diff options
Diffstat (limited to 'dialog.go')
| -rw-r--r-- | dialog.go | 50 |
1 files changed, 40 insertions, 10 deletions
@@ -2,9 +2,40 @@ package ui +// Dialog is an interface adopted by all dialogs. +type Dialog struct { + Response() Response // response code from the dialog + Selection() interface{} // currently nil +} + +// Response denotes a response from the user to a Dialog. +type Response uint +const ( + NotDone Response = iota + OK +) + +// basic return +type dialogret struct { + res Response + sel interface{} +} +func (d *dialogret) Response() Response { return d.res } +func (d *dialogret) Selection() interface{} { return d.sel } + // sentinel (not nil so programmer errors don't go undetected) // this window is invalid and cannot be used directly -var dialogWindow = new(Window) +// notice the support it uses +var dialogWindow = &Window{ + sysData: &sysData{ + winhandler: dh, + } +} +type dhandler chan *dialogret +func (d dhandler) Event(e Event, dat interface{}) { + d <- dat.(*dialogret) +} +var dh = make(dhandler) // MsgBox displays an informational message box to the user with just an OK button. // primaryText should be a short string describing the message, and will be displayed with additional emphasis on platforms that support it. @@ -13,13 +44,14 @@ var dialogWindow = new(Window) // On platforms that allow for the message box window to have a title, os.Args[0] is used. // // See "On Dialogs" in the package overview for behavioral information. -func MsgBox(primaryText string, secondaryText string) { - <-dialogWindow.msgBox(primaryText, secondaryText) +func MsgBox(primaryText string, secondaryText string) Response { + dialogWindow.msgBox(primaryText, secondaryText) + return (<-dh).res } // MsgBox is the Window method version of the package-scope function MsgBox. // See that function's documentation and "On Dialogs" in the package overview for more information. -func (w *Window) MsgBox(primaryText string, secondaryText string) (done chan struct{}) { +func (w *Window) MsgBox(primaryText string, secondaryText string) Dialog { if !w.created { panic("parent window passed to Window.MsgBox() before it was created") } @@ -30,15 +62,13 @@ func (w *Window) MsgBox(primaryText string, secondaryText string) (done chan str // Otherwise, it behaves like MsgBox. // // See "On Dialogs" in the package overview for more information. -func MsgBoxError(primaryText string, secondaryText string) { - <-dialogWindow.msgBoxError(primaryText, secondaryText) +func MsgBoxError(primaryText string, secondaryText string) Dialog { + dialogWindow.msgBoxError(primaryText, secondaryText) + return (<-dh).res } // MsgBoxError is the Window method version of the package-scope function MsgBoxError. // See that function's documentation and "On Dialogs" in the package overview for more information. -func (w *Window) MsgBoxError(primaryText string, secondaryText string) (done chan struct{}) { - if !w.created { - panic("parent window passed to MsgBoxError() before it was created") - } +func (w *Window) MsgBoxError(primaryText string, secondaryText string) Dialog { return w.msgBoxError(primaryText, secondaryText) } |