mirror of
https://github.com/MessageKit/MessageKit.git
synced 2026-02-06 19:03:19 +00:00
Steven Deutsch
81 lines
4.3 KiB
Swift
81 lines
4.3 KiB
Swift
/*
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MIT License
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Copyright (c) 2017 MessageKit
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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import Foundation
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public protocol MessagesLayoutDelegate: class {
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func messageLabelInset(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> UIEdgeInsets
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func avatarAlignment(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> AvatarAlignment
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func cellTopLabelAlignment(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> LabelAlignment
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func cellBottomLabelAlignment(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> LabelAlignment
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func avatarSize(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGSize
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func headerViewSize(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGSize
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func footerViewSize(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGSize
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}
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public extension MessagesLayoutDelegate {
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func messageLabelInset(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> UIEdgeInsets {
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guard let dataSource = messagesCollectionView.messagesDataSource else { return .zero }
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return dataSource.isFromCurrentSender(message: message) ? UIEdgeInsets(top: 7, left: 14, bottom: 7, right: 18) : UIEdgeInsets(top: 7, left: 18, bottom: 7, right: 14)
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}
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func avatarAlignment(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> AvatarAlignment {
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return .cellBottom
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}
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func cellTopLabelAlignment(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> LabelAlignment {
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guard let dataSource = messagesCollectionView.messagesDataSource else { return .cellCenter(.zero) }
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return dataSource.isFromCurrentSender(message: message) ? .messageTrailing(.zero) : .messageLeading(.zero)
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}
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func cellBottomLabelAlignment(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> LabelAlignment {
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guard let dataSource = messagesCollectionView.messagesDataSource else { return .cellCenter(.zero) }
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return dataSource.isFromCurrentSender(message: message) ? .messageLeading(.zero) : .messageTrailing(.zero)
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}
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func avatarSize(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGSize {
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return CGSize(width: 30, height: 30)
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}
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func headerViewSize(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGSize {
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guard let displayDelegate = messagesCollectionView.messagesDisplayDelegate else { return .zero }
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let shouldDisplay = displayDelegate.shouldDisplayHeader(for: message, at: indexPath, in: messagesCollectionView)
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return shouldDisplay ? CGSize(width: messagesCollectionView.bounds.width, height: 12) : .zero
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}
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func footerViewSize(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGSize {
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return .zero
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}
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}
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