--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_skin/resources/js/ext/tinymce/dev/plugins/paste/classes/Clipboard.js Thu Feb 13 11:43:31 2020 +0100
@@ -0,0 +1,611 @@
+/**
+ * Clipboard.js
+ *
+ * Copyright, Moxiecode Systems AB
+ * Released under LGPL License.
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+/**
+ * This class contains logic for getting HTML contents out of the clipboard.
+ *
+ * We need to make a lot of ugly hacks to get the contents out of the clipboard since
+ * the W3C Clipboard API is broken in all browsers that have it: Gecko/WebKit/Blink.
+ * We might rewrite this the way those API:s stabilize. Browsers doesn't handle pasting
+ * from applications like Word the same way as it does when pasting into a contentEditable area
+ * so we need to do lots of extra work to try to get to this clipboard data.
+ *
+ * Current implementation steps:
+ * 1. On keydown with paste keys Ctrl+V or Shift+Insert create
+ * a paste bin element and move focus to that element.
+ * 2. Wait for the browser to fire a "paste" event and get the contents out of the paste bin.
+ * 3. Check if the paste was successful if true, process the HTML.
+ * (4). If the paste was unsuccessful use IE execCommand, Clipboard API, document.dataTransfer old WebKit API etc.
+ *
+ * @class tinymce.pasteplugin.Clipboard
+ * @private
+ */
+define("tinymce/pasteplugin/Clipboard", [
+ "tinymce/Env",
+ "tinymce/dom/RangeUtils",
+ "tinymce/util/VK",
+ "tinymce/pasteplugin/Utils"
+], function(Env, RangeUtils, VK, Utils) {
+ return function(editor) {
+ var self = this, pasteBinElm, lastRng, keyboardPasteTimeStamp = 0, draggingInternally = false;
+ var pasteBinDefaultContent = '%MCEPASTEBIN%', keyboardPastePlainTextState;
+ var mceInternalUrlPrefix = 'data:text/mce-internal,';
+
+ /**
+ * Pastes the specified HTML. This means that the HTML is filtered and then
+ * inserted at the current selection in the editor. It will also fire paste events
+ * for custom user filtering.
+ *
+ * @param {String} html HTML code to paste into the current selection.
+ */
+ function pasteHtml(html) {
+ var args, dom = editor.dom;
+
+ args = editor.fire('BeforePastePreProcess', {content: html}); // Internal event used by Quirks
+ args = editor.fire('PastePreProcess', args);
+ html = args.content;
+
+ if (!args.isDefaultPrevented()) {
+ // User has bound PastePostProcess events then we need to pass it through a DOM node
+ // This is not ideal but we don't want to let the browser mess up the HTML for example
+ // some browsers add to P tags etc
+ if (editor.hasEventListeners('PastePostProcess') && !args.isDefaultPrevented()) {
+ // We need to attach the element to the DOM so Sizzle selectors work on the contents
+ var tempBody = dom.add(editor.getBody(), 'div', {style: 'display:none'}, html);
+ args = editor.fire('PastePostProcess', {node: tempBody});
+ dom.remove(tempBody);
+ html = args.node.innerHTML;
+ }
+
+ if (!args.isDefaultPrevented()) {
+ editor.insertContent(html, {merge: editor.settings.paste_merge_formats !== false});
+ }
+ }
+ }
+
+ /**
+ * Pastes the specified text. This means that the plain text is processed
+ * and converted into BR and P elements. It will fire paste events for custom filtering.
+ *
+ * @param {String} text Text to paste as the current selection location.
+ */
+ function pasteText(text) {
+ text = editor.dom.encode(text).replace(/\r\n/g, '\n');
+
+ var startBlock = editor.dom.getParent(editor.selection.getStart(), editor.dom.isBlock);
+
+ // Create start block html for example <p attr="value">
+ var forcedRootBlockName = editor.settings.forced_root_block;
+ var forcedRootBlockStartHtml;
+ if (forcedRootBlockName) {
+ forcedRootBlockStartHtml = editor.dom.createHTML(forcedRootBlockName, editor.settings.forced_root_block_attrs);
+ forcedRootBlockStartHtml = forcedRootBlockStartHtml.substr(0, forcedRootBlockStartHtml.length - 3) + '>';
+ }
+
+ if ((startBlock && /^(PRE|DIV)$/.test(startBlock.nodeName)) || !forcedRootBlockName) {
+ text = Utils.filter(text, [
+ [/\n/g, "<br>"]
+ ]);
+ } else {
+ text = Utils.filter(text, [
+ [/\n\n/g, "</p>" + forcedRootBlockStartHtml],
+ [/^(.*<\/p>)(<p>)$/, forcedRootBlockStartHtml + '$1'],
+ [/\n/g, "<br />"]
+ ]);
+
+ if (text.indexOf('<p>') != -1) {
+ text = forcedRootBlockStartHtml + text;
+ }
+ }
+
+ pasteHtml(text);
+ }
+
+ /**
+ * Creates a paste bin element as close as possible to the current caret location and places the focus inside that element
+ * so that when the real paste event occurs the contents gets inserted into this element
+ * instead of the current editor selection element.
+ */
+ function createPasteBin() {
+ var dom = editor.dom, body = editor.getBody();
+ var viewport = editor.dom.getViewPort(editor.getWin()), scrollTop = viewport.y, top = 20;
+ var scrollContainer;
+
+ lastRng = editor.selection.getRng();
+
+ if (editor.inline) {
+ scrollContainer = editor.selection.getScrollContainer();
+
+ // Can't always rely on scrollTop returning a useful value.
+ // It returns 0 if the browser doesn't support scrollTop for the element or is non-scrollable
+ if (scrollContainer && scrollContainer.scrollTop > 0) {
+ scrollTop = scrollContainer.scrollTop;
+ }
+ }
+
+ /**
+ * Returns the rect of the current caret if the caret is in an empty block before a
+ * BR we insert a temporary invisible character that we get the rect this way we always get a proper rect.
+ *
+ * TODO: This might be useful in core.
+ */
+ function getCaretRect(rng) {
+ var rects, textNode, node, container = rng.startContainer;
+
+ rects = rng.getClientRects();
+ if (rects.length) {
+ return rects[0];
+ }
+
+ if (!rng.collapsed || container.nodeType != 1) {
+ return;
+ }
+
+ node = container.childNodes[lastRng.startOffset];
+
+ // Skip empty whitespace nodes
+ while (node && node.nodeType == 3 && !node.data.length) {
+ node = node.nextSibling;
+ }
+
+ if (!node) {
+ return;
+ }
+
+ // Check if the location is |<br>
+ // TODO: Might need to expand this to say |<table>
+ if (node.tagName == 'BR') {
+ textNode = dom.doc.createTextNode('\uFEFF');
+ node.parentNode.insertBefore(textNode, node);
+
+ rng = dom.createRng();
+ rng.setStartBefore(textNode);
+ rng.setEndAfter(textNode);
+
+ rects = rng.getClientRects();
+ dom.remove(textNode);
+ }
+
+ if (rects.length) {
+ return rects[0];
+ }
+ }
+
+ // Calculate top cordinate this is needed to avoid scrolling to top of document
+ // We want the paste bin to be as close to the caret as possible to avoid scrolling
+ if (lastRng.getClientRects) {
+ var rect = getCaretRect(lastRng);
+
+ if (rect) {
+ // Client rects gets us closes to the actual
+ // caret location in for example a wrapped paragraph block
+ top = scrollTop + (rect.top - dom.getPos(body).y);
+ } else {
+ top = scrollTop;
+
+ // Check if we can find a closer location by checking the range element
+ var container = lastRng.startContainer;
+ if (container) {
+ if (container.nodeType == 3 && container.parentNode != body) {
+ container = container.parentNode;
+ }
+
+ if (container.nodeType == 1) {
+ top = dom.getPos(container, scrollContainer || body).y;
+ }
+ }
+ }
+ }
+
+ // Create a pastebin
+ pasteBinElm = dom.add(editor.getBody(), 'div', {
+ id: "mcepastebin",
+ contentEditable: true,
+ "data-mce-bogus": "all",
+ style: 'position: absolute; top: ' + top + 'px;' +
+ 'width: 10px; height: 10px; overflow: hidden; opacity: 0'
+ }, pasteBinDefaultContent);
+
+ // Move paste bin out of sight since the controlSelection rect gets displayed otherwise on IE and Gecko
+ if (Env.ie || Env.gecko) {
+ dom.setStyle(pasteBinElm, 'left', dom.getStyle(body, 'direction', true) == 'rtl' ? 0xFFFF : -0xFFFF);
+ }
+
+ // Prevent focus events from bubbeling fixed FocusManager issues
+ dom.bind(pasteBinElm, 'beforedeactivate focusin focusout', function(e) {
+ e.stopPropagation();
+ });
+
+ pasteBinElm.focus();
+ editor.selection.select(pasteBinElm, true);
+ }
+
+ /**
+ * Removes the paste bin if it exists.
+ */
+ function removePasteBin() {
+ if (pasteBinElm) {
+ var pasteBinClone;
+
+ // WebKit/Blink might clone the div so
+ // lets make sure we remove all clones
+ // TODO: Man o man is this ugly. WebKit is the new IE! Remove this if they ever fix it!
+ while ((pasteBinClone = editor.dom.get('mcepastebin'))) {
+ editor.dom.remove(pasteBinClone);
+ editor.dom.unbind(pasteBinClone);
+ }
+
+ if (lastRng) {
+ editor.selection.setRng(lastRng);
+ }
+ }
+
+ pasteBinElm = lastRng = null;
+ }
+
+ /**
+ * Returns the contents of the paste bin as a HTML string.
+ *
+ * @return {String} Get the contents of the paste bin.
+ */
+ function getPasteBinHtml() {
+ var html = '', pasteBinClones, i, clone, cloneHtml;
+
+ // Since WebKit/Chrome might clone the paste bin when pasting
+ // for example: <img style="float: right"> we need to check if any of them contains some useful html.
+ // TODO: Man o man is this ugly. WebKit is the new IE! Remove this if they ever fix it!
+ pasteBinClones = editor.dom.select('div[id=mcepastebin]');
+ for (i = 0; i < pasteBinClones.length; i++) {
+ clone = pasteBinClones[i];
+
+ // Pasting plain text produces pastebins in pastebinds makes sence right!?
+ if (clone.firstChild && clone.firstChild.id == 'mcepastebin') {
+ clone = clone.firstChild;
+ }
+
+ cloneHtml = clone.innerHTML;
+ if (html != pasteBinDefaultContent) {
+ html += cloneHtml;
+ }
+ }
+
+ return html;
+ }
+
+ /**
+ * Gets various content types out of a datatransfer object.
+ *
+ * @param {DataTransfer} dataTransfer Event fired on paste.
+ * @return {Object} Object with mime types and data for those mime types.
+ */
+ function getDataTransferItems(dataTransfer) {
+ var data = {};
+
+ if (dataTransfer) {
+ // Use old WebKit/IE API
+ if (dataTransfer.getData) {
+ var legacyText = dataTransfer.getData('Text');
+ if (legacyText && legacyText.length > 0) {
+ if (legacyText.indexOf(mceInternalUrlPrefix) == -1) {
+ data['text/plain'] = legacyText;
+ }
+ }
+ }
+
+ if (dataTransfer.types) {
+ for (var i = 0; i < dataTransfer.types.length; i++) {
+ var contentType = dataTransfer.types[i];
+ data[contentType] = dataTransfer.getData(contentType);
+ }
+ }
+ }
+
+ return data;
+ }
+
+ /**
+ * Gets various content types out of the Clipboard API. It will also get the
+ * plain text using older IE and WebKit API:s.
+ *
+ * @param {ClipboardEvent} clipboardEvent Event fired on paste.
+ * @return {Object} Object with mime types and data for those mime types.
+ */
+ function getClipboardContent(clipboardEvent) {
+ return getDataTransferItems(clipboardEvent.clipboardData || editor.getDoc().dataTransfer);
+ }
+
+ /**
+ * Checks if the clipboard contains image data if it does it will take that data
+ * and convert it into a data url image and paste that image at the caret location.
+ *
+ * @param {ClipboardEvent} e Paste/drop event object.
+ * @param {DOMRange} rng Optional rng object to move selection to.
+ * @return {Boolean} true/false if the image data was found or not.
+ */
+ function pasteImageData(e, rng) {
+ var dataTransfer = e.clipboardData || e.dataTransfer;
+
+ function processItems(items) {
+ var i, item, reader, hadImage = false;
+
+ function pasteImage(reader) {
+ if (rng) {
+ editor.selection.setRng(rng);
+ rng = null;
+ }
+
+ pasteHtml('<img src="' + reader.result + '">');
+ }
+
+ if (items) {
+ for (i = 0; i < items.length; i++) {
+ item = items[i];
+
+ if (/^image\/(jpeg|png|gif|bmp)$/.test(item.type)) {
+ reader = new FileReader();
+ reader.onload = pasteImage.bind(null, reader);
+ reader.readAsDataURL(item.getAsFile ? item.getAsFile() : item);
+
+ e.preventDefault();
+ hadImage = true;
+ }
+ }
+ }
+
+ return hadImage;
+ }
+
+ if (editor.settings.paste_data_images && dataTransfer) {
+ return processItems(dataTransfer.items) || processItems(dataTransfer.files);
+ }
+ }
+
+ /**
+ * Chrome on Android doesn't support proper clipboard access so we have no choice but to allow the browser default behavior.
+ *
+ * @param {Event} e Paste event object to check if it contains any data.
+ * @return {Boolean} true/false if the clipboard is empty or not.
+ */
+ function isBrokenAndroidClipboardEvent(e) {
+ var clipboardData = e.clipboardData;
+
+ return navigator.userAgent.indexOf('Android') != -1 && clipboardData && clipboardData.items && clipboardData.items.length === 0;
+ }
+
+ function getCaretRangeFromEvent(e) {
+ return RangeUtils.getCaretRangeFromPoint(e.clientX, e.clientY, editor.getDoc());
+ }
+
+ function hasContentType(clipboardContent, mimeType) {
+ return mimeType in clipboardContent && clipboardContent[mimeType].length > 0;
+ }
+
+ function isKeyboardPasteEvent(e) {
+ return (VK.metaKeyPressed(e) && e.keyCode == 86) || (e.shiftKey && e.keyCode == 45);
+ }
+
+ function registerEventHandlers() {
+ editor.on('keydown', function(e) {
+ function removePasteBinOnKeyUp(e) {
+ // Ctrl+V or Shift+Insert
+ if (isKeyboardPasteEvent(e) && !e.isDefaultPrevented()) {
+ removePasteBin();
+ }
+ }
+
+ // Ctrl+V or Shift+Insert
+ if (isKeyboardPasteEvent(e) && !e.isDefaultPrevented()) {
+ keyboardPastePlainTextState = e.shiftKey && e.keyCode == 86;
+
+ // Edge case on Safari on Mac where it doesn't handle Cmd+Shift+V correctly
+ // it fires the keydown but no paste or keyup so we are left with a paste bin
+ if (keyboardPastePlainTextState && Env.webkit && navigator.userAgent.indexOf('Version/') != -1) {
+ return;
+ }
+
+ // Prevent undoManager keydown handler from making an undo level with the pastebin in it
+ e.stopImmediatePropagation();
+
+ keyboardPasteTimeStamp = new Date().getTime();
+
+ // IE doesn't support Ctrl+Shift+V and it doesn't even produce a paste event
+ // so lets fake a paste event and let IE use the execCommand/dataTransfer methods
+ if (Env.ie && keyboardPastePlainTextState) {
+ e.preventDefault();
+ editor.fire('paste', {ieFake: true});
+ return;
+ }
+
+ removePasteBin();
+ createPasteBin();
+
+ // Remove pastebin if we get a keyup and no paste event
+ // For example pasting a file in IE 11 will not produce a paste event
+ editor.once('keyup', removePasteBinOnKeyUp);
+ editor.once('paste', function() {
+ editor.off('keyup', removePasteBinOnKeyUp);
+ });
+ }
+ });
+
+ editor.on('paste', function(e) {
+ // Getting content from the Clipboard can take some time
+ var clipboardTimer = new Date().getTime();
+ var clipboardContent = getClipboardContent(e);
+ var clipboardDelay = new Date().getTime() - clipboardTimer;
+
+ var isKeyBoardPaste = (new Date().getTime() - keyboardPasteTimeStamp - clipboardDelay) < 1000;
+ var plainTextMode = self.pasteFormat == "text" || keyboardPastePlainTextState;
+
+ keyboardPastePlainTextState = false;
+
+ if (e.isDefaultPrevented() || isBrokenAndroidClipboardEvent(e)) {
+ removePasteBin();
+ return;
+ }
+
+ if (pasteImageData(e)) {
+ removePasteBin();
+ return;
+ }
+
+ // Not a keyboard paste prevent default paste and try to grab the clipboard contents using different APIs
+ if (!isKeyBoardPaste) {
+ e.preventDefault();
+ }
+
+ // Try IE only method if paste isn't a keyboard paste
+ if (Env.ie && (!isKeyBoardPaste || e.ieFake)) {
+ createPasteBin();
+
+ editor.dom.bind(pasteBinElm, 'paste', function(e) {
+ e.stopPropagation();
+ });
+
+ editor.getDoc().execCommand('Paste', false, null);
+ clipboardContent["text/html"] = getPasteBinHtml();
+ }
+
+ setTimeout(function() {
+ var content;
+
+ // Grab HTML from Clipboard API or paste bin as a fallback
+ if (hasContentType(clipboardContent, 'text/html')) {
+ content = clipboardContent['text/html'];
+ } else {
+ content = getPasteBinHtml();
+
+ // If paste bin is empty try using plain text mode
+ // since that is better than nothing right
+ if (content == pasteBinDefaultContent) {
+ plainTextMode = true;
+ }
+ }
+
+ content = Utils.trimHtml(content);
+
+ // WebKit has a nice bug where it clones the paste bin if you paste from for example notepad
+ // so we need to force plain text mode in this case
+ if (pasteBinElm && pasteBinElm.firstChild && pasteBinElm.firstChild.id === 'mcepastebin') {
+ plainTextMode = true;
+ }
+
+ removePasteBin();
+
+ // If we got nothing from clipboard API and pastebin then we could try the last resort: plain/text
+ if (!content.length) {
+ plainTextMode = true;
+ }
+
+ // Grab plain text from Clipboard API or convert existing HTML to plain text
+ if (plainTextMode) {
+ // Use plain text contents from Clipboard API unless the HTML contains paragraphs then
+ // we should convert the HTML to plain text since works better when pasting HTML/Word contents as plain text
+ if (hasContentType(clipboardContent, 'text/plain') && content.indexOf('</p>') == -1) {
+ content = clipboardContent['text/plain'];
+ } else {
+ content = Utils.innerText(content);
+ }
+ }
+
+ // If the content is the paste bin default HTML then it was
+ // impossible to get the cliboard data out.
+ if (content == pasteBinDefaultContent) {
+ if (!isKeyBoardPaste) {
+ editor.windowManager.alert('Please use Ctrl+V/Cmd+V keyboard shortcuts to paste contents.');
+ }
+
+ return;
+ }
+
+ if (plainTextMode) {
+ pasteText(content);
+ } else {
+ pasteHtml(content);
+ }
+ }, 0);
+ });
+
+ editor.on('dragstart dragend', function(e) {
+ draggingInternally = e.type == 'dragstart';
+ });
+
+ editor.on('drop', function(e) {
+ var rng = getCaretRangeFromEvent(e);
+
+ if (e.isDefaultPrevented() || draggingInternally) {
+ return;
+ }
+
+ if (pasteImageData(e, rng)) {
+ return;
+ }
+
+ if (rng && editor.settings.paste_filter_drop !== false) {
+ var dropContent = getDataTransferItems(e.dataTransfer);
+ var content = dropContent['mce-internal'] || dropContent['text/html'] || dropContent['text/plain'];
+
+ if (content) {
+ e.preventDefault();
+
+ editor.undoManager.transact(function() {
+ if (dropContent['mce-internal']) {
+ editor.execCommand('Delete');
+ }
+
+ editor.selection.setRng(rng);
+
+ content = Utils.trimHtml(content);
+
+ if (!dropContent['text/html']) {
+ pasteText(content);
+ } else {
+ pasteHtml(content);
+ }
+ });
+ }
+ }
+ });
+
+ editor.on('dragover dragend', function(e) {
+ if (editor.settings.paste_data_images) {
+ e.preventDefault();
+ }
+ });
+ }
+
+ self.pasteHtml = pasteHtml;
+ self.pasteText = pasteText;
+
+ editor.on('preInit', function() {
+ registerEventHandlers();
+
+ // Remove all data images from paste for example from Gecko
+ // except internal images like video elements
+ editor.parser.addNodeFilter('img', function(nodes) {
+ if (!editor.settings.paste_data_images) {
+ var i = nodes.length;
+
+ while (i--) {
+ var src = nodes[i].attributes.map.src;
+
+ // Some browsers automatically produce data uris on paste
+ // Safari on Mac produces webkit-fake-url see: https://bugs.webkit.org/show_bug.cgi?id=49141
+ if (src && /^(data:image|webkit\-fake\-url)/.test(src)) {
+ if (!nodes[i].attr('data-mce-object') && src !== Env.transparentSrc) {
+ nodes[i].remove();
+ }
+ }
+ }
+ }
+ });
+ });
+ };
+});