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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,17 @@ | ||
| // | ||
| // | ||
| // Copyright (C) 2024 Devexperts LLC. All rights reserved. | ||
| // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. | ||
| // If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
| // | ||
|
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| import Foundation | ||
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| public class ObservableListModel { | ||
| let native: NativeObservableListModel | ||
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| init(native: NativeObservableListModel) { | ||
| self.native = native | ||
| } | ||
|
|
||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| // | ||
| // | ||
| // Copyright (C) 2024 Devexperts LLC. All rights reserved. | ||
| // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. | ||
| // If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
| // | ||
|
|
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| import Foundation | ||
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| public class OrderBookModel { | ||
| let native: NativeOrderBookModel | ||
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| private let listeners = ConcurrentWeakHashTable<AnyObject>() | ||
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| /// Creates new model. This model is not attached to any feed, not subscribed to any symbol, | ||
| /// and has filter set by default to {@link OrderBookModelFilter#ALL}. | ||
| public init() throws { | ||
| native = try NativeOrderBookModel() | ||
| } | ||
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| /// Attaches model to the specified feed. | ||
| /// - Parameters: | ||
| /// - feed: The feed to attach to. | ||
| public func attach(feed: DXFeed) throws { | ||
| try native.attach(feed: feed.nativeFeed) | ||
| } | ||
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| /// Detaches model from the specified feed. | ||
| /// - Parameters: | ||
| /// - feed: The feed to detach from. | ||
| public func detach(feed: DXFeed) throws { | ||
| try native.detach(feed: feed.nativeFeed) | ||
| } | ||
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| /// Closes this model and makes it permanently detached. | ||
| public func close() throws { | ||
| try native.close() | ||
| } | ||
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| /// Clears subscription symbol and, subsequently, all events in this model. | ||
| public func clear() throws { | ||
| try native.clear() | ||
| } | ||
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| /// Returns filter for the model. This filter specifies which order events are shown in the book. | ||
| /// - Returns: ``OrderBookModelFilter`` | ||
| public func getFilter() throws -> OrderBookModelFilter { | ||
| try native.getFilter() | ||
| } | ||
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| /// Sets the specified filter to the model. | ||
| /// - Parameters: | ||
| /// - filter: The model filter. | ||
| public func setFilter(_ filter: OrderBookModelFilter) throws { | ||
| try native.setFilter(filter) | ||
| } | ||
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| /// Returns order book symbol, or {@code null} for empty subscription. | ||
| /// - Returns: order book symbol | ||
| public func getSymbol() throws -> String? { | ||
| try native.getSymbol() | ||
| } | ||
|
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| /// Sets symbol for the order book to subscribe for. | ||
| /// - Parameters: | ||
| /// - symbol: order book symbol. Use null for to unsubscribe. | ||
| public func setSymbol(_ symbol: String?) throws { | ||
| try native.setSymbol(symbol) | ||
| } | ||
|
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| /// Returns lot size. Lot size is a multiplier applied to ``Scope/composite`` | ||
| /// - Returns: lot size. | ||
| public func getLotSize() throws -> Int32 { | ||
| try native.getLotSize() | ||
| } | ||
|
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| /// Sets the lot size. | ||
| /// - Parameters: | ||
| /// - size: lot size multiplier. | ||
| public func setLotSize(_ size: Int32) throws { | ||
| try native.setLotSize(size) | ||
| } | ||
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| /// Returns the view of bid side (buy orders) of the order book. | ||
| /// - Returns: ``ObservableListModel``. | ||
| public func getBuyOrders() throws -> ObservableListModel { | ||
| ObservableListModel(native: try native.getBuyOrders()) | ||
| } | ||
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| /// Returns the view of offer side (sell orders) of the order book. | ||
| /// - Returns: ``ObservableListModel``. | ||
| public func getSellOrders() throws -> ObservableListModel { | ||
| ObservableListModel(native: try native.getSellOrders()) | ||
| } | ||
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| /// Adds a listener to this order book model. | ||
| /// - Parameters: | ||
| /// - listener: ``OrderBookModelListener``. | ||
| public func add<O>(listener: O) throws | ||
| where O: OrderBookModelListener, | ||
| O: Hashable { | ||
| try listeners.reader { [weak self] in | ||
| if $0.count == 0 { | ||
| try self?.native.addListener(self) | ||
| } | ||
| } | ||
| listeners.insert(listener) | ||
| } | ||
|
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| /// Removes a listener from this order book model. | ||
| /// - Parameters: | ||
| /// - listener: ``OrderBookModelListener``. | ||
| public func remove<O>(listener: O) | ||
| where O: OrderBookModelListener, | ||
| O: Hashable { | ||
| listeners.remove(listener) | ||
| } | ||
| } | ||
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| extension OrderBookModel: OrderBookModelListener { | ||
| public func modelChanged() { | ||
| listeners.reader { items in | ||
| let enumerator = items.objectEnumerator() | ||
| while let listener = enumerator.nextObject() as? OrderBookModelListener { | ||
| listener.modelChanged() | ||
| } | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| // | ||
| // | ||
| // Copyright (C) 2024 Devexperts LLC. All rights reserved. | ||
| // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. | ||
| // If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
| // | ||
|
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| import Foundation | ||
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| public enum OrderBookModelFilter: CaseIterable { | ||
| case composite | ||
| case regional | ||
| case aggregate | ||
| case order | ||
| case compositeRegional | ||
| case compositeRegionalAgregate | ||
| case all | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| // | ||
| // | ||
| // Copyright (C) 2024 Devexperts LLC. All rights reserved. | ||
| // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. | ||
| // If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
| // | ||
|
|
||
| import Foundation | ||
|
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| /// Callback interface that receives notifications about changes in ``OrderBookModel`` | ||
| public protocol OrderBookModelListener: AnyObject { | ||
| func modelChanged() | ||
| } |
17 changes: 17 additions & 0 deletions
17
DXFeedFramework/Native/Model/NativeObservableListModel.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| // | ||
| // | ||
| // Copyright (C) 2024 Devexperts LLC. All rights reserved. | ||
| // This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. | ||
| // If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
| // | ||
|
|
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| import Foundation | ||
| @_implementationOnly import graal_api | ||
|
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| class NativeObservableListModel { | ||
| let native: UnsafeMutablePointer<dxfg_observable_list_model_t>? | ||
|
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| init(native: UnsafeMutablePointer<dxfg_observable_list_model_t>?) { | ||
| self.native = native | ||
| } | ||
| } |
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