mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-15 18:39:52 +00:00
a55217ec3b
This prevents memory waste when switching between read and visual editor tabs, which happens entirely on the client. Change-Id: I31b50accac38d72a9367b9035504552dc0150104
332 lines
9.5 KiB
JavaScript
332 lines
9.5 KiB
JavaScript
/**
|
|
* VisualEditor Surface class.
|
|
*
|
|
* @copyright 2011-2012 VisualEditor Team and others; see AUTHORS.txt
|
|
* @license The MIT License (MIT); see LICENSE.txt
|
|
*/
|
|
|
|
/**
|
|
* Creates an ve.Surface object.
|
|
*
|
|
* A surface is a top-level object which contains both a surface model and a surface view.
|
|
*
|
|
* @class
|
|
* @constructor
|
|
* @param {String} parent Selector of element to attach to
|
|
* @param {HTMLElement} dom HTML element of document to edit
|
|
* @param {Object} options Configuration options
|
|
*/
|
|
ve.Surface = function VeSurface( parent, dom, options ) {
|
|
// Properties
|
|
this.$ = $( '<div class="ve-surface"></div>' );
|
|
this.documentModel = new ve.dm.Document( ve.dm.converter.getDataFromDom( dom ) );
|
|
this.options = ve.extendObject( true, ve.Surface.defaultOptions, options );
|
|
this.model = new ve.dm.Surface( this.documentModel );
|
|
this.view = new ve.ce.Surface( this.$, this.model, this );
|
|
this.context = new ve.ui.Context( this );
|
|
this.toolbars = {};
|
|
this.commands = {};
|
|
|
|
// DOM Changes
|
|
$( parent ).append( this.$ );
|
|
this.$.append(
|
|
// Contain floating content
|
|
$( '<div style="clear: both;"></div>' ),
|
|
// Temporary paste buffer
|
|
// TODO: make 'paste' in surface stateful and remove this attrib
|
|
// TODO: Use a less generic id than "paste", or get rid of the ID alltogether
|
|
$( '<div id="paste" class="paste" contenteditable="true"></div>' )
|
|
);
|
|
|
|
// Initialization
|
|
// Propagate to each node information that it is live (attached to the live DOM)
|
|
this.view.getDocument().getDocumentNode().setLive( true );
|
|
this.setupToolbars();
|
|
this.setupCommands();
|
|
this.resetSelection();
|
|
ve.instances.push( this );
|
|
this.model.startHistoryTracking();
|
|
|
|
// Turn off native object editing. This must be tried after the surface has been added to DOM.
|
|
try {
|
|
document.execCommand( 'enableObjectResizing', false, false );
|
|
document.execCommand( 'enableInlineTableEditing', false, false );
|
|
} catch ( e ) { /* Silently ignore */ }
|
|
};
|
|
|
|
/* Static Members */
|
|
|
|
ve.Surface.defaultOptions = {
|
|
'toolbars': {
|
|
'top': {
|
|
'float': true,
|
|
'tools': [
|
|
{ 'name': 'history', 'items' : ['undo', 'redo'] },
|
|
{ 'name': 'textStyle', 'items' : ['format'] },
|
|
{ 'name': 'textStyle', 'items' : ['bold', 'italic', 'link', 'clear'] },
|
|
{ 'name': 'list', 'items' : ['number', 'bullet', 'outdent', 'indent'] }
|
|
]
|
|
}
|
|
},
|
|
// Items can either be symbolic names or objects with trigger and action properties
|
|
'commands': ['bold', 'italic', 'link', 'undo', 'redo', 'indent', 'unindent']
|
|
};
|
|
|
|
/* Methods */
|
|
|
|
/**
|
|
* Gets a reference to the surface model.
|
|
*
|
|
* @method
|
|
* @returns {ve.dm.Surface} Surface model
|
|
*/
|
|
ve.Surface.prototype.getModel = function () {
|
|
return this.model;
|
|
};
|
|
|
|
/**
|
|
* Gets a reference to the document model.
|
|
*
|
|
* @method
|
|
* @returns {ve.dm.Document} Document model
|
|
*/
|
|
ve.Surface.prototype.getDocumentModel = function () {
|
|
return this.documentModel;
|
|
};
|
|
|
|
/**
|
|
* Gets a reference to the surface view.
|
|
*
|
|
* @method
|
|
* @returns {ve.ce.Surface} Surface view
|
|
*/
|
|
ve.Surface.prototype.getView = function () {
|
|
return this.view;
|
|
};
|
|
|
|
/**
|
|
* Gets a reference to the context user interface.
|
|
*
|
|
* @method
|
|
* @returns {ve.ui.Context} Context user interface
|
|
*/
|
|
ve.Surface.prototype.getContext = function () {
|
|
return this.context;
|
|
};
|
|
|
|
/**
|
|
* Destroy the surface, releasing all memory and removing all DOM elements.
|
|
*
|
|
* @method
|
|
* @returns {ve.ui.Context} Context user interface
|
|
*/
|
|
ve.Surface.prototype.destroy = function () {
|
|
ve.instances.splice( ve.instances.indexOf( this ), 1 );
|
|
this.$.remove();
|
|
this.view.destroy();
|
|
this.context.destroy();
|
|
};
|
|
|
|
/**
|
|
* Fix up the initial selection.
|
|
*
|
|
* Reselect the selection and force a poll. This forces the selection to be something reasonable.
|
|
* In Firefox, the initial selection is (0,0), which causes problems (bug 42277).
|
|
*/
|
|
ve.Surface.prototype.resetSelection = function () {
|
|
this.model.getFragment().select();
|
|
this.view.surfaceObserver.poll();
|
|
};
|
|
|
|
/**
|
|
* Executes an action or command.
|
|
*
|
|
* @method
|
|
* @param {String|Command} action Name of action or command object
|
|
* @param {String} [method] Name of method
|
|
* @param {Mixed} [...] Additional arguments for action
|
|
* @returns {Boolean} Action or command was executed
|
|
*/
|
|
ve.Surface.prototype.execute = function ( action, method ) {
|
|
var trigger, obj, ret;
|
|
if ( action instanceof ve.Command ) {
|
|
trigger = action.toString();
|
|
if ( trigger in this.commands ) {
|
|
return this.execute.apply( this, this.commands[trigger] );
|
|
}
|
|
} else if ( typeof action === 'string' && typeof method === 'string' ) {
|
|
// Validate method
|
|
if ( ve.actionFactory.doesActionSupportMethod( action, method ) ) {
|
|
// Create an action object and execute the method on it
|
|
obj = ve.actionFactory.create( action, this );
|
|
ret = obj[method].apply( obj, Array.prototype.slice.call( arguments, 2 ) );
|
|
return ret === undefined || !!ret;
|
|
}
|
|
}
|
|
return false;
|
|
};
|
|
|
|
/**
|
|
* Adds all commands from initialization options.
|
|
*
|
|
* Commands must be registered through {ve.commandRegsitry} prior to constructing the surface.
|
|
*
|
|
* @method
|
|
* @param {String[]} commands Array of symbolic names of registered commands
|
|
*/
|
|
ve.Surface.prototype.setupCommands = function () {
|
|
var i, iLen, j, jLen, triggers, trigger, command,
|
|
commands = this.options.commands;
|
|
for ( i = 0, iLen = commands.length; i < iLen; i++ ) {
|
|
command = ve.commandRegistry.lookup( commands[i] );
|
|
if ( !command ) {
|
|
throw new Error( 'No command registered by that name: ' + commands[i] );
|
|
}
|
|
triggers = command.trigger;
|
|
if ( !ve.isArray( triggers ) ) {
|
|
triggers = [triggers];
|
|
}
|
|
for ( j = 0, jLen = triggers.length; j < jLen; j++ ) {
|
|
// Normalize
|
|
trigger = ( new ve.Command( triggers[j] ) ).toString();
|
|
// Validate
|
|
if ( trigger.length === 0 ) {
|
|
throw new Error( 'Incomplete command: ' + triggers[j] );
|
|
}
|
|
this.commands[trigger] = command.action;
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Initializes the toolbar.
|
|
*
|
|
* This method uses {this.options} for it's configuration.
|
|
*
|
|
* @method
|
|
*/
|
|
ve.Surface.prototype.setupToolbars = function () {
|
|
var name, config, toolbar,
|
|
toolbars = this.options.toolbars;
|
|
for ( name in toolbars ) {
|
|
config = toolbars[name];
|
|
if ( ve.isPlainObject( config ) ) {
|
|
this.toolbars[name] = toolbar = { '$': $( '<div class="ve-ui-toolbar"></div>' ) };
|
|
if ( name === 'top' ) {
|
|
// Add extra sections to the toolbar
|
|
toolbar.$.append(
|
|
'<div class="ve-ui-actions"></div>' +
|
|
'<div style="clear:both"></div>' +
|
|
'<div class="ve-ui-toolbar-shadow"></div>'
|
|
);
|
|
// Wrap toolbar for floating
|
|
toolbar.$wrapper = $( '<div class="ve-ui-toolbar-wrapper"></div>' )
|
|
.append( this.toolbars[name].$ );
|
|
// Add toolbar to surface
|
|
this.$.before( toolbar.$wrapper );
|
|
if ( 'float' in config && config.float === true ) {
|
|
// Float top toolbar
|
|
this.floatTopToolbar();
|
|
}
|
|
}
|
|
toolbar.instance = new ve.ui.Toolbar( toolbar.$, this, config.tools );
|
|
}
|
|
}
|
|
};
|
|
|
|
/*
|
|
* Overlays the toolbar to the top of the screen when it would normally be out of view.
|
|
*
|
|
* TODO: Determine if this would be better in ui.toolbar vs here.
|
|
* TODO: This needs to be refactored so that it only works on the main editor top tool bar.
|
|
*
|
|
* @method
|
|
*/
|
|
ve.Surface.prototype.floatTopToolbar = function () {
|
|
if ( !this.toolbars.top ) {
|
|
return;
|
|
}
|
|
var $wrapper = this.toolbars.top.$wrapper,
|
|
$toolbar = this.toolbars.top.$,
|
|
$window = $( window );
|
|
|
|
$window.on( {
|
|
'resize': function () {
|
|
if ( $wrapper.hasClass( 've-ui-toolbar-wrapper-floating' ) ) {
|
|
var toolbarsOffset = $wrapper.offset(),
|
|
left = toolbarsOffset.left,
|
|
right = $window.width() - $wrapper.outerWidth() - left;
|
|
$toolbar.css( {
|
|
'left': left,
|
|
'right': right
|
|
} );
|
|
}
|
|
},
|
|
'scroll': function () {
|
|
var left, right,
|
|
toolbarsOffset = $wrapper.offset(),
|
|
$editorDocument = $wrapper.parent().find('.ve-surface .ve-ce-documentNode'),
|
|
$lastBranch = $editorDocument.children( '.ve-ce-branchNode:last' );
|
|
|
|
if ( $window.scrollTop() > toolbarsOffset.top ) {
|
|
left = toolbarsOffset.left;
|
|
right = $window.width() - $wrapper.outerWidth() - left;
|
|
// If not floating, set float
|
|
if ( !$wrapper.hasClass( 've-ui-toolbar-wrapper-floating' ) ) {
|
|
$wrapper
|
|
.css( 'height', $wrapper.height() )
|
|
.addClass( 've-ui-toolbar-wrapper-floating' );
|
|
$toolbar.css( {
|
|
'left': left,
|
|
'right': right
|
|
} );
|
|
} else {
|
|
// Toolbar is floated
|
|
if (
|
|
// There's at least one branch
|
|
$lastBranch.length &&
|
|
// Toolbar is at or below the top of last node in the document
|
|
$window.scrollTop() + $toolbar.height() >= $lastBranch.offset().top
|
|
) {
|
|
if ( !$wrapper.hasClass( 've-ui-toolbar-wrapper-bottom' ) ) {
|
|
$wrapper
|
|
.removeClass( 've-ui-toolbar-wrapper-floating' )
|
|
.addClass( 've-ui-toolbar-wrapper-bottom' );
|
|
$toolbar.css({
|
|
'top': $window.scrollTop() + 'px',
|
|
'left': left,
|
|
'right': right
|
|
});
|
|
}
|
|
} else { // Unattach toolbar
|
|
if ( $wrapper.hasClass( 've-ui-toolbar-wrapper-bottom' ) ) {
|
|
$wrapper
|
|
.removeClass( 've-ui-toolbar-wrapper-bottom' )
|
|
.addClass( 've-ui-toolbar-wrapper-floating' );
|
|
$toolbar.css( {
|
|
'top': 0,
|
|
'left': left,
|
|
'right': right
|
|
} );
|
|
}
|
|
}
|
|
}
|
|
} else { // Return toolbar to top position
|
|
if (
|
|
$wrapper.hasClass( 've-ui-toolbar-wrapper-floating' ) ||
|
|
$wrapper.hasClass( 've-ui-toolbar-wrapper-bottom' )
|
|
) {
|
|
$wrapper.css( 'height', 'auto' )
|
|
.removeClass( 've-ui-toolbar-wrapper-floating' )
|
|
.removeClass( 've-ui-toolbar-wrapper-bottom' );
|
|
$toolbar.css( {
|
|
'top': 0,
|
|
'left': 0,
|
|
'right': 0
|
|
} );
|
|
}
|
|
}
|
|
}
|
|
} );
|
|
};
|