????
Your IP : 216.73.216.217
/////////////////////////////////////////////////////////////
//
// pgAdmin 4 - PostgreSQL Tools
//
// Copyright (C) 2013 - 2024, The pgAdmin Development Team
// This software is released under the PostgreSQL Licence
//
//////////////////////////////////////////////////////////////
import _ from 'lodash';
import React from 'react';
export const DepListenerContext = React.createContext();
export default class DepListener {
constructor() {
this._depListeners = [];
}
/* Will keep track of the dependent fields and there callbacks */
addDepListener(source, dest, callback, defCallback) {
this._depListeners = this._depListeners || [];
this._depListeners.push({
source: source,
dest: dest,
callback: callback,
defCallback: defCallback
});
}
removeDepListener(dest) {
this._depListeners = _.filter(this._depListeners, (l)=>!_.join(l.dest, '|').startsWith(_.join(dest, '|')));
}
_getListenerData(state, listener, actionObj) {
/* Get data at same level */
let data = state;
let dataPath = _.slice(listener.dest, 0, -1);
if(dataPath.length > 0) {
data = _.get(state, dataPath);
}
_.assign(data, listener.callback?.(data, listener.source, state, actionObj) || {});
return state;
}
_getDefListenerPromise(state, listener, actionObj) {
/* Get data at same level */
let data = state;
let dataPath = _.slice(listener.dest, 0, -1);
if(dataPath.length > 0) {
data = _.get(state, dataPath);
}
return (listener.defCallback?.(data, listener.source, state, actionObj));
}
/* Called when any field changed and trigger callbacks */
getDepChange(currPath, state, actionObj) {
/* If this comes from deferred change */
if(actionObj.listener?.callback) {
state = this._getListenerData(state, actionObj.listener, actionObj);
} else {
// adding a extra item in path to avoid incorrect matching like shared and shared_username
let allListeners = _.filter(this._depListeners, (entry)=>_.join(currPath.concat(['']), '|').startsWith(_.join(entry.source.concat(['']), '|')));
if(allListeners) {
for(const listener of allListeners) {
state = this._getListenerData(state, listener, actionObj);
}
}
}
return state;
}
getDeferredDepChange(currPath, state, actionObj) {
let deferredList = [];
let allListeners = _.filter(this._depListeners, (entry)=>_.join(currPath, '|').startsWith(_.join(entry.source, '|')));
if(allListeners) {
for(const listener of allListeners) {
if(listener.defCallback) {
let thePromise = this._getDefListenerPromise(state, listener, actionObj);
if(thePromise) {
deferredList.push({
action: actionObj,
promise: thePromise,
listener: listener,
});
}
}
}
}
return deferredList;
}
}