// RunJavaScript runs script asynchronously in the context of the current page
// in the WebView. Upon completion, resultCallback will be called with the
// result of evaluating the script, or with an error encountered during
// execution. To get the stack trace and other error logs, use the
// ::console-message signal.
//
// See also: webkit_web_view_run_javascript at
// http://webkitgtk.org/reference/webkit2gtk/stable/WebKitWebView.html#webkit-web-view-run-javascript
func (v *WebView) RunJavaScript(script string, resultCallback func(result *gojs.Value, err error)) {
var cCallback C.GAsyncReadyCallback
var userData C.gpointer
var err error
if resultCallback != nil {
callback := func(result *C.GAsyncResult) {
var jserr *C.GError
jsResult := C.webkit_web_view_run_javascript_finish(v.webView, result, &jserr)
if jsResult == nil {
defer C.g_error_free(jserr)
msg := C.GoString((*C.char)(jserr.message))
resultCallback(nil, errors.New(msg))
return
}
ctxRaw := gojs.RawContext(C.webkit_javascript_result_get_global_context(jsResult))
jsValRaw := gojs.RawValue(C.webkit_javascript_result_get_value(jsResult))
ctx := gojs.NewContextFrom(ctxRaw)
jsVal := ctx.NewValueFrom(jsValRaw)
resultCallback(jsVal, nil)
}
cCallback, userData, err = newGAsyncReadyCallback(callback)
if err != nil {
panic(err)
}
}
C.webkit_web_view_run_javascript(v.webView, (*C.gchar)(C.CString(script)), nil, cCallback, userData)
}
// JavaScriptGlobalContext returns the global JavaScript context used by
// WebView.
//
// See also: webkit_web_view_get_javascript_global_context at
// http://webkitgtk.org/reference/webkit2gtk/stable/WebKitWebView.html#webkit-web-view-get-javascript-global-context
func (v *WebView) JavaScriptGlobalContext() *gojs.Context {
return gojs.NewContextFrom(gojs.RawContext(C.webkit_web_view_get_javascript_global_context(v.webView)))
}