Extensions/Authoring/languageTextDirection

Extensions add specific functionality to Learnosity APIs. They rely on modules within LT being available.

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Adds the ability for authors to add non-default language content by surrounding text with the lang attribute. Essential for screen readers.

To remove an inline attribute, highlight the text and use the clear formatting button in the toolbar.

Right now there's no way to remove a block attribute, because they add surrounding <div> elements. The only way is to use the Source window in the rich-text editor.

Adding a custom button is a capability in Author API. Below is a code snippet of an Author API configuration object. Note the custom button is added under rich_text_editor.

You MUST use the object as defined below. Also, note the toolbar_settings which is required to place the custom button(s) where you want in the toolbar.

{
    "config": {
        "dependencies": {
            "question_editor_api": {
                "init_options": {
                    "rich_text_editor": {
                        "customButtons": [
                            {
                                "func": "LT.extensions.languageTextDirection.addLanguageAttribute",
                                "icon": "https://raw.githubusercontent.com/michaelsharman/LT/refs/heads/main/src/authoring/extensions/ui/languageTextDirection/assets/icon_language.svg",
                                "label": "Set language",
                                "name": "addLanguageAttribute"
                            }
                        ],
                        "toolbar_settings": {
                            "ltr_toolbar": [
                                {
                                    "items": ["Bold","Italic","Underline","-","TextColor","-", "LrnUnderlinedIndicator","-","RemoveFormat","FontSize"],
                                    "name": "basicstyles"
                                },
                                {
                                    "items": ["NumberedList","BulletedList","-","Indent","Outdent"],
                                    "name": "list"
                                },
                                {
                                    "items": ["JustifyLeft","JustifyCenter","JustifyRight","JustifyBlock"],
                                    "name": "justify"
                                },
                                {
                                    "items": ["Link","Unlink"],
                                    "name": "link"
                                },
                                {
                                    "items": ["Image","LrnMath","Table","Blockquote","SpecialChar"],
                                    "name": "insert"
                                },
                                {
                                    "items": ["LrnSimpleFeature"],
                                    "name": "simplefeature"
                                },
                                {
                                    "items": ["LrnResource"],
                                    "name": "resource"
                                },
                                {
                                    "items": ["LrnEditAriaLabel","LrnPopupContent"],
                                    "name": "editAriaLabel"
                                },
                                {
                                    "name": "custombuttons"
                                },
                                {
                                    "items": ["Undo","Redo"],
                                    "name": "clipboard"
                                },
                                {
                                    "items": ["Styles"],
                                    "name": "style"
                                },
                                {
                                    "items": ["Sourcedialog"],
                                    "name": "mode"
                                },
                                {
                                    "items": ["lrn_datatable"],
                                    "name": "data"
                                }
                            ]
                        }
                    }
                }
            }
        }
    }
}

import { LT } from '@caspingus/lt/src/authoring/index';

LT.init(authorApp); // Set up LT with the Author API application instance variable
LT.extensions.languageTextDirection.run();