How to use StateManager class of PuppeteerSharp.States package

Best Puppeteer-sharp code snippet using PuppeteerSharp.States.StateManager

ChromiumStartingState.cs

Source:ChromiumStartingState.cs Github

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...7namespace PuppeteerSharp.States8{9 internal class ChromiumStartingState : State10 {11 public ChromiumStartingState(StateManager stateManager) : base(stateManager)12 {13 }14 public override Task EnterFromAsync(LauncherBase p, State fromState, TimeSpan timeout)15 {16 if (!StateManager.TryEnter(p, fromState, this))17 {18 // Delegate StartAsync to current state, because it has already changed since19 // transition to this state was initiated.20 return StateManager.CurrentState.StartAsync(p);21 }22 return StartCoreAsync(p);23 }24 public override Task StartAsync(LauncherBase p) => p.StartCompletionSource.Task;25 public override Task ExitAsync(LauncherBase p, TimeSpan timeout) => StateManager.Exiting.EnterFromAsync(p, this, timeout);26 public override Task KillAsync(LauncherBase p) => StateManager.Killing.EnterFromAsync(p, this);27 public override void Dispose(LauncherBase p)28 {29 p.StartCompletionSource.TrySetException(new ObjectDisposedException(p.ToString()));30 base.Dispose(p);31 }32 protected virtual async Task StartCoreAsync(LauncherBase p)33 {34 var output = new StringBuilder();35 void OnProcessDataReceivedWhileStarting(object sender, DataReceivedEventArgs e)36 {37 if (e.Data != null)38 {39 output.AppendLine(e.Data);40 var match = Regex.Match(e.Data, "^DevTools listening on (ws:\\/\\/.*)");41 if (match.Success)42 {43 p.StartCompletionSource.TrySetResult(match.Groups[1].Value);44 }45 }46 }47 void OnProcessExitedWhileStarting(object sender, EventArgs e)48 => p.StartCompletionSource.TrySetException(new ProcessException($"Failed to launch browser! {output}"));49 void OnProcessExited(object sender, EventArgs e) => StateManager.Exited.EnterFrom(p, StateManager.CurrentState);50 p.Process.ErrorDataReceived += OnProcessDataReceivedWhileStarting;51 p.Process.Exited += OnProcessExitedWhileStarting;52 p.Process.Exited += OnProcessExited;53 CancellationTokenSource cts = null;54 try55 {56 p.Process.Start();57 await StateManager.Started.EnterFromAsync(p, this).ConfigureAwait(false);58 p.Process.BeginErrorReadLine();59 var timeout = p.Options.Timeout;60 if (timeout > 0)61 {62 cts = new CancellationTokenSource(timeout);63 cts.Token.Register(() => p.StartCompletionSource.TrySetException(64 new ProcessException($"Timed out after {timeout} ms while trying to connect to Base!")));65 }66 try67 {68 await p.StartCompletionSource.Task.ConfigureAwait(false);69 await StateManager.Started.EnterFromAsync(p, this).ConfigureAwait(false);70 }71 catch72 {73 await StateManager.Killing.EnterFromAsync(p, this).ConfigureAwait(false);74 throw;75 }76 }77 finally78 {79 cts?.Dispose();80 p.Process.Exited -= OnProcessExitedWhileStarting;81 p.Process.ErrorDataReceived -= OnProcessDataReceivedWhileStarting;82 }83 }84 }85}...

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StateManager.cs

Source:StateManager.cs Github

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1using System;2using System.Threading;3namespace PuppeteerSharp.States4{5 internal class StateManager6 {7 private State _currentState;8 public StateManager()9 {10 Initial = new InitialState(this);11 Starting = new ChromiumStartingState(this);12 Started = new StartedState(this);13 Exiting = new ExitingState(this);14 Killing = new KillingState(this);15 Exited = new ExitedState(this);16 Disposed = new DisposedState(this);17 CurrentState = Initial;18 }19 public State CurrentState20 {21 get => _currentState;22 set => _currentState = value;...

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KillingState.cs

Source:KillingState.cs Github

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...3namespace PuppeteerSharp.States4{5 internal class KillingState : State6 {7 public KillingState(StateManager stateManager) : base(stateManager)8 {9 }10 public override async Task EnterFromAsync(LauncherBase p, State fromState, TimeSpan timeout)11 {12 if (!StateManager.TryEnter(p, fromState, this))13 {14 // Delegate KillAsync to current state, because it has already changed since15 // transition to this state was initiated.16 await StateManager.CurrentState.KillAsync(p).ConfigureAwait(false);17 }18 try19 {20 if (!p.Process.HasExited)21 {22 p.Process.Kill();23 }24 }25 catch (InvalidOperationException)26 {27 // Ignore28 return;29 }30 await WaitForExitAsync(p).ConfigureAwait(false);...

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ExitedState.cs

Source:ExitedState.cs Github

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...3namespace PuppeteerSharp.States4{5 internal class ExitedState : State6 {7 public ExitedState(StateManager stateManager) : base(stateManager)8 {9 }10 public void EnterFrom(LauncherBase p, State fromState)11 {12 while (!StateManager.TryEnter(p, fromState, this))13 {14 // Current state has changed since transition to this state was requested.15 // Therefore retry transition to this state from the current state. This ensures16 // that Leave() operation of current state is properly called.17 fromState = StateManager.CurrentState;18 if (fromState == this)19 {20 return;21 }22 }23 p.ExitCompletionSource.TrySetResult(true);24 p.TempUserDataDir?.Dispose();25 }26 public override Task ExitAsync(LauncherBase p, TimeSpan timeout) => Task.CompletedTask;27 public override Task KillAsync(LauncherBase p) => Task.CompletedTask;28 public override Task WaitForExitAsync(LauncherBase p) => Task.CompletedTask;29 }30}...

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ExitingState.cs

Source:ExitingState.cs Github

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...5namespace PuppeteerSharp.States6{7 internal class ExitingState : State8 {9 public ExitingState(StateManager stateManager) : base(stateManager)10 {11 }12 public override Task EnterFromAsync(LauncherBase p, State fromState, TimeSpan timeout)13 => !StateManager.TryEnter(p, fromState, this) ? StateManager.CurrentState.ExitAsync(p, timeout) : ExitAsync(p, timeout);14 public override async Task ExitAsync(LauncherBase p, TimeSpan timeout)15 {16 var waitForExitTask = WaitForExitAsync(p);17 await waitForExitTask.WithTimeout(18 async () =>19 {20 await StateManager.Killing.EnterFromAsync(p, this, timeout).ConfigureAwait(false);21 await waitForExitTask.ConfigureAwait(false);22 },23 timeout,24 CancellationToken.None).ConfigureAwait(false);25 }26 public override Task KillAsync(LauncherBase p) => StateManager.Killing.EnterFromAsync(p, this);27 }28}...

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DisposedState.cs

Source:DisposedState.cs Github

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...3namespace PuppeteerSharp.States4{5 internal class DisposedState : State6 {7 public DisposedState(StateManager stateManager) : base(stateManager)8 {9 }10 public override Task EnterFromAsync(LauncherBase p, State fromState, TimeSpan timeSpan)11 {12 if (fromState == StateManager.Exited)13 {14 return null;15 }16 Kill(p);17 p.ExitCompletionSource.TrySetException(new ObjectDisposedException(p.ToString()));18 p.TempUserDataDir?.Dispose();19 return null;20 }21 public override Task StartAsync(LauncherBase p) => throw new ObjectDisposedException(p.ToString());22 public override Task ExitAsync(LauncherBase p, TimeSpan timeout) => throw new ObjectDisposedException(p.ToString());23 public override Task KillAsync(LauncherBase p) => throw new ObjectDisposedException(p.ToString());24 public override void Dispose(LauncherBase p)25 {26 // Nothing to do...

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InitialState.cs

Source:InitialState.cs Github

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...3namespace PuppeteerSharp.States4{5 internal class InitialState : State6 {7 public InitialState(StateManager stateManager) : base(stateManager)8 {9 }10 public override Task StartAsync(LauncherBase p) => StateManager.Starting.EnterFromAsync(p, this, TimeSpan.Zero);11 public override Task ExitAsync(LauncherBase p, TimeSpan timeout)12 {13 StateManager.Exited.EnterFromAsync(p, this);14 return Task.CompletedTask;15 }16 public override Task KillAsync(LauncherBase p)17 {18 StateManager.Exited.EnterFromAsync(p, this);19 return Task.CompletedTask;20 }21 public override Task WaitForExitAsync(LauncherBase p) => Task.FromException(InvalidOperation("wait for exit"));22 private Exception InvalidOperation(string v)23 {24 throw new NotImplementedException();25 }26 }27}...

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StartedState.cs

Source:StartedState.cs Github

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...3namespace PuppeteerSharp.States4{5 internal class StartedState : State6 {7 public StartedState(StateManager stateManager) : base(stateManager)8 {9 }10 public override Task EnterFromAsync(LauncherBase p, State fromState, TimeSpan timeout)11 {12 StateManager.TryEnter(p, fromState, this);13 return Task.CompletedTask;14 }15 public override Task StartAsync(LauncherBase p) => Task.CompletedTask;16 public override Task ExitAsync(LauncherBase p, TimeSpan timeout) => new ExitingState(StateManager).EnterFromAsync(p, this, timeout);17 public override Task KillAsync(LauncherBase p) => new KillingState(StateManager).EnterFromAsync(p, this);18 }19}...

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StateManager

Using AI Code Generation

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1using PuppeteerSharp.States;2using System;3using System.Threading.Tasks;4{5 {6 static async Task Main(string[] args)7 {8 var stateManager = new StateManager();9 var state = new State();10 state.Add("a", 1);11 state.Add("b", 2);12 await stateManager.SaveStateAsync("state.json", state);13 var restoredState = await stateManager.RestoreStateAsync("state.json");14 Console.WriteLine(restoredState["a"]);15 Console.WriteLine(restoredState["b"]);16 }17 }18}19using PuppeteerSharp.States;20using System;21using System.Threading.Tasks;22{23 {24 static async Task Main(string[] args)25 {26 var stateManager = new StateManager();27 var state = new State();28 state.Add("a", 1);29 state.Add("b", 2);30 await stateManager.SaveStateAsync("state.json", state);31 var restoredState = await stateManager.RestoreStateAsync("state.json");32 Console.WriteLine(restoredState["a"]);33 Console.WriteLine(restoredState["b"]);34 }35 }36}37using PuppeteerSharp.States;38using System;39using System.Threading.Tasks;40{41 {42 static async Task Main(string[] args)43 {44 var stateManager = new StateManager();45 var state = new State();46 state.Add("a", 1);47 state.Add("b", 2);48 await stateManager.SaveStateAsync("state.json", state);49 var restoredState = await stateManager.RestoreStateAsync("state.json");50 Console.WriteLine(restoredState["a"]);51 Console.WriteLine(restoredState["b"]);52 }53 }54}55using PuppeteerSharp.States;56using System;57using System.Threading.Tasks;58{59 {60 static async Task Main(string[] args)61 {62 var stateManager = new StateManager();63 var state = new State();64 state.Add("a", 1);

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StateManager

Using AI Code Generation

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1using PuppeteerSharp.States;2using System;3using System.Threading.Tasks;4{5 {6 static void Main(string[] args)7 {8 MainAsync().Wait();9 }10 static async Task MainAsync()11 {12 var browserFetcher = new BrowserFetcher();13 await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);14 {15 ExecutablePath = browserFetcher.GetExecutablePath(BrowserFetcher.DefaultRevision)16 };17 using (var browser = await Puppeteer.LaunchAsync(options))18 {19 var page = await browser.NewPageAsync();20 await page.ScreenshotAsync("google.png");21 }22 }23 }24}25using PuppeteerSharp.States;26using System;27using System.Threading.Tasks;28{29 {30 static void Main(string[] args)31 {32 MainAsync().Wait();33 }34 static async Task MainAsync()35 {36 var browserFetcher = new BrowserFetcher();37 await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);38 {39 ExecutablePath = browserFetcher.GetExecutablePath(BrowserFetcher.DefaultRevision)40 };41 using (var browser = await Puppeteer.LaunchAsync(options))42 {43 var page = await browser.NewPageAsync();44 await page.ScreenshotAsync("google.png");45 }46 }47 }48}49using PuppeteerSharp.States;50using System;51using System.Threading.Tasks;52{53 {54 static void Main(string[] args)55 {56 MainAsync().Wait();57 }58 static async Task MainAsync()59 {60 var browserFetcher = new BrowserFetcher();61 await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);62 {63 ExecutablePath = browserFetcher.GetExecutablePath(BrowserFetcher.DefaultRevision)64 };65 using (var browser = await Puppeteer

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StateManager

Using AI Code Generation

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1using PuppeteerSharp.States;2using System.Threading.Tasks;3{4 {5 public StateManager(Page page)6 {7 Page = page;8 }9 public Page Page { get; }10 public Dictionary<string, object> State { get; } = new Dictionary<string, object>();11 public async Task SetStateAsync(string key, object value)12 {13 State[key] = value;14 await Page.EvaluateFunctionAsync("key => window[key] = state[key]", key);15 }16 public async Task<T> GetStateAsync<T>(string key)17 {18 var state = await Page.EvaluateFunctionAsync("key => state[key]", key);19 return (T)state;20 }21 }22}23using PuppeteerSharp.States;24using System.Threading.Tasks;25{26 {27 public StateManager(Page page)28 {29 Page = page;30 }31 public Page Page { get; }32 public Dictionary<string, object> State { get; } = new Dictionary<string, object>();33 public async Task SetStateAsync(string key, object value)34 {35 State[key] = value;36 await Page.EvaluateFunctionAsync("key => window[key] = state[key]", key);37 }38 public async Task<T> GetStateAsync<T>(string key)39 {40 var state = await Page.EvaluateFunctionAsync("key => state[key]", key);41 return (T)state;42 }43 }44}45using PuppeteerSharp.States;46using System.Threading.Tasks;47{48 {49 public StateManager(Page page)50 {51 Page = page;52 }53 public Page Page { get; }54 public Dictionary<string, object> State { get; } = new Dictionary<string, object>();55 public async Task SetStateAsync(string key, object value)56 {57 State[key] = value;58 await Page.EvaluateFunctionAsync("key => window[key] = state[key]", key);59 }60 public async Task<T> GetStateAsync<T>(string key)61 {

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StateManager

Using AI Code Generation

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1using PuppeteerSharp.States;2using PuppeteerSharp;3using System;4using System.Threading.Tasks;5{6 {7 static async Task Main(string[] args)8 {9 var options = new LaunchOptions { Headless = false };10 var stateManager = new StateManager();11 using (var browser = await Puppeteer.LaunchAsync(options))12 {13 var page = await browser.NewPageAsync();14 var state = await stateManager.CreateStateAsync(page);15 await state.RestoreAsync();16 }17 }18 }19}20using PuppeteerSharp.States;21using PuppeteerSharp;22using System;23using System.Threading.Tasks;24{25 {26 static async Task Main(string[] args)27 {28 var options = new LaunchOptions { Headless = false };29 var stateManager = new StateManager();30 using (var browser = await Puppeteer.LaunchAsync(options))31 {32 var page = await browser.NewPageAsync();33 var state = await stateManager.CreateStateAsync(page);34 await state.RestoreAsync();35 }36 }37 }38}39using PuppeteerSharp.States;40using PuppeteerSharp;41using System;42using System.Threading.Tasks;43{44 {45 static async Task Main(string[] args)46 {47 var options = new LaunchOptions { Headless = false };48 var stateManager = new StateManager();49 using (var browser = await Puppeteer.LaunchAsync(options))50 {51 var page = await browser.NewPageAsync();52 var state = await stateManager.CreateStateAsync(page);53 await state.RestoreAsync();54 }55 }56 }57}

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StateManager

Using AI Code Generation

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1using PuppeteerSharp.States;2using PuppeteerSharp;3using System.Threading.Tasks;4using System;5{6 {7 static async Task Main(string[] args)8 {9 {10 Args = new string[] { "--start-maximized" }11 };12 using (var browser = await Puppeteer.LaunchAsync(options))13 {14 var page = await browser.NewPageAsync();15 await page.ScreenshotAsync("Screenshot.png");16 }17 }18 }19}20Step 7: Now, we will add the code to use StateManager class of PuppeteerSharp.States package. We will add the code to use StateManager class of PuppeteerSharp.States package. using PuppeteerSharp.States;21using PuppeteerSharp;22using System.Threading.Tasks;23using System;24{25 {26 static async Task Main(string[] args)27 {28 {

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StateManager

Using AI Code Generation

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1using PuppeteerSharp;2using System.Threading.Tasks;3using System;4{5 {6 static async Task Main(string[] args)7 {8 {9 ExecutablePath = "C:/Program Files (x86)/Google/Chrome/Application/chrome.exe",10 };11 using (var browser = await Puppeteer.LaunchAsync(options))12 {13 var page = await browser.NewPageAsync();14 await page.ScreenshotAsync("google.png");15 }16 }17 }18}19using PuppeteerSharp;20using System.Threading.Tasks;21using System;22{23 {24 static async Task Main(string[] args)25 {26 {27 ExecutablePath = "C:/Program Files (x86)/Google/Chrome/Application/chrome.exe",28 };29 using (var browser = await Puppeteer.LaunchAsync(options))30 {31 var page = await browser.NewPageAsync();32 await page.ScreenshotAsync("google.png");33 }34 }35 }36}37using PuppeteerSharp;38using System.Threading.Tasks;39using System;40{41 {42 static async Task Main(string[] args)43 {44 {45 ExecutablePath = "C:/Program Files (x86)/Google/Chrome/Application/chrome.exe",46 };

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StateManager

Using AI Code Generation

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1using PuppeteerSharp;2using System;3{4 {5 static void Main(string[] args)6 {7 Console.WriteLine("PuppeteerSharp.States");8 Console.WriteLine("---------------------");9 StateManager stateManager = new StateManager();10 Console.WriteLine("StateManager: " + stateManager.ToString());11 Console.ReadKey();12 }13 }14}15using PuppeteerSharp;16using System;17{18 {19 static void Main(string[] args)20 {21 Console.WriteLine("PuppeteerSharp.States");22 Console.WriteLine("---------------------");23 StateManager stateManager = new StateManager();24 Console.WriteLine("StateManager: " + stateManager.ToString());25 Console.ReadKey();26 }27 }28}29using PuppeteerSharp;30using System;31{32 {33 static void Main(string[] args)34 {35 Console.WriteLine("PuppeteerSharp.States");36 Console.WriteLine("---------------------");37 StateManager stateManager = new StateManager();38 Console.WriteLine("StateManager: " + stateManager.ToString());39 Console.ReadKey();40 }41 }42}

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StateManager

Using AI Code Generation

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1using PuppeteerSharp.States;2using System.Threading.Tasks;3{4 {5 public static async Task<State> GetStateAsync(Page page)6 {7 var state = await page.EvaluateFunctionAsync<State>("() => { return { url: document.location.href, title: document.title, html: document.documentElement.innerHTML }; }");8 return state;9 }10 }11}12using PuppeteerSharp.States;13using System;14using System.Threading.Tasks;15{16 {17 public string Url { get; set; }18 public string Title { get; set; }19 public string Html { get; set; }20 public State()21 {22 Url = "";23 Title = "";24 Html = "";25 }26 public override string ToString()27 {28 return $"Url: {Url}, Title: {Title}, Html: {Html}";29 }30 }31}32using PuppeteerSharp.States;33using System;34using System.Threading.Tasks;35{36 {37 static async Task Main(string[] args)38 {39 {40 };41 using (var browser = await Puppeteer.LaunchAsync(options))42 {43 var page = await browser.NewPageAsync();44 var state = await StateManager.GetStateAsync(page);45 Console.WriteLine(state);46 }47 }48 }49}

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StateManager

Using AI Code Generation

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1var stateManager = new StateManager();2var state = new State();3stateManager.Add(state);4stateManager.SetCurrentState(state);5stateManager.SaveState();6var stateManager = new StateManager();7stateManager.LoadState();8var state = stateManager.GetCurrentState();9stateManager.SetCurrentState(state);10var stateManager = new StateManager();11stateManager.LoadState();12var state = stateManager.GetCurrentState();13stateManager.SetCurrentState(state);14stateManager.SaveState();15 Console.WriteLine("StateManager: " + stateManager.ToString());16 Console.ReadKey();17 }18 }19}20using PuppeteerSharp;21using System;22{23 {24 static void Main(string[] args)25 {26 Console.WriteLine("PuppeteerSharp.States");27 Console.WriteLine("---------------------");28 StateManager stateManager = new StateManager();29 Console.WriteLine("StateManager: " + stateManager.ToString());30 Console.ReadKey();31 }32 }33}34using PuppeteerSharp;35using System;36{37 {38 static void Main(string[] args)39 {40 Console.WriteLine("PuppeteerSharp.States");41 Console.WriteLine("---------------------");42 StateManager stateManager = new StateManager();43 Console.WriteLine("StateManager: " + stateManager.ToString());44 Console.ReadKey();45 }46 }47}

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StateManager

Using AI Code Generation

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1using PuppeteerSharp.States;2using System.Threading.Tasks;3{4 {5 public static async Task<State> GetStateAsync(Page page)6 {7 var state = await page.EvaluateFunctionAsync<State>("() => { return { url: document.location.href, title: document.title, html: document.documentElement.innerHTML }; }");8 return state;9 }10 }11}12using PuppeteerSharp.States;13using System;14using System.Threading.Tasks;15{16 {17 public string Url { get; set; }18 public string Title { get; set; }19 public string Html { get; set; }20 public State()21 {22 Url = "";23 Title = "";24 Html = "";25 }26 public override string ToString()27 {28 return $"Url: {Url}, Title: {Title}, Html: {Html}";29 }30 }31}32using PuppeteerSharp.States;33using System;34using System.Threading.Tasks;35{36 {37 static async Task Main(string[] args)38 {39 {40 };41 using (var browser = await Puppeteer.LaunchAsync(options))42 {43 var page = await browser.NewPageAsync();44 var state = await StateManager.GetStateAsync(page);45 Console.WriteLine(state);46 }47 }48 }49}

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StateManager

Using AI Code Generation

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1var stateManager = new StateManager();2var state = new State();3stateManager.Add(state);4stateManager.SetCurrentState(state);5stateManager.SaveState();6var stateManager = new StateManager();7stateManager.LoadState();8var state = stateManager.GetCurrentState();9stateManager.SetCurrentState(state);10var stateManager = new StateManager();11stateManager.LoadState();12var state = stateManager.GetCurrentState();13stateManager.SetCurrentState(state);14stateManager.SaveState();

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