OTSSignsTheme/ots-signs/views/layout-designer-page.twig

{#
/**
 * OTS Signs — Layout Designer Page (with embed mode support)
 *
 * Overrides the Xibo core layout-designer-page.twig to add an embeddable
 * layout editor mode for use inside an iframe in external applications.
 *
 * Usage:
 *   Normal:  /layout/designer/{layoutId}
 *   Embed:   /layout/designer/{layoutId}?embed=1
 *
 * In embed mode:
 *   - All CMS navigation is hidden (sidebar, topbar, help pane)
 *   - Back/Exit buttons in the editor toolbar are hidden
 *   - postMessage events are sent to the parent window:
 *       xibo:editor:ready, xibo:editor:save, xibo:editor:publish, xibo:editor:exit
 *   - Parent can send: xibo:editor:requestSave
 *
 * Copyright (C) 2020-2026 Xibo Signage Ltd
 * Copyright (C) 2026 Oribi Technology Services
 *
 * Licensed under the GNU Affero General Public License v3.0
 */
#}
{% extends "authed.twig" %}
{% import "inline.twig" as inline %}

{% block title %}{{ "Layout Editor"|trans }} | {% endblock %}

{% set hideNavigation = "1" %}
{% set forceHide = true %}

{% block headContent %}
    {{ parent() }}

    {# Embed mode: early body class to prevent FOUC #}
    <script nonce="{{ cspNonce }}">
    (function(){
        try {
            var params = new URLSearchParams(window.location.search);
            var isEmbed = params.get('embed') === '1' || window !== window.parent;
            if (isEmbed) {
                document.documentElement.classList.add('ots-embed-mode');
            }
        } catch(e) {
            // Cross-origin iframe detection may throw — treat as embed
            document.documentElement.classList.add('ots-embed-mode');
        }
    })();
    </script>

    <style nonce="{{ cspNonce }}">
    /* ── Embed mode styles ──────────────────────────────────── */

    /* Hide Back/Exit button area */
    .ots-embed-mode .back-button {
        display: none !important;
    }

    /* Hide the help pane */
    .ots-embed-mode #help-pane {
        display: none !important;
    }

    /* Hide floating page actions (notification bell, user menu) */
    .ots-embed-mode .ots-page-actions {
        display: none !important;
    }

    /* Remove content wrapper padding/margins for full-bleed editor */
    .ots-embed-mode #content-wrapper {
        padding: 0 !important;
        margin: 0 !important;
    }

    .ots-embed-mode .page-content {
        padding: 0 !important;
        margin: 0 !important;
    }

    .ots-embed-mode .page-content > .row {
        margin: 0 !important;
    }

    .ots-embed-mode .page-content > .row > .col-sm-12 {
        padding: 0 !important;
    }

    /* Full viewport height for the editor */
    .ots-embed-mode body,
    .ots-embed-mode #layout-editor {
        min-height: 100vh;
    }

    /* Hide the top-bar options dropdown (Publish/Checkout/Discard/etc.) */
    .ots-embed-mode .editor-top-bar .editor-options-dropdown {
        display: none !important;
    }

    /* Hide the editor jump list (layout switcher) */
    .ots-embed-mode .editor-top-bar #layoutJumpListContainer {
        display: none !important;
    }
    </style>
{% endblock %}

{% block pageContent %}

    <!-- Editor structure -->
    <div id="layout-editor" data-published-layout-id="{{ publishedLayoutId }}" data-layout-id="{{ layout.layoutId }}" data-layout-help={{ help }}></div>

    {# Skeleton loading screen — replaced by editor once editor-opened class fires on body #}
    <div id="ots-editor-skeleton" aria-hidden="true">
        <div class="ots-skeleton-topbar">
            <div class="ots-skeleton-topbar-left">
                <div class="ots-skeleton-chip"></div>
                <div class="ots-skeleton-chip" style="width:80px"></div>
            </div>
            <div class="ots-skeleton-topbar-right">
                <div class="ots-skeleton-chip" style="width:150px"></div>
            </div>
        </div>
        <div class="ots-skeleton-body">
            <div class="ots-skeleton-left-rail">
                <div class="ots-skeleton-icon-dot"></div>
                <div class="ots-skeleton-icon-dot"></div>
                <div class="ots-skeleton-icon-dot"></div>
                <div class="ots-skeleton-icon-dot"></div>
            </div>
            <div class="ots-skeleton-canvas-area">
                <div class="ots-skeleton-canvas-box"></div>
            </div>
            <div class="ots-skeleton-props">
                <div class="ots-skeleton-prop-group">
                    <div class="ots-skeleton-prop-label"></div>
                    <div class="ots-skeleton-prop-swatch-row">
                        <div class="ots-skeleton-prop-swatch"></div>
                        <div class="ots-skeleton-prop-field"></div>
                    </div>
                </div>
                <div class="ots-skeleton-prop-group">
                    <div class="ots-skeleton-prop-label"></div>
                    <div class="ots-skeleton-prop-field" style="height:70px"></div>
                </div>
                <div class="ots-skeleton-prop-group">
                    <div class="ots-skeleton-prop-label"></div>
                    <div class="ots-skeleton-prop-field"></div>
                </div>
                <div class="ots-skeleton-prop-group">
                    <div class="ots-skeleton-prop-label" style="width:35%"></div>
                    <div class="ots-skeleton-prop-field"></div>
                </div>
            </div>
        </div>
        <div class="ots-skeleton-bottombar">
            <div class="ots-skeleton-chip" style="width:120px; opacity:.5"></div>
        </div>
    </div>

{% endblock %}

{% block javaScript %}
    {# Add common files #}
    {% include "editorTranslations.twig" %}
    {% include "editorVars.twig" %}

    <script src="{{ theme.rootUri() }}dist/layoutEditor.bundle.min.js?v={{ version }}&rev={{revision}}" nonce="{{ cspNonce }}"></script>
    <script src="{{ theme.rootUri() }}dist/playlistEditor.bundle.min.js?v={{ version }}&rev={{revision}}" nonce="{{ cspNonce }}"></script>
    <script src="{{ theme.rootUri() }}dist/codeEditor.bundle.min.js?v={{ version }}&rev={{revision}}" nonce="{{ cspNonce }}"></script>
    <script src="{{ theme.rootUri() }}dist/wysiwygEditor.bundle.min.js?v={{ version }}&rev={{revision}}" nonce="{{ cspNonce }}"></script>
    <script src="{{ theme.rootUri() }}dist/editorCommon.bundle.min.js?v={{ version }}&rev={{revision}}" nonce="{{ cspNonce }}"></script>

    <script type="text/javascript" nonce="{{ cspNonce }}">
        var previewJwt = "{{ previewJwt }}";

        {% autoescape "js" %}
            {# Custom translations #}
            var layoutEditorHelpLink = "{{ help }}";

            var layoutEditorTrans = {
                back: "{% trans "Back" %}",
                exit: "{% trans "Exit" %}",
                cancel: "{% trans "Cancel" %}",
                toggleFullscreen: "{% trans "Toggle Fullscreen Mode" %}",
                layerManager: "{% trans "Layer Manager" %}",
                snapToGrid: "{% trans "Snap to Grid" %}",
                snapToBorders: "{% trans "Snap to Borders" %}",
                snapToElements: "{% trans "Snap to Elements" %}",
                newTitle: "{% trans "New" %}",
                publishTitle: "{% trans "Publish" %}",
                discardTitle: "{% trans "Discard draft" %}",
                deleteTitle: "{% trans "Delete" %}",
                publishMessage: "{% trans "Are you sure you want to publish this Layout? If it is already in use the update will automatically get pushed." %}",
                checkoutTitle: "{% trans "Checkout" %}",
                scheduleTitle: "{% trans "Schedule" %}",
                clearLayout: "{% trans "Clear Canvas" %}",
                unlockTitle: "{% trans "Unlock" %}",
                saveTemplateTitle: "{% trans "Save Template" %}",
                readOnlyModeTitle: "{% trans "Read Only" %}",
                readOnlyModeMessage: "{% trans "You are viewing this Layout in read only mode, checkout by clicking on this message or from the Options menu above!" %}",
                lockedModeTitle: "{% trans "Locked" %}",
                lockedModeMessage: "{% trans "This is being locked by another user. Lock expires on: [expiryDate]" %}",
                checkoutMessage: "{% trans "Not editable, please checkout!" %}",
                unlockMessage: "{% trans "The current layout will be unlocked to other users. You will also be redirected to the Layouts page" %}",
                viewModeTitle: "{% trans "View" %}",
                actions: "{% trans "Actions" %}",
                welcomeModalMessage: "{% trans "This is published and cannot be edited. You can checkout for editing below, or continue to view it in a read only mode." %}",
                showingSampleData: "{% trans "Showing sample data" %}",
                emptyElementData: "{% trans "Has empty data" %}"
            };

            var viewerTrans = {
                inlineEditor: "{% trans "Inline Editor" %}",
                nextWidget: "{% trans "Next widget" %}",
                previousWidget: "{% trans "Previous widget" %}",
                addWidget: "{% trans "Add Widget" %}",
                editGroup: "{% trans "Edit Group" %}",
                editPlaylist: "{% trans "Edit Playlist" %}",
                prev: '{{ "Previous Widget"|trans }}',
                next: '{{ "Next Widget"|trans }}',
                empty: '{{ "Empty Playlist"|trans }}',
                invalidRegion: '{{ "Invalid Region"|trans }}',
                editPlaylistTitle: '{{ "Edit Playlist"|trans }}',
                dynamicPlaylistTitle: '{{ "Dynamic Playlist"|trans }}'
            };

            var timelineTrans = {
                zoomIn: "{% trans "Zoom in" %}",
                zoomOut: "{% trans "Zoom out" %}",
                resetZoom: "{% trans "Reset zoom" %}",
                zoomDelta: "{% trans "Visible area time span" %}",
                hiddenTimeruler: "{% trans "Zoom out to see timeruler!" %}",
                emptyTimeline: "{% trans "No Regions: Add a Region to start creating content by clicking here or the Edit Layout icon below!" %}",
                zoomFindSelected: "{% trans "Scroll to selected widget" %}",
                startTime: "{% trans "Visible area start time" %}",
                endTime: "{% trans "Visible area end time" %}",
                layoutName: "{% trans "Layout name" %}",
                layoutDuration: "{% trans "Layout duration" %}",
                layoutDimensions: "{% trans "Layout dimensions" %}",
                addToThisPosition: "{% trans "Add to this position" %}",
                hiddenContentInWidget: "{% trans "Zoom in to see more details!" %}",
                editRegion: "{% trans "Edit region" %}",
                openRegionAsPlaylist: "{% trans "Open as playlist" %}",
                widgetActions: "{% trans "Widget Actions:" %}",
                regionActions: "{% trans "Region Actions:" %}"
            };

            var bottombarTrans = {
                edit: "{% trans "Edit layout regions" %}",
                addRegion: "{% trans "Add" %}",
                addRegionDesc: "{% trans "Add a new region" %}",
                deleteRegion: "{% trans "Delete region" %}",
                undo: "{% trans "Undo" %}",
                undoDesc: "{% trans "Revert last change" %}",
                close: "{% trans "Close" %}",
                closeDesc: "{% trans "Return to Layout View" %}",
                save: "{% trans "Save" %}",
                saveDesc: "{% trans "Save changes" %}",
                backToLayout: "{% trans "Go back to Layout view" %}",
                saveEditorChanges: "{% trans "Save editor changes" %}",
                playPreviewLayout: "{% trans "Play Layout preview" %}",
                playPreviewLayoutPOTitle: "{% trans "Preview stopped!" %}",
                playPreviewLayoutPOMessage: "{% trans "Click to Play again" %}",
                editLayout: "{% trans "Edit Layout" %}",
                stopPreviewLayout: "{% trans "Stop Layout preview" %}",
                nextWidget: "{% trans "Next widget" %}",
                previousWidget: "{% trans "Previous widget" %}",
                widgetName: "{% trans "Widget Name" %}",
                widgetType: "{% trans "Widget Type" %}",
                widgetTemplate: "{% trans "Widget Template Name" %}",
                elementName: "{% trans "Element Name" %}",
                elementMediaInfoName: "{{ "Media Name" |trans }}",
                elementMediaInfoId: "{{ "Media ID" |trans }}",
                elementGroupName: "{% trans "Element Group Name" %}",
                regionName: "{% trans "Region Name" %}",
                templateName: "{% trans "Template" %}",
                objectType: {
                    layout: "{{ "Layout" |trans }}",
                    region: "{{ "Region" |trans }}",
                    zone: "{{ "Zone" |trans }}",
                    playlist: "{{ "Playlist" |trans }}",
                    widget: "{{ "Widget" |trans }}",
                    element: "{{ "Element" |trans }}",
                    "element-group": "{{ "Element Group" |trans }}"
                },
                tools: {
                    audio: {
                        name: "{{ "Audio" |trans }}",
                        description: "{{ "Upload Audio files to assign to Widgets"|trans }}"
                    },
                    transitionIn: {
                        name: "{{ "Transition In" |trans }}",
                        description: "{{ "Apply a Transition type for the start of a media item"|trans }}"
                    },
                    transitionOut: {
                        name: "{{ "Transition Out" |trans }}",
                        description: "{{ "Apply a Transition type for the end of a media item"|trans }}"
                    },
                    permissions: {
                        name: "{{ "Sharing" |trans }}",
                        description: "{{ "Set View, Edit and Delete Sharing for Widgets and Playlists"|trans }}"
                    }
                }
            };
        {% endautoescape %}
    </script>

    <script type="text/javascript" nonce="{{ cspNonce }}">
        /**
         * Setup the background form.
         */
        function backGroundFormSetup(dialog) {
            var $backgroundImageId = $('[name="backgroundImageId"]', dialog);
            var notFoundIcon = $('#bg_not_found_icon', dialog);
            var bgImageFileName = $('#bg_media_name', dialog);
            var saveButton = $('button#save', dialog);
            var initialBackgroundImageId = $backgroundImageId.val();
            var backgroundChanged = false;
            var mediaName = '';

            function backgroundImageChange() {
                var id = $backgroundImageId.val();
                var isNotDefined = [0, ''].indexOf(id) !== -1;

                $('#backgroundRemoveButton').toggleClass('disabled', isNotDefined);

                if (isNotDefined) {
                    notFoundIcon.show();
                    bgImageFileName.hide();
                } else {
                    notFoundIcon.hide();
                    bgImageFileName.show();

                    if(mediaName) {
                        bgImageFileName.html(mediaName);
                    }

                    if (id !== initialBackgroundImageId) {
                        saveButton.trigger('click');
                    }
                }

                if (id !== initialBackgroundImageId) {
                    backgroundChanged = true;
                }
            }

            function backgroundImageHandleDrop(mediaToAdd, fromProvider) {
                if(fromProvider) {
                    lD.importFromProvider([mediaToAdd]).then((res) => {
                        $backgroundImageId.val(res[0]).trigger('change');
                    }).catch(function() {
                        toastr.error(errorMessagesTrans.importingMediaFailed);
                    });
                } else {
                    $backgroundImageId.val(mediaToAdd).trigger('change');
                }

                lD.toolbar.deselectCardsAndDropZones();
            }

            $backgroundImageId.change(backgroundImageChange);
            backgroundImageChange();

            $('#backgroundUploadButton').on('click', function(e) {
                layoutEditBackgroundButtonClicked(e, dialog);
            });

            $('#backgroundRemoveButton').on('click', function(e) {
                if(!$(this).hasClass('disabled')) {
                    $backgroundImageId.val('').trigger('change');
                }
            });

            $('.background-image-add').droppable({
                greedy: true,
                tolerance: 'pointer',
                accept: function(el) {
                    return ($(el).data('type') === 'media' && $(el).data('subType') === 'image');
                },
                drop: _.debounce(function(event, ui) {
                    var $draggable = $(ui.draggable[0]);
                    bgImageFileName.html($draggable.data('title'));
                    mediaName = $draggable.data('cardTitle');

                    if($draggable.hasClass('from-provider')) {
                        backgroundImageHandleDrop($draggable.data('providerData'), true);
                    } else {
                        backgroundImageHandleDrop($draggable.data('mediaId'));
                    }
                }, 200)
            });

            $('.background-image-drop').on('click', function() {
                var selectedCard = lD.toolbar.selectedCard;
                var fromProvider = selectedCard.hasClass('from-provider');
                var cardData = (fromProvider) ? selectedCard.data('providerData') : selectedCard.data('mediaId');

                bgImageFileName.html(selectedCard.data('cardTitle'));
                mediaName = selectedCard.data('cardTitle');

                backgroundImageHandleDrop(cardData, fromProvider);
            });

            $("#layoutEditForm").submit(function(e) {
                e.preventDefault();
                var form = $(this);

                $.ajax({
                    type: form.attr("method"),
                    url: form.attr("action"),
                    cache: false,
                    dataType: "json",
                    data: $(form).serialize(),
                    success: function(xhr, textStatus, error) {
                        XiboSubmitResponse(xhr, form);

                        if (xhr.success) {
                            var layout = $("div#layout");

                            if (layout.length > 0) {
                                var color = form.find("#backgroundColor").val();
                                layout.data().backgroundColor = color;
                                layout.css("background-color", color);

                                if (backgroundChanged)
                                    window.location.reload();
                            } else {
                                if (backgroundChanged && typeof(table) !== 'undefined' && table.hasOwnProperty('ajax'))
                                    table.ajax.reload(null, false);
                            }
                        }
                    },
                    error: function(xhr, textStatus, errorThrown) {
                        SystemMessage(xhr.responseText, false);
                    }
                });
            })
        };

        /**
         * Layout edit background add image button
         */
        function layoutEditBackgroundButtonClicked(e, dialog) {
            e.preventDefault();

            openUploadForm({
                url: $(e.target).data().addNewBackgroundUrl,
                title: "{% trans "Add Background Image" %}",
                videoImageCovers: false,
                buttons: {
                    main: {
                        label: "{% trans "Done" %}",
                        className: "btn-primary btn-bb-main",
                        callback: function () {
                            XiboDialogClose();
                        }
                    }
                },
                templateOptions: {
                    multi: false,
                    trans: {
                        addFiles: "{% trans "Browse/Add Image" %}",
                        startUpload: "{% trans "Start Upload" %}",
                        cancelUpload: "{% trans "Cancel Upload" %}"
                    },
                    upload: {
                        maxSize: {{ libraryUpload.maxSize }},
                        maxSizeMessage: "{{ libraryUpload.maxSizeMessage }}",
                        validExt: "{{ libraryUpload.validImageExt }}"
                    }
                },
                uploadDoneEvent: function (data) {
                    var mediaId = data.result.files[0].mediaId;

                    if ($(dialog).find('[name="backgroundImageId"]').length === 0) {
                        $('<input>').attr({
                            type: 'hidden',
                            name: 'backgroundImageId',
                            value: mediaId
                        }).appendTo(dialog);
                    } else {
                        $('[name="backgroundImageId"]').val(mediaId);
                    }

                    dialog.find("#bg_not_found_icon").hide();
                    dialog.find("#backgroundRemoveButton").removeClass("disabled");

                    XiboDialogClose();
                    $('[name="backgroundImageId"]').trigger('change');
                }
            });
        }

        function layoutPublishFormOpen() {
        }

        function layoutEditFormSaved() {
            lD.reloadData(lD.layout, {
                refreshEditor: true,
            });
        }
    </script>

    {# ── Skeleton dismiss + keyboard shortcut hints ──────────── #}
    <script type="text/javascript" nonce="{{ cspNonce }}">
    (function() {
        'use strict';

        // ── Skeleton dismiss ─────────────────────────────────────
        var skeleton = document.getElementById('ots-editor-skeleton');
        if (skeleton) {
            if (document.body.classList.contains('editor-opened')) {
                skeleton.parentNode.removeChild(skeleton);
            } else {
                var skeletonObs = new MutationObserver(function() {
                    if (document.body.classList.contains('editor-opened')) {
                        skeleton.classList.add('ots-skeleton-done');
                        setTimeout(function() {
                            if (skeleton.parentNode) skeleton.parentNode.removeChild(skeleton);
                        }, 380);
                        skeletonObs.disconnect();
                    }
                });
                skeletonObs.observe(document.body, { attributes: true, attributeFilter: ['class'] });
            }
        }

        // ── Keyboard shortcut hints (title attrs on toolbar buttons) ──
        var hints = [
            { sel: '#undoBtn',          hint: 'Undo (Ctrl+Z)' },
            { sel: '#fullscreenBtn',    hint: 'Toggle Fullscreen (F)' },
            { sel: '#layerManagerBtn',  hint: 'Layer Manager (L)' }
        ];

        function applyKbHints() {
            hints.forEach(function(h) {
                try {
                    document.querySelectorAll(h.sel).forEach(function(el) {
                        if (!el.title) el.title = h.hint;
                    });
                } catch(ignore) {}
            });
        }

        var kbObs = new MutationObserver(function() {
            if (document.body.classList.contains('editor-opened')) {
                setTimeout(applyKbHints, 1500);
                kbObs.disconnect();
            }
        });
        kbObs.observe(document.body, { attributes: true, attributeFilter: ['class'] });
    })();
    </script>

    {# ── Embed mode: postMessage bridge ──────────────────────── #}
    <script type="text/javascript" nonce="{{ cspNonce }}">
    (function() {
        'use strict';

        var params = new URLSearchParams(window.location.search);
        var isEmbed = false;

        try {
            isEmbed = params.get('embed') === '1' || window !== window.parent;
        } catch(e) {
            isEmbed = true;
        }

        if (!isEmbed) return;

        // Add embed class to body once DOM is ready
        document.body.classList.add('ots-embed-mode');

        var layoutId = document.getElementById('layout-editor')
            ? document.getElementById('layout-editor').getAttribute('data-layout-id')
            : null;

        // TODO: For production, restrict targetOrigin to your app's domain
        var targetOrigin = '*';

        /**
         * Send a message to the parent window.
         */
        function sendToParent(type, data) {
            if (window.parent && window.parent !== window) {
                var message = { type: type, layoutId: layoutId };
                if (data) {
                    for (var key in data) {
                        if (data.hasOwnProperty(key)) {
                            message[key] = data[key];
                        }
                    }
                }
                window.parent.postMessage(message, targetOrigin);
            }
        }

        // ── Intercept editor save/publish via ajaxComplete ──────
        $(document).ajaxComplete(function(event, xhr, settings) {
            if (!settings || !settings.url) return;

            try {
                var response = xhr.responseJSON || {};
                if (!response.success) return;

                // Detect layout save (PUT to layout endpoint)
                if (settings.type === 'PUT' && settings.url.match(/\/layout\/\d+/)) {
                    sendToParent('xibo:editor:save', { url: settings.url });
                }

                // Detect layout publish
                if (settings.url.match(/\/layout\/publish\/\d+/)) {
                    sendToParent('xibo:editor:publish', { url: settings.url });
                }

                // Detect checkout
                if (settings.url.match(/\/layout\/checkout\/\d+/)) {
                    sendToParent('xibo:editor:checkout', {
                        url: settings.url,
                        newLayoutId: response.id || null
                    });
                }
            } catch(e) {
                // Silently ignore parse errors
            }
        });

        // ── Intercept Back/Exit navigation ──────────────────────
        // The editor sets window.location.href to exitURL — intercept it
        $(document).on('click', '.back-button a, .editor-close-btn', function(e) {
            e.preventDefault();
            e.stopPropagation();
            sendToParent('xibo:editor:exit', {});
        });

        // ── Listen for commands from parent ─────────────────────
        window.addEventListener('message', function(event) {
            var msg = event.data;
            if (!msg || typeof msg.type !== 'string') return;

            switch (msg.type) {
                case 'xibo:editor:requestSave':
                    // Trigger the properties panel save if pending
                    if (typeof lD !== 'undefined' && lD.propertiesPanel && lD.propertiesPanel.toSave) {
                        lD.propertiesPanel.save({ target: lD.selectedObject });
                    }
                    break;

                case 'xibo:editor:requestPublish':
                    if (typeof lD !== 'undefined' && lD.showPublishScreen) {
                        lD.showPublishScreen();
                    }
                    break;

                case 'xibo:editor:setTheme': {
                    var newMode = msg.mode;
                    if (newMode === 'light') {
                        document.documentElement.classList.add('ots-light-mode');
                        document.body.classList.add('ots-light-mode');
                    } else {
                        document.documentElement.classList.remove('ots-light-mode');
                        document.body.classList.remove('ots-light-mode');
                    }
                    try { localStorage.setItem('ots-theme-mode', newMode); } catch(ignore) {}
                    break;
                }
            }
        });

        // ── Notify parent when editor is ready ──────────────────
        // Fire xibo:editor:error if editor hasn't opened within 15 s
        var initErrTimeout = setTimeout(function() {
            if (!document.body.classList.contains('editor-opened')) {
                sendToParent('xibo:editor:error', { reason: 'timeout' });
            }
        }, 15000);

        var readyObserver = new MutationObserver(function(mutations) {
            if (document.body.classList.contains('editor-opened')) {
                clearTimeout(initErrTimeout);
                sendToParent('xibo:editor:ready', {
                    theme: document.documentElement.classList.contains('ots-light-mode') ? 'light' : 'dark'
                });
                readyObserver.disconnect();
            }
        });

        if (document.body.classList.contains('editor-opened')) {
            clearTimeout(initErrTimeout);
            sendToParent('xibo:editor:ready', {
                theme: document.documentElement.classList.contains('ots-light-mode') ? 'light' : 'dark'
            });
        } else {
            readyObserver.observe(document.body, { attributes: true, attributeFilter: ['class'] });
        }
    })();
    </script>
{% endblock %}