Props setter for RCTRootView

Reviewed By: javache

Differential Revision: D2587673

fb-gh-sync-id: 79fff15b625ed9f4856ec75246ecafd1f7ef95f1

React/Base/RCTRootView.h

@@ -75,10 +75,21 @@ extern NSString *const RCTContentDidAppearNotification;
 @property (nonatomic, strong, readonly) RCTBridge *bridge;
 
 /**
+ * DEPRECATED: access app properties via appProperties property instead
+ *
  * The default properties to apply to the view when the script bundle
  * is first loaded. Defaults to nil/empty.
  */
-@property (nonatomic, copy, readonly) NSDictionary *initialProperties;
+@property (nonatomic, copy, readonly) NSDictionary *initialProperties DEPRECATED_MSG_ATTRIBUTE ("use appProperties instead");
+
+/**
+ * The properties to apply to the view. Use this property to update
+ * application properties and rerender the view. Initialized with
+ * initialProperties argument of the initializer.
+ *
+ * Set this property only on the main thread.
+ */
+@property (nonatomic, copy, readwrite) NSDictionary *appProperties;
 
 /**
  * The class of the RCTJavaScriptExecutor to use with this view.

React/Base/RCTRootView.m

@@ -54,6 +54,7 @@ @implementation RCTRootView
   RCTBridge *_bridge;
   NSString *_moduleName;
   NSDictionary *_launchOptions;
+  NSDictionary *_initialProperties;
   RCTRootContentView *_contentView;
 }
 
@@ -72,6 +73,7 @@ - (instancetype)initWithBridge:(RCTBridge *)bridge
     _bridge = bridge;
     _moduleName = moduleName;
     _initialProperties = [initialProperties copy];
+    _appProperties = [initialProperties copy];
     _loadingViewFadeDelay = 0.25;
     _loadingViewFadeDuration = 0.25;
     _sizeFlexibility = RCTRootViewSizeFlexibilityNone;
@@ -182,10 +184,15 @@ - (void)bundleFinishedLoading:(RCTBridge *)bridge
   _contentView.backgroundColor = self.backgroundColor;
   [self insertSubview:_contentView atIndex:0];
 
+  [self runApplication:bridge];
+}
+
+- (void)runApplication:(RCTBridge *)bridge
+{
   NSString *moduleName = _moduleName ?: @"";
   NSDictionary *appParameters = @{
     @"rootTag": _contentView.reactTag,
-    @"initialProps": _initialProperties ?: @{},
+    @"initialProps": _appProperties ?: @{},
   };
 
   [bridge enqueueJSCall:@"AppRegistry.runApplication"
@@ -208,6 +215,27 @@ - (void)layoutSubviews
   };
 }
 
+- (NSDictionary *)initialProperties
+{
+  RCTLogWarn(@"Using deprecated 'initialProperties' property. Use 'appProperties' instead.");
+  return _initialProperties;
+}
+
+- (void)setAppProperties:(NSDictionary *)appProperties
+{
+  RCTAssertMainThread();
+
+  if ([_appProperties isEqualToDictionary:appProperties]) {
+    return;
+  }
+
+  _appProperties = [appProperties copy];
+
+  if (_bridge.valid && !_bridge.loading) {
+    [self runApplication:_bridge.batchedBridge];
+  }
+}
+
 - (void)setIntrinsicSize:(CGSize)intrinsicSize
 {
   if (!CGSizeEqualToSize(_intrinsicSize, intrinsicSize)) {