mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-09-26 19:56:49 +00:00
a564f81aa7
* "onevar" warning sometimes solved by just merging var statements other times solved by making it a function declaration instead of a function expression. * Also fixed several '_this' variable names in ve.es.Surface to more descriptive names, and enabled warnings for dangling _ in identifiers. Change-Id: I7d411881e3e06cf9a7fe56d689c29375881a81de
1139 lines
31 KiB
JavaScript
1139 lines
31 KiB
JavaScript
/*global rangy */
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/**
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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( $container, model ) {
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// Inheritance
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ve.EventEmitter.call( this );
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// Properties
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this.model = model;
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this.documentView = null; // See initialization below
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this.contextView = null; // See initialization below
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this.selectionTimeout = null;
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this.$ = $container;
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this.$document = $( document );
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this.clipboard = {};
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this.render = true; // Used in ve.ce.TextNode
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this.sluggable = true;
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this.poll = {
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text: null,
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hash: null,
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node: null,
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range: null,
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rangySelection: {
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anchorNode: null,
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anchorOffset: null,
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focusNode: null,
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focusOffset: null
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},
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polling: false,
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timeout: null,
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frequency: 100
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};
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// Events
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this.model.on( 'change', ve.proxy( this.onChange, this ) );
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this.on( 'contentChange', ve.proxy( this.onContentChange, this ) );
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this.$.on( {
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'cut copy': ve.proxy( this.onCutCopy, this ),
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'paste': ve.proxy( this.onPaste, this ),
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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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if ( $.browser.msie ) {
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this.$.on( 'beforepaste', ve.proxy( this.onPaste, this ) );
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}
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// Initialization
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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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// Silently ignore
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}
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rangy.init();
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// Must be initialized after select and transact listeners are added to model so respond first
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this.documentView = new ve.ce.Document( model.getDocument(), this );
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this.contextView = new ve.ui.Context( this );
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this.$.append( this.documentView.getDocumentNode().$ );
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// DocumentNode Events
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this.documentView.getDocumentNode().$.on( {
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'focus': ve.proxy( this.documentOnFocus, this ),
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'blur': ve.proxy( this.documentOnBlur, this )
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} );
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};
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/* Methods */
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ve.ce.Surface.prototype.documentOnFocus = function() {
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ve.log( 'documentOnFocus' );
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this.$document.off( '.ve-ce-Surface' );
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this.$document.on( {
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// key down
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'keydown.ve-ce-Surface': ve.proxy( this.onKeyDown, this ),
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'keypress.ve-ce-Surface': ve.proxy( this.onKeyPress, this ),
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// mouse down
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'mousedown.ve-ce-Surface': ve.proxy( this.onMouseDown, this )
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} );
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this.startPolling( true );
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};
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ve.ce.Surface.prototype.documentOnBlur = function() {
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ve.log( 'documentOnBlur' );
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this.$document.off( '.ve-ce-Surface' );
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this.stopPolling();
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};
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ve.ce.Surface.prototype.onMouseDown = function( e ) {
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ve.log( 'onMouseDown' );
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if ( this.poll.polling === true ) {
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this.pollChanges();
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if ( $( e.target ).closest( '.ve-ce-documentNode' ).length === 0 ) {
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this.stopPolling();
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} else {
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this.pollChanges( true );
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}
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}
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// Block / prevent triple click
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if ( e.originalEvent.detail > 2 ) {
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e.preventDefault();
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}
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};
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ve.ce.Surface.prototype.onKeyDown = function( e ) {
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var offset,
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relativeContentOffset,
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relativeStructuralOffset,
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relativeStructuralOffsetNode,
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hasSlug,
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newOffset,
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annotations,
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annotation;
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switch ( e.keyCode ) {
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// Indenting list items doesn't work yet, so disable tab handling for now
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/*
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// Tab Key
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case 9:
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e.preventDefault();
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// FIXME check if indentation is even possible here, insert literal tab otherwise
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ve.ui.IndentationButtonTool.changeListLevel( this.model , 'in' );
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break;
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// Shift + Tab Key
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case 16:
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e.preventDefault();
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// FIXME check if indentation is even possible here
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ve.ui.IndentationButtonTool.changeListLevel( this.model , 'out' );
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break;
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*/
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// Left arrow
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case 37:
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if ( !e.metaKey && !e.altKey && !e.shiftKey && this.model.getSelection().getLength() === 0 ) {
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offset = this.model.getSelection().start;
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relativeContentOffset = this.documentView.model.getRelativeContentOffset( offset, -1 );
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relativeStructuralOffset = this.documentView.model.getRelativeStructuralOffset( offset - 1, -1, true );
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relativeStructuralOffsetNode = this.documentView.documentNode.getNodeFromOffset( relativeStructuralOffset );
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hasSlug = relativeStructuralOffsetNode.hasSlugAtOffset( relativeStructuralOffset );
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if ( hasSlug ) {
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if ( relativeContentOffset > offset ) {
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newOffset = relativeStructuralOffset;
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} else {
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newOffset = Math.max( relativeContentOffset, relativeStructuralOffset );
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}
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} else {
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newOffset = Math.min( offset, relativeContentOffset );
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}
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this.model.change(
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null,
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new ve.Range( newOffset )
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);
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e.preventDefault();
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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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if (
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!e.metaKey &&
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!e.altKey &&
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!e.shiftKey &&
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this.model.getSelection().getLength() === 0
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) {
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offset = this.model.getSelection().start;
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relativeContentOffset = this.documentView.model.getRelativeContentOffset( offset, 1 );
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relativeStructuralOffset = this.documentView.model.getRelativeStructuralOffset( offset + 1, 1, true );
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relativeStructuralOffsetNode = this.documentView.documentNode.getNodeFromOffset( relativeStructuralOffset );
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hasSlug = relativeStructuralOffsetNode.hasSlugAtOffset( relativeStructuralOffset );
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if ( hasSlug ) {
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if ( relativeContentOffset < offset ) {
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newOffset = relativeStructuralOffset;
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} else {
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newOffset = Math.min( relativeContentOffset, relativeStructuralOffset );
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}
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} else {
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newOffset = Math.max( offset, relativeContentOffset );
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}
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this.model.change(
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null,
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new ve.Range( newOffset )
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);
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e.preventDefault();
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}
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break;
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// Enter
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case 13:
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e.preventDefault();
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this.handleEnter( e );
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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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// B
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case 66:
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if ( ve.ce.Surface.isShortcutKey( e ) ) {
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// Ctrl+B / Cmd+B, annotate with bold
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e.preventDefault();
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annotations = this.documentView.model.getAnnotationsFromRange( this.model.getSelection() );
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annotation = { 'type': 'textStyle/bold' };
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this.model.annotate( annotations[ve.getHash(annotation)] ? 'clear' : 'set', annotation );
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}
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break;
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// I
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case 73:
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if ( ve.ce.Surface.isShortcutKey( e ) ) {
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// Ctrl+I / Cmd+I, annotate with italic
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e.preventDefault();
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annotations = this.documentView.model.getAnnotationsFromRange( this.model.getSelection() );
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annotation = { 'type': 'textStyle/italic' };
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this.model.annotate( annotations[ve.getHash(annotation)] ? 'clear' : 'set', annotation );
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}
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break;
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// K
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case 75:
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if ( ve.ce.Surface.isShortcutKey( e ) ) {
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if ( this.model.getSelection() && this.model.getSelection().getLength() ) {
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e.preventDefault();
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this.contextView.openInspector( 'link' );
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}
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}
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break;
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// Z
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case 90:
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if ( ve.ce.Surface.isShortcutKey( e ) ) {
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if ( e.shiftKey ) {
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// Ctrl+Shift+Z / Cmd+Shift+Z, redo
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e.preventDefault();
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this.stopPolling();
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this.showSelection( this.model.redo() );
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this.clearPollData();
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this.startPolling();
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} else {
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// Ctrl+Z / Cmd+Z, undo
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e.preventDefault();
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this.stopPolling();
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this.showSelection( this.model.undo() );
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this.clearPollData();
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this.startPolling();
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}
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}
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break;
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default:
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if ( this.poll.polling === false ) {
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this.poll.polling = true;
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this.pollChanges();
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}
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}
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};
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ve.ce.Surface.prototype.onCutCopy = function( e ) {
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var view = this,
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sel = rangy.getSelection(),
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$frag = null,
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key = '';
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this.stopPolling();
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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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this.stopPolling();
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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 = view.model.getSelection();
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// Transact
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view.autoRender = true;
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tx = ve.dm.Transaction.newFromRemoval( view.documentView.model, selection );
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view.model.change( tx, new ve.Range( selection.start ) );
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view.autoRender = false;
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view.clearPollData();
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view.startPolling();
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}, 1 );
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}
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};
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ve.ce.Surface.prototype.onPaste = function( e ) {
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var view = this,
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selection = this.model.getSelection(),
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tx = null;
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this.stopPolling();
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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( view.documentView.model, selection );
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view.model.change( 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 = ( view.clipboard[key] ) ? view.clipboard[key] : $('#paste').text().split('');
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// Transact
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tx = ve.dm.Transaction.newFromInsertion(
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view.documentView.model, selection.start, pasteData
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);
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view.model.change( tx, new ve.Range( selection.start + pasteData.length ) );
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view.documentView.documentNode.$.focus();
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view.clearPollData();
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view.startPolling();
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}, 1 );
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};
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ve.ce.Surface.prototype.onKeyPress = function( e ) {
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var node, selection, data;
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ve.log('onKeyPress');
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if ( ve.ce.Surface.isShortcutKey( e ) || e.which === 13 ) {
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return;
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}
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selection = this.model.getSelection();
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if (
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selection.getLength() === 0 &&
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this.sluggable === true &&
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this.hasSlugAtOffset( selection.start )
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) {
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this.sluggable = false;
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this.stopPolling();
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if ( this.documentView.getNodeFromOffset( selection.start ).getLength() !== 0 ) {
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data = [ { 'type' : 'paragraph' }, { 'type' : '/paragraph' } ];
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this.model.change(
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ve.dm.Transaction.newFromInsertion(
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this.documentView.model,
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selection.start,
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data
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),
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new ve.Range( selection.start + 1 )
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);
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node = this.documentView.getNodeFromOffset( selection.start + 1 );
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} else {
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node = this.documentView.getNodeFromOffset( selection.start );
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}
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node.$.empty();
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node.$.append( document.createTextNode('') );
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this.clearPollData();
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this.startPolling();
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}
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if ( selection.getLength() > 0 && e.which !== 0 ) {
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this.stopPolling();
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this.model.change(
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ve.dm.Transaction.newFromRemoval(
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this.documentView.model,
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selection
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),
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new ve.Range( selection.start )
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);
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this.clearPollData();
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this.startPolling();
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}
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};
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ve.ce.Surface.prototype.startPolling = function( async ) {
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ve.log( 'startPolling' );
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this.poll.polling = true;
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this.pollChanges( async );
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};
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ve.ce.Surface.prototype.stopPolling = function() {
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ve.log( 'stopPolling' );
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this.poll.polling = false;
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clearTimeout( this.poll.timeout );
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};
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ve.ce.Surface.prototype.clearPollData = function() {
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ve.log( 'clearPollData' );
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this.poll.text = null;
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this.poll.hash = null;
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this.poll.node = null;
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this.poll.rangySelection.anchorNode = null;
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this.poll.rangySelection.anchorOffset = null;
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this.poll.rangySelection.focusNode = null;
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this.poll.rangySelection.focusOffset = null;
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};
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ve.ce.Surface.prototype.pollChanges = function( async ) {
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var delay, node, range, rangySelection,
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$anchorNode, $focusNode,
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text, hash;
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delay = ve.proxy( function( async ) {
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if ( this.poll.polling ) {
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if ( this.poll.timeout !== null ) {
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clearTimeout( this.poll.timeout );
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}
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this.poll.timeout = setTimeout(
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ve.proxy( this.pollChanges, this ), async ? 0 : this.poll.frequency
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);
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}
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}, this );
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if ( async ) {
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delay( true );
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return;
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}
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node = this.poll.node;
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range = this.poll.range;
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rangySelection = rangy.getSelection();
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if (
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rangySelection.anchorNode !== this.poll.rangySelection.anchorNode ||
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rangySelection.anchorOffset !== this.poll.rangySelection.anchorOffset ||
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rangySelection.focusNode !== this.poll.rangySelection.focusNode ||
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rangySelection.focusOffset !== this.poll.rangySelection.focusOffset
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) {
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this.poll.rangySelection.anchorNode = rangySelection.anchorNode;
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this.poll.rangySelection.anchorOffset = rangySelection.anchorOffset;
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this.poll.rangySelection.focusNode = rangySelection.focusNode;
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this.poll.rangySelection.focusOffset = rangySelection.focusOffset;
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// TODO: Optimize for the case of collapsed (rangySelection.isCollapsed) range
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$anchorNode = $( rangySelection.anchorNode ).closest( '.ve-ce-branchNode' );
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$focusNode = $( rangySelection.focusNode ).closest( '.ve-ce-branchNode' );
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if ( $anchorNode[0] === $focusNode[0] ) {
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node = $anchorNode[0];
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} else {
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node = null;
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}
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// TODO: Do we really need to figure out range even if node is null? (YES)
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range = new ve.Range(
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this.getOffset( rangySelection.anchorNode, rangySelection.anchorOffset ),
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this.getOffset( rangySelection.focusNode, rangySelection.focusOffset )
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);
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}
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// TODO: Invastigate more when and why node is null and what to do in those cases
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if ( this.poll.node !== node ) {
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if ( node === null ) {
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this.poll.text = this.poll.hash = this.poll.node = null;
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} else {
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this.poll.text = ve.ce.getDomText( node );
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this.poll.hash = ve.ce.getDomHash( node );
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this.poll.node = node;
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}
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} else {
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if ( node !== null ) {
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text = ve.ce.getDomText( node );
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hash = ve.ce.getDomHash( node );
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if ( this.poll.text !== text || this.poll.hash !== hash ) {
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this.emit( 'contentChange', {
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'node': node,
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'old': {
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'text': this.poll.text,
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'hash': this.poll.hash,
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'range': this.poll.range
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},
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'new': {
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'text': text,
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'hash': hash,
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'range': range
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}
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} );
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this.poll.text = text;
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this.poll.hash = hash;
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}
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}
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}
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if ( this.poll.range !== range ) {
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// TODO: Fix range
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if ( range.getLength() === 0 ) {
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range = new ve.Range( this.getNearestCorrectOffset( range.start, 1 ) );
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}
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this.model.change( null, range );
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this.poll.range = range;
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}
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delay();
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};
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ve.ce.Surface.prototype.onContentChange = function( e ) {
|
|
var nodeOffset = $( e.node ).data( 'node' ).model.getOffset(),
|
|
offsetDiff = (
|
|
e.old.range !== null &&
|
|
e['new'].range !== null &&
|
|
e.old.range.getLength() === 0 &&
|
|
e['new'].range.getLength() === 0
|
|
) ? e['new'].range.start - e.old.range.start : null,
|
|
lengthDiff = e['new'].text.length - e.old.text.length,
|
|
data,
|
|
annotations;
|
|
|
|
if (
|
|
offsetDiff === lengthDiff &&
|
|
e.old.text.substring( 0, e.old.range.start - nodeOffset - 1 ) ===
|
|
e['new'].text.substring( 0, e.old.range.start - nodeOffset - 1 )
|
|
) {
|
|
data = e['new'].text.substring(
|
|
e.old.range.start - nodeOffset - 1,
|
|
e['new'].range.start - nodeOffset - 1
|
|
).split( '' );
|
|
annotations = this.model.getDocument().getAnnotationsFromOffset( e.old.range.start - 1 );
|
|
|
|
if ( !ve.isEmptyObject( annotations ) ) {
|
|
ve.dm.Document.addAnnotationsToData( data, annotations );
|
|
}
|
|
|
|
this.render = false;
|
|
this.model.change(
|
|
ve.dm.Transaction.newFromInsertion( this.documentView.model, e.old.range.start, data ),
|
|
e['new'].range
|
|
);
|
|
this.render = true;
|
|
|
|
} else {
|
|
var fromLeft = 0,
|
|
fromRight = 0,
|
|
len = Math.min( e.old.text.length, e['new'].text.length );
|
|
|
|
while ( fromLeft < len && e.old.text[fromLeft] === e['new'].text[fromLeft] ) {
|
|
++fromLeft;
|
|
}
|
|
while (
|
|
fromRight < len - fromLeft &&
|
|
e.old.text[e.old.text.length - 1 - fromRight] ===
|
|
e['new'].text[e['new'].text.length - 1 - fromRight]
|
|
) {
|
|
++fromRight;
|
|
}
|
|
|
|
annotations = this.model.getDocument().getAnnotationsFromOffset( nodeOffset + 1 + fromLeft );
|
|
data = e['new'].text.substring( fromLeft, e['new'].text.length - fromRight ).split( '' );
|
|
|
|
if ( !ve.isEmptyObject( annotations ) ) {
|
|
ve.dm.Document.addAnnotationsToData( data, annotations );
|
|
}
|
|
|
|
this.clearPollData();
|
|
|
|
// TODO: combine newFromRemoval and newFromInsertion into one newFromReplacement
|
|
if ( fromLeft + fromRight < e.old.text.length ) {
|
|
this.model.change(
|
|
ve.dm.Transaction.newFromRemoval(
|
|
this.documentView.model,
|
|
new ve.Range( nodeOffset + 1 + fromLeft, nodeOffset + 1 + e.old.text.length - fromRight )
|
|
),
|
|
e['new'].range
|
|
);
|
|
}
|
|
this.model.change(
|
|
ve.dm.Transaction.newFromInsertion( this.documentView.model, nodeOffset + 1 + fromLeft, data ),
|
|
e['new'].range
|
|
);
|
|
}
|
|
this.sluggable = true;
|
|
};
|
|
|
|
ve.ce.Surface.prototype.onChange = function( transaction, selection ) {
|
|
ve.log( 'onChange' );
|
|
|
|
if ( selection ) {
|
|
this.showSelection( selection );
|
|
|
|
// Responsible for Debouncing the ContextView Icon until select events are finished being fired.
|
|
// TODO: Use ve.debounce method to abstract usage of setTimeout
|
|
clearTimeout( this.selectionTimeout );
|
|
this.selectionTimeout = setTimeout(
|
|
ve.proxy( function() {
|
|
if ( this.contextView ) {
|
|
if ( selection.getLength() > 0 ) {
|
|
this.contextView.set();
|
|
} else {
|
|
this.contextView.clear();
|
|
}
|
|
}
|
|
}, this ),
|
|
250
|
|
);
|
|
}
|
|
};
|
|
|
|
ve.ce.Surface.prototype.handleEnter = function( e ) {
|
|
var selection = this.model.getSelection(),
|
|
documentModel = this.model.getDocument(),
|
|
emptyParagraph = [{ 'type': 'paragraph' }, { 'type': '/paragraph' }],
|
|
tx,
|
|
advanceCursor = true,
|
|
outerParent,
|
|
outerChildrenCount;
|
|
|
|
// Stop polling while we work
|
|
this.stopPolling();
|
|
|
|
// Handle removal first
|
|
if ( selection.from !== selection.to ) {
|
|
tx = ve.dm.Transaction.newFromRemoval( documentModel, selection );
|
|
selection = tx.translateRange( selection );
|
|
this.model.change( tx, selection );
|
|
}
|
|
// Handle insertion
|
|
var node = this.documentView.getNodeFromOffset( selection.from ),
|
|
nodeModel = node.getModel(),
|
|
cursor = selection.from,
|
|
nodeOffset = nodeModel.getOffset(),
|
|
contentBranchModel = nodeModel.isContent() ? nodeModel.getParent() : nodeModel,
|
|
contentBranchModelRange = contentBranchModel.getRange();
|
|
|
|
if (
|
|
contentBranchModel.getType() !== 'paragraph' &&
|
|
(
|
|
cursor === contentBranchModelRange.from ||
|
|
cursor === contentBranchModelRange.to
|
|
)
|
|
) {
|
|
// If we're at the start/end of something that's not a paragraph, insert a paragraph
|
|
// before/after
|
|
if ( cursor === contentBranchModelRange.from ) {
|
|
tx = ve.dm.Transaction.newFromInsertion(
|
|
documentModel, contentBranchModel.getOuterRange().from, emptyParagraph
|
|
);
|
|
} else if ( cursor === contentBranchModelRange.to ) {
|
|
tx = ve.dm.Transaction.newFromInsertion(
|
|
documentModel, contentBranchModel.getOuterRange().to, emptyParagraph
|
|
);
|
|
}
|
|
} else {
|
|
// Split
|
|
var stack = [],
|
|
outermostNode = null;
|
|
|
|
ve.Node.traverseUpstream( node, function( node ) {
|
|
if ( !node.canBeSplit() ) {
|
|
return false;
|
|
}
|
|
stack.splice(
|
|
stack.length / 2,
|
|
0,
|
|
{ 'type': '/' + node.type },
|
|
node.model.getClonedElement()
|
|
);
|
|
outermostNode = node;
|
|
if ( e.shiftKey ) {
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
} );
|
|
|
|
outerParent = outermostNode.getModel().getParent();
|
|
outerChildrenCount = outerParent.getChildren().length;
|
|
|
|
if (
|
|
outermostNode.type === 'listItem' && // this is a list item
|
|
outerParent.getChildren()[outerChildrenCount - 1] === outermostNode.getModel() && // this is the last list item
|
|
outermostNode.children.length === 1 && // there is one child
|
|
node.model.length === 0 // the child is empty
|
|
) {
|
|
// Enter was pressed in an empty list item.
|
|
var list = outermostNode.getModel().getParent();
|
|
// Remove the list item
|
|
tx = ve.dm.Transaction.newFromRemoval( documentModel, outermostNode.getModel().getOuterRange() );
|
|
this.model.change( tx );
|
|
// Insert a paragraph
|
|
tx = ve.dm.Transaction.newFromInsertion( documentModel, list.getOuterRange().to, emptyParagraph );
|
|
|
|
advanceCursor = false;
|
|
} else {
|
|
// We must process the transaction first because getRelativeContentOffset can't help us yet
|
|
tx = ve.dm.Transaction.newFromInsertion( documentModel, selection.from, stack );
|
|
}
|
|
}
|
|
this.model.change( tx );
|
|
|
|
// Now we can move the cursor forward
|
|
if ( advanceCursor ) {
|
|
this.model.change(
|
|
null, new ve.Range( documentModel.getRelativeContentOffset( selection.from, 1 ) )
|
|
);
|
|
} else {
|
|
this.model.change(
|
|
null, new ve.Range( documentModel.getNearestContentOffset( selection.from ) )
|
|
);
|
|
}
|
|
// Reset and resume polling
|
|
this.clearPollData();
|
|
this.startPolling();
|
|
};
|
|
|
|
ve.ce.Surface.prototype.handleDelete = function( backspace ) {
|
|
this.stopPolling();
|
|
|
|
var selection = this.model.getSelection(),
|
|
sourceOffset,
|
|
targetOffset,
|
|
sourceSplitableNode,
|
|
targetSplitableNode,
|
|
tx,
|
|
cursorAt,
|
|
sourceNode,
|
|
targetNode,
|
|
sourceData,
|
|
nodeToDelete;
|
|
|
|
if ( selection.from === selection.to ) {
|
|
if ( backspace || selection.to === this.model.getDocument().data.length - 1) {
|
|
sourceOffset = selection.to;
|
|
targetOffset = this.getNearestCorrectOffset( sourceOffset - 1, -1 );
|
|
} else {
|
|
sourceOffset = this.model.getDocument().getRelativeContentOffset( selection.to, 1 );
|
|
targetOffset = selection.to;
|
|
}
|
|
|
|
sourceNode = this.documentView.getNodeFromOffset( sourceOffset, false );
|
|
targetNode = this.documentView.getNodeFromOffset( targetOffset, false );
|
|
|
|
if ( sourceNode.type === targetNode.type ) {
|
|
sourceSplitableNode = ve.ce.Node.getSplitableNode( sourceNode );
|
|
targetSplitableNode = ve.ce.Node.getSplitableNode( targetNode );
|
|
}
|
|
|
|
cursorAt = targetOffset;
|
|
|
|
if (
|
|
// Source and target are the same node
|
|
sourceNode === targetNode ||
|
|
(
|
|
// Source and target have the same parent (list items)
|
|
sourceSplitableNode !== undefined &&
|
|
sourceSplitableNode.getParent() === targetSplitableNode.getParent()
|
|
)
|
|
) {
|
|
// Simple removal
|
|
tx = ve.dm.Transaction.newFromRemoval(
|
|
this.documentView.model, new ve.Range( targetOffset, sourceOffset )
|
|
);
|
|
this.model.change( tx, new ve.Range( cursorAt ) );
|
|
} else if ( sourceNode.getType() === 'document' ) {
|
|
// Source is a slug - move the cursor somewhere useful
|
|
this.model.change( null, new ve.Range( cursorAt ) );
|
|
} else {
|
|
// Source and target are different nodes and do not share a parent, perform tricky merge
|
|
// Get the data for the source node
|
|
sourceData = this.documentView.model.getData( sourceNode.model.getRange() );
|
|
// Find the node that should be completely removed
|
|
nodeToDelete = sourceNode;
|
|
ve.Node.traverseUpstream( nodeToDelete, function( node ) {
|
|
if ( node.getParent().children.length === 1 ) {
|
|
nodeToDelete = node.getParent();
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
} );
|
|
// Remove source node or source node ancestor
|
|
this.model.change( ve.dm.Transaction.newFromRemoval(
|
|
this.documentView.model, nodeToDelete.getModel().getOuterRange()
|
|
) );
|
|
// Append source data to target
|
|
this.model.change(
|
|
ve.dm.Transaction.newFromInsertion(
|
|
this.documentView.model, targetOffset, sourceData
|
|
),
|
|
new ve.Range( cursorAt )
|
|
);
|
|
}
|
|
} else {
|
|
// Selection removal
|
|
this.model.change(
|
|
ve.dm.Transaction.newFromRemoval( this.documentView.model, selection ),
|
|
new ve.Range( selection.start )
|
|
);
|
|
}
|
|
|
|
this.clearPollData();
|
|
this.startPolling();
|
|
};
|
|
|
|
ve.ce.Surface.prototype.showCursor = function( offset ) {
|
|
this.showSelection( new ve.Range( offset ) );
|
|
};
|
|
|
|
ve.ce.Surface.prototype.showSelection = function( range ) {
|
|
var rangySel = rangy.getSelection(),
|
|
rangyRange = rangy.createRange(),
|
|
start,
|
|
end;
|
|
|
|
if ( range.start !== range.end ) {
|
|
start = this.getNodeAndOffset( range.start );
|
|
end = this.getNodeAndOffset( range.end );
|
|
|
|
if ( $.browser.msie ) {
|
|
if ( range.start === range.from ) {
|
|
if (
|
|
start.node === this.poll.rangySelection.anchorNode &&
|
|
start.offset === this.poll.rangySelection.anchorOffset &&
|
|
end.node === this.poll.rangySelection.focusNode &&
|
|
end.offset === this.poll.rangySelection.focusOffset
|
|
) {
|
|
return;
|
|
}
|
|
} else {
|
|
if (
|
|
end.node === this.poll.rangySelection.anchorNode &&
|
|
end.offset === this.poll.rangySelection.anchorOffset &&
|
|
start.node === this.poll.rangySelection.focusNode &&
|
|
start.offset === this.poll.rangySelection.focusOffset
|
|
) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
rangyRange.setStart( start.node, start.offset );
|
|
rangyRange.setEnd( end.node, end.offset );
|
|
rangySel.removeAllRanges();
|
|
rangySel.addRange( rangyRange, range.start !== range.from );
|
|
} else {
|
|
start = end = this.getNodeAndOffset( range.start );
|
|
|
|
if ( $.browser.msie ) {
|
|
if (
|
|
start.node === this.poll.rangySelection.anchorNode &&
|
|
start.offset === this.poll.rangySelection.anchorOffset
|
|
) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
rangyRange.setStart( start.node, start.offset );
|
|
rangySel.setSingleRange( rangyRange );
|
|
}
|
|
};
|
|
|
|
// TODO: Find a better name and a better place for this method
|
|
ve.ce.Surface.prototype.getNearestCorrectOffset = function( offset, direction ) {
|
|
direction = direction > 0 ? 1 : -1;
|
|
|
|
if (
|
|
ve.dm.Document.isContentOffset( this.documentView.model.data, offset ) ||
|
|
this.hasSlugAtOffset( offset )
|
|
) {
|
|
return offset;
|
|
}
|
|
|
|
var contentOffset = this.documentView.model.getNearestContentOffset( offset, direction ),
|
|
structuralOffset =
|
|
this.documentView.model.getNearestStructuralOffset( offset, direction, true );
|
|
|
|
if ( !this.hasSlugAtOffset( structuralOffset ) ) {
|
|
return contentOffset;
|
|
}
|
|
|
|
if ( direction === 1 ) {
|
|
if ( contentOffset < offset ) {
|
|
return structuralOffset;
|
|
} else {
|
|
return Math.min( contentOffset, structuralOffset );
|
|
}
|
|
} else {
|
|
if ( contentOffset > offset ) {
|
|
return structuralOffset;
|
|
} else {
|
|
return Math.max( contentOffset, structuralOffset );
|
|
}
|
|
}
|
|
};
|
|
|
|
// TODO: Find a better name and a better place for this method - probably in a document view?
|
|
ve.ce.Surface.prototype.hasSlugAtOffset = function( offset ) {
|
|
var node = this.documentView.documentNode.getNodeFromOffset( offset );
|
|
if ( node && node.canHaveChildren() ) {
|
|
return node.hasSlugAtOffset( offset );
|
|
} else {
|
|
return false;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Based on a given offset returns DOM node and offset that can be used to place a cursor.
|
|
*
|
|
* The results of this function are meant to be used with rangy.
|
|
*
|
|
* @method
|
|
* @param offset {Integer} Linear model offset
|
|
* @returns {Object} Object containing a node and offset property where node is an HTML element and
|
|
* offset is the position within the element
|
|
*/
|
|
ve.ce.Surface.prototype.getNodeAndOffset = function( offset ) {
|
|
var node = this.documentView.getNodeFromOffset( offset ),
|
|
startOffset = this.documentView.getDocumentNode().getOffsetFromNode( node ) +
|
|
( ( node.isWrapped() ) ? 1 : 0 ),
|
|
current = [node.$.contents(), 0],
|
|
stack = [current],
|
|
item,
|
|
$item,
|
|
length;
|
|
|
|
while ( stack.length > 0 ) {
|
|
if ( current[1] >= current[0].length ) {
|
|
stack.pop();
|
|
current = stack[ stack.length - 1 ];
|
|
continue;
|
|
}
|
|
item = current[0][current[1]];
|
|
if ( item.nodeType === Node.TEXT_NODE ) {
|
|
length = item.textContent.length;
|
|
if ( offset >= startOffset && offset <= startOffset + length ) {
|
|
return {
|
|
node: item,
|
|
offset: offset - startOffset
|
|
};
|
|
} else {
|
|
startOffset += length;
|
|
}
|
|
} else if ( item.nodeType === Node.ELEMENT_NODE ) {
|
|
$item = current[0].eq( current[1] );
|
|
if ( $item.hasClass('ve-ce-slug') ) {
|
|
if ( offset === startOffset ) {
|
|
return {
|
|
node: $item[0],
|
|
offset: 1
|
|
};
|
|
}
|
|
} else if ( $item.is( '.ve-ce-branchNode, .ve-ce-leafNode' ) ) {
|
|
length = $item.data( 'node' ).model.getOuterLength();
|
|
if ( offset >= startOffset && offset < startOffset + length ) {
|
|
stack.push( [$item.contents(), 0] );
|
|
current[1]++;
|
|
current = stack[stack.length-1];
|
|
continue;
|
|
} else {
|
|
startOffset += length;
|
|
}
|
|
} else {
|
|
stack.push( [$item.contents(), 0] );
|
|
current[1]++;
|
|
current = stack[stack.length-1];
|
|
continue;
|
|
}
|
|
|
|
}
|
|
current[1]++;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Gets the linear offset based on a given DOM node and DOM offset
|
|
*
|
|
* @method
|
|
* @param domNode {DOM Node} DOM node
|
|
* @param domOffset {Integer} DOM offset within the DOM Element
|
|
* @returns {Integer} Linear model offset
|
|
*/
|
|
ve.ce.Surface.prototype.getOffset = function( domNode, domOffset ) {
|
|
if ( domNode.nodeType === Node.TEXT_NODE ) {
|
|
return this.getOffsetFromTextNode( domNode, domOffset );
|
|
} else {
|
|
return this.getOffsetFromElementNode( domNode, domOffset );
|
|
}
|
|
};
|
|
|
|
ve.ce.Surface.prototype.getOffsetFromTextNode = function( domNode, domOffset ) {
|
|
var $node, nodeModel, current, stack, item, offset, $item;
|
|
|
|
$node = $( domNode ).closest(
|
|
'.ve-ce-branchNode, .ve-ce-alienBlockNode, .ve-ce-alienInlineNode'
|
|
);
|
|
nodeModel = $node.data( 'node' ).getModel();
|
|
|
|
if ( ! $node.hasClass( 've-ce-branchNode' ) ) {
|
|
return nodeModel.getOffset();
|
|
}
|
|
|
|
current = [$node.contents(), 0];
|
|
stack = [current];
|
|
offset = 0;
|
|
|
|
while ( stack.length > 0 ) {
|
|
if ( current[1] >= current[0].length ) {
|
|
stack.pop();
|
|
current = stack[ stack.length - 1 ];
|
|
continue;
|
|
}
|
|
item = current[0][current[1]];
|
|
if ( item.nodeType === Node.TEXT_NODE ) {
|
|
if ( item === domNode ) {
|
|
offset += domOffset;
|
|
break;
|
|
} else {
|
|
offset += item.textContent.length;
|
|
}
|
|
} else if ( item.nodeType === Node.ELEMENT_NODE ) {
|
|
$item = current[0].eq( current[1] );
|
|
if ( $item.hasClass( 've-ce-slug' ) ) {
|
|
if ( $item.contents()[0] === domNode ) {
|
|
break;
|
|
}
|
|
} else if ( $item.hasClass( 've-ce-leafNode' ) ) {
|
|
offset += 2;
|
|
} else if ( $item.hasClass( 've-ce-branchNode' ) ) {
|
|
offset += $item.data( 'node' ).getOuterLength();
|
|
} else {
|
|
stack.push( [$item.contents(), 0 ] );
|
|
current[1]++;
|
|
current = stack[stack.length-1];
|
|
continue;
|
|
}
|
|
}
|
|
current[1]++;
|
|
}
|
|
return offset + nodeModel.getOffset() + ( nodeModel.isWrapped() ? 1 : 0 );
|
|
};
|
|
|
|
ve.ce.Surface.prototype.getOffsetFromElementNode = function( domNode, domOffset, addOuterLength ) {
|
|
var $domNode = $( domNode ),
|
|
nodeModel,
|
|
node;
|
|
|
|
if ( $domNode.hasClass( 've-ce-slug' ) ) {
|
|
if ( $domNode.prev().length > 0 ) {
|
|
nodeModel = $domNode.prev().data( 'node' ).getModel();
|
|
return nodeModel.getOffset() + nodeModel.getOuterLength();
|
|
}
|
|
if ( $domNode.next().length > 0 ) {
|
|
nodeModel = $domNode.next().data( 'node' ).getModel();
|
|
return nodeModel.getOffset();
|
|
}
|
|
}
|
|
|
|
if ( domOffset === 0 ) {
|
|
node = $domNode.data( 'node' );
|
|
if ( node ) {
|
|
nodeModel = $domNode.data( 'node' ).getModel();
|
|
if ( addOuterLength === true ) {
|
|
return nodeModel.getOffset() + nodeModel.getOuterLength();
|
|
} else {
|
|
return nodeModel.getOffset();
|
|
}
|
|
} else {
|
|
node = $domNode.contents().last()[0];
|
|
}
|
|
} else {
|
|
node = $domNode.contents()[ domOffset - 1 ];
|
|
}
|
|
|
|
if ( node.nodeType === Node.TEXT_NODE ) {
|
|
return this.getOffsetFromTextNode( node, node.length );
|
|
} else {
|
|
return this.getOffsetFromElementNode( node, 0, true );
|
|
}
|
|
};
|
|
|
|
/* Supplies the selection anchor coordinates to contextView */
|
|
ve.ce.Surface.prototype.getSelectionRect = function() {
|
|
var rangySel = rangy.getSelection();
|
|
return {
|
|
start: rangySel.getStartDocumentPos(),
|
|
end: rangySel.getEndDocumentPos()
|
|
};
|
|
};
|
|
|
|
/* Tests if the modifier key for keyboard shortcuts is pressed. */
|
|
ve.ce.Surface.isShortcutKey = function( e ) {
|
|
if ( e.ctrlKey || e.metaKey ) {
|
|
return true;
|
|
}
|
|
return false;
|
|
};
|
|
|
|
ve.ce.Surface.prototype.getModel = function() {
|
|
return this.model;
|
|
};
|
|
|
|
ve.ce.Surface.prototype.getDocument = function() {
|
|
return this.documentView;
|
|
};
|
|
|
|
/* Inheritance */
|
|
|
|
ve.extendClass( ve.ce.Surface, ve.EventEmitter );
|