move fabric to ReactCommon/react/renderer

Summary:
This diff moves fabric C++ code from ReactCommon/fabric to ReactCommon/react/renderer
As part of this diff I also refactored components, codegen and callsites on CatalystApp, FB4A and venice

Script: P137350694

changelog: [internal] internal refactor

Reviewed By: fkgozali

Differential Revision: D22852139

fbshipit-source-id: f85310ba858b6afd81abfd9cbe6d70b28eca7415

ReactCommon/react/renderer/components/textinput/androidtextinput/AndroidTextInputShadowNode.cpp

@@ -0,0 +1,200 @@
+/*
+ * 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.
+ */
+
+#include "AndroidTextInputShadowNode.h"
+
+#include <fbjni/fbjni.h>
+#include <react/jni/ReadableNativeMap.h>
+#include <react/renderer/attributedstring/AttributedStringBox.h>
+#include <react/renderer/attributedstring/TextAttributes.h>
+#include <react/renderer/components/text/BaseTextShadowNode.h>
+#include <react/renderer/core/LayoutConstraints.h>
+#include <react/renderer/core/LayoutContext.h>
+#include <react/renderer/core/conversions.h>
+
+using namespace facebook::jni;
+
+namespace facebook {
+namespace react {
+
+extern const char AndroidTextInputComponentName[] = "AndroidTextInput";
+
+void AndroidTextInputShadowNode::setContextContainer(
+    ContextContainer *contextContainer) {
+  ensureUnsealed();
+  contextContainer_ = contextContainer;
+}
+
+AttributedString AndroidTextInputShadowNode::getAttributedString() const {
+  // Use BaseTextShadowNode to get attributed string from children
+  auto childTextAttributes = TextAttributes::defaultTextAttributes();
+  childTextAttributes.apply(getConcreteProps().textAttributes);
+
+  auto attributedString = AttributedString{};
+  auto attachments = BaseTextShadowNode::Attachments{};
+  BaseTextShadowNode::buildAttributedString(
+      childTextAttributes, *this, attributedString, attachments);
+
+  // BaseTextShadowNode only gets children. We must detect and prepend text
+  // value attributes manually.
+  if (!getConcreteProps().text.empty()) {
+    auto textAttributes = TextAttributes::defaultTextAttributes();
+    textAttributes.apply(getConcreteProps().textAttributes);
+    auto fragment = AttributedString::Fragment{};
+    fragment.string = getConcreteProps().text;
+    fragment.textAttributes = textAttributes;
+    // If the TextInput opacity is 0 < n < 1, the opacity of the TextInput and
+    // text value's background will stack. This is a hack/workaround to prevent
+    // that effect.
+    fragment.textAttributes.backgroundColor = clearColor();
+    fragment.parentShadowView = ShadowView(*this);
+    attributedString.prependFragment(fragment);
+  }
+
+  return attributedString;
+}
+
+// For measurement purposes, we want to make sure that there's at least a
+// single character in the string so that the measured height is greater
+// than zero. Otherwise, empty TextInputs with no placeholder don't
+// display at all.
+// TODO T67606511: We will redefine the measurement of empty strings as part
+// of T67606511
+AttributedString AndroidTextInputShadowNode::getPlaceholderAttributedString()
+    const {
+  // Return placeholder text, since text and children are empty.
+  auto textAttributedString = AttributedString{};
+  auto fragment = AttributedString::Fragment{};
+  fragment.string = getConcreteProps().placeholder;
+
+  if (fragment.string.empty()) {
+    fragment.string = BaseTextShadowNode::getEmptyPlaceholder();
+  }
+
+  auto textAttributes = TextAttributes::defaultTextAttributes();
+  textAttributes.apply(getConcreteProps().textAttributes);
+
+  // If there's no text, it's possible that this Fragment isn't actually
+  // appended to the AttributedString (see implementation of appendFragment)
+  fragment.textAttributes = textAttributes;
+  fragment.parentShadowView = ShadowView(*this);
+  textAttributedString.appendFragment(fragment);
+
+  return textAttributedString;
+}
+
+void AndroidTextInputShadowNode::setTextLayoutManager(
+    SharedTextLayoutManager textLayoutManager) {
+  ensureUnsealed();
+  textLayoutManager_ = textLayoutManager;
+}
+
+AttributedString AndroidTextInputShadowNode::getMostRecentAttributedString()
+    const {
+  auto const &state = getStateData();
+
+  auto reactTreeAttributedString = getAttributedString();
+
+  // Sometimes the treeAttributedString will only differ from the state
+  // not by inherent properties (string or prop attributes), but by the frame of
+  // the parent which has changed Thus, we can't directly compare the entire
+  // AttributedString
+  bool treeAttributedStringChanged =
+      !state.reactTreeAttributedString.compareTextAttributesWithoutFrame(
+          reactTreeAttributedString);
+
+  return (
+      !treeAttributedStringChanged ? state.attributedString
+                                   : reactTreeAttributedString);
+}
+
+void AndroidTextInputShadowNode::updateStateIfNeeded() {
+  ensureUnsealed();
+
+  auto reactTreeAttributedString = getAttributedString();
+  auto const &state = getStateData();
+
+  assert(textLayoutManager_);
+  assert(
+      (!state.layoutManager || state.layoutManager == textLayoutManager_) &&
+      "`StateData` refers to a different `TextLayoutManager`");
+
+  // Tree is often out of sync with the value of the TextInput.
+  // This is by design - don't change the value of the TextInput in the State,
+  // and therefore in Java, unless the tree itself changes.
+  if (state.reactTreeAttributedString == reactTreeAttributedString &&
+      state.layoutManager == textLayoutManager_) {
+    return;
+  }
+
+  // Store default TextAttributes in state.
+  // In the case where the TextInput is completely empty (no value, no
+  // defaultValue, no placeholder, no children) there are therefore no fragments
+  // in the AttributedString, and when State is updated, it needs some way to
+  // reconstruct a Fragment with default TextAttributes.
+  auto defaultTextAttributes = TextAttributes::defaultTextAttributes();
+  defaultTextAttributes.apply(getConcreteProps().textAttributes);
+
+  auto newEventCount =
+      (state.reactTreeAttributedString == reactTreeAttributedString
+           ? 0
+           : getConcreteProps().mostRecentEventCount);
+  auto newAttributedString = getMostRecentAttributedString();
+
+  // Even if we're here and updating state, it may be only to update the layout
+  // manager If that is the case, make sure we don't update text: pass in the
+  // current attributedString unchanged, and pass in zero for the "event count"
+  // so no changes are applied There's no way to prevent a state update from
+  // flowing to Java, so we just ensure it's a noop in those cases.
+  setStateData(AndroidTextInputState{newEventCount,
+                                     newAttributedString,
+                                     reactTreeAttributedString,
+                                     getConcreteProps().paragraphAttributes,
+                                     defaultTextAttributes,
+                                     ShadowView(*this),
+                                     textLayoutManager_,
+                                     state.defaultThemePaddingStart,
+                                     state.defaultThemePaddingEnd,
+                                     state.defaultThemePaddingTop,
+                                     state.defaultThemePaddingBottom});
+}
+
+#pragma mark - LayoutableShadowNode
+
+Size AndroidTextInputShadowNode::measureContent(
+    LayoutContext const &layoutContext,
+    LayoutConstraints const &layoutConstraints) const {
+  // Layout is called right after measure.
+  // Measure is marked as `const`, and `layout` is not; so State can be updated
+  // during layout, but not during `measure`. If State is out-of-date in layout,
+  // it's too late: measure will have already operated on old State. Thus, we
+  // use the same value here that we *will* use in layout to update the state.
+  AttributedString attributedString = getMostRecentAttributedString();
+
+  if (attributedString.isEmpty()) {
+    attributedString = getPlaceholderAttributedString();
+  }
+
+  if (attributedString.isEmpty()) {
+    return {0, 0};
+  }
+
+  return textLayoutManager_
+      ->measure(
+          AttributedStringBox{attributedString},
+          getConcreteProps().paragraphAttributes,
+          layoutConstraints)
+      .size;
+}
+
+void AndroidTextInputShadowNode::layout(LayoutContext layoutContext) {
+  updateStateIfNeeded();
+  ConcreteViewShadowNode::layout(layoutContext);
+}
+
+} // namespace react
+} // namespace facebook