App id matching (#432)

* Add app id matching for buttons

* Hide MT button from  control strip when touch bar is empty

Co-authored-by: Wiktor Latanowicz <wiktor@latanowicz.com>
Co-authored-by: Anton Palgunov <Toxblh@users.noreply.github.com>

MTMR/ItemsParsing.swift

@@ -658,6 +658,7 @@ enum GeneralParameter {
     case bordered(_: Bool)
     case background(_: NSColor)
     case title(_: String)
+    case matchAppId(_: String)
 }
 
 struct GeneralParameters: Decodable {
@@ -670,6 +671,7 @@ struct GeneralParameters: Decodable {
         case bordered
         case background
         case title
+        case matchAppId
     }
 
     init(from decoder: Decoder) throws {
@@ -699,6 +701,10 @@ struct GeneralParameters: Decodable {
             result[.title] = .title(title)
         }
 
+        if let matchAppId = try container.decodeIfPresent(String.self, forKey: .matchAppId) {
+            result[.matchAppId] = .matchAppId(matchAppId)
+        }
+
         parameters = result
     }
 }

MTMR/SwipeItem.swift

@@ -67,4 +67,12 @@ class SwipeItem: NSCustomTouchBarItem {
             }
         }
     }
+    
+    func isEqual(_ object: AnyObject?) -> Bool {
+        if let object = object as? SwipeItem {
+            return self.scriptApple?.source as String? == object.scriptApple?.source as String? && self.scriptBash == object.scriptBash && self.direction == object.direction && self.fingers == object.fingers && self.minOffset == object.minOffset
+        } else {
+            return false
+        }
+    }
 }

MTMR/TouchBarController.swift

@@ -134,17 +134,56 @@ class TouchBarController: NSObject, NSTouchBarDelegate {
         touchBar = NSTouchBar()
         jsonItems = newJsonItems
         itemDefinitions = [:]
-        items = [:]
 
         loadItemDefinitions(jsonItems: jsonItems)
+        
+        updateActiveApp()
+    }
+    
+    func didItemsChange(prevItems: [NSTouchBarItem.Identifier: NSTouchBarItem], prevSwipeItems: [SwipeItem]) -> Bool {
+        var changed = items.count != prevItems.count || swipeItems.count != prevSwipeItems.count
+        
+        if !changed {
+            for (item, prevItem) in zip(items, prevItems) {
+                if item.key != prevItem.key {
+                    changed = true
+                    break
+                }
+            }
+        }
+
+        if !changed {
+            for (swipeItem, prevSwipeItem) in zip(swipeItems, prevSwipeItems) {
+                if !swipeItem.isEqual(prevSwipeItem) {
+                    changed = true
+                    break
+                }
+            }
+        }
+
+        return changed
+    }
+    
+    func prepareTouchBar() {
+        let prevItems = items
+        let prevSwipeItems = swipeItems
+
         createItems()
 
+        let changed = didItemsChange(prevItems: prevItems, prevSwipeItems: prevSwipeItems)
+
+        if !changed {
+            return
+        }
+        
         let centerItems = centerIdentifiers.compactMap({ (identifier) -> NSTouchBarItem? in
             items[identifier]
         })
 
         let centerScrollArea = NSTouchBarItem.Identifier("com.toxblh.mtmr.scrollArea.".appending(UUID().uuidString))
         let scrollArea = ScrollViewItem(identifier: centerScrollArea, items: centerItems)
+        
+        basicViewIdentifier = NSTouchBarItem.Identifier("com.toxblh.mtmr.scrollView.".appending(UUID().uuidString))
 
         touchBar.delegate = self
         touchBar.defaultItemIdentifiers = [basicViewIdentifier]
@@ -158,8 +197,6 @@ class TouchBarController: NSObject, NSTouchBarDelegate {
 
         basicView = BasicView(identifier: basicViewIdentifier, items:leftItems + [scrollArea] + rightItems, swipeItems: swipeItems)
         basicView?.legacyGesturesEnabled = AppSettings.multitouchGestures
-
-        updateActiveApp()
     }
 
     @objc func activeApplicationChanged(_: Notification) {
@@ -170,9 +207,18 @@ class TouchBarController: NSObject, NSTouchBarDelegate {
         if frontmostApplicationIdentifier != nil && blacklistAppIdentifiers.firstIndex(of: frontmostApplicationIdentifier!) != nil {
             dismissTouchBar()
         } else {
-            presentTouchBar()
+            prepareTouchBar()
+            if touchBarContainsAnyItems() {
+                presentTouchBar()
+            } else {
+                dismissTouchBar()
+            }
         }
     }
+    
+    func touchBarContainsAnyItems() -> Bool {
+        return items.count != 0 || swipeItems.count != 0
+    }
 
     func reloadStandardConfig() {
         let presetPath = standardConfigPath
@@ -212,12 +258,29 @@ class TouchBarController: NSObject, NSTouchBarDelegate {
     }
 
     func createItems() {
+        items = [:]
+        swipeItems = []
+
         for (identifier, definition) in itemDefinitions {
-            let item = createItem(forIdentifier: identifier, definition: definition)
-            if item is SwipeItem {
-                swipeItems.append(item as! SwipeItem)
-            } else {
-                items[identifier] = item
+            var show = true
+            
+            if let frontApp = frontmostApplicationIdentifier {
+                if case let .matchAppId(regexString)? = definition.additionalParameters[.matchAppId] {
+                    let regex = try! NSRegularExpression(pattern: regexString)
+                    let range = NSRange(location: 0, length: frontApp.count)
+                    if regex.firstMatch(in: frontApp, range: range) == nil {
+                        show = false
+                    }
+                }
+            }
+            
+            if show {
+                let item = createItem(forIdentifier: identifier, definition: definition)
+                if item is SwipeItem {
+                    swipeItems.append(item as! SwipeItem)
+                } else {
+                    items[identifier] = item
+                }
             }
         }
     }
@@ -231,26 +294,29 @@ class TouchBarController: NSObject, NSTouchBarDelegate {
     }
 
     func updateControlStripPresence() {
-        DFRElementSetControlStripPresenceForIdentifier(.controlStripItem, true)
+        let showMtmrButtonOnControlStrip = touchBarContainsAnyItems()
+        DFRElementSetControlStripPresenceForIdentifier(.controlStripItem, showMtmrButtonOnControlStrip)
     }
 
     @objc private func presentTouchBar() {
         if AppSettings.showControlStripState {
-            updateControlStripPresence()
             presentSystemModal(touchBar, systemTrayItemIdentifier: .controlStripItem)
         } else {
             presentSystemModal(touchBar, placement: 1, systemTrayItemIdentifier: .controlStripItem)
         }
+        updateControlStripPresence()
     }
 
     @objc private func dismissTouchBar() {
-        minimizeSystemModal(touchBar)
+        if touchBarContainsAnyItems() {
+            minimizeSystemModal(touchBar)
+        }
         updateControlStripPresence()
     }
 
     @objc func resetControlStrip() {
         dismissTouchBar()
-        presentTouchBar()
+        updateActiveApp()
     }
 
     func touchBar(_: NSTouchBar, makeItemForIdentifier identifier: NSTouchBarItem.Identifier) -> NSTouchBarItem? {

README.md

@@ -488,6 +488,13 @@ by using background with color "#000000" and bordered == false you can create bu
   }
 ```
 
+- `matchAppId` displays the button only when active app's id matches given regexp
+
+```json
+  "matchAppId": "Safari"
+```
+
+
 ## Troubleshooting
 
 #### If you can't open preferences: