Attachment

open class Attachment : NSTextAttachment, BoundsObserving

An attachment can be used as a container for any view object. Based on the AttachmentSize provided, the attachment automatically renders itself alongside the text in EditorView. Attachment also provides helper functions like deleteFromContainer and rangeInContainer

  • id

    Identifier that uniquely identifies an attachment. Auto-generated.

    Declaration

    Swift

    public let id: String

  • Governs if the attachment should be selected before being deleted. When true, tapping the backspace key the first time on range containing Attachment will only select the attachment i.e. show as highlighted. Tapping the backspace again will delete the attachment. If the value is false, the attachment will be deleted on the first backspace itself.

    Declaration

    Swift

    public var selectBeforeDelete: Bool

  • Estimated height for attachment when it is rendering asynchronously. This will result in a blank placeholder with given height for the attachment to render. When rendering completed, the Editor content will readjust to accomodate the actual height of Attachment

    Declaration

    Swift

    public var estimatedHeight: CGFloat

  • Undocumented

    Declaration

    Swift

    public var needsDeferredRendering: Bool { get }

  • Determines if attachment should be selected on tap or not. Defaults to false.

    Note

    Selection only takes place if the view in attachment does not handle touch i.e. if a button in AttachmentView is tapped, selectOnTap will not work as the tap will be handled by the button.

    Declaration

    Swift

    public var selectOnTap: Bool

  • Determines the appearance for the selection rectangle of the attachment

    Declaration

    Swift

    public var selectionStyle: AttachmentSelectionStyle { get set }

  • Undocumented

    Declaration

    Swift

    public var isBlockType: Bool { get }

  • Undocumented

    Declaration

    Swift

    public var isInlineType: Bool { get }

  • Attributed string representation of the Attachment. This can be used directly to replace a range of text in EditorView

    Usage Example

    let attachment = Attachment(PanelView(), size: .fullWidth)
let attrString = NSMutableAttributedString(string: "This is a test string")
attrString.append(attachment.string)
editor.attributedText = attrString

    Declaration

    Swift

    public var string: NSAttributedString { get }

  • Name of the content contained within the Attachment

    Declaration

    Swift

    public var name: EditorContent.Name? { get }

  • Undocumented

    Declaration

    Swift

    public var contentEditors: [EditorView] { get }

  • Determines if Attachment is rendering async but is not yet rendered

    Declaration

    Swift

    public var isPendingAsyncRendering: Bool { get }

  • Determines if attachment is in selected range in the container EditorView

    Declaration

    Swift

    public var isInSelectedRange: Bool { get }

  • Undocumented

    Declaration

    Swift

    public var contentSize: CGSize? { get }

  • EditorView containing this attachment

    Declaration

    Swift

    public private(set) weak var containerEditorView: EditorView? { get }

  • Offsets for the attachment. Can be used to align attachment with the text. Defaults to .zero

    Declaration

    Swift

    public weak var offsetProvider: AttachmentOffsetProviding?

  • Name of the content for the EditorView

    See also

    EditorView

    Declaration

    Swift

    public var containerContentName: EditorContent.Name? { get }

  • Undocumented

    Declaration

    Swift

    public private(set) var contentView: UIView? { get set }

  • Bounds of the container

    Declaration

    Swift

    public var containerBounds: CGRect? { get }

  • The bounds rectangle, which describes the attachment’s location and size in its own coordinate system.

    Declaration

    Swift

    public override var bounds: CGRect { get set }

  • Initializes an attachment with the image provided.

    Note

    Image and Size can be updated by invoking updateImage(image: size:) at any time

    Declaration

    Swift

    public init(image: AttachmentImage)

    Parameters

    image

    Image to be used to display in the attachment. Image is rendered as Inline content.

  • Initializes the attachment with the given content view

    Declaration

    Swift

    public init(_ contentView: AttachmentView, size: AttachmentSize, backgroundColor: UIColor? = nil)

    Parameters

    contentView

    Content view to be hosted within the attachment
    size

    Size rule for attachment
    backgroundColor

    Background color of attachment. Can be used with DEBUG to track the attachment size/location with respect to content view

  • Selects the attachment in Editor.

    Declaration

    Swift

    public func setSelected(_ isSelected: Bool)

    Parameters

    isSelected

    true to set selected, else false

  • Causes invalidation of layout of the attachment when the containing view bounds are changed

    See also

    BoundsObserving

    Declaration

    Swift

    public func didChangeBounds(_ bounds: CGRect, oldBounds: CGRect)

    Parameters

    bounds

    Updated bounds

  • Removes this attachment from the EditorView it is contained in.

    Declaration

    Swift

    public func removeFromContainer()

  • Range of this attachment in it’s container

    Declaration

    Swift

    public func rangeInContainer() -> NSRange?

  • Invoked when attributes are added in the containing EditorView in the range of string in which this attachment is contained.

    Declaration

    Swift

    open func addedAttributesOnContainingRange(rangeInContainer range: NSRange, attributes: [NSAttributedString.Key : Any])

    Parameters

    range

    Affected range
    attributes

    Attributes applied

  • Declaration

    Swift

    open func removedAttributesFromContainingRange(rangeInContainer range: NSRange, attributes: [NSAttributedString.Key])

    Parameters

    range

    Affected range
    attributes

    Attributes removed

  • Returns the calculated bounds for the attachment based on size rule and content view provided during initialization.

    Declaration

    Swift

    public override func attachmentBounds(for textContainer: NSTextContainer?, proposedLineFragment lineFrag: CGRect, glyphPosition position: CGPoint, characterIndex charIndex: Int) -> CGRect

    Parameters

    textContainer

    Text container for attachment
    lineFrag

    Line fragment containing the attachment
    position

    Position in the text container.
    charIndex

    Character index

  • Undocumented

    Declaration

    Swift

    public func update(with image: AttachmentImage)

  • Undocumented

    Declaration

    Swift

    public func update(_ contentView: AttachmentView, size: AttachmentSize)

  • Undocumented

    Declaration

    Swift

    open func getFullTextRangeIdentificationAttributes() -> [NSAttributedString.Key : Any]

  • Invalidates the current layout and triggers a layout update.

    Declaration

    Swift

    public func invalidateLayout()