Bulk Editing: Add bottom toolbar to the products list

WooCommerce/Classes/Extensions/UIButton+Helpers.swift

@@ -101,6 +101,7 @@ extension UIButton {
 
         setTitleColor(.accent, for: .normal)
         setTitleColor(.accentDark, for: .highlighted)
+        setTitleColor(.buttonDisabledTitle, for: .disabled)
     }
 
     /// Applies the Modal Cancel Button Style

WooCommerce/Classes/ViewRelated/Products/ProductsListViewModel.swift

@@ -10,6 +10,10 @@ class ProductListViewModel {
         selectedProducts.count
     }
 
+    var bulkEditActionIsEnabled: Bool {
+        !selectedProducts.isEmpty
+    }
+
     func productIsSelected(_ productToCheck: Product) -> Bool {
         return selectedProducts.contains(productToCheck)
     }

WooCommerce/Classes/ViewRelated/Products/ProductsViewController.swift

@@ -66,12 +66,44 @@ final class ProductsViewController: UIViewController, GhostableViewController {
     ///
     @IBOutlet private weak var toolbar: ToolbarView!
 
+    /// Top toolbar that shows the bulk edit CTA.
+    ///
+    @IBOutlet private weak var bottomToolbar: ToolbarView! {
+        didSet {
+            bottomToolbar.isHidden = true
+            bottomToolbar.backgroundColor = .systemColor(.secondarySystemGroupedBackground)
+            bottomToolbar.setSubviews(leftViews: [], rightViews: [bulkEditButton])
+            bottomToolbar.addDividerOnTop()
+        }
+    }
+
+    /// Bottom placeholder inside StackView to cover the safe area gap below the bottom toolbar.
+    ///
+    @IBOutlet private weak var bottomPlaceholder: UIView! {
+        didSet {
+            bottomPlaceholder.backgroundColor = .systemColor(.secondarySystemGroupedBackground)
+        }
+    }
+
     // Used to trick the navigation bar for large title (ref: issue 3 in p91TBi-45c-p2).
     private let hiddenScrollView = UIScrollView()
 
     /// The filter CTA in the top toolbar.
     private lazy var filterButton: UIButton = UIButton(frame: .zero)
 
+    /// The bulk edit CTA in the bottom toolbar.
+    private lazy var bulkEditButton: UIButton = {
+        let button = UIButton(frame: .zero)
+        button.setTitle(Localization.bulkEditingToolbarButtonTitle, for: .normal)
+        button.addTarget(self, action: #selector(openBulkEditingOptions(sender:)), for: .touchUpInside)
+        button.applyLinkButtonStyle()
+        var configuration = UIButton.Configuration.plain()
+        configuration.contentInsets = Constants.toolbarButtonInsets
+        button.configuration = configuration
+        button.isEnabled = false
+        return button
+    }()
+
     /// Container of the top banner that shows that the Products feature is still work in progress.
     ///
     private lazy var topBannerContainerView: SwappableSubviewContainerView = SwappableSubviewContainerView()
@@ -273,6 +305,7 @@ private extension ProductsViewController {
 
         configureNavigationBarForEditing()
         showOrHideToolbar()
+        showBottomToolbar()
     }
 
     @objc func finishBulkEditing() {
@@ -284,6 +317,35 @@ private extension ProductsViewController {
 
         configureNavigationBar()
         showOrHideToolbar()
+        hideBottomToolbar()
+    }
+
+    func updatedSelectedItems() {
+        updateNavigationBarTitleForEditing()
+        bulkEditButton.isEnabled = viewModel.bulkEditActionIsEnabled
+    }
+
+    @objc func openBulkEditingOptions(sender: UIButton) {
+        let actionSheet = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
+
+        let updateStatus = UIAlertAction(title: Localization.bulkEditingStatusOption, style: .default) { _ in
+            // TODO-8519: show UI for status update
+        }
+        let updatePrice = UIAlertAction(title: Localization.bulkEditingPriceOption, style: .default) { _ in
+            // TODO-8520: show UI for price update
+        }
+        let cancelAction = UIAlertAction(title: Localization.cancel, style: .cancel)
+
+        actionSheet.addAction(updateStatus)
+        actionSheet.addAction(updatePrice)
+        actionSheet.addAction(cancelAction)
+
+        if let popoverController = actionSheet.popoverPresentationController {
+            popoverController.sourceView = sender
+            popoverController.sourceRect = sender.bounds
+        }
+
+        present(actionSheet, animated: true)
     }
 }
 
@@ -361,11 +423,11 @@ private extension ProductsViewController {
     }
 
     func configureNavigationBarForEditing() {
-        configureNavigationBarTitleForEditing()
+        updateNavigationBarTitleForEditing()
         configureNavigationBarRightButtonItemsForEditing()
     }
 
-    func configureNavigationBarTitleForEditing() {
+    func updateNavigationBarTitleForEditing() {
         let selectedProducts = viewModel.selectedProductsCount
         if selectedProducts == 0 {
             navigationItem.title = Localization.bulkEditingTitle
@@ -459,7 +521,9 @@ private extension ProductsViewController {
 
         [sortButton, filterButton].forEach {
             $0.applyLinkButtonStyle()
-            $0.contentEdgeInsets = Constants.toolbarButtonInsets
+            var configuration = UIButton.Configuration.plain()
+            configuration.contentInsets = Constants.toolbarButtonInsets
+            $0.configuration = configuration
         }
 
         toolbar.backgroundColor = .systemColor(.secondarySystemGroupedBackground)
@@ -491,6 +555,24 @@ private extension ProductsViewController {
 
         toolbar.isHidden = filters.numberOfActiveFilters == 0 ? isEmpty : false
     }
+
+    func showBottomToolbar() {
+        tabBarController?.tabBar.isHidden = true
+
+        // trigger safe area update
+        if let tabBarController {
+            let currentFrame = tabBarController.view.frame
+            tabBarController.view.frame = currentFrame.insetBy(dx: 0, dy: 1)
+            tabBarController.view.frame = currentFrame
+        }
+
+        bottomToolbar.isHidden = false
+    }
+
+    func hideBottomToolbar() {
+        tabBarController?.tabBar.isHidden = false
+        bottomToolbar.isHidden = true
+    }
 }
 
 // MARK: - Updates
@@ -673,7 +755,7 @@ extension ProductsViewController: UITableViewDelegate {
 
         if tableView.isEditing {
             viewModel.selectProduct(product)
-            configureNavigationBarTitleForEditing()
+            updatedSelectedItems()
         } else {
             tableView.deselectRow(at: indexPath, animated: true)
 
@@ -690,7 +772,7 @@ extension ProductsViewController: UITableViewDelegate {
 
         let product = resultsController.object(at: indexPath)
         viewModel.deselectProduct(product)
-        configureNavigationBarTitleForEditing()
+        updatedSelectedItems()
     }
 
     func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
@@ -1109,7 +1191,7 @@ private extension ProductsViewController {
         static let placeholderRowsPerSection = [3]
         static let headerDefaultHeight = CGFloat(130)
         static let headerContainerInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
-        static let toolbarButtonInsets = UIEdgeInsets(top: 12, left: 16, bottom: 12, right: 16)
+        static let toolbarButtonInsets = NSDirectionalEdgeInsets(top: 12, leading: 16, bottom: 12, trailing: 16)
     }
 
     enum Localization {
@@ -1120,6 +1202,14 @@ private extension ProductsViewController {
             comment: "VoiceOver accessibility hint, informing the user the button can be used to bulk edit products"
         )
 
+        static let bulkEditingToolbarButtonTitle = NSLocalizedString(
+            "Bulk update",
+            comment: "Title of a button that presents a menu with possible products bulk update options"
+        )
+        static let bulkEditingStatusOption = NSLocalizedString("Update status", comment: "Title of an option that opens bulk products status update flow")
+        static let bulkEditingPriceOption = NSLocalizedString("Update price", comment: "Title of an option that opens bulk products price update flow")
+        static let cancel = NSLocalizedString("Cancel", comment: "Title of an option to dismiss the bulk edit action sheet")
+
         static let bulkEditingTitle = NSLocalizedString(
             "Select items",
             comment: "Title that appears on top of the Product List screen when bulk editing starts."

WooCommerce/Classes/ViewRelated/Products/ProductsViewController.xib

@@ -1,16 +1,18 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="20037" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="21507" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
     <device id="retina6_1" orientation="portrait" appearance="light"/>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="20020"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="21505"/>
         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
         <capability name="System colors in document resources" minToolsVersion="11.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <objects>
         <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="ProductsViewController" customModule="WooCommerce" customModuleProvider="target">
             <connections>
+                <outlet property="bottomPlaceholder" destination="xLN-As-fgq" id="bwi-vq-EvS"/>
+                <outlet property="bottomToolbar" destination="pNN-uJ-nMs" id="Z6G-Im-KE6"/>
                 <outlet property="tableView" destination="1mE-SE-uK9" id="ogX-nu-l5x"/>
                 <outlet property="toolbar" destination="9eA-hc-k15" id="V2c-iT-WpM"/>
                 <outlet property="view" destination="iN0-l3-epB" id="Jh9-wF-LZg"/>
@@ -22,21 +24,32 @@
             <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
             <subviews>
                 <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" translatesAutoresizingMaskIntoConstraints="NO" id="tDW-j0-dUT">
-                    <rect key="frame" x="0.0" y="44" width="414" height="818"/>
+                    <rect key="frame" x="0.0" y="48" width="414" height="848"/>
                     <subviews>
                         <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="9eA-hc-k15" userLabel="Filter Bar" customClass="ToolbarView" customModule="WooCommerce" customModuleProvider="target">
                             <rect key="frame" x="0.0" y="0.0" width="414" height="50"/>
                             <color key="backgroundColor" systemColor="systemBackgroundColor"/>
                             <constraints>
-                                <constraint firstAttribute="height" constant="50" id="sEi-OR-bvb"/>
+                                <constraint firstAttribute="height" priority="995" constant="50" id="sEi-OR-bvb"/>
                             </constraints>
                         </view>
                         <tableView clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" style="plain" separatorStyle="default" rowHeight="-1" estimatedRowHeight="-1" sectionHeaderHeight="28" sectionFooterHeight="28" translatesAutoresizingMaskIntoConstraints="NO" id="1mE-SE-uK9">
-                            <rect key="frame" x="0.0" y="50" width="414" height="768"/>
+                            <rect key="frame" x="0.0" y="50" width="414" height="714"/>
                             <userDefinedRuntimeAttributes>
                                 <userDefinedRuntimeAttribute type="string" keyPath="accessibilityIdentifier" value="orders-table-view"/>
                             </userDefinedRuntimeAttributes>
                         </tableView>
+                        <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="pNN-uJ-nMs" userLabel="Bulk Edit Bar" customClass="ToolbarView" customModule="WooCommerce" customModuleProvider="target">
+                            <rect key="frame" x="0.0" y="764" width="414" height="50"/>
+                            <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                            <constraints>
+                                <constraint firstAttribute="height" priority="995" constant="50" id="mXV-oU-3bM"/>
+                            </constraints>
+                        </view>
+                        <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="xLN-As-fgq" userLabel="Safe Area Placeholder">
+                            <rect key="frame" x="0.0" y="814" width="414" height="34"/>
+                            <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                        </view>
                     </subviews>
                     <constraints>
                         <constraint firstItem="9eA-hc-k15" firstAttribute="leading" secondItem="tDW-j0-dUT" secondAttribute="leading" id="2Md-DN-FrJ"/>
@@ -45,7 +58,7 @@
                         <constraint firstItem="1mE-SE-uK9" firstAttribute="trailing" secondItem="9eA-hc-k15" secondAttribute="trailing" id="g0z-q4-rFD"/>
                         <constraint firstItem="1mE-SE-uK9" firstAttribute="leading" secondItem="9eA-hc-k15" secondAttribute="leading" id="i2H-MX-SoN"/>
                         <constraint firstItem="9eA-hc-k15" firstAttribute="top" secondItem="tDW-j0-dUT" secondAttribute="top" id="ilw-mJ-v1G"/>
-                        <constraint firstAttribute="bottom" secondItem="1mE-SE-uK9" secondAttribute="bottom" id="jCv-iK-SJb"/>
+                        <constraint firstItem="pNN-uJ-nMs" firstAttribute="top" secondItem="1mE-SE-uK9" secondAttribute="bottom" id="mlT-bM-H2X"/>
                     </constraints>
                 </stackView>
             </subviews>
@@ -54,8 +67,10 @@
             <constraints>
                 <constraint firstItem="vUN-kp-3ea" firstAttribute="trailing" secondItem="tDW-j0-dUT" secondAttribute="trailing" id="3MC-6D-nnm"/>
                 <constraint firstItem="tDW-j0-dUT" firstAttribute="top" secondItem="vUN-kp-3ea" secondAttribute="top" id="9UK-Qy-FXd"/>
-                <constraint firstItem="vUN-kp-3ea" firstAttribute="bottom" secondItem="tDW-j0-dUT" secondAttribute="bottom" id="AQF-qF-3wt"/>
+                <constraint firstAttribute="bottom" secondItem="tDW-j0-dUT" secondAttribute="bottom" id="AQF-qF-3wt"/>
+                <constraint firstItem="xLN-As-fgq" firstAttribute="top" secondItem="vUN-kp-3ea" secondAttribute="bottom" id="Iu8-XK-w4W"/>
                 <constraint firstItem="tDW-j0-dUT" firstAttribute="leading" secondItem="vUN-kp-3ea" secondAttribute="leading" id="KSv-iL-NFv"/>
+                <constraint firstItem="vUN-kp-3ea" firstAttribute="bottom" secondItem="pNN-uJ-nMs" secondAttribute="bottom" id="xJE-yf-lID"/>
             </constraints>
             <point key="canvasLocation" x="100.00000000000001" y="48.883928571428569"/>
         </view>

WooCommerce/Classes/ViewRelated/Toolbar/ToolbarView.swift

@@ -26,6 +26,20 @@ final class ToolbarView: UIView {
         pinSubviewToAllEdges(stackView)
     }
 
+    func addDividerOnTop() {
+        let divider = UIView()
+        divider.backgroundColor = .divider
+        divider.translatesAutoresizingMaskIntoConstraints = false
+        addSubview(divider)
+
+        NSLayoutConstraint.activate([
+            divider.heightAnchor.constraint(equalToConstant: 1/UIScreen.main.scale),
+            divider.topAnchor.constraint(equalTo: topAnchor),
+            divider.leadingAnchor.constraint(equalTo: leadingAnchor),
+            divider.trailingAnchor.constraint(equalTo: trailingAnchor)
+        ])
+    }
+
     func setSubviews(leftViews: [UIView], rightViews: [UIView]) {
         stackView.removeAllArrangedSubviews()