aerc - mirror of ~rjarry's aerc fork - a pretty good email client

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Diffstat (limited to 'widgets/status.go')

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1 files changed, 4 insertions, 0 deletions

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package ui import ( "github.com/gdamore/tcell" "github.com/mattn/go-runewidth" ) type Tabs struct { Tabs []*Tab TabStrip *TabStrip TabContent *TabContent Selected int history []int onInvalidateStrip func(d Drawable) onInvalidateContent func(d Drawable) parent *Tabs CloseTab func(index int) } 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.TabStrip.parent = tabs tabs.TabContent = (*TabContent)(tabs) tabs.TabContent.parent = tabs tabs.history = []int{} return tabs } func (tabs *Tabs) Add(content Drawable, name string) *Tab { tab := &Tab{ Content: content, Name: name, } tabs.Tabs = append(tabs.Tabs, tab) tabs.TabStrip.Invalidate() content.OnInvalidate(tabs.invalidateChild) return tab } func (tabs *Tabs) invalidateChild(d Drawable) { if tabs.Selected >= len(tabs.Tabs) { return } if tabs.Tabs[tabs.Selected].Content == d { if tabs.onInvalidateContent != nil { tabs.onInvalidateContent(tabs.TabContent) } } } func (tabs *Tabs) Remove(content Drawable) { indexToRemove := -1 for i, tab := range tabs.Tabs { if tab.Content == content { tabs.Tabs = append(tabs.Tabs[:i], tabs.Tabs[i+1:]...) tabs.removeHistory(i) indexToRemove = i break } } if indexToRemove < 0 { return } // only pop the tab history if the closing tab is selected if indexToRemove == tabs.Selected { index, ok := tabs.popHistory() if ok { tabs.Select(index) interactive, ok := tabs.Tabs[tabs.Selected].Content.(Interactive) if ok { interactive.Focus(true) } } } else if indexToRemove < tabs.Selected { // selected tab is now one to the left of where it was tabs.Selected-- } tabs.TabStrip.Invalidate() } func (tabs *Tabs) Replace(contentSrc Drawable, contentTarget Drawable, name string) { replaceTab := &Tab{ Content: contentTarget, Name: name, } for i, tab := range tabs.Tabs { if tab.Content == contentSrc { tabs.Tabs[i] = replaceTab tabs.Select(i) break } } tabs.TabStrip.Invalidate() contentTarget.OnInvalidate(tabs.invalidateChild) } func (tabs *Tabs) Select(index int) { if index >= len(tabs.Tabs) { index = len(tabs.Tabs) - 1 } if tabs.Selected != index { // only push valid tabs onto the history if tabs.Selected < len(tabs.Tabs) { tabs.pushHistory(tabs.Selected) } tabs.Selected = index tabs.TabStrip.Invalidate() tabs.TabContent.Invalidate() } } func (tabs *Tabs) SelectPrevious() bool { index, ok := tabs.popHistory() if !ok { return false } tabs.Select(index) return true } func (tabs *Tabs) MoveTab(to int) { from := tabs.Selected if to < 0 { to = 0 } if to >= len(tabs.Tabs) { to = len(tabs.Tabs) - 1 } tab := tabs.Tabs[from] if to > from { copy(tabs.Tabs[from:to], tabs.Tabs[from+1:to+1]) for i, h := range tabs.history { if h == from { tabs.history[i] = to } if h > from && h <= to { tabs.history[i] -= 1 } } } else if from > to { copy(tabs.Tabs[to+1:from+1], tabs.Tabs[to:from]) for i, h := range tabs.history { if h == from { tabs.history[i] = to } if h >= to && h < from { tabs.history[i] += 1 } } } else { return } tabs.Tabs[to] = tab tabs.Selected = to tabs.TabStrip.Invalidate() } func (tabs *Tabs) NextTab() { next := tabs.Selected + 1 if next >= len(tabs.Tabs) { next = 0 } tabs.Select(next) } func (tabs *Tabs) PrevTab() { next := tabs.Selected - 1 if next < 0 { next = len(tabs.Tabs) - 1 } tabs.Select(next) } func (tabs *Tabs) pushHistory(index int) { tabs.history = append(tabs.history, index) } func (tabs *Tabs) popHistory() (int, bool) { lastIdx := len(tabs.history) - 1 if lastIdx < 0 { return 0, false } item := tabs.history[lastIdx] tabs.history = tabs.history[:lastIdx] return item, true } func (tabs *Tabs) removeHistory(index int) { newHist := make([]int, 0, len(tabs.history)) for i, item := range tabs.history { if item == index { continue } if item > index { item = item - 1 } // dedup if i > 0 && len(newHist) > 0 && item == newHist[len(newHist)-1] { continue } newHist = append(newHist, item) } tabs.history = newHist } // TODO: Color repository func (strip *TabStrip) Draw(ctx *Context) { x := 0 for i, tab := range strip.Tabs { style := tcell.StyleDefault.Reverse(true) if strip.Selected == i { style = tcell.StyleDefault } tabWidth := 32 if ctx.Width()-x < tabWidth { tabWidth = ctx.Width() - x - 2 } trunc := runewidth.Truncate(tab.Name, tabWidth, "…") x += ctx.Printf(x, 0, style, " %s ", trunc) if x >= ctx.Width() { break } } style := tcell.StyleDefault.Reverse(true) ctx.Fill(x, 0, ctx.Width()-x, 1, ' ', style) } func (strip *TabStrip) Invalidate() { if strip.onInvalidateStrip != nil { strip.onInvalidateStrip(strip) } } func (strip *TabStrip) MouseEvent(localX int, localY int, event tcell.Event) { changeFocus := func(focus bool) { interactive, ok := strip.parent.Tabs[strip.parent.Selected].Content.(Interactive) if ok { interactive.Focus(focus) } } unfocus := func() { changeFocus(false) } refocus := func() { changeFocus(true) } switch event := event.(type) { case *tcell.EventMouse: switch event.Buttons() { case tcell.Button1: selectedTab, ok := strip.Clicked(localX, localY) if !ok || selectedTab == strip.parent.Selected { return } unfocus() strip.parent.Select(selectedTab) refocus() case tcell.WheelDown: unfocus() strip.parent.NextTab() refocus() case tcell.WheelUp: unfocus() strip.parent.PrevTab() refocus() case tcell.Button3: selectedTab, ok := strip.Clicked(localX, localY) if !ok { return } unfocus() if selectedTab == strip.parent.Selected { strip.parent.CloseTab(selectedTab) } else { current := strip.parent.Selected strip.parent.CloseTab(selectedTab) strip.parent.Select(current) } refocus() } } } func (strip *TabStrip) OnInvalidate(onInvalidate func(d Drawable)) { strip.onInvalidateStrip = onInvalidate } func (strip *TabStrip) Clicked(mouseX int, mouseY int) (int, bool) { x := 0 for i, tab := range strip.Tabs { trunc := runewidth.Truncate(tab.Name, 32, "…") length := len(trunc) + 2 if x <= mouseX && mouseX < x+length { return i, true } x += length } return 0, false } func (content *TabContent) Children() []Drawable { children := make([]Drawable, len(content.Tabs)) for i, tab := range content.Tabs { children[i] = tab.Content } return children } func (content *TabContent) Draw(ctx *Context) { if content.Selected >= len(content.Tabs) { width := ctx.Width() height := ctx.Height() ctx.Fill(0, 0, width, height, ' ', tcell.StyleDefault) } tab := content.Tabs[content.Selected] tab.Content.Draw(ctx) } func (content *TabContent) MouseEvent(localX int, localY int, event tcell.Event) { tab := content.Tabs[content.Selected] switch tabContent := tab.Content.(type) { case Mouseable: tabContent.MouseEvent(localX, localY, event) } } func (content *TabContent) Invalidate() { if content.onInvalidateContent != nil { content.onInvalidateContent(content) } tab := content.Tabs[content.Selected] tab.Content.Invalidate() } func (content *TabContent) OnInvalidate(onInvalidate func(d Drawable)) { content.onInvalidateContent = onInvalidate }


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