/// <summary>
/// Execute the function using the specified V8 context. |object| is the
/// receiver ('this' object) of the function. If |object| is empty the
/// specified context's global object will be used. |arguments| is the list of
/// arguments that will be passed to the function. Returns the function return
/// value on success. Returns NULL if this method is called incorrectly or an
/// exception is thrown.
/// </summary>
public CefV8Value ExecuteFunctionWithContext(CefV8Context context, CefV8Value obj, CefV8Value[] arguments)
{
var n_arguments = CreateArguments(arguments);
cef_v8value_t *n_retval;
fixed(cef_v8value_t **n_arguments_ptr = n_arguments)
{
n_retval = cef_v8value_t.execute_function_with_context(
_self,
context.ToNative(),
obj != null ? obj.ToNative() : null,
n_arguments != null ? (UIntPtr)n_arguments.Length : UIntPtr.Zero,
n_arguments_ptr
);
}
return(CefV8Value.FromNativeOrNull(n_retval));
}
/// <summary>
/// Execute the function using the specified V8 context. |object| is the
/// receiver ('this' object) of the function. If |object| is empty the
/// specified context's global object will be used. |arguments| is the list of
/// arguments that will be passed to the function. Returns the function return
/// value on success. Returns NULL if this method is called incorrectly or an
/// exception is thrown.
/// </summary>
public CefV8Value ExecuteFunctionWithContext(CefV8Context context, CefV8Value obj, CefV8Value[] arguments)
{
var n_arguments = CreateArguments(arguments);
cef_v8value_t* n_retval;
fixed (cef_v8value_t** n_arguments_ptr = n_arguments)
{
n_retval = cef_v8value_t.execute_function_with_context(
_self,
context.ToNative(),
obj != null ? obj.ToNative() : null,
n_arguments != null ? (UIntPtr)n_arguments.Length : UIntPtr.Zero,
n_arguments_ptr
);
}
return CefV8Value.FromNativeOrNull(n_retval);
}
protected override void OnContextCreated(CefBrowser browser, CefFrame frame, CefV8Context context)
{
/*缓存数据库*/
string extensionCode =
"var cachedb;" +
"if(!cachedb)" +
" cachedb={};" +
"(function() {" +
" cachedb.Connect = function(dbName) {" +
" native function Connect(dbName);" +
" return Connect(dbName);" +
" };" +
" cachedb.Execute = function(commandText) {" +
" native function Execute(commandText);" +
" return Execute(commandText);" +
" };" +
" cachedb.Query = function(commandText) {" +
" native function Query(commandText);" +
" return Query(commandText);" +
" };" +
" cachedb.Close = function() {" +
" native function Close();" +
" return Close();" +
" };"+
"})();";
CefV8Handler ExtendsionHandler = new CwbJsExtendHandler(browser);
CefRuntime.RegisterExtension("v8/cachedb", extensionCode, ExtendsionHandler);
/*屏幕分辨率设置*/
int w = webBrowser.screenWidth;
int h = webBrowser.screenHeight;
if (w > 0 && h > 0)
{
string jscode =
"Object.defineProperty(window.screen, 'height', {" +
" get: function() {"+
" return "+h+";"+
" }"+
"});"+
"Object.defineProperty(window.screen, 'width', {"+
" get: function() {"+
" return "+w+";"+
" }"+
"});";
frame.ExecuteJavaScript(jscode,frame.Url,0);
}
/*注册执行C#方法*/
CefV8Value globalValue = context.GetGlobal();
CefV8Handler callHandler = new CwbJsExtendHandler(browser);
CefV8Value callMethod = CefV8Value.CreateFunction("CallCSharpMethod", callHandler);
globalValue.SetValue("CallCSharpMethod", callMethod, CefV8PropertyAttribute.None);
base.OnContextCreated(browser, frame, context);
}
/// <summary>
/// Called immediately before the V8 context for a frame is released. No
/// references to the context should be kept after this method is called.
/// </summary>
protected virtual void OnContextReleased(CefBrowser browser, CefFrame frame, CefV8Context context)
{
}
/// <summary>
/// Called for global uncaught exceptions in a frame. Execution of this
/// callback is disabled by default. To enable set
/// CefSettings.uncaught_exception_stack_size > 0.
/// </summary>
protected virtual void OnUncaughtException(CefBrowser browser, CefFrame frame, CefV8Context context, CefV8Exception exception, CefV8StackTrace stackTrace)
{
}
/// <summary>
/// Returns the entered (bottom) context object in the V8 context stack.
/// </summary>
public static CefV8Context GetEnteredContext()
{
return(CefV8Context.FromNative(
cef_v8context_t.get_entered_context()
));
}
/// <summary>
/// Returns the current (top) context object in the V8 context stack.
/// </summary>
public static CefV8Context GetCurrentContext()
{
return(CefV8Context.FromNative(
cef_v8context_t.get_current_context()
));
}
/// <summary>
/// Returns true if this object is pointing to the same handle as |that|
/// object.
/// </summary>
public bool IsSame(CefV8Context that)
{
if (that == null) return false;
return cef_v8context_t.is_same(_self, that.ToNative()) != 0;
}
/// <summary>
/// Called for global uncaught exceptions in a frame. Execution of this
/// callback is disabled by default. To enable set
/// CefSettings.uncaught_exception_stack_size > 0.
/// </summary>
protected virtual void OnUncaughtException(CefBrowser browser, CefFrame frame, CefV8Context context, CefV8Exception exception, CefV8StackTrace stackTrace)
{
}
/// <summary>
/// Called immediately before the V8 context for a frame is released. No
/// references to the context should be kept after this method is called.
/// </summary>
protected virtual void OnContextReleased(CefBrowser browser, CefFrame frame, CefV8Context context)
{
}
