93 lines
3.8 KiB
Swift
93 lines
3.8 KiB
Swift
//
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// Copyright (c) 2015 Max Sokolov https://twitter.com/max_sokolov
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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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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//
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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, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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import UIKit
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public class TablePrototypeRowBuilder<DataType: Hashable, CellType: ConfigurableCell where CellType.T == DataType, CellType: UITableViewCell> : TableBaseRowBuilder<DataType, CellType> {
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private var cachedHeights = [Int: CGFloat]()
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private var prototypeCell: CellType?
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public init(item: DataType) {
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super.init(item: item, id: CellType.reusableIdentifier())
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}
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public init(items: [DataType]? = nil) {
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super.init(items: items, id: CellType.reusableIdentifier())
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}
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public override func estimatedRowHeight(index: Int) -> CGFloat {
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return UITableViewAutomaticDimension
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}
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func heightCall(item: DataType, width: CGFloat) -> CGFloat {
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guard let cell = prototypeCell else { return 0 }
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cell.bounds = CGRectMake(0, 0, width, cell.bounds.height)
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cell.configure(item)
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cell.setNeedsLayout()
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cell.layoutIfNeeded()
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return cell.contentView.systemLayoutSizeFittingSize(UILayoutFittingCompressedSize).height + 1
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}
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// прехит по мере скроллинга в бэк
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// прехит не должен прехитить то что уже есть (показанное)
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// по мере скроллинга уметь отменять перхит ()
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public override func rowHeight(index: Int) -> CGFloat {
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guard let cell = prototypeCell else { return 0 }
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let itemz = item(index: index)
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if let height = cachedHeights[itemz.hashValue] {
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return height
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}
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let height = heightCall(itemz, width: tableDirector?.tableView?.bounds.size.width ?? 0)
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cachedHeights[itemz.hashValue] = height
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print(tableDirector?.tableView?.bounds.size.width, cell.bounds.height, height)
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return height
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}
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public override func invoke(action action: ActionType, cell: UITableViewCell?, indexPath: NSIndexPath, itemIndex: Int, userInfo: [NSObject: AnyObject]?) -> AnyObject? {
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if case .configure = action {
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(cell as? CellType)?.configure(item(index: itemIndex))
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}
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return super.invoke(action: action, cell: cell, indexPath: indexPath, itemIndex: itemIndex, userInfo: userInfo)
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}
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public override func willUpdateDirector(director: TableDirector?) {
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super.willUpdateDirector(director)
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if let tableView = director?.tableView, cell = tableView.dequeueReusableCellWithIdentifier(reusableIdentifier) as? CellType {
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prototypeCell = cell
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}
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}
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} |