mirror of
https://github.com/fastmail/Squire.git
synced 2024-12-22 15:23:29 -05:00
2087 lines
64 KiB
JavaScript
2087 lines
64 KiB
JavaScript
/*jshint strict:false, undef:false, unused:false */
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var instances = [];
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function getSquireInstance ( doc ) {
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var l = instances.length,
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instance;
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while ( l-- ) {
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instance = instances[l];
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if ( instance._doc === doc ) {
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return instance;
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}
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}
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return null;
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}
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function mergeObjects ( base, extras, mayOverride ) {
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var prop, value;
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if ( !base ) {
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base = {};
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}
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if ( extras ) {
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for ( prop in extras ) {
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if ( mayOverride || !( prop in base ) ) {
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value = extras[ prop ];
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base[ prop ] = ( value && value.constructor === Object ) ?
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mergeObjects( base[ prop ], value, mayOverride ) :
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value;
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}
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}
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}
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return base;
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}
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function Squire ( root, config ) {
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if ( root.nodeType === DOCUMENT_NODE ) {
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root = root.body;
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}
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var doc = root.ownerDocument;
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var win = doc.defaultView;
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var mutation;
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this._win = win;
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this._doc = doc;
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this._root = root;
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this._events = {};
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this._isFocused = false;
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this._lastSelection = null;
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// IE loses selection state of iframe on blur, so make sure we
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// cache it just before it loses focus.
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if ( losesSelectionOnBlur ) {
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this.addEventListener( 'beforedeactivate', this.getSelection );
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}
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this._hasZWS = false;
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this._lastAnchorNode = null;
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this._lastFocusNode = null;
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this._path = '';
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this._willUpdatePath = false;
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if ( 'onselectionchange' in doc ) {
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this.addEventListener( 'selectionchange', this._updatePathOnEvent );
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} else {
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this.addEventListener( 'keyup', this._updatePathOnEvent );
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this.addEventListener( 'mouseup', this._updatePathOnEvent );
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}
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this._undoIndex = -1;
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this._undoStack = [];
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this._undoStackLength = 0;
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this._isInUndoState = false;
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this._ignoreChange = false;
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this._ignoreAllChanges = false;
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if ( canObserveMutations ) {
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mutation = new MutationObserver( this._docWasChanged.bind( this ) );
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mutation.observe( root, {
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childList: true,
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attributes: true,
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characterData: true,
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subtree: true
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});
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this._mutation = mutation;
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} else {
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this.addEventListener( 'keyup', this._keyUpDetectChange );
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}
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// On blur, restore focus except if the user taps or clicks to focus a
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// specific point. Can't actually use click event because focus happens
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// before click, so use mousedown/touchstart
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this._restoreSelection = false;
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this.addEventListener( 'blur', enableRestoreSelection );
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this.addEventListener( 'mousedown', disableRestoreSelection );
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this.addEventListener( 'touchstart', disableRestoreSelection );
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this.addEventListener( 'focus', restoreSelection );
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// IE sometimes fires the beforepaste event twice; make sure it is not run
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// again before our after paste function is called.
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this._awaitingPaste = false;
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this.addEventListener( isIElt11 ? 'beforecut' : 'cut', onCut );
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this.addEventListener( 'copy', onCopy );
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this.addEventListener( 'keydown', monitorShiftKey );
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this.addEventListener( 'keyup', monitorShiftKey );
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this.addEventListener( isIElt11 ? 'beforepaste' : 'paste', onPaste );
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this.addEventListener( 'drop', onDrop );
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// Opera does not fire keydown repeatedly.
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this.addEventListener( isPresto ? 'keypress' : 'keydown', onKey );
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// Add key handlers
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this._keyHandlers = Object.create( keyHandlers );
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// Override default properties
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this.setConfig( config );
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// Fix IE<10's buggy implementation of Text#splitText.
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// If the split is at the end of the node, it doesn't insert the newly split
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// node into the document, and sets its value to undefined rather than ''.
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// And even if the split is not at the end, the original node is removed
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// from the document and replaced by another, rather than just having its
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// data shortened.
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// We used to feature test for this, but then found the feature test would
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// sometimes pass, but later on the buggy behaviour would still appear.
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// I think IE10 does not have the same bug, but it doesn't hurt to replace
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// its native fn too and then we don't need yet another UA category.
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if ( isIElt11 ) {
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win.Text.prototype.splitText = function ( offset ) {
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var afterSplit = this.ownerDocument.createTextNode(
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this.data.slice( offset ) ),
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next = this.nextSibling,
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parent = this.parentNode,
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toDelete = this.length - offset;
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if ( next ) {
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parent.insertBefore( afterSplit, next );
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} else {
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parent.appendChild( afterSplit );
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}
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if ( toDelete ) {
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this.deleteData( offset, toDelete );
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}
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return afterSplit;
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};
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}
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root.setAttribute( 'contenteditable', 'true' );
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// Remove Firefox's built-in controls
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try {
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doc.execCommand( 'enableObjectResizing', false, 'false' );
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doc.execCommand( 'enableInlineTableEditing', false, 'false' );
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} catch ( error ) {}
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instances.push( this );
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// Need to register instance before calling setHTML, so that the fixCursor
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// function can lookup any default block tag options set.
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this.setHTML( '' );
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}
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var proto = Squire.prototype;
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proto.setConfig = function ( config ) {
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config = mergeObjects({
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blockTag: 'DIV',
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blockAttributes: null,
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tagAttributes: {
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blockquote: null,
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ul: null,
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ol: null,
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li: null,
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a: null
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},
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leafNodeNames: leafNodeNames,
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undo: {
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documentSizeThreshold: -1, // -1 means no threshold
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undoLimit: -1 // -1 means no limit
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}
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}, config, true );
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// Users may specify block tag in lower case
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config.blockTag = config.blockTag.toUpperCase();
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this._config = config;
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return this;
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};
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proto.createElement = function ( tag, props, children ) {
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return createElement( this._doc, tag, props, children );
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};
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proto.createDefaultBlock = function ( children ) {
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var config = this._config;
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return fixCursor(
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this.createElement( config.blockTag, config.blockAttributes, children ),
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this._root
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);
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};
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proto.didError = function ( error ) {
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console.log( error );
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};
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proto.getDocument = function () {
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return this._doc;
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};
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proto.getRoot = function () {
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return this._root;
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};
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proto.modifyDocument = function ( modificationCallback ) {
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this._ignoreAllChanges = true;
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if ( this._mutation ) {
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this._mutation.disconnect();
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}
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modificationCallback();
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this._ignoreAllChanges = false;
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if ( this._mutation ) {
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this._mutation.observe( this._root, {
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childList: true,
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attributes: true,
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characterData: true,
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subtree: true
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});
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this._ignoreChange = false;
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}
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};
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// --- Events ---
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// Subscribing to these events won't automatically add a listener to the
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// document node, since these events are fired in a custom manner by the
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// editor code.
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var customEvents = {
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pathChange: 1, select: 1, input: 1, undoStateChange: 1
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};
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proto.fireEvent = function ( type, event ) {
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var handlers = this._events[ type ];
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var isFocused, l, obj;
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// UI code, especially modal views, may be monitoring for focus events and
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// immediately removing focus. In certain conditions, this can cause the
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// focus event to fire after the blur event, which can cause an infinite
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// loop. So we detect whether we're actually focused/blurred before firing.
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if ( /^(?:focus|blur)/.test( type ) ) {
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isFocused = isOrContains( this._root, this._doc.activeElement );
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if ( type === 'focus' ) {
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if ( !isFocused || this._isFocused ) {
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return this;
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}
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this._isFocused = true;
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} else {
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if ( isFocused || !this._isFocused ) {
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return this;
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}
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this._isFocused = false;
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}
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}
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if ( handlers ) {
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if ( !event ) {
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event = {};
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}
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if ( event.type !== type ) {
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event.type = type;
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}
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// Clone handlers array, so any handlers added/removed do not affect it.
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handlers = handlers.slice();
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l = handlers.length;
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while ( l-- ) {
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obj = handlers[l];
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try {
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if ( obj.handleEvent ) {
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obj.handleEvent( event );
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} else {
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obj.call( this, event );
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}
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} catch ( error ) {
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error.details = 'Squire: fireEvent error. Event type: ' + type;
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this.didError( error );
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}
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}
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}
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return this;
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};
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proto.destroy = function () {
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var l = instances.length;
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var events = this._events;
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var type;
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for ( type in events ) {
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this.removeEventListener( type );
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}
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if ( this._mutation ) {
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this._mutation.disconnect();
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}
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while ( l-- ) {
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if ( instances[l] === this ) {
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instances.splice( l, 1 );
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}
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}
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// Destroy undo stack
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this._undoIndex = -1;
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this._undoStack = [];
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this._undoStackLength = 0;
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};
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proto.handleEvent = function ( event ) {
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this.fireEvent( event.type, event );
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};
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proto.addEventListener = function ( type, fn ) {
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var handlers = this._events[ type ];
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var target = this._root;
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if ( !fn ) {
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this.didError({
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name: 'Squire: addEventListener with null or undefined fn',
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message: 'Event type: ' + type
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});
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return this;
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}
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if ( !handlers ) {
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handlers = this._events[ type ] = [];
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if ( !customEvents[ type ] ) {
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if ( type === 'selectionchange' ) {
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target = this._doc;
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}
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target.addEventListener( type, this, true );
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}
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}
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handlers.push( fn );
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return this;
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};
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proto.removeEventListener = function ( type, fn ) {
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var handlers = this._events[ type ];
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var target = this._root;
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var l;
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if ( handlers ) {
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if ( fn ) {
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l = handlers.length;
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while ( l-- ) {
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if ( handlers[l] === fn ) {
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handlers.splice( l, 1 );
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}
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}
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} else {
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handlers.length = 0;
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}
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if ( !handlers.length ) {
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delete this._events[ type ];
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if ( !customEvents[ type ] ) {
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if ( type === 'selectionchange' ) {
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target = this._doc;
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}
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target.removeEventListener( type, this, true );
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}
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}
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}
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return this;
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};
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// --- Selection and Path ---
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proto._createRange =
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function ( range, startOffset, endContainer, endOffset ) {
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if ( range instanceof this._win.Range ) {
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return range.cloneRange();
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}
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var domRange = this._doc.createRange();
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domRange.setStart( range, startOffset );
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if ( endContainer ) {
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domRange.setEnd( endContainer, endOffset );
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} else {
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domRange.setEnd( range, startOffset );
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}
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return domRange;
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};
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proto.getCursorPosition = function ( range ) {
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if ( ( !range && !( range = this.getSelection() ) ) ||
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!range.getBoundingClientRect ) {
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return null;
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}
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// Get the bounding rect
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var rect = range.getBoundingClientRect();
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var node, parent;
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if ( rect && !rect.top ) {
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this._ignoreChange = true;
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node = this._doc.createElement( 'SPAN' );
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node.textContent = ZWS;
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insertNodeInRange( range, node );
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rect = node.getBoundingClientRect();
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parent = node.parentNode;
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parent.removeChild( node );
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mergeInlines( parent, range );
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}
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return rect;
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};
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proto._moveCursorTo = function ( toStart ) {
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var root = this._root,
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range = this._createRange( root, toStart ? 0 : root.childNodes.length );
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moveRangeBoundariesDownTree( range );
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this.setSelection( range );
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return this;
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};
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proto.moveCursorToStart = function () {
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return this._moveCursorTo( true );
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};
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proto.moveCursorToEnd = function () {
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return this._moveCursorTo( false );
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};
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var getWindowSelection = function ( self ) {
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return self._win.getSelection() || null;
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};
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proto.setSelection = function ( range ) {
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if ( range ) {
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this._lastSelection = range;
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// If we're setting selection, that automatically, and synchronously, // triggers a focus event. So just store the selection and mark it as
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// needing restore on focus.
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if ( !this._isFocused ) {
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enableRestoreSelection.call( this );
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} else if ( isAndroid && !this._restoreSelection ) {
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// Android closes the keyboard on removeAllRanges() and doesn't
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// open it again when addRange() is called, sigh.
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// Since Android doesn't trigger a focus event in setSelection(),
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// use a blur/focus dance to work around this by letting the
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// selection be restored on focus.
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// Need to check for !this._restoreSelection to avoid infinite loop
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enableRestoreSelection.call( this );
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this.blur();
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this.focus();
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} else {
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// iOS bug: if you don't focus the iframe before setting the
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// selection, you can end up in a state where you type but the input
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// doesn't get directed into the contenteditable area but is instead
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// lost in a black hole. Very strange.
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if ( isIOS ) {
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this._win.focus();
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}
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var sel = getWindowSelection( this );
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if ( sel ) {
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sel.removeAllRanges();
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sel.addRange( range );
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}
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}
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}
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return this;
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};
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proto.getSelection = function () {
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var sel = getWindowSelection( this );
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var root = this._root;
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var selection, startContainer, endContainer;
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if ( sel && sel.rangeCount ) {
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selection = sel.getRangeAt( 0 ).cloneRange();
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startContainer = selection.startContainer;
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endContainer = selection.endContainer;
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// FF can return the selection as being inside an <img>. WTF?
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if ( startContainer && isLeaf( startContainer ) ) {
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selection.setStartBefore( startContainer );
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}
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if ( endContainer && isLeaf( endContainer ) ) {
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selection.setEndBefore( endContainer );
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}
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}
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if ( selection &&
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isOrContains( root, selection.commonAncestorContainer ) ) {
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this._lastSelection = selection;
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} else {
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selection = this._lastSelection;
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}
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if ( !selection ) {
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selection = this._createRange( root.firstChild, 0 );
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}
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return selection;
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};
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function enableRestoreSelection () {
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this._restoreSelection = true;
|
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}
|
|
function disableRestoreSelection () {
|
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this._restoreSelection = false;
|
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}
|
|
function restoreSelection () {
|
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if ( this._restoreSelection ) {
|
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this.setSelection( this._lastSelection );
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}
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}
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|
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proto.getSelectedText = function () {
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var range = this.getSelection(),
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walker = new TreeWalker(
|
|
range.commonAncestorContainer,
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|
SHOW_TEXT|SHOW_ELEMENT,
|
|
function ( node ) {
|
|
return isNodeContainedInRange( range, node, true );
|
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}
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),
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startContainer = range.startContainer,
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endContainer = range.endContainer,
|
|
node = walker.currentNode = startContainer,
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textContent = '',
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addedTextInBlock = false,
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value;
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|
|
if ( !walker.filter( node ) ) {
|
|
node = walker.nextNode();
|
|
}
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|
|
|
while ( node ) {
|
|
if ( node.nodeType === TEXT_NODE ) {
|
|
value = node.data;
|
|
if ( value && ( /\S/.test( value ) ) ) {
|
|
if ( node === endContainer ) {
|
|
value = value.slice( 0, range.endOffset );
|
|
}
|
|
if ( node === startContainer ) {
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|
value = value.slice( range.startOffset );
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|
}
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|
textContent += value;
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|
addedTextInBlock = true;
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|
}
|
|
} else if ( node.nodeName === 'BR' ||
|
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addedTextInBlock && !isInline( node ) ) {
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textContent += '\n';
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addedTextInBlock = false;
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|
}
|
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node = walker.nextNode();
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|
}
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return textContent;
|
|
};
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|
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proto.getPath = function () {
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|
return this._path;
|
|
};
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|
|
|
// --- Workaround for browsers that can't focus empty text nodes ---
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|
|
|
// WebKit bug: https://bugs.webkit.org/show_bug.cgi?id=15256
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|
|
|
// Walk down the tree starting at the root and remove any ZWS. If the node only
|
|
// contained ZWS space then remove it too. We may want to keep one ZWS node at
|
|
// the bottom of the tree so the block can be selected. Define that node as the
|
|
// keepNode.
|
|
var removeZWS = function ( root, keepNode ) {
|
|
var walker = new TreeWalker( root, SHOW_TEXT, function () {
|
|
return true;
|
|
}, false ),
|
|
parent, node, index;
|
|
while ( node = walker.nextNode() ) {
|
|
while ( ( index = node.data.indexOf( ZWS ) ) > -1 &&
|
|
( !keepNode || node.parentNode !== keepNode ) ) {
|
|
if ( node.length === 1 ) {
|
|
do {
|
|
parent = node.parentNode;
|
|
parent.removeChild( node );
|
|
node = parent;
|
|
walker.currentNode = parent;
|
|
} while ( isInline( node ) && !getLength( node ) );
|
|
break;
|
|
} else {
|
|
node.deleteData( index, 1 );
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
proto._didAddZWS = function () {
|
|
this._hasZWS = true;
|
|
};
|
|
proto._removeZWS = function () {
|
|
if ( !this._hasZWS ) {
|
|
return;
|
|
}
|
|
removeZWS( this._root );
|
|
this._hasZWS = false;
|
|
};
|
|
|
|
// --- Path change events ---
|
|
|
|
proto._updatePath = function ( range, force ) {
|
|
var anchor = range.startContainer,
|
|
focus = range.endContainer,
|
|
newPath;
|
|
if ( force || anchor !== this._lastAnchorNode ||
|
|
focus !== this._lastFocusNode ) {
|
|
this._lastAnchorNode = anchor;
|
|
this._lastFocusNode = focus;
|
|
newPath = ( anchor && focus ) ? ( anchor === focus ) ?
|
|
getPath( focus, this._root ) : '(selection)' : '';
|
|
if ( this._path !== newPath ) {
|
|
this._path = newPath;
|
|
this.fireEvent( 'pathChange', { path: newPath } );
|
|
}
|
|
}
|
|
if ( !range.collapsed ) {
|
|
this.fireEvent( 'select' );
|
|
}
|
|
};
|
|
|
|
// selectionchange is fired synchronously in IE when removing current selection
|
|
// and when setting new selection; keyup/mouseup may have processing we want
|
|
// to do first. Either way, send to next event loop.
|
|
proto._updatePathOnEvent = function () {
|
|
var self = this;
|
|
if ( !self._willUpdatePath ) {
|
|
self._willUpdatePath = true;
|
|
setTimeout( function () {
|
|
self._willUpdatePath = false;
|
|
self._updatePath( self.getSelection() );
|
|
}, 0 );
|
|
}
|
|
};
|
|
|
|
// --- Focus ---
|
|
|
|
proto.focus = function () {
|
|
this._root.focus();
|
|
|
|
if ( isIE ) {
|
|
this.fireEvent( 'focus' );
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
proto.blur = function () {
|
|
this._root.blur();
|
|
|
|
if ( isIE ) {
|
|
this.fireEvent( 'blur' );
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
// --- Bookmarking ---
|
|
|
|
var startSelectionId = 'squire-selection-start';
|
|
var endSelectionId = 'squire-selection-end';
|
|
|
|
proto._saveRangeToBookmark = function ( range ) {
|
|
var startNode = this.createElement( 'INPUT', {
|
|
id: startSelectionId,
|
|
type: 'hidden'
|
|
}),
|
|
endNode = this.createElement( 'INPUT', {
|
|
id: endSelectionId,
|
|
type: 'hidden'
|
|
}),
|
|
temp;
|
|
|
|
insertNodeInRange( range, startNode );
|
|
range.collapse( false );
|
|
insertNodeInRange( range, 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 );
|
|
};
|
|
|
|
proto._getRangeAndRemoveBookmark = function ( range ) {
|
|
var root = this._root,
|
|
start = root.querySelector( '#' + startSelectionId ),
|
|
end = root.querySelector( '#' + endSelectionId );
|
|
|
|
if ( start && end ) {
|
|
var startContainer = start.parentNode,
|
|
endContainer = end.parentNode,
|
|
startOffset = indexOf.call( startContainer.childNodes, start ),
|
|
endOffset = indexOf.call( endContainer.childNodes, end );
|
|
|
|
if ( startContainer === endContainer ) {
|
|
endOffset -= 1;
|
|
}
|
|
|
|
detach( start );
|
|
detach( end );
|
|
|
|
if ( !range ) {
|
|
range = this._doc.createRange();
|
|
}
|
|
range.setStart( startContainer, startOffset );
|
|
range.setEnd( endContainer, endOffset );
|
|
|
|
// Merge any text nodes we split
|
|
mergeInlines( startContainer, range );
|
|
if ( startContainer !== endContainer ) {
|
|
mergeInlines( endContainer, range );
|
|
}
|
|
|
|
// If we didn't split a text node, we should move into any adjacent
|
|
// text node to current selection point
|
|
if ( range.collapsed ) {
|
|
startContainer = range.startContainer;
|
|
if ( startContainer.nodeType === TEXT_NODE ) {
|
|
endContainer = startContainer.childNodes[ range.startOffset ];
|
|
if ( !endContainer || endContainer.nodeType !== TEXT_NODE ) {
|
|
endContainer =
|
|
startContainer.childNodes[ range.startOffset - 1 ];
|
|
}
|
|
if ( endContainer && endContainer.nodeType === TEXT_NODE ) {
|
|
range.setStart( endContainer, 0 );
|
|
range.collapse( true );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return range || null;
|
|
};
|
|
|
|
// --- Undo ---
|
|
|
|
proto._keyUpDetectChange = 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 ) ) {
|
|
this._docWasChanged();
|
|
}
|
|
};
|
|
|
|
proto._docWasChanged = function () {
|
|
if ( canWeakMap ) {
|
|
nodeCategoryCache = new WeakMap();
|
|
}
|
|
if ( this._ignoreAllChanges ) {
|
|
return;
|
|
}
|
|
|
|
if ( canObserveMutations && this._ignoreChange ) {
|
|
this._ignoreChange = false;
|
|
return;
|
|
}
|
|
if ( this._isInUndoState ) {
|
|
this._isInUndoState = false;
|
|
this.fireEvent( 'undoStateChange', {
|
|
canUndo: true,
|
|
canRedo: false
|
|
});
|
|
}
|
|
this.fireEvent( 'input' );
|
|
};
|
|
|
|
// Leaves bookmark
|
|
proto._recordUndoState = function ( range ) {
|
|
// Don't record if we're already in an undo state
|
|
if ( !this._isInUndoState ) {
|
|
// Advance pointer to new position
|
|
var undoIndex = this._undoIndex += 1;
|
|
var undoStack = this._undoStack;
|
|
var undoConfig = this._config.undo;
|
|
var undoThreshold = undoConfig.documentSizeThreshold;
|
|
var undoLimit = undoConfig.undoLimit;
|
|
var html;
|
|
|
|
// Truncate stack if longer (i.e. if has been previously undone)
|
|
if ( undoIndex < this._undoStackLength ) {
|
|
undoStack.length = this._undoStackLength = undoIndex;
|
|
}
|
|
|
|
// Get data
|
|
if ( range ) {
|
|
this._saveRangeToBookmark( range );
|
|
}
|
|
html = this._getHTML();
|
|
|
|
// If this document is above the configured size threshold,
|
|
// limit the number of saved undo states.
|
|
// Threshold is in bytes, JS uses 2 bytes per character
|
|
if ( undoThreshold > -1 && html.length * 2 > undoThreshold ) {
|
|
if ( undoLimit > -1 && undoIndex > undoLimit ) {
|
|
undoStack.splice( 0, undoIndex - undoLimit );
|
|
undoIndex = this._undoIndex = undoLimit;
|
|
this._undoStackLength = undoLimit;
|
|
}
|
|
}
|
|
|
|
// Save data
|
|
undoStack[ undoIndex ] = html;
|
|
this._undoStackLength += 1;
|
|
this._isInUndoState = true;
|
|
}
|
|
};
|
|
|
|
proto.saveUndoState = function ( range ) {
|
|
if ( range === undefined ) {
|
|
range = this.getSelection();
|
|
}
|
|
if ( !this._isInUndoState ) {
|
|
this._recordUndoState( range );
|
|
this._getRangeAndRemoveBookmark( range );
|
|
}
|
|
return this;
|
|
};
|
|
|
|
proto.undo = function () {
|
|
// Sanity check: must not be at beginning of the history stack
|
|
if ( this._undoIndex !== 0 || !this._isInUndoState ) {
|
|
// Make sure any changes since last checkpoint are saved.
|
|
this._recordUndoState( this.getSelection() );
|
|
|
|
this._undoIndex -= 1;
|
|
this._setHTML( this._undoStack[ this._undoIndex ] );
|
|
var range = this._getRangeAndRemoveBookmark();
|
|
if ( range ) {
|
|
this.setSelection( range );
|
|
}
|
|
this._isInUndoState = true;
|
|
this.fireEvent( 'undoStateChange', {
|
|
canUndo: this._undoIndex !== 0,
|
|
canRedo: true
|
|
});
|
|
this.fireEvent( 'input' );
|
|
}
|
|
return this;
|
|
};
|
|
|
|
proto.redo = function () {
|
|
// Sanity check: must not be at end of stack and must be in an undo
|
|
// state.
|
|
var undoIndex = this._undoIndex,
|
|
undoStackLength = this._undoStackLength;
|
|
if ( undoIndex + 1 < undoStackLength && this._isInUndoState ) {
|
|
this._undoIndex += 1;
|
|
this._setHTML( this._undoStack[ this._undoIndex ] );
|
|
var range = this._getRangeAndRemoveBookmark();
|
|
if ( range ) {
|
|
this.setSelection( range );
|
|
}
|
|
this.fireEvent( 'undoStateChange', {
|
|
canUndo: true,
|
|
canRedo: undoIndex + 2 < undoStackLength
|
|
});
|
|
this.fireEvent( 'input' );
|
|
}
|
|
return this;
|
|
};
|
|
|
|
// --- Inline formatting ---
|
|
|
|
// Looks for matching tag and attributes, so won't work
|
|
// if <strong> instead of <b> etc.
|
|
proto.hasFormat = function ( tag, attributes, range ) {
|
|
// 1. Normalise the arguments and get selection
|
|
tag = tag.toUpperCase();
|
|
if ( !attributes ) { attributes = {}; }
|
|
if ( !range && !( range = this.getSelection() ) ) {
|
|
return false;
|
|
}
|
|
|
|
// Sanitize range to prevent weird IE artifacts
|
|
if ( !range.collapsed &&
|
|
range.startContainer.nodeType === TEXT_NODE &&
|
|
range.startOffset === range.startContainer.length &&
|
|
range.startContainer.nextSibling ) {
|
|
range.setStartBefore( range.startContainer.nextSibling );
|
|
}
|
|
if ( !range.collapsed &&
|
|
range.endContainer.nodeType === TEXT_NODE &&
|
|
range.endOffset === 0 &&
|
|
range.endContainer.previousSibling ) {
|
|
range.setEndAfter( range.endContainer.previousSibling );
|
|
}
|
|
|
|
// If the common ancestor is inside the tag we require, we definitely
|
|
// have the format.
|
|
var root = this._root;
|
|
var common = range.commonAncestorContainer;
|
|
var walker, node;
|
|
if ( getNearest( common, 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 ( common.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( common, SHOW_TEXT, function ( node ) {
|
|
return isNodeContainedInRange( range, node, true );
|
|
}, false );
|
|
|
|
var seenNode = false;
|
|
while ( node = walker.nextNode() ) {
|
|
if ( !getNearest( node, root, tag, attributes ) ) {
|
|
return false;
|
|
}
|
|
seenNode = true;
|
|
}
|
|
|
|
return seenNode;
|
|
};
|
|
|
|
// Extracts the font-family and font-size (if any) of the element
|
|
// holding the cursor. If there's a selection, returns an empty object.
|
|
proto.getFontInfo = function ( range ) {
|
|
var fontInfo = {
|
|
color: undefined,
|
|
backgroundColor: undefined,
|
|
family: undefined,
|
|
size: undefined
|
|
};
|
|
var seenAttributes = 0;
|
|
var element, style, attr;
|
|
|
|
if ( !range && !( range = this.getSelection() ) ) {
|
|
return fontInfo;
|
|
}
|
|
|
|
element = range.commonAncestorContainer;
|
|
if ( range.collapsed || element.nodeType === TEXT_NODE ) {
|
|
if ( element.nodeType === TEXT_NODE ) {
|
|
element = element.parentNode;
|
|
}
|
|
while ( seenAttributes < 4 && element ) {
|
|
if ( style = element.style ) {
|
|
if ( !fontInfo.color && ( attr = style.color ) ) {
|
|
fontInfo.color = attr;
|
|
seenAttributes += 1;
|
|
}
|
|
if ( !fontInfo.backgroundColor &&
|
|
( attr = style.backgroundColor ) ) {
|
|
fontInfo.backgroundColor = attr;
|
|
seenAttributes += 1;
|
|
}
|
|
if ( !fontInfo.family && ( attr = style.fontFamily ) ) {
|
|
fontInfo.family = attr;
|
|
seenAttributes += 1;
|
|
}
|
|
if ( !fontInfo.size && ( attr = style.fontSize ) ) {
|
|
fontInfo.size = attr;
|
|
seenAttributes += 1;
|
|
}
|
|
}
|
|
element = element.parentNode;
|
|
}
|
|
}
|
|
return fontInfo;
|
|
};
|
|
|
|
proto._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 root = this._root;
|
|
var el, walker, startContainer, endContainer, startOffset, endOffset,
|
|
node, needsFormat, block;
|
|
|
|
if ( range.collapsed ) {
|
|
el = fixCursor( this.createElement( tag, attributes ), root );
|
|
insertNodeInRange( range, el );
|
|
range.setStart( el.firstChild, el.firstChild.length );
|
|
range.collapse( true );
|
|
|
|
// Clean up any previous formats that may have been set on this block
|
|
// that are unused.
|
|
block = el;
|
|
while ( isInline( block ) ) {
|
|
block = block.parentNode;
|
|
}
|
|
removeZWS( block, el );
|
|
}
|
|
// 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 {
|
|
// Create an iterator to walk over all the text nodes under this
|
|
// ancestor which are in the range and not already formatted
|
|
// correctly.
|
|
//
|
|
// In Blink/WebKit, empty blocks may have no text nodes, just a <br>.
|
|
// Therefore we wrap this in the tag as well, as this will then cause it
|
|
// to apply when the user types something in the block, which is
|
|
// presumably what was intended.
|
|
//
|
|
// IMG tags are included because we may want to create a link around
|
|
// them, and adding other styles is harmless.
|
|
walker = new TreeWalker(
|
|
range.commonAncestorContainer,
|
|
SHOW_TEXT|SHOW_ELEMENT,
|
|
function ( node ) {
|
|
return ( node.nodeType === TEXT_NODE ||
|
|
node.nodeName === 'BR' ||
|
|
node.nodeName === 'IMG'
|
|
) && isNodeContainedInRange( range, node, true );
|
|
},
|
|
false
|
|
);
|
|
|
|
// Start at the beginning node of the range and iterate through
|
|
// all the nodes in the range that need formatting.
|
|
startContainer = range.startContainer;
|
|
startOffset = range.startOffset;
|
|
endContainer = range.endContainer;
|
|
endOffset = range.endOffset;
|
|
|
|
// Make sure we start with a valid node.
|
|
walker.currentNode = startContainer;
|
|
if ( !walker.filter( startContainer ) ) {
|
|
startContainer = walker.nextNode();
|
|
startOffset = 0;
|
|
}
|
|
|
|
// If there are no interesting nodes in the selection, abort
|
|
if ( !startContainer ) {
|
|
return range;
|
|
}
|
|
|
|
do {
|
|
node = walker.currentNode;
|
|
needsFormat = !getNearest( node, root, tag, attributes );
|
|
if ( needsFormat ) {
|
|
// <br> can never be a container node, so must have a text node
|
|
// if node == (end|start)Container
|
|
if ( node === endContainer && node.length > endOffset ) {
|
|
node.splitText( endOffset );
|
|
}
|
|
if ( node === startContainer && startOffset ) {
|
|
node = node.splitText( startOffset );
|
|
if ( endContainer === startContainer ) {
|
|
endContainer = node;
|
|
endOffset -= startOffset;
|
|
}
|
|
startContainer = node;
|
|
startOffset = 0;
|
|
}
|
|
el = this.createElement( tag, attributes );
|
|
replaceWith( node, el );
|
|
el.appendChild( node );
|
|
}
|
|
} while ( walker.nextNode() );
|
|
|
|
// If we don't finish inside a text node, offset may have changed.
|
|
if ( endContainer.nodeType !== TEXT_NODE ) {
|
|
if ( node.nodeType === TEXT_NODE ) {
|
|
endContainer = node;
|
|
endOffset = node.length;
|
|
} else {
|
|
// If <br>, we must have just wrapped it, so it must have only
|
|
// one child
|
|
endContainer = node.parentNode;
|
|
endOffset = 1;
|
|
}
|
|
}
|
|
|
|
// Now set the selection to as it was before
|
|
range = this._createRange(
|
|
startContainer, startOffset, endContainer, endOffset );
|
|
}
|
|
return range;
|
|
};
|
|
|
|
proto._removeFormat = function ( tag, attributes, range, partial ) {
|
|
// Add bookmark
|
|
this._saveRangeToBookmark( range );
|
|
|
|
// We need a node in the selection to break the surrounding
|
|
// formatted text.
|
|
var doc = this._doc,
|
|
fixer;
|
|
if ( range.collapsed ) {
|
|
if ( cantFocusEmptyTextNodes ) {
|
|
fixer = doc.createTextNode( ZWS );
|
|
this._didAddZWS();
|
|
} else {
|
|
fixer = doc.createTextNode( '' );
|
|
}
|
|
insertNodeInRange( range, 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 ( isNodeContainedInRange( range, 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 ( !isNodeContainedInRange( range, 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 isNodeContainedInRange( range, 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:
|
|
this._getRangeAndRemoveBookmark( range );
|
|
if ( fixer ) {
|
|
range.collapse( false );
|
|
}
|
|
mergeInlines( root, range );
|
|
|
|
return range;
|
|
};
|
|
|
|
proto.changeFormat = function ( add, remove, range, partial ) {
|
|
// Normalise the arguments and get selection
|
|
if ( !range && !( range = this.getSelection() ) ) {
|
|
return this;
|
|
}
|
|
|
|
// Save undo checkpoint
|
|
this.saveUndoState( range );
|
|
|
|
if ( remove ) {
|
|
range = this._removeFormat( remove.tag.toUpperCase(),
|
|
remove.attributes || {}, range, partial );
|
|
}
|
|
if ( add ) {
|
|
range = this._addFormat( add.tag.toUpperCase(),
|
|
add.attributes || {}, range );
|
|
}
|
|
|
|
this.setSelection( range );
|
|
this._updatePath( range, true );
|
|
|
|
// We're not still in an undo state
|
|
if ( !canObserveMutations ) {
|
|
this._docWasChanged();
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
// --- Block formatting ---
|
|
|
|
var tagAfterSplit = {
|
|
DT: 'DD',
|
|
DD: 'DT',
|
|
LI: 'LI'
|
|
};
|
|
|
|
var splitBlock = function ( self, block, node, offset ) {
|
|
var splitTag = tagAfterSplit[ block.nodeName ],
|
|
splitProperties = null,
|
|
nodeAfterSplit = split( node, offset, block.parentNode, self._root ),
|
|
config = self._config;
|
|
|
|
if ( !splitTag ) {
|
|
splitTag = config.blockTag;
|
|
splitProperties = config.blockAttributes;
|
|
}
|
|
|
|
// Make sure the new node is the correct type.
|
|
if ( !hasTagAttributes( nodeAfterSplit, splitTag, splitProperties ) ) {
|
|
block = createElement( nodeAfterSplit.ownerDocument,
|
|
splitTag, splitProperties );
|
|
if ( nodeAfterSplit.dir ) {
|
|
block.dir = nodeAfterSplit.dir;
|
|
}
|
|
replaceWith( nodeAfterSplit, block );
|
|
block.appendChild( empty( nodeAfterSplit ) );
|
|
nodeAfterSplit = block;
|
|
}
|
|
return nodeAfterSplit;
|
|
};
|
|
|
|
proto.forEachBlock = function ( fn, mutates, range ) {
|
|
if ( !range && !( range = this.getSelection() ) ) {
|
|
return this;
|
|
}
|
|
|
|
// Save undo checkpoint
|
|
if ( mutates ) {
|
|
this.saveUndoState( range );
|
|
}
|
|
|
|
var root = this._root;
|
|
var start = getStartBlockOfRange( range, root );
|
|
var end = getEndBlockOfRange( range, root );
|
|
if ( start && end ) {
|
|
do {
|
|
if ( fn( start ) || start === end ) { break; }
|
|
} while ( start = getNextBlock( start, root ) );
|
|
}
|
|
|
|
if ( mutates ) {
|
|
this.setSelection( range );
|
|
|
|
// Path may have changed
|
|
this._updatePath( range, true );
|
|
|
|
// We're not still in an undo state
|
|
if ( !canObserveMutations ) {
|
|
this._docWasChanged();
|
|
}
|
|
}
|
|
return this;
|
|
};
|
|
|
|
proto.modifyBlocks = function ( modify, range ) {
|
|
if ( !range && !( range = this.getSelection() ) ) {
|
|
return this;
|
|
}
|
|
|
|
// 1. Save undo checkpoint and bookmark selection
|
|
if ( this._isInUndoState ) {
|
|
this._saveRangeToBookmark( range );
|
|
} else {
|
|
this._recordUndoState( range );
|
|
}
|
|
|
|
var root = this._root;
|
|
var frag;
|
|
|
|
// 2. Expand range to block boundaries
|
|
expandRangeToBlockBoundaries( range, root );
|
|
|
|
// 3. Remove range.
|
|
moveRangeBoundariesUpTree( range, root );
|
|
frag = extractContentsOfRange( range, root, root );
|
|
|
|
// 4. Modify tree of fragment and reinsert.
|
|
insertNodeInRange( range, modify.call( this, frag ) );
|
|
|
|
// 5. Merge containers at edges
|
|
if ( range.endOffset < range.endContainer.childNodes.length ) {
|
|
mergeContainers( range.endContainer.childNodes[ range.endOffset ], root );
|
|
}
|
|
mergeContainers( range.startContainer.childNodes[ range.startOffset ], root );
|
|
|
|
// 6. Restore selection
|
|
this._getRangeAndRemoveBookmark( range );
|
|
this.setSelection( range );
|
|
this._updatePath( range, true );
|
|
|
|
// 7. We're not still in an undo state
|
|
if ( !canObserveMutations ) {
|
|
this._docWasChanged();
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
var increaseBlockQuoteLevel = function ( frag ) {
|
|
return this.createElement( 'BLOCKQUOTE',
|
|
this._config.tagAttributes.blockquote, [
|
|
frag
|
|
]);
|
|
};
|
|
|
|
var decreaseBlockQuoteLevel = function ( frag ) {
|
|
var root = this._root;
|
|
var blockquotes = frag.querySelectorAll( 'blockquote' );
|
|
Array.prototype.filter.call( blockquotes, function ( el ) {
|
|
return !getNearest( el.parentNode, root, 'BLOCKQUOTE' );
|
|
}).forEach( function ( el ) {
|
|
replaceWith( el, empty( el ) );
|
|
});
|
|
return frag;
|
|
};
|
|
|
|
var removeBlockQuote = function (/* frag */) {
|
|
return this.createDefaultBlock([
|
|
this.createElement( 'INPUT', {
|
|
id: startSelectionId,
|
|
type: 'hidden'
|
|
}),
|
|
this.createElement( 'INPUT', {
|
|
id: endSelectionId,
|
|
type: 'hidden'
|
|
})
|
|
]);
|
|
};
|
|
|
|
var makeList = function ( self, frag, type ) {
|
|
var walker = getBlockWalker( frag, self._root ),
|
|
node, tag, prev, newLi,
|
|
tagAttributes = self._config.tagAttributes,
|
|
listAttrs = tagAttributes[ type.toLowerCase() ],
|
|
listItemAttrs = tagAttributes.li;
|
|
|
|
while ( node = walker.nextNode() ) {
|
|
if ( node.parentNode.nodeName === 'LI' ) {
|
|
node = node.parentNode;
|
|
walker.currentNode = node.lastChild;
|
|
}
|
|
if ( node.nodeName !== 'LI' ) {
|
|
newLi = self.createElement( 'LI', listItemAttrs );
|
|
if ( node.dir ) {
|
|
newLi.dir = node.dir;
|
|
}
|
|
|
|
// Have we replaced the previous block with a new <ul>/<ol>?
|
|
if ( ( prev = node.previousSibling ) && prev.nodeName === type ) {
|
|
prev.appendChild( newLi );
|
|
detach( node );
|
|
}
|
|
// Otherwise, replace this block with the <ul>/<ol>
|
|
else {
|
|
replaceWith(
|
|
node,
|
|
self.createElement( type, listAttrs, [
|
|
newLi
|
|
])
|
|
);
|
|
}
|
|
newLi.appendChild( empty( node ) );
|
|
walker.currentNode = newLi;
|
|
} else {
|
|
node = node.parentNode;
|
|
tag = node.nodeName;
|
|
if ( tag !== type && ( /^[OU]L$/.test( tag ) ) ) {
|
|
replaceWith( node,
|
|
self.createElement( type, listAttrs, [ empty( node ) ] )
|
|
);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
var makeUnorderedList = function ( frag ) {
|
|
makeList( this, frag, 'UL' );
|
|
return frag;
|
|
};
|
|
|
|
var makeOrderedList = function ( frag ) {
|
|
makeList( this, frag, 'OL' );
|
|
return frag;
|
|
};
|
|
|
|
var removeList = function ( frag ) {
|
|
var lists = frag.querySelectorAll( 'UL, OL' ),
|
|
items = frag.querySelectorAll( 'LI' ),
|
|
root = this._root,
|
|
i, l, list, listFrag, item;
|
|
for ( i = 0, l = lists.length; i < l; i += 1 ) {
|
|
list = lists[i];
|
|
listFrag = empty( list );
|
|
fixContainer( listFrag, root );
|
|
replaceWith( list, listFrag );
|
|
}
|
|
|
|
for ( i = 0, l = items.length; i < l; i += 1 ) {
|
|
item = items[i];
|
|
if ( isBlock( item ) ) {
|
|
replaceWith( item,
|
|
this.createDefaultBlock([ empty( item ) ])
|
|
);
|
|
} else {
|
|
fixContainer( item, root );
|
|
replaceWith( item, empty( item ) );
|
|
}
|
|
}
|
|
return frag;
|
|
};
|
|
|
|
var increaseListLevel = function ( frag ) {
|
|
var items = frag.querySelectorAll( 'LI' ),
|
|
i, l, item,
|
|
type, newParent,
|
|
tagAttributes = this._config.tagAttributes,
|
|
listAttrs;
|
|
for ( i = 0, l = items.length; i < l; i += 1 ) {
|
|
item = items[i];
|
|
if ( !isContainer( item.firstChild ) ) {
|
|
// type => 'UL' or 'OL'
|
|
type = item.parentNode.nodeName;
|
|
newParent = item.previousSibling;
|
|
if ( !newParent || !( newParent = newParent.lastChild ) ||
|
|
newParent.nodeName !== type ) {
|
|
listAttrs = tagAttributes[ type.toLowerCase() ];
|
|
newParent = this.createElement( type, listAttrs );
|
|
|
|
replaceWith(
|
|
item,
|
|
newParent
|
|
);
|
|
}
|
|
newParent.appendChild( item );
|
|
}
|
|
}
|
|
return frag;
|
|
};
|
|
|
|
var decreaseListLevel = function ( frag ) {
|
|
var root = this._root;
|
|
var items = frag.querySelectorAll( 'LI' );
|
|
Array.prototype.filter.call( items, function ( el ) {
|
|
return !isContainer( el.firstChild );
|
|
}).forEach( function ( item ) {
|
|
var parent = item.parentNode,
|
|
newParent = parent.parentNode,
|
|
first = item.firstChild,
|
|
node = first,
|
|
next;
|
|
if ( item.previousSibling ) {
|
|
parent = split( parent, item, newParent, root );
|
|
}
|
|
|
|
// if the new parent is another list then we simply move the node
|
|
// e.g. `ul > ul > li` becomes `ul > li`
|
|
if ( /^[OU]L$/.test( newParent.nodeName ) ) {
|
|
newParent.insertBefore( item, parent );
|
|
if ( !parent.firstChild ) {
|
|
newParent.removeChild( parent );
|
|
}
|
|
} else {
|
|
while ( node ) {
|
|
next = node.nextSibling;
|
|
if ( isContainer( node ) ) {
|
|
break;
|
|
}
|
|
newParent.insertBefore( node, parent );
|
|
node = next;
|
|
}
|
|
}
|
|
if ( newParent.nodeName === 'LI' && first.previousSibling ) {
|
|
split( newParent, first, newParent.parentNode, root );
|
|
}
|
|
while ( item !== frag && !item.childNodes.length ) {
|
|
parent = item.parentNode;
|
|
parent.removeChild( item );
|
|
item = parent;
|
|
}
|
|
}, this );
|
|
fixContainer( frag, root );
|
|
return frag;
|
|
};
|
|
|
|
proto._ensureBottomLine = function () {
|
|
var root = this._root;
|
|
var last = root.lastElementChild;
|
|
if ( !last ||
|
|
last.nodeName !== this._config.blockTag || !isBlock( last ) ) {
|
|
root.appendChild( this.createDefaultBlock() );
|
|
}
|
|
};
|
|
|
|
// --- Keyboard interaction ---
|
|
|
|
proto.setKeyHandler = function ( key, fn ) {
|
|
this._keyHandlers[ key ] = fn;
|
|
return this;
|
|
};
|
|
|
|
// --- Get/Set data ---
|
|
|
|
proto._getHTML = function () {
|
|
return this._root.innerHTML;
|
|
};
|
|
|
|
proto._setHTML = function ( html ) {
|
|
var root = this._root;
|
|
var node = root;
|
|
node.innerHTML = html;
|
|
do {
|
|
fixCursor( node, root );
|
|
} while ( node = getNextBlock( node, root ) );
|
|
this._ignoreChange = true;
|
|
};
|
|
|
|
proto.getHTML = function ( withBookMark ) {
|
|
var brs = [],
|
|
root, node, fixer, html, l, range;
|
|
if ( withBookMark && ( range = this.getSelection() ) ) {
|
|
this._saveRangeToBookmark( range );
|
|
}
|
|
if ( useTextFixer ) {
|
|
root = this._root;
|
|
node = root;
|
|
while ( node = getNextBlock( node, root ) ) {
|
|
if ( !node.textContent && !node.querySelector( 'BR' ) ) {
|
|
fixer = this.createElement( 'BR' );
|
|
node.appendChild( fixer );
|
|
brs.push( fixer );
|
|
}
|
|
}
|
|
}
|
|
html = this._getHTML().replace( /\u200B/g, '' );
|
|
if ( useTextFixer ) {
|
|
l = brs.length;
|
|
while ( l-- ) {
|
|
detach( brs[l] );
|
|
}
|
|
}
|
|
if ( range ) {
|
|
this._getRangeAndRemoveBookmark( range );
|
|
}
|
|
return html;
|
|
};
|
|
|
|
proto.setHTML = function ( html ) {
|
|
var frag = this._doc.createDocumentFragment();
|
|
var div = this.createElement( 'DIV' );
|
|
var root = this._root;
|
|
var child;
|
|
|
|
// Parse HTML into DOM tree
|
|
div.innerHTML = html;
|
|
frag.appendChild( empty( div ) );
|
|
|
|
cleanTree( frag );
|
|
cleanupBRs( frag, root );
|
|
|
|
fixContainer( frag, root );
|
|
|
|
// Fix cursor
|
|
var node = frag;
|
|
while ( node = getNextBlock( node, root ) ) {
|
|
fixCursor( node, root );
|
|
}
|
|
|
|
// Don't fire an input event
|
|
this._ignoreChange = true;
|
|
|
|
// Remove existing root children
|
|
while ( child = root.lastChild ) {
|
|
root.removeChild( child );
|
|
}
|
|
|
|
// And insert new content
|
|
root.appendChild( frag );
|
|
fixCursor( root, root );
|
|
|
|
// Reset the undo stack
|
|
this._undoIndex = -1;
|
|
this._undoStack.length = 0;
|
|
this._undoStackLength = 0;
|
|
this._isInUndoState = false;
|
|
|
|
// Record undo state
|
|
var range = this._getRangeAndRemoveBookmark() ||
|
|
this._createRange( root.firstChild, 0 );
|
|
this.saveUndoState( 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.
|
|
this._lastSelection = range;
|
|
enableRestoreSelection.call( this );
|
|
this._updatePath( range, true );
|
|
|
|
return this;
|
|
};
|
|
|
|
proto.insertElement = function ( el, range ) {
|
|
if ( !range ) { range = this.getSelection(); }
|
|
range.collapse( true );
|
|
if ( isInline( el ) ) {
|
|
insertNodeInRange( range, el );
|
|
range.setStartAfter( el );
|
|
} else {
|
|
// Get containing block node.
|
|
var root = this._root;
|
|
var splitNode = getStartBlockOfRange( range, root ) || root;
|
|
var parent, nodeAfterSplit;
|
|
// While at end of container node, move up DOM tree.
|
|
while ( splitNode !== root && !splitNode.nextSibling ) {
|
|
splitNode = splitNode.parentNode;
|
|
}
|
|
// If in the middle of a container node, split up to root.
|
|
if ( splitNode !== root ) {
|
|
parent = splitNode.parentNode;
|
|
nodeAfterSplit = split( parent, splitNode.nextSibling, root, root );
|
|
}
|
|
if ( nodeAfterSplit ) {
|
|
root.insertBefore( el, nodeAfterSplit );
|
|
} else {
|
|
root.appendChild( el );
|
|
// Insert blank line below block.
|
|
nodeAfterSplit = this.createDefaultBlock();
|
|
root.appendChild( nodeAfterSplit );
|
|
}
|
|
range.setStart( nodeAfterSplit, 0 );
|
|
range.setEnd( nodeAfterSplit, 0 );
|
|
moveRangeBoundariesDownTree( range );
|
|
}
|
|
this.focus();
|
|
this.setSelection( range );
|
|
this._updatePath( range );
|
|
|
|
if ( !canObserveMutations ) {
|
|
this._docWasChanged();
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
proto.insertImage = function ( src, attributes ) {
|
|
var img = this.createElement( 'IMG', mergeObjects({
|
|
src: src
|
|
}, attributes, true ));
|
|
this.insertElement( img );
|
|
return img;
|
|
};
|
|
|
|
var linkRegExp = /\b((?:(?:ht|f)tps?:\/\/|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,}\/)(?:[^\s()<>]+|\([^\s()<>]+\))+(?:\((?:[^\s()<>]+|(?:\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))|([\w\-.%+]+@(?:[\w\-]+\.)+[A-Z]{2,}\b)/i;
|
|
|
|
var addLinks = function ( frag, root, self ) {
|
|
var doc = frag.ownerDocument,
|
|
walker = new TreeWalker( frag, SHOW_TEXT,
|
|
function ( node ) {
|
|
return !getNearest( node, root, 'A' );
|
|
}, false ),
|
|
defaultAttributes = self._config.tagAttributes.a,
|
|
node, data, parent, match, index, endIndex, child;
|
|
while ( node = walker.nextNode() ) {
|
|
data = node.data;
|
|
parent = node.parentNode;
|
|
while ( match = linkRegExp.exec( data ) ) {
|
|
index = match.index;
|
|
endIndex = index + match[0].length;
|
|
if ( index ) {
|
|
child = doc.createTextNode( data.slice( 0, index ) );
|
|
parent.insertBefore( child, node );
|
|
}
|
|
child = self.createElement( 'A', mergeObjects({
|
|
href: match[1] ?
|
|
/^(?:ht|f)tps?:/.test( match[1] ) ?
|
|
match[1] :
|
|
'http://' + match[1] :
|
|
'mailto:' + match[2]
|
|
}, defaultAttributes, false ));
|
|
child.textContent = data.slice( index, endIndex );
|
|
parent.insertBefore( child, node );
|
|
node.data = data = data.slice( endIndex );
|
|
}
|
|
}
|
|
};
|
|
|
|
// Insert HTML at the cursor location. If the selection is not collapsed
|
|
// insertTreeFragmentIntoRange will delete the selection so that it is replaced
|
|
// by the html being inserted.
|
|
proto.insertHTML = function ( html, isPaste ) {
|
|
var range = this.getSelection();
|
|
var doc = this._doc;
|
|
var startFragmentIndex, endFragmentIndex;
|
|
var div, frag, root, node, event;
|
|
|
|
// Edge doesn't just copy the fragment, but includes the surrounding guff
|
|
// including the full <head> of the page. Need to strip this out. If
|
|
// available use DOMPurify to parse and sanitise.
|
|
if ( typeof DOMPurify !== 'undefined' && DOMPurify.isSupported ) {
|
|
frag = DOMPurify.sanitize( html, {
|
|
WHOLE_DOCUMENT: false,
|
|
RETURN_DOM: true,
|
|
RETURN_DOM_FRAGMENT: true
|
|
});
|
|
frag = doc.importNode( frag, true );
|
|
} else {
|
|
if ( isPaste ) {
|
|
startFragmentIndex = html.indexOf( '<!--StartFragment-->' );
|
|
endFragmentIndex = html.lastIndexOf( '<!--EndFragment-->' );
|
|
if ( startFragmentIndex > -1 && endFragmentIndex > -1 ) {
|
|
html = html.slice( startFragmentIndex + 20, endFragmentIndex );
|
|
}
|
|
}
|
|
// Parse HTML into DOM tree
|
|
div = this.createElement( 'DIV' );
|
|
div.innerHTML = html;
|
|
frag = doc.createDocumentFragment();
|
|
frag.appendChild( empty( div ) );
|
|
}
|
|
|
|
// Record undo checkpoint
|
|
this.saveUndoState( range );
|
|
|
|
try {
|
|
root = this._root;
|
|
node = frag;
|
|
event = {
|
|
fragment: frag,
|
|
preventDefault: function () {
|
|
this.defaultPrevented = true;
|
|
},
|
|
defaultPrevented: false
|
|
};
|
|
|
|
addLinks( frag, frag, this );
|
|
cleanTree( frag );
|
|
cleanupBRs( frag, null );
|
|
removeEmptyInlines( frag );
|
|
frag.normalize();
|
|
|
|
while ( node = getNextBlock( node, frag ) ) {
|
|
fixCursor( node, null );
|
|
}
|
|
|
|
if ( isPaste ) {
|
|
this.fireEvent( 'willPaste', event );
|
|
}
|
|
|
|
if ( !event.defaultPrevented ) {
|
|
insertTreeFragmentIntoRange( range, event.fragment, root );
|
|
if ( !canObserveMutations ) {
|
|
this._docWasChanged();
|
|
}
|
|
range.collapse( false );
|
|
this._ensureBottomLine();
|
|
}
|
|
|
|
this.setSelection( range );
|
|
this._updatePath( range, true );
|
|
// Safari sometimes loses focus after paste. Weird.
|
|
if ( isPaste ) {
|
|
this.focus();
|
|
}
|
|
} catch ( error ) {
|
|
this.didError( error );
|
|
}
|
|
return this;
|
|
};
|
|
|
|
var escapeHTMLFragement = function ( text ) {
|
|
return text.split( '&' ).join( '&' )
|
|
.split( '<' ).join( '<' )
|
|
.split( '>' ).join( '>' )
|
|
.split( '"' ).join( '"' );
|
|
};
|
|
|
|
proto.insertPlainText = function ( plainText, isPaste ) {
|
|
var lines = plainText.split( '\n' );
|
|
var config = this._config;
|
|
var tag = config.blockTag;
|
|
var attributes = config.blockAttributes;
|
|
var closeBlock = '</' + tag + '>';
|
|
var openBlock = '<' + tag;
|
|
var attr, i, l, line;
|
|
|
|
for ( attr in attributes ) {
|
|
openBlock += ' ' + attr + '="' +
|
|
escapeHTMLFragement( attributes[ attr ] ) +
|
|
'"';
|
|
}
|
|
openBlock += '>';
|
|
|
|
for ( i = 0, l = lines.length; i < l; i += 1 ) {
|
|
line = lines[i];
|
|
line = escapeHTMLFragement( line ).replace( / (?= )/g, ' ' );
|
|
// Wrap all but first/last lines in <div></div>
|
|
if ( i && i + 1 < l ) {
|
|
line = openBlock + ( line || '<BR>' ) + closeBlock;
|
|
}
|
|
lines[i] = line;
|
|
}
|
|
return this.insertHTML( lines.join( '' ), isPaste );
|
|
};
|
|
|
|
// --- Formatting ---
|
|
|
|
var command = function ( method, arg, arg2 ) {
|
|
return function () {
|
|
this[ method ]( arg, arg2 );
|
|
return this.focus();
|
|
};
|
|
};
|
|
|
|
proto.addStyles = function ( styles ) {
|
|
if ( styles ) {
|
|
var head = this._doc.documentElement.firstChild,
|
|
style = this.createElement( 'STYLE', {
|
|
type: 'text/css'
|
|
});
|
|
style.appendChild( this._doc.createTextNode( styles ) );
|
|
head.appendChild( style );
|
|
}
|
|
return this;
|
|
};
|
|
|
|
proto.bold = command( 'changeFormat', { tag: 'B' } );
|
|
proto.italic = command( 'changeFormat', { tag: 'I' } );
|
|
proto.underline = command( 'changeFormat', { tag: 'U' } );
|
|
proto.strikethrough = command( 'changeFormat', { tag: 'S' } );
|
|
proto.subscript = command( 'changeFormat', { tag: 'SUB' }, { tag: 'SUP' } );
|
|
proto.superscript = command( 'changeFormat', { tag: 'SUP' }, { tag: 'SUB' } );
|
|
|
|
proto.removeBold = command( 'changeFormat', null, { tag: 'B' } );
|
|
proto.removeItalic = command( 'changeFormat', null, { tag: 'I' } );
|
|
proto.removeUnderline = command( 'changeFormat', null, { tag: 'U' } );
|
|
proto.removeStrikethrough = command( 'changeFormat', null, { tag: 'S' } );
|
|
proto.removeSubscript = command( 'changeFormat', null, { tag: 'SUB' } );
|
|
proto.removeSuperscript = command( 'changeFormat', null, { tag: 'SUP' } );
|
|
|
|
proto.makeLink = function ( url, attributes ) {
|
|
var range = this.getSelection();
|
|
if ( range.collapsed ) {
|
|
var protocolEnd = url.indexOf( ':' ) + 1;
|
|
if ( protocolEnd ) {
|
|
while ( url[ protocolEnd ] === '/' ) { protocolEnd += 1; }
|
|
}
|
|
insertNodeInRange(
|
|
range,
|
|
this._doc.createTextNode( url.slice( protocolEnd ) )
|
|
);
|
|
}
|
|
attributes = mergeObjects(
|
|
mergeObjects({
|
|
href: url
|
|
}, attributes, true ),
|
|
this._config.tagAttributes.a,
|
|
false
|
|
);
|
|
|
|
this.changeFormat({
|
|
tag: 'A',
|
|
attributes: attributes
|
|
}, {
|
|
tag: 'A'
|
|
}, range );
|
|
return this.focus();
|
|
};
|
|
proto.removeLink = function () {
|
|
this.changeFormat( null, {
|
|
tag: 'A'
|
|
}, this.getSelection(), true );
|
|
return this.focus();
|
|
};
|
|
|
|
proto.setFontFace = function ( name ) {
|
|
this.changeFormat( name ? {
|
|
tag: 'SPAN',
|
|
attributes: {
|
|
'class': 'font',
|
|
style: 'font-family: ' + name + ', sans-serif;'
|
|
}
|
|
} : null, {
|
|
tag: 'SPAN',
|
|
attributes: { 'class': 'font' }
|
|
});
|
|
return this.focus();
|
|
};
|
|
proto.setFontSize = function ( size ) {
|
|
this.changeFormat( size ? {
|
|
tag: 'SPAN',
|
|
attributes: {
|
|
'class': 'size',
|
|
style: 'font-size: ' +
|
|
( typeof size === 'number' ? size + 'px' : size )
|
|
}
|
|
} : null, {
|
|
tag: 'SPAN',
|
|
attributes: { 'class': 'size' }
|
|
});
|
|
return this.focus();
|
|
};
|
|
|
|
proto.setTextColour = function ( colour ) {
|
|
this.changeFormat( colour ? {
|
|
tag: 'SPAN',
|
|
attributes: {
|
|
'class': 'colour',
|
|
style: 'color:' + colour
|
|
}
|
|
} : null, {
|
|
tag: 'SPAN',
|
|
attributes: { 'class': 'colour' }
|
|
});
|
|
return this.focus();
|
|
};
|
|
|
|
proto.setHighlightColour = function ( colour ) {
|
|
this.changeFormat( colour ? {
|
|
tag: 'SPAN',
|
|
attributes: {
|
|
'class': 'highlight',
|
|
style: 'background-color:' + colour
|
|
}
|
|
} : colour, {
|
|
tag: 'SPAN',
|
|
attributes: { 'class': 'highlight' }
|
|
});
|
|
return this.focus();
|
|
};
|
|
|
|
proto.setTextAlignment = function ( alignment ) {
|
|
this.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 );
|
|
return this.focus();
|
|
};
|
|
|
|
proto.setTextDirection = function ( direction ) {
|
|
this.forEachBlock( function ( block ) {
|
|
block.dir = direction;
|
|
}, true );
|
|
return this.focus();
|
|
};
|
|
|
|
function removeFormatting ( self, root, clean ) {
|
|
var node, next;
|
|
for ( node = root.firstChild; node; node = next ) {
|
|
next = node.nextSibling;
|
|
if ( isInline( node ) ) {
|
|
if ( node.nodeType === TEXT_NODE || node.nodeName === 'BR' || node.nodeName === 'IMG' ) {
|
|
clean.appendChild( node );
|
|
continue;
|
|
}
|
|
} else if ( isBlock( node ) ) {
|
|
clean.appendChild( self.createDefaultBlock([
|
|
removeFormatting(
|
|
self, node, self._doc.createDocumentFragment() )
|
|
]));
|
|
continue;
|
|
}
|
|
removeFormatting( self, node, clean );
|
|
}
|
|
return clean;
|
|
}
|
|
|
|
proto.removeAllFormatting = function ( range ) {
|
|
if ( !range && !( range = this.getSelection() ) || range.collapsed ) {
|
|
return this;
|
|
}
|
|
|
|
var root = this._root;
|
|
var stopNode = range.commonAncestorContainer;
|
|
while ( stopNode && !isBlock( stopNode ) ) {
|
|
stopNode = stopNode.parentNode;
|
|
}
|
|
if ( !stopNode ) {
|
|
expandRangeToBlockBoundaries( range, root );
|
|
stopNode = root;
|
|
}
|
|
if ( stopNode.nodeType === TEXT_NODE ) {
|
|
return this;
|
|
}
|
|
|
|
// Record undo point
|
|
this.saveUndoState( range );
|
|
|
|
// Avoid splitting where we're already at edges.
|
|
moveRangeBoundariesUpTree( range, stopNode );
|
|
|
|
// Split the selection up to the block, or if whole selection in same
|
|
// block, expand range boundaries to ends of block and split up to root.
|
|
var doc = stopNode.ownerDocument;
|
|
var startContainer = range.startContainer;
|
|
var startOffset = range.startOffset;
|
|
var endContainer = range.endContainer;
|
|
var endOffset = range.endOffset;
|
|
|
|
// Split end point first to avoid problems when end and start
|
|
// in same container.
|
|
var formattedNodes = doc.createDocumentFragment();
|
|
var cleanNodes = doc.createDocumentFragment();
|
|
var nodeAfterSplit = split( endContainer, endOffset, stopNode, root );
|
|
var nodeInSplit = split( startContainer, startOffset, stopNode, root );
|
|
var nextNode, childNodes;
|
|
|
|
// Then replace contents in split with a cleaned version of the same:
|
|
// blocks become default blocks, text and leaf nodes survive, everything
|
|
// else is obliterated.
|
|
while ( nodeInSplit !== nodeAfterSplit ) {
|
|
nextNode = nodeInSplit.nextSibling;
|
|
formattedNodes.appendChild( nodeInSplit );
|
|
nodeInSplit = nextNode;
|
|
}
|
|
removeFormatting( this, formattedNodes, cleanNodes );
|
|
cleanNodes.normalize();
|
|
nodeInSplit = cleanNodes.firstChild;
|
|
nextNode = cleanNodes.lastChild;
|
|
|
|
// Restore selection
|
|
childNodes = stopNode.childNodes;
|
|
if ( nodeInSplit ) {
|
|
stopNode.insertBefore( cleanNodes, nodeAfterSplit );
|
|
startOffset = indexOf.call( childNodes, nodeInSplit );
|
|
endOffset = indexOf.call( childNodes, nextNode ) + 1;
|
|
} else {
|
|
startOffset = indexOf.call( childNodes, nodeAfterSplit );
|
|
endOffset = startOffset;
|
|
}
|
|
|
|
// Merge text nodes at edges, if possible
|
|
range.setStart( stopNode, startOffset );
|
|
range.setEnd( stopNode, endOffset );
|
|
mergeInlines( stopNode, range );
|
|
|
|
// And move back down the tree
|
|
moveRangeBoundariesDownTree( range );
|
|
|
|
this.setSelection( range );
|
|
this._updatePath( range, true );
|
|
|
|
return this.focus();
|
|
};
|
|
|
|
proto.increaseQuoteLevel = command( 'modifyBlocks', increaseBlockQuoteLevel );
|
|
proto.decreaseQuoteLevel = command( 'modifyBlocks', decreaseBlockQuoteLevel );
|
|
|
|
proto.makeUnorderedList = command( 'modifyBlocks', makeUnorderedList );
|
|
proto.makeOrderedList = command( 'modifyBlocks', makeOrderedList );
|
|
proto.removeList = command( 'modifyBlocks', removeList );
|
|
|
|
proto.increaseListLevel = command( 'modifyBlocks', increaseListLevel );
|
|
proto.decreaseListLevel = command( 'modifyBlocks', decreaseListLevel );
|