diff options
Diffstat (limited to 'Godeps/_workspace/src/github.com/gizak/termui/widget.go')
-rw-r--r-- | Godeps/_workspace/src/github.com/gizak/termui/widget.go | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/Godeps/_workspace/src/github.com/gizak/termui/widget.go b/Godeps/_workspace/src/github.com/gizak/termui/widget.go new file mode 100644 index 000000000..35cf143a3 --- /dev/null +++ b/Godeps/_workspace/src/github.com/gizak/termui/widget.go @@ -0,0 +1,94 @@ +// Copyright 2016 Zack Guo <gizak@icloud.com>. All rights reserved. +// Use of this source code is governed by a MIT license that can +// be found in the LICENSE file. + +package termui + +import ( + "fmt" + "sync" +) + +// event mixins +type WgtMgr map[string]WgtInfo + +type WgtInfo struct { + Handlers map[string]func(Event) + WgtRef Widget + Id string +} + +type Widget interface { + Id() string +} + +func NewWgtInfo(wgt Widget) WgtInfo { + return WgtInfo{ + Handlers: make(map[string]func(Event)), + WgtRef: wgt, + Id: wgt.Id(), + } +} + +func NewWgtMgr() WgtMgr { + wm := WgtMgr(make(map[string]WgtInfo)) + return wm + +} + +func (wm WgtMgr) AddWgt(wgt Widget) { + wm[wgt.Id()] = NewWgtInfo(wgt) +} + +func (wm WgtMgr) RmWgt(wgt Widget) { + wm.RmWgtById(wgt.Id()) +} + +func (wm WgtMgr) RmWgtById(id string) { + delete(wm, id) +} + +func (wm WgtMgr) AddWgtHandler(id, path string, h func(Event)) { + if w, ok := wm[id]; ok { + w.Handlers[path] = h + } +} + +func (wm WgtMgr) RmWgtHandler(id, path string) { + if w, ok := wm[id]; ok { + delete(w.Handlers, path) + } +} + +var counter struct { + sync.RWMutex + count int +} + +func GenId() string { + counter.Lock() + defer counter.Unlock() + + counter.count += 1 + return fmt.Sprintf("%d", counter.count) +} + +func (wm WgtMgr) WgtHandlersHook() func(Event) { + return func(e Event) { + for _, v := range wm { + if k := findMatch(v.Handlers, e.Path); k != "" { + v.Handlers[k](e) + } + } + } +} + +var DefaultWgtMgr WgtMgr + +func (b *Block) Handle(path string, handler func(Event)) { + if _, ok := DefaultWgtMgr[b.Id()]; !ok { + DefaultWgtMgr.AddWgt(b) + } + + DefaultWgtMgr.AddWgtHandler(b.Id(), path, handler) +} |