From 73a3e331dc670c20ba24bac3010d798e96bee234 Mon Sep 17 00:00:00 2001
From: softworkz <softworkz@hotmail.com>
Date: Sun, 24 Sep 2023 16:36:49 +0200
Subject: [PATCH] Add  executeJavaScript method to WebContents

---
 src/ElectronNET.API/WebContents.cs      | 31 +++++++++++++++++++++++++
 src/ElectronNET.Host/api/webContents.js |  6 +++++
 src/ElectronNET.Host/api/webContents.ts |  5 ++++
 3 files changed, 42 insertions(+)

diff --git a/src/ElectronNET.API/WebContents.cs b/src/ElectronNET.API/WebContents.cs
index f77367c..187ba6e 100644
--- a/src/ElectronNET.API/WebContents.cs
+++ b/src/ElectronNET.API/WebContents.cs
@@ -244,6 +244,37 @@ public class WebContents
         return taskCompletionSource.Task;
     }
 
+    /// <summary>
+    /// Evaluates script code in page.
+    /// </summary>
+    /// <param name="code">The code to execute.</param>
+    /// <param name="userGesture">if set to <c>true</c> simulate a user gesture.</param>
+    /// <returns>The result of the executed code.</returns>
+    /// <remarks>
+    /// <para>
+    /// In the browser window some HTML APIs like `requestFullScreen` can only be
+    /// invoked by a gesture from the user. Setting `userGesture` to `true` will remove
+    /// this limitation.
+    /// </para>
+    /// <para>
+    /// Code execution will be suspended until web page stop loading.
+    /// </para>
+    /// </remarks>
+    public Task<object> ExecuteJavaScriptAsync(string code, bool userGesture = false)
+    {
+        var taskCompletionSource = new TaskCompletionSource<object>();
+
+        BridgeConnector.Socket.On("webContents-executeJavaScript-completed", (result) =>
+        {
+            BridgeConnector.Socket.Off("webContents-executeJavaScript-completed");
+            taskCompletionSource.SetResult(result);
+        });
+
+        BridgeConnector.Socket.Emit("webContents-executeJavaScript", Id, code, userGesture);
+
+        return taskCompletionSource.Task;
+    }
+
     /// <summary>
     /// Is used to get the Url of the loaded page.
     /// It's usefull if a web-server redirects you and you need to know where it redirects. For instance, It's useful in case of Implicit Authorization.
diff --git a/src/ElectronNET.Host/api/webContents.js b/src/ElectronNET.Host/api/webContents.js
index cef8980..777d985 100644
--- a/src/ElectronNET.Host/api/webContents.js
+++ b/src/ElectronNET.Host/api/webContents.js
@@ -65,6 +65,12 @@ module.exports = (socket) => {
             }
         });
     });
+
+    socket.on('webContents-executeJavaScript', async (id, code, userGesture = false) => {
+        const result = await getWindowById(id).webContents.executeJavaScript(code, userGesture);
+        electronSocket.emit('webContents-executeJavaScript-completed', result);
+    });
+    
     socket.on('webContents-getUrl', function (id) {
         const browserWindow = getWindowById(id);
         electronSocket.emit('webContents-getUrl' + id, browserWindow.webContents.getURL());
diff --git a/src/ElectronNET.Host/api/webContents.ts b/src/ElectronNET.Host/api/webContents.ts
index 3f4b7af..9e0d204 100644
--- a/src/ElectronNET.Host/api/webContents.ts
+++ b/src/ElectronNET.Host/api/webContents.ts
@@ -74,6 +74,11 @@ export = (socket: Socket) => {
     });
   });
 
+  socket.on('webContents-executeJavaScript', async (id, code, userGesture = false) => {
+    const result = await getWindowById(id).webContents.executeJavaScript(code, userGesture);
+    electronSocket.emit('webContents-executeJavaScript-completed', result);
+  });
+
   socket.on('webContents-getUrl', function (id) {
     const browserWindow = getWindowById(id);
     electronSocket.emit('webContents-getUrl' + id, browserWindow.webContents.getURL());