagNames, parent.tagName.toLowerCase())) {
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addClass(parent, this.cssClass);
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} else {
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var el = this.createContainer(dom.getDocument(textNode));
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textNode.parentNode.insertBefore(el, textNode);
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el.appendChild(textNode);
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}
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},
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isRemovable: function(el) {
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return el.tagName.toLowerCase() == this.elementTagName
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&& getSortedClassName(el) == this.elementSortedClassName
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&& elementHasProps(el, this.elementProperties)
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&& !elementHasNonClassAttributes(el, this.attrExceptions)
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&& this.isModifiable(el);
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},
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|
|
|
undoToTextNode: function(textNode, range, ancestorWithClass) {
|
|
|
|
if (!range.containsNode(ancestorWithClass)) {
|
|
// Split out the portion of the ancestor from which we can remove the CSS class
|
|
//var parent = ancestorWithClass.parentNode, index = dom.getNodeIndex(ancestorWithClass);
|
|
var ancestorRange = range.cloneRange();
|
|
ancestorRange.selectNode(ancestorWithClass);
|
|
|
|
if (ancestorRange.isPointInRange(range.endContainer, range.endOffset)/* && isSplitPoint(range.endContainer, range.endOffset)*/) {
|
|
splitNodeAt(ancestorWithClass, range.endContainer, range.endOffset, [range]);
|
|
range.setEndAfter(ancestorWithClass);
|
|
}
|
|
if (ancestorRange.isPointInRange(range.startContainer, range.startOffset)/* && isSplitPoint(range.startContainer, range.startOffset)*/) {
|
|
ancestorWithClass = splitNodeAt(ancestorWithClass, range.startContainer, range.startOffset, [range]);
|
|
}
|
|
}
|
|
|
|
if (this.isRemovable(ancestorWithClass)) {
|
|
replaceWithOwnChildren(ancestorWithClass);
|
|
} else {
|
|
removeClass(ancestorWithClass, this.cssClass);
|
|
}
|
|
},
|
|
|
|
applyToRange: function(range) {
|
|
range.splitBoundaries();
|
|
var textNodes = getEffectiveTextNodes(range);
|
|
|
|
if (textNodes.length) {
|
|
var textNode;
|
|
|
|
for (var i = 0, len = textNodes.length; i < len; ++i) {
|
|
textNode = textNodes[i];
|
|
|
|
if (!this.isIgnorableWhiteSpaceNode(textNode) && !this.getSelfOrAncestorWithClass(textNode)
|
|
&& this.isModifiable(textNode)) {
|
|
this.applyToTextNode(textNode);
|
|
}
|
|
}
|
|
range.setStart(textNodes[0], 0);
|
|
textNode = textNodes[textNodes.length - 1];
|
|
range.setEnd(textNode, textNode.length);
|
|
if (this.normalize) {
|
|
this.postApply(textNodes, range, false);
|
|
}
|
|
}
|
|
},
|
|
|
|
applyToSelection: function(win) {
|
|
|
|
win = win || window;
|
|
var sel = api.getSelection(win);
|
|
|
|
var range, ranges = sel.getAllRanges();
|
|
sel.removeAllRanges();
|
|
var i = ranges.length;
|
|
while (i--) {
|
|
range = ranges[i];
|
|
this.applyToRange(range);
|
|
sel.addRange(range);
|
|
}
|
|
|
|
},
|
|
|
|
undoToRange: function(range) {
|
|
|
|
range.splitBoundaries();
|
|
var textNodes = getEffectiveTextNodes(range);
|
|
var textNode, ancestorWithClass;
|
|
var lastTextNode = textNodes[textNodes.length - 1];
|
|
|
|
if (textNodes.length) {
|
|
for (var i = 0, len = textNodes.length; i < len; ++i) {
|
|
textNode = textNodes[i];
|
|
ancestorWithClass = this.getSelfOrAncestorWithClass(textNode);
|
|
if (ancestorWithClass && this.isModifiable(textNode)) {
|
|
this.undoToTextNode(textNode, range, ancestorWithClass);
|
|
}
|
|
|
|
// Ensure the range is still valid
|
|
range.setStart(textNodes[0], 0);
|
|
range.setEnd(lastTextNode, lastTextNode.length);
|
|
}
|
|
|
|
|
|
|
|
if (this.normalize) {
|
|
this.postApply(textNodes, range, true);
|
|
}
|
|
}
|
|
},
|
|
|
|
undoToSelection: function(win) {
|
|
win = win || window;
|
|
var sel = api.getSelection(win);
|
|
var ranges = sel.getAllRanges(), range;
|
|
sel.removeAllRanges();
|
|
for (var i = 0, len = ranges.length; i < len; ++i) {
|
|
range = ranges[i];
|
|
this.undoToRange(range);
|
|
sel.addRange(range);
|
|
}
|
|
},
|
|
|
|
getTextSelectedByRange: function(textNode, range) {
|
|
var textRange = range.cloneRange();
|
|
textRange.selectNodeContents(textNode);
|
|
|
|
var intersectionRange = textRange.intersection(range);
|
|
var text = intersectionRange ? intersectionRange.toString() : "";
|
|
textRange.detach();
|
|
|
|
return text;
|
|
},
|
|
|
|
isAppliedToRange: function(range) {
|
|
if (range.collapsed) {
|
|
return !!this.getSelfOrAncestorWithClass(range.commonAncestorContainer);
|
|
} else {
|
|
var textNodes = range.getNodes( [3] );
|
|
for (var i = 0, textNode; textNode = textNodes[i++]; ) {
|
|
if (!this.isIgnorableWhiteSpaceNode(textNode) && rangeSelectsAnyText(range, textNode)
|
|
&& this.isModifiable(textNode) && !this.getSelfOrAncestorWithClass(textNode)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
},
|
|
|
|
isAppliedToSelection: function(win) {
|
|
win = win || window;
|
|
var sel = api.getSelection(win);
|
|
var ranges = sel.getAllRanges();
|
|
var i = ranges.length;
|
|
while (i--) {
|
|
if (!this.isAppliedToRange(ranges[i])) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
},
|
|
|
|
toggleRange: function(range) {
|
|
if (this.isAppliedToRange(range)) {
|
|
this.undoToRange(range);
|
|
} else {
|
|
this.applyToRange(range);
|
|
}
|
|
},
|
|
|
|
toggleSelection: function(win) {
|
|
if (this.isAppliedToSelection(win)) {
|
|
this.undoToSelection(win);
|
|
} else {
|
|
this.applyToSelection(win);
|
|
}
|
|
},
|
|
|
|
detach: function() {}
|
|
};
|
|
|
|
function createCssClassApplier(cssClass, options, tagNames) {
|
|
return new CssClassApplier(cssClass, options, tagNames);
|
|
}
|
|
|
|
CssClassApplier.util = {
|
|
hasClass: hasClass,
|
|
addClass: addClass,
|
|
removeClass: removeClass,
|
|
hasSameClasses: haveSameClasses,
|
|
replaceWithOwnChildren: replaceWithOwnChildren,
|
|
elementsHaveSameNonClassAttributes: elementsHaveSameNonClassAttributes,
|
|
elementHasNonClassAttributes: elementHasNonClassAttributes,
|
|
splitNodeAt: splitNodeAt,
|
|
isEditableElement: isEditableElement,
|
|
isEditingHost: isEditingHost,
|
|
isEditable: isEditable
|
|
};
|
|
|
|
api.CssClassApplier = CssClassApplier;
|
|
api.createCssClassApplier = createCssClassApplier;
|
|
});
|