awebview.gui.methodhandler source code

1 module awebview.gui.methodhandler;
2 
3 import awebview.wrapper.jsobject,
4        awebview.wrapper.weakref;
5 
6 
7 struct JSMethodTag { wstring name; }
8 
9 
10 class MethodHandler : JSMethodHandler
11 {
12     void set(JSObj)(JSObj obj)
13     {
14         foreach(name; __traits(allMembers, JSObj)){
15             static if(is(typeof(mixin(`&obj.` ~ name)) == delegate))
16                 foreach(attr; __traits(getAttributes, mixin(`JSObj.` ~ name)))
17                     static if(is(typeof(attr) : JSMethodTag))
18                         set(obj.jsobject.get, attr.name, mixin(`&obj.` ~ name));
19         }
20     }
21 
22 
23     void set(ref JSObject obj, wstring name, Dlg dg)
24     {
25         WebString str = name;
26 
27         if(!obj.hasMethod(str))
28             obj.setCustomMethod(str, false);
29 
30         assert(obj.hasMethod(str));
31         _table[obj.remoteId][name] = dg;
32     }
33 
34 
35     void set(ref JSObject obj, wstring name, DlgRV dg)
36     {
37         WebString str = name;
38 
39         if(!obj.hasMethod(str))
40             obj.setCustomMethod(str, true);
41 
42         assert(obj.hasMethod(str));
43         _tableRV[obj.remoteId][name] = dg;
44     }
45 
46 
47     void release(JSObj)(JSObj obj)
48     {
49         release(obj.jsobject.remoteId);
50     }
51 
52 
53     void release(uint objRemoteId)
54     {
55         _table.remove(objRemoteId);
56         _tableRV.remove(objRemoteId);
57     }
58 
59 
60     override
61     void onCall(awebview.wrapper.cpp.WebView view,
62                 uint objId, WeakRef!(const(WebStringCpp)) methodName,
63                 WeakRef!(const(JSArrayCpp)) args)
64     {
65         if(auto p = objId in _table)
66             if(auto q = methodName.data in *p)
67                 (*q)(args);
68     }
69 
70 
71     override
72     JSValue onCallWithRV(
73         awebview.wrapper.cpp.WebView view,
74         uint objId, WeakRef!(const(WebStringCpp)) methodName,
75         WeakRef!(const(JSArrayCpp)) args)
76     {
77         if(auto p = objId in _tableRV)
78             if(auto q = methodName.data in *p)
79                 return (*q)(args);
80 
81         JSValue v = JSValue(JSValue.null_);
82         return v;
83     }
84 
85 
86   private:
87     alias Dlg = void delegate(WeakRef!(const(JSArrayCpp)));
88     alias DlgRV = JSValue delegate(WeakRef!(const(JSArrayCpp)));
89 
90     Dlg[wstring][uint] _table;
91     DlgRV[wstring][uint] _tableRV;
92 }