mediawiki-extensions-Visual.../modules/ve-mw/init/targets/ve.init.mw.ViewPageTarget.js
Ed Sanders 3838498e8b Store inner whitespace of the body and compare it on conversion
Calculate and store the two inner whitespace values of the body in the
dm.Document. When converting back, make sure the first/last nodes
pre/post outer whitespace matches the inner left/right whitespace
of the body.

Bug: 54964
Change-Id: I45f1ffd63669f25a6cae878400bfe21719ed58ee
2013-10-31 17:09:06 +01:00

1632 lines
47 KiB
JavaScript

/*!
* VisualEditor MediaWiki Initialization ViewPageTarget class.
*
* @copyright 2011-2013 VisualEditor Team and others; see AUTHORS.txt
* @license The MIT License (MIT); see LICENSE.txt
*/
/*global mw, confirm, alert */
/**
* Initialization MediaWiki view page target.
*
* @class
* @extends ve.init.mw.Target
*
* @constructor
*/
ve.init.mw.ViewPageTarget = function VeInitMwViewPageTarget() {
var browserWhitelisted,
currentUri = new mw.Uri();
// Parent constructor
ve.init.mw.Target.call(
this, $( '#content' ),
mw.config.get( 'wgRelevantPageName' ),
currentUri.query.oldid
);
// Properties
this.$document = null;
this.$spinner = $( '<div class="ve-init-mw-viewPageTarget-loading"></div>' );
this.$toolbarTracker = $( '<div class="ve-init-mw-viewPageTarget-toolbarTracker"></div>' );
this.toolbarTrackerFloating = null;
this.toolbarOffset = null;
this.toolbarCancelButton = null;
this.toolbarSaveButton = null;
this.saveDialog = null;
this.onBeforeUnloadFallback = null;
this.onBeforeUnloadHandler = null;
this.active = false;
this.edited = false;
this.sanityCheckFinished = false;
this.sanityCheckVerified = false;
this.activating = false;
this.deactivating = false;
// If this is true then #transformPage / #restorePage will not call pushState
// This is to avoid adding a new history entry for the url we just got from onpopstate
// (which would mess up with the expected order of Back/Forwards browsing)
this.actFromPopState = false;
this.scrollTop = null;
this.currentUri = currentUri;
this.section = currentUri.query.vesection || null;
this.sectionPositionRestored = false;
this.sectionTitleRestored = false;
this.namespaceName = mw.config.get( 'wgCanonicalNamespace' );
this.viewUri = new mw.Uri( mw.util.wikiGetlink( this.pageName ) );
this.veEditUri = this.viewUri.clone().extend( { 'veaction': 'edit' } );
this.isViewPage = (
mw.config.get( 'wgAction' ) === 'view' &&
currentUri.query.diff === undefined
);
this.originalDocumentTitle = document.title;
this.editSummaryByteLimit = 255;
this.tabLayout = mw.config.get( 'wgVisualEditorConfig' ).tabLayout;
/**
* @property {jQuery.Promise|null}
*/
this.sanityCheckPromise = null;
browserWhitelisted = (
'vewhitelist' in currentUri.query ||
$.client.test( ve.init.mw.ViewPageTarget.compatibility.whitelist, null, true )
);
// Events
this.connect( this, {
'load': 'onLoad',
'save': 'onSave',
'loadError': 'onLoadError',
'tokenError': 'onTokenError',
'saveError': 'onSaveError',
'editConflict': 'onEditConflict',
'showChanges': 'onShowChanges',
'showChangesError': 'onShowChangesError',
'noChanges': 'onNoChanges',
'serializeError': 'onSerializeError'
} );
if ( !browserWhitelisted ) {
// Show warning in unknown browsers that pass the support test
// Continue at own risk.
this.localNoticeMessages.push( 'visualeditor-browserwarning' );
}
if ( currentUri.query.venotify ) {
// The following messages can be used here:
// visualeditor-notification-saved
// visualeditor-notification-created
// visualeditor-notification-restored
mw.hook( 'postEdit' ).fire( {
'message':
ve.msg( 'visualeditor-notification-' + currentUri.query.venotify,
new mw.Title( this.pageName ).toText()
)
} );
if ( window.history.replaceState ) {
delete currentUri.query.venotify;
window.history.replaceState( null, document.title, currentUri );
}
}
this.setupSkinTabs();
window.addEventListener( 'popstate', ve.bind( this.onWindowPopState, this ) ) ;
};
/* Inheritance */
OO.inheritClass( ve.init.mw.ViewPageTarget, ve.init.mw.Target );
/* Static Properties */
/**
* Compatibility map used with jQuery.client to black-list incompatible browsers.
*
* @static
* @property
*/
ve.init.mw.ViewPageTarget.compatibility = {
// The key is the browser name returned by jQuery.client
// The value is either null (match all versions) or a list of tuples
// containing an inequality (<,>,<=,>=) and a version number
'whitelist': {
'firefox': [['>=', 15]],
'iceweasel': [['>=', 10]],
'safari': [['>=', 5]],
'chrome': [['>=', 19]]
}
};
/* Methods */
/**
* Switch to edit mode.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.activate = function () {
if ( !this.active && !this.activating ) {
this.activating = true;
// User interface changes
this.transformPage();
this.showSpinner();
this.hideTableOfContents();
this.mutePageContent();
this.mutePageTitle();
this.saveScrollPosition();
this.load();
}
};
/**
* Switch to view mode.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.deactivate = function ( override ) {
if ( override || ( this.active && !this.deactivating ) ) {
if (
override ||
!this.edited ||
confirm( ve.msg( 'visualeditor-viewpage-savewarning' ) )
) {
this.deactivating = true;
// User interface changes
this.restorePage();
this.hideSpinner();
this.showTableOfContents();
if ( this.toolbarCancelButton ) {
// If deactivate is called before a successful load, then
// setupToolbarButtons has not been called yet and as such tearDownToolbarButtons
// would throw an error when trying call methods on the button property (bug 46456)
this.tearDownToolbarButtons();
this.detachToolbarButtons();
}
if ( this.saveDialog ) {
// If we got as far as setting up the save dialog, tear it down
this.saveDialog.reset();
this.saveDialog.close();
}
// Check we got as far as setting up the surface
if ( this.active ) {
// If we got as far as setting up the surface, tear that down
this.tearDownSurface();
}
// Show/restore components that are otherwise handled by tearDownSurface
this.showPageContent();
this.restorePageTitle();
// If there is a load in progress, abort it
if ( this.loading ) {
this.loading.abort();
}
this.deactivating = false;
mw.hook( 've.deactivationComplete' ).fire();
}
}
};
/**
* Handle successful DOM load event.
*
* @method
* @param {HTMLDocument} doc Parsed DOM from server
*/
ve.init.mw.ViewPageTarget.prototype.onLoad = function ( doc ) {
if ( this.activating ) {
this.edited = false;
this.doc = doc;
this.setUpSurface( doc, ve.bind( function() {
this.startSanityCheck();
this.setupToolbarButtons();
this.setupSaveDialog();
this.attachToolbarButtons();
this.restoreScrollPosition();
this.restoreEditSection();
this.setupBeforeUnloadHandler();
this.$document[0].focus();
this.activating = false;
if ( mw.config.get( 'wgVisualEditorConfig' ).showBetaWelcome ) {
this.showBetaWelcome();
}
mw.hook( 've.activationComplete' ).fire();
}, this ) );
}
};
/**
* Handle failed DOM load event.
*
* @method
* @param {Object} response HTTP Response object
* @param {string} status Text status message
* @param {Mixed} error Thrown exception or HTTP error string
*/
ve.init.mw.ViewPageTarget.prototype.onLoadError = function ( response, status ) {
// Don't show an error if the load was manually aborted
if ( status !== 'abort' && confirm( ve.msg( 'visualeditor-loadwarning', status ) ) ) {
this.load();
} else {
this.activating = false;
// User interface changes
this.deactivate( true );
}
};
/**
* Handle failed token refresh event.
*
* @method
* @param {Object} response Response object
* @param {string} status Text status message
* @param {Mixed} error Thrown exception or HTTP error string
*/
ve.init.mw.ViewPageTarget.prototype.onTokenError = function ( response, status ) {
if ( confirm( ve.msg( 'visualeditor-loadwarning-token', status ) ) ) {
this.load();
} else {
this.activating = false;
// User interface changes
this.deactivate( true );
}
};
/**
* Handle successful DOM save event.
*
* @method
* @param {HTMLElement} html Rendered HTML from server
* @param {number} [newid] New revision id, undefined if unchanged
*/
ve.init.mw.ViewPageTarget.prototype.onSave = function ( html, newid ) {
if ( !this.pageExists || this.restoring ) {
// This is a page creation or restoration, refresh the page
this.tearDownBeforeUnloadHandler();
window.location.href = this.viewUri.extend( {
'venotify': this.restoring ? 'restored' : 'created'
} );
} else {
// Update watch link to match 'watch checkbox' in save dialog.
// User logged in if module loaded.
// Just checking for mw.page.watch is not enough because in Firefox
// there is Object.prototype.watch...
if ( mw.page.watch && mw.page.watch.updateWatchLink ) {
var watchChecked = this.saveDialog.$saveOptions
.find( '.ve-ui-mwSaveDialog-checkboxes' )
.find( '#wpWatchthis' )
.prop( 'checked' );
mw.page.watch.updateWatchLink(
$( '#ca-watch a, #ca-unwatch a' ),
watchChecked ? 'unwatch': 'watch'
);
}
// If we were explicitly editing an older version, make sure we won't
// load the same old version again, now that we've saved the next edit
// will be against the latest version.
// TODO: What about oldid in the url?
this.restoring = false;
if ( newid !== undefined ) {
mw.config.set( 'wgCurRevisionId', newid );
this.revid = newid;
}
this.saveDialog.close();
this.saveDialog.reset();
this.replacePageContent( html );
this.setupSectionEditLinks();
this.tearDownBeforeUnloadHandler();
this.deactivate( true );
mw.hook( 'postEdit' ).fire( {
'message':
ve.msg( 'visualeditor-notification-saved',
new mw.Title( this.pageName ).toText()
)
} );
}
};
/**
* Handle failed DOM save event.
*
* @method
* @param {Object} jqXHR
* @param {string} status Text status message
* @param {Object|null} data API response data
*/
ve.init.mw.ViewPageTarget.prototype.onSaveError = function ( jqXHR, status, data ) {
var api, editApi,
viewPage = this;
this.saveDialog.saveButton.setDisabled( false );
this.saveDialog.$loadingIcon.hide();
this.saveDialog.clearMessage( 'api-save-error' );
// Handle empty response
if ( !data ) {
this.saveDialog.showMessage(
'api-save-error',
ve.msg( 'visualeditor-saveerror', 'Empty server response' ),
{
wrap: 'error'
}
);
this.saveDialog.saveButton.setDisabled( true );
return;
}
editApi = data && data.visualeditoredit && data.visualeditoredit.edit;
// Handle spam blacklist error (either from core or from Extension:SpamBlacklist)
if ( editApi && editApi.spamblacklist ) {
this.saveDialog.showMessage(
'api-save-error',
// TODO: Use mediawiki.language equivalant of Language.php::listToText once it exists
ve.msg( 'spamprotectiontext' ) + ' ' + ve.msg( 'spamprotectionmatch', editApi.spamblacklist.split( '|' ).join( ', ' ) ),
{
wrap: 'error'
}
);
this.saveDialog.saveButton.setDisabled( true );
return;
}
// Handle warnings/errors from Extension:AbuseFilter
// TODO: Move this to a plugin
if ( editApi && editApi.info && editApi.info.indexOf( 'Hit AbuseFilter:' ) === 0 && editApi.warning ) {
this.saveDialog.showMessage(
'api-save-error',
$.parseHTML( editApi.warning ),
{ wrap: false }
);
// Don't disable the save button. If the action is not disallowed the user may save the
// edit by pressing Save again. The AbuseFilter API currently has no way to distinguish
// between filter triggers that are and aren't disallowing the action.
return;
}
// Handle token errors
if ( data.error && data.error.code === 'badtoken' ) {
api = new mw.Api();
viewPage.saveDialog.saveButton.setDisabled( true );
viewPage.saveDialog.$loadingIcon.show();
api.get( {
// action=query&meta=userinfo and action=tokens&type=edit can't be combined
// but action=query&meta=userinfo and action=query&prop=info can, however
// that means we have to give it titles and deal with page ids.
'action': 'query',
'meta': 'userinfo',
'prop': 'info',
// Try to send the normalised form so that it is less likely we get extra data like
// data.normalised back that we don't need.
'titles': new mw.Title( viewPage.pageName ).toText(),
'indexpageids': '',
'intoken': 'edit'
} )
.always( function () {
viewPage.saveDialog.$loadingIcon.hide();
} )
.done( function ( data ) {
var badTokenText, userMsg,
userInfo = data.query && data.query.userinfo,
pageInfo = data.query && data.query.pages && data.query.pageids &&
data.query.pageids[0] && data.query.pages[ data.query.pageids[0] ],
editToken = pageInfo && pageInfo.edittoken;
if ( userInfo && editToken ) {
viewPage.editToken = editToken;
if (
( mw.user.isAnon() && userInfo.anon !== undefined ) ||
// Comparing id instead of name to pretect against possible
// normalisation and against case where the user got renamed.
mw.config.get( 'wgUserId' ) === userInfo.id
) {
// New session is the same user still
viewPage.saveDocument();
} else {
// The now current session is a different user
viewPage.saveDialog.saveButton.setDisabled( false );
// Trailing space is to separate from the other message.
badTokenText = document.createTextNode( mw.msg( 'visualeditor-savedialog-error-badtoken' ) + ' ' );
if ( userInfo.anon !== undefined ) {
// New session is an anonymous user
mw.config.set( {
// wgUserId is unset for anonymous users, not set to null
'wgUserId': undefined,
// wgUserName is explicitly set to null for anonymous users,
// functions like mw.user.isAnon rely on this.
'wgUserName': null
} );
viewPage.saveDialog.showMessage(
'api-save-error',
$( badTokenText ).add(
$.parseHTML( mw.message( 'visualeditor-savedialog-identify-anon' ).parse() )
),
{ wrap: 'warning' }
);
} else {
// New session is a different user
mw.config.set( { 'wgUserId': userInfo.id, 'wgUserName': userInfo.name } );
// mediawiki.jqueryMsg has a bug with [[User:$1|$1]] (bug 51388)
userMsg = 'visualeditor-savedialog-identify-user---' + userInfo.name;
mw.messages.set(
userMsg,
mw.messages.get( 'visualeditor-savedialog-identify-user' )
.replace( /\$1/g, userInfo.name )
);
viewPage.saveDialog.showMessage(
'api-save-error',
$( badTokenText ).add(
$.parseHTML( mw.message( userMsg ).parse() )
),
{ wrap: 'warning' }
);
}
}
}
} );
return;
}
// Handle captcha
// Captcha "errors" usually aren't errors. We simply don't know about them ahead of time,
// so we save once, then (if required) we get an error with a captcha back and try again after
// the user solved the captcha.
// TODO: ConfirmEdit API is horrible, there is no reliable way to know whether it is a "math",
// "question" or "fancy" type of captcha. They all expose differently named properties in the
// API for different things in the UI. At this point we only support the FancyCaptha which we
// very intuitively detect by the presence of a "url" property.
if ( editApi && editApi.captcha && editApi.captcha.url ) {
this.captcha = {
input: new OO.ui.TextInputWidget(),
id: editApi.captcha.id
};
this.saveDialog.showMessage(
'api-save-error',
$( '<div>' ).append(
// msg: simplecaptcha-edit, fancycaptcha-edit, ..
$( '<p>' ).append(
$( '<strong>' ).text( mw.msg( 'captcha-label' ) ),
document.createTextNode( mw.msg( 'colon-separator' ) ),
$( $.parseHTML( mw.message( 'fancycaptcha-edit' ).parse() ) )
.filter( 'a' ).attr( 'target', '_blank ' ).end()
),
$( '<img>' ).attr( 'src', editApi.captcha.url ),
this.captcha.input.$
),
{
wrap: false
}
);
return;
}
// Handle (other) unknown and/or unrecoverable errors
this.saveDialog.showMessage(
'api-save-error',
document.createTextNode(
( editApi && editApi.info ) ||
( data.error && data.error.info ) ||
( editApi && editApi.code ) ||
( data.error && data.error.code ) ||
'Unknown error'
),
{
wrap: 'error'
}
);
this.saveDialog.saveButton.setDisabled( true );
};
/**
* Handle Show changes event.
*
* @method
* @param {string} diffHtml
*/
ve.init.mw.ViewPageTarget.prototype.onShowChanges = function ( diffHtml ) {
// Invalidate the viewer diff on next change
this.surface.getModel().getDocument().connect( this, { 'transact': 'clearSaveDialogDiff' } );
this.saveDialog.setDiffAndReview( diffHtml );
};
/**
* Handle Serialize event.
*
* @method
* @param {string} wikitext
*/
ve.init.mw.ViewPageTarget.prototype.onSerialize = function ( wikitext ) {
// Invalidate the viewer wikitext on next change
this.surface.getModel().getDocument().connect( this, { 'transact': 'clearSaveDialogDiff' } );
this.saveDialog.setDiffAndReview( $( '<pre>' ).text( wikitext ) );
};
/**
* Handle failed show changes event.
*
* @method
* @param {Object} jqXHR
* @param {string} status Text status message
*/
ve.init.mw.ViewPageTarget.prototype.onShowChangesError = function ( jqXHR, status ) {
alert( ve.msg( 'visualeditor-differror', status ) );
this.saveDialog.$loadingIcon.hide();
};
/**
* Called if a call to target.serialize() failed.
*
* @method
* @param {jqXHR|null} jqXHR
* @param {string} status Text status message
*/
ve.init.mw.ViewPageTarget.prototype.onSerializeError = function ( jqXHR, status ) {
alert( ve.msg( 'visualeditor-serializeerror', status ) );
this.saveDialog.$loadingIcon.hide();
};
/**
* Handle edit conflict event.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onEditConflict = function () {
this.saveDialog.$loadingIcon.hide();
this.saveDialog.swapPanel( 'conflict' );
};
/**
* Handle failed show changes event.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onNoChanges = function () {
this.saveDialog.$loadingIcon.hide();
this.saveDialog.swapPanel( 'nochanges' );
this.saveDialog.reviewGoodButton.setDisabled( false );
};
/**
* Handle clicks on the view tab.
*
* @method
* @param {jQuery.Event} e Mouse click event
*/
ve.init.mw.ViewPageTarget.prototype.onViewTabClick = function ( e ) {
if ( ( e.which && e.which !== 1 ) || e.shiftKey || e.altKey || e.ctrlKey || e.metaKey ) {
return;
}
if ( this.active ) {
this.deactivate();
// Prevent the edit tab's normal behavior
e.preventDefault();
} else if ( this.activating ) {
this.deactivate( true );
this.activating = false;
e.preventDefault();
}
};
/**
* Handle clicks on the save button in the toolbar.
*
* @method
* @param {jQuery.Event} e Mouse click event
*/
ve.init.mw.ViewPageTarget.prototype.onToolbarSaveButtonClick = function () {
if ( this.edited || this.restoring ) {
this.showSaveDialog();
}
};
/**
* Handle clicks on the save button in the toolbar.
*
* @method
* @param {jQuery.Event} e Mouse click event
*/
ve.init.mw.ViewPageTarget.prototype.onToolbarCancelButtonClick = function () {
this.deactivate();
};
/**
* Handle clicks on the MwMeta button in the toolbar.
*
* @method
* @param {jQuery.Event} e Mouse click event
*/
ve.init.mw.ViewPageTarget.prototype.onToolbarMetaButtonClick = function () {
this.surface.getDialogs().open( 'meta' );
};
/**
* Clear the diff in the save dialog.
*
* This method is bound to the 'transact' event on the document model, and unbinds itself the first
* time it runs. It's bound when the surface is set up and rebound every time a diff is loaded into
* the save dialog.
*
* @method
* @param {ve.dm.Transaction} tx Processed transaction
*/
ve.init.mw.ViewPageTarget.prototype.clearSaveDialogDiff = function () {
// Clear the diff
this.saveDialog.$reviewViewer.empty();
this.surface.getModel().getDocument().disconnect( this, { 'transact': 'clearSaveDialogDiff' } );
};
/**
* Check if the user is entering wikitext, and show a notification if they are.
*
* This check is fairly simplistic: it checks whether the content branch node the selection is in
* looks like wikitext, so it can trigger if the user types in a paragraph that has pre-existing
* wikitext-like content.
*
* This method is bound to the 'documentUpdate' event on the surface model, and unbinds itself when
* the wikitext notification is displayed.
*
* @param {ve.dm.Transaction} transaction
*/
ve.init.mw.ViewPageTarget.prototype.checkForWikitextWarning = function () {
var text, doc = this.surface.getView().getDocument(),
selection = this.surface.getModel().getSelection(),
node = doc.getNodeFromOffset( selection.start );
if ( !( node instanceof ve.ce.ContentBranchNode ) ) {
return;
}
text = ve.ce.getDomText( node.$[0] );
if ( text.match( /\[\[|\{\{|''|<nowiki|~~~|^==|^\*|^\#/ ) ) {
mw.notify(
$( $.parseHTML( ve.init.platform.getParsedMessage( 'visualeditor-wikitext-warning' ) ) )
.filter( 'a' ).attr( 'target', '_blank ' ).end(),
{
'title': ve.msg( 'visualeditor-wikitext-warning-title' ),
'tag': 'visualeditor-wikitext-warning',
'autoHide': false
}
);
this.surface.getModel().disconnect(
this, { 'documentUpdate': 'checkForWikitextWarning' }
);
}
};
/**
* Re-evaluate whether the toolbar save button should be disabled or not.
*/
ve.init.mw.ViewPageTarget.prototype.updateToolbarSaveButtonState = function () {
this.edited = this.surface.getModel().hasPastState();
// Disable the save button if we have no history or if the sanity check is not finished
this.toolbarSaveButton.setDisabled( ( !this.edited && !this.restoring ) || !this.sanityCheckFinished );
this.toolbarSaveButton.$.toggleClass( 've-init-mw-viewPageTarget-waiting', !this.sanityCheckFinished );
};
/**
* Handle clicks on the review button in the save dialog.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onSaveDialogReview = function () {
var doc = this.surface.getModel().getDocument();
this.sanityCheckVerified = true;
this.saveDialog.setSanityCheck( this.sanityCheckVerified );
if ( !this.saveDialog.$reviewViewer.find( 'table, pre' ).length ) {
this.saveDialog.reviewGoodButton.setDisabled( true );
this.saveDialog.$loadingIcon.show();
if ( this.pageExists ) {
// Has no callback, handled via target.onShowChanges
this.showChanges(
ve.dm.converter.getDomFromData( doc.getFullData(), doc.getStore(), doc.getInternalList(), doc.getInnerWhitespace() )
);
} else {
this.serialize(
ve.dm.converter.getDomFromData( doc.getFullData(), doc.getStore(), doc.getInternalList(), doc.getInnerWhitespace() ),
ve.bind( this.onSerialize, this )
);
}
} else {
this.saveDialog.swapPanel( 'review' );
}
};
/**
* Handle clicks on the save button in the save dialog.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onSaveDialogSave = function () {
this.saveDocument();
};
/**
* Try to save the current document.
*/
ve.init.mw.ViewPageTarget.prototype.saveDocument = function () {
var doc = this.surface.getModel().getDocument(),
saveOptions = this.getSaveOptions();
// Reset any old captcha data
if ( this.captcha ) {
this.saveDialog.clearMessage( 'captcha' );
delete this.captcha;
}
if (
+mw.user.options.get( 'forceeditsummary' ) &&
saveOptions.summary === '' &&
!this.saveDialog.messages.missingsummary
) {
this.saveDialog.showMessage(
'missingsummary',
// Wrap manually since this core message already includes a bold "Warning:" label
$( '<p>' ).append( ve.init.platform.getParsedMessage( 'missingsummary' ) ),
{ wrap: false }
);
} else {
this.saveDialog.saveButton.setDisabled( true );
this.saveDialog.$loadingIcon.show();
this.save(
ve.dm.converter.getDomFromData( doc.getFullData(), doc.getStore(), doc.getInternalList(), doc.getInnerWhitespace() ),
saveOptions
);
}
};
/**
* Handle clicks on the resolve conflict button in the conflict dialog.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onSaveDialogResolveConflict= function () {
var doc = this.surface.getModel().getDocument();
// Get Wikitext from the DOM, and set up a submit call when it's done
this.serialize(
ve.dm.converter.getDomFromData( doc.getFullData(), doc.getStore(), doc.getInternalList() ),
ve.bind( function ( wikitext ) {
this.submit( wikitext, this.getSaveOptions() );
}, this )
);
};
/**
* Get save options from the save dialog form.
*
* @method
* @returns {Object} Save options, including summary, minor and watch properties
*/
ve.init.mw.ViewPageTarget.prototype.getSaveOptions = function () {
var options = {
'summary': this.saveDialog.editSummaryInput.$input.val(),
'captchaid': this.captcha && this.captcha.id,
'captchaword': this.captcha && this.captcha.input.getValue()
};
if ( this.sanityCheckPromise.state() === 'rejected' ) {
options.needcheck = 1;
}
if ( this.saveDialog.$saveOptions.find( '#wpMinoredit' ).prop( 'checked' ) ) {
options.minor = 1;
}
if ( this.saveDialog.$saveOptions.find( '#wpWatchthis' ).prop( 'checked' ) ) {
options.watch = 1;
}
this.saveDialog.$saveOptions
.find( '.ve-ui-mwSaveDialog-checkboxes' )
.find( 'input:not(#wpMinoredit, #wpWatchthis)' )
.each( function () {
var $this = $( this );
// We can't just use $this.val() because .val() always returns the value attribute of
// a checkbox even when it's unchecked
if ( $this.prop( 'type') !== 'checkbox' || $this.prop( 'checked' ) ) {
options[$this.prop( 'name' )] = $this.val();
}
} );
return options;
};
/**
* Switch to editing mode.
*
* @method
* @param {HTMLDocument} doc HTML DOM to edit
* @param {Function} [callback] Callback to call when done
*/
ve.init.mw.ViewPageTarget.prototype.setUpSurface = function ( doc, callback ) {
var target = this;
setTimeout( function () {
// Build linmod
var store = new ve.dm.IndexValueStore(),
internalList = new ve.dm.InternalList(),
innerWhitespace = new Array( 2 ),
data = ve.dm.converter.getDataFromDom( doc, store, internalList, innerWhitespace );
setTimeout( function () {
// Build DM tree
var dmDoc = new ve.dm.Document( data, doc, undefined, internalList, innerWhitespace );
setTimeout( function () {
// Create ui.Surface (also creates ce.Surface and dm.Surface and builds CE tree)
target.surface = new ve.ui.Surface( dmDoc, target.surfaceOptions );
target.surface.$.addClass( 've-init-mw-viewPageTarget-surface' );
setTimeout( function () {
// Initialize surface
target.surface.getContext().hide();
target.$document = target.surface.$.find( '.ve-ce-documentNode' );
target.surface.getModel().getDocument().connect( target, {
'transact': 'clearSaveDialogDiff'
} );
target.surface.getModel().connect( target, {
'documentUpdate': 'checkForWikitextWarning',
'history': 'updateToolbarSaveButtonState'
} );
target.$.append( target.surface.$ );
target.setUpToolbar();
target.transformPageTitle();
target.changeDocumentTitle();
// Update UI
target.hidePageContent();
target.hideSpinner();
target.active = true;
target.$document.attr( {
'lang': mw.config.get( 'wgVisualEditor' ).pageLanguageCode,
'dir': mw.config.get( 'wgVisualEditor' ).pageLanguageDir
} );
// Add appropriately mw-content-ltr or mw-content-rtl class
target.surface.view.$.addClass(
'mw-content-' + mw.config.get( 'wgVisualEditor' ).pageLanguageDir
);
// Now that the surface is attached to the document and ready,
// let it initialize itself
target.surface.initialize();
setTimeout( callback );
} );
} );
} );
} );
};
/**
* Fire off the sanity check. Must be called before the surface is activated.
*
* To access the result, check whether #sanityCheckPromise has been resolved or rejected
* (it's asynchronous, so it may still be pending when you check).
*/
ve.init.mw.ViewPageTarget.prototype.startSanityCheck = function () {
// We have to get a copy of the data now, before we unlock the surface and let the user edit,
// but we can defer the actual conversion and comparison
var viewPage = this,
doc = viewPage.surface.getModel().getDocument(),
data = new ve.dm.FlatLinearData( doc.getStore().clone(), ve.copy( doc.getFullData() ) ),
oldDom = viewPage.doc,
d = $.Deferred();
// Reset
viewPage.sanityCheckFinished = false;
viewPage.sanityCheckVerified = false;
setTimeout( function () {
// We can't compare oldDom.body and newDom.body directly, because the attributes on the
// <body> were ignored in the conversion. So compare each child separately.
var i,
len = oldDom.body.childNodes.length,
newDoc = new ve.dm.Document( data, oldDom, undefined, doc.getInternalList(), doc.getInnerWhitespace() ),
newDom = ve.dm.converter.getDomFromData( newDoc.getFullData(), newDoc.getStore(), newDoc.getInternalList(), newDoc.getInnerWhitespace() );
// Explicitly unlink our full copy of the original version of the document data
data = undefined;
if ( len !== newDom.body.childNodes.length ) {
// Different number of children, so they're definitely different
d.reject();
return;
}
for ( i = 0; i < len; i++ ) {
if ( !oldDom.body.childNodes[i].isEqualNode( newDom.body.childNodes[i] ) ) {
d.reject();
return;
}
}
d.resolve();
} );
viewPage.sanityCheckPromise = d.promise()
.done( function () {
// If we detect no roundtrip errors,
// don't emphasize "review changes" to the user.
viewPage.sanityCheckVerified = true;
})
.always( function () {
viewPage.sanityCheckFinished = true;
viewPage.updateToolbarSaveButtonState();
} );
};
/**
* @see ve.ui.SurfaceToolbar#position
* @param {jQuery} $bar
* @param {Object} update
*/
ve.init.mw.ViewPageTarget.prototype.onToolbarPosition = function ( $bar, update ) {
// It's important that the toolbar tracker always has 0 height, otherwise it will block events
// on the toolbar (e.g. clicking "Save page") as it would overlap that space. The save dialog
// will remain visible for the same reason elsewhere: As long as we don't have overflow:hidden,
// the save dialog will stick out of the tracker in the right place without the tracker itself
// blocking the toolbar.
if ( !this.toolbarTrackerFloating && update.floating === true ) {
// When switching to floating, undo the 'top' position set earlier
this.$toolbarTracker.css( 'top', '' );
}
if ( update.offset ) {
this.toolbarOffset = update.offset;
}
if ( typeof update.floating === 'boolean' ) {
this.$toolbarTracker.toggleClass(
've-init-mw-viewPageTarget-toolbarTracker-floating',
update.floating
);
this.toolbarTrackerFloating = update.floating;
}
// Switching to non-floating or offset update when already in non-floating
if ( update.floating === false || this.toolbarTrackerFloating === false && update.offset ) {
// Don't use update.css in this case since the toolbar is now in its non-floating
// position (static, in-flow). So make the tracker absolutely postioned matching the
// offset of the toolbar.
this.$toolbarTracker.css( {
'top': this.toolbarOffset.top,
'left': this.toolbarOffset.left,
'right': this.toolbarOffset.right
} );
} else if ( update.css ) {
this.$toolbarTracker.css( update.css );
}
};
/**
* Switch to viewing mode.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.tearDownSurface = function () {
// Update UI
if ( this.$document ) {
this.$document.blur();
this.$document = null;
}
this.tearDownToolbar();
this.restoreDocumentTitle();
// Destroy surface
if ( this.surface ) {
this.surface.destroy();
this.surface = null;
}
this.active = false;
};
/**
* Modify tabs in the skin to support in-place editing.
* Edit tab is bound outside the module in mw.ViewPageTarget.init.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.setupSkinTabs = function () {
if ( this.isViewPage ) {
// Allow instant switching back to view mode, without refresh
$( '#ca-view a, #ca-nstab-visualeditor a' )
.click( ve.bind( this.onViewTabClick, this ) );
}
mw.hook( 've.skinTabSetupComplete' ).fire();
};
/**
* Modify page content to make section edit links activate the editor.
* Dummy replaced by init.js so that we can call it again from #onSave after
* replacing the page contents with the new html.
*/
ve.init.mw.ViewPageTarget.prototype.setupSectionEditLinks = null;
/**
* Add content and event bindings to toolbar buttons.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.setupToolbarButtons = function () {
this.toolbarCancelButton = new OO.ui.PushButtonWidget( { 'label': ve.msg( 'visualeditor-toolbar-cancel' ) } );
this.toolbarCancelButton.$.addClass( 've-ui-toolbar-cancelButton' );
this.toolbarSaveButton = new OO.ui.PushButtonWidget( {
'label': ve.msg( 'visualeditor-toolbar-savedialog' ),
'flags': ['constructive'],
'disabled': !this.restoring
} );
// TODO (mattflaschen, 2013-06-27): it would be useful to do this in a more general way, such
// as in the ButtonWidget constructor.
this.toolbarSaveButton.$.addClass( 've-ui-toolbar-saveButton' );
this.updateToolbarSaveButtonState();
this.toolbarCancelButton.connect( this, { 'click': 'onToolbarCancelButtonClick' } );
this.toolbarSaveButton.connect( this, { 'click': 'onToolbarSaveButtonClick' } );
};
/**
* Remove content and event bindings from toolbar buttons.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.tearDownToolbarButtons = function () {
this.toolbarCancelButton.disconnect( this );
this.toolbarSaveButton.disconnect( this );
};
/**
* Add the save button to the user interface.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.attachToolbarButtons = function () {
var $actionTools = $( '<div>' ),
$pushButtons = $( '<div>' ),
actions = new ve.ui.TargetToolbar( this, this.surface );
actions.setup( [
{ 'include': [ 'help', 'notices' ] },
{
'type': 'list',
'icon': 'menu',
'include': [ 'meta', 'categories', 'languages' ] }
] );
$actionTools
.addClass( 've-init-mw-viewPageTarget-toolbar-utilites' )
.append( actions.$ );
$pushButtons
.addClass( 've-init-mw-viewPageTarget-toolbar-actions' )
.append(
this.toolbarCancelButton.$,
this.toolbarSaveButton.$
);
this.toolbar.$actions.append( $actionTools, $pushButtons );
};
/**
* Remove the save button from the user interface.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.detachToolbarButtons = function () {
this.toolbarCancelButton.$.detach();
this.toolbarSaveButton.$.detach();
this.toolbar.$actions.empty();
};
/**
* Add content and event bindings to the save dialog.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.setupSaveDialog = function () {
var sectionTitle = '', viewPage = this;
viewPage.saveDialog = this.surface.getDialogs().getWindow( 'mwSave' );
if ( viewPage.section ) {
sectionTitle = viewPage.$document.find( 'h1, h2, h3, h4, h5, h6' ).eq( viewPage.section - 1 ).text();
sectionTitle = '/* ' + ve.graphemeSafeSubstring( sectionTitle, 0, 244 ) + ' */ ';
viewPage.saveDialog.editSummaryInput.$input.val( sectionTitle );
viewPage.sectionTitleRestored = true;
if ( viewPage.sectionPositionRestored ) {
viewPage.onSectionRestored();
}
}
// Connect to save dialog
viewPage.saveDialog.connect( this, {
'save': 'onSaveDialogSave',
'review': 'onSaveDialogReview',
'resolve': 'onSaveDialogResolveConflict'
} );
// Setup checkboxes
viewPage.saveDialog.setupCheckboxes( ve.getObjectValues( viewPage.checkboxes ).join( '\n' ) );
};
/**
* Show the save dialog.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.showSaveDialog = function () {
this.saveDialog.setSanityCheck( this.sanityCheckVerified );
this.saveDialog.swapPanel( 'save' );
this.surface.getDialogs().open( 'mwSave' );
};
/**
* Remember the window's scroll position.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.saveScrollPosition = function () {
this.scrollTop = $( window ).scrollTop();
};
/**
* Restore the window's scroll position.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.restoreScrollPosition = function () {
if ( this.scrollTop ) {
$( window ).scrollTop( this.scrollTop );
this.scrollTop = null;
}
};
/**
* Show the loading spinner.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.showSpinner = function () {
$( '#firstHeading' ).prepend( this.$spinner );
};
/**
* Hide the loading spinner.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.hideSpinner = function () {
this.$spinner.detach();
};
/**
* Show the page content.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.showPageContent = function () {
$( '#bodyContent > .ve-init-mw-viewPageTarget-content' )
.removeClass( 've-init-mw-viewPageTarget-content' )
.show()
.fadeTo( 0, 1 );
};
/**
* Mute the page content.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.mutePageContent = function () {
$( '#bodyContent > :visible:not(#siteSub, #contentSub)' )
.addClass( 've-init-mw-viewPageTarget-content' )
.fadeTo( 'fast', 0.6 );
};
/**
* Hide the page content.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.hidePageContent = function () {
$( '#bodyContent > :visible:not(#siteSub, #contentSub)' )
.addClass( 've-init-mw-viewPageTarget-content' )
.hide();
};
/**
* Show the table of contents in the view mode.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.showTableOfContents = function () {
var $toc = $( '#toc' ),
$wrap = $toc.parent();
if ( $wrap.data( 've.hideTableOfContents' ) ) {
$wrap.slideDown( function () {
$toc.unwrap();
} );
}
};
/**
* Hide the table of contents in the view mode.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.hideTableOfContents = function () {
$( '#toc' )
.wrap( '<div>' )
.parent()
.data( 've.hideTableOfContents', true )
.slideUp();
};
/**
* Show the toolbar.
*
* This also transplants the toolbar to a new location.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.setUpToolbar = function () {
this.toolbar = new ve.ui.TargetToolbar( this, this.surface, { 'shadow': true, 'actions': true } );
this.toolbar.connect( this, { 'position': 'onToolbarPosition' } );
this.toolbar.setup( this.constructor.static.toolbarGroups );
this.surface.addCommands( this.constructor.static.surfaceCommands );
if ( !this.isMobileDevice ) {
this.toolbar.enableFloatable();
}
this.toolbar.$
.addClass( 've-init-mw-viewPageTarget-toolbar' )
.insertBefore( '#firstHeading' );
this.toolbar.$bar.slideDown( 'fast', ve.bind( function () {
// Check the surface wasn't torn down while the toolbar was animating
if ( this.surface ) {
this.toolbar.initialize();
this.surface.emit( 'position' );
this.surface.getContext().update();
}
}, this ) );
};
/**
* Hide the toolbar.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.tearDownToolbar = function () {
this.toolbar.$bar.slideUp( 'fast', ve.bind( function () {
this.toolbar.destroy();
this.toolbar = null;
}, this ) );
};
/**
* Transform the page title into a VE-style title.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.transformPageTitle = function () {
$( '#firstHeading' ).addClass( 've-init-mw-viewPageTarget-pageTitle' );
};
/**
* Fade the page title to indicate it is not editable.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.mutePageTitle = function () {
$( '#firstHeading, #siteSub' )
.addClass( 've-init-mw-viewPageTarget-transform ve-init-mw-viewPageTarget-transform-muted' );
$( '#contentSub' )
.addClass( 've-init-mw-viewPageTarget-transform ve-init-mw-viewPageTarget-transform-hidden' );
};
/**
* Restore the page title to its original style.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.restorePageTitle = function () {
var $els = $( '#firstHeading, #siteSub, #contentSub' )
.removeClass( 've-init-mw-viewPageTarget-transform-muted ve-init-mw-viewPageTarget-transform-hidden' );
setTimeout( function () {
$els.removeClass( 've-init-mw-viewPageTarget-transform' );
$( '#firstHeading' ).removeClass( 've-init-mw-viewPageTarget-pageTitle' );
}, 1000 );
};
/**
* Change the document title to state that we are now editing.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.changeDocumentTitle = function () {
document.title = ve.msg(
this.pageExists ? 'editing' : 'creating',
mw.config.get( 'wgTitle' )
) + ' - ' + mw.config.get( 'wgSiteName' );
};
/**
* Restore the original document title.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.restoreDocumentTitle = function () {
document.title = this.originalDocumentTitle;
};
/**
* Page modifications for switching to edit mode.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.transformPage = function () {
var uri;
// Put skin tabs in "edit" mode
$( $( '#p-views' ).length ? '#p-views' : '#p-cactions' )
.find( 'li.selected' ).removeClass( 'selected' );
$( '#ca-ve-edit' )
.addClass( 'selected' );
// Hide site notice (if present)
$( '#siteNotice:visible' )
.addClass( 've-hide' )
.slideUp( 'fast' );
// Push veaction=edit url in history (if not already. If we got here by a veaction=edit
// permalink then it will be there already and the constructor called #activate)
if ( !this.actFromPopState && window.history.pushState && this.currentUri.query.veaction !== 'edit' ) {
// Set the veaction query parameter
uri = this.currentUri;
uri.query.veaction = 'edit';
window.history.pushState( null, document.title, uri );
}
this.actFromPopState = false;
};
/**
* Page modifications for switching back to view mode.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.restorePage = function () {
var uri;
// Put skin tabs back in "view" mode
$( $( '#p-views' ).length ? '#p-views' : '#p-cactions' )
.find( 'li.selected' ).removeClass( 'selected' );
$( '#ca-view' ).addClass( 'selected' );
// Make site notice visible again (if present)
$( '#siteNotice.ve-hide' )
.slideDown( 'fast' );
// Push non-veaction=edit url in history
if ( !this.actFromPopState && window.history.pushState ) {
// Remove the veaction query parameter
uri = this.currentUri;
if ( 'veaction' in uri.query ) {
delete uri.query.veaction;
}
// If there are other query parameters, set the url to the current url (with veaction removed).
// Otherwise use the canonical style view url (bug 42553).
if ( ve.getObjectValues( uri.query ).length ) {
window.history.pushState( null, document.title, uri );
} else {
window.history.pushState( null, document.title, this.viewUri );
}
}
this.actFromPopState = false;
};
/**
* @param {Event} e Native event object
*/
ve.init.mw.ViewPageTarget.prototype.onWindowPopState = function () {
var newUri = this.currentUri = new mw.Uri( document.location.href );
if ( !this.active && newUri.query.veaction === 'edit' ) {
this.actFromPopState = true;
this.activate();
}
if ( this.active && newUri.query.veaction !== 'edit' ) {
this.actFromPopState = true;
this.deactivate();
}
};
/**
* Replace the page content with new HTML.
*
* @method
* @param {HTMLElement} html Rendered HTML from server
*/
ve.init.mw.ViewPageTarget.prototype.replacePageContent = function ( html ) {
var $content = $( $.parseHTML( html ) );
mw.hook( 'wikipage.content' ).fire( $( '#mw-content-text' ).empty().append( $content ) );
};
/**
* Get the numeric index of a section in the page.
*
* @method
* @param {HTMLElement} heading Heading element of section
*/
ve.init.mw.ViewPageTarget.prototype.getEditSection = function ( heading ) {
var $page = $( '#mw-content-text' ),
section = 0;
$page.find( 'h1, h2, h3, h4, h5, h6' ).not( '#toc h2' ).each( function () {
section++;
if ( this === heading ) {
return false;
}
} );
return section;
};
/**
* Store the section for which the edit link has been triggered.
*
* @method
* @param {HTMLElement} heading Heading element of section
*/
ve.init.mw.ViewPageTarget.prototype.saveEditSection = function ( heading ) {
this.section = this.getEditSection( heading );
};
/**
* Move the cursor in the editor to a given section.
*
* @method
* @param {number} section Section to move cursor to
*/
ve.init.mw.ViewPageTarget.prototype.restoreEditSection = function () {
if ( this.section !== null ) {
var offset,
target = this,
surfaceView = this.surface.getView(),
surfaceModel = surfaceView.getModel();
this.$document.find( 'h1, h2, h3, h4, h5, h6' ).eq( this.section - 1 ).each( function () {
var offsetNode, nextNode,
headingNode = $( this ).data( 'view' ),
lastHeadingLevel = -1;
if ( headingNode ) {
// Find next sibling which isn't a heading
offsetNode = headingNode;
while ( offsetNode instanceof ve.ce.HeadingNode && offsetNode.getModel().getAttribute( 'level' ) > lastHeadingLevel ) {
lastHeadingLevel = offsetNode.getModel().getAttribute( 'level' );
// Next sibling
nextNode = offsetNode.parent.children[ve.indexOf( offsetNode, offsetNode.parent.children ) + 1];
if ( !nextNode ) {
break;
}
offsetNode = nextNode;
}
offset = surfaceModel.getDocument().data.getNearestContentOffset(
offsetNode.getModel().getOffset(), 1
);
surfaceModel.setSelection( new ve.Range( offset ) );
// Scroll to heading:
// Wait for toolbar to animate in so we can account for its height
setTimeout( function () {
var $window = $( OO.ui.Element.getWindow( target.$ ) );
$window.scrollTop( headingNode.$.offset().top - target.toolbar.$.height() );
}, 200 );
}
} );
this.sectionPositionRestored = true;
if ( this.sectionTitleRestored ) {
this.onSectionRestored();
}
}
};
/**
* Handle restoration of section editing position and title
*/
ve.init.mw.ViewPageTarget.prototype.onSectionRestored = function () {
this.section = null;
this.sectionPositionRestored = false;
this.sectionTitleRestored = false;
};
/**
* Add onbeforunload handler.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.setupBeforeUnloadHandler = function () {
// Remember any already set on before unload handler
this.onBeforeUnloadFallback = window.onbeforeunload;
// Attach before unload handler
window.onbeforeunload = this.onBeforeUnloadHandler = ve.bind( this.onBeforeUnload, this );
// Attach page show handlers
if ( window.addEventListener ) {
window.addEventListener( 'pageshow', ve.bind( this.onPageShow, this ), false );
} else if ( window.attachEvent ) {
window.attachEvent( 'pageshow', ve.bind( this.onPageShow, this ) );
}
};
/**
* Remove onbeforunload handler.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.tearDownBeforeUnloadHandler = function () {
// Restore whatever previous onbeforeload hook existed
window.onbeforeunload = this.onBeforeUnloadFallback;
};
/**
* Show beta welcome dialog if first load.
*/
ve.init.mw.ViewPageTarget.prototype.showBetaWelcome = function () {
if ( $.cookie( 've-beta-welcome-dialog' ) === null ) {
this.surface.getDialogs().open( 'betaWelcome' );
}
$.cookie( 've-beta-welcome-dialog', 1, { 'path': '/', 'expires': 30 } );
};
/**
* Handle page show event.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onPageShow = function () {
// Re-add onbeforeunload handler
window.onbeforeunload = this.onBeforeUnloadHandler;
};
/**
* Handle before unload event.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onBeforeUnload = function () {
var fallbackResult,
message,
onBeforeUnloadHandler = this.onBeforeUnloadHandler;
// Check if someone already set on onbeforeunload hook
if ( this.onBeforeUnloadFallback ) {
// Get the result of their onbeforeunload hook
fallbackResult = this.onBeforeUnloadFallback();
}
// Check if their onbeforeunload hook returned something
if ( fallbackResult !== undefined ) {
// Exit here, returning their message
message = fallbackResult;
} else {
// Override if submitting
if ( this.submitting ) {
return null;
}
// Check if there's been an edit
if ( this.surface && this.edited ) {
// Return our message
message = ve.msg( 'visualeditor-viewpage-savewarning' );
}
}
// Unset the onbeforeunload handler so we don't break page caching in Firefox
window.onbeforeunload = null;
if ( message !== undefined ) {
// ...but if the user chooses not to leave the page, we need to rebind it
setTimeout( function () {
window.onbeforeunload = onBeforeUnloadHandler;
} );
return message;
}
};