wikimedia/mediawiki-extensions-MobileFrontend

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src/mobile.editor.overlay/EditorOverlayBase.js

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/* global $ */
/**
 * @class EditorOverlayBase
 * @private
 */
const Overlay = require( '../mobile.startup/Overlay' ),
    util = require( '../mobile.startup/util' ),
    parseBlockInfo = require( './parseBlockInfo' ),
    headers = require( '../mobile.startup/headers' ),
    icons = require( '../mobile.startup/icons' ),
    Button = require( '../mobile.startup/Button' ),
    IconButton = require( '../mobile.startup/IconButton' ),
    mfExtend = require( '../mobile.startup/mfExtend' ),
    blockMessageDrawer = require( './blockMessageDrawer' ),
    MessageBox = require( '../mobile.startup/MessageBox' ),
    mwUser = mw.user;

/**
 * 'Edit' button
 *
 * @param {OO.ui.ToolGroup} toolGroup
 * @param {Object} config
 * @private
 */
function EditVeTool( toolGroup, config ) {
    config = config || {};
    config.classes = [ 'visual-editor' ];
    EditVeTool.super.call( this, toolGroup, config );
}
OO.inheritClass( EditVeTool, OO.ui.Tool );

EditVeTool.static.name = 'editVe';
EditVeTool.static.icon = 'edit';
EditVeTool.static.group = 'editorSwitcher';
EditVeTool.static.title = mw.msg( 'mobile-frontend-editor-switch-visual-editor' );
/**
 * click handler
 *
 * @memberof EditVeTool
 * @instance
 */
EditVeTool.prototype.onSelect = function () {
    // will be overridden later
};
/**
 * Toolbar update state handler.
 *
 * @memberof EditVeTool
 * @instance
 */
EditVeTool.prototype.onUpdateState = function () {
    // do nothing
};

/**
 * Base class for SourceEditorOverlay and VisualEditorOverlay
 *
 * @class EditorOverlayBase
 * @private
 * @extends Overlay
 * @uses IconButton
 * @uses user
 * @param {Object} params Configuration options
 * @param {boolean} params.editSwitcher whether possible to switch mode in header
 * @param {boolean} params.hasToolbar whether the editor has a toolbar
 */
function EditorOverlayBase( params ) {
    const
        options = util.extend(
            true,
            {
                onBeforeExit: this.onBeforeExit.bind( this ),
                className: 'overlay editor-overlay',
                isBorderBox: false
            },
            params,
            {
                events: util.extend(
                    {
                        'click .back': 'onClickBack',
                        'click .continue': 'onClickContinue',
                        'click .submit': 'onClickSubmit',
                        'click .anonymous': 'onClickAnonymous'
                    },
                    params.events
                )
            }
        );

    if ( options.isNewPage ) {
        options.placeholder = mw.msg( 'mobile-frontend-editor-placeholder-new-page', mwUser );
    }
    // change the message to request a summary when not in article namespace
    if ( mw.config.get( 'wgNamespaceNumber' ) !== 0 ) {
        options.summaryRequestMsg = mw.msg( 'mobile-frontend-editor-summary' );
    }
    this.isNewPage = options.isNewPage;
    this.sectionId = options.sectionId;
    this.overlayManager = options.overlayManager;

    Overlay.call( this, options );
}

mfExtend( EditorOverlayBase, Overlay, {
    /**
     * @memberof EditorOverlayBase
     * @instance
     * @mixes Overlay#defaults
     * @property {Object} defaults Default options hash.
     * @property {OverlayManager} defaults.overlayManager instance
     * @property {mw.Api} defaults.api to interact with
     * @property {boolean} defaults.hasToolbar Whether the editor has a toolbar or not. When
     *  disabled a header will be show instead.
     * @property {string} defaults.continueMsg Caption for the next button on edit form
     * which takes you to the screen that shows a preview and license information.
     * @property {string} defaults.closeMsg Caption for a button that takes you back to editing
     * from edit preview screen.
     * @property {string} defaults.summaryRequestMsg Header above edit summary input field
     * asking the user to summarize the changes they made to the page.
     * @property {string} defaults.summaryMsg A placeholder with examples for the summary input
     * field asking user what they changed.
     * @property {string} defaults.placeholder Placeholder text for empty sections.
     * @property {string} defaults.captchaMsg Placeholder for captcha input field.
     * @property {string} defaults.captchaTryAgainMsg A message shown when user enters
     * wrong CAPTCHA and a new one is displayed.
     * @property {string} defaults.switchMsg Label for button that allows the user
     * to switch between two different editing interfaces.
     * @property {string} defaults.licenseMsg Text and link of the license,
     * under which this contribution will be released to inform the user.
     */
    defaults: util.extend( {}, Overlay.prototype.defaults, {
        hasToolbar: false,
        continueMsg: mw.msg( 'mobile-frontend-editor-continue' ),
        closeMsg: mw.msg( 'mobile-frontend-editor-keep-editing' ),
        summaryRequestMsg: mw.msg( 'mobile-frontend-editor-summary-request' ),
        summaryMsg: mw.msg( 'mobile-frontend-editor-summary-placeholder' ),
        placeholder: mw.msg( 'mobile-frontend-editor-placeholder' ),
        captchaMsg: mw.msg( 'mobile-frontend-account-create-captcha-placeholder' ),
        captchaTryAgainMsg: mw.msg( 'mobile-frontend-editor-captcha-try-again' ),
        switchMsg: mw.msg( 'mobile-frontend-editor-switch-editor' ),
        confirmMsg: mw.msg( 'mobile-frontend-editor-cancel-confirm' ),
        licenseMsg: undefined
    } ),
    /**
     * @inheritdoc
     * @memberof EditorOverlayBase
     * @instance
     */
    template: util.template( `
<div class="overlay-header-container header-container position-fixed"></div>

<div class="overlay-content">
    <div class="panels">
        <div class="save-panel panel hideable hidden">
            <div id="error-notice-container"></div>
            <h2 class="summary-request">{{{summaryRequestMsg}}}</h2>
            <div class="summary-input"></div>
            {{#licenseMsg}}<div class="license">{{{licenseMsg}}}</div>{{/licenseMsg}}
        </div>
        <div class="captcha-panel panel hideable hidden">
            <div class="captcha-box">
                <img id="image" src="">
                <div id="question"></div>
                <div class="cdx-text-input">
                    <input class="captcha-word cdx-text-input__input" placeholder="{{captchaMsg}}" />
                </div>
            </div>
        </div>
    </div>
    {{>content}}
</div>
<div class="overlay-footer-container position-fixed">
    {{>footer}}
</div>
    ` ),
    /**
     * @memberof EditorOverlayBase
     * @instance
     */
    sectionId: '',
    /**
     * Logs an event to http://meta.wikimedia.org/wiki/Schema:EditAttemptStep
     *
     * @memberof EditorOverlayBase
     * @instance
     * @param {Object} data
     */
    log: function ( data ) {
        mw.track( 'editAttemptStep', util.extend( data, {
            // eslint-disable-next-line camelcase
            editor_interface: this.editor
        } ) );
    },
    /**
     * Logs an event to http://meta.wikimedia.org/wiki/Schema:VisualEditorFeatureUse
     *
     * @memberof EditorOverlayBase
     * @instance
     * @param {Object} data
     */
    logFeatureUse: function ( data ) {
        mw.track( 'visualEditorFeatureUse', util.extend( data, {
            // eslint-disable-next-line camelcase
            editor_interface: this.editor
        } ) );
    },

    /**
     * If this is a new article, require confirmation before saving.
     *
     * @memberof EditorOverlayBase
     * @instance
     * @return {boolean} The user confirmed saving
     */
    confirmSave: function () {
        if ( this.isNewPage &&
            // TODO: Replace with an OOUI dialog
            // eslint-disable-next-line no-alert
            !window.confirm( mw.msg( 'mobile-frontend-editor-new-page-confirm', mwUser ) )
        ) {
            return false;
        } else {
            return true;
        }
    },
    /**
     * Executed when page save is complete. Updates urls and shows toast message.
     *
     * @memberof EditorOverlayBase
     * @instance
     * @param {number|null} newRevId ID of the newly created revision, or null if it was a
     * null edit.
     * @param {string} [redirectUrl] URL to redirect to, if different than the current URL.
     * @param {boolean} [tempUserCreated] Whether a temporary user was created
     */
    onSaveComplete: function ( newRevId, redirectUrl, tempUserCreated ) {
        const
            self = this;

        this.saved = true;

        if ( newRevId ) {
            let action;
            if ( self.isNewPage ) {
                action = 'created';
            } else if ( self.options.oldId ) {
                action = 'restored';
            } else {
                action = 'saved';
            }
            self.showSaveCompleteMsg( action, tempUserCreated );
        }

        // Ensure we don't lose this event when logging
        this.log( {
            action: 'saveSuccess',
            // eslint-disable-next-line camelcase
            revision_id: newRevId
        } );
        if ( tempUserCreated && redirectUrl ) {
            // The caller handles this redirect, either in SourceEditorOverlay or in VE's ArticleTarget
            return;
        }
        setTimeout( function () {
            // Wait for any other teardown navigation to happen (e.g. router.back())
            // before setting our final location.
            if ( redirectUrl ) {
                // eslint-disable-next-line no-restricted-properties
                window.location.href = redirectUrl;
            } else if ( self.sectionId ) {
                // Ideally we'd want to do this via replaceState (see T189173)
                // eslint-disable-next-line no-restricted-properties
                window.location.hash = '#' + self.sectionId;
            } else {
                // Cancel the hash fragment
                // otherwise clicking back after a save will take you back to the editor.
                // We avoid calling the hide method of the overlay here as this can be asynchronous
                // and may conflict with the window.reload call below.
                // eslint-disable-next-line no-restricted-properties
                window.location.hash = '#';
            }
        } );
    },
    /**
     * Show a save-complete message to the user
     *
     * @inheritdoc
     * @memberof VisualEditorOverlay
     * @instance
     * @param {string} action One of 'saved', 'created', 'restored'
     * @param {boolean} [tempUserCreated] Whether a temporary user was created
     */
    showSaveCompleteMsg: function ( action, tempUserCreated ) {
        __non_webpack_require__( 'mediawiki.action.view.postEdit' ).fireHook( action, tempUserCreated );
    },
    /**
     * Executed when page save fails. Handles logging the error. Subclasses
     * should display error messages as appropriate.
     *
     * @memberof EditorOverlayBase
     * @instance
     * @param {Object} data API response
     */
    onSaveFailure: function ( data ) {
        let code = data && data.errors && data.errors[0] && data.errors[0].code;

        const
            // Compare to ve.init.mw.ArticleTargetEvents.js in VisualEditor.
            typeMap = {
                badtoken: 'userBadToken',
                assertanonfailed: 'userNewUser',
                assertuserfailed: 'userNewUser',
                assertnameduserfailed: 'userNewUser',
                'abusefilter-disallowed': 'extensionAbuseFilter',
                'abusefilter-warning': 'extensionAbuseFilter',
                captcha: 'extensionCaptcha',
                // FIXME: This language is non-inclusive and we would love to change it,
                // but this relates to an error code provided by software.
                // This is blocked on T254649
                spamblacklist: 'extensionSpamBlacklist',
                // FIXME: This language is non-inclusive and we would love to change it,
                // but this relates to an error code provided by software.
                // Removal of this line is blocked on T254650.
                'titleblacklist-forbidden': 'extensionTitleBlacklist',
                pagedeleted: 'editPageDeleted',
                editconflict: 'editConflict'
            };

        if ( data.edit && data.edit.captcha ) {
            code = 'captcha';
        }

        this.log( {
            action: 'saveFailure',
            message: code,
            type: typeMap[code] || 'responseUnknown'
        } );
    },
    /**
     * Report load errors back to the user. Silently record the error using EventLogging.
     *
     * @memberof EditorOverlayBase
     * @instance
     * @param {string} text Text (HTML) of message to display to user
     */
    reportError: function ( text ) {
        const errorNotice = new MessageBox( {
            type: 'error',
            msg: text,
            heading: mw.msg( 'mobile-frontend-editor-error' )
        } );
        this.$errorNoticeContainer.html( errorNotice.$el );
    },
    hideErrorNotice: function () {
        this.$errorNoticeContainer.empty();
    },
    /**
     * Prepares the penultimate screen before saving.
     * Expects to be overridden by child class.
     *
     * @memberof EditorOverlayBase
     * @instance
     */
    onStageChanges: function () {
        this.showHidden( '.save-header, .save-panel' );
        this.hideErrorNotice();
        this.log( {
            action: 'saveIntent'
        } );
        // Scroll to the top of the page, so that the summary input is visible
        // (even if overlay was scrolled down when editing) and weird iOS header
        // problems are avoided (header position not updating to the top of the
        // screen, instead staying lower until a subsequent scroll event).
        window.scrollTo( 0, 1 );
    },
    /**
     * Executed when the editor clicks the save button. Expects to be overridden by child
     * class. Checks if the save needs to be confirmed.
     *
     * @memberof EditorOverlayBase
     * @instance
     */
    onSaveBegin: function () {
        this.confirmAborted = false;
        this.hideErrorNotice();
        // Ask for confirmation in some cases
        if ( !this.confirmSave() ) {
            this.confirmAborted = true;
            return;
        }
        this.log( {
            action: 'saveAttempt'
        } );
    },
    /**
     * @inheritdoc
     * @memberof EditorOverlayBase
     */
    preRender: function () {
        const options = this.options;

        this.options.headers = [
            headers.formHeader(
                util.template( `
{{^hasToolbar}}
<div class="overlay-title">
    <h2>{{{editingMsg}}}</h2>
</div>
{{/hasToolbar}}
{{#hasToolbar}}<div class="toolbar"></div>{{/hasToolbar}}
{{#editSwitcher}}
    <div class="switcher-container">
    </div>
{{/editSwitcher}}
                ` ).render( {
                    hasToolbar: options.hasToolbar,
                    editSwitcher: options.editSwitcher,
                    editingMsg: options.editingMsg
                } ),
                options.readOnly ? [] : [
                    new IconButton( {
                        tagName: 'button',
                        action: 'progressive',
                        weight: 'primary',
                        icon: 'next-invert',
                        additionalClassNames: 'continue',
                        disabled: true,
                        title: options.continueMsg
                    } )
                ],
                icons.cancel(),
                'initial-header'
            ),
            headers.saveHeader( options.previewingMsg, 'save-header hidden' ),
            headers.savingHeader( mw.msg( 'mobile-frontend-editor-wait' ) )
        ];
    },

    /**
     * @inheritdoc
     * @memberof EditorOverlayBase
     * @instance
     */
    postRender: function () {
        this.$errorNoticeContainer = this.$el.find( '#error-notice-container' );

        Overlay.prototype.postRender.apply( this );
        this.showHidden( '.initial-header' );
    },
    show: function () {
        const self = this;
        this.allowCloseWindow = mw.confirmCloseWindow( {
            // Returns true if content has changed
            test: function () {
                // Check if content has changed
                return self.hasChanged();
            },

            // Message to show the user, if content has changed
            message: mw.msg( 'mobile-frontend-editor-cancel-confirm' ),
            // Event namespace
            namespace: 'editwarning'
        } );

        this.saved = false;
        Overlay.prototype.show.call( this );

        // Inform other interested code that the editor has loaded
        /**
         * Internal for use in ContentTranslation and GrowthExperiments only.
         *
         * @event ~'mobileFrontend.editorOpened'
         * @memberof Hooks
         */
        mw.hook( 'mobileFrontend.editorOpened' ).fire( this.editor );
    },
    /**
     * Back button click handler
     *
     * @memberof EditorOverlayBase
     * @instance
     */
    onClickBack: function () {},
    /**
     * Submit button click handler
     *
     * @memberof EditorOverlayBase
     * @instance
     */
    onClickSubmit: function () {
        this.onSaveBegin();
    },
    /**
     * Continue button click handler
     *
     * @memberof EditorOverlayBase
     * @instance
     */
    onClickContinue: function () {
        this.onStageChanges();
    },
    /**
     * "Edit without logging in" button click handler
     *
     * @memberof EditorOverlayBase
     * @instance
     */
    onClickAnonymous: function () {},
    /**
     * @memberof EditorOverlayBase
     * @instance
     * @param {Function} exit Callback to exit the overlay
     * @param {Function} cancel Callback to cancel exiting the overlay
     */
    onBeforeExit: function ( exit, cancel ) {
        const self = this;
        if ( this.hasChanged() && !this.switching ) {
            if ( !this.windowManager ) {
                this.windowManager = OO.ui.getWindowManager();
                this.windowManager.addWindows( [ new mw.widgets.AbandonEditDialog() ] );
            }
            this.windowManager.openWindow( 'abandonedit' )
                .closed.then( function ( data ) {
                    if ( data && data.action === 'discard' ) {
                        // log abandonment
                        self.log( {
                            action: 'abort',
                            mechanism: 'cancel',
                            type: 'abandon'
                        } );
                        self.onExit();
                        exit();
                    }
                } );
            cancel();
            return;
        }
        if ( !this.switching && !this.saved ) {
            // log leaving without changes
            this.log( {
                action: 'abort',
                mechanism: 'cancel',
                // if this is VE, hasChanged will be false because the Surface has
                // already been destroyed (which is good because it stops us
                // double-showing the abandon changes dialog above)... but we can
                // test whether there *were* changes for logging purposes by
                // examining the target:
                type: ( this.target && this.target.edited ) ? 'abandon' : 'nochange'
            } );
        }
        this.onExit();
        exit();
        if ( mw.config.get( 'wgAction' ) === 'edit' ) {
            // We got into the overlay via directly visiting an action=edit
            // URL, which has been taken over. As such, depending on
            // how we got here, the normal overlay process isn't going to
            // produce the correct result.
            setTimeout( function () {
                // This needs to happen after the overlay-hide has completed
                // so we have access to the "real" URL, and `exit`
                // unfortunately doesn't expose a promise for this. There's
                // several setTimeouts within the hide, so we're just going
                // to use a long-enough setTimeout of our own to skip those.
                if ( !mw.util.getParamValue( 'veaction' ) && !mw.util.getParamValue( 'action' ) ) {
                    // Use reload if possible, to emulate having gone back
                    location.reload();
                } else {
                    location.href = mw.util.getUrl();
                }
            }, 100 );
        }
    },
    onExit: function () {
        // May not be set if overlay has not been previously shown
        if ( this.allowCloseWindow ) {
            this.allowCloseWindow.release();
        }
        /**
         * Internal for use in ContentTranslation and GrowthExperiments only.
         *
         * @event ~'mobileFrontend.editorClosed'
         * @memberof Hooks
         */
        mw.hook( 'mobileFrontend.editorClosed' ).fire();
    },
    /**
     * Sets additional values used for anonymous editing warning.
     *
     * @memberof EditorOverlayBase
     * @instance
     * @param {Object} options
     * @return {jQuery.Element}
     */
    createAnonWarning: function ( options ) {
        const $actions = $( '<div>' ).addClass( 'actions' ),
            // Use MediaWiki ResourceLoader require(), not Webpack require()
            contLangMessages = (

                __non_webpack_require__( './contLangMessages.json' )
            ),
            msg = this.gateway.wouldautocreate ?
                'mobile-frontend-editor-autocreatewarning' :
                'mobile-frontend-editor-anonwarning',
            $anonWarning = $( '<div>' ).addClass( 'anonwarning content' ).append(
                new MessageBox( {
                    type: 'notice',
                    className: 'anon-msg',
                    // eslint-disable-next-line mediawiki/msg-doc
                    msg: mw.message( msg, contLangMessages[ 'tempuser-helppage' ] ).parse()
                } ).$el,
                $actions
            ),
            params = util.extend( {
                returnto: options.returnTo || (
                    // use wgPageName as this includes the namespace if outside Main
                    mw.config.get( 'wgPageName' ) + '#/editor/' + ( options.sectionId || 'all' )
                ),
                warning: 'mobile-frontend-edit-login-action'
            }, options.queryParams ),
            signupParams = util.extend( {
                type: 'signup',
                warning: 'mobile-frontend-edit-signup-action'
            }, options.signupQueryParams ),
            anonymousEditorActions = [
                new Button( {
                    label: mw.msg( 'mobile-frontend-editor-anon' ),
                    block: true,
                    additionalClassNames: 'anonymous progressive',
                    progressive: true
                } ),
                new Button( {
                    block: true,
                    href: mw.util.getUrl( 'Special:UserLogin', params ),
                    label: mw.msg( 'mobile-frontend-watchlist-cta-button-login' )
                } ),
                new Button( {
                    block: true,
                    href: mw.util.getUrl( 'Special:UserLogin', util.extend( params, signupParams ) ),
                    label: mw.msg( 'mobile-frontend-watchlist-cta-button-signup' )
                } )
            ];

        $actions.append(
            anonymousEditorActions.map( function ( action ) {
                return action.$el;
            } )
        );

        return $anonWarning;
    },
    /**
     * Creates and returns a copy of the anon talk message warning
     *
     * @memberof EditorOverlayBase
     * @instance
     * @return {jQuery.Element}
     */
    createAnonTalkWarning: function () {
        return $( '.minerva-anon-talk-message' ).clone();
    },
    /**
     * Get an options object not containing any defaults or editor
     * specific options, so that it can be used to construct a
     * different editor for switching.
     *
     * @memberof EditorOverlayBase
     * @return {Object} Options
     */
    getOptionsForSwitch: function () {
        // Only preserve options that would be passed in editor.js#setupEditor
        // and skip over defaults.
        return {
            switched: true,
            overlayManager: this.options.overlayManager,
            currentPageHTMLParser: this.options.currentPageHTMLParser,
            fakeScroll: this.options.fakeScroll,
            api: this.options.api,
            licenseMsg: this.options.licenseMsg,
            title: this.options.title,
            titleObj: this.options.titleObj,
            isAnon: this.options.isAnon,
            isNewPage: this.options.isNewPage,
            oldId: this.options.oldId,
            contentLang: this.options.contentLang,
            contentDir: this.options.contentDir,
            sectionId: this.options.sectionId
        };
    },

    /**
     * Checks whether the state of the thing being edited as changed. Expects to be
     * implemented by child class.
     *
     * @memberof EditorOverlayBase
     * @instance
     */
    hasChanged: function () {},
    /**
     * Get a promise that is resolved when the editor data has loaded,
     * or rejected when we're refusing to load the editor because the user is blocked.
     *
     * @memberof EditorOverlayBase
     * @instance
     * @return {jQuery.Promise}
     */
    getLoadingPromise: function () {
        return this.dataPromise.then( function ( result ) {
            // check if user is blocked
            if ( result && result.blockinfo ) {
                const block = parseBlockInfo( result.blockinfo ),
                    message = blockMessageDrawer( block );
                return util.Deferred().reject( message );
            }
            return result;
        } );
    },
    showEditNotices: function () {
        const overlay = this;
        if ( mw.config.get( 'wgMFEditNoticesFeatureConflict' ) ) {
            return;
        }
        this.getLoadingPromise().then( function ( data ) {
            if ( data.notices ) {
                const editNotices = Object.keys( data.notices ).filter( function ( key ) {
                    if ( key.indexOf( 'editnotice' ) !== 0 ) {
                        return false;
                    }
                    if ( key === 'editnotice-notext' ) {
                        // This notice is shown on pages which don't have any
                        // other edit notices. It's blank by default, but
                        // some wikis have it template-generated and hidden
                        // by CSS. It's filtered out from VE's API response,
                        // but not from the source mode.
                        return false;
                    }
                    // The contents of an edit notice is unlikely to change in the 24 hour
                    // expiry window, so just record that a notice with this key has been shown.
                    // If a cheap hashing function was available in core (or the API provided
                    // as hash) it could be used here instead.
                    const storageKey = 'mf-editnotices/' + mw.config.get( 'wgPageName' ) + '#' + key;
                    if ( mw.storage.get( storageKey ) ) {
                        return false;
                    }
                    mw.storage.set( storageKey, '1', 24 * 60 * 60 );
                    return true;
                } );

                if ( editNotices.length ) {
                    mw.loader.using( 'oojs-ui-windows' ).then( function () {
                        const $container = $( '<div>' ).addClass( 'editor-overlay-editNotices' );
                        editNotices.forEach( function ( key ) {
                            const $notice = $( '<div>' ).append( data.notices[ key ] );
                            $notice.addClass( 'editor-overlay-editNotice' );
                            $container.append( $notice );
                        } );
                        OO.ui.alert( $container );

                        overlay.logFeatureUse( {
                            feature: 'notices',
                            action: 'show'
                        } );
                    } );
                }
            }
        } );
    },
    /**
     * Handles a failed save due to a CAPTCHA provided by ConfirmEdit extension.
     *
     * @memberof EditorOverlayBase
     * @instance
     * @param {Object} details Details returned from the api.
     */
    handleCaptcha: function ( details ) {
        const self = this,
            $input = this.$el.find( '.captcha-word' );

        if ( this.captchaShown ) {
            $input.val( '' );
            $input.attr( 'placeholder', this.options.captchaTryAgainMsg );
            setTimeout( function () {
                $input.attr( 'placeholder', self.options.captchaMsg );
            }, 2000 );
        }

        // handle different mime types different
        if ( details.mime.indexOf( 'image/' ) === 0 ) {
            // image based CAPTCHA's like provided by FancyCaptcha, ReCaptcha or similar
            this.$el.find( '.captcha-panel#question' ).detach();
            this.$el.find( '.captcha-panel img' ).attr( 'src', details.url );
        } else {
            // not image based CAPTCHA.
            this.$el.find( '.captcha-panel #image' ).detach();
            if ( details.mime.indexOf( 'text/html' ) === 0 ) {
                // handle mime type of HTML as HTML content (display as-is).
                // QuestyCaptcha now have default MIME type "text/html": see T147606
                this.$el.find( '.captcha-panel #question' ).html( details.question );
            } else {
                // handle mime types
                // (other than image based ones and HTML based ones)
                // as plain text by default.
                // e.g. MathCaptcha (solve a math formula) or
                // SimpleCaptcha (simple math formula)
                this.$el.find( '.captcha-panel #question' ).text( details.question );
            }
        }

        this.showHidden( '.save-header, .captcha-panel' );
        this.captchaShown = true;
    }
} );

module.exports = EditorOverlayBase;