First Commit

widget.go

@@ -0,0 +1,80 @@
+/*
+Copyright © Brian Buller <brian@bullercodeworks.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+package widgets
+
+import "github.com/gdamore/tcell"
+
+type Widget interface {
+	Init(id string)
+	Id() string
+	HandleResize(*tcell.EventResize)
+	HandleKey(*tcell.EventKey) bool
+	HandleTime(*tcell.EventTime)
+	Draw(tcell.Screen)
+	Active() bool
+	SetActive(bool)
+	Visible() bool
+	SetVisible(bool)
+	Focusable() bool
+	SetX(int)
+	SetY(int)
+	GetX() int
+	GetY() int
+	SetPos(Coord)
+	SetW(int)
+	SetH(int)
+	GetW() int
+	GetH() int
+	WantW() int
+	WantH() int
+	SetSize(Coord)
+}
+
+type Coord struct {
+	X, Y int
+}
+
+func (p *Coord) Add(o Coord) Coord {
+	return Coord{
+		X: p.X + o.X,
+		Y: p.Y + o.Y,
+	}
+}
+
+// To validate that a struct satisfies this interface, you can do:
+// var _ Widget - (*<struct>)(nil)
+// where <struct> is the actual struct that you're validating.
+
+type WidgetList []Widget
+
+func (w *WidgetList) Contains(id string) bool {
+	return w.Find(id) != nil
+}
+
+func (w *WidgetList) Find(id string) Widget {
+	for _, wi := range *w {
+		if wi.Id() == id {
+			return wi
+		}
+	}
+	return nil
+}