Method applyBlockAttributeAtRange

src/trix/models/document.js:306–326

(attributeName, value, range)

  }

  applyBlockAttributeAtRange(attributeName, value, range) {
    const expanded = this.expandRangeToLineBreaksAndSplitBlocks(range)
    let document = expanded.document
    range = expanded.range
    const blockConfig = getBlockConfig(attributeName)

    if (blockConfig.listAttribute) {
      document = document.removeLastListAttributeAtRange(range, { exceptAttributeName: attributeName })
      const converted = document.convertLineBreaksToBlockBreaksInRange(range)
      document = converted.document
      range = converted.range
    } else if (blockConfig.exclusive) {
      document = document.removeBlockAttributesAtRange(range)
    } else if (blockConfig.terminal) {
      document = document.removeLastTerminalAttributeAtRange(range)
    } else {
      document = document.consolidateBlocksAtRange(range)
    }

    return document.addAttributeAtRange(attributeName, value, range)
  }

  removeLastListAttributeAtRange(range, options = {}) {
    let { blockList } = this