From ffa07254de914f7876a17ec2d1ecac1dc10b116a Mon Sep 17 00:00:00 2001
From: Jiayan Zhuang <jiayan0406@fb.com>
Date: Thu, 2 Jul 2020 08:53:42 -0700
Subject: [PATCH] Build the framework for
 RCTParagraphComponentAccessibilityProvider

Summary:
Changelog:
[iOS][Added] - This is the first step to build RCTParagraphComponentAccessibilityProvider.  The main idea of RCTParagraphComponentAccessibilityProvider is to provide an array of accessible elements for the AttributedString in PCTParagraphComponentView.

Reviewed By: sammy-SC

Differential Revision: D22214855

fbshipit-source-id: 69d47555e86452620f89a4b2e21ed6065c8e669c
---
 ...TParagraphComponentAccessibilityProvider.h | 23 ++++++++++
 ...ParagraphComponentAccessibilityProvider.mm | 46 +++++++++++++++++++
 2 files changed, 69 insertions(+)
 create mode 100644 React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentAccessibilityProvider.h
 create mode 100644 React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentAccessibilityProvider.mm

diff --git a/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentAccessibilityProvider.h b/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentAccessibilityProvider.h
new file mode 100644
index 00000000000..30ad700e02a
--- /dev/null
+++ b/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentAccessibilityProvider.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <UIKit/UIKit.h>
+
+#import <react/attributedstring/AttributedString.h>
+
+#import "RCTParagraphComponentView.h"
+
+@interface RCTParagraphComponentAccessibilityProvider : NSObject
+
+- (instancetype)initWithString:(facebook::react::AttributedString)attributedString view:(UIView *)view;
+
+/**
+ @abstract Array of accessibleElements for use in UIAccessibilityContainer implementation.
+*/
+- (NSArray<UIAccessibilityElement *> *)accessibilityElements;
+
+@end
diff --git a/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentAccessibilityProvider.mm b/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentAccessibilityProvider.mm
new file mode 100644
index 00000000000..248e5a437f3
--- /dev/null
+++ b/React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentAccessibilityProvider.mm
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import "RCTParagraphComponentAccessibilityProvider.h"
+
+#import <Foundation/Foundation.h>
+#import <react/components/text/ParagraphProps.h>
+#import <react/textlayoutmanager/RCTTextLayoutManager.h>
+#import <react/textlayoutmanager/TextLayoutManager.h>
+
+#import "RCTConversions.h"
+#import "RCTFabricComponentsPlugins.h"
+
+using namespace facebook::react;
+
+@implementation RCTParagraphComponentAccessibilityProvider {
+  NSMutableArray<UIAccessibilityElement *> *_accessibilityElements;
+  AttributedString _attributedString;
+  __weak UIView *_view;
+}
+
+- (instancetype)initWithString:(AttributedString)attributedString view:(UIView *)view
+{
+  if (self = [super init]) {
+    _attributedString = attributedString;
+    _view = view;
+  }
+  return self;
+}
+
+- (NSArray<UIAccessibilityElement *> *)accessibilityElements
+{
+  // verify if accessibleElements are exist
+  // build an array of the accessibleElements
+  // add first element has the text for the whole textview in order to read out the whole text
+  // add additional elements for those parts of text with embedded link so VoiceOver could specially recognize links
+  // add accessible element for truncation attributed string for automation purposes only
+  _accessibilityElements = [NSMutableArray new];
+  return _accessibilityElements;
+}
+
+@end