fix(bottomsheet): ios fix for peekHeight + doc

Author: farfromrefug

packages/bottomsheet/README.md

@@ -69,7 +69,7 @@ export interface BottomSheetOptions {
     skipCollapsedState?: boolean; 
     // optional Android parameter to skip midway state when view is greater than 50%. Default is false
     peekHeight?: number; 
-    // optional parameter to set the collapsed sheet height. To work on iOS you need to set trackingScrollView.
+    // optional parameter to set the collapsed sheet height. To work on iOS you need to set trackingScrollView. Also ensure the scrollView is taking the full height of the bottomsheet content. Otherwise the "full" height wont be computed correctly
     ignoreKeyboardHeight?: boolean; 
     //(iOS only) A Boolean value that controls whether the height of the keyboard should affect the bottom sheet's frame when the keyboard shows on the screen. (Default: true)
     onChangeState?: onChangeStateBottomSheet; 

src/bottomsheet/bottomsheet.ios.ts

@@ -393,16 +393,18 @@ export class ViewWithBottomSheet extends ViewWithBottomSheetBase {
         bottomSheet.dismissOnBackgroundTap = options.dismissOnBackgroundTap !== false;
         bottomSheet.dismissOnDraggingDownSheet = options.dismissOnDraggingDownSheet !== false;
 
+        const presentationController = bottomSheet.presentationController as MDCBottomSheetPresentationController;
         const peekHeight = options.peekHeight;
         if (peekHeight) {
-            (bottomSheet.presentationController as MDCBottomSheetPresentationController).preferredSheetHeight = peekHeight;
+            presentationController.preferredSheetHeight = peekHeight;
         }
-        (bottomSheet.presentationController as MDCBottomSheetPresentationController).ignoreKeyboardHeight = options.ignoreKeyboardHeight !== false;
+        presentationController.ignoreKeyboardHeight = options.ignoreKeyboardHeight !== false;
+        const skipCollapsedState = options?.skipCollapsedState === true;
 
         if (options.trackingScrollView) {
             const scrollView = this.getViewById(options.trackingScrollView);
             if (scrollView && scrollView.nativeViewProtected instanceof UIScrollView) {
-                bottomSheet.trackingScrollView = scrollView.nativeViewProtected;
+                presentationController.trackingScrollView = scrollView.nativeViewProtected;
             }
         }
         controller.nsAnimated = true;

src/typings/MaterialComponents.ios.d.ts

@@ -1217,6 +1217,8 @@ declare class MDCButton extends UIButton implements MDCElevatable, MDCElevationO
 
 	static appearanceWhenContainedInInstancesOfClasses(containerTypes: NSArray<typeof NSObject> | typeof NSObject[]): MDCButton; // inherited from UIAppearance
 
+	static buttonWithConfigurationPrimaryAction(configuration: UIButtonConfiguration, primaryAction: UIAction): MDCButton; // inherited from UIButton
+
 	static buttonWithType(buttonType: UIButtonType): MDCButton; // inherited from UIButton
 
 	static buttonWithTypePrimaryAction(buttonType: UIButtonType, primaryAction: UIAction): MDCButton; // inherited from UIButton
@@ -2033,6 +2035,8 @@ declare class MDCFlatButton extends MDCButton {
 
 	static appearanceWhenContainedInInstancesOfClasses(containerTypes: NSArray<typeof NSObject> | typeof NSObject[]): MDCFlatButton; // inherited from UIAppearance
 
+	static buttonWithConfigurationPrimaryAction(configuration: UIButtonConfiguration, primaryAction: UIAction): MDCFlatButton; // inherited from UIButton
+
 	static buttonWithType(buttonType: UIButtonType): MDCFlatButton; // inherited from UIButton
 
 	static buttonWithTypePrimaryAction(buttonType: UIButtonType, primaryAction: UIAction): MDCFlatButton; // inherited from UIButton
@@ -2062,6 +2066,8 @@ declare class MDCFloatingButton extends MDCButton {
 
 	static appearanceWhenContainedInInstancesOfClasses(containerTypes: NSArray<typeof NSObject> | typeof NSObject[]): MDCFloatingButton; // inherited from UIAppearance
 
+	static buttonWithConfigurationPrimaryAction(configuration: UIButtonConfiguration, primaryAction: UIAction): MDCFloatingButton; // inherited from UIButton
+
 	static buttonWithType(buttonType: UIButtonType): MDCFloatingButton; // inherited from UIButton
 
 	static buttonWithTypePrimaryAction(buttonType: UIButtonType, primaryAction: UIAction): MDCFloatingButton; // inherited from UIButton
@@ -3038,6 +3044,8 @@ declare class MDCRaisedButton extends MDCButton {
 
 	static appearanceWhenContainedInInstancesOfClasses(containerTypes: NSArray<typeof NSObject> | typeof NSObject[]): MDCRaisedButton; // inherited from UIAppearance
 
+	static buttonWithConfigurationPrimaryAction(configuration: UIButtonConfiguration, primaryAction: UIAction): MDCRaisedButton; // inherited from UIButton
+
 	static buttonWithType(buttonType: UIButtonType): MDCRaisedButton; // inherited from UIButton
 
 	static buttonWithTypePrimaryAction(buttonType: UIButtonType, primaryAction: UIAction): MDCRaisedButton; // inherited from UIButton