mediawiki-extensions-Visual.../modules/ve-mw/init/targets/ve.init.mw.ViewPageTarget.js
Timo Tijhof ad2fdfb66b ve.init.mw.ViewPageTarget: Actually animate the toolbar during setup
There was a slideDown() call, but this didn't do anything since
toolbars are visible and in the DOM by default.

As a temporary hack, hide it synchronously after creation and
then do the slideDown still.

This could ever so briefly cause a flash, though that didn't
happen in my testing.

This makes the experience smoother when we initialise the surface.
In particular the moment where we swap #bodyContent for our Surface
(which should look visually almost identical), before this change
it was still a bit of a flash since the Surface version has a
toolbar on top, and thus instead of swapping smoothly, we hide
content and show a similar piece of content that has an incompatible
offset from the top.

Bug: 64751
Change-Id: Id94974ba71fd887ce494d7b2b16ec62d43b18575
2014-05-06 02:43:37 +00:00

1624 lines
46 KiB
JavaScript

/*!
* VisualEditor MediaWiki Initialization ViewPageTarget class.
*
* @copyright 2011-2014 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 prefName,
prefValue,
browserWhitelisted,
currentUri = new mw.Uri(),
conf = mw.config.get( 'wgVisualEditorConfig' );
// Parent constructor
ve.init.mw.Target.call(
this, $( '#content' ),
mw.config.get( 'wgRelevantPageName' ),
currentUri.query.oldid
);
// Properties
this.$spinner = $( '<div class="ve-init-mw-viewPageTarget-loading"></div>' );
this.toolbarCancelButton = null;
this.toolbarSaveButton = null;
this.saveDialog = null;
this.onBeforeUnloadFallback = null;
this.onBeforeUnloadHandler = null;
this.active = false;
this.activating = false;
this.deactivating = false;
this.edited = 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.popState = {
tag: 'visualeditor'
};
this.scrollTop = null;
this.currentUri = currentUri;
this.section = currentUri.query.vesection;
this.initialEditSummary = '';
this.namespaceName = mw.config.get( 'wgCanonicalNamespace' );
this.viewUri = new mw.Uri( mw.util.getUrl( 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.tabLayout = mw.config.get( 'wgVisualEditorConfig' ).tabLayout;
/**
* @property {jQuery.Promise|null}
*/
this.sanityCheckPromise = null;
// Add modules specific to desktop (modules shared with mobile go in MWTarget)
this.modules.push(
'ext.visualEditor.mwformatting',
'ext.visualEditor.mwgallery',
'ext.visualEditor.mwimage',
'ext.visualEditor.mwmeta',
'ext.visualEditor.mwtransclusion'
);
// Load preference modules
for ( prefName in conf.preferenceModules ) {
prefValue = mw.config.get( 'wgUserName' ) === null ?
conf.defaultUserOptions[prefName] :
mw.user.options.get( prefName, conf.defaultUserOptions[prefName] );
if ( prefValue && prefValue !== '0' ) {
this.modules.push( conf.preferenceModules[prefName] );
}
}
browserWhitelisted = (
'vewhitelist' in currentUri.query ||
$.client.test( ve.init.mw.ViewPageTarget.compatibility.whitelist, null, true )
);
// Events
this.connect( this, {
'save': 'onSave',
'saveErrorEmpty': 'onSaveErrorEmpty',
'saveAsyncBegin': 'onSaveAsyncBegin',
'saveAsyncComplete': 'onSaveAsyncComplete',
'saveErrorSpamBlacklist': 'onSaveErrorSpamBlacklist',
'saveErrorAbuseFilter': 'onSaveErrorAbuseFilter',
'saveErrorBadToken': 'onSaveErrorBadToken',
'saveErrorNewUser': 'onSaveErrorNewUser',
'saveErrorCaptcha': 'onSaveErrorCaptcha',
'saveErrorUnknown': 'onSaveErrorUnknown',
'loadError': 'onLoadError',
'surfaceReady': 'onSurfaceReady',
'editConflict': 'onEditConflict',
'showChanges': 'onShowChanges',
'showChangesError': 'onShowChangesError',
'noChanges': 'onNoChanges',
'serializeError': 'onSerializeError',
'sanityCheckComplete': 'updateToolbarSaveButtonState'
} );
if ( mw.config.get( 'wgTranslatePageTranslation' ) === 'source' ) {
// Warn users if they're on a source of the Page Translation feature
this.localNoticeMessages.push( 'visualeditor-pagetranslationwarning' );
}
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:
// postedit-confirmation-saved
// postedit-confirmation-created
// postedit-confirmation-restored
mw.hook( 'postEdit' ).fire( {
'message':
ve.msg( 'postedit-confirmation-' + currentUri.query.venotify, mw.user )
} );
delete currentUri.query.venotify;
}
if ( window.history.replaceState ) {
// This is to stop the back button breaking when it's supposed to take us back out
// of VE. It used to only be called when venotify is used. FIXME: there should be
// a much better solution than this.
window.history.replaceState( this.popState, 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]]
}
};
/* Events */
/**
* @event saveWorkflowBegin
* Fired when user enters the save workflow
*/
/**
* @event saveWorkflowEnd
* Fired when user exits the save workflow
*/
/**
* @event saveReview
* Fired when user initiates review changes in save workflow
*/
/**
* @event saveInitiated
* Fired when user initiates saving of the document
*/
/* Methods */
/**
* Verify that a PopStateEvent correlates to a state we created.
*
* @param {Mixed} popState From PopStateEvent#state
* @return {boolean}
*/
ve.init.mw.ViewPageTarget.prototype.verifyPopState = function ( popState ) {
return popState && popState.tag === 'visualeditor';
};
/**
* @inheritdoc
*/
ve.init.mw.ViewPageTarget.prototype.setUpToolbar = function () {
var $firstHeading;
// Parent method
ve.init.mw.Target.prototype.setUpToolbar.call( this );
// Keep it hidden so that we can slide it down smoothly (avoids sudden
// offset flash when original content is hidden, and replaced in-place with a
// similar-looking surface).
// FIXME: This is not ideal, the parent class creates it and appends
// to target (visibly), only for us to hide it again 0ms later.
// Though we can't hide it by default because it needs visible dimensions
// to compute stuff during setup.
this.toolbar.$bar.hide();
this.toolbar.enableFloatable();
this.toolbar.$element
.addClass( 've-init-mw-viewPageTarget-toolbar' );
// Move the toolbar to before #firstHeading if it exists
$firstHeading = $( '#firstHeading' );
if ( $firstHeading.length ) {
this.toolbar.$element.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 ) );
};
/**
* 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.hideReadOnlyContent();
this.mutePageContent();
this.mutePageTitle();
this.saveScrollPosition();
this.load( [ 'site', 'user' ] );
}
};
/**
* 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
if ( this.elementsThatHadOurAccessKey ) {
this.elementsThatHadOurAccessKey.attr( 'accesskey', ve.msg( 'accesskey-save' ) );
}
this.restorePage();
this.hideSpinner();
this.showReadOnlyContent();
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();
}
// 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.clearState();
this.docToSave = null;
this.initialEditSummary = '';
this.deactivating = false;
mw.hook( 've.deactivationComplete' ).fire( this.edited );
}
}
};
/**
* Handle failed DOM load event.
*
* @method
* @param {jqXHR|null} jqXHR jQuery XHR object
* @param {string} status Text status message
* @param {Mixed|null} error Thrown exception or HTTP error string
*/
ve.init.mw.ViewPageTarget.prototype.onLoadError = function ( jqXHR, status ) {
// Don't show an error if the load was manually aborted
// The response.status check here is to catch aborts triggered by navigation away from the page
if (
status !== 'abort' &&
( !jqXHR || ( jqXHR.status !== 0 && jqXHR.status !== 504 ) ) &&
confirm( ve.msg( 'visualeditor-loadwarning', status ) )
) {
this.load();
} else if (
jqXHR && jqXHR.status === 504 &&
confirm( ve.msg( 'visualeditor-timeout' ) )
) {
if ( 'veaction' in this.currentUri.query ) {
delete this.currentUri.query.veaction;
}
this.currentUri.query.action = 'edit';
window.location.href = this.currentUri.toString();
} else {
this.activating = false;
// User interface changes
this.deactivate( true );
}
};
/**
* Once surface is ready ready, init UI
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onSurfaceReady = function () {
this.activating = false;
this.surface.getModel().connect( this, {
'documentUpdate': 'checkForWikitextWarning',
'history': 'updateToolbarSaveButtonState'
} );
this.surface.setPasteRules( this.constructor.static.pasteRules );
// TODO: mwTocWidget should probably live in a ve.ui.MWSurface subclass
if ( mw.config.get( 'wgVisualEditorConfig' ).enableTocWidget ) {
this.surface.mwTocWidget = new ve.ui.MWTocWidget( this.surface );
}
// Update UI
this.transformPageTitle();
this.changeDocumentTitle();
this.hidePageContent();
this.hideSpinner();
this.$document[0].focus();
this.setupToolbarButtons();
this.attachToolbarButtons();
this.restoreScrollPosition();
this.restoreEditSection();
this.setupBeforeUnloadHandler();
this.maybeShowDialogs();
mw.hook( 've.activationComplete' ).fire();
};
/**
* Handle successful DOM save event.
*
* @method
* @param {string} html Rendered page HTML from server
* @param {string} categoriesHtml Rendered categories HTML from server
* @param {number} [newid] New revision id, undefined if unchanged
*/
ve.init.mw.ViewPageTarget.prototype.onSave = function ( html, categoriesHtml, newid ) {
if ( !this.pageExists || this.restoring ) {
// This is a page creation or restoration, refresh the page
this.tearDownBeforeUnloadHandler();
window.location.href = this.viewUri.extend( {
'venotify': this.restoring ? 'restored' : 'created'
} );
} else {
// Update watch link to match 'watch checkbox' in save dialog.
// User logged in if module loaded.
// Just checking for mw.page.watch is not enough because in Firefox
// there is Object.prototype.watch...
if ( mw.page.watch && mw.page.watch.updateWatchLink ) {
var watchChecked = this.saveDialog.$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,
'wgRevisionId': newid
} );
this.revid = newid;
}
this.saveDialog.close();
this.saveDialog.reset();
this.replacePageContent( html, categoriesHtml );
this.setupSectionEditLinks();
this.tearDownBeforeUnloadHandler();
this.deactivate( true );
mw.hook( 'postEdit' ).fire( {
'message':
ve.msg( 'postedit-confirmation-saved', mw.user )
} );
}
};
/**
* Update save dialog when async begins
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onSaveAsyncBegin = function () {
this.saveDialog.saveButton.setDisabled( true );
this.saveDialog.pushPending();
};
/**
* Update save dialog when async completes
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onSaveAsyncComplete = function () {
this.saveDialog.saveButton.setDisabled( false );
this.saveDialog.popPending();
};
/**
* Update save dialog message on general error
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onSaveErrorEmpty = function () {
this.showSaveError( ve.msg( 'visualeditor-saveerror', 'Empty server response' ) );
this.saveDialog.saveButton.setDisabled( true );
this.events.trackSaveError( 'empty' );
};
/**
* Update save dialog message on spam blacklist error
*
* @method
* @param {Object} editApi
*/
ve.init.mw.ViewPageTarget.prototype.onSaveErrorSpamBlacklist = function ( editApi ) {
this.showSaveError(
// TODO: Use mediawiki.language equivalant of Language.php::listToText once it exists
ve.msg( 'spamprotectiontext' ) + ' ' + ve.msg( 'spamprotectionmatch', editApi.spamblacklist.split( '|' ).join( ', ' ) )
);
this.saveDialog.saveButton.setDisabled( true );
this.events.trackSaveError( 'spamblacklist' );
};
/**
* Update save dialog message on spam blacklist error
*
* @method
* @param {Object} editApi
*/
ve.init.mw.ViewPageTarget.prototype.onSaveErrorAbuseFilter = function ( editApi ) {
this.showSaveError( $.parseHTML( editApi.warning ), 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.
this.events.trackSaveError( 'abusefilter' );
};
/**
* Track when there is a bad edit token on save
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onSaveErrorBadToken = function () {
this.events.trackSaveError( 'badtoken' );
};
/**
* Update save dialog when token fetch indicates another user is logged in
*
* @method
* @param {boolean|undefined} isAnon Is newly logged in user anonymous. If
* undefined, user is logged in
*/
ve.init.mw.ViewPageTarget.prototype.onSaveErrorNewUser = function ( isAnon ) {
var badToken, userMsg;
badToken = document.createTextNode( mw.msg( 'visualeditor-savedialog-error-badtoken' ) + ' ' );
// mediawiki.jqueryMsg has a bug with [[User:$1|$1]] (bug 51388)
if ( isAnon ) {
userMsg = 'visualeditor-savedialog-identify-anon';
} else {
userMsg = 'visualeditor-savedialog-identify-user---' + mw.config.get( 'wgUserName' );
}
this.showSaveError(
$( badToken ).add( $.parseHTML( mw.message( userMsg ).parse() ) ),
'warning'
);
this.saveDialog.saveButton.setDisabled( false );
};
/**
* Update save dialog on captcha error
*
* @method
* @param {Object} editApi
*/
ve.init.mw.ViewPageTarget.prototype.onSaveErrorCaptcha = function ( editApi ) {
var $captchaDiv = $( '<div>' ), $captchaParagraph = $( '<p>' );
this.captcha = {
input: new OO.ui.TextInputWidget(),
id: editApi.captcha.id
};
$captchaDiv.append( $captchaParagraph );
$captchaParagraph.append(
$( '<strong>' ).text( mw.msg( 'captcha-label' ) ),
document.createTextNode( mw.msg( 'colon-separator' ) )
);
if ( editApi.captcha.url ) { // FancyCaptcha
$captchaParagraph.append(
$( $.parseHTML( mw.message( 'fancycaptcha-edit' ).parse() ) )
.filter( 'a' ).attr( 'target', '_blank' ).end()
);
$captchaDiv.append(
$( '<img>' ).attr( 'src', editApi.captcha.url )
);
} else if ( editApi.captcha.type === 'simple' || editApi.captcha.type === 'math' ) {
// SimpleCaptcha and MathCaptcha
$captchaParagraph.append(
mw.message( 'captcha-edit' ).parse(),
'<br>',
document.createTextNode( editApi.captcha.question )
);
} else if ( editApi.captcha.type === 'question' ) {
// QuestyCaptcha
$captchaParagraph.append(
mw.message( 'questycaptcha-edit' ).parse(),
'<br>',
editApi.captcha.question
);
}
$captchaDiv.append( this.captcha.input.$element );
this.showSaveError( $captchaDiv, false );
this.events.trackSaveError( 'captcha' );
};
/**
* Update save dialog message on unknown error
*
* @method
* @param {Object} editApi
* @param {Object|null} data API response data
*/
ve.init.mw.ViewPageTarget.prototype.onSaveErrorUnknown = function ( editApi, data ) {
this.showSaveError(
document.createTextNode(
( editApi && editApi.info ) ||
( data.error && data.error.info ) ||
( editApi && editApi.code ) ||
( data.error && data.error.code ) ||
'Unknown error'
)
);
this.saveDialog.saveButton.setDisabled( true );
this.events.trackSaveError( 'unknown' );
};
/**
* Update save dialog api-save-error message
*
* @method
* @param {string|jQuery|Node[]} msg Message content (string of HTML, jQuery object or array of
* Node objects)
* @param {string|boolean} wrap Whether to wrap the message in a paragraph and if
* so, how. One of "warning", "error" or false.
*/
ve.init.mw.ViewPageTarget.prototype.showSaveError = function ( msg, wrap ) {
wrap = wrap || 'error';
this.saveDialog.clearMessage( 'api-save-error' );
this.saveDialog.showMessage( 'api-save-error', msg, { 'wrap': wrap } );
};
/**
* 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().once( 'transact',
ve.bind( this.saveDialog.clearDiff, this.saveDialog )
);
this.saveDialog.setDiffAndReview( diffHtml );
};
/**
* 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.popPending();
};
/**
* 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 ) );
// It's possible to get here while the save dialog has never been opened (if the user uses
// the switch to source mode option)
if ( this.saveDialog ) {
this.saveDialog.popPending();
}
};
/**
* Handle edit conflict event.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onEditConflict = function () {
this.saveDialog.popPending();
this.saveDialog.swapPanel( 'conflict' );
};
/**
* Handle failed show changes event.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onNoChanges = function () {
this.saveDialog.popPending();
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().getWindow( 'meta' ).open();
};
/**
* 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, node, doc = this.surface.getView().getDocument(),
selection = this.surface.getModel().getSelection(),
textMatches,
viewPageTarget = this;
if ( !selection ) {
return;
}
node = doc.getNodeFromOffset( selection.start );
if ( !( node instanceof ve.ce.ContentBranchNode ) ) {
return;
}
text = ve.ce.getDomText( node.$element[0] );
textMatches = text.match( /\[\[|\{\{|''|<nowiki|<ref|~~~|^==|^\*|^\#/ );
if ( textMatches && !this.wikitextWarning ) {
mw.notify(
$( $.parseHTML( ve.init.platform.getParsedMessage( 'visualeditor-wikitext-warning' ) ) )
.filter( 'a' ).attr( 'target', '_blank' ).end(),
{
'title': ve.msg( 'visualeditor-wikitext-warning-title' ),
'tag': 'visualeditor-wikitext-warning',
'autoHide': false
}
).done( function ( notif ) {
viewPageTarget.wikitextWarning = notif;
} );
} else if ( !textMatches && this.wikitextWarning ) {
this.wikitextWarning.close();
this.wikitextWarning = undefined;
}
};
/**
* Re-evaluate whether the toolbar save button should be disabled or not.
*/
ve.init.mw.ViewPageTarget.prototype.updateToolbarSaveButtonState = function () {
this.edited = this.surface.getModel().hasBeenModified();
// Disable the save button if we have no history or if the sanity check is not finished
this.toolbarSaveButton.setDisabled( ( !this.edited && !this.restoring ) || !this.sanityCheckFinished );
this.toolbarSaveButton.$element.toggleClass( 've-init-mw-viewPageTarget-waiting', !this.sanityCheckFinished );
};
/**
* Handle clicks on the review button in the save dialog.
*
* @method
* @fires saveReview
*/
ve.init.mw.ViewPageTarget.prototype.onSaveDialogReview = function () {
this.sanityCheckVerified = true;
this.saveDialog.setSanityCheck( this.sanityCheckVerified );
if ( !this.saveDialog.$reviewViewer.find( 'table, pre' ).length ) {
this.emit( 'saveReview' );
this.saveDialog.reviewGoodButton.setDisabled( true );
this.saveDialog.pushPending();
if ( this.pageExists ) {
// Has no callback, handled via target.onShowChanges
this.showChanges( this.docToSave );
} else {
this.serialize( this.docToSave, ve.bind( this.onSaveDialogReviewComplete, this ) );
}
} else {
this.saveDialog.swapPanel( 'review' );
}
};
/**
* Handle completed serialize request for diff views for new page creations.
*
* @method
* @param {string} wikitext
*/
ve.init.mw.ViewPageTarget.prototype.onSaveDialogReviewComplete = function ( wikitext ) {
// Invalidate the viewer wikitext on next change
this.surface.getModel().getDocument().once( 'transact',
ve.bind( this.saveDialog.clearDiff, this.saveDialog )
);
this.saveDialog.setDiffAndReview( $( '<pre>' ).text( wikitext ) );
};
/**
* Try to save the current document.
* @fires saveInitiated
*/
ve.init.mw.ViewPageTarget.prototype.saveDocument = function () {
var saveOptions = this.getSaveOptions();
this.emit( 'saveInitiated' );
// 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
$( '<p>' ).append( ve.init.platform.getParsedMessage( 'missingsummary' ) ),
{ wrap: false }
);
} else {
this.saveDialog.saveButton.setDisabled( true );
this.saveDialog.pushPending();
this.save( this.docToSave, saveOptions );
}
};
/**
* Switch to edit source mode with the current wikitext
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.editSource = function () {
var doc = this.surface.getModel().getDocument();
this.$document.css( 'opacity', 0.5 );
if ( !confirm( ve.msg( 'visualeditor-mweditmodesource-warning' ) ) ) {
this.$document.css( 'opacity', 1 );
return;
}
// Get Wikitext from the DOM
this.serialize(
this.docToSave || ve.dm.converter.getDomFromModel( doc ),
ve.bind( this.submitWithSaveFields, this, { 'wpDiff': 1, 'veswitched': 1 } )
);
};
/**
* Handle clicks on the resolve conflict button in the conflict dialog.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.onSaveDialogResolveConflict = function () {
// Get Wikitext from the DOM, and set up a submit call when it's done
this.serialize(
this.docToSave,
ve.bind( this.submitWithSaveFields, this, { 'wpSave': 1 } )
);
};
/**
* Get save form fields from the save dialog form.
* @returns {Object} Form data for submission to the MediaWiki action=edit UI
*/
ve.init.mw.ViewPageTarget.prototype.getSaveFields = function () {
var fields = {};
this.$checkboxes
.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 ( 'name' ) && ( $this.prop( 'type' ) !== 'checkbox' || $this.prop( 'checked' ) ) ) {
fields[$this.prop( 'name' )] = $this.val();
}
} );
ve.extendObject( fields, {
'wpSummary': this.saveDialog ? this.saveDialog.editSummaryInput.getValue() : this.initialEditSummary,
'wpCaptchaId': this.captcha && this.captcha.id,
'wpCaptchaWord': this.captcha && this.captcha.input.getValue()
} );
return fields;
};
/**
* Invoke #submit with the data from #getSaveFields
* @param {Object} fields Fields to add in addition to those from #getSaveFields
* @param {string} wikitext Wikitext to submit
* @returns {boolean} Whether submission was started
*/
ve.init.mw.ViewPageTarget.prototype.submitWithSaveFields = function ( fields, wikitext ) {
return this.submit( wikitext, $.extend( this.getSaveFields(), fields ) );
};
/**
* Get edit API options from the save dialog form.
* @returns {Object} Save options for submission to the MediaWiki API
*/
ve.init.mw.ViewPageTarget.prototype.getSaveOptions = function () {
var key, options = this.getSaveFields(),
fieldMap = {
'wpSummary': 'summary',
'wpMinoredit': 'minor',
'wpWatchthis': 'watch',
'wpCaptchaId': 'captchaid',
'wpCaptchaWord': 'captchaword'
};
for ( key in fieldMap ) {
if ( options[key] !== undefined ) {
options[fieldMap[key]] = options[key];
delete options[key];
}
}
if ( this.sanityCheckPromise.state() === 'rejected' ) {
options.needcheck = 1;
}
return options;
};
/**
* 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 = $.Deferred();
// Reset
viewPage.sanityCheckFinished = false;
viewPage.sanityCheckVerified = false;
setTimeout( function () {
// We can't compare oldDom.body and newDom.body directly, because the attributes on the
// <body> were ignored in the conversion. So compare each child separately.
var i,
len = oldDom.body.childNodes.length,
newDoc = new ve.dm.Document( data, oldDom, undefined, doc.getInternalList(), doc.getInnerWhitespace(), doc.getLang(), doc.getDir() ),
newDom = ve.dm.converter.getDomFromModel( newDoc );
// Explicitly unlink our full copy of the original version of the document data
data = undefined;
if ( len !== newDom.body.childNodes.length ) {
// Different number of children, so they're definitely different
d.reject();
return;
}
for ( i = 0; i < len; i++ ) {
if ( !oldDom.body.childNodes[i].isEqualNode( newDom.body.childNodes[i] ) ) {
d.reject();
return;
}
}
d.resolve();
} );
viewPage.sanityCheckPromise = d.promise()
.done( function () {
// If we detect no roundtrip errors,
// don't emphasize "review changes" to the user.
viewPage.sanityCheckVerified = true;
})
.always( function () {
viewPage.sanityCheckFinished = true;
viewPage.updateToolbarSaveButtonState();
} );
};
/**
* Switch to viewing mode.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.tearDownSurface = function () {
// Update UI
if ( this.$document ) {
this.$document.blur();
this.$document = null;
}
this.tearDownToolbar();
this.restoreDocumentTitle();
if ( this.surface.mwTocWidget ) {
this.surface.mwTocWidget.teardown();
}
if ( this.saveDialog ) {
// If we got as far as setting up the save dialog, tear it down
this.saveDialog.close();
this.saveDialog.teardown();
this.saveDialog = null;
}
// 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
$( '#ca-view a, #ca-nstab-visualeditor a' )
.click( ve.bind( this.onViewTabClick, this ) );
}
mw.hook( 've.skinTabSetupComplete' ).fire();
};
/**
* Modify page content to make section edit links activate the editor.
* Dummy replaced by init.js so that we can call it again from #onSave after
* replacing the page contents with the new html.
*/
ve.init.mw.ViewPageTarget.prototype.setupSectionEditLinks = null;
/**
* Add content and event bindings to toolbar buttons.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.setupToolbarButtons = function () {
this.toolbarCancelButton = new OO.ui.ButtonWidget( { 'label': ve.msg( 'visualeditor-toolbar-cancel' ) } );
this.toolbarCancelButton.$element.addClass( 've-ui-toolbar-cancelButton' );
this.toolbarSaveButton = new OO.ui.ButtonWidget( {
'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.$element.addClass( 've-ui-toolbar-saveButton' );
if ( ve.msg( 'accesskey-save' ) !== '-' && ve.msg( 'accesskey-save' ) !== '' ) {
// FlaggedRevs tries to use this - it's useless on VE pages because all that stuff gets hidden, but it will still conflict so get rid of it
this.elementsThatHadOurAccessKey = $( '[accesskey="' + ve.msg( 'accesskey-save' ) + '"]' ).removeAttr( 'accesskey' );
this.toolbarSaveButton.$button.attr( 'accesskey', ve.msg( 'accesskey-save' ) );
}
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',
'title': ve.msg( 'visualeditor-pagemenu-tooltip' ),
'include': [ 'meta', 'settings', 'advancedSettings', 'categories', 'languages', 'editModeSource', 'commandHelp' ]
}
] );
$actionTools
.addClass( 've-init-mw-viewPageTarget-toolbar-utilites' )
.append( actions.$element );
$pushButtons
.addClass( 've-init-mw-viewPageTarget-toolbar-actions' )
.append(
this.toolbarCancelButton.$element,
this.toolbarSaveButton.$element
);
this.toolbar.$actions.append( $actionTools, $pushButtons );
};
/**
* Remove the save button from the user interface.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.detachToolbarButtons = function () {
this.toolbarCancelButton.$element.detach();
this.toolbarSaveButton.$element.detach();
this.toolbar.$actions.empty();
};
/**
* Add content and event bindings to the save dialog.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.setupSaveDialog = function () {
this.saveDialog = this.surface.getDialogs().getWindow( 'mwSave' );
// Connect to save dialog
this.saveDialog.connect( this, {
'save': 'saveDocument',
'review': 'onSaveDialogReview',
'resolve': 'onSaveDialogResolveConflict',
'close': 'onSaveDialogClose'
} );
// Setup edit summary and checkboxes
this.saveDialog.setEditSummary( this.initialEditSummary );
this.saveDialog.setupCheckboxes( this.$checkboxes );
};
/**
* Show the save dialog.
*
* @method
* @fires saveWorkflowBegin
*/
ve.init.mw.ViewPageTarget.prototype.showSaveDialog = function () {
// Make sure any open inspectors are closed
this.surface.getContext().closeCurrentInspector();
// Preload the serialization
if ( !this.docToSave ) {
this.docToSave = ve.dm.converter.getDomFromModel( this.surface.getModel().getDocument() );
}
this.prepareCacheKey( this.docToSave );
if ( !this.saveDialog ) {
this.setupSaveDialog();
}
this.saveDialog.setSanityCheck( this.sanityCheckVerified );
this.saveDialog.open( this.surface.getModel().getFragment(), { 'dir': this.surface.getModel().getDocument().getLang() } );
this.emit( 'saveWorkflowBegin' );
};
/**
* Respond to the save dialog being closed.
* @fires saveWorkflowEnd
*/
ve.init.mw.ViewPageTarget.prototype.onSaveDialogClose = function () {
// Clear the cached HTML and cache key once the document changes
var clear = ve.bind( function () {
this.docToSave = null;
this.clearPreparedCacheKey();
}, this );
if ( this.surface ) {
this.surface.getModel().getDocument().once( 'transact', clear );
} else {
clear();
}
this.emit( 'saveWorkflowEnd' );
};
/**
* 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 );
$( '#t-print, #t-permalink, #p-coll-print_export, #t-cite' ).show();
};
/**
* Mute the page content.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.mutePageContent = function () {
$( '#bodyContent > :visible:not(#siteSub)' )
.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,.ve-ui-mwTocWidget)' )
.addClass( 've-init-mw-viewPageTarget-content' )
.hide();
$( '#t-print, #t-permalink, #p-coll-print_export, #t-cite' ).hide();
};
/**
* Show elements that didn't have a counter-part in the edit view.
*/
ve.init.mw.ViewPageTarget.prototype.showReadOnlyContent = function () {
var $toc = $( '#toc' ),
$wrap = $toc.parent();
if ( $wrap.data( 've.hideTableOfContents' ) ) {
$wrap.show( function () {
$toc.unwrap();
} );
}
$( '#contentSub' ).show();
};
/**
* Hide elements that don't have a counter-part in the edit view.
*
* Call this when puting the page content, so that when we replace the
* muted content with the edit surface, everything aligns in the same
* place. If things like contentSub and TOC remain visible in mute mode,
* there is an additional visual shift that is unpleasant to the user.
*/
ve.init.mw.ViewPageTarget.prototype.hideReadOnlyContent = function () {
$( '#toc' )
.wrap( '<div>' )
.parent()
.data( 've.hideTableOfContents', true )
.hide();
$( '#contentSub' ).hide();
};
/**
* Hide the toolbar.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.tearDownToolbar = function () {
this.toolbar.$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' );
};
/**
* Restore the page title to its original style.
*
* @method
*/
ve.init.mw.ViewPageTarget.prototype.restorePageTitle = function () {
var $els = $( '#firstHeading, #siteSub' )
.removeClass( 've-init-mw-viewPageTarget-transform-muted' );
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.
*/
ve.init.mw.ViewPageTarget.prototype.transformPage = function () {
var uri;
// Deselect current mode (e.g. "view" or "history"). In skins like monobook that don't have
// separate tab sections for content actions and namespaces the below is a no-op.
$( '#p-views' ).find( 'li.selected' ).removeClass( 'selected' );
$( '#ca-ve-edit' ).addClass( 'selected' );
// Hide site notice (if present)
$( '#siteNotice:visible' )
.addClass( 've-hide' )
.slideUp( 'fast' );
// Add class to document
$( 'html' ).addClass( 've-activated' );
// 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( this.popState, document.title, uri );
}
this.actFromPopState = false;
};
/**
* Page modifications for switching back to view mode.
*/
ve.init.mw.ViewPageTarget.prototype.restorePage = function () {
var uri;
// Skins like monobook don't have a tab for view mode and instead just have the namespace tab
// selected. We didn't deselect the namespace tab, so we're ready after deselecting #ca-ve-edit.
// In skins having #ca-view (like Vector), select that.
$( '#ca-ve-edit' ).removeClass( 'selected' );
$( '#ca-view' ).addClass( 'selected' );
// Make site notice visible again (if present)
$( '#siteNotice.ve-hide' )
.slideDown( 'fast' );
// Remove class from document
$( 'html' ).removeClass( 've-activated' );
// 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( this.popState, document.title, uri );
} else {
window.history.pushState( this.popState, document.title, this.viewUri );
}
}
this.actFromPopState = false;
};
/**
* @param {Event} e Native event object
*/
ve.init.mw.ViewPageTarget.prototype.onWindowPopState = function ( e ) {
var newUri;
if ( !this.verifyPopState( e.state ) ) {
// Ignore popstate events fired for states not created by us
// This also filters out the initial fire in Chrome (bug 57901).
return;
}
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 {string} html Rendered HTML from server
* @param {string} categoriesHtml Rendered categories HTML from server
*/
ve.init.mw.ViewPageTarget.prototype.replacePageContent = function ( html, categoriesHtml ) {
var $content = $( $.parseHTML( html ) );
mw.hook( 'wikipage.content' ).fire( $( '#mw-content-text' ).empty().append( $content ) );
$( '#catlinks' ).replaceWith( categoriesHtml );
};
/**
* 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 );
};
/**
* 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 dialogs as needed on load.
*/
ve.init.mw.ViewPageTarget.prototype.maybeShowDialogs = function () {
if ( mw.config.get( 'wgVisualEditorConfig' ).showBetaWelcome ) {
if (
!( 'vehidebetadialog' in this.currentUri.query ) &&
$.cookie( 've-beta-welcome-dialog' ) === null
) {
this.surface.getDialogs().getWindow( 'betaWelcome' ).open();
}
$.cookie( 've-beta-welcome-dialog', 1, { 'path': '/', 'expires': 30 } );
}
if ( this.surface.getModel().metaList.getItemsInGroup( 'mwRedirect' ).length ) {
this.surface.getDialogs().getWindow( 'meta' ).open(
this.surface.getModel().getFragment(),
{ 'page': 'settings' }
);
}
};
/**
* 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 && mw.user.options.get( 'useeditwarning' ) ) {
// 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;
}
};