449 lines
14 KiB
JavaScript
449 lines
14 KiB
JavaScript
|
/**
|
||
|
|
* 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;
|