// manageExistingClients traverse the window tree and tries to manage all
// top-level clients. Clients that are not in the Unmapped state will be
// managed.
func manageExistingClients() {
tree, err := xproto.QueryTree(wm.X.Conn(), wm.Root.Id).Reply()
if err != nil {
logger.Warning.Printf("Could not issue QueryTree request: %s", err)
return
}
for _, potential := range tree.Children {
// Ignore our own dummy window...
if potential == wm.X.Dummy() {
continue
}
attrs, err := xproto.GetWindowAttributes(wm.X.Conn(), potential).Reply()
if err != nil {
continue
}
if attrs.MapState == xproto.MapStateUnmapped {
continue
}
logger.Message.Printf("Managing existing client %d", potential)
xclient.New(potential)
}
}
func rootInit(X *xgbutil.XUtil) {
var err error
// Listen to Root. It is all-important.
evMasks := xproto.EventMaskPropertyChange |
xproto.EventMaskFocusChange |
xproto.EventMaskButtonPress |
xproto.EventMaskButtonRelease |
xproto.EventMaskStructureNotify |
xproto.EventMaskSubstructureNotify |
xproto.EventMaskSubstructureRedirect
if wm.Config.FfmHead {
evMasks |= xproto.EventMaskPointerMotion
}
err = xwindow.New(X, X.RootWin()).Listen(evMasks)
if err != nil {
logger.Error.Fatalf("Could not listen to Root window events: %s", err)
}
// Update state when the root window changes size
wm.RootGeomChangeFun().Connect(X, wm.Root.Id)
// Oblige map request events
xevent.MapRequestFun(
func(X *xgbutil.XUtil, ev xevent.MapRequestEvent) {
xclient.New(ev.Window)
}).Connect(X, wm.Root.Id)
// Oblige configure requests from windows we don't manage.
xevent.ConfigureRequestFun(
func(X *xgbutil.XUtil, ev xevent.ConfigureRequestEvent) {
// Make sure we aren't managing this client.
if wm.FindManagedClient(ev.Window) != nil {
return
}
xwindow.New(X, ev.Window).Configure(int(ev.ValueMask),
int(ev.X), int(ev.Y), int(ev.Width), int(ev.Height),
ev.Sibling, ev.StackMode)
}).Connect(X, wm.Root.Id)
xevent.FocusInFun(
func(X *xgbutil.XUtil, ev xevent.FocusInEvent) {
if ignoreRootFocus(ev.Mode, ev.Detail) {
return
}
if len(wm.Workspace().Clients) == 0 {
return
}
wm.FocusFallback()
}).Connect(X, wm.Root.Id)
// Listen to Root client message events. This is how we handle all
// of the EWMH bullshit.
xevent.ClientMessageFun(handleClientMessages).Connect(X, wm.Root.Id)
// Check where the pointer is on motion events. If it's crossed a monitor
// boundary, switch the focus of the head.
if wm.Config.FfmHead {
xevent.MotionNotifyFun(handleMotionNotify).Connect(X, wm.Root.Id)
}
}