Renamed viewport in AsyncAttachmentDelegate to avoid conflict with the same in Editor (#249)

Author: rajdeep

Diff for: ExampleApp/ExampleApp/AdvancedFeatures/CommandsExampleViewController.swift

@@ -468,7 +468,7 @@ class ListFormattingProvider: EditorListFormattingProvider {
 }
 
 extension CommandsExampleViewController: AsyncAttachmentRenderingDelegate {
-    var viewport: CGRect? { nil }
+    var prioritizedViewport: CGRect? { nil }
 
     func shouldRenderAsync(attachment: Proton.Attachment) -> Bool {
         attachment is GridViewAttachment

Diff for: Proton/Sources/Swift/Attachment/Attachment.swift

@@ -48,7 +48,7 @@ public protocol AsyncAttachmentRenderingDelegate: AnyObject {
     /// `EditorView` also has a `viewport` property that also depends on this property.
     /// Care must be taken to not to return `editor.viewport` here. Doing so will cause a stack overflow crash.
     /// An independently calculated value can safely be returned here.
-    var viewport: CGRect? { get }
+    var prioritizedViewport: CGRect? { get }
 
     /// Determines if particular attachment should be rendered asynchronously.
     /// The check may also be used to render certain types of attachments synchronously or asynchronously.

Diff for: Proton/Sources/Swift/Editor/EditorView.swift

@@ -555,7 +555,7 @@ open class EditorView: UIView {
     /// A `ViewportProvider` may be needed in cases where `EditorView` is hosted inside another `UIScrollView` and the
     /// viewport needs to be calculated based on the viewport of container `UIScrollView`.
     open var viewport: CGRect {
-        return asyncAttachmentRenderingDelegate?.viewport ?? richTextView.viewport
+        return asyncAttachmentRenderingDelegate?.prioritizedViewport ?? richTextView.viewport
     }
 
     /// Returns the visible text range. In case of non-scrollable `EditorView`, entire range is `visibleRange`.

Diff for: Proton/Tests/Editor/EditorViewportSnapshotTests.swift

@@ -61,7 +61,7 @@ class EditorViewportSnapshotTests: SnapshotTestCase {
         var renderingNotified = false
         asyncRenderingDelegate.onDidCompleteRenderingViewport = { viewport, _ in
             renderingNotified = true
-            XCTAssertEqual(viewport, asyncRenderingDelegate.viewport)
+            XCTAssertEqual(viewport, asyncRenderingDelegate.prioritizedViewport)
         }
 
         DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
@@ -104,7 +104,7 @@ class EditorViewportSnapshotTests: SnapshotTestCase {
         editor.attributedText = text
 
         asyncRenderingDelegate.onDidCompleteRenderingViewport = { viewport, _ in
-            XCTAssertEqual(viewport, asyncRenderingDelegate.viewport)
+            XCTAssertEqual(viewport, asyncRenderingDelegate.prioritizedViewport)
             assertSnapshot(matching: viewController.view, as: .image, record: self.recordMode)
             ex.fulfill()
         }
@@ -143,17 +143,17 @@ class EditorViewportSnapshotTests: SnapshotTestCase {
             text.append(NSAttributedString(string: "Text after panel"))
         }
         editor.attributedText = text
-        var expectedViewport = asyncRenderingDelegate.viewport
+        var expectedViewport = asyncRenderingDelegate.prioritizedViewport
 
         asyncRenderingDelegate.onDidCompleteRenderingViewport = { viewport, _ in
             XCTAssertEqual(viewport, expectedViewport)
             assertSnapshot(matching: viewController.view, as: .image, record: self.recordMode)
-            asyncRenderingDelegate.viewport =  CGRect(
+            asyncRenderingDelegate.prioritizedViewport =  CGRect(
                 origin: CGPoint(x: 0, y: 600),
                 size: CGSize(width: 260, height: 200)
             )
-            viewportBorderView.frame = asyncRenderingDelegate.viewport ?? viewportBorderView.frame
-            expectedViewport = asyncRenderingDelegate.viewport
+            viewportBorderView.frame = asyncRenderingDelegate.prioritizedViewport ?? viewportBorderView.frame
+            expectedViewport = asyncRenderingDelegate.prioritizedViewport
             ex.fulfill()
         }
 

Diff for: Proton/Tests/Editor/Mocks/MockAsyncAttachmentRenderingDelegate.swift

@@ -24,13 +24,13 @@ import UIKit
 import Proton
 
 class MockAsyncAttachmentRenderingDelegate: AsyncAttachmentRenderingDelegate {
-    var viewport: CGRect?
+    var prioritizedViewport: CGRect?
     var onShouldRenderAsync: (Attachment) -> Bool = { _ in return true }
     var onDidRenderAttachment: ((Attachment, EditorView) -> Void)?
     var onDidCompleteRenderingViewport: ((CGRect, EditorView) -> Void)?
 
     init(viewport: CGRect? = nil) {
-        self.viewport = viewport
+        self.prioritizedViewport = viewport
     }
 
     func shouldRenderAsync(attachment: Attachment) -> Bool {