/* Copyright © 2011-2013 by Neil Jenkins. MIT Licensed. */
( function ( doc ) {
"use strict";
/*global doc, navigator */
var DOCUMENT_POSITION_PRECEDING = 2; // Node.DOCUMENT_POSITION_PRECEDING
var ELEMENT_NODE = 1; // Node.ELEMENT_NODE;
var TEXT_NODE = 3; // Node.TEXT_NODE;
var SHOW_ELEMENT = 1; // NodeFilter.SHOW_ELEMENT;
var SHOW_TEXT = 4; // NodeFilter.SHOW_TEXT;
var FILTER_ACCEPT = 1; // NodeFilter.FILTER_ACCEPT;
var FILTER_SKIP = 3; // NodeFilter.FILTER_SKIP;
var START_TO_START = 0; // Range.START_TO_START
var START_TO_END = 1; // Range.START_TO_END
var END_TO_END = 2; // Range.END_TO_END
var END_TO_START = 3; // Range.END_TO_START
var win = doc.defaultView;
var body = doc.body;
var ua = navigator.userAgent;
var isGecko = /Gecko\//.test( ua );
var isIE = /Trident\//.test( ua );
var isIE8 = ( win.ie === 8 );
var isIOS = /iP(?:ad|hone|od)/.test( ua );
var isOpera = !!win.opera;
var isWebKit = /WebKit\//.test( ua );
var useTextFixer = isIE || isOpera;
var cantFocusEmptyTextNodes = isIE || isWebKit;
var losesSelectionOnBlur = isIE;
var notWS = /\S/;
var indexOf = Array.prototype.indexOf;
/*global FILTER_ACCEPT */
/*jshint strict:false */
/*
Native TreeWalker is buggy in IE and Opera:
* IE9/10 sometimes throw errors when calling TreeWalker#nextNode or
TreeWalker#previousNode. No way to feature detect this.
* Some versions of Opera have a bug in TreeWalker#previousNode which makes
it skip to the wrong node.
Rather than risk further bugs, it's easiest just to implement our own
(subset) of the spec in all browsers.
*/
var typeToBitArray = {
// ELEMENT_NODE
1: 1,
// ATTRIBUTE_NODE
2: 2,
// TEXT_NODE
3: 4,
// COMMENT_NODE
8: 128,
// DOCUMENT_NODE
9: 256,
// DOCUMENT_FRAGMENT_NODE
11: 1024
};
function TreeWalker ( root, nodeType, filter ) {
this.root = this.currentNode = root;
this.nodeType = nodeType;
this.filter = filter;
}
TreeWalker.prototype.nextNode = function () {
var current = this.currentNode,
root = this.root,
nodeType = this.nodeType,
filter = this.filter,
node;
while ( true ) {
node = current.firstChild;
while ( !node && current ) {
if ( current === root ) {
break;
}
node = current.nextSibling;
if ( !node ) { current = current.parentNode; }
}
if ( !node ) {
return null;
}
if ( ( typeToBitArray[ node.nodeType ] & nodeType ) &&
filter( node ) === FILTER_ACCEPT ) {
this.currentNode = node;
return node;
}
current = node;
}
};
TreeWalker.prototype.previousNode = function () {
var current = this.currentNode,
root = this.root,
nodeType = this.nodeType,
filter = this.filter,
node;
while ( true ) {
if ( current === root ) {
return null;
}
node = current.previousSibling;
if ( node ) {
while ( current = node.lastChild ) {
node = current;
}
} else {
node = current.parentNode;
}
if ( !node ) {
return null;
}
if ( ( typeToBitArray[ node.nodeType ] & nodeType ) &&
filter( node ) === FILTER_ACCEPT ) {
this.currentNode = node;
return node;
}
current = node;
}
};
/*global
ELEMENT_NODE,
TEXT_NODE,
SHOW_ELEMENT,
FILTER_ACCEPT,
FILTER_SKIP,
doc,
isOpera,
useTextFixer,
cantFocusEmptyTextNodes,
TreeWalker,
Text,
setPlaceholderTextNode
*/
/*jshint strict:false */
var inlineNodeNames = /^(?:#text|A(?:BBR|CRONYM)?|B(?:R|D[IO])?|C(?:ITE|ODE)|D(?:FN|EL)|EM|FONT|HR|I(?:NPUT|MG|NS)?|KBD|Q|R(?:P|T|UBY)|S(?:U[BP]|PAN|TRONG|AMP)|U)$/;
var leafNodeNames = {
BR: 1,
IMG: 1,
INPUT: 1
};
function every ( nodeList, fn ) {
var l = nodeList.length;
while ( l-- ) {
if ( !fn( nodeList[l] ) ) {
return false;
}
}
return true;
}
// ---
function hasTagAttributes ( node, tag, attributes ) {
if ( node.nodeName !== tag ) {
return false;
}
for ( var attr in attributes ) {
if ( node.getAttribute( attr ) !== attributes[ attr ] ) {
return false;
}
}
return true;
}
function areAlike ( node, node2 ) {
return (
node.nodeType === node2.nodeType &&
node.nodeName === node2.nodeName &&
node.className === node2.className &&
( ( !node.style && !node2.style ) ||
node.style.cssText === node2.style.cssText )
);
}
function isLeaf ( node ) {
return node.nodeType === ELEMENT_NODE &&
!!leafNodeNames[ node.nodeName ];
}
function isInline ( node ) {
return inlineNodeNames.test( node.nodeName );
}
function isBlock ( node ) {
return node.nodeType === ELEMENT_NODE &&
!isInline( node ) && every( node.childNodes, isInline );
}
function isContainer ( node ) {
return node.nodeType === ELEMENT_NODE &&
!isInline( node ) && !isBlock( node );
}
function acceptIfBlock ( el ) {
return isBlock( el ) ? FILTER_ACCEPT : FILTER_SKIP;
}
function getBlockWalker ( node ) {
var doc = node.ownerDocument,
walker = new TreeWalker(
doc.body, SHOW_ELEMENT, acceptIfBlock, false );
walker.currentNode = node;
return walker;
}
function getPreviousBlock ( node ) {
return getBlockWalker( node ).previousNode();
}
function getNextBlock ( node ) {
return getBlockWalker( node ).nextNode();
}
function getNearest ( node, tag, attributes ) {
do {
if ( hasTagAttributes( node, tag, attributes ) ) {
return node;
}
} while ( node = node.parentNode );
return null;
}
function getPath ( node ) {
var parent = node.parentNode,
path, id, className, classNames;
if ( !parent || node.nodeType !== ELEMENT_NODE ) {
path = parent ? getPath( parent ) : '';
} else {
path = getPath( parent );
path += ( path ? '>' : '' ) + node.nodeName;
if ( id = node.id ) {
path += '#' + id;
}
if ( className = node.className.trim() ) {
classNames = className.split( /\s\s*/ );
classNames.sort();
path += '.';
path += classNames.join( '.' );
}
}
return path;
}
function getLength ( node ) {
var nodeType = node.nodeType;
return nodeType === ELEMENT_NODE ?
node.childNodes.length : node.length || 0;
}
function detach ( node ) {
var parent = node.parentNode;
if ( parent ) {
parent.removeChild( node );
}
return node;
}
function replaceWith ( node, node2 ) {
var parent = node.parentNode;
if ( parent ) {
parent.replaceChild( node2, node );
}
}
function empty ( node ) {
var frag = node.ownerDocument.createDocumentFragment(),
childNodes = node.childNodes,
l = childNodes ? childNodes.length : 0;
while ( l-- ) {
frag.appendChild( node.firstChild );
}
return frag;
}
function fixCursor ( node ) {
// In Webkit and Gecko, block level elements are collapsed and
// unfocussable if they have no content. To remedy this, a
must be
// inserted. In Opera and IE, we just need a textnode in order for the
// cursor to appear.
var doc = node.ownerDocument,
root = node,
fixer, child;
if ( node.nodeName === 'BODY' ) {
if ( !( child = node.firstChild ) || child.nodeName === 'BR' ) {
fixer = doc.createElement( 'DIV' );
if ( child ) {
node.replaceChild( fixer, child );
}
else {
node.appendChild( fixer );
}
node = fixer;
fixer = null;
}
}
if ( isInline( node ) ) {
if ( !node.firstChild ) {
if ( cantFocusEmptyTextNodes ) {
fixer = doc.createTextNode( '\u200B' );
setPlaceholderTextNode( fixer );
} else {
fixer = doc.createTextNode( '' );
}
}
} else {
if ( useTextFixer ) {
while ( node.nodeType !== TEXT_NODE && !isLeaf( node ) ) {
child = node.firstChild;
if ( !child ) {
fixer = doc.createTextNode( '' );
break;
}
node = child;
}
if ( node.nodeType === TEXT_NODE ) {
// Opera will collapse the block element if it contains
// just spaces (but not if it contains no data at all).
if ( /^ +$/.test( node.data ) ) {
node.data = '';
}
} else if ( isLeaf( node ) ) {
node.parentNode.insertBefore( doc.createTextNode( '' ), node );
}
}
else if ( !node.querySelector( 'BR' ) ) {
fixer = doc.createElement( 'BR' );
while ( ( child = node.lastElementChild ) && !isInline( child ) ) {
node = child;
}
}
}
if ( fixer ) {
node.appendChild( fixer );
}
return root;
}
function split ( node, offset, stopNode ) {
var nodeType = node.nodeType,
parent, clone, next;
if ( nodeType === TEXT_NODE && node !== stopNode ) {
return split( node.parentNode, node.splitText( offset ), stopNode );
}
if ( nodeType === ELEMENT_NODE ) {
if ( typeof( offset ) === 'number' ) {
offset = offset < node.childNodes.length ?
node.childNodes[ offset ] : null;
}
if ( node === stopNode ) {
return offset;
}
// Clone node without children
parent = node.parentNode,
clone = node.cloneNode( false );
// Add right-hand siblings to the clone
while ( offset ) {
next = offset.nextSibling;
clone.appendChild( offset );
offset = next;
}
// DO NOT NORMALISE. This may undo the fixCursor() call
// of a node lower down the tree!
// We need something in the element in order for the cursor to appear.
fixCursor( node );
fixCursor( clone );
// Inject clone after original node
if ( next = node.nextSibling ) {
parent.insertBefore( clone, next );
} else {
parent.appendChild( clone );
}
// Keep on splitting up the tree
return split( parent, clone, stopNode );
}
return offset;
}
function mergeInlines ( node, range ) {
if ( node.nodeType !== ELEMENT_NODE ) {
return;
}
var children = node.childNodes,
l = children.length,
frags = [],
child, prev, len;
while ( l-- ) {
child = children[l];
prev = l && children[ l - 1 ];
if ( l && isInline( child ) && areAlike( child, prev ) &&
!leafNodeNames[ child.nodeName ] ) {
if ( range.startContainer === child ) {
range.startContainer = prev;
range.startOffset += getLength( prev );
}
if ( range.endContainer === child ) {
range.endContainer = prev;
range.endOffset += getLength( prev );
}
if ( range.startContainer === node ) {
if ( range.startOffset > l ) {
range.startOffset -= 1;
}
else if ( range.startOffset === l ) {
range.startContainer = prev;
range.startOffset = getLength( prev );
}
}
if ( range.endContainer === node ) {
if ( range.endOffset > l ) {
range.endOffset -= 1;
}
else if ( range.endOffset === l ) {
range.endContainer = prev;
range.endOffset = getLength( prev );
}
}
detach( child );
if ( child.nodeType === TEXT_NODE ) {
prev.appendData( child.data.replace( /\u200B/g, '' ) );
}
else {
frags.push( empty( child ) );
}
}
else if ( child.nodeType === ELEMENT_NODE ) {
len = frags.length;
while ( len-- ) {
child.appendChild( frags.pop() );
}
mergeInlines( child, range );
}
}
}
function mergeWithBlock ( block, next, range ) {
var container = next,
last, offset, _range;
while ( container.parentNode.childNodes.length === 1 ) {
container = container.parentNode;
}
detach( container );
offset = block.childNodes.length;
// Remove extra
fixer if present.
last = block.lastChild;
if ( last && last.nodeName === 'BR' ) {
block.removeChild( last );
offset -= 1;
}
_range = {
startContainer: block,
startOffset: offset,
endContainer: block,
endOffset: offset
};
block.appendChild( empty( next ) );
mergeInlines( block, _range );
range.setStart( _range.startContainer, _range.startOffset );
range.collapse( true );
// Opera inserts a BR if you delete the last piece of text
// in a block-level element. Unfortunately, it then gets
// confused when setting the selection subsequently and
// refuses to accept the range that finishes just before the
// BR. Removing the BR fixes the bug.
// Steps to reproduce bug: Type "a-b-c" (where - is return)
// then backspace twice. The cursor goes to the top instead
// of after "b".
if ( isOpera && ( last = block.lastChild ) && last.nodeName === 'BR' ) {
block.removeChild( last );
}
}
function mergeContainers ( node ) {
var prev = node.previousSibling,
first = node.firstChild;
if ( prev && areAlike( prev, node ) && isContainer( prev ) ) {
detach( node );
prev.appendChild( empty( node ) );
if ( first ) {
mergeContainers( first );
}
}
}
function createElement ( tag, props, children ) {
var el = doc.createElement( tag ),
attr, i, l;
if ( props instanceof Array ) {
children = props;
props = null;
}
if ( props ) {
for ( attr in props ) {
el.setAttribute( attr, props[ attr ] );
}
}
if ( children ) {
for ( i = 0, l = children.length; i < l; i += 1 ) {
el.appendChild( children[i] );
}
}
return el;
}
// Fix IE8/9's buggy implementation of Text#splitText.
// If the split is at the end of the node, it doesn't insert the newly split
// node into the document, and sets its value to undefined rather than ''.
// And even if the split is not at the end, the original node is removed from
// the document and replaced by another, rather than just having its data
// shortened.
if ( function () {
var div = doc.createElement( 'div' ),
text = doc.createTextNode( '12' );
div.appendChild( text );
text.splitText( 2 );
return div.childNodes.length !== 2;
}() ) {
Text.prototype.splitText = function ( offset ) {
var afterSplit = this.ownerDocument.createTextNode(
this.data.slice( offset ) ),
next = this.nextSibling,
parent = this.parentNode,
toDelete = this.length - offset;
if ( next ) {
parent.insertBefore( afterSplit, next );
} else {
parent.appendChild( afterSplit );
}
if ( toDelete ) {
this.deleteData( offset, toDelete );
}
return afterSplit;
};
}
/*global
ELEMENT_NODE,
TEXT_NODE,
SHOW_TEXT,
FILTER_ACCEPT,
START_TO_START,
START_TO_END,
END_TO_END,
END_TO_START,
indexOf,
TreeWalker,
isLeaf,
isInline,
isBlock,
getPreviousBlock,
getNextBlock,
getLength,
fixCursor,
split,
mergeWithBlock,
mergeContainers,
Range
*/
/*jshint strict:false */
var getNodeBefore = function ( node, offset ) {
var children = node.childNodes;
while ( offset && node.nodeType === ELEMENT_NODE ) {
node = children[ offset - 1 ];
children = node.childNodes;
offset = children.length;
}
return node;
};
var getNodeAfter = function ( node, offset ) {
if ( node.nodeType === ELEMENT_NODE ) {
var children = node.childNodes;
if ( offset < children.length ) {
node = children[ offset ];
} else {
while ( node && !node.nextSibling ) {
node = node.parentNode;
}
if ( node ) { node = node.nextSibling; }
}
}
return node;
};
var RangePrototype = Range.prototype;
RangePrototype.forEachTextNode = function ( fn ) {
var range = this.cloneRange();
range.moveBoundariesDownTree();
var startContainer = range.startContainer,
endContainer = range.endContainer,
root = range.commonAncestorContainer,
walker = new TreeWalker(
root, SHOW_TEXT, function ( node ) {
return FILTER_ACCEPT;
}, false ),
textnode = walker.currentNode = startContainer;
while ( !fn( textnode, range ) &&
textnode !== endContainer &&
( textnode = walker.nextNode() ) ) {}
};
RangePrototype.getTextContent = function () {
var textContent = '';
this.forEachTextNode( function ( textnode, range ) {
var value = textnode.data;
if ( value && ( /\S/.test( value ) ) ) {
if ( textnode === range.endContainer ) {
value = value.slice( 0, range.endOffset );
}
if ( textnode === range.startContainer ) {
value = value.slice( range.startOffset );
}
textContent += value;
}
});
return textContent;
};
// ---
RangePrototype._insertNode = function ( node ) {
// Insert at start.
var startContainer = this.startContainer,
startOffset = this.startOffset,
endContainer = this.endContainer,
endOffset = this.endOffset,
parent, children, childCount, afterSplit;
// If part way through a text node, split it.
if ( startContainer.nodeType === TEXT_NODE ) {
parent = startContainer.parentNode;
children = parent.childNodes;
if ( startOffset === startContainer.length ) {
startOffset = indexOf.call( children, startContainer ) + 1;
if ( this.collapsed ) {
endContainer = parent;
endOffset = startOffset;
}
} else {
if ( startOffset ) {
afterSplit = startContainer.splitText( startOffset );
if ( endContainer === startContainer ) {
endOffset -= startOffset;
endContainer = afterSplit;
}
else if ( endContainer === parent ) {
endOffset += 1;
}
startContainer = afterSplit;
}
startOffset = indexOf.call( children, startContainer );
}
startContainer = parent;
} else {
children = startContainer.childNodes;
}
childCount = children.length;
if ( startOffset === childCount) {
startContainer.appendChild( node );
} else {
startContainer.insertBefore( node, children[ startOffset ] );
}
if ( startContainer === endContainer ) {
endOffset += children.length - childCount;
}
this.setStart( startContainer, startOffset );
this.setEnd( endContainer, endOffset );
return this;
};
RangePrototype._extractContents = function ( common ) {
var startContainer = this.startContainer,
startOffset = this.startOffset,
endContainer = this.endContainer,
endOffset = this.endOffset;
if ( !common ) {
common = this.commonAncestorContainer;
}
if ( common.nodeType === TEXT_NODE ) {
common = common.parentNode;
}
var endNode = split( endContainer, endOffset, common ),
startNode = split( startContainer, startOffset, common ),
frag = common.ownerDocument.createDocumentFragment(),
next;
// End node will be null if at end of child nodes list.
while ( startNode !== endNode ) {
next = startNode.nextSibling;
frag.appendChild( startNode );
startNode = next;
}
this.setStart( common, endNode ?
indexOf.call( common.childNodes, endNode ) :
common.childNodes.length );
this.collapse( true );
fixCursor( common );
return frag;
};
RangePrototype._deleteContents = function () {
// Move boundaries up as much as possible to reduce need to split.
this.moveBoundariesUpTree();
// Remove selected range
this._extractContents();
// If we split into two different blocks, merge the blocks.
var startBlock = this.getStartBlock(),
endBlock = this.getEndBlock();
if ( startBlock && endBlock && startBlock !== endBlock ) {
mergeWithBlock( startBlock, endBlock, this );
}
// Ensure block has necessary children
if ( startBlock ) {
fixCursor( startBlock );
}
// Ensure body has a block-level element in it.
var body = this.endContainer.ownerDocument.body,
child = body.firstChild;
if ( !child || child.nodeName === 'BR' ) {
fixCursor( body );
this.selectNodeContents( body.firstChild );
}
// Ensure valid range (must have only block or inline containers)
var isCollapsed = this.collapsed;
this.moveBoundariesDownTree();
if ( isCollapsed ) {
// Collapse
this.collapse( true );
}
return this;
};
// ---
RangePrototype.insertTreeFragment = function ( frag ) {
// Check if it's all inline content
var allInline = true,
children = frag.childNodes,
l = children.length;
while ( l-- ) {
if ( !isInline( children[l] ) ) {
allInline = false;
break;
}
}
// Delete any selected content
if ( !this.collapsed ) {
this._deleteContents();
}
// Move range down into text ndoes
this.moveBoundariesDownTree();
// If inline, just insert at the current position.
if ( allInline ) {
this._insertNode( frag );
this.collapse( false );
}
// Otherwise, split up to body, insert inline before and after split
// and insert block in between split, then merge containers.
else {
var nodeAfterSplit = split( this.startContainer, this.startOffset,
this.startContainer.ownerDocument.body ),
nodeBeforeSplit = nodeAfterSplit.previousSibling,
startContainer = nodeBeforeSplit,
startOffset = startContainer.childNodes.length,
endContainer = nodeAfterSplit,
endOffset = 0,
parent = nodeAfterSplit.parentNode,
child, node;
while ( ( child = startContainer.lastChild ) &&
child.nodeType === ELEMENT_NODE &&
child.nodeName !== 'BR' ) {
startContainer = child;
startOffset = startContainer.childNodes.length;
}
while ( ( child = endContainer.firstChild ) &&
child.nodeType === ELEMENT_NODE &&
child.nodeName !== 'BR' ) {
endContainer = child;
}
while ( ( child = frag.firstChild ) && isInline( child ) ) {
startContainer.appendChild( child );
}
while ( ( child = frag.lastChild ) && isInline( child ) ) {
endContainer.insertBefore( child, endContainer.firstChild );
endOffset += 1;
}
// Fix cursor then insert block(s)
node = frag;
while ( node = getNextBlock( node ) ) {
fixCursor( node );
}
parent.insertBefore( frag, nodeAfterSplit );
// Remove empty nodes created by split and merge inserted containers
// with edges of split
node = nodeAfterSplit.previousSibling;
if ( !nodeAfterSplit.textContent ) {
parent.removeChild( nodeAfterSplit );
} else {
mergeContainers( nodeAfterSplit );
}
if ( !nodeAfterSplit.parentNode ) {
endContainer = node;
endOffset = getLength( endContainer );
}
if ( !nodeBeforeSplit.textContent) {
startContainer = nodeBeforeSplit.nextSibling;
startOffset = 0;
parent.removeChild( nodeBeforeSplit );
} else {
mergeContainers( nodeBeforeSplit );
}
this.setStart( startContainer, startOffset );
this.setEnd( endContainer, endOffset );
this.moveBoundariesDownTree();
}
};
// ---
RangePrototype.containsNode = function ( node, partial ) {
var range = this,
nodeRange = node.ownerDocument.createRange();
nodeRange.selectNode( node );
if ( partial ) {
// Node must not finish before range starts or start after range
// finishes.
var nodeEndBeforeStart = ( range.compareBoundaryPoints(
END_TO_START, nodeRange ) > -1 ),
nodeStartAfterEnd = ( range.compareBoundaryPoints(
START_TO_END, nodeRange ) < 1 );
return ( !nodeEndBeforeStart && !nodeStartAfterEnd );
}
else {
// Node must start after range starts and finish before range
// finishes
var nodeStartAfterStart = ( range.compareBoundaryPoints(
START_TO_START, nodeRange ) < 1 ),
nodeEndBeforeEnd = ( range.compareBoundaryPoints(
END_TO_END, nodeRange ) > -1 );
return ( nodeStartAfterStart && nodeEndBeforeEnd );
}
};
RangePrototype.moveBoundariesDownTree = function () {
var startContainer = this.startContainer,
startOffset = this.startOffset,
endContainer = this.endContainer,
endOffset = this.endOffset,
child;
while ( startContainer.nodeType !== TEXT_NODE ) {
child = startContainer.childNodes[ startOffset ];
if ( !child || isLeaf( child ) ) {
break;
}
startContainer = child;
startOffset = 0;
}
if ( endOffset ) {
while ( endContainer.nodeType !== TEXT_NODE ) {
child = endContainer.childNodes[ endOffset - 1 ];
if ( !child || isLeaf( child ) ) {
break;
}
endContainer = child;
endOffset = getLength( endContainer );
}
} else {
while ( endContainer.nodeType !== TEXT_NODE ) {
child = endContainer.firstChild;
if ( !child || isLeaf( child ) ) {
break;
}
endContainer = child;
}
}
// If collapsed, this algorithm finds the nearest text node positions
// *outside* the range rather than inside, but also it flips which is
// assigned to which.
if ( this.collapsed ) {
this.setStart( endContainer, endOffset );
this.setEnd( startContainer, startOffset );
} else {
this.setStart( startContainer, startOffset );
this.setEnd( endContainer, endOffset );
}
return this;
};
RangePrototype.moveBoundariesUpTree = function ( common ) {
var startContainer = this.startContainer,
startOffset = this.startOffset,
endContainer = this.endContainer,
endOffset = this.endOffset,
parent;
if ( !common ) {
common = this.commonAncestorContainer;
}
while ( startContainer !== common && !startOffset ) {
parent = startContainer.parentNode;
startOffset = indexOf.call( parent.childNodes, startContainer );
startContainer = parent;
}
while ( endContainer !== common &&
endOffset === getLength( endContainer ) ) {
parent = endContainer.parentNode;
endOffset = indexOf.call( parent.childNodes, endContainer ) + 1;
endContainer = parent;
}
this.setStart( startContainer, startOffset );
this.setEnd( endContainer, endOffset );
return this;
};
// Returns the first block at least partially contained by the range,
// or null if no block is contained by the range.
RangePrototype.getStartBlock = function () {
var container = this.startContainer,
block;
// If inline, get the containing block.
if ( isInline( container ) ) {
block = getPreviousBlock( container );
} else if ( isBlock( container ) ) {
block = container;
} else {
block = getNodeBefore( container, this.startOffset );
block = getNextBlock( block );
}
// Check the block actually intersects the range
return block && this.containsNode( block, true ) ? block : null;
};
// Returns the last block at least partially contained by the range,
// or null if no block is contained by the range.
RangePrototype.getEndBlock = function () {
var container = this.endContainer,
block, child;
// If inline, get the containing block.
if ( isInline( container ) ) {
block = getPreviousBlock( container );
} else if ( isBlock( container ) ) {
block = container;
} else {
block = getNodeAfter( container, this.endOffset );
if ( !block ) {
block = container.ownerDocument.body;
while ( child = block.lastChild ) {
block = child;
}
}
block = getPreviousBlock( block );
}
// Check the block actually intersects the range
return block && this.containsNode( block, true ) ? block : null;
};
RangePrototype.startsAtBlockBoundary = function () {
var startContainer = this.startContainer,
startOffset = this.startOffset,
parent, child;
while ( isInline( startContainer ) ) {
if ( startOffset ) {
return false;
}
parent = startContainer.parentNode;
startOffset = indexOf.call( parent.childNodes, startContainer );
startContainer = parent;
}
// Skip empty text nodes and
s.
while ( startOffset &&
( child = startContainer.childNodes[ startOffset - 1 ] ) &&
( child.data === '' || child.nodeName === 'BR' ) ) {
startOffset -= 1;
}
return !startOffset;
};
RangePrototype.endsAtBlockBoundary = function () {
var endContainer = this.endContainer,
endOffset = this.endOffset,
length = getLength( endContainer ),
parent, child;
while ( isInline( endContainer ) ) {
if ( endOffset !== length ) {
return false;
}
parent = endContainer.parentNode;
endOffset = indexOf.call( parent.childNodes, endContainer ) + 1;
endContainer = parent;
length = endContainer.childNodes.length;
}
// Skip empty text nodes and
s.
while ( endOffset < length &&
( child = endContainer.childNodes[ endOffset ] ) &&
( child.data === '' || child.nodeName === 'BR' ) ) {
endOffset += 1;
}
return endOffset === length;
};
RangePrototype.expandToBlockBoundaries = function () {
var start = this.getStartBlock(),
end = this.getEndBlock(),
parent;
if ( start && end ) {
parent = start.parentNode;
this.setStart( parent, indexOf.call( parent.childNodes, start ) );
parent = end.parentNode;
this.setEnd( parent, indexOf.call( parent.childNodes, end ) + 1 );
}
return this;
};
/*global
DOCUMENT_POSITION_PRECEDING,
ELEMENT_NODE,
TEXT_NODE,
SHOW_ELEMENT,
SHOW_TEXT,
FILTER_ACCEPT,
FILTER_SKIP,
doc,
win,
body,
isGecko,
isIE,
isIE8,
isIOS,
isOpera,
useTextFixer,
cantFocusEmptyTextNodes,
losesSelectionOnBlur,
notWS,
indexOf,
TreeWalker,
hasTagAttributes,
isLeaf,
isInline,
isBlock,
isContainer,
getPreviousBlock,
getNextBlock,
getNearest,
getPath,
getLength,
detach,
replaceWith,
empty,
fixCursor,
split,
mergeInlines,
mergeWithBlock,
mergeContainers,
createElement,
Range,
top,
console,
setTimeout
*/
/*jshint strict:false */
var editor;
// --- Events.js ---
// Subscribing to these events won't automatically add a listener to the
// document node, since these events are fired in a custom manner by the
// editor code.
var customEvents = {
focus: 1, blur: 1,
pathChange: 1, select: 1, input: 1, undoStateChange: 1
};
var events = {};
var fireEvent = function ( type, event ) {
var handlers = events[ type ],
i, l, obj;
if ( handlers ) {
if ( !event ) {
event = {};
}
if ( event.type !== type ) {
event.type = type;
}
for ( i = 0, l = handlers.length; i < l; i += 1 ) {
obj = handlers[i];
try {
if ( obj.handleEvent ) {
obj.handleEvent( event );
} else {
obj( event );
}
} catch ( error ) {
editor.didError( error );
}
}
}
};
var propagateEvent = function ( event ) {
fireEvent( event.type, event );
};
var addEventListener = function ( type, fn ) {
var handlers = events[ type ];
if ( !handlers ) {
handlers = events[ type ] = [];
if ( !customEvents[ type ] ) {
doc.addEventListener( type, propagateEvent, false );
}
}
handlers.push( fn );
};
var removeEventListener = function ( type, fn ) {
var handlers = events[ type ],
l;
if ( handlers ) {
l = handlers.length;
while ( l-- ) {
if ( handlers[l] === fn ) {
handlers.splice( l, 1 );
}
}
if ( !handlers.length ) {
delete events[ type ];
if ( !customEvents[ type ] ) {
doc.removeEventListener( type, propagateEvent, false );
}
}
}
};
// --- Selection and Path ---
var createRange = function ( range, startOffset, endContainer, endOffset ) {
if ( range instanceof Range ) {
return range.cloneRange();
}
var domRange = doc.createRange();
domRange.setStart( range, startOffset );
if ( endContainer ) {
domRange.setEnd( endContainer, endOffset );
} else {
domRange.setEnd( range, startOffset );
}
return domRange;
};
var sel = win.getSelection();
var lastSelection = null;
var setSelection = function ( range ) {
if ( range ) {
// iOS bug: if you don't focus the iframe before setting the
// selection, you can end up in a state where you type but the input
// doesn't get directed into the contenteditable area but is instead
// lost in a black hole. Very strange.
if ( isIOS ) {
win.focus();
}
sel.removeAllRanges();
sel.addRange( range );
}
};
var getSelection = function () {
if ( sel.rangeCount ) {
lastSelection = sel.getRangeAt( 0 ).cloneRange();
var startContainer = lastSelection.startContainer,
endContainer = lastSelection.endContainer;
// FF sometimes throws an error reading the isLeaf property. Let's
// catch and log it to see if we can find what's going on.
try {
// FF can return the selection as being inside an ![]()
. WTF?
if ( startContainer && isLeaf( startContainer ) ) {
lastSelection.setStartBefore( startContainer );
}
if ( endContainer && isLeaf( endContainer ) ) {
lastSelection.setEndBefore( endContainer );
}
} catch ( error ) {
editor.didError({
name: 'Squire#getSelection error',
message: 'Starts: ' + startContainer.nodeName +
'\nEnds: ' + endContainer.nodeName
});
}
}
return lastSelection;
};
// IE loses selection state of iframe on blur, so make sure we
// cache it just before it loses focus.
if ( losesSelectionOnBlur ) {
win.addEventListener( 'beforedeactivate', getSelection, true );
}
// --- Workaround for browsers that can't focus empty text nodes ---
// WebKit bug: https://bugs.webkit.org/show_bug.cgi?id=15256
var placeholderTextNode = null;
var mayRemovePlaceholder = true;
var willEnablePlaceholderRemoval = false;
var enablePlaceholderRemoval = function () {
mayRemovePlaceholder = true;
willEnablePlaceholderRemoval = false;
};
var removePlaceholderTextNode = function () {
if ( !mayRemovePlaceholder ) { return; }
var node = placeholderTextNode,
index;
placeholderTextNode = null;
if ( node.parentNode ) {
while ( ( index = node.data.indexOf( '\u200B' ) ) > -1 ) {
node.deleteData( index, 1 );
}
if ( !node.data && !node.nextSibling && !node.previousSibling &&
isInline( node.parentNode ) ) {
detach( node.parentNode );
}
}
};
var setPlaceholderTextNode = function ( node ) {
if ( placeholderTextNode ) {
mayRemovePlaceholder = true;
removePlaceholderTextNode();
}
if ( !willEnablePlaceholderRemoval ) {
setTimeout( enablePlaceholderRemoval, 0 );
willEnablePlaceholderRemoval = true;
}
mayRemovePlaceholder = false;
placeholderTextNode = node;
};
// --- Path change events ---
var lastAnchorNode;
var lastFocusNode;
var path = '';
var updatePath = function ( range, force ) {
if ( placeholderTextNode && !force ) {
removePlaceholderTextNode( range );
}
var anchor = range.startContainer,
focus = range.endContainer,
newPath;
if ( force || anchor !== lastAnchorNode || focus !== lastFocusNode ) {
lastAnchorNode = anchor;
lastFocusNode = focus;
newPath = ( anchor && focus ) ? ( anchor === focus ) ?
getPath( focus ) : '(selection)' : '';
if ( path !== newPath ) {
path = newPath;
fireEvent( 'pathChange', { path: newPath } );
}
}
if ( anchor !== focus ) {
fireEvent( 'select' );
}
};
var updatePathOnEvent = function () {
updatePath( getSelection() );
};
addEventListener( 'keyup', updatePathOnEvent );
addEventListener( 'mouseup', updatePathOnEvent );
// --- Focus ---
var focus = function () {
// FF seems to need the body to be focussed
// (at least on first load).
if ( isGecko ) {
body.focus();
}
win.focus();
};
var blur = function () {
// IE will remove the whole browser window from focus if you call
// win.blur() or body.blur(), so instead we call top.focus() to focus
// the top frame, thus blurring this frame. This works in everything
// except FF, so we need to call body.blur() in that as well.
if ( isGecko ) {
body.blur();
}
top.focus();
};
win.addEventListener( 'focus', propagateEvent, false );
win.addEventListener( 'blur', propagateEvent, false );
// --- Get/Set data ---
var getHTML = function () {
return body.innerHTML;
};
var setHTML = function ( html ) {
var node = body;
node.innerHTML = html;
do {
fixCursor( node );
} while ( node = getNextBlock( node ) );
};
var insertElement = function ( el, range ) {
if ( !range ) { range = getSelection(); }
range.collapse( true );
if ( isInline( el ) ) {
range._insertNode( el );
range.setStartAfter( el );
} else {
// Get containing block node.
var splitNode = range.getStartBlock() || body,
parent, nodeAfterSplit;
// While at end of container node, move up DOM tree.
while ( splitNode !== body && !splitNode.nextSibling ) {
splitNode = splitNode.parentNode;
}
// If in the middle of a container node, split up to body.
if ( splitNode !== body ) {
parent = splitNode.parentNode;
nodeAfterSplit = split( parent, splitNode.nextSibling, body );
}
if ( nodeAfterSplit ) {
body.insertBefore( el, nodeAfterSplit );
range.setStart( nodeAfterSplit, 0 );
range.setStart( nodeAfterSplit, 0 );
range.moveBoundariesDownTree();
} else {
body.appendChild( el );
// Insert blank line below block.
body.appendChild( fixCursor( createElement( 'div' ) ) );
range.setStart( el, 0 );
range.setEnd( el, 0 );
}
focus();
setSelection( range );
updatePath( range );
}
};
// --- Bookmarking ---
var startSelectionId = 'squire-selection-start';
var endSelectionId = 'squire-selection-end';
var saveRangeToBookmark = function ( range ) {
var startNode = createElement( 'INPUT', {
id: startSelectionId,
type: 'hidden'
}),
endNode = createElement( 'INPUT', {
id: endSelectionId,
type: 'hidden'
}),
temp;
range._insertNode( startNode );
range.collapse( false );
range._insertNode( endNode );
// In a collapsed range, the start is sometimes inserted after the end!
if ( startNode.compareDocumentPosition( endNode ) &
DOCUMENT_POSITION_PRECEDING ) {
startNode.id = endSelectionId;
endNode.id = startSelectionId;
temp = startNode;
startNode = endNode;
endNode = temp;
}
range.setStartAfter( startNode );
range.setEndBefore( endNode );
};
var getRangeAndRemoveBookmark = function ( range ) {
var start = doc.getElementById( startSelectionId ),
end = doc.getElementById( endSelectionId );
if ( start && end ) {
var startContainer = start.parentNode,
endContainer = end.parentNode,
collapsed;
var _range = {
startContainer: startContainer,
endContainer: endContainer,
startOffset: indexOf.call( startContainer.childNodes, start ),
endOffset: indexOf.call( endContainer.childNodes, end )
};
if ( startContainer === endContainer ) {
_range.endOffset -= 1;
}
detach( start );
detach( end );
// Merge any text nodes we split
mergeInlines( startContainer, _range );
if ( startContainer !== endContainer ) {
mergeInlines( endContainer, _range );
}
if ( !range ) {
range = doc.createRange();
}
range.setStart( _range.startContainer, _range.startOffset );
range.setEnd( _range.endContainer, _range.endOffset );
collapsed = range.collapsed;
range.moveBoundariesDownTree();
if ( collapsed ) {
range.collapse( true );
}
}
return range || null;
};
// --- Undo ---
// These values are initialised in the editor.setHTML method,
// which is always called on initialisation.
var undoIndex; // = -1,
var undoStack; // = [],
var undoStackLength; // = 0,
var isInUndoState; // = false,
var docWasChanged = function () {
if ( isInUndoState ) {
isInUndoState = false;
fireEvent( 'undoStateChange', {
canUndo: true,
canRedo: false
});
}
fireEvent( 'input' );
};
addEventListener( 'keyup', function ( event ) {
var code = event.keyCode;
// Presume document was changed if:
// 1. A modifier key (other than shift) wasn't held down
// 2. The key pressed is not in range 16<=x<=20 (control keys)
// 3. The key pressed is not in range 33<=x<=45 (navigation keys)
if ( !event.ctrlKey && !event.metaKey && !event.altKey &&
( code < 16 || code > 20 ) &&
( code < 33 || code > 45 ) ) {
docWasChanged();
}
});
// Leaves bookmark
var recordUndoState = function ( range ) {
// Don't record if we're already in an undo state
if ( !isInUndoState ) {
// Advance pointer to new position
undoIndex += 1;
// Truncate stack if longer (i.e. if has been previously undone)
if ( undoIndex < undoStackLength) {
undoStack.length = undoStackLength = undoIndex;
}
// Write out data
if ( range ) {
saveRangeToBookmark( range );
}
undoStack[ undoIndex ] = getHTML();
undoStackLength += 1;
isInUndoState = true;
}
};
var undo = function () {
// Sanity check: must not be at beginning of the history stack
if ( undoIndex !== 0 || !isInUndoState ) {
// Make sure any changes since last checkpoint are saved.
recordUndoState( getSelection() );
undoIndex -= 1;
setHTML( undoStack[ undoIndex ] );
var range = getRangeAndRemoveBookmark();
if ( range ) {
setSelection( range );
}
isInUndoState = true;
fireEvent( 'undoStateChange', {
canUndo: undoIndex !== 0,
canRedo: true
});
fireEvent( 'input' );
}
};
var redo = function () {
// Sanity check: must not be at end of stack and must be in an undo
// state.
if ( undoIndex + 1 < undoStackLength && isInUndoState ) {
undoIndex += 1;
setHTML( undoStack[ undoIndex ] );
var range = getRangeAndRemoveBookmark();
if ( range ) {
setSelection( range );
}
fireEvent( 'undoStateChange', {
canUndo: true,
canRedo: undoIndex + 1 < undoStackLength
});
fireEvent( 'input' );
}
};
// --- Inline formatting ---
// Looks for matching tag and attributes, so won't work
// if instead of etc.
var hasFormat = function ( tag, attributes, range ) {
// 1. Normalise the arguments and get selection
tag = tag.toUpperCase();
if ( !attributes ) { attributes = {}; }
if ( !range && !( range = getSelection() ) ) {
return false;
}
// If the common ancestor is inside the tag we require, we definitely
// have the format.
var root = range.commonAncestorContainer,
walker, node;
if ( getNearest( root, tag, attributes ) ) {
return true;
}
// If common ancestor is a text node and doesn't have the format, we
// definitely don't have it.
if ( root.nodeType === TEXT_NODE ) {
return false;
}
// Otherwise, check each text node at least partially contained within
// the selection and make sure all of them have the format we want.
walker = new TreeWalker( root, SHOW_TEXT, function ( node ) {
return range.containsNode( node, true ) ?
FILTER_ACCEPT : FILTER_SKIP;
}, false );
var seenNode = false;
while ( node = walker.nextNode() ) {
if ( !getNearest( node, tag, attributes ) ) {
return false;
}
seenNode = true;
}
return seenNode;
};
var addFormat = function ( tag, attributes, range ) {
// If the range is collapsed we simply insert the node by wrapping
// it round the range and focus it.
var el, walker, startContainer, endContainer, startOffset, endOffset,
textnode, needsFormat;
if ( range.collapsed ) {
el = fixCursor( createElement( tag, attributes ) );
range._insertNode( el );
range.setStart( el.firstChild, el.firstChild.length );
range.collapse( true );
}
// Otherwise we find all the textnodes in the range (splitting
// partially selected nodes) and if they're not already formatted
// correctly we wrap them in the appropriate tag.
else {
// We don't want to apply formatting twice so we check each text
// node to see if it has an ancestor with the formatting already.
// Create an iterator to walk over all the text nodes under this
// ancestor which are in the range and not already formatted
// correctly.
walker = new TreeWalker(
range.commonAncestorContainer,
SHOW_TEXT,
function ( node ) {
return range.containsNode( node, true ) ?
FILTER_ACCEPT : FILTER_SKIP;
},
false
);
// Start at the beginning node of the range and iterate through
// all the nodes in the range that need formatting.
startOffset = 0;
endOffset = 0;
textnode = walker.currentNode = range.startContainer;
if ( textnode.nodeType !== TEXT_NODE ) {
textnode = walker.nextNode();
}
do {
needsFormat = !getNearest( textnode, tag, attributes );
if ( textnode === range.endContainer ) {
if ( needsFormat && textnode.length > range.endOffset ) {
textnode.splitText( range.endOffset );
} else {
endOffset = range.endOffset;
}
}
if ( textnode === range.startContainer ) {
if ( needsFormat && range.startOffset ) {
textnode = textnode.splitText( range.startOffset );
} else {
startOffset = range.startOffset;
}
}
if ( needsFormat ) {
el = createElement( tag, attributes );
replaceWith( textnode, el );
el.appendChild( textnode );
endOffset = textnode.length;
}
endContainer = textnode;
if ( !startContainer ) { startContainer = endContainer; }
} while ( textnode = walker.nextNode() );
// Now set the selection to as it was before
range = createRange(
startContainer, startOffset, endContainer, endOffset );
}
return range;
};
var removeFormat = function ( tag, attributes, range, partial ) {
// Add bookmark
saveRangeToBookmark( range );
// We need a node in the selection to break the surrounding
// formatted text.
var fixer;
if ( range.collapsed ) {
if ( cantFocusEmptyTextNodes ) {
fixer = doc.createTextNode( '\u200B' );
setPlaceholderTextNode( fixer );
} else {
fixer = doc.createTextNode( '' );
}
range._insertNode( fixer );
}
// Find block-level ancestor of selection
var root = range.commonAncestorContainer;
while ( isInline( root ) ) {
root = root.parentNode;
}
// Find text nodes inside formatTags that are not in selection and
// add an extra tag with the same formatting.
var startContainer = range.startContainer,
startOffset = range.startOffset,
endContainer = range.endContainer,
endOffset = range.endOffset,
toWrap = [],
examineNode = function ( node, exemplar ) {
// If the node is completely contained by the range then
// we're going to remove all formatting so ignore it.
if ( range.containsNode( node, false ) ) {
return;
}
var isText = ( node.nodeType === TEXT_NODE ),
child, next;
// If not at least partially contained, wrap entire contents
// in a clone of the tag we're removing and we're done.
if ( !range.containsNode( node, true ) ) {
// Ignore bookmarks and empty text nodes
if ( node.nodeName !== 'INPUT' &&
( !isText || node.data ) ) {
toWrap.push([ exemplar, node ]);
}
return;
}
// Split any partially selected text nodes.
if ( isText ) {
if ( node === endContainer && endOffset !== node.length ) {
toWrap.push([ exemplar, node.splitText( endOffset ) ]);
}
if ( node === startContainer && startOffset ) {
node.splitText( startOffset );
toWrap.push([ exemplar, node ]);
}
}
// If not a text node, recurse onto all children.
// Beware, the tree may be rewritten with each call
// to examineNode, hence find the next sibling first.
else {
for ( child = node.firstChild; child; child = next ) {
next = child.nextSibling;
examineNode( child, exemplar );
}
}
},
formatTags = Array.prototype.filter.call(
root.getElementsByTagName( tag ), function ( el ) {
return range.containsNode( el, true ) &&
hasTagAttributes( el, tag, attributes );
}
);
if ( !partial ) {
formatTags.forEach( function ( node ) {
examineNode( node, node );
});
}
// Now wrap unselected nodes in the tag
toWrap.forEach( function ( item ) {
// [ exemplar, node ] tuple
var el = item[0].cloneNode( false ),
node = item[1];
replaceWith( node, el );
el.appendChild( node );
});
// and remove old formatting tags.
formatTags.forEach( function ( el ) {
replaceWith( el, empty( el ) );
});
// Merge adjacent inlines:
getRangeAndRemoveBookmark( range );
if ( fixer ) {
range.collapse( false );
}
var _range = {
startContainer: range.startContainer,
startOffset: range.startOffset,
endContainer: range.endContainer,
endOffset: range.endOffset
};
mergeInlines( root, _range );
range.setStart( _range.startContainer, _range.startOffset );
range.setEnd( _range.endContainer, _range.endOffset );
return range;
};
var changeFormat = function ( add, remove, range, partial ) {
// Normalise the arguments and get selection
if ( !range && !( range = getSelection() ) ) {
return;
}
// Save undo checkpoint
recordUndoState( range );
getRangeAndRemoveBookmark( range );
if ( remove ) {
range = removeFormat( remove.tag.toUpperCase(),
remove.attributes || {}, range, partial );
}
if ( add ) {
range = addFormat( add.tag.toUpperCase(),
add.attributes || {}, range );
}
setSelection( range );
updatePath( range, true );
// We're not still in an undo state
docWasChanged();
};
// --- Block formatting ---
var tagAfterSplit = {
DIV: 'DIV',
PRE: 'DIV',
H1: 'DIV',
H2: 'DIV',
H3: 'DIV',
H4: 'DIV',
H5: 'DIV',
H6: 'DIV',
P: 'DIV',
DT: 'DD',
DD: 'DT',
LI: 'LI'
};
var splitBlock = function ( block, node, offset ) {
var splitTag = tagAfterSplit[ block.nodeName ],
nodeAfterSplit = split( node, offset, block.parentNode );
// Make sure the new node is the correct type.
if ( nodeAfterSplit.nodeName !== splitTag ) {
block = createElement( splitTag );
block.className = nodeAfterSplit.dir === 'rtl' ? 'dir-rtl' : '';
block.dir = nodeAfterSplit.dir;
replaceWith( nodeAfterSplit, block );
block.appendChild( empty( nodeAfterSplit ) );
nodeAfterSplit = block;
}
return nodeAfterSplit;
};
var forEachBlock = function ( fn, mutates, range ) {
if ( !range && !( range = getSelection() ) ) {
return;
}
// Save undo checkpoint
if ( mutates ) {
recordUndoState( range );
getRangeAndRemoveBookmark( range );
}
var start = range.getStartBlock(),
end = range.getEndBlock();
if ( start && end ) {
do {
if ( fn( start ) || start === end ) { break; }
} while ( start = getNextBlock( start ) );
}
if ( mutates ) {
setSelection( range );
// Path may have changed
updatePath( range, true );
// We're not still in an undo state
docWasChanged();
}
};
var modifyBlocks = function ( modify, range ) {
if ( !range && !( range = getSelection() ) ) {
return;
}
// 1. Stop firefox adding an extra
to
// if we remove everything. Don't want to do this in Opera
// as it can cause focus problems.
if ( !isOpera ) {
body.setAttribute( 'contenteditable', 'false' );
}
// 2. Save undo checkpoint and bookmark selection
if ( isInUndoState ) {
saveRangeToBookmark( range );
} else {
recordUndoState( range );
}
// 3. Expand range to block boundaries
range.expandToBlockBoundaries();
// 4. Remove range.
range.moveBoundariesUpTree( body );
var frag = range._extractContents( body );
// 5. Modify tree of fragment and reinsert.
range._insertNode( modify( frag ) );
// 6. Merge containers at edges
if ( range.endOffset < range.endContainer.childNodes.length ) {
mergeContainers( range.endContainer.childNodes[ range.endOffset ] );
}
mergeContainers( range.startContainer.childNodes[ range.startOffset ] );
// 7. Make it editable again
if ( !isOpera ) {
body.setAttribute( 'contenteditable', 'true' );
}
// 8. Restore selection
getRangeAndRemoveBookmark( range );
setSelection( range );
updatePath( range, true );
// 9. We're not still in an undo state
docWasChanged();
};
var increaseBlockQuoteLevel = function ( frag ) {
return createElement( 'BLOCKQUOTE', [
frag
]);
};
var decreaseBlockQuoteLevel = function ( frag ) {
var blockquotes = frag.querySelectorAll( 'blockquote' );
Array.prototype.filter.call( blockquotes, function ( el ) {
return !getNearest( el.parentNode, 'BLOCKQUOTE' );
}).forEach( function ( el ) {
replaceWith( el, empty( el ) );
});
return frag;
};
var removeBlockQuote = function ( frag ) {
var blockquotes = frag.querySelectorAll( 'blockquote' ),
l = blockquotes.length,
bq;
while ( l-- ) {
bq = blockquotes[l];
replaceWith( bq, empty( bq ) );
}
return frag;
};
var makeList = function ( nodes, type ) {
var i, l, node, tag, prev, replacement;
for ( i = 0, l = nodes.length; i < l; i += 1 ) {
node = nodes[i];
tag = node.nodeName;
if ( isBlock( node ) ) {
if ( tag !== 'LI' ) {
replacement = createElement( 'LI', {
'class': node.dir === 'rtl' ? 'dir-rtl' : '',
dir: node.dir
}, [
empty( node )
]);
if ( node.parentNode.nodeName === type ) {
replaceWith( node, replacement );
}
else if ( ( prev = node.previousSibling ) &&
prev.nodeName === type ) {
prev.appendChild( replacement );
detach( node );
i -= 1;
l -= 1;
}
else {
replaceWith(
node,
createElement( type, [
replacement
])
);
}
}
} else if ( isContainer( node ) ) {
if ( tag !== type && ( /^[DOU]L$/.test( tag ) ) ) {
replaceWith( node, createElement( type, [ empty( node ) ] ) );
} else {
makeList( node.childNodes, type );
}
}
}
};
var makeUnorderedList = function ( frag ) {
makeList( frag.childNodes, 'UL' );
return frag;
};
var makeOrderedList = function ( frag ) {
makeList( frag.childNodes, 'OL' );
return frag;
};
var decreaseListLevel = function ( frag ) {
var lists = frag.querySelectorAll( 'UL, OL' );
Array.prototype.filter.call( lists, function ( el ) {
return !getNearest( el.parentNode, 'UL' ) &&
!getNearest( el.parentNode, 'OL' );
}).forEach( function ( el ) {
var frag = empty( el ),
children = frag.childNodes,
l = children.length,
child;
while ( l-- ) {
child = children[l];
if ( child.nodeName === 'LI' ) {
frag.replaceChild( createElement( 'DIV', {
'class': child.dir === 'rtl' ? 'dir-rtl' : '',
dir: child.dir
}, [
empty( child )
]), child );
}
}
replaceWith( el, frag );
});
return frag;
};
// --- Clean ---
var linkRegExp = /\b((?:(?:ht|f)tps?:\/\/|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]+|\([^\s()<>]+\))+(?:\((?:[^\s()<>]+|(?:\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’])|(?:[\w\-.%+]+@(?:[\w\-]+\.)+[A-Z]{2,4}))/i;
var addLinks = function ( frag ) {
var doc = frag.ownerDocument,
walker = new TreeWalker( frag, SHOW_TEXT,
function ( node ) {
return getNearest( node, 'A' ) ? FILTER_SKIP : FILTER_ACCEPT;
}, false ),
node, parts, i, l, text, parent, next;
while ( node = walker.nextNode() ) {
parts = node.data.split( linkRegExp );
l = parts.length;
if ( l > 1 ) {
parent = node.parentNode;
next = node.nextSibling;
for ( i = 0; i < l; i += 1 ) {
text = parts[i];
if ( i ) {
if ( i % 2 ) {
node = doc.createElement( 'A' );
node.textContent = text;
node.href = /@/.test( text ) ? 'mailto:' + text :
/^(?:ht|f)tps?:/.test( text ) ?
text : 'http://' + text;
} else {
node = doc.createTextNode( text );
}
if ( next ) {
parent.insertBefore( node, next );
} else {
parent.appendChild( node );
}
} else {
node.data = text;
}
}
walker.currentNode = node;
}
}
};
var allowedBlock = /^(?:A(?:DDRESS|RTICLE|SIDE)|BLOCKQUOTE|CAPTION|D(?:[DLT]|IV)|F(?:IGURE|OOTER)|H[1-6]|HEADER|L(?:ABEL|EGEND|I)|O(?:L|UTPUT)|P(?:RE)?|SECTION|T(?:ABLE|BODY|D|FOOT|H|HEAD|R)|UL)$/;
var fontSizes = {
1: 10,
2: 13,
3: 16,
4: 18,
5: 24,
6: 32,
7: 48
};
var spanToSemantic = {
backgroundColor: {
regexp: notWS,
replace: function ( colour ) {
return createElement( 'SPAN', {
'class': 'highlight',
style: 'background-color: ' + colour
});
}
},
color: {
regexp: notWS,
replace: function ( colour ) {
return createElement( 'SPAN', {
'class': 'colour',
style: 'color:' + colour
});
}
},
fontWeight: {
regexp: /^bold/i,
replace: function () {
return createElement( 'B' );
}
},
fontStyle: {
regexp: /^italic/i,
replace: function () {
return createElement( 'I' );
}
},
fontFamily: {
regexp: notWS,
replace: function ( family ) {
return createElement( 'SPAN', {
'class': 'font',
style: 'font-family:' + family
});
}
},
fontSize: {
regexp: notWS,
replace: function ( size ) {
return createElement( 'SPAN', {
'class': 'size',
style: 'font-size:' + size
});
}
}
};
var stylesRewriters = {
SPAN: function ( span, parent ) {
var style = span.style,
attr, converter, css, newTreeBottom, newTreeTop, el;
for ( attr in spanToSemantic ) {
converter = spanToSemantic[ attr ];
css = style[ attr ];
if ( css && converter.regexp.test( css ) ) {
el = converter.replace( css );
if ( newTreeBottom ) {
newTreeBottom.appendChild( el );
}
newTreeBottom = el;
if ( !newTreeTop ) {
newTreeTop = el;
}
}
}
if ( newTreeTop ) {
newTreeBottom.appendChild( empty( span ) );
parent.replaceChild( newTreeTop, span );
}
return newTreeBottom || span;
},
STRONG: function ( node, parent ) {
var el = createElement( 'B' );
parent.replaceChild( el, node );
el.appendChild( empty( node ) );
return el;
},
EM: function ( node, parent ) {
var el = createElement( 'I' );
parent.replaceChild( el, node );
el.appendChild( empty( node ) );
return el;
},
FONT: function ( node, parent ) {
var face = node.face,
size = node.size,
fontSpan, sizeSpan,
newTreeBottom, newTreeTop;
if ( face ) {
fontSpan = createElement( 'SPAN', {
'class': 'font',
style: 'font-family:' + face
});
}
if ( size ) {
sizeSpan = createElement( 'SPAN', {
'class': 'size',
style: 'font-size:' + fontSizes[ size ] + 'px'
});
if ( fontSpan ) {
fontSpan.appendChild( sizeSpan );
}
}
newTreeTop = fontSpan || sizeSpan || createElement( 'SPAN' );
newTreeBottom = sizeSpan || fontSpan || newTreeTop;
parent.replaceChild( newTreeTop, node );
newTreeBottom.appendChild( empty( node ) );
return newTreeBottom;
},
TT: function ( node, parent ) {
var el = createElement( 'SPAN', {
'class': 'font',
style: 'font-family:menlo,consolas,"courier new",monospace'
});
parent.replaceChild( el, node );
el.appendChild( empty( node ) );
return el;
}
};
var removeEmptyInlines = function ( root ) {
var children = root.childNodes,
l = children.length,
child;
while ( l-- ) {
child = children[l];
if ( child.nodeType === ELEMENT_NODE ) {
removeEmptyInlines( child );
if ( isInline( child ) && !child.firstChild ) {
root.removeChild( child );
}
}
}
};
/*
Two purposes:
1. Remove nodes we don't want, such as weird tags, comment nodes
and whitespace nodes.
2. Convert inline tags into our preferred format.
*/
var cleanTree = function ( node, allowStyles ) {
var children = node.childNodes,
i, l, child, nodeName, nodeType, rewriter, childLength;
for ( i = 0, l = children.length; i < l; i += 1 ) {
child = children[i];
nodeName = child.nodeName;
nodeType = child.nodeType;
rewriter = stylesRewriters[ nodeName ];
if ( nodeType === ELEMENT_NODE ) {
childLength = child.childNodes.length;
if ( rewriter ) {
child = rewriter( child, node );
} else if ( !allowedBlock.test( nodeName ) &&
!isInline( child ) ) {
i -= 1;
l += childLength - 1;
node.replaceChild( empty( child ), child );
continue;
} else if ( !allowStyles && child.style.cssText ) {
child.removeAttribute( 'style' );
}
if ( childLength ) {
cleanTree( child, allowStyles );
}
} else if ( nodeType !== TEXT_NODE || (
!( notWS.test( child.data ) ) &&
!( i > 0 && isInline( children[ i - 1 ] ) ) &&
!( i + 1 < l && isInline( children[ i + 1 ] ) )
) ) {
node.removeChild( child );
i -= 1;
l -= 1;
}
}
return node;
};
var wrapTopLevelInline = function ( root, tag ) {
var children = root.childNodes,
wrapper = null,
i, l, child, isBR;
for ( i = 0, l = children.length; i < l; i += 1 ) {
child = children[i];
isBR = child.nodeName === 'BR';
if ( !isBR && isInline( child ) ) {
if ( !wrapper ) { wrapper = createElement( tag ); }
wrapper.appendChild( child );
i -= 1;
l -= 1;
} else if ( isBR || wrapper ) {
if ( !wrapper ) { wrapper = createElement( tag ); }
fixCursor( wrapper );
if ( isBR ) {
root.replaceChild( wrapper, child );
} else {
root.insertBefore( wrapper, child );
i += 1;
l += 1;
}
wrapper = null;
}
}
if ( wrapper ) {
root.appendChild( fixCursor( wrapper ) );
}
return root;
};
var notWSTextNode = function ( node ) {
return ( node.nodeType === ELEMENT_NODE ?
node.nodeName === 'BR' :
notWS.test( node.data ) ) ?
FILTER_ACCEPT : FILTER_SKIP;
};
var isLineBreak = function ( br ) {
var block = br.parentNode,
walker;
while ( isInline( block ) ) {
block = block.parentNode;
}
walker = new TreeWalker(
block, SHOW_ELEMENT|SHOW_TEXT, notWSTextNode );
walker.currentNode = br;
return !!walker.nextNode();
};
//
elements are treated specially, and differently depending on the
// browser, when in rich text editor mode. When adding HTML from external
// sources, we must remove them, replacing the ones that actually affect
// line breaks with a split of the block element containing it (and wrapping
// any not inside a block). Browsers that want
elements at the end of
// each block will then have them added back in a later fixCursor method
// call.
var cleanupBRs = function ( root ) {
var brs = root.querySelectorAll( 'BR' ),
brBreaksLine = [],
l = brs.length,
i, br, block;
// Must calculate whether the
breaks a line first, because if we
// have two
s next to each other, after the first one is converted
// to a block split, the second will be at the end of a block and
// therefore seem to not be a line break. But in its original context it
// was, so we should also convert it to a block split.
for ( i = 0; i < l; i += 1 ) {
brBreaksLine[i] = isLineBreak( brs[i] );
}
while ( l-- ) {
br = brs[l];
// Cleanup may have removed it
block = br.parentNode;
if ( !block ) { continue; }
while ( isInline( block ) ) {
block = block.parentNode;
}
// If this is not inside a block, replace it by wrapping
// inlines in DIV.
if ( !isBlock( block ) || !tagAfterSplit[ block.nodeName ] ) {
wrapTopLevelInline( block, 'DIV' );
}
// If in a block we can split, split it instead, but only if there
// is actual text content in the block. Otherwise, the
is a
// placeholder to stop the block from collapsing, so we must leave
// it.
else {
if ( brBreaksLine[l] ) {
splitBlock( block, br.parentNode, br );
}
detach( br );
}
}
};
// --- Cut and Paste ---
var afterCut = function () {
try {
// If all content removed, ensure div at start of body.
fixCursor( body );
} catch ( error ) {
editor.didError( error );
}
};
addEventListener( isIE ? 'beforecut' : 'cut', function () {
// Save undo checkpoint
var range = getSelection();
recordUndoState( range );
getRangeAndRemoveBookmark( range );
setSelection( range );
setTimeout( afterCut, 0 );
});
// IE sometimes fires the beforepaste event twice; make sure it is not run
// again before our after paste function is called.
var awaitingPaste = false;
addEventListener( isIE ? 'beforepaste' : 'paste', function ( event ) {
if ( awaitingPaste ) { return; }
// Treat image paste as a drop of an image file.
var clipboardData = event.clipboardData,
items = clipboardData && clipboardData.items,
fireDrop = false,
l;
if ( items ) {
l = items.length;
while ( l-- ) {
if ( /^image\/.*/.test( items[l].type ) ) {
event.preventDefault();
fireEvent( 'dragover', {
dataTransfer: clipboardData,
/*jshint loopfunc: true */
preventDefault: function () {
fireDrop = true;
}
/*jshint loopfunc: false */
});
if ( fireDrop ) {
fireEvent( 'drop', {
dataTransfer: clipboardData
});
}
return;
}
}
}
awaitingPaste = true;
var range = getSelection(),
startContainer = range.startContainer,
startOffset = range.startOffset,
endContainer = range.endContainer,
endOffset = range.endOffset;
var pasteArea = createElement( 'DIV', {
style: 'position: absolute; overflow: hidden; top:' +
(body.scrollTop + 30) + 'px; left: 0; width: 1px; height: 1px;'
});
body.appendChild( pasteArea );
range.selectNodeContents( pasteArea );
setSelection( range );
// A setTimeout of 0 means this is added to the back of the
// single javascript thread, so it will be executed after the
// paste event.
setTimeout( function () {
try {
// Get the pasted content and clean
var frag = empty( detach( pasteArea ) ),
first = frag.firstChild,
range = createRange(
startContainer, startOffset, endContainer, endOffset );
// Was anything actually pasted?
if ( first ) {
// Safari and IE like putting extra divs around things.
if ( first === frag.lastChild &&
first.nodeName === 'DIV' ) {
frag.replaceChild( empty( first ), first );
}
frag.normalize();
addLinks( frag );
cleanTree( frag, false );
cleanupBRs( frag );
removeEmptyInlines( frag );
var node = frag,
doPaste = true;
while ( node = getNextBlock( node ) ) {
fixCursor( node );
}
fireEvent( 'willPaste', {
fragment: frag,
preventDefault: function () {
doPaste = false;
}
});
// Insert pasted data
if ( doPaste ) {
range.insertTreeFragment( frag );
docWasChanged();
range.collapse( false );
}
}
setSelection( range );
updatePath( range, true );
awaitingPaste = false;
} catch ( error ) {
editor.didError( error );
}
}, 0 );
});
// --- Keyboard interaction ---
var keys = {
8: 'backspace',
9: 'tab',
13: 'enter',
32: 'space',
46: 'delete'
};
var mapKeyTo = function ( fn ) {
return function ( event ) {
event.preventDefault();
fn();
};
};
var mapKeyToFormat = function ( tag ) {
return function ( event ) {
event.preventDefault();
var range = getSelection();
if ( hasFormat( tag, null, range ) ) {
changeFormat( null, { tag: tag }, range );
} else {
changeFormat( { tag: tag }, null, range );
}
};
};
// If you delete the content inside a span with a font styling, Webkit will
// replace it with a tag (!). If you delete all the text inside a
// link in Opera, it won't delete the link. Let's make things consistent. If
// you delete all text inside an inline tag, remove the inline tag.
var afterDelete = function () {
try {
var range = getSelection(),
node = range.startContainer,
parent;
if ( node.nodeType === TEXT_NODE ) {
node = node.parentNode;
}
// If focussed in empty inline element
if ( isInline( node ) && !node.textContent ) {
do {
parent = node.parentNode;
} while ( isInline( parent ) &&
!parent.textContent && ( node = parent ) );
range.setStart( parent,
indexOf.call( parent.childNodes, node ) );
range.collapse( true );
parent.removeChild( node );
if ( !isBlock( parent ) ) {
parent = getPreviousBlock( parent );
}
fixCursor( parent );
range.moveBoundariesDownTree();
setSelection( range );
updatePath( range );
}
} catch ( error ) {
editor.didError( error );
}
};
// If you select all in IE8 then type, it makes a P; replace it with
// a DIV.
if ( isIE8 ) {
addEventListener( 'keyup', function () {
var firstChild = body.firstChild;
if ( firstChild.nodeName === 'P' ) {
saveRangeToBookmark( getSelection() );
replaceWith( firstChild, createElement( 'DIV', [
empty( firstChild )
]) );
setSelection( getRangeAndRemoveBookmark() );
}
});
}
var keyHandlers = {
enter: function ( event ) {
// We handle this ourselves
event.preventDefault();
// Must have some form of selection
var range = getSelection();
if ( !range ) { return; }
// Save undo checkpoint and add any links in the preceding section.
recordUndoState( range );
addLinks( range.startContainer );
getRangeAndRemoveBookmark( range );
// Selected text is overwritten, therefore delete the contents
// to collapse selection.
if ( !range.collapsed ) {
range._deleteContents();
}
var block = range.getStartBlock(),
tag = block ? block.nodeName : 'DIV',
splitTag = tagAfterSplit[ tag ],
nodeAfterSplit;
// If this is a malformed bit of document, just play it safe
// and insert a
.
if ( !block ) {
range._insertNode( createElement( 'BR' ) );
range.collapse( false );
setSelection( range );
updatePath( range, true );
docWasChanged();
return;
}
// We need to wrap the contents in divs.
var splitNode = range.startContainer,
splitOffset = range.startOffset,
replacement;
if ( !splitTag ) {
// If the selection point is inside the block, we're going to
// rewrite it so our saved referece points won't be valid.
// Pick a node at a deeper point in the tree to avoid this.
if ( splitNode === block ) {
splitNode = splitOffset ?
splitNode.childNodes[ splitOffset - 1 ] : null;
splitOffset = 0;
if ( splitNode ) {
if ( splitNode.nodeName === 'BR' ) {
splitNode = splitNode.nextSibling;
} else {
splitOffset = getLength( splitNode );
}
if ( !splitNode || splitNode.nodeName === 'BR' ) {
replacement = fixCursor( createElement( 'DIV' ) );
if ( splitNode ) {
block.replaceChild( replacement, splitNode );
} else {
block.appendChild( replacement );
}
splitNode = replacement;
}
}
}
wrapTopLevelInline( block, 'DIV' );
splitTag = 'DIV';
if ( !splitNode ) {
splitNode = block.firstChild;
}
range.setStart( splitNode, splitOffset );
range.setEnd( splitNode, splitOffset );
block = range.getStartBlock();
}
if ( !block.textContent ) {
// Break list
if ( getNearest( block, 'UL' ) || getNearest( block, 'OL' ) ) {
return modifyBlocks( decreaseListLevel, range );
}
// Break blockquote
else if ( getNearest( block, 'BLOCKQUOTE' ) ) {
return modifyBlocks( removeBlockQuote, range );
}
}
// Otherwise, split at cursor point.
nodeAfterSplit = splitBlock( block, splitNode, splitOffset );
// Focus cursor
// If there's a / etc. at the beginning of the split
// make sure we focus inside it.
while ( nodeAfterSplit.nodeType === ELEMENT_NODE ) {
var child = nodeAfterSplit.firstChild,
next;
// Don't continue links over a block break; unlikely to be the
// desired outcome.
if ( nodeAfterSplit.nodeName === 'A' ) {
replaceWith( nodeAfterSplit, empty( nodeAfterSplit ) );
nodeAfterSplit = child;
continue;
}
while ( child && child.nodeType === TEXT_NODE && !child.data ) {
next = child.nextSibling;
if ( !next || next.nodeName === 'BR' ) {
break;
}
detach( child );
child = next;
}
// 'BR's essentially don't count; they're a browser hack.
// If you try to select the contents of a 'BR', FF will not let
// you type anything!
if ( !child || child.nodeName === 'BR' ||
( child.nodeType === TEXT_NODE && !isOpera ) ) {
break;
}
nodeAfterSplit = child;
}
range = createRange( nodeAfterSplit, 0 );
setSelection( range );
updatePath( range, true );
// Scroll into view
if ( nodeAfterSplit.nodeType === TEXT_NODE ) {
nodeAfterSplit = nodeAfterSplit.parentNode;
}
if ( nodeAfterSplit.offsetTop + nodeAfterSplit.offsetHeight >
( doc.documentElement.scrollTop || body.scrollTop ) +
body.offsetHeight ) {
nodeAfterSplit.scrollIntoView( false );
}
// We're not still in an undo state
docWasChanged();
},
backspace: function ( event ) {
var range = getSelection();
// If not collapsed, delete contents
if ( !range.collapsed ) {
recordUndoState( range );
getRangeAndRemoveBookmark( range );
event.preventDefault();
range._deleteContents();
setSelection( range );
updatePath( range, true );
}
// If at beginning of block, merge with previous
else if ( range.startsAtBlockBoundary() ) {
recordUndoState( range );
getRangeAndRemoveBookmark( range );
event.preventDefault();
var current = range.getStartBlock(),
previous = current && getPreviousBlock( current );
// Must not be at the very beginning of the text area.
if ( previous ) {
// If not editable, just delete whole block.
if ( !previous.isContentEditable ) {
detach( previous );
return;
}
// Otherwise merge.
mergeWithBlock( previous, current, range );
// If deleted line between containers, merge newly adjacent
// containers.
current = previous.parentNode;
while ( current && !current.nextSibling ) {
current = current.parentNode;
}
if ( current && ( current = current.nextSibling ) ) {
mergeContainers( current );
}
setSelection( range );
}
// If at very beginning of text area, allow backspace
// to break lists/blockquote.
else if ( current ) {
// Break list
if ( getNearest( current, 'UL' ) ||
getNearest( current, 'OL' ) ) {
return modifyBlocks( decreaseListLevel, range );
}
// Break blockquote
else if ( getNearest( current, 'BLOCKQUOTE' ) ) {
return modifyBlocks( decreaseBlockQuoteLevel, range );
}
setSelection( range );
updatePath( range, true );
}
}
// Otherwise, leave to browser but check afterwards whether it has
// left behind an empty inline tag.
else {
var text = range.startContainer.data || '';
if ( !notWS.test( text.charAt( range.startOffset - 1 ) ) ) {
recordUndoState( range );
getRangeAndRemoveBookmark( range );
setSelection( range );
}
setTimeout( afterDelete, 0 );
}
},
'delete': function ( event ) {
var range = getSelection();
// If not collapsed, delete contents
if ( !range.collapsed ) {
recordUndoState( range );
getRangeAndRemoveBookmark( range );
event.preventDefault();
range._deleteContents();
setSelection( range );
updatePath( range, true );
}
// If at end of block, merge next into this block
else if ( range.endsAtBlockBoundary() ) {
recordUndoState( range );
getRangeAndRemoveBookmark( range );
event.preventDefault();
var current = range.getStartBlock(),
next = current && getNextBlock( current );
// Must not be at the very end of the text area.
if ( next ) {
// If not editable, just delete whole block.
if ( !next.isContentEditable ) {
detach( next );
return;
}
// Otherwise merge.
mergeWithBlock( current, next, range );
// If deleted line between containers, merge newly adjacent
// containers.
next = current.parentNode;
while ( next && !next.nextSibling ) {
next = next.parentNode;
}
if ( next && ( next = next.nextSibling ) ) {
mergeContainers( next );
}
setSelection( range );
updatePath( range, true );
}
}
// Otherwise, leave to browser but check afterwards whether it has
// left behind an empty inline tag.
else {
// Record undo point if deleting whitespace
var text = range.startContainer.data || '';
if ( !notWS.test( text.charAt( range.startOffset ) ) ) {
recordUndoState( range );
getRangeAndRemoveBookmark( range );
setSelection( range );
}
setTimeout( afterDelete, 0 );
}
},
space: function () {
var range = getSelection();
recordUndoState( range );
addLinks( range.startContainer );
getRangeAndRemoveBookmark( range );
setSelection( range );
},
'ctrl-b': mapKeyToFormat( 'B' ),
'ctrl-i': mapKeyToFormat( 'I' ),
'ctrl-u': mapKeyToFormat( 'U' ),
'ctrl-y': mapKeyTo( redo ),
'ctrl-z': mapKeyTo( undo ),
'ctrl-shift-z': mapKeyTo( redo )
};
// Ref: http://unixpapa.com/js/key.html
// Opera does not fire keydown repeatedly.
addEventListener( isOpera ? 'keypress' : 'keydown',
function ( event ) {
var code = event.keyCode,
key = keys[ code ] || String.fromCharCode( code ).toLowerCase(),
modifiers = '';
// On keypress, delete and '.' both have event.keyCode 46
// Must check event.which to differentiate.
if ( isOpera && event.which === 46 ) {
key = '.';
}
// Function keys
if ( 111 < code && code < 124 ) {
key = 'f' + ( code - 111 );
}
if ( event.altKey ) { modifiers += 'alt-'; }
if ( event.ctrlKey || event.metaKey ) { modifiers += 'ctrl-'; }
if ( event.shiftKey ) { modifiers += 'shift-'; }
key = modifiers + key;
if ( keyHandlers[ key ] ) {
keyHandlers[ key ]( event );
}
});
// --- Export ---
var chain = function ( fn ) {
return function () {
fn.apply( null, arguments );
return this;
};
};
var command = function ( fn, arg, arg2 ) {
return function () {
fn( arg, arg2 );
focus();
return this;
};
};
editor = win.editor = {
didError: function ( error ) {
console.log( error );
},
addEventListener: chain( addEventListener ),
removeEventListener: chain( removeEventListener ),
focus: chain( focus ),
blur: chain( blur ),
getDocument: function () {
return doc;
},
addStyles: function ( styles ) {
if ( styles ) {
var head = doc.documentElement.firstChild,
style = createElement( 'STYLE', {
type: 'text/css'
});
if ( style.styleSheet ) {
// IE8: must append to document BEFORE adding styles
// or you get the IE7 CSS parser!
head.appendChild( style );
style.styleSheet.cssText = styles;
} else {
// Everyone else
style.appendChild( doc.createTextNode( styles ) );
head.appendChild( style );
}
}
return this;
},
getHTML: function ( withBookMark ) {
var brs = [],
node, fixer, html, l, range;
if ( withBookMark && ( range = getSelection() ) ) {
saveRangeToBookmark( range );
}
if ( useTextFixer ) {
node = body;
while ( node = getNextBlock( node ) ) {
if ( !node.textContent && !node.querySelector( 'BR' ) ) {
fixer = createElement( 'BR' );
node.appendChild( fixer );
brs.push( fixer );
}
}
}
html = getHTML();
if ( useTextFixer ) {
l = brs.length;
while ( l-- ) {
detach( brs[l] );
}
}
if ( range ) {
getRangeAndRemoveBookmark( range );
}
return html;
},
setHTML: function ( html ) {
var frag = doc.createDocumentFragment(),
div = createElement( 'DIV' ),
child;
// Parse HTML into DOM tree
div.innerHTML = html;
frag.appendChild( empty( div ) );
cleanTree( frag, true );
cleanupBRs( frag );
wrapTopLevelInline( frag, 'DIV' );
// Fix cursor
var node = frag;
while ( node = getNextBlock( node ) ) {
fixCursor( node );
}
// Remove existing body children
while ( child = body.lastChild ) {
body.removeChild( child );
}
// And insert new content
body.appendChild( frag );
fixCursor( body );
// Reset the undo stack
undoIndex = -1;
undoStack = [];
undoStackLength = 0;
isInUndoState = false;
// Record undo state
var range = getRangeAndRemoveBookmark() ||
createRange( body.firstChild, 0 );
recordUndoState( range );
getRangeAndRemoveBookmark( range );
// IE will also set focus when selecting text so don't use
// setSelection. Instead, just store it in lastSelection, so if
// anything calls getSelection before first focus, we have a range
// to return.
if ( losesSelectionOnBlur ) {
lastSelection = range;
} else {
setSelection( range );
}
updatePath( range, true );
return this;
},
getSelectedText: function () {
return getSelection().getTextContent();
},
insertElement: chain( insertElement ),
insertImage: function ( src ) {
var img = createElement( 'IMG', {
src: src
});
insertElement( img );
return img;
},
getPath: function () {
return path;
},
getSelection: getSelection,
setSelection: chain( setSelection ),
undo: chain( undo ),
redo: chain( redo ),
hasFormat: hasFormat,
changeFormat: chain( changeFormat ),
bold: command( changeFormat, { tag: 'B' } ),
italic: command( changeFormat, { tag: 'I' } ),
underline: command( changeFormat, { tag: 'U' } ),
removeBold: command( changeFormat, null, { tag: 'B' } ),
removeItalic: command( changeFormat, null, { tag: 'I' } ),
removeUnderline: command( changeFormat, null, { tag: 'U' } ),
makeLink: function ( url ) {
url = encodeURI( url );
var range = getSelection();
if ( range.collapsed ) {
var protocolEnd = url.indexOf( ':' ) + 1;
if ( protocolEnd ) {
while ( url[ protocolEnd ] === '/' ) { protocolEnd += 1; }
}
range._insertNode(
doc.createTextNode( url.slice( protocolEnd ) )
);
}
changeFormat({
tag: 'A',
attributes: {
href: url
}
}, {
tag: 'A'
}, range );
focus();
return this;
},
removeLink: function () {
changeFormat( null, {
tag: 'A'
}, getSelection(), true );
focus();
return this;
},
setFontFace: function ( name ) {
changeFormat({
tag: 'SPAN',
attributes: {
'class': 'font',
style: 'font-family: ' + name + ', sans-serif;'
}
}, {
tag: 'SPAN',
attributes: { 'class': 'font' }
});
focus();
return this;
},
setFontSize: function ( size ) {
changeFormat({
tag: 'SPAN',
attributes: {
'class': 'size',
style: 'font-size: ' +
( typeof size === 'number' ? size + 'px' : size )
}
}, {
tag: 'SPAN',
attributes: { 'class': 'size' }
});
focus();
return this;
},
setTextColour: function ( colour ) {
changeFormat({
tag: 'SPAN',
attributes: {
'class': 'colour',
style: 'color: ' + colour
}
}, {
tag: 'SPAN',
attributes: { 'class': 'colour' }
});
focus();
return this;
},
setHighlightColour: function ( colour ) {
changeFormat({
tag: 'SPAN',
attributes: {
'class': 'highlight',
style: 'background-color: ' + colour
}
}, {
tag: 'SPAN',
attributes: { 'class': 'highlight' }
});
focus();
return this;
},
setTextAlignment: function ( alignment ) {
forEachBlock( function ( block ) {
block.className = ( block.className
.split( /\s+/ )
.filter( function ( klass ) {
return !( /align/.test( klass ) );
})
.join( ' ' ) +
' align-' + alignment ).trim();
block.style.textAlign = alignment;
}, true );
focus();
return this;
},
setTextDirection: function ( direction ) {
forEachBlock( function ( block ) {
block.className = ( block.className
.split( /\s+/ )
.filter( function ( klass ) {
return !( /dir/.test( klass ) );
})
.join( ' ' ) +
' dir-' + direction ).trim();
block.dir = direction;
}, true );
focus();
return this;
},
forEachBlock: chain( forEachBlock ),
modifyBlocks: chain( modifyBlocks ),
increaseQuoteLevel: command( modifyBlocks, increaseBlockQuoteLevel ),
decreaseQuoteLevel: command( modifyBlocks, decreaseBlockQuoteLevel ),
makeUnorderedList: command( modifyBlocks, makeUnorderedList ),
makeOrderedList: command( modifyBlocks, makeOrderedList ),
removeList: command( modifyBlocks, decreaseListLevel )
};
// --- Initialise ---
body.setAttribute( 'contenteditable', 'true' );
editor.setHTML( '' );
if ( win.onEditorLoad ) {
win.onEditorLoad( win.editor );
win.onEditorLoad = null;
}
}( document ) );