mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-25 14:56:20 +00:00
367 lines
10 KiB
JavaScript
367 lines
10 KiB
JavaScript
/**
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* VisualEditor Surface class.
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*
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* @copyright 2011-2012 VisualEditor Team and others; see AUTHORS.txt
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* @license The MIT License (MIT); see LICENSE.txt
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*/
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/**
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* Creates an ve.Surface object.
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*
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* A surface is a top-level object which contains both a surface model and a surface view.
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*
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* @class
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* @constructor
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* @param {String} parent Selector of element to attach to
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* @param {HTMLElement} dom HTML element of document to edit
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* @param {Object} options Configuration options
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*/
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ve.Surface = function VeSurface( parent, dom, options ) {
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// Properties
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this.$ = $( '<div class="ve-surface"></div>' );
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this.documentModel = new ve.dm.Document( ve.dm.converter.getDataFromDom( dom ) );
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this.options = ve.extendObject( true, ve.Surface.defaultOptions, options );
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this.model = new ve.dm.Surface( this.documentModel );
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this.view = new ve.ce.Surface( this.$, this.model, this );
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this.context = new ve.ui.Context( this );
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this.toolbars = {};
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this.commands = {};
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this.enabled = true;
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// DOM Changes
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$( parent ).append( this.$ );
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this.$.append(
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// Contain floating content
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$( '<div style="clear: both;"></div>' ),
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// Temporary paste buffer
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// TODO: make 'paste' in surface stateful and remove this attrib
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// TODO: Use a less generic id than "paste", or get rid of the ID alltogether
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$( '<div id="paste" class="paste" contenteditable="true"></div>' )
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);
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// Initialization
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// Propagate to each node information that it is live (attached to the live DOM)
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this.view.getDocument().getDocumentNode().setLive( true );
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this.setupToolbars();
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this.setupCommands();
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this.resetSelection();
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ve.instances.push( this );
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this.model.startHistoryTracking();
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// Turn off native object editing. This must be tried after the surface has been added to DOM.
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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 ) { /* Silently ignore */ }
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};
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/* Static Members */
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ve.Surface.defaultOptions = {
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'toolbars': {
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'top': {
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'float': true,
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'tools': [
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{ 'name': 'history', 'items' : ['undo', 'redo'] },
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{ 'name': 'textStyle', 'items' : ['format'] },
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{ 'name': 'textStyle', 'items' : ['bold', 'italic', 'link', 'clear'] },
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{ 'name': 'list', 'items' : ['number', 'bullet', 'outdent', 'indent'] }
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]
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}
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},
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// Items can either be symbolic names or objects with trigger and action properties
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'commands': ['bold', 'italic', 'link', 'undo', 'redo', 'indent', 'unindent']
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};
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/* Methods */
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/**
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* Gets a reference to the surface model.
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*
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* @method
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* @returns {ve.dm.Surface} Surface model
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*/
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ve.Surface.prototype.getModel = function () {
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return this.model;
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};
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/**
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* Gets a reference to the document model.
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*
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* @method
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* @returns {ve.dm.Document} Document model
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*/
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ve.Surface.prototype.getDocumentModel = function () {
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return this.documentModel;
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};
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/**
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* Gets a reference to the surface view.
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*
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* @method
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* @returns {ve.ce.Surface} Surface view
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*/
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ve.Surface.prototype.getView = function () {
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return this.view;
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};
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/**
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* Gets a reference to the context user interface.
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*
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* @method
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* @returns {ve.ui.Context} Context user interface
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*/
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ve.Surface.prototype.getContext = function () {
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return this.context;
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};
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/**
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* Destroy the surface, releasing all memory and removing all DOM elements.
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*
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* @method
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* @returns {ve.ui.Context} Context user interface
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*/
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ve.Surface.prototype.destroy = function () {
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ve.instances.splice( ve.instances.indexOf( this ), 1 );
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this.$.remove();
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this.view.destroy();
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this.context.destroy();
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};
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/**
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* Disables editing.
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*
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* @method
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*/
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ve.Surface.prototype.disable = function () {
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this.view.disable();
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this.model.disable();
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this.enabled = false;
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};
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/**
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* Enables editing.
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*
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* @method
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*/
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ve.Surface.prototype.enable = function () {
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this.enabled = true;
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this.view.enable();
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this.model.enable();
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};
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/**
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* Enables editing.
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*
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* @method
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*/
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ve.Surface.prototype.isEnabled = function () {
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return this.enabled;
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};
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/**
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* Fix up the initial selection.
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*
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* Reselect the selection and force a poll. This forces the selection to be something reasonable.
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* In Firefox, the initial selection is (0,0), which causes problems (bug 42277).
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*/
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ve.Surface.prototype.resetSelection = function () {
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this.model.getFragment().select();
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this.view.surfaceObserver.poll();
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};
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/**
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* Executes an action or command.
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*
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* @method
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* @param {String|Command} action Name of action or command object
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* @param {String} [method] Name of method
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* @param {Mixed} [...] Additional arguments for action
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* @returns {Boolean} Action or command was executed
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*/
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ve.Surface.prototype.execute = function ( action, method ) {
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if ( !this.enabled ) {
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return;
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}
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var trigger, obj, ret;
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if ( action instanceof ve.Command ) {
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trigger = action.toString();
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if ( trigger in this.commands ) {
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return this.execute.apply( this, this.commands[trigger] );
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}
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} else if ( typeof action === 'string' && typeof method === 'string' ) {
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// Validate method
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if ( ve.actionFactory.doesActionSupportMethod( action, method ) ) {
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// Create an action object and execute the method on it
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obj = ve.actionFactory.create( action, this );
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ret = obj[method].apply( obj, Array.prototype.slice.call( arguments, 2 ) );
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return ret === undefined || !!ret;
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}
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}
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return false;
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};
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/**
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* Adds all commands from initialization options.
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*
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* Commands must be registered through {ve.commandRegsitry} prior to constructing the surface.
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*
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* @method
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* @param {String[]} commands Array of symbolic names of registered commands
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*/
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ve.Surface.prototype.setupCommands = function () {
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var i, iLen, j, jLen, triggers, trigger, command,
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commands = this.options.commands;
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for ( i = 0, iLen = commands.length; i < iLen; i++ ) {
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command = ve.commandRegistry.lookup( commands[i] );
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if ( !command ) {
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throw new Error( 'No command registered by that name: ' + commands[i] );
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}
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triggers = command.trigger;
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if ( !ve.isArray( triggers ) ) {
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triggers = [triggers];
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}
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for ( j = 0, jLen = triggers.length; j < jLen; j++ ) {
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// Normalize
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trigger = ( new ve.Command( triggers[j] ) ).toString();
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// Validate
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if ( trigger.length === 0 ) {
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throw new Error( 'Incomplete command: ' + triggers[j] );
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}
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this.commands[trigger] = command.action;
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}
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}
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};
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/**
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* Initializes the toolbar.
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*
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* This method uses {this.options} for it's configuration.
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*
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* @method
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*/
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ve.Surface.prototype.setupToolbars = function () {
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var name, config, toolbar,
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toolbars = this.options.toolbars;
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for ( name in toolbars ) {
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config = toolbars[name];
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if ( ve.isPlainObject( config ) ) {
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this.toolbars[name] = toolbar = { '$': $( '<div class="ve-ui-toolbar"></div>' ) };
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if ( name === 'top' ) {
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// Add extra sections to the toolbar
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toolbar.$.append(
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'<div class="ve-ui-actions"></div>' +
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'<div style="clear:both"></div>' +
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'<div class="ve-ui-toolbar-shadow"></div>'
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);
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// Wrap toolbar for floating
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toolbar.$wrapper = $( '<div class="ve-ui-toolbar-wrapper"></div>' )
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.append( this.toolbars[name].$ );
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// Add toolbar to surface
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this.$.before( toolbar.$wrapper );
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if ( 'float' in config && config.float === true ) {
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// Float top toolbar
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this.floatTopToolbar();
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}
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}
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toolbar.instance = new ve.ui.Toolbar( toolbar.$, this, config.tools );
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}
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}
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};
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/*
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* Overlays the toolbar to the top of the screen when it would normally be out of view.
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*
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* TODO: Determine if this would be better in ui.toolbar vs here.
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* TODO: This needs to be refactored so that it only works on the main editor top tool bar.
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*
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* @method
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*/
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ve.Surface.prototype.floatTopToolbar = function () {
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if ( !this.toolbars.top ) {
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return;
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}
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var $wrapper = this.toolbars.top.$wrapper,
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$toolbar = this.toolbars.top.$,
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$window = $( window );
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$window.on( {
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'resize': function () {
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if ( $wrapper.hasClass( 've-ui-toolbar-wrapper-floating' ) ) {
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var toolbarsOffset = $wrapper.offset(),
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left = toolbarsOffset.left,
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right = $window.width() - $wrapper.outerWidth() - left;
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$toolbar.css( {
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'left': left,
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'right': right
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} );
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}
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},
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'scroll': function () {
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var left, right,
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toolbarsOffset = $wrapper.offset(),
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$editorDocument = $wrapper.parent().find('.ve-surface .ve-ce-documentNode'),
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$lastBranch = $editorDocument.children( '.ve-ce-branchNode:last' );
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if ( $window.scrollTop() > toolbarsOffset.top ) {
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left = toolbarsOffset.left;
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right = $window.width() - $wrapper.outerWidth() - left;
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// If not floating, set float
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if ( !$wrapper.hasClass( 've-ui-toolbar-wrapper-floating' ) ) {
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$wrapper
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.css( 'height', $wrapper.height() )
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.addClass( 've-ui-toolbar-wrapper-floating' );
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$toolbar.css( {
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'left': left,
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'right': right
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} );
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} else {
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// Toolbar is floated
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if (
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// There's at least one branch
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$lastBranch.length &&
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// Toolbar is at or below the top of last node in the document
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$window.scrollTop() + $toolbar.height() >= $lastBranch.offset().top
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) {
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if ( !$wrapper.hasClass( 've-ui-toolbar-wrapper-bottom' ) ) {
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$wrapper
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.removeClass( 've-ui-toolbar-wrapper-floating' )
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.addClass( 've-ui-toolbar-wrapper-bottom' );
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$toolbar.css({
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'top': $window.scrollTop() + 'px',
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'left': left,
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'right': right
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});
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}
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} else { // Unattach toolbar
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if ( $wrapper.hasClass( 've-ui-toolbar-wrapper-bottom' ) ) {
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$wrapper
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.removeClass( 've-ui-toolbar-wrapper-bottom' )
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.addClass( 've-ui-toolbar-wrapper-floating' );
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$toolbar.css( {
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'top': 0,
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'left': left,
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'right': right
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} );
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}
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}
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}
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} else { // Return toolbar to top position
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if (
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$wrapper.hasClass( 've-ui-toolbar-wrapper-floating' ) ||
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$wrapper.hasClass( 've-ui-toolbar-wrapper-bottom' )
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) {
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$wrapper.css( 'height', 'auto' )
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.removeClass( 've-ui-toolbar-wrapper-floating' )
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.removeClass( 've-ui-toolbar-wrapper-bottom' );
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$toolbar.css( {
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'top': 0,
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'left': 0,
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'right': 0
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} );
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}
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}
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}
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} );
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};
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