Cherry-pick 69d07a6. rdar://problem/111793617

    When selecting Live Text in Safari on iOS, the selection handles move away from the selection when zooming
    https://bugs.webkit.org/show_bug.cgi?id=259964
    rdar://111793617

    Reviewed by Wenson Hsieh.

    UIKit now scales the selection handles when zooming and updates their position accordingly.
    Since WebKit is also scaling them ourselves, this results in a position that's offset from the
    selection proportional to the zoom amount.

    Fix by no longer scaling the selection handles in WebKit.

    * LayoutTests/resources/ui-helper.js:
    (window.UIHelper.getSelectionEndGrabberViewShapePathDescription.return.new.Promise.):
    (window.UIHelper.getSelectionEndGrabberViewShapePathDescription.return.new.Promise):
    (window.UIHelper.getSelectionEndGrabberViewShapePathDescription):
    * Source/WebKit/UIProcess/ios/WKTextSelectionRect.mm:
    (-[WKTextSelectionRect _customHandleInfo]):
    * Tools/TestRunnerShared/UIScriptContext/Bindings/UIScriptController.idl:
    * Tools/TestRunnerShared/UIScriptContext/UIScriptController.h:
    (WTR::UIScriptController::selectionEndGrabberViewShapePathDescription const):
    * Tools/WebKitTestRunner/ios/UIScriptControllerIOS.h:
    * Tools/WebKitTestRunner/ios/UIScriptControllerIOS.mm:
    (WTR::UIScriptControllerIOS::selectionEndGrabberViewShapePathDescription const):

    Canonical link: https://commits.webkit.org/266753@main

Canonical link: https://commits.webkit.org/265870.322@safari-7616.1.27.10-branch

LayoutTests/resources/ui-helper.js

@@ -960,6 +960,22 @@ window.UIHelper = class UIHelper {
         });
     }
 
+    static getSelectionEndGrabberViewShapePathDescription()
+    {
+        if (!this.isWebKit2() || !this.isIOSFamily())
+            return Promise.resolve();
+
+        return new Promise(resolve => {
+            testRunner.runUIScript(`(function() {
+                uiController.doAfterNextStablePresentationUpdate(function() {
+                    uiController.uiScriptComplete(JSON.stringify(uiController.selectionEndGrabberViewShapePathDescription));
+                });
+            })()`, jsonString => {
+                resolve(JSON.parse(jsonString));
+            });
+        });
+    }
+
     static midPointOfRect(rect) {
         return { x: rect.left + (rect.width / 2), y: rect.top + (rect.height / 2) };
     }

Source/WebKit/UIProcess/ios/WKTextSelectionRect.mm

@@ -126,7 +126,9 @@ - (WKTextSelectionRectCustomHandleInfo *)_customHandleInfo
         return nil;
 
     auto scaledQuad = _selectionGeometry.quad();
+#if !HAVE(REDESIGNED_TEXT_CURSOR)
     scaledQuad.scale(_scaleFactor);
+#endif
     return adoptNS([[WKTextSelectionRectCustomHandleInfo alloc] initWithFloatQuad:scaledQuad isHorizontal:_selectionGeometry.isHorizontal()]).autorelease();
 }
 

Tools/TestRunnerShared/UIScriptContext/Bindings/UIScriptController.idl

@@ -324,6 +324,7 @@ interface UIScriptController {
     readonly attribute object contentVisibleRect;
     readonly attribute object selectionStartGrabberViewRect;
     readonly attribute object selectionEndGrabberViewRect;
+    readonly attribute object selectionEndGrabberViewShapePathDescription;
     readonly attribute object selectionCaretViewRect;
     readonly attribute object selectionCaretViewRectInGlobalCoordinates;
     readonly attribute object selectionRangeViewRects;

Tools/TestRunnerShared/UIScriptContext/UIScriptController.h

@@ -308,6 +308,7 @@ class UIScriptController : public JSWrappable {
     virtual JSObjectRef textSelectionCaretRect() const { notImplemented(); return nullptr; }
     virtual JSObjectRef selectionStartGrabberViewRect() const { notImplemented(); return nullptr; }
     virtual JSObjectRef selectionEndGrabberViewRect() const { notImplemented(); return nullptr; }
+    virtual JSObjectRef selectionEndGrabberViewShapePathDescription() const { notImplemented(); return nullptr; }
     virtual JSObjectRef selectionCaretViewRect() const { notImplemented(); return nullptr; }
     virtual JSObjectRef selectionCaretViewRectInGlobalCoordinates() const { notImplemented(); return nullptr; }
     virtual JSObjectRef selectionRangeViewRects() const { notImplemented(); return nullptr; }

Tools/WebKitTestRunner/ios/UIScriptControllerIOS.h

@@ -116,6 +116,7 @@ class UIScriptControllerIOS final : public UIScriptControllerCocoa {
     JSObjectRef contentVisibleRect() const override;
     JSObjectRef selectionStartGrabberViewRect() const override;
     JSObjectRef selectionEndGrabberViewRect() const override;
+    JSObjectRef selectionEndGrabberViewShapePathDescription() const override;
     JSObjectRef selectionCaretViewRect() const override;
     JSObjectRef selectionCaretViewRectInGlobalCoordinates() const override;
     JSObjectRef selectionCaretViewRect(id<UICoordinateSpace>) const;

Tools/WebKitTestRunner/ios/UIScriptControllerIOS.mm

@@ -106,6 +106,46 @@ static BOOL returnNo()
     };
 }
 
+static RetainPtr<NSDictionary> toNSDictionary(CGPathRef path)
+{
+    auto pathElementTypeToString = [](CGPathElementType type) {
+        switch (type) {
+        case kCGPathElementMoveToPoint:
+            return @"MoveToPoint";
+
+        case kCGPathElementAddLineToPoint:
+            return @"AddLineToPoint";
+
+        case kCGPathElementAddQuadCurveToPoint:
+            return @"AddQuadCurveToPoint";
+
+        case kCGPathElementAddCurveToPoint:
+            return @"AddCurveToPoint";
+
+        case kCGPathElementCloseSubpath:
+            return @"CloseSubpath";
+
+        default:
+            return @"Unknown";
+        }
+    };
+
+    auto attributes = adoptNS([[NSMutableDictionary alloc] init]);
+
+    CGPathApplyWithBlock(path, ^(const CGPathElement *element) {
+        if (!element)
+            return;
+
+        NSString *typeString = pathElementTypeToString(element->type);
+        [attributes setObject:@{
+            @"x": @(element->points->x),
+            @"y": @(element->points->y),
+        } forKey:typeString];
+    });
+
+    return attributes;
+}
+
 static Vector<String> parseModifierArray(JSContextRef context, JSValueRef arrayValue)
 {
     if (!arrayValue)
@@ -882,6 +922,21 @@ static void clipSelectionViewRectToContentView(CGRect& rect, UIView *contentView
     return JSValueToObject(jsContext, [JSValue valueWithObject:toNSDictionary(frameInContentViewCoordinates) inContext:[JSContext contextWithJSGlobalContextRef:jsContext]].JSValueRef, nullptr);
 }
 
+JSObjectRef UIScriptControllerIOS::selectionEndGrabberViewShapePathDescription() const
+{
+    UIView *handleView = nil;
+
+#if HAVE(UI_TEXT_SELECTION_DISPLAY_INTERACTION)
+    if (auto view = textSelectionDisplayInteraction().handleViews.lastObject; !isHiddenOrHasHiddenAncestor(view))
+        handleView = view;
+#else
+    UIView *contentView = platformContentView();
+    handleView = [contentView valueForKeyPath:@"interactionAssistant.selectionView.rangeView.endGrabber"];
+#endif
+
+    return JSValueToObject(m_context->jsContext(), [JSValue valueWithObject:toNSDictionary((CGPathRef)[handleView valueForKeyPath:@"stemView.shapeLayer.path"]).get() inContext:[JSContext contextWithJSGlobalContextRef:m_context->jsContext()]].JSValueRef, nullptr);
+}
+
 JSObjectRef UIScriptControllerIOS::selectionCaretViewRect(id<UICoordinateSpace> coordinateSpace) const
 {
     UIView *contentView = platformContentView();