mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-26 15:21:51 +00:00
506 lines
14 KiB
JavaScript
506 lines
14 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( $container, model ) {
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// Inheritance
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ve.EventEmitter.call( this );
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// Properties
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this.model = model;
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this.documentView = new ve.ce.Document( model.getDocument() );
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this.contextView = new ve.ui.Context( this );
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this.$ = $container;
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this.clipboard = {};
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// Driven by mousedown and mouseup events
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this.isMouseDown = false;
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this.range = {
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anchorNode: null,
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anchorOffset: null,
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focusNode: null,
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focusOffset: null
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};
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// init rangy in case of Toshiba...
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rangy.init();
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// Events
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this.$.on( {
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'keypress': this.proxy( this.onKeyPress ),
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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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'dragover drop': function( e ) {
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// Prevent content drag & drop
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e.preventDefault();
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return false;
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}
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} );
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this.model.on( 'select', this.proxy( this.onSelect ) );
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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.onSelect = function( e ) {
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console.log("onSelect", e);
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};
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ve.ce.Surface.prototype.onKeyPress = function( e ) {
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console.log('onKeyPress');
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};
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ve.ce.Surface.prototype.onKeyDown = function( e ) {
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console.log('onKeyDown');
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// Prevent all interactions coming from keyboard when mouse is down (possibly selecting)
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if ( this.isMouseDown === true ) {
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e.preventDefault();
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return false;
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}
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switch ( e.keyCode ) {
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// Left arrow
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case 37:
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break;
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// Right arrow
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case 39:
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break;
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// Backspace
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case 8:
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tx = ve.dm.Transaction.newFromRemoval( this.documentView.model, this.model.getSelection() );
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ve.dm.TransactionProcessor.commit( this.documentView.model, tx );
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this.showCursor(this.model.getSelection().start);
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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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e.preventDefault();
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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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// TODO: Add special handling for clicking on images and alien nodes
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var $leaf = $( e.target ).closest( '.ve-ce-leafNode' );
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};
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ve.ce.Surface.prototype.onMouseUp = function( e ) {
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var handler = function() {
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var rangySel = rangy.getSelection();
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if ( rangySel.anchorNode === null && rangySel.focusNode === null ) {
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setTimeout( this.proxy( handler ), 100 );
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return;
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}
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if (
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rangySel.anchorNode !== this.range.anchorNode ||
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rangySel.anchorOffset !== this.range.anchorOffset ||
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rangySel.focusNode !== this.range.focusNode ||
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rangySel.focusOffset !== this.range.focusOffset
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) {
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if ( rangySel.isCollapsed ) {
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var offset = this.getOffset( rangySel.anchorNode, rangySel.anchorOffset );
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this.model.setSelection( new ve.Range( offset ) );
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} else {
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if ( !rangySel.isBackwards() ) {
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var offset1 = this.getOffset( rangySel.anchorNode, rangySel.anchorOffset ),
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offset2 = this.getOffset( rangySel.focusNode, rangySel.focusOffset );
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} else {
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var offset1 = this.getOffset( rangySel.focusNode, rangySel.focusOffset ),
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offset2 = this.getOffset( rangySel.anchorNode, rangySel.anchorOffset );
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}
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var offset1Fixed = this.getNearestCorrectOffset( offset1, 1 ),
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offset2Fixed = this.getNearestCorrectOffset( offset2, -1 );
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var range;
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if ( !rangySel.isBackwards() ) {
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range = new ve.Range( offset1Fixed, offset2Fixed );
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} else {
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range = new ve.Range( offset2Fixed, offset1Fixed );
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}
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this.model.setSelection( range );
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if ( offset1 !== offset1Fixed || offset2 !== offset2Fixed ) {
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this.showSelection( range );
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}
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}
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this.range.anchorNode = rangySel.anchorNode;
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this.range.anchorOffset = rangySel.anchorOffset;
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this.range.focusNode = rangySel.focusNode;
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this.range.focusOffset = rangySel.focusOffset;
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}
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this.isMouseDown = false;
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};
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setTimeout( this.proxy( handler ), 0 );
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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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* @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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$frag = null,
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key = '';
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// Create key from text and element names
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$frag = $(sel.getRangeAt(0).cloneContents());
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$frag.contents().each(function() {
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key += this.textContent || this.nodeName;
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});
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key = key.replace( /\s/gm, '' );
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// Set surface clipboard
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this.clipboard[key] = ve.copyArray(
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this.documentView.model.getData( this.model.getSelection() )
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);
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if ( e.type == 'cut' ) {
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setTimeout( function() {
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var selection = null,
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tx = null;
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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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selection = _this.model.getSelection();
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// Transact
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tx = ve.dm.Transaction.newFromRemoval( _this.documentView.model, selection );
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_this.model.transact( tx );
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// Place cursor
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_this.showCursor( selection.start );
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_this.model.setSelection( new ve.Range( 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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selection = this.model.getSelection(),
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tx = null;
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// Pasting into a range? Remove first.
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if (!rangy.getSelection().isCollapsed) {
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tx = ve.dm.Transaction.newFromRemoval( _this.documentView.model, selection );
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_this.model.transact( tx );
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}
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$('#paste').html('').show().focus();
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setTimeout( function() {
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var key = '',
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pasteData = null,
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tx = null;
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// Create key from text and element names
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$('#paste').hide().contents().each(function() {
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key += this.textContent || this.nodeName;
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});
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key = key.replace( /\s/gm, '' );
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// Get linear model from surface clipboard or create array from unknown pasted content
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pasteData = ( _this.clipboard[key] ) ? _this.clipboard[key] : $('#paste').text().split('');
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// Transact
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tx = ve.dm.Transaction.newFromInsertion(
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_this.documentView.model, selection.start, pasteData
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);
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_this.model.transact( tx );
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// Place cursor
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_this.showCursor( selection.start + pasteData.length );
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_this.model.setSelection( new ve.Range( selection.start + pasteData.length ) );
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_this.documentView.documentNode.$.focus();
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}, 1 );
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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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ve.ce.Surface.prototype.showSelection = function( range ) {
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var rangySel = rangy.getSelection(),
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rangyRange = rangy.createRange(),
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start,
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end;
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if ( range.start !== range.end ) {
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start = this.getNodeAndOffset( range.start );
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end = this.getNodeAndOffset( range.end ),
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rangyRange.setStart( start.node, start.offset );
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rangyRange.setEnd( end.node, end.offset );
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rangySel.setSingleRange( rangyRange, range.start !== range.from );
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} else {
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start = end = this.getNodeAndOffset( range.start );
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rangyRange.setStart( start.node, start.offset );
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rangySel.setSingleRange( rangyRange );
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}
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};
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// TODO: Find a better name and a better place for this method
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ve.ce.Surface.prototype.getNearestCorrectOffset = function( offset, direction ) {
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direction = direction > 0 ? 1 : -1;
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if ( ve.dm.Document.isContentOffset( this.documentView.model.data, offset ) || this.hasSlugAtOffset( offset ) ) {
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return offset;
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}
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var contentOffset = this.documentView.model.getNearestContentOffset( offset, direction ),
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structuralOffset = this.documentView.model.getNearestStructuralOffset( offset, direction, true );
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if ( !this.hasSlugAtOffset( structuralOffset ) ) {
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return contentOffset;
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}
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if ( direction === 1 ) {
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if ( contentOffset < offset ) {
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return structuralOffset;
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} else {
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return Math.min( contentOffset, structuralOffset );
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}
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} else {
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if ( contentOffset > offset ) {
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return structuralOffset;
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} else {
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return Math.max( contentOffset, structuralOffset );
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}
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}
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};
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// TODO: Find a better name and a better place for this method - probably in a document view?
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ve.ce.Surface.prototype.hasSlugAtOffset = function( offset ) {
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var node = this.documentView.documentNode.getNodeFromOffset( offset );
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if ( node.canHaveChildren() ) {
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return this.documentView.documentNode.getNodeFromOffset( offset ).hasSlugAtOffset( offset );
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} else {
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return false;
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}
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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.
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*
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* The results of this function are meant to be used 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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* @returns {Object} Object containing a node and offset property where node is an HTML element and
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* offset is the position within the element
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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 ) +
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( ( 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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};
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/**
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* Gets the linear offset based on a given DOM node and DOM offset
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*
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* @method
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* @param DOMnode {DOM Node} DOM node
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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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return this.getOffsetFromTextNode( DOMnode, DOMoffset );
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} else {
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return this.getOffsetFromElementNode( DOMnode, DOMoffset );
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}
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};
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ve.ce.Surface.prototype.getOffsetFromTextNode = function( DOMnode, DOMoffset ) {
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var $node = $( DOMnode ).closest( '.ve-ce-branchNode, .ve-ce-alienBlockNode, .ve-ce-alienInlineNode' ),
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nodeModel = $node.data( 'node' ).getModel();
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if ( ! $node.hasClass( 've-ce-branchNode' ) ) {
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return nodeModel.getOffset();
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}
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var current = [$node.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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return offset + nodeModel.getOffset() + ( nodeModel.isWrapped() ? 1 : 0 );
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};
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ve.ce.Surface.prototype.getOffsetFromElementNode = function( DOMnode, DOMoffset, addOuterLength ) {
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var $DOMnode = $( DOMnode ),
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nodeModel,
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node;
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if ( $DOMnode.hasClass( 've-ce-slug' ) ) {
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if ( $DOMnode.prev().length > 0 ) {
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nodeModel = $DOMnode.prev().data( 'node' ).getModel();
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return nodeModel.getOffset() + nodeModel.getOuterLength();
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}
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if ( $DOMnode.next().length > 0 ) {
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nodeModel = $DOMnode.next().data( 'node' ).getModel();
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return nodeModel.getOffset();
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}
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}
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if ( DOMoffset === 0 ) {
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node = $DOMnode.data( 'node' );
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if ( node ) {
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nodeModel = $DOMnode.data( 'node' ).getModel();
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if ( addOuterLength === true ) {
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return nodeModel.getOffset() + nodeModel.getOuterLength();
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} else {
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return nodeModel.getOffset();
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}
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} else {
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node = $DOMnode.contents().last()[0];
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}
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} else {
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node = $DOMnode.contents()[ DOMoffset - 1 ];
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}
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if ( node.nodeType === Node.TEXT_NODE ) {
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return this.getOffsetFromTextNode( node, node.length );
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} else {
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return this.getOffsetFromElementNode( node, 0, true );
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}
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};
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ve.ce.Surface.prototype.getModel = function() {
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return this.model;
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};
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/* Supplies the selection anchor coordinates to contextView */
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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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