node_modules

1 files changed, 449 insertions, 0 deletions

diff --git a/node_modules/react-dom/lib/ReactMultiChild.js b/node_modules/react-dom/lib/ReactMultiChild.js
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+/**
+ * Copyright 2013-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+'use strict';
+
+var _prodInvariant = require('./reactProdInvariant');
+
+var ReactComponentEnvironment = require('./ReactComponentEnvironment');
+var ReactInstanceMap = require('./ReactInstanceMap');
+var ReactInstrumentation = require('./ReactInstrumentation');
+
+var ReactCurrentOwner = require('react/lib/ReactCurrentOwner');
+var ReactReconciler = require('./ReactReconciler');
+var ReactChildReconciler = require('./ReactChildReconciler');
+
+var emptyFunction = require('fbjs/lib/emptyFunction');
+var flattenChildren = require('./flattenChildren');
+var invariant = require('fbjs/lib/invariant');
+
+/**
+ * Make an update for markup to be rendered and inserted at a supplied index.
+ *
+ * @param {string} markup Markup that renders into an element.
+ * @param {number} toIndex Destination index.
+ * @private
+ */
+function makeInsertMarkup(markup, afterNode, toIndex) {
+  // NOTE: Null values reduce hidden classes.
+  return {
+    type: 'INSERT_MARKUP',
+    content: markup,
+    fromIndex: null,
+    fromNode: null,
+    toIndex: toIndex,
+    afterNode: afterNode
+  };
+}
+
+/**
+ * Make an update for moving an existing element to another index.
+ *
+ * @param {number} fromIndex Source index of the existing element.
+ * @param {number} toIndex Destination index of the element.
+ * @private
+ */
+function makeMove(child, afterNode, toIndex) {
+  // NOTE: Null values reduce hidden classes.
+  return {
+    type: 'MOVE_EXISTING',
+    content: null,
+    fromIndex: child._mountIndex,
+    fromNode: ReactReconciler.getHostNode(child),
+    toIndex: toIndex,
+    afterNode: afterNode
+  };
+}
+
+/**
+ * Make an update for removing an element at an index.
+ *
+ * @param {number} fromIndex Index of the element to remove.
+ * @private
+ */
+function makeRemove(child, node) {
+  // NOTE: Null values reduce hidden classes.
+  return {
+    type: 'REMOVE_NODE',
+    content: null,
+    fromIndex: child._mountIndex,
+    fromNode: node,
+    toIndex: null,
+    afterNode: null
+  };
+}
+
+/**
+ * Make an update for setting the markup of a node.
+ *
+ * @param {string} markup Markup that renders into an element.
+ * @private
+ */
+function makeSetMarkup(markup) {
+  // NOTE: Null values reduce hidden classes.
+  return {
+    type: 'SET_MARKUP',
+    content: markup,
+    fromIndex: null,
+    fromNode: null,
+    toIndex: null,
+    afterNode: null
+  };
+}
+
+/**
+ * Make an update for setting the text content.
+ *
+ * @param {string} textContent Text content to set.
+ * @private
+ */
+function makeTextContent(textContent) {
+  // NOTE: Null values reduce hidden classes.
+  return {
+    type: 'TEXT_CONTENT',
+    content: textContent,
+    fromIndex: null,
+    fromNode: null,
+    toIndex: null,
+    afterNode: null
+  };
+}
+
+/**
+ * Push an update, if any, onto the queue. Creates a new queue if none is
+ * passed and always returns the queue. Mutative.
+ */
+function enqueue(queue, update) {
+  if (update) {
+    queue = queue || [];
+    queue.push(update);
+  }
+  return queue;
+}
+
+/**
+ * Processes any enqueued updates.
+ *
+ * @private
+ */
+function processQueue(inst, updateQueue) {
+  ReactComponentEnvironment.processChildrenUpdates(inst, updateQueue);
+}
+
+var setChildrenForInstrumentation = emptyFunction;
+if (process.env.NODE_ENV !== 'production') {
+  var getDebugID = function (inst) {
+    if (!inst._debugID) {
+      // Check for ART-like instances. TODO: This is silly/gross.
+      var internal;
+      if (internal = ReactInstanceMap.get(inst)) {
+        inst = internal;
+      }
+    }
+    return inst._debugID;
+  };
+  setChildrenForInstrumentation = function (children) {
+    var debugID = getDebugID(this);
+    // TODO: React Native empty components are also multichild.
+    // This means they still get into this method but don't have _debugID.
+    if (debugID !== 0) {
+      ReactInstrumentation.debugTool.onSetChildren(debugID, children ? Object.keys(children).map(function (key) {
+        return children[key]._debugID;
+      }) : []);
+    }
+  };
+}
+
+/**
+ * ReactMultiChild are capable of reconciling multiple children.
+ *
+ * @class ReactMultiChild
+ * @internal
+ */
+var ReactMultiChild = {
+
+  /**
+   * Provides common functionality for components that must reconcile multiple
+   * children. This is used by `ReactDOMComponent` to mount, update, and
+   * unmount child components.
+   *
+   * @lends {ReactMultiChild.prototype}
+   */
+  Mixin: {
+
+    _reconcilerInstantiateChildren: function (nestedChildren, transaction, context) {
+      if (process.env.NODE_ENV !== 'production') {
+        var selfDebugID = getDebugID(this);
+        if (this._currentElement) {
+          try {
+            ReactCurrentOwner.current = this._currentElement._owner;
+            return ReactChildReconciler.instantiateChildren(nestedChildren, transaction, context, selfDebugID);
+          } finally {
+            ReactCurrentOwner.current = null;
+          }
+        }
+      }
+      return ReactChildReconciler.instantiateChildren(nestedChildren, transaction, context);
+    },
+
+    _reconcilerUpdateChildren: function (prevChildren, nextNestedChildrenElements, mountImages, removedNodes, transaction, context) {
+      var nextChildren;
+      var selfDebugID = 0;
+      if (process.env.NODE_ENV !== 'production') {
+        selfDebugID = getDebugID(this);
+        if (this._currentElement) {
+          try {
+            ReactCurrentOwner.current = this._currentElement._owner;
+            nextChildren = flattenChildren(nextNestedChildrenElements, selfDebugID);
+          } finally {
+            ReactCurrentOwner.current = null;
+          }
+          ReactChildReconciler.updateChildren(prevChildren, nextChildren, mountImages, removedNodes, transaction, this, this._hostContainerInfo, context, selfDebugID);
+          return nextChildren;
+        }
+      }
+      nextChildren = flattenChildren(nextNestedChildrenElements, selfDebugID);
+      ReactChildReconciler.updateChildren(prevChildren, nextChildren, mountImages, removedNodes, transaction, this, this._hostContainerInfo, context, selfDebugID);
+      return nextChildren;
+    },
+
+    /**
+     * Generates a "mount image" for each of the supplied children. In the case
+     * of `ReactDOMComponent`, a mount image is a string of markup.
+     *
+     * @param {?object} nestedChildren Nested child maps.
+     * @return {array} An array of mounted representations.
+     * @internal
+     */
+    mountChildren: function (nestedChildren, transaction, context) {
+      var children = this._reconcilerInstantiateChildren(nestedChildren, transaction, context);
+      this._renderedChildren = children;
+
+      var mountImages = [];
+      var index = 0;
+      for (var name in children) {
+        if (children.hasOwnProperty(name)) {
+          var child = children[name];
+          var selfDebugID = 0;
+          if (process.env.NODE_ENV !== 'production') {
+            selfDebugID = getDebugID(this);
+          }
+          var mountImage = ReactReconciler.mountComponent(child, transaction, this, this._hostContainerInfo, context, selfDebugID);
+          child._mountIndex = index++;
+          mountImages.push(mountImage);
+        }
+      }
+
+      if (process.env.NODE_ENV !== 'production') {
+        setChildrenForInstrumentation.call(this, children);
+      }
+
+      return mountImages;
+    },
+
+    /**
+     * Replaces any rendered children with a text content string.
+     *
+     * @param {string} nextContent String of content.
+     * @internal
+     */
+    updateTextContent: function (nextContent) {
+      var prevChildren = this._renderedChildren;
+      // Remove any rendered children.
+      ReactChildReconciler.unmountChildren(prevChildren, false);
+      for (var name in prevChildren) {
+        if (prevChildren.hasOwnProperty(name)) {
+          !false ? process.env.NODE_ENV !== 'production' ? invariant(false, 'updateTextContent called on non-empty component.') : _prodInvariant('118') : void 0;
+        }
+      }
+      // Set new text content.
+      var updates = [makeTextContent(nextContent)];
+      processQueue(this, updates);
+    },
+
+    /**
+     * Replaces any rendered children with a markup string.
+     *
+     * @param {string} nextMarkup String of markup.
+     * @internal
+     */
+    updateMarkup: function (nextMarkup) {
+      var prevChildren = this._renderedChildren;
+      // Remove any rendered children.
+      ReactChildReconciler.unmountChildren(prevChildren, false);
+      for (var name in prevChildren) {
+        if (prevChildren.hasOwnProperty(name)) {
+          !false ? process.env.NODE_ENV !== 'production' ? invariant(false, 'updateTextContent called on non-empty component.') : _prodInvariant('118') : void 0;
+        }
+      }
+      var updates = [makeSetMarkup(nextMarkup)];
+      processQueue(this, updates);
+    },
+
+    /**
+     * Updates the rendered children with new children.
+     *
+     * @param {?object} nextNestedChildrenElements Nested child element maps.
+     * @param {ReactReconcileTransaction} transaction
+     * @internal
+     */
+    updateChildren: function (nextNestedChildrenElements, transaction, context) {
+      // Hook used by React ART
+      this._updateChildren(nextNestedChildrenElements, transaction, context);
+    },
+
+    /**
+     * @param {?object} nextNestedChildrenElements Nested child element maps.
+     * @param {ReactReconcileTransaction} transaction
+     * @final
+     * @protected
+     */
+    _updateChildren: function (nextNestedChildrenElements, transaction, context) {
+      var prevChildren = this._renderedChildren;
+      var removedNodes = {};
+      var mountImages = [];
+      var nextChildren = this._reconcilerUpdateChildren(prevChildren, nextNestedChildrenElements, mountImages, removedNodes, transaction, context);
+      if (!nextChildren && !prevChildren) {
+        return;
+      }
+      var updates = null;
+      var name;
+      // `nextIndex` will increment for each child in `nextChildren`, but
+      // `lastIndex` will be the last index visited in `prevChildren`.
+      var nextIndex = 0;
+      var lastIndex = 0;
+      // `nextMountIndex` will increment for each newly mounted child.
+      var nextMountIndex = 0;
+      var lastPlacedNode = null;
+      for (name in nextChildren) {
+        if (!nextChildren.hasOwnProperty(name)) {
+          continue;
+        }
+        var prevChild = prevChildren && prevChildren[name];
+        var nextChild = nextChildren[name];
+        if (prevChild === nextChild) {
+          updates = enqueue(updates, this.moveChild(prevChild, lastPlacedNode, nextIndex, lastIndex));
+          lastIndex = Math.max(prevChild._mountIndex, lastIndex);
+          prevChild._mountIndex = nextIndex;
+        } else {
+          if (prevChild) {
+            // Update `lastIndex` before `_mountIndex` gets unset by unmounting.
+            lastIndex = Math.max(prevChild._mountIndex, lastIndex);
+            // The `removedNodes` loop below will actually remove the child.
+          }
+          // The child must be instantiated before it's mounted.
+          updates = enqueue(updates, this._mountChildAtIndex(nextChild, mountImages[nextMountIndex], lastPlacedNode, nextIndex, transaction, context));
+          nextMountIndex++;
+        }
+        nextIndex++;
+        lastPlacedNode = ReactReconciler.getHostNode(nextChild);
+      }
+      // Remove children that are no longer present.
+      for (name in removedNodes) {
+        if (removedNodes.hasOwnProperty(name)) {
+          updates = enqueue(updates, this._unmountChild(prevChildren[name], removedNodes[name]));
+        }
+      }
+      if (updates) {
+        processQueue(this, updates);
+      }
+      this._renderedChildren = nextChildren;
+
+      if (process.env.NODE_ENV !== 'production') {
+        setChildrenForInstrumentation.call(this, nextChildren);
+      }
+    },
+
+    /**
+     * Unmounts all rendered children. This should be used to clean up children
+     * when this component is unmounted. It does not actually perform any
+     * backend operations.
+     *
+     * @internal
+     */
+    unmountChildren: function (safely) {
+      var renderedChildren = this._renderedChildren;
+      ReactChildReconciler.unmountChildren(renderedChildren, safely);
+      this._renderedChildren = null;
+    },
+
+    /**
+     * Moves a child component to the supplied index.
+     *
+     * @param {ReactComponent} child Component to move.
+     * @param {number} toIndex Destination index of the element.
+     * @param {number} lastIndex Last index visited of the siblings of `child`.
+     * @protected
+     */
+    moveChild: function (child, afterNode, toIndex, lastIndex) {
+      // If the index of `child` is less than `lastIndex`, then it needs to
+      // be moved. Otherwise, we do not need to move it because a child will be
+      // inserted or moved before `child`.
+      if (child._mountIndex < lastIndex) {
+        return makeMove(child, afterNode, toIndex);
+      }
+    },
+
+    /**
+     * Creates a child component.
+     *
+     * @param {ReactComponent} child Component to create.
+     * @param {string} mountImage Markup to insert.
+     * @protected
+     */
+    createChild: function (child, afterNode, mountImage) {
+      return makeInsertMarkup(mountImage, afterNode, child._mountIndex);
+    },
+
+    /**
+     * Removes a child component.
+     *
+     * @param {ReactComponent} child Child to remove.
+     * @protected
+     */
+    removeChild: function (child, node) {
+      return makeRemove(child, node);
+    },
+
+    /**
+     * Mounts a child with the supplied name.
+     *
+     * NOTE: This is part of `updateChildren` and is here for readability.
+     *
+     * @param {ReactComponent} child Component to mount.
+     * @param {string} name Name of the child.
+     * @param {number} index Index at which to insert the child.
+     * @param {ReactReconcileTransaction} transaction
+     * @private
+     */
+    _mountChildAtIndex: function (child, mountImage, afterNode, index, transaction, context) {
+      child._mountIndex = index;
+      return this.createChild(child, afterNode, mountImage);
+    },
+
+    /**
+     * Unmounts a rendered child.
+     *
+     * NOTE: This is part of `updateChildren` and is here for readability.
+     *
+     * @param {ReactComponent} child Component to unmount.
+     * @private
+     */
+    _unmountChild: function (child, node) {
+      var update = this.removeChild(child, node);
+      child._mountIndex = null;
+      return update;
+    }
+
+  }
+
+};
+
+module.exports = ReactMultiChild;
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