executeHandleParagraphStyle function

bool executeHandleParagraphStyle(FluentDocument document, ParagraphStyle style)

Applies a paragraph style to the current paragraph or selection. The style works as a "base" - explicit fragment customizations always take precedence.

Implementation

bool executeHandleParagraphStyle(
  FluentDocument document,
  ParagraphStyle style,
) {
  // Save state for undo/redo
  document.saveState(description: 'Change paragraph style to ${style.name}');

  final root = document.content;
  final cursor = document.cursor;

  // If there's a selection, apply it to all paragraphs in the selection
  if (!cursor.isCollapsed) {
    final selection = resolveSelection(
      root,
      cursor.anchorId,
      cursor.anchorOffset,
      cursor.focusId,
      cursor.focusOffset,
      cachedStops: document.caretStops,
      cachedLines: document.logicalLines,
    );

    if (selection != null) {
      for (final node in selection.nodes) {
        final container = node.container;
        if (container is Paragraph) {
          _applyStyleToParagraph(container, style);
        }
      }
    }
  } else {
    // Collapsed cursor: apply to the current paragraph
    final container = findLogicalContainer(root, cursor.anchorId);
    if (container is Paragraph) {
      _applyStyleToParagraph(container, style);
    } else {
      // If we're not in a paragraph, only set the pending style
      document.pendingStyle = style;
      document.updateContent();
      return true;
    }
  }

  // Update the pending style
  document.pendingStyle = style;
  document.syncPendingFontWithCursor();
  document.updateContent();
  return true;
}