big documentation update - all public functions and classes are documented now
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@@ -30,6 +30,9 @@ export function getListItemIDByPosition (type, i) {
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}
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}
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/**
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* Abstract Yjs Type class
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*/
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export default class Type extends Item {
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constructor () {
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super()
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@@ -39,6 +42,20 @@ export default class Type extends Item {
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this._eventHandler = new EventHandler()
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this._deepEventHandler = new EventHandler()
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}
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/**
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* Compute the path from this type to the specified target.
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*
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* @example
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* It should be accessible via `this.get(result[0]).get(result[1])..``
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* const path = type.getPathTo(child)
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* // assuming `type instanceof YArray`
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* console.log(path) // might look like => [2, 'key1']
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* child === type.get(path[0]).get(path[1])
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*
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* @param {YType} type Type target
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* @return {Array<string>} Path to the target
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*/
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getPathTo (type) {
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if (type === this) {
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return []
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@@ -65,6 +82,12 @@ export default class Type extends Item {
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}
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return path
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}
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/**
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* @private
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* Call event listeners with an event. This will also add an event to all
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* parents (for `.observeDeep` handlers).
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*/
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_callEventHandler (transaction, event) {
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const changedParentTypes = transaction.changedParentTypes
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this._eventHandler.callEventListeners(transaction, event)
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@@ -79,6 +102,14 @@ export default class Type extends Item {
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type = type._parent
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}
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}
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/**
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* @private
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* Helper method to transact if the y instance is available.
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*
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* TODO: Currently event handlers are not thrown when a type is not registered
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* with a Yjs instance.
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*/
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_transact (f) {
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const y = this._y
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if (y !== null) {
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@@ -87,18 +118,53 @@ export default class Type extends Item {
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f(y)
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}
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}
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/**
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* Observe all events that are created on this type.
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*
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* @param {Function} f Observer function
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*/
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observe (f) {
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this._eventHandler.addEventListener(f)
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}
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/**
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* Observe all events that are created by this type and its children.
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*
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* @param {Function} f Observer function
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*/
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observeDeep (f) {
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this._deepEventHandler.addEventListener(f)
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}
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/**
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* Unregister an observer function.
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*
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* @param {Function} f Observer function
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*/
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unobserve (f) {
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this._eventHandler.removeEventListener(f)
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}
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/**
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* Unregister an observer function.
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*
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* @param {Function} f Observer function
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*/
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unobserveDeep (f) {
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this._deepEventHandler.removeEventListener(f)
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}
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/**
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* @private
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* Integrate this type into the Yjs instance.
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*
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* * Save this struct in the os
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* * This type is sent to other client
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* * Observer functions are fired
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*
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* @param {Y} y The Yjs instance
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*/
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_integrate (y) {
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super._integrate(y)
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this._y = y
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@@ -117,6 +183,15 @@ export default class Type extends Item {
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integrateChildren(y, t)
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}
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}
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/**
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* @private
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* Mark this Item as deleted.
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*
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* @param {Y} y The Yjs instance
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* @param {boolean} createDelete Whether to propagate a message that this
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* Type was deleted.
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*/
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_delete (y, createDelete) {
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super._delete(y, createDelete)
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y._transaction.changedTypes.delete(this)
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