mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-26 15:21:51 +00:00
402 lines
12 KiB
JavaScript
402 lines
12 KiB
JavaScript
/**
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* ContentEditable surface.
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*
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* @class
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* @constructor
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* @param model {ve.dm.Surface} Model to observe
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*/
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ve.ce.Surface = function( $container, model ) {
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// Inheritance
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ve.EventEmitter.call( this );
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// Properties
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this.model = model;
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this.documentView = new ve.ce.Document( model.getDocument() );
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this.contextView = new ve.ui.Context( this );
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this.$ = $container;
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this.isMouseDown = false;
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this.clipboard = {};
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// Events
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this.$.on( {
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'keydown': this.proxy( this.onKeyDown ),
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'mousedown': this.proxy( this.onMouseDown ),
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'mouseup': this.proxy( this.onMouseUp ),
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'mousemove': this.proxy( this.onMouseMove ),
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'cut copy': this.proxy( this.onCutCopy ),
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'beforepaste paste': this.proxy( this.onPaste ),
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} );
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// Initialization
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this.$.append( this.documentView.documentNode.$ );
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try {
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document.execCommand( "enableObjectResizing", false, false );
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document.execCommand( "enableInlineTableEditing", false, false );
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} catch (e) { }
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};
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/* Methods */
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ve.ce.Surface.prototype.proxy = function( func ) {
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var _this = this;
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return( function() {
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return func.apply( _this, arguments );
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});
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};
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ve.ce.Surface.prototype.onKeyDown = function( e ) {
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var rangySel = rangy.getSelection();
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var offset = this.getOffset( rangySel.anchorNode, rangySel.anchorOffset );
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console.log( 'onKeyDown', 'offset', offset );
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switch ( e.which ) {
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case 37: // left arrow key
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var relativeContentOffset = this.documentView.model.getRelativeContentOffset( offset, -1 );
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var relativeStructuralOffset = this.documentView.model.getRelativeStructuralOffset( offset - 1, -1, true );
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var relativeStructuralOffsetNode = this.documentView.documentNode.getNodeFromOffset( relativeStructuralOffset );
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var hasSlug = relativeStructuralOffsetNode.hasSlugAtOffset( relativeStructuralOffset );
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if ( hasSlug ) {
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if ( relativeContentOffset > offset ) {
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this.showCursor( relativeStructuralOffset );
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} else {
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this.showCursor( Math.max( relativeContentOffset, relativeStructuralOffset ) );
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}
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} else {
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this.showCursor( relativeContentOffset );
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}
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return false;
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break;
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case 39: // right arrow key
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var relativeContentOffset = this.documentView.model.getRelativeContentOffset( offset, 1 );
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var relativeStructuralOffset = this.documentView.model.getRelativeStructuralOffset( offset + 1, 1, true );
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var relativeStructuralOffsetNode = this.documentView.documentNode.getNodeFromOffset( relativeStructuralOffset );
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var hasSlug = relativeStructuralOffsetNode.hasSlugAtOffset( relativeStructuralOffset );
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if ( hasSlug ) {
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if ( relativeContentOffset < offset ) {
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this.showCursor( relativeStructuralOffset );
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} else {
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this.showCursor( Math.min( relativeContentOffset, relativeStructuralOffset ) );
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}
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} else {
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this.showCursor( relativeContentOffset );
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}
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return false;
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break;
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}
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};
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ve.ce.Surface.prototype.onMouseDown = function( e ) {
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this.isMouseDown = true;
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var _this = this;
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setTimeout( function() {
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var rangySel = rangy.getSelection();
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var offset = _this.getOffset( rangySel.anchorNode, rangySel.anchorOffset );
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console.log( 'onMouseDown', 'rangySel', rangySel.anchorNode, rangySel.anchorOffset );
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console.log( 'onMouseDown', 'offset', offset );
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}, 0 );
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var $closestLeaf = $( e.target ).closest( '.ve-ce-leafNode' );
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if ( $closestLeaf.length > 0 ) {
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console.log( 'onMouseDown', 'closest leaf of e.target', $closestLeaf );
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var closestLeafModel = $closestLeaf.data( 'node' ).getModel();
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var closestLeafOffset = closestLeafModel.getRoot().getOffsetFromNode( closestLeafModel );
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console.log( 'onMouseDown', 'closestLeafOffset', closestLeafOffset );
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var nearestContentOffset = this.documentView.model.getNearestContentOffset( closestLeafOffset, -1 );
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console.log( 'onMouseDown', 'nearestContentOffset', nearestContentOffset );
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var nearestStructuralOffset = this.documentView.model.getNearestStructuralOffset( closestLeafOffset, 0, true );
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console.log( 'onMouseDown', 'nearestStructuralOffset', nearestStructuralOffset );
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var nearestStructuralOffsetNode = this.documentView.documentNode.getNodeFromOffset( nearestStructuralOffset );
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console.log( 'onMouseDown', 'nearestStructuralOffsetNode', nearestStructuralOffsetNode );
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var hasSlug = nearestStructuralOffsetNode.hasSlugAtOffset( nearestStructuralOffset );
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console.log( 'onMouseDown', 'hasSlug', hasSlug );
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if ( hasSlug ) {
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if ( nearestContentOffset > closestLeafOffset ) {
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this.showCursor( nearestStructuralOffset );
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} else {
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this.showCursor( Math.max( nearestStructuralOffset, nearestContentOffset ) );
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}
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} else {
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this.showCursor( nearestContentOffset );
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}
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return false;
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}
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};
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ve.ce.Surface.prototype.onMouseUp = function( e ) {
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this.isMouseDown = false;
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};
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ve.ce.Surface.prototype.onMouseMove = function( e ) {
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if ( this.isMouseDown === true ) {
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//...
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}
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};
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/**
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* @method
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*/
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ve.ce.Surface.prototype.onCutCopy = function( e ) {
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var _this = this,
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sel = rangy.getSelection(),
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key = sel.getRangeAt(0).toString().replace( /\s/gm, '' );
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this.clipboard[key] = ve.copyArray(
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this.documentView.model.getData( this.getSelectionRange() )
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);
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if ( e.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.getSelectionRange();
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// transact
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var tx = _this.model.getDocument().prepareRemoval( selection );
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_this.autoRender = true;
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_this.model.transact( tx );
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_this.autoRender = false;
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_this.clearPollData();
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// place cursor
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_this.showCursor( selection.start );
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}, 1 );
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}
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};
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/**
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* @method
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*/
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ve.ce.Surface.prototype.onPaste = function( e ) {
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var _this = this,
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insertionPoint = _this.getSelectionRange().start;
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$('#paste').html('').show().focus();
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setTimeout( function() {
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var pasteString = $('#paste').hide().text(),
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key = pasteString.replace( /\s/gm, '' ),
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pasteData = ( _this.clipboard[key] ) ? _this.clipboard[key] : pasteString.split('');
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// transact
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var tx = ve.dm.Transaction.newFromInsertion( _this.documentView.model, insertionPoint, pasteData );
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ve.dm.TransactionProcessor.commit( _this.documentView.model, tx );
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// place cursor
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_this.showCursor( insertionPoint + pasteData.length );
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_this.documentView.documentNode.$.focus();
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}, 1 );
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};
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/**
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* Gets the linear offset based on a given DOM node (DOMnode) and offset (DOMoffset)
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*
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* @method
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* @param DOMnode {DOM Element} DOM Element
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* @param DOMoffset {Integer} DOM offset within the DOM Element
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* @returns {Integer} Linear model offset
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*/
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ve.ce.Surface.prototype.getOffset = function( DOMnode, DOMoffset ) {
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if ( DOMnode.nodeType === Node.TEXT_NODE ) {
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var $branch = $( DOMnode ).closest( '.ve-ce-branchNode' ),
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current = [$branch.contents(), 0],
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stack = [current],
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offset = 0,
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item,
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$item;
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while ( stack.length > 0 ) {
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if ( current[1] >= current[0].length ) {
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stack.pop();
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current = stack[ stack.length - 1 ];
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continue;
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}
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item = current[0][current[1]];
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if ( item.nodeType === Node.TEXT_NODE ) {
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if ( item === DOMnode ) {
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offset += DOMoffset;
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break;
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} else {
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offset += item.textContent.length;
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}
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} else if ( item.nodeType === Node.ELEMENT_NODE ) {
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$item = current[0].eq( current[1] );
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if ( $item.hasClass( 've-ce-slug' ) ) {
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if ( $item.contents()[0] === DOMnode ) {
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break;
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}
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} else if ( $item.hasClass( 've-ce-leafNode' ) ) {
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offset += 2;
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} else if ( $item.hasClass( 've-ce-branchNode' ) ) {
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offset += $item.data( 'node' ).getOuterLength();
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} else {
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stack.push( [$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 branchModel = $branch.data( 'node' ).getModel(),
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branchOffset = branchModel.getRoot().getOffsetFromNode( branchModel );
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return offset + branchOffset + ( ( branchModel.isWrapped() ) ? 1 : 0 );
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} else if ( DOMnode.nodeType === Node.ELEMENT_NODE ) {
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if ( DOMoffset === 0 ) {
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throw "Not implemented";
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} else {
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var $node = $( DOMnode ).contents().eq( DOMoffset - 1 ),
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nodeModel = $node.data( 'node' ).getModel(),
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nodeOffset = nodeModel.getRoot().getOffsetFromNode( nodeModel );
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return nodeOffset + nodeModel.getOuterLength();
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}
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}
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throw "Not implemented";
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};
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/**
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* Based on a given offset returns DOM node and offset that can be used to place a cursor (with rangy)
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*
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* @method
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* @param offset {Integer} Linear model offset
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*/
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ve.ce.Surface.prototype.getNodeAndOffset = function( offset ) {
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var node = this.documentView.getNodeFromOffset( offset ),
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startOffset = this.documentView.getDocumentNode().getOffsetFromNode( node ) + ( ( node.isWrapped() ) ? 1 : 0 ),
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current = [node.$.contents(), 0],
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stack = [current],
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item,
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$item,
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length;
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while ( stack.length > 0 ) {
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if ( current[1] >= current[0].length ) {
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stack.pop();
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current = stack[ stack.length - 1 ];
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continue;
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}
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item = current[0][current[1]];
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if ( item.nodeType === Node.TEXT_NODE ) {
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length = item.textContent.length;
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if ( offset >= startOffset && offset <= startOffset + length ) {
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return {
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node: item,
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offset: offset - startOffset
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};
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} else {
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startOffset += length;
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}
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} else if ( item.nodeType === Node.ELEMENT_NODE ) {
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$item = current[0].eq( current[1] );
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if ( $item.hasClass('ve-ce-slug') ) {
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if ( offset === startOffset ) {
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return {
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node: $item[0],
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offset: 1
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};
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}
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} else if ( $item.is( '.ve-ce-branchNode, .ve-ce-leafNode' ) ) {
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length = $item.data( 'node' ).model.getOuterLength();
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if ( offset >= startOffset && offset < startOffset + length ) {
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stack.push( [$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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} else {
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startOffset += length;
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}
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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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throw "Not implemented";
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};
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/**
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* Gets closest BranchNode (.ve-ce-branchNode) based on a given DOM node
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*
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* @method
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* @param elem {DOM Element} DOM Element
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* @returns {jQuery} jQuery element
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*/
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ve.ce.Surface.getBranchNode = function( elem ) {
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var $branch = $( elem ).closest( '.ve-ce-branchNode' );
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return $branch.length ? $branch : null;
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};
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/**
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* @method
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*/
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ve.ce.Surface.prototype.showCursor = function( offset ) {
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this.showSelection( new ve.Range( offset ) );
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};
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/**
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* @method
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*/
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ve.ce.Surface.prototype.showSelection = function( range ) {
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var start = this.getNodeAndOffset( range.start ),
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stop = this.getNodeAndOffset( range.end ),
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rangySel = rangy.getSelection(),
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rangyRange = rangy.createRange();
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rangyRange.setStart( start.node, start.offset );
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rangyRange.setEnd( stop.node, stop.offset );
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rangySel.setSingleRange( rangyRange, range.start !== range.from );
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};
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/**
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* @method
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* @returns {ve.Range} Current selection range
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*/
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ve.ce.Surface.prototype.getSelectionRange = function() {
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var rangySel = rangy.getSelection();
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if ( rangySel.isCollapsed ) {
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var offset = this.getOffset( rangySel.anchorNode, rangySel.anchorOffset, true );
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return new ve.Range( offset, offset );
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} else {
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return 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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};
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/**
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* @method
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*/
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ve.ce.Surface.prototype.getSelectionRect = function() {
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var rangySel = rangy.getSelection();
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return {
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start: rangySel.getStartDocumentPos(),
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end: rangySel.getEndDocumentPos()
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};
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};
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/* Inheritance */
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ve.extendClass( ve.ce.Surface, ve.EventEmitter );
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