All files / roosterjs-content-model-dom/lib/modelToDom/handlers handleFormatContainer.ts

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import { applyFormat } from '../utils/applyFormat';
import { isBlockGroupEmpty } from '../../modelApi/common/isEmpty';
import { reuseCachedElement } from '../../domUtils/reuseCachedElement';
import { stackFormat } from '../utils/stackFormat';
import type {
    ContentModelBlockFormat,
    ContentModelBlockHandler,
    ContentModelFormatContainer,
    ContentModelSegmentFormat,
    ModelToDomContext,
} from 'roosterjs-content-model-types';
 
const PreChildFormat: ContentModelSegmentFormat & ContentModelBlockFormat = {
    fontFamily: 'monospace',
    whiteSpace: 'pre',
};
 
/**
 * @internal
 */
export const handleFormatContainer: ContentModelBlockHandler<ContentModelFormatContainer> = (
    doc: Document,
    parent: Node,
    container: ContentModelFormatContainer,
    context: ModelToDomContext,
    refNode: Node | null
) => {
    let element = context.allowCacheElement ? container.cachedElement : undefined;
 
    if (element) {
        refNode = reuseCachedElement(parent, element, refNode, context.rewriteFromModel);
 
        context.modelHandlers.blockGroupChildren(doc, element, container, context);
    } else if (!isBlockGroupEmpty(container)) {
        const containerNode = doc.createElement(container.tagName);
 
        if (context.allowCacheElement) {
            container.cachedElement = containerNode;
        }
 
        parent.insertBefore(containerNode, refNode);
        context.rewriteFromModel.addedBlockElements.push(containerNode);
 
        stackFormat(context, container.tagName, () => {
            applyFormat(containerNode, context.formatAppliers.container, container.format, context);
            applyFormat(
                containerNode,
                context.formatAppliers.segmentOnBlock,
                container.format,
                context
            );
 
            applyFormat(containerNode, context.formatAppliers.container, container.format, context);
        });
 
        stackFormat(
            context,
            container.format.direction ? { direction: container.format.direction } : null,
            () => {
                if (container.tagName == 'pre') {
                    stackFormat(context, PreChildFormat, () => {
                        context.modelHandlers.blockGroupChildren(
                            doc,
                            containerNode,
                            container,
                            context
                        );
                    });
                } else {
                    context.modelHandlers.blockGroupChildren(
                        doc,
                        containerNode,
                        container,
                        context
                    );
                }
            }
        );
 
        element = containerNode;
    }
 
    if (element) {
        context.onNodeCreated?.(container, element);
    }
 
    return refNode;
};