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using ElectronNET.API.Entities;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Newtonsoft.Json.Serialization;
using System;
using System.Threading.Tasks;
namespace ElectronNET.API
{
/// <summary>
/// Render and control web pages.
/// </summary>
public class WebContents
{
/// <summary>
/// Gets the identifier.
/// </summary>
/// <value>
/// The identifier.
/// </value>
public int Id { get; private set; }
/// <summary>
/// Emitted when the renderer process crashes or is killed.
/// </summary>
public event Action<bool> OnCrashed
{
add
{
if (_crashed == null)
{
BridgeConnector.Socket.On("webContents-crashed" + Id, (killed) =>
{
_crashed((bool)killed);
});
BridgeConnector.Socket.Emit("register-webContents-crashed", Id);
}
_crashed += value;
}
remove
{
_crashed -= value;
if (_crashed == null)
BridgeConnector.Socket.Off("webContents-crashed" + Id);
}
}
private event Action<bool> _crashed;
/// <summary>
/// Emitted when the navigation is done, i.e. the spinner of the tab has
/// stopped spinning, and the onload event was dispatched.
/// </summary>
public event Action OnDidFinishLoad
{
add
{
if (_didFinishLoad == null)
{
BridgeConnector.Socket.On("webContents-didFinishLoad" + Id, () =>
{
_didFinishLoad();
});
BridgeConnector.Socket.Emit("register-webContents-didFinishLoad", Id);
}
_didFinishLoad += value;
}
remove
{
_didFinishLoad -= value;
if (_didFinishLoad == null)
BridgeConnector.Socket.Off("webContents-didFinishLoad" + Id);
}
}
private event Action _didFinishLoad;
internal WebContents(int id)
{
Id = id;
}
/// <summary>
/// Opens the devtools.
/// </summary>
public void OpenDevTools()
{
BridgeConnector.Socket.Emit("webContentsOpenDevTools", Id);
}
/// <summary>
/// Opens the devtools.
/// </summary>
/// <param name="openDevToolsOptions"></param>
public void OpenDevTools(OpenDevToolsOptions openDevToolsOptions)
{
BridgeConnector.Socket.Emit("webContentsOpenDevTools", Id, JObject.FromObject(openDevToolsOptions, _jsonSerializer));
}
/// <summary>
/// Prints window's web page as PDF with Chromium's preview printing custom
/// settings.The landscape will be ignored if @page CSS at-rule is used in the web page.
/// By default, an empty options will be regarded as: Use page-break-before: always;
/// CSS style to force to print to a new page.
/// </summary>
/// <param name="path"></param>
/// <param name="options"></param>
/// <returns>success</returns>
public Task<bool> PrintToPDFAsync(string path, PrintToPDFOptions options = null)
{
var taskCompletionSource = new TaskCompletionSource<bool>();
BridgeConnector.Socket.On("webContents-printToPDF-completed", (success) =>
{
BridgeConnector.Socket.Off("webContents-printToPDF-completed");
taskCompletionSource.SetResult((bool)success);
});
if(options == null)
{
BridgeConnector.Socket.Emit("webContents-printToPDF", Id, "", path);
}
else
{
BridgeConnector.Socket.Emit("webContents-printToPDF", Id, JObject.FromObject(options, _jsonSerializer), path);
}
return taskCompletionSource.Task;
}
private JsonSerializer _jsonSerializer = new JsonSerializer()
{
ContractResolver = new CamelCasePropertyNamesContractResolver(),
NullValueHandling = NullValueHandling.Ignore,
DefaultValueHandling = DefaultValueHandling.Ignore
};
}
}