huadexuan
13d0c80335
chore(bridge): 删除桥接包的提交记录和Git属性配置 删除了 .codely-bridge-commit 文件中存储的提交哈希值 移除了 .gitattributes 文件中的行结束符配置规则 ```
195 lines
7.6 KiB
C#
195 lines
7.6 KiB
C#
#if UNITY_EDITOR_WIN
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using System;
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using System.IO;
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using System.Runtime.InteropServices;
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using UnityEngine;
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using static Cn.Tuanjie.Codely.Editor.NativeBrowserAPI;
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using UnityTcp.Editor.Helpers;
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namespace Cn.Tuanjie.Codely.Editor
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{
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/// <summary>
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/// WebView2 嵌入式浏览器宿主（Windows）。
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///
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/// 所有线程安全、STA 消息泵、WebView2 COM 生命周期均由 NativeBrowser.dll 内部处理，
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/// 本类只负责 P/Invoke 调用和委托 GC 保护。
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/// </summary>
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internal sealed class WebView2Host : IDisposable
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{
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IntPtr m_handle;
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// 委托实例必须持有强引用，否则 GC 回收后 native 调用函数指针会崩溃
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NavigationCallback m_onNav;
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LoadCompletedCallback m_onLoad;
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TitleChangedCallback m_onTitle;
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MessageCallback m_onMessage;
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DestroyedCallback m_onDestroyed;
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public event Action OnParentDestroyed;
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public event Action<string> OnTitleChanged;
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public event Action<string> OnWebMessageReceived;
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public event Action<bool> OnLoadCompleted;
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public event Action<string> OnNavigationStarting;
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public bool IsReady => m_handle != IntPtr.Zero;
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/// <summary>
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/// 原生 BrowserInstance 指针，用于序列化跨 Domain Reload 保活。
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/// </summary>
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public IntPtr Handle => m_handle;
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// ── Domain Reload 恢复 ───────────────────────────────────────────────
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/// <summary>
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/// 从序列化的原生句柄恢复，复用已存活的 BrowserInstance。
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/// 替换旧的（已失效的）托管回调指针为新委托，使 WebView2 继续正常工作。
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/// </summary>
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/// <returns>恢复成功返回 true；handle 无效或已被销毁返回 false。</returns>
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public bool RestoreFromHandle(IntPtr handle)
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{
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if (handle == IntPtr.Zero) return false;
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if (!NB_IsHandleValid(handle)) return false;
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m_handle = handle;
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// 重新构造委托实例（旧域的委托已失效，必须在新域中重新创建）
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m_onNav = (url, _) => OnNavigationStarting?.Invoke(url);
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m_onLoad = (ok, _) => OnLoadCompleted?.Invoke(ok);
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m_onTitle = (t, _) => OnTitleChanged?.Invoke(t);
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m_onMessage = (json, _) => OnWebMessageReceived?.Invoke(json);
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m_onDestroyed = (_) => OnParentDestroyed?.Invoke();
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var cb = new Callbacks
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{
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onNavigationStarting = m_onNav,
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onLoadCompleted = m_onLoad,
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onTitleChanged = m_onTitle,
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onWebMessageReceived = m_onMessage,
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onParentDestroyed = m_onDestroyed,
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ctx = IntPtr.Zero,
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};
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NB_SetCallbacks(handle, ref cb);
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return true;
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}
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// ── 初始化（同步返回，WebView2 在 native STA 线程异步初始化）──────────
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public void Init(IntPtr parentHwnd, string initialUrl = "about:blank")
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{
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if (!NB_IsRuntimeAvailable())
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throw new InvalidOperationException(
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"[WebView2Host] WebView2 Runtime not installed. " +
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"Please install Microsoft Edge or WebView2 Evergreen Runtime.");
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string version = Marshal.PtrToStringUni(NB_GetRuntimeVersion());
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CodelyLogger.Log($"[WebView2Host] Runtime version: {version}");
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string dataFolder = Path.Combine(
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Application.temporaryCachePath,
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"WebView2_" + parentHwnd.ToInt64().ToString("X"))
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.Replace('/', '\\');
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// 构造回调结构，成员委托持有到 Dispose
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m_onNav = (url, _) => OnNavigationStarting?.Invoke(url);
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m_onLoad = (ok, _) => OnLoadCompleted?.Invoke(ok);
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m_onTitle = (t, _) => OnTitleChanged?.Invoke(t);
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m_onMessage = (json, _) => OnWebMessageReceived?.Invoke(json);
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m_onDestroyed = (_) => OnParentDestroyed?.Invoke();
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var cb = new Callbacks
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{
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onNavigationStarting = m_onNav,
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onLoadCompleted = m_onLoad,
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onTitleChanged = m_onTitle,
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onWebMessageReceived = m_onMessage,
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onParentDestroyed = m_onDestroyed,
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ctx = IntPtr.Zero,
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};
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m_handle = NB_Create(parentHwnd, dataFolder, initialUrl, ref cb);
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if (m_handle == IntPtr.Zero)
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throw new Exception("[WebView2Host] NB_Create failed (check native logs)");
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CodelyLogger.Log($"[WebView2Host] Created, handle=0x{m_handle:X}, url={initialUrl}");
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}
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// ── 公开 API（线程安全，native 内部转发到 STA 线程）──────────────────
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public void Navigate(string url)
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{
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if (IsReady && !string.IsNullOrEmpty(url))
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NB_Navigate(m_handle, url);
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}
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public void GoBack() { if (IsReady) NB_GoBack(m_handle); }
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public void GoForward() { if (IsReady) NB_GoForward(m_handle); }
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public void Reload() { if (IsReady) NB_Reload(m_handle); }
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public void ExecuteScript(string js)
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{
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if (IsReady && !string.IsNullOrEmpty(js))
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NB_ExecuteScript(m_handle, js);
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}
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public void PostWebMessage(string json)
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{
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if (IsReady && !string.IsNullOrEmpty(json))
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NB_PostWebMessage(m_handle, json);
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}
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public void SetTopInset(int topPx)
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{
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if (IsReady) NB_SetTopInset(m_handle, topPx);
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}
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/// <summary>
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/// Set WebView bounds in parent client coordinates (pixels).
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/// Use this to match the exact content area from Unity layout (embedRect).
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/// </summary>
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public void Resize(int x, int y, int w, int h)
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{
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if (IsReady && w > 0 && h > 0) NB_Resize(m_handle, x, y, w, h);
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}
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public void SetVisible(bool visible)
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{
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if (IsReady) NB_SetVisible(m_handle, visible);
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}
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public void ShowDevTools()
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{
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if (IsReady) NB_OpenDevTools(m_handle);
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}
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/// <summary>
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/// 将键盘焦点移入 WebView2 内容。嵌入 Unity GUIView 后，导航完成时父窗口仍持有
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/// Win32 焦点，HTML 的 autofocus / element.focus() 不会显示光标也收不到键盘输入；
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/// 调用本方法把焦点交给内容（等价于浏览器中窗口被激活时内容自动获得焦点）。
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/// </summary>
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public void MoveFocus()
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{
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if (IsReady) NB_MoveFocus(m_handle);
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}
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// ── 清理 ──────────────────────────────────────────────────────────────
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public void Dispose()
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{
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if (m_handle != IntPtr.Zero)
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{
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NB_Destroy(m_handle);
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m_handle = IntPtr.Zero;
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}
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// 清空委托引用，让 GC 可以回收（各类型不同，不能链式赋值）
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m_onNav = null;
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m_onLoad = null;
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m_onTitle = null;
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m_onMessage = null;
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m_onDestroyed = null;
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}
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}
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}
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#endif
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