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/**
* Quirks.js
*
* Copyright, Moxiecode Systems AB
* Released under LGPL License.
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*
* @ignore-file
*/
/**
* This file includes fixes for various browser quirks it's made to make it easy to add/remove browser specific fixes.
*
* @class tinymce.util.Quirks
*/
define("tinymce/util/Quirks", [
"tinymce/util/VK",
"tinymce/dom/RangeUtils",
"tinymce/html/Node",
"tinymce/html/Entities",
"tinymce/Env",
"tinymce/util/Tools"
], function(VK, RangeUtils, Node, Entities, Env, Tools) {
return function(editor) {
var each = Tools.each;
var BACKSPACE = VK.BACKSPACE, DELETE = VK.DELETE, dom = editor.dom, selection = editor.selection,
settings = editor.settings, parser = editor.parser, serializer = editor.serializer;
var isGecko = Env.gecko, isIE = Env.ie, isWebKit = Env.webkit;
/**
* Executes a command with a specific state this can be to enable/disable browser editing features.
*/
function setEditorCommandState(cmd, state) {
try {
editor.getDoc().execCommand(cmd, false, state);
} catch (ex) {
// Ignore
}
}
/**
* Returns current IE document mode.
*/
function getDocumentMode() {
var documentMode = editor.getDoc().documentMode;
return documentMode ? documentMode : 6;
}
/**
* Returns true/false if the event is prevented or not.
*
* @private
* @param {Event} e Event object.
* @return {Boolean} true/false if the event is prevented or not.
*/
function isDefaultPrevented(e) {
return e.isDefaultPrevented();
}
/**
* Fixes a WebKit bug when deleting contents using backspace or delete key.
* WebKit will produce a span element if you delete across two block elements.
*
* Example:
* <h1>a</h1><p>|b</p>
*
* Will produce this on backspace:
* <h1>a<span style="<all runtime styles>">b</span></p>
*
* This fixes the backspace to produce:
* <h1>a|b</p>
*
* See bug: https://bugs.webkit.org/show_bug.cgi?id=45784
*
* This fixes the following delete scenarios:
* 1. Delete by pressing backspace key.
* 2. Delete by pressing delete key.
* 3. Delete by pressing backspace key with ctrl/cmd (Word delete).
* 4. Delete by pressing delete key with ctrl/cmd (Word delete).
* 5. Delete by drag/dropping contents inside the editor.
* 6. Delete by using Cut Ctrl+X/Cmd+X.
* 7. Delete by selecting contents and writing a character.'
*
* This code is a ugly hack since writing full custom delete logic for just this bug
* fix seemed like a huge task. I hope we can remove this before the year 2030.
*/
function cleanupStylesWhenDeleting() {
var doc = editor.getDoc(), urlPrefix = 'data:text/mce-internal,';
var MutationObserver = window.MutationObserver, olderWebKit, dragStartRng;
// Add mini polyfill for older WebKits
// TODO: Remove this when old Safari versions gets updated
if (!MutationObserver) {
olderWebKit = true;
MutationObserver = function() {
var records = [], target;
function nodeInsert(e) {
var target = e.relatedNode || e.target;
records.push({target: target, addedNodes: [target]});
}
function attrModified(e) {
var target = e.relatedNode || e.target;
records.push({target: target, attributeName: e.attrName});
}
this.observe = function(node) {
target = node;
target.addEventListener('DOMSubtreeModified', nodeInsert, false);
target.addEventListener('DOMNodeInsertedIntoDocument', nodeInsert, false);
target.addEventListener('DOMNodeInserted', nodeInsert, false);
target.addEventListener('DOMAttrModified', attrModified, false);
};
this.disconnect = function() {
target.removeEventListener('DOMSubtreeModified', nodeInsert, false);
target.removeEventListener('DOMNodeInsertedIntoDocument', nodeInsert, false);
target.removeEventListener('DOMNodeInserted', nodeInsert, false);
target.removeEventListener('DOMAttrModified', attrModified, false);
};
this.takeRecords = function() {
return records;
};
};
}
function customDelete(isForward) {
var mutationObserver = new MutationObserver(function() {});
Tools.each(editor.getBody().getElementsByTagName('*'), function(elm) {
// Mark existing spans
if (elm.tagName == 'SPAN') {
elm.setAttribute('mce-data-marked', 1);
}
// Make sure all elements has a data-mce-style attribute
if (!elm.hasAttribute('data-mce-style') && elm.hasAttribute('style')) {
editor.dom.setAttrib(elm, 'style', editor.dom.getAttrib(elm, 'style'));
}
});
// Observe added nodes and style attribute changes
mutationObserver.observe(editor.getDoc(), {
childList: true,
attributes: true,
subtree: true,
attributeFilter: ['style']
});
editor.getDoc().execCommand(isForward ? 'ForwardDelete' : 'Delete', false, null);
var rng = editor.selection.getRng();
var caretElement = rng.startContainer.parentNode;
Tools.each(mutationObserver.takeRecords(), function(record) {
if (!dom.isChildOf(record.target, editor.getBody())) {
return;
}
// Restore style attribute to previous value
if (record.attributeName == "style") {
var oldValue = record.target.getAttribute('data-mce-style');
if (oldValue) {
record.target.setAttribute("style", oldValue);
} else {
record.target.removeAttribute("style");
}
}
// Remove all spans that isn't maked and retain selection
Tools.each(record.addedNodes, function(node) {
if (node.nodeName == "SPAN" && !node.getAttribute('mce-data-marked')) {
var offset, container;
if (node == caretElement) {
offset = rng.startOffset;
container = node.firstChild;
}
dom.remove(node, true);
if (container) {
rng.setStart(container, offset);
rng.setEnd(container, offset);
editor.selection.setRng(rng);
}
}
});
});
mutationObserver.disconnect();
// Remove any left over marks
Tools.each(editor.dom.select('span[mce-data-marked]'), function(span) {
span.removeAttribute('mce-data-marked');
});
}
editor.on('keydown', function(e) {
var isForward = e.keyCode == DELETE, isMeta = VK.metaKeyPressed(e);
if (!isDefaultPrevented(e) && (isForward || e.keyCode == BACKSPACE)) {
var rng = editor.selection.getRng(), container = rng.startContainer, offset = rng.startOffset;
// Ignore non meta delete in the where there is text before/after the caret
if (!isMeta && rng.collapsed && container.nodeType == 3) {
if (isForward ? offset < container.data.length : offset > 0) {
return;
}
}
e.preventDefault();
if (isMeta) {
editor.selection.getSel().modify("extend", isForward ? "forward" : "backward", "word");
}
customDelete(isForward);
}
});
editor.on('keypress', function(e) {
if (!isDefaultPrevented(e) && !selection.isCollapsed() && e.charCode && !VK.metaKeyPressed(e)) {
e.preventDefault();
customDelete(true);
editor.selection.setContent(String.fromCharCode(e.charCode));
}
});
editor.addCommand('Delete', function() {
customDelete();
});
editor.addCommand('ForwardDelete', function() {
customDelete(true);
});
// Older WebKits doesn't properly handle the clipboard so we can't add the rest
if (olderWebKit) {
return;
}
editor.on('dragstart', function(e) {
var selectionHtml;
if (editor.selection.isCollapsed() && e.target.tagName == 'IMG') {
selection.select(e.target);
}
dragStartRng = selection.getRng();
selectionHtml = editor.selection.getContent();
// Safari doesn't support custom dataTransfer items so we can only use URL and Text
if (selectionHtml.length > 0) {
e.dataTransfer.setData('URL', 'data:text/mce-internal,' + escape(selectionHtml));
}
});
editor.on('drop', function(e) {
if (!isDefaultPrevented(e)) {
var internalContent = e.dataTransfer.getData('URL');
if (!internalContent || internalContent.indexOf(urlPrefix) == -1 || !doc.caretRangeFromPoint) {
return;
}
internalContent = unescape(internalContent.substr(urlPrefix.length));
if (doc.caretRangeFromPoint) {
e.preventDefault();
// Safari has a weird issue where drag/dropping images sometimes
// produces a green plus icon. When this happens the caretRangeFromPoint
// will return "null" even though the x, y coordinate is correct.
// But if we detach the insert from the drop event we will get a proper range
window.setTimeout(function() {
var pointRng = doc.caretRangeFromPoint(e.x, e.y);
if (dragStartRng) {
selection.setRng(dragStartRng);
dragStartRng = null;
}
customDelete();
selection.setRng(pointRng);
editor.insertContent(internalContent);
}, 0);
}
}
});
editor.on('cut', function(e) {
if (!isDefaultPrevented(e) && e.clipboardData) {
e.preventDefault();
e.clipboardData.clearData();
e.clipboardData.setData('text/html', editor.selection.getContent());
e.clipboardData.setData('text/plain', editor.selection.getContent({format: 'text'}));
customDelete(true);
}
});
}
/**
* Makes sure that the editor body becomes empty when backspace or delete is pressed in empty editors.
*
* For example:
* <p><b>|</b></p>
*
* Or:
* <h1>|</h1>
*
* Or:
* [<h1></h1>]
*/
function emptyEditorWhenDeleting() {
function serializeRng(rng) {
var body = dom.create("body");
var contents = rng.cloneContents();
body.appendChild(contents);
return selection.serializer.serialize(body, {format: 'html'});
}
function allContentsSelected(rng) {
if (!rng.setStart) {
if (rng.item) {
return false;
}
var bodyRng = rng.duplicate();
bodyRng.moveToElementText(editor.getBody());
return RangeUtils.compareRanges(rng, bodyRng);
}
var selection = serializeRng(rng);
var allRng = dom.createRng();
allRng.selectNode(editor.getBody());
var allSelection = serializeRng(allRng);
return selection === allSelection;
}
editor.on('keydown', function(e) {
var keyCode = e.keyCode, isCollapsed, body;
// Empty the editor if it's needed for example backspace at <p><b>|</b></p>
if (!isDefaultPrevented(e) && (keyCode == DELETE || keyCode == BACKSPACE)) {
isCollapsed = editor.selection.isCollapsed();
body = editor.getBody();
// Selection is collapsed but the editor isn't empty
if (isCollapsed && !dom.isEmpty(body)) {
return;
}
// Selection isn't collapsed but not all the contents is selected
if (!isCollapsed && !allContentsSelected(editor.selection.getRng())) {
return;
}
// Manually empty the editor
e.preventDefault();
editor.setContent('');
if (body.firstChild && dom.isBlock(body.firstChild)) {
editor.selection.setCursorLocation(body.firstChild, 0);
} else {
editor.selection.setCursorLocation(body, 0);
}
editor.nodeChanged();
}
});
}
/**
* WebKit doesn't select all the nodes in the body when you press Ctrl+A.
* IE selects more than the contents <body>[<p>a</p>]</body> instead of <body><p>[a]</p]</body> see bug #6438
* This selects the whole body so that backspace/delete logic will delete everything
*/
function selectAll() {
editor.shortcuts.add('ctrl+a', null, 'SelectAll');
}
/**
* WebKit has a weird issue where it some times fails to properly convert keypresses to input method keystrokes.
* The IME on Mac doesn't initialize when it doesn't fire a proper focus event.
*
* This seems to happen when the user manages to click the documentElement element then the window doesn't get proper focus until
* you enter a character into the editor.
*
* It also happens when the first focus in made to the body.
*
* See: https://bugs.webkit.org/show_bug.cgi?id=83566
*/
function inputMethodFocus() {
if (!editor.settings.content_editable) {
// Case 1 IME doesn't initialize if you focus the document
dom.bind(editor.getDoc(), 'focusin', function() {
selection.setRng(selection.getRng());
});
// Case 2 IME doesn't initialize if you click the documentElement it also doesn't properly fire the focusin event
// Needs to be both down/up due to weird rendering bug on Chrome Windows
dom.bind(editor.getDoc(), 'mousedown mouseup', function(e) {
if (e.target == editor.getDoc().documentElement) {
editor.getBody().focus();
if (e.type == 'mousedown') {
// Edge case for mousedown, drag select and mousedown again within selection on Chrome Windows to render caret
selection.placeCaretAt(e.clientX, e.clientY);
} else {
selection.setRng(selection.getRng());
}
}
});
}
}
/**
* Backspacing in FireFox/IE from a paragraph into a horizontal rule results in a floating text node because the
* browser just deletes the paragraph - the browser fails to merge the text node with a horizontal rule so it is
* left there. TinyMCE sees a floating text node and wraps it in a paragraph on the key up event (ForceBlocks.js
* addRootBlocks), meaning the action does nothing. With this code, FireFox/IE matche the behaviour of other
* browsers.
*
* It also fixes a bug on Firefox where it's impossible to delete HR elements.
*/
function removeHrOnBackspace() {
editor.on('keydown', function(e) {
if (!isDefaultPrevented(e) && e.keyCode === BACKSPACE) {
// Check if there is any HR elements this is faster since getRng on IE 7 & 8 is slow
if (!editor.getBody().getElementsByTagName('hr').length) {
return;
}
if (selection.isCollapsed() && selection.getRng(true).startOffset === 0) {
var node = selection.getNode();
var previousSibling = node.previousSibling;
if (node.nodeName == 'HR') {
dom.remove(node);
e.preventDefault();
return;
}
if (previousSibling && previousSibling.nodeName && previousSibling.nodeName.toLowerCase() === "hr") {
dom.remove(previousSibling);
e.preventDefault();
}
}
}
});
}
/**
* Firefox 3.x has an issue where the body element won't get proper focus if you click out
* side it's rectangle.
*/
function focusBody() {
// Fix for a focus bug in FF 3.x where the body element
// wouldn't get proper focus if the user clicked on the HTML element
if (!window.Range.prototype.getClientRects) { // Detect getClientRects got introduced in FF 4
editor.on('mousedown', function(e) {
if (!isDefaultPrevented(e) && e.target.nodeName === "HTML") {
var body = editor.getBody();
// Blur the body it's focused but not correctly focused
body.blur();
// Refocus the body after a little while
setTimeout(function() {
body.focus();
}, 0);
}
});
}
}
/**
* WebKit has a bug where it isn't possible to select image, hr or anchor elements
* by clicking on them so we need to fake that.
*/
function selectControlElements() {
editor.on('click', function(e) {
var target = e.target;
// Workaround for bug, http://bugs.webkit.org/show_bug.cgi?id=12250
// WebKit can't even do simple things like selecting an image
// Needs to be the setBaseAndExtend or it will fail to select floated images
if (/^(IMG|HR)$/.test(target.nodeName)) {
e.preventDefault();
selection.getSel().setBaseAndExtent(target, 0, target, 1);
editor.nodeChanged();
}
if (target.nodeName == 'A' && dom.hasClass(target, 'mce-item-anchor')) {
e.preventDefault();
selection.select(target);
}
});
}
/**
* Fixes a Gecko bug where the style attribute gets added to the wrong element when deleting between two block elements.
*
* Fixes do backspace/delete on this:
* <p>bla[ck</p><p style="color:red">r]ed</p>
*
* Would become:
* <p>bla|ed</p>
*
* Instead of:
* <p style="color:red">bla|ed</p>
*/
function removeStylesWhenDeletingAcrossBlockElements() {
function getAttributeApplyFunction() {
var template = dom.getAttribs(selection.getStart().cloneNode(false));
return function() {
var target = selection.getStart();
if (target !== editor.getBody()) {
dom.setAttrib(target, "style", null);
each(template, function(attr) {
target.setAttributeNode(attr.cloneNode(true));
});
}
};
}
function isSelectionAcrossElements() {
return !selection.isCollapsed() &&
dom.getParent(selection.getStart(), dom.isBlock) != dom.getParent(selection.getEnd(), dom.isBlock);
}
editor.on('keypress', function(e) {
var applyAttributes;
if (!isDefaultPrevented(e) && (e.keyCode == 8 || e.keyCode == 46) && isSelectionAcrossElements()) {
applyAttributes = getAttributeApplyFunction();
editor.getDoc().execCommand('delete', false, null);
applyAttributes();
e.preventDefault();
return false;
}
});
dom.bind(editor.getDoc(), 'cut', function(e) {
var applyAttributes;
if (!isDefaultPrevented(e) && isSelectionAcrossElements()) {
applyAttributes = getAttributeApplyFunction();
setTimeout(function() {
applyAttributes();
}, 0);
}
});
}
/**
* Screen readers on IE needs to have the role application set on the body.
*/
function ensureBodyHasRoleApplication() {
document.body.setAttribute("role", "application");
}
/**
* Backspacing into a table behaves differently depending upon browser type.
* Therefore, disable Backspace when cursor immediately follows a table.
*/
function disableBackspaceIntoATable() {
editor.on('keydown', function(e) {
if (!isDefaultPrevented(e) && e.keyCode === BACKSPACE) {
if (selection.isCollapsed() && selection.getRng(true).startOffset === 0) {
var previousSibling = selection.getNode().previousSibling;
if (previousSibling && previousSibling.nodeName && previousSibling.nodeName.toLowerCase() === "table") {
e.preventDefault();
return false;
}
}
}
});
}
/**
* Old IE versions can't properly render BR elements in PRE tags white in contentEditable mode. So this
* logic adds a \n before the BR so that it will get rendered.
*/
function addNewLinesBeforeBrInPre() {
// IE8+ rendering mode does the right thing with BR in PRE
if (getDocumentMode() > 7) {
return;
}
// Enable display: none in area and add a specific class that hides all BR elements in PRE to
// avoid the caret from getting stuck at the BR elements while pressing the right arrow key
setEditorCommandState('RespectVisibilityInDesign', true);
editor.contentStyles.push('.mceHideBrInPre pre br {display: none}');
dom.addClass(editor.getBody(), 'mceHideBrInPre');
// Adds a \n before all BR elements in PRE to get them visual
parser.addNodeFilter('pre', function(nodes) {
var i = nodes.length, brNodes, j, brElm, sibling;
while (i--) {
brNodes = nodes[i].getAll('br');
j = brNodes.length;
while (j--) {
brElm = brNodes[j];
// Add \n before BR in PRE elements on older IE:s so the new lines get rendered
sibling = brElm.prev;
if (sibling && sibling.type === 3 && sibling.value.charAt(sibling.value - 1) != '\n') {
sibling.value += '\n';
} else {
brElm.parent.insert(new Node('#text', 3), brElm, true).value = '\n';
}
}
}
});
// Removes any \n before BR elements in PRE since other browsers and in contentEditable=false mode they will be visible
serializer.addNodeFilter('pre', function(nodes) {
var i = nodes.length, brNodes, j, brElm, sibling;
while (i--) {
brNodes = nodes[i].getAll('br');
j = brNodes.length;
while (j--) {
brElm = brNodes[j];
sibling = brElm.prev;
if (sibling && sibling.type == 3) {
sibling.value = sibling.value.replace(/\r?\n$/, '');
}
}
}
});
}
/**
* Moves style width/height to attribute width/height when the user resizes an image on IE.
*/
function removePreSerializedStylesWhenSelectingControls() {
dom.bind(editor.getBody(), 'mouseup', function() {
var value, node = selection.getNode();
// Moved styles to attributes on IMG eements
if (node.nodeName == 'IMG') {
// Convert style width to width attribute
if ((value = dom.getStyle(node, 'width'))) {
dom.setAttrib(node, 'width', value.replace(/[^0-9%]+/g, ''));
dom.setStyle(node, 'width', '');
}
// Convert style height to height attribute
if ((value = dom.getStyle(node, 'height'))) {
dom.setAttrib(node, 'height', value.replace(/[^0-9%]+/g, ''));
dom.setStyle(node, 'height', '');
}
}
});
}
/**
* Removes a blockquote when backspace is pressed at the beginning of it.
*
* For example:
* <blockquote><p>|x</p></blockquote>
*
* Becomes:
* <p>|x</p>
*/
function removeBlockQuoteOnBackSpace() {
// Add block quote deletion handler
editor.on('keydown', function(e) {
var rng, container, offset, root, parent;
if (isDefaultPrevented(e) || e.keyCode != VK.BACKSPACE) {
return;
}
rng = selection.getRng();
container = rng.startContainer;
offset = rng.startOffset;
root = dom.getRoot();
parent = container;
if (!rng.collapsed || offset !== 0) {
return;
}
while (parent && parent.parentNode && parent.parentNode.firstChild == parent && parent.parentNode != root) {
parent = parent.parentNode;
}
// Is the cursor at the beginning of a blockquote?
if (parent.tagName === 'BLOCKQUOTE') {
// Remove the blockquote
editor.formatter.toggle('blockquote', null, parent);
// Move the caret to the beginning of container
rng = dom.createRng();
rng.setStart(container, 0);
rng.setEnd(container, 0);
selection.setRng(rng);
}
});
}
/**
* Sets various Gecko editing options on mouse down and before a execCommand to disable inline table editing that is broken etc.
*/
function setGeckoEditingOptions() {
function setOpts() {
editor._refreshContentEditable();
setEditorCommandState("StyleWithCSS", false);
setEditorCommandState("enableInlineTableEditing", false);
if (!settings.object_resizing) {
setEditorCommandState("enableObjectResizing", false);
}
}
if (!settings.readonly) {
editor.on('BeforeExecCommand MouseDown', setOpts);
}
}
/**
* Fixes a gecko link bug, when a link is placed at the end of block elements there is
* no way to move the caret behind the link. This fix adds a bogus br element after the link.
*
* For example this:
* <p><b><a href="#">x</a></b></p>
*
* Becomes this:
* <p><b><a href="#">x</a></b><br></p>
*/
function addBrAfterLastLinks() {
function fixLinks() {
each(dom.select('a'), function(node) {
var parentNode = node.parentNode, root = dom.getRoot();
if (parentNode.lastChild === node) {
while (parentNode && !dom.isBlock(parentNode)) {
if (parentNode.parentNode.lastChild !== parentNode || parentNode === root) {
return;
}
parentNode = parentNode.parentNode;
}
dom.add(parentNode, 'br', {'data-mce-bogus': 1});
}
});
}
editor.on('SetContent ExecCommand', function(e) {
if (e.type == "setcontent" || e.command === 'mceInsertLink') {
fixLinks();
}
});
}
/**
* WebKit will produce DIV elements here and there by default. But since TinyMCE uses paragraphs by
* default we want to change that behavior.
*/
function setDefaultBlockType() {
if (settings.forced_root_block) {
editor.on('init', function() {
setEditorCommandState('DefaultParagraphSeparator', settings.forced_root_block);
});
}
}
/**
* Removes ghost selections from images/tables on Gecko.
*/
function removeGhostSelection() {
editor.on('Undo Redo SetContent', function(e) {
if (!e.initial) {
editor.execCommand('mceRepaint');
}
});
}
/**
* Deletes the selected image on IE instead of navigating to previous page.
*/
function deleteControlItemOnBackSpace() {
editor.on('keydown', function(e) {
var rng;
if (!isDefaultPrevented(e) && e.keyCode == BACKSPACE) {
rng = editor.getDoc().selection.createRange();
if (rng && rng.item) {
e.preventDefault();
editor.undoManager.beforeChange();
dom.remove(rng.item(0));
editor.undoManager.add();
}
}
});
}
/**
* IE10 doesn't properly render block elements with the right height until you add contents to them.
* This fixes that by adding a padding-right to all empty text block elements.
* See: https://connect.microsoft.com/IE/feedback/details/743881
*/
function renderEmptyBlocksFix() {
var emptyBlocksCSS;
// IE10+
if (getDocumentMode() >= 10) {
emptyBlocksCSS = '';
each('p div h1 h2 h3 h4 h5 h6'.split(' '), function(name, i) {
emptyBlocksCSS += (i > 0 ? ',' : '') + name + ':empty';
});
editor.contentStyles.push(emptyBlocksCSS + '{padding-right: 1px !important}');
}
}
/**
* Old IE versions can't retain contents within noscript elements so this logic will store the contents
* as a attribute and the insert that value as it's raw text when the DOM is serialized.
*/
function keepNoScriptContents() {
if (getDocumentMode() < 9) {
parser.addNodeFilter('noscript', function(nodes) {
var i = nodes.length, node, textNode;
while (i--) {
node = nodes[i];
textNode = node.firstChild;
if (textNode) {
node.attr('data-mce-innertext', textNode.value);
}
}
});
serializer.addNodeFilter('noscript', function(nodes) {
var i = nodes.length, node, textNode, value;
while (i--) {
node = nodes[i];
textNode = nodes[i].firstChild;
if (textNode) {
textNode.value = Entities.decode(textNode.value);
} else {
// Old IE can't retain noscript value so an attribute is used to store it
value = node.attributes.map['data-mce-innertext'];
if (value) {
node.attr('data-mce-innertext', null);
textNode = new Node('#text', 3);
textNode.value = value;
textNode.raw = true;
node.append(textNode);
}
}
}
});
}
}
/**
* IE has an issue where you can't select/move the caret by clicking outside the body if the document is in standards mode.
*/
function fixCaretSelectionOfDocumentElementOnIe() {
var doc = dom.doc, body = doc.body, started, startRng, htmlElm;
// Return range from point or null if it failed
function rngFromPoint(x, y) {
var rng = body.createTextRange();
try {
rng.moveToPoint(x, y);
} catch (ex) {
// IE sometimes throws and exception, so lets just ignore it
rng = null;
}
return rng;
}
// Fires while the selection is changing
function selectionChange(e) {
var pointRng;
// Check if the button is down or not
if (e.button) {
// Create range from mouse position
pointRng = rngFromPoint(e.x, e.y);
if (pointRng) {
// Check if pointRange is before/after selection then change the endPoint
if (pointRng.compareEndPoints('StartToStart', startRng) > 0) {
pointRng.setEndPoint('StartToStart', startRng);
} else {
pointRng.setEndPoint('EndToEnd', startRng);
}
pointRng.select();
}
} else {
endSelection();
}
}
// Removes listeners
function endSelection() {
var rng = doc.selection.createRange();
// If the range is collapsed then use the last start range
if (startRng && !rng.item && rng.compareEndPoints('StartToEnd', rng) === 0) {
startRng.select();
}
dom.unbind(doc, 'mouseup', endSelection);
dom.unbind(doc, 'mousemove', selectionChange);
startRng = started = 0;
}
// Make HTML element unselectable since we are going to handle selection by hand
doc.documentElement.unselectable = true;
// Detect when user selects outside BODY
dom.bind(doc, 'mousedown contextmenu', function(e) {
if (e.target.nodeName === 'HTML') {
if (started) {
endSelection();
}
// Detect vertical scrollbar, since IE will fire a mousedown on the scrollbar and have target set as HTML
htmlElm = doc.documentElement;
if (htmlElm.scrollHeight > htmlElm.clientHeight) {
return;
}
started = 1;
// Setup start position
startRng = rngFromPoint(e.x, e.y);
if (startRng) {
// Listen for selection change events
dom.bind(doc, 'mouseup', endSelection);
dom.bind(doc, 'mousemove', selectionChange);
dom.getRoot().focus();
startRng.select();
}
}
});
}
/**
* Fixes selection issues where the caret can be placed between two inline elements like <b>a</b>|<b>b</b>
* this fix will lean the caret right into the closest inline element.
*/
function normalizeSelection() {
// Normalize selection for example <b>a</b><i>|a</i> becomes <b>a|</b><i>a</i> except for Ctrl+A since it selects everything
editor.on('keyup focusin mouseup', function(e) {
if (e.keyCode != 65 || !VK.metaKeyPressed(e)) {
selection.normalize();
}
}, true);
}
/**
* Forces Gecko to render a broken image icon if it fails to load an image.
*/
function showBrokenImageIcon() {
editor.contentStyles.push(
'img:-moz-broken {' +
'-moz-force-broken-image-icon:1;' +
'min-width:24px;' +
'min-height:24px' +
'}'
);
}
/**
* iOS has a bug where it's impossible to type if the document has a touchstart event
* bound and the user touches the document while having the on screen keyboard visible.
*
* The touch event moves the focus to the parent document while having the caret inside the iframe
* this fix moves the focus back into the iframe document.
*/
function restoreFocusOnKeyDown() {
if (!editor.inline) {
editor.on('keydown', function() {
if (document.activeElement == document.body) {
editor.getWin().focus();
}
});
}
}
/**
* IE 11 has an annoying issue where you can't move focus into the editor
* by clicking on the white area HTML element. We used to be able to to fix this with
* the fixCaretSelectionOfDocumentElementOnIe fix. But since M$ removed the selection
* object it's not possible anymore. So we need to hack in a ungly CSS to force the
* body to be at least 150px. If the user clicks the HTML element out side this 150px region
* we simply move the focus into the first paragraph. Not ideal since you loose the
* positioning of the caret but goot enough for most cases.
*/
function bodyHeight() {
if (!editor.inline) {
editor.contentStyles.push('body {min-height: 150px}');
editor.on('click', function(e) {
if (e.target.nodeName == 'HTML') {
editor.getBody().focus();
editor.selection.normalize();
editor.nodeChanged();
}
});
}
}
/**
* Firefox on Mac OS will move the browser back to the previous page if you press CMD+Left arrow.
* You might then loose all your work so we need to block that behavior and replace it with our own.
*/
function blockCmdArrowNavigation() {
if (Env.mac) {
editor.on('keydown', function(e) {
if (VK.metaKeyPressed(e) && (e.keyCode == 37 || e.keyCode == 39)) {
e.preventDefault();
editor.selection.getSel().modify('move', e.keyCode == 37 ? 'backward' : 'forward', 'word');
}
});
}
}
/**
* Disables the autolinking in IE 9+ this is then re-enabled by the autolink plugin.
*/
function disableAutoUrlDetect() {
setEditorCommandState("AutoUrlDetect", false);
}
/**
* IE 11 has a fantastic bug where it will produce two trailing BR elements to iframe bodies when
* the iframe is hidden by display: none on a parent container. The DOM is actually out of sync
* with innerHTML in this case. It's like IE adds shadow DOM BR elements that appears on innerHTML
* but not as the lastChild of the body. However is we add a BR element to the body then remove it
* it doesn't seem to add these BR elements makes sence right?!
*
* Example of what happens: <body>text</body> becomes <body>text<br><br></body>
*/
function doubleTrailingBrElements() {
if (!editor.inline) {
editor.on('focus blur beforegetcontent', function() {
var br = editor.dom.create('br');
editor.getBody().appendChild(br);
br.parentNode.removeChild(br);
}, true);
}
}
/**
* iOS 7.1 introduced two new bugs:
* 1) It's possible to open links within a contentEditable area by clicking on them.
* 2) If you hold down the finger it will display the link/image touch callout menu.
*/
function tapLinksAndImages() {
editor.on('click', function(e) {
var elm = e.target;
do {
if (elm.tagName === 'A') {
e.preventDefault();
return;
}
} while ((elm = elm.parentNode));
});
editor.contentStyles.push('.mce-content-body {-webkit-touch-callout: none}');
}
/**
* iOS Safari and possible other browsers have a bug where it won't fire
* a click event when a contentEditable is focused. This function fakes click events
* by using touchstart/touchend and measuring the time and distance travelled.
*/
function touchClickEvent() {
editor.on('touchstart', function(e) {
var elm, time, startTouch, changedTouches;
elm = e.target;
time = new Date().getTime();
changedTouches = e.changedTouches;
if (!changedTouches || changedTouches.length > 1) {
return;
}
startTouch = changedTouches[0];
editor.once('touchend', function(e) {
var endTouch = e.changedTouches[0], args;
if (new Date().getTime() - time > 500) {
return;
}
if (Math.abs(startTouch.clientX - endTouch.clientX) > 5) {
return;
}
if (Math.abs(startTouch.clientY - endTouch.clientY) > 5) {
return;
}
args = {
target: elm
};
each('pageX pageY clientX clientY screenX screenY'.split(' '), function(key) {
args[key] = endTouch[key];
});
args = editor.fire('click', args);
if (!args.isDefaultPrevented()) {
// iOS WebKit can't place the caret properly once
// you bind touch events so we need to do this manually
// TODO: Expand to the closest word? Touble tap still works.
editor.selection.placeCaretAt(endTouch.clientX, endTouch.clientY);
editor.nodeChanged();
}
});
});
}
/**
* WebKit has a bug where it will allow forms to be submitted if they are inside a contentEditable element.
* For example this: <form><button></form>
*/
function blockFormSubmitInsideEditor() {
editor.on('init', function() {
editor.dom.bind(editor.getBody(), 'submit', function(e) {
e.preventDefault();
});
});
}
/**
* Sometimes WebKit/Blink generates BR elements with the Apple-interchange-newline class.
*
* Scenario:
* 1) Create a table 2x2.
* 2) Select and copy cells A2-B2.
* 3) Paste and it will add BR element to table cell.
*/
function removeAppleInterchangeBrs() {
parser.addNodeFilter('br', function(nodes) {
var i = nodes.length;
while (i--) {
if (nodes[i].attr('class') == 'Apple-interchange-newline') {
nodes[i].remove();
}
}
});
}
// All browsers
removeBlockQuoteOnBackSpace();
emptyEditorWhenDeleting();
normalizeSelection();
// WebKit
if (isWebKit) {
cleanupStylesWhenDeleting();
inputMethodFocus();
selectControlElements();
setDefaultBlockType();
blockFormSubmitInsideEditor();
disableBackspaceIntoATable();
removeAppleInterchangeBrs();
touchClickEvent();
// iOS
if (Env.iOS) {
restoreFocusOnKeyDown();
bodyHeight();
tapLinksAndImages();
} else {
selectAll();
}
}
// IE
if (isIE && Env.ie < 11) {
removeHrOnBackspace();
ensureBodyHasRoleApplication();
addNewLinesBeforeBrInPre();
removePreSerializedStylesWhenSelectingControls();
deleteControlItemOnBackSpace();
renderEmptyBlocksFix();
keepNoScriptContents();
fixCaretSelectionOfDocumentElementOnIe();
}
if (Env.ie >= 11) {
bodyHeight();
doubleTrailingBrElements();
disableBackspaceIntoATable();
}
if (Env.ie) {
selectAll();
disableAutoUrlDetect();
}
// Gecko
if (isGecko) {
removeHrOnBackspace();
focusBody();
removeStylesWhenDeletingAcrossBlockElements();
setGeckoEditingOptions();
addBrAfterLastLinks();
removeGhostSelection();
showBrokenImageIcon();
blockCmdArrowNavigation();
disableBackspaceIntoATable();
}
};
});