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authorDrew DeVault <sir@cmpwn.com>2018-02-26 22:54:39 -0500
committerDrew DeVault <sir@cmpwn.com>2018-02-26 22:54:39 -0500
commit1418e1b9dc41d8f69bccb8de0fe0f1fb6835ce11 (patch)
tree4ae8b3373fdadb6dd3e7b8c8789cf938522b8f8a /lib/ui/tab.go
parent661e3ec2a4dd97d4a8a8eab4f281b088770a6af2 (diff)
downloadaerc-1418e1b9dc41d8f69bccb8de0fe0f1fb6835ce11.tar.gz
Split UI library and widgets
Diffstat (limited to 'lib/ui/tab.go')
-rw-r--r--lib/ui/tab.go115
1 files changed, 115 insertions, 0 deletions
diff --git a/lib/ui/tab.go b/lib/ui/tab.go
new file mode 100644
index 00000000..e6a8aa5f
--- /dev/null
+++ b/lib/ui/tab.go
@@ -0,0 +1,115 @@
+package ui
+
+import (
+ tb "github.com/nsf/termbox-go"
+)
+
+type Tabs struct {
+ Tabs []*Tab
+ TabStrip *TabStrip
+ TabContent *TabContent
+ Selected int
+
+ onInvalidateStrip func(d Drawable)
+ onInvalidateContent func(d Drawable)
+}
+
+type Tab struct {
+ Content Drawable
+ Name string
+ invalid bool
+}
+
+type TabStrip Tabs
+type TabContent Tabs
+
+func NewTabs() *Tabs {
+ tabs := &Tabs{}
+ tabs.TabStrip = (*TabStrip)(tabs)
+ tabs.TabContent = (*TabContent)(tabs)
+ return tabs
+}
+
+func (tabs *Tabs) Add(content Drawable, name string) {
+ tabs.Tabs = append(tabs.Tabs, &Tab{
+ Content: content,
+ Name: name,
+ })
+ tabs.TabStrip.Invalidate()
+ content.OnInvalidate(tabs.invalidateChild)
+}
+
+func (tabs *Tabs) invalidateChild(d Drawable) {
+ for i, tab := range tabs.Tabs {
+ if tab.Content == d {
+ if i == tabs.Selected {
+ tabs.TabContent.Invalidate()
+ }
+ return
+ }
+ }
+}
+
+func (tabs *Tabs) Remove(content Drawable) {
+ for i, tab := range tabs.Tabs {
+ if tab.Content == content {
+ tabs.Tabs = append(tabs.Tabs[:i], tabs.Tabs[i+1:]...)
+ break
+ }
+ }
+ tabs.TabStrip.Invalidate()
+}
+
+func (tabs *Tabs) Select(index int) {
+ if tabs.Selected != index {
+ tabs.Selected = index
+ tabs.TabStrip.Invalidate()
+ tabs.TabContent.Invalidate()
+ }
+}
+
+// TODO: Color repository
+func (strip *TabStrip) Draw(ctx *Context) {
+ x := 0
+ for i, tab := range strip.Tabs {
+ cell := tb.Cell{
+ Fg: tb.ColorBlack,
+ Bg: tb.ColorWhite,
+ }
+ if strip.Selected == i {
+ cell.Fg = tb.ColorDefault
+ cell.Bg = tb.ColorDefault
+ }
+ x += ctx.Printf(x, 0, cell, " %s ", tab.Name)
+ }
+ cell := tb.Cell{
+ Fg: tb.ColorBlack,
+ Bg: tb.ColorWhite,
+ }
+ ctx.Fill(x, 0, ctx.Width()-x, 1, cell)
+}
+
+func (strip *TabStrip) Invalidate() {
+ if strip.onInvalidateStrip != nil {
+ strip.onInvalidateStrip(strip)
+ }
+}
+
+func (strip *TabStrip) OnInvalidate(onInvalidate func(d Drawable)) {
+ strip.onInvalidateStrip = onInvalidate
+}
+
+func (content *TabContent) Draw(ctx *Context) {
+ tab := content.Tabs[content.Selected]
+ tab.Content.Draw(ctx)
+}
+
+func (content *TabContent) Invalidate() {
+ if content.onInvalidateContent != nil {
+ content.onInvalidateContent(content)
+ }
+}
+
+func (content *TabContent) OnInvalidate(onInvalidate func(d Drawable)) {
+ content.onInvalidateContent = onInvalidate
+}