mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-09-27 20:26:46 +00:00
647 lines
18 KiB
JavaScript
647 lines
18 KiB
JavaScript
/**
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* Creates an ve.es.Surface object.
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*
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* @class
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* @constructor
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* @param {jQuery} $container DOM Container to render surface into
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* @param {ve.dm.Surface} model Surface model to view
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*/
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ve.es.Surface = function( $container, model ) {
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// Inheritance
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ve.EventEmitter.call( this );
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// References for use in closures
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var _this = this,
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$document = $( document ),
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$window = $( window );
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// Properties
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this.model = model;
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this.documentView = new ve.es.DocumentNode( this.model.getDocument(), this );
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this.contextView = null;
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this.$ = $container
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.addClass( 'es-surfaceView' )
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.append( this.documentView.$ );
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this.emitUpdateTimeout = undefined;
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this.clipboard = {};
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// Events
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this.documentView.$.bind( {
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'focus': function( e ) {
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_this.documentOnFocus();
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$document.unbind( '.ce-surfaceView' );
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$document.bind( {
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'keydown.ce-surfaceView': function( e ) {
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return _this.onKeyDown( e );
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}
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} );
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},
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'blur': function( e ) {
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_this.documentOnBlur();
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$document.unbind( '.ce-surfaceView' );
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}
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} );
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this.$
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.on( 'cut copy', function( e ) {
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_this.onCutCopy( e );
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} )
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.on( 'paste', function( e ) {
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_this.onPaste( e );
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} )
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.on( 'mousedown', function( e ) {
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return _this.onMouseDown( e );
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} )
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.on( 'compositionstart', function( e ) {
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console.log('comp start');
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_this.onCompositionStart( e );
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} )
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.on( 'compositionend', function( e ) {
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console.log('comp end');
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_this.onCompositionEnd( e );
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} )
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.on('dragover drop', function( e ) {
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e.preventDefault();
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});
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// Initialization
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this.documentView.renderContent();
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this.poll = {
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interval: null,
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frequency: 75,
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node: null,
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prevText: null,
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prevHash: null,
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prevOffset: null,
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compositionStart: null,
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compositionEnd: null
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};
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};
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/* Methods */
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ve.es.Surface.prototype.onCutCopy = function( e ) {
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var _this = this,
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rangySel = rangy.getSelection(),
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key = rangySel.getRangeAt(0).toString().replace(/\s/gm,"");
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_this.clipboard[key] = ve.copyArray( _this.documentView.model.getData( _this.getSelection() ) );
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if ( event.type == 'cut' ) {
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setTimeout( function() {
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// we don't like how browsers cut, so let's undo it and do it ourselves.
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document.execCommand('undo', false, false);
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var selection = _this.getSelection(),
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node = rangy.getSelection().anchorNode;
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// transact
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var tx = _this.model.getDocument().prepareRemoval( selection );
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_this.model.transact( tx );
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// re-render
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_this.getLeafNode( node ).data( 'view' ).renderContent();
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// clear the prev information from poll object (probably a better way to do this)
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_this.poll.prevText = _this.poll.prevHash = _this.poll.prevOffset = _this.poll.node = null;
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// place cursor
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_this.showCursorAt( selection.start );
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}, 1 );
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}
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};
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ve.es.Surface.prototype.onPaste = function( e ) {
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var _this = this,
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insertionPoint = _this.getSelection().start,
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node = rangy.getSelection().anchorNode;
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$('#paste').html('').show().css( 'top', $(window).scrollTop() ).css(' left', $(window).scrollLeft() ).focus();
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setTimeout( function() {
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var key = $('#paste').hide().text().replace(/\s/gm,"");
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if ( _this.clipboard[key] ) {
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// transact
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var tx = _this.documentView.model.prepareInsertion( insertionPoint, _this.clipboard[key]);
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_this.model.transact( tx );
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// re-render
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_this.getLeafNode( node ).data( 'view' ).renderContent();
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// clear the prev information from poll object (probably a better way to do this)
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_this.poll.prevText = _this.poll.prevHash = _this.poll.prevOffset = _this.poll.node = null;
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// place cursor
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_this.showCursorAt( insertionPoint + _this.clipboard[key].length );
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} else {
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alert('i can only handle copy/paste from hybrid surface. sorry. :(');
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}
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}, 1 );
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};
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ve.es.Surface.prototype.onCompositionStart = function( e ) {
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this.stopPolling();
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var rangySel = rangy.getSelection();
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this.poll.compositionStart = this.getOffset( rangySel.anchorNode, rangySel.anchorOffset, false );
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};
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ve.es.Surface.prototype.onCompositionEnd = function( e ) {
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var rangySel = rangy.getSelection();
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this.poll.compositionEnd = this.getOffset( rangySel.focusNode, rangySel.focusOffset, false );
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this.startPolling();
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};
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ve.es.Surface.prototype.attachContextView = function( contextView ) {
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this.contextView = contextView;
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};
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ve.es.Surface.prototype.getModel = function() {
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return this.model;
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};
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ve.es.Surface.prototype.documentOnFocus = function() {
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this.startPolling();
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};
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ve.es.Surface.prototype.documentOnBlur = function() {
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this.stopPolling();
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};
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ve.es.Surface.prototype.startPolling = function() {
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if ( this.poll.interval === null ) {
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var _this = this;
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setTimeout( function() {
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_this.pollContent();
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}, 0);
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this.poll.interval = setInterval( function() {
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_this.pollContent();
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}, this.poll.frequency );
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}
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};
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ve.es.Surface.prototype.stopPolling = function() {
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if ( this.poll.interval !== null ) {
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clearInterval( this.poll.interval );
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this.poll.interval = null;
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}
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};
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ve.es.Surface.prototype.pollContent = function() {
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var localOffset, text, hash;
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if ( this.poll.compositionStart !== null && this.poll.compositionEnd !== null ) {
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text = ve.es.Surface.getDOMText2( this.poll.node );
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hash = ve.es.Surface.getDOMHash( this.poll.node );
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localOffset = this.poll.compositionEnd;
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this.poll.compositionStart = null;
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this.poll.compositionEnd = null;
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} else {
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var rangySel = rangy.getSelection();
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if ( rangySel.anchorNode === null ) {
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return;
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}
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var node = this.getLeafNode( rangySel.anchorNode )[0];
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text = ve.es.Surface.getDOMText2( node );
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hash = ve.es.Surface.getDOMHash( node );
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if ( rangySel.anchorNode !== rangySel.focusNode || rangySel.anchorOffset !== rangySel.focusOffset ) {
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localOffset = null;
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} else {
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localOffset = this.getOffset( rangySel.anchorNode, rangySel.anchorOffset, false );
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}
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if ( node !== this.poll.node ) {
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// TODO: Read content from old node one more time
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this.poll.node = node;
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this.poll.prevText = text;
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this.poll.prevHash = hash;
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this.poll.prevOffset = localOffset;
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return;
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}
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}
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var newData, annotations;
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if ( text !== this.poll.prevText ) {
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var nodeOffset = this.documentView.getOffsetFromNode( $( this.poll.node ).data( 'view' ) ),
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lengthDiff = text.length - this.poll.prevText.length,
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offsetDiff = ( localOffset !== null && this.poll.prevOffset !== null ) ? localOffset - this.poll.prevOffset : null;
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if ( lengthDiff === offsetDiff && this.poll.prevText.substring( 0, this.poll.prevOffset ) === text.substring( 0, this.poll.prevOffset ) ) {
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newData = text.substring( this.poll.prevOffset, localOffset ).split( '' );
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annotations = this.model.getDocument().getAnnotationsFromOffset( nodeOffset + 1 + this.poll.prevOffset - 1, true );
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ve.dm.DocumentNode.addAnnotationsToData( newData, annotations );
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this.model.transact( this.documentView.model.prepareInsertion(
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nodeOffset + 1 + this.poll.prevOffset,
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newData
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) );
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} else {
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var sameFromLeft = 0,
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sameFromRight = 0,
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l = text.length > this.poll.prevText.length ? this.poll.prevText.length : text.length;
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while ( sameFromLeft < l && this.poll.prevText[sameFromLeft] === text[sameFromLeft] ) {
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++sameFromLeft;
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}
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l = l - sameFromLeft;
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while ( sameFromRight < l && this.poll.prevText[this.poll.prevText.length - 1 - sameFromRight] === text[text.length - 1 - sameFromRight] ) {
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++sameFromRight;
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}
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annotations = this.model.getDocument().getAnnotationsFromOffset( nodeOffset + 1 + sameFromLeft, true );
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this.model.transact( this.documentView.model.prepareRemoval( new ve.Range(
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nodeOffset + 1 + sameFromLeft,
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nodeOffset + 1 + this.poll.prevText.length - sameFromRight
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) ) );
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newData = text.substring( sameFromLeft, text.length - sameFromRight ).split( '' );
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ve.dm.DocumentNode.addAnnotationsToData( newData, annotations );
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this.model.transact( this.documentView.model.prepareInsertion(
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nodeOffset + 1 + sameFromLeft,
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newData
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) );
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}
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this.poll.prevText = text;
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}
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if ( hash !== this.poll.prevHash ) {
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// TODO: redisplay cursor in correct position (with setTimeout)
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this.getLeafNode( this.poll.node ).data( 'view' ).renderContent();
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this.poll.prevHash = hash;
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}
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this.poll.prevOffset = localOffset;
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};
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ve.es.Surface.prototype.onMouseDown = function( e ) {
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if ( this.poll.interval !== null ) {
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this.stopPolling();
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this.pollContent();
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this.startPolling();
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}
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};
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ve.es.Surface.prototype.onKeyDown = function( e ) {
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if ( this.poll.interval !== null ) {
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this.stopPolling();
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this.pollContent();
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this.startPolling();
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}
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switch ( e.keyCode ) {
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// Enter
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case 13:
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this.handleEnter();
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e.preventDefault();
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break;
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// Backspace
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case 8:
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this.handleDelete( true );
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e.preventDefault();
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break;
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// Delete
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case 46:
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this.handleDelete( false );
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e.preventDefault();
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break;
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// Left arrow
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case 37:
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var rangySel = rangy.getSelection();
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if ( rangySel.anchorOffset === 0 ) {
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var globalOffset = this.getOffset( rangySel.anchorNode, rangySel.anchorOffset, true ),
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node = this.documentView.getNodeFromOffset( globalOffset ),
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nodeOffset = surfaceView.documentView.getOffsetFromNode( node );
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if ( nodeOffset + 1 === globalOffset ) {
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var newOffset = this.documentView.model.getRelativeContentOffset( globalOffset, -1 );
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this.showCursorAt(newOffset);
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e.preventDefault();
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}
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}
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break;
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// Right arrow
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case 39:
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var rangySel = rangy.getSelection();
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if ( rangySel.anchorOffset === rangySel.anchorNode.length ) {
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var globalOffset = this.getOffset( rangySel.anchorNode, rangySel.anchorOffset, true ),
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node = this.documentView.getNodeFromOffset( globalOffset ),
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nodeOffset = surfaceView.documentView.getOffsetFromNode( node );
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if ( nodeOffset + 1 + node.getContentLength() === globalOffset ) {
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var newOffset = this.documentView.model.getRelativeContentOffset( globalOffset, 1 );
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this.showCursorAt(newOffset);
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e.preventDefault();
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}
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}
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break;
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}
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var range = this.getSelection();
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if ( range.getLength() !== 0 ) {
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e.preventDefault();
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}
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};
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ve.es.Surface.prototype.getOffset = function( elem, offset, global ) {
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var $leafNode = this.getLeafNode( elem ),
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current = [$leafNode.contents(), 0],
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stack = [current],
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localOffset = 0;
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while ( stack.length > 0 ) {
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if ( current[1] >= current[0].length ) {
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stack.pop();
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current = stack[ stack.length - 1 ];
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continue;
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}
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var item = current[0][current[1]];
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var $item = current[0].eq( current[1] );
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if ( item.nodeType === 3 ) {
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if ( item === elem ) {
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localOffset += offset;
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break;
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} else {
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localOffset += item.textContent.length;
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}
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} else if ( item.nodeType === 1 ) {
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if ( $( item ).attr( 'contentEditable' ) === "false" ) {
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offset += 1;
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} else {
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if ( item === elem ) {
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localOffset += offset;
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break;
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}
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stack.push( [$item.contents(), 0] );
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current[1]++;
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current = stack[stack.length-1];
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continue;
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}
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}
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current[1]++;
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}
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if ( global === true ) {
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return this.documentView.getOffsetFromNode( $leafNode.data( 'view' ) ) + 1 + localOffset;
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} else {
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return localOffset;
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}
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};
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ve.es.Surface.prototype.showCursorAt = function( offset ) {
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var $node = this.documentView.getNodeFromOffset( offset ).$,
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current = [$node.contents(), 0],
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stack = [current],
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node,
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localOffset,
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index = this.documentView.getOffsetFromNode( $node.data('view') ) + 1;
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while ( stack.length > 0 ) {
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if ( current[1] >= current[0].length ) {
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stack.pop();
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current = stack[ stack.length - 1 ];
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continue;
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}
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var item = current[0][current[1]],
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$item = current[0].eq( current[1] );
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if ( item.nodeType === 3 ) {
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var length = item.textContent.length;
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if ( offset >= index && offset <= index + length ) {
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node = item;
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localOffset = offset - index;
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break;
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} else {
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index += length;
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}
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} else if ( item.nodeType === 1 ) {
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if ( $( item ).attr('contentEditable') === "false" ) {
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index += 1;
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} else {
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stack.push( [$item.contents(), 0] );
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current[1]++;
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current = stack[stack.length-1];
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continue;
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}
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}
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current[1]++;
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}
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var range = document.createRange();
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range.collapsed = true;
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range.setStart( node, localOffset );
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var sel = window.getSelection();
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sel.removeAllRanges();
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sel.addRange( range );
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};
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ve.es.Surface.prototype.getSelection = function() {
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var rangySel = rangy.getSelection(),
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range;
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if ( rangySel.anchorNode === rangySel.focusNode && rangySel.anchorOffset === rangySel.focusOffset ) {
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var offset = this.getOffset( rangySel.anchorNode, rangySel.anchorOffset, true );
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range = new ve.Range( offset, offset );
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} else {
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range = new ve.Range(
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this.getOffset( rangySel.anchorNode, rangySel.anchorOffset, true ),
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this.getOffset( rangySel.focusNode, rangySel.focusOffset, true )
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);
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}
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range.normalize();
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return range;
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};
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ve.es.Surface.prototype.getLeafNode = function( elem ) {
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var $node = $( elem );
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while( !$node.hasClass( 'ce-leafNode' ) ) {
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$node = $node.parent();
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}
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return $node;
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};
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ve.es.Surface.getDOMText2 = function( elem ) {
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// TODO: there must be some better way to write this regex replace
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var regex = new RegExp("[" + String.fromCharCode(32) + String.fromCharCode(160) + "]", "g");
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return ve.es.Surface.getDOMText( elem ).replace( regex, " " );
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};
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ve.es.Surface.getDOMText = function( elem ) {
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var nodeType = elem.nodeType,
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ret = '';
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if ( nodeType === 1 || nodeType === 9 ) {
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// Use textContent || innerText for elements
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if ( typeof elem.textContent === 'string' ) {
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return elem.textContent;
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} else if ( typeof elem.innerText === 'string' ) {
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// Replace IE's carriage returns
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return elem.innerText.replace( /\r\n/g, '' );
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} else {
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// Traverse it's children
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for ( elem = elem.firstChild; elem; elem = elem.nextSibling) {
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ret += ve.es.Surface.getDOMText( elem );
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}
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}
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} else if ( nodeType === 3 || nodeType === 4 ) {
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return elem.nodeValue;
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}
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return ret;
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};
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ve.es.Surface.getDOMHash = function( elem ) {
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var nodeType = elem.nodeType,
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nodeName = elem.nodeName,
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ret = '';
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if ( nodeType === 3 || nodeType === 4 ) {
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return '#';
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} else if ( nodeType === 1 || nodeType === 9 ) {
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ret += '<' + nodeName + '>';
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// Traverse it's children
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for ( elem = elem.firstChild; elem; elem = elem.nextSibling) {
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ret += ve.es.Surface.getDOMHash( elem );
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}
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ret += '</' + nodeName + '>';
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}
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return ret;
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};
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ve.es.Surface.prototype.handleDelete = function( backspace, isPartial ) {
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this.stopPolling();
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var selection = this.getSelection().clone(),
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sourceOffset,
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targetOffset,
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sourceSplitableNode,
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targetSplitableNode,
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tx,
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cursorAt;
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// this.resetText();
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if ( selection.from === selection.to ) {
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if ( backspace ) {
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sourceOffset = selection.to;
|
|
targetOffset = this.model.getDocument().getRelativeContentOffset(
|
|
sourceOffset,
|
|
-1
|
|
);
|
|
} else {
|
|
sourceOffset = this.model.getDocument().getRelativeContentOffset(
|
|
selection.to,
|
|
1
|
|
);
|
|
targetOffset = selection.to;
|
|
}
|
|
|
|
var sourceNode = this.documentView.getNodeFromOffset( sourceOffset, false ),
|
|
targetNode = this.documentView.getNodeFromOffset( targetOffset, false );
|
|
|
|
if ( sourceNode.model.getElementType() === targetNode.model.getElementType() ) {
|
|
sourceSplitableNode = ve.es.Node.getSplitableNode( sourceNode );
|
|
targetSplitableNode = ve.es.Node.getSplitableNode( targetNode );
|
|
}
|
|
|
|
cursorAt = targetOffset;
|
|
|
|
if ( sourceNode === targetNode ||
|
|
( typeof sourceSplitableNode !== 'undefined' &&
|
|
sourceSplitableNode.getParent() === targetSplitableNode.getParent() ) ) {
|
|
tx = this.model.getDocument().prepareRemoval(
|
|
new ve.Range( targetOffset, sourceOffset )
|
|
);
|
|
this.model.transact( tx );
|
|
} else {
|
|
tx = this.model.getDocument().prepareInsertion(
|
|
targetOffset, sourceNode.model.getContentData()
|
|
);
|
|
this.model.transact( tx );
|
|
|
|
var nodeToDelete = sourceNode;
|
|
ve.Node.traverseUpstream( nodeToDelete, function( node ) {
|
|
if ( node.getParent().children.length === 1 ) {
|
|
nodeToDelete = node.getParent();
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
} );
|
|
var range = new ve.Range();
|
|
range.from = this.documentView.getOffsetFromNode( nodeToDelete, false );
|
|
range.to = range.from + nodeToDelete.getElementLength();
|
|
tx = this.model.getDocument().prepareRemoval( range );
|
|
this.model.transact( tx );
|
|
}
|
|
} else {
|
|
// selection removal
|
|
tx = this.model.getDocument().prepareRemoval( selection );
|
|
this.model.transact( tx );
|
|
cursorAt = selection.start;
|
|
}
|
|
this.documentView.renderContent();
|
|
this.showCursorAt(cursorAt);
|
|
var _this = this;
|
|
setTimeout( function() {
|
|
_this.poll.prevText = _this.poll.prevHash = _this.poll.prevOffset = _this.poll.node = null;
|
|
_this.startPolling();
|
|
}, 0 );
|
|
|
|
};
|
|
|
|
ve.es.Surface.prototype.handleEnter = function() {
|
|
this.stopPolling();
|
|
var selection = this.getSelection().clone(),
|
|
tx;
|
|
if ( selection.from !== selection.to ) {
|
|
this.handleDelete( false, true );
|
|
}
|
|
var node = this.documentView.getNodeFromOffset( selection.to, false ),
|
|
nodeOffset = this.documentView.getOffsetFromNode( node, false );
|
|
|
|
if (
|
|
nodeOffset + node.getContentLength() + 1 === selection.to &&
|
|
node === ve.es.Node.getSplitableNode( node )
|
|
) {
|
|
tx = this.documentView.model.prepareInsertion(
|
|
nodeOffset + node.getElementLength(),
|
|
[ { 'type': 'paragraph' }, { 'type': '/paragraph' } ]
|
|
);
|
|
this.model.transact( tx );
|
|
selection.from = selection.to = nodeOffset + node.getElementLength() + 1;
|
|
} else {
|
|
var stack = [],
|
|
splitable = false;
|
|
|
|
ve.Node.traverseUpstream( node, function( node ) {
|
|
var elementType = node.model.getElementType();
|
|
if (
|
|
splitable === true &&
|
|
ve.es.DocumentNode.splitRules[ elementType ].children === true
|
|
) {
|
|
return false;
|
|
}
|
|
stack.splice(
|
|
stack.length / 2,
|
|
0,
|
|
{ 'type': '/' + elementType },
|
|
{
|
|
'type': elementType,
|
|
'attributes': ve.copyObject( node.model.element.attributes )
|
|
}
|
|
);
|
|
splitable = ve.es.DocumentNode.splitRules[ elementType ].self;
|
|
return true;
|
|
} );
|
|
tx = this.documentView.model.prepareInsertion( selection.to, stack );
|
|
this.model.transact( tx );
|
|
selection.from = selection.to =
|
|
this.model.getDocument().getRelativeContentOffset( selection.to, 1 );
|
|
}
|
|
this.documentView.renderContent();
|
|
this.showCursorAt(selection.to);
|
|
var _this = this;
|
|
setTimeout( function() {
|
|
_this.poll.prevText = _this.poll.prevHash = _this.poll.prevOffset = _this.poll.node = null;
|
|
_this.startPolling();
|
|
}, 0 );
|
|
};
|
|
|
|
/* Inheritance */
|
|
|
|
ve.extendClass( ve.es.Surface, ve.EventEmitter ); |