func newReaderFromJSObject(in *js.Object) (readerAt, error) {
if jsbuiltin.InstanceOf(in, js.Global.Get("ArrayBuffer")) {
return &byteSliceReader{Buf: arrayBufferToByteSlice(in)}, nil
}
if jsbuiltin.InstanceOf(in, js.Global.Get("Blob")) {
return newBlobReader(in), nil
}
return nil, errors.New("unsupported input type: " + jsbuiltin.TypeOf(in))
}
// New loads the pouchdb-find plugin (if not already loaded) and returns
// a plugin instance.
func New(db *pouchdb.PouchDB) *PouchPluginFind {
fnType := jsbuiltin.TypeOf(db.GetJS("createIndex"))
if fnType == "undefined" {
// Load the JS plugin
plugin := js.Global.Call("require", "pouchdb-find")
pouchdb.Plugin(plugin)
} else if fnType != "function" {
panic("Cannot load pouchdb-find plugin; .createIndex method already exists as a non-function")
}
return &PouchPluginFind{db}
}
func BaseURI() string {
doc := js.Global.Get("document")
if jsbuiltin.TypeOf(doc) == "undefined" {
// Likely running from node.js, as during testing
return ""
}
rawUri := js.Global.Get("jQuery").Get("mobile").Get("path").Call("getDocumentBase").String()
uri, _ := url.Parse(rawUri)
uri.Fragment = ""
uri.RawQuery = ""
return uri.String()
}
func sendResponse(req *Message, data *string) error {
iframe := js.Global.Get("document").Call("getElementById", req.IframeId)
if jsbuiltin.TypeOf(iframe) == "undefined" {
return fmt.Errorf("Cannot find requested iframe")
}
iframe.Get("contentWindow").Call("postMessage", Response{
Tag: req.Tag,
Path: req.Path,
Data: *data,
}, "*")
return nil
}
// FindLink returns a header link element matching the requested rel tag, if present.
func FindLink(rel string) string {
doc := js.Global.Get("document")
if jsbuiltin.TypeOf(doc) == "undefined" {
// Likely running from node.js, as during testing
return ""
}
links := doc.Call("getElementsByTagName", "head").Index(0).Call("getElementsByTagName", "link")
for i := 0; i < links.Length(); i++ {
link := links.Index(i)
if link.Get("rel").String() == rel {
return link.Get("href").String()
}
}
return ""
}