'初始化'

admin

2020-06-10 a610f2ab6e543d2cb78c1ef212ac6a74ddc067d9

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
// Copyright © 2019 The CefSharp Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
 
#pragma once
 
#include "include/cef_v8.h"
#include "..\CefSharp.Core\Internals\Messaging\Messages.h"
#include "..\CefSharp.Core\Internals\Serialization\Primitives.h"
#include "Serialization\V8Serialization.h"
 
using namespace System;
using namespace CefSharp::Internals::Messaging;
using namespace CefSharp::Internals::Serialization;
 
namespace CefSharp
{
    const CefString kPostMessage = CefString("PostMessage");
    const CefString kPostMessageCamelCase = CefString("postMessage");
 
    private class JavascriptPostMessageHandler : public CefV8Handler
    {
    private:
        gcroot<JavascriptCallbackRegistry^> _javascriptCallbackRegistry;
 
    public:
        JavascriptPostMessageHandler(JavascriptCallbackRegistry^ javascriptCallbackRegistry)
        {
            _javascriptCallbackRegistry = javascriptCallbackRegistry;
        }
 
        bool Execute(const CefString& name, CefRefPtr<CefV8Value> object, const CefV8ValueList& arguments, CefRefPtr<CefV8Value>& retval, CefString& exception) OVERRIDE
        {
            if (arguments.size() == 0 || arguments.size() > 1)
            {
                //TODO: Improve error message
                exception = "Only a single param is accepted";
 
                return true;
            }
 
            auto context = CefV8Context::GetCurrentContext();
            if (context.get())
            {
                auto frame = context->GetFrame();
 
                if (frame.get() && frame->IsValid() && context->Enter())
                {
                    try
                    {
                        auto global = context->GetGlobal();
 
                        auto request = CefProcessMessage::Create(kJavascriptMessageReceived);
                        auto argList = request->GetArgumentList();
 
                        auto params = CefListValue::Create();
                        SerializeV8Object(arguments[0], params, 0, _javascriptCallbackRegistry);
 
                        //We're only interested in the first param
                        if (params->GetSize() > 0)
                        {
                            argList->SetValue(0, params->GetValue(0));
                        }
 
                        frame->SendProcessMessage(CefProcessId::PID_BROWSER, request);
 
                        retval = CefV8Value::CreateNull();
                    }
                    finally
                    {
                        context->Exit();
                    }
                }
                else
                {
                    exception = "Unable to Enter Context";
                }
            }
            else
            {
                exception = "Unable to get current context";
            }
 
 
            return true;
        }
 
        IMPLEMENT_REFCOUNTING(JavascriptPostMessageHandler);
    };
}