Method findRangesForTextAttribute

src/trix/models/document.js:668–694

(attributeName, { withValue } = {})

  }

  findRangesForTextAttribute(attributeName, { withValue } = {}) {
    let position = 0
    let range = []
    const ranges = []

    const match = function(piece) {
      if (withValue) {
        return piece.getAttribute(attributeName) === withValue
      } else {
        return piece.hasAttribute(attributeName)
      }
    }

    this.getPieces().forEach((piece) => {
      const length = piece.getLength()
      if (match(piece)) {
        if (range[1] === position) {
          range[1] = position + length
        } else {
          ranges.push(range = [ position, position + length ])
        }
      }
      position += length
    })

    return ranges
  }

  locationFromPosition(position) {
    const location = this.blockList.findIndexAndOffsetAtPosition(Math.max(0, position))