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package playwright
import (
"encoding/json"
"fmt"
)
type channel struct {
eventEmitter
guid string
connection *connection
owner *channelOwner // to avoid type conversion
object interface{} // retain type info (for fromChannel needed)
}
func (c *channel) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]string{
"guid": c.guid,
})
}
// for catch errors of route handlers etc.
func (c *channel) CreateTask(fn func()) {
go func() {
defer func() {
if e := recover(); e != nil {
err, ok := e.(error)
if ok {
c.connection.err.Set(err)
} else {
c.connection.err.Set(fmt.Errorf("%v", e))
}
}
}()
fn()
}()
}
func (c *channel) Send(method string, options ...interface{}) (interface{}, error) {
return c.connection.WrapAPICall(func() (interface{}, error) {
return c.innerSend(method, options...).GetResultValue()
}, c.owner.isInternalType)
}
func (c *channel) SendReturnAsDict(method string, options ...interface{}) (map[string]interface{}, error) {
ret, err := c.connection.WrapAPICall(func() (interface{}, error) {
return c.innerSend(method, options...).GetResult()
}, c.owner.isInternalType)
return ret.(map[string]interface{}), err
}
func (c *channel) innerSend(method string, options ...interface{}) *protocolCallback {
if err := c.connection.err.Get(); err != nil {
c.connection.err.Set(nil)
pc := newProtocolCallback(false, c.connection.abort)
pc.SetError(err)
return pc
}
params := transformOptions(options...)
return c.connection.sendMessageToServer(c.owner, method, params, false)
}
// SendNoReply ignores return value and errors
// almost equivalent to `send(...).catch(() => {})`
func (c *channel) SendNoReply(method string, options ...interface{}) {
c.innerSendNoReply(method, c.owner.isInternalType, options...)
}
func (c *channel) SendNoReplyInternal(method string, options ...interface{}) {
c.innerSendNoReply(method, true, options...)
}
func (c *channel) innerSendNoReply(method string, isInternal bool, options ...interface{}) {
params := transformOptions(options...)
_, err := c.connection.WrapAPICall(func() (interface{}, error) {
return c.connection.sendMessageToServer(c.owner, method, params, true).GetResult()
}, isInternal)
if err != nil {
// ignore error actively, log only for debug
logger.Error("SendNoReply failed", "error", err)
}
}
func newChannel(owner *channelOwner, object interface{}) *channel {
channel := &channel{
connection: owner.connection,
guid: owner.guid,
owner: owner,
object: object,
}
return channel
}
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