Add code that auto populates the Add Custom Token screen when the search string is a valid address

AlphaWallet/Tokens/Coordinators/AddHideTokensCoordinator.swift

@@ -93,13 +93,20 @@ extension AddHideTokensCoordinator: AddHideTokensViewControllerDelegate {
         coordinator.mark(token: token, isHidden: isHidden)
     }
 
-    func didPressAddToken(in viewController: UIViewController) {
+    func didPressAddToken(in viewController: UIViewController, with addressString: String) {
+        let initialState: NewTokenInitialState
+        if let walletAddress = AlphaWallet.Address(string: addressString.trimmingCharacters(in: .whitespacesAndNewlines)) {
+            initialState = .address(walletAddress)
+        } else {
+            initialState = .empty
+        }
         let coordinator = NewTokenCoordinator(
             analyticsCoordinator: analyticsCoordinator,
             navigationController: navigationController,
             tokenCollection: tokenCollection,
             config: config,
             singleChainTokenCoordinators: singleChainTokenCoordinators,
+            initialState: initialState,
             sessions: sessions
         )
         coordinator.delegate = self

AlphaWallet/Tokens/ViewControllers/AddHideTokensViewController.swift

@@ -5,7 +5,7 @@ import StatefulViewController
 import PromiseKit
 
 protocol AddHideTokensViewControllerDelegate: AnyObject {
-    func didPressAddToken(in viewController: UIViewController)
+    func didPressAddToken(in viewController: UIViewController, with addressString: String)
     func didMark(token: TokenObject, in viewController: UIViewController, isHidden: Bool)
     func didChangeOrder(tokens: [TokenObject], in viewController: UIViewController)
     func didClose(viewController: AddHideTokensViewController)
@@ -53,8 +53,8 @@ class AddHideTokensViewController: UIViewController {
 
         emptyView = EmptyView.filterTokensEmptyView(completion: { [weak self] in
             guard let strongSelf = self, let delegate = strongSelf.delegate else { return }
-
-            delegate.didPressAddToken(in: strongSelf)
+            let addressString = strongSelf.searchController.searchBar.text ?? ""
+            delegate.didPressAddToken(in: strongSelf, with: addressString)
         }) 
 
         view.addSubview(tableView)
@@ -106,7 +106,7 @@ class AddHideTokensViewController: UIViewController {
     }
 
     @objc private func addToken() {
-        delegate?.didPressAddToken(in: self)
+        delegate?.didPressAddToken(in: self, with: "")
     }
 
     private func configure(viewModel: AddHideTokensViewModel) {