130 lines
3.7 KiB
Swift
130 lines
3.7 KiB
Swift
//
|
|
// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
|
|
//
|
|
|
|
import Foundation
|
|
import PromiseKit
|
|
|
|
class AddMoreRailItem: GalleryRailItem {
|
|
func buildRailItemView() -> UIView {
|
|
let view = UIView()
|
|
view.backgroundColor = UIColor.black.withAlphaComponent(0.33)
|
|
|
|
let iconView = UIImageView(image: #imageLiteral(resourceName: "ic_plus_24").withRenderingMode(.alwaysTemplate))
|
|
iconView.tintColor = .ows_white
|
|
view.addSubview(iconView)
|
|
iconView.setCompressionResistanceHigh()
|
|
iconView.setContentHuggingHigh()
|
|
iconView.autoCenterInSuperview()
|
|
|
|
return view
|
|
}
|
|
}
|
|
|
|
class SignalAttachmentItem: Hashable {
|
|
|
|
enum SignalAttachmentItemError: Error {
|
|
case noThumbnail
|
|
}
|
|
|
|
let attachment: SignalAttachment
|
|
|
|
// This might be nil if the attachment is not a valid image.
|
|
var imageEditorModel: ImageEditorModel?
|
|
|
|
init(attachment: SignalAttachment) {
|
|
self.attachment = attachment
|
|
|
|
// Try and make a ImageEditorModel.
|
|
// This will only apply for valid images.
|
|
if ImageEditorModel.isFeatureEnabled,
|
|
let dataUrl: URL = attachment.dataUrl,
|
|
dataUrl.isFileURL {
|
|
let path = dataUrl.path
|
|
do {
|
|
imageEditorModel = try ImageEditorModel(srcImagePath: path)
|
|
} catch {
|
|
// Usually not an error; this usually indicates invalid input.
|
|
Logger.warn("Could not create image editor: \(error)")
|
|
}
|
|
}
|
|
}
|
|
|
|
// MARK:
|
|
|
|
var captionText: String? {
|
|
return attachment.captionText
|
|
}
|
|
|
|
var imageSize: CGSize = .zero
|
|
|
|
func getThumbnailImage() -> Promise<UIImage> {
|
|
return DispatchQueue.global().async(.promise) { () -> UIImage in
|
|
guard let image = self.attachment.staticThumbnail() else {
|
|
throw SignalAttachmentItemError.noThumbnail
|
|
}
|
|
return image
|
|
}.tap { result in
|
|
switch result {
|
|
case .fulfilled(let image):
|
|
self.imageSize = image.size
|
|
case .rejected(let error):
|
|
owsFailDebug("failed with error: \(error)")
|
|
}
|
|
}
|
|
}
|
|
|
|
// MARK: Hashable
|
|
|
|
public var hashValue: Int {
|
|
return attachment.hashValue
|
|
}
|
|
|
|
// MARK: Equatable
|
|
|
|
static func == (lhs: SignalAttachmentItem, rhs: SignalAttachmentItem) -> Bool {
|
|
return lhs.attachment == rhs.attachment
|
|
}
|
|
}
|
|
|
|
// MARK: -
|
|
|
|
class AttachmentItemCollection {
|
|
private (set) var attachmentItems: [SignalAttachmentItem]
|
|
let isAddMoreVisible: Bool
|
|
init(attachmentItems: [SignalAttachmentItem], isAddMoreVisible: Bool) {
|
|
self.attachmentItems = attachmentItems
|
|
self.isAddMoreVisible = isAddMoreVisible
|
|
}
|
|
|
|
func itemAfter(item: SignalAttachmentItem) -> SignalAttachmentItem? {
|
|
guard let currentIndex = attachmentItems.firstIndex(of: item) else {
|
|
owsFailDebug("currentIndex was unexpectedly nil")
|
|
return nil
|
|
}
|
|
|
|
let nextIndex = attachmentItems.index(after: currentIndex)
|
|
|
|
return attachmentItems[safe: nextIndex]
|
|
}
|
|
|
|
func itemBefore(item: SignalAttachmentItem) -> SignalAttachmentItem? {
|
|
guard let currentIndex = attachmentItems.firstIndex(of: item) else {
|
|
owsFailDebug("currentIndex was unexpectedly nil")
|
|
return nil
|
|
}
|
|
|
|
let prevIndex = attachmentItems.index(before: currentIndex)
|
|
|
|
return attachmentItems[safe: prevIndex]
|
|
}
|
|
|
|
func remove(item: SignalAttachmentItem) {
|
|
attachmentItems = attachmentItems.filter { $0 != item }
|
|
}
|
|
|
|
var count: Int {
|
|
return attachmentItems.count
|
|
}
|
|
}
|