"github.com/zyedidia/tcell"
)
-var MainTab *TabPane
+// The TabList is a list of tabs and a window to display the tab bar
+// at the top of the screen
+type TabList struct {
+ *display.TabWindow
+ List []*Tab
+}
-type TabPane struct {
- *views.Node
- display.Window
- Panes []*EditPane
- active int
+// NewTabList creates a TabList from a list of buffers by creating a Tab
+// for each buffer
+func NewTabList(bufs []*buffer.Buffer) *TabList {
+ w, h := screen.Screen.Size()
+ tl := new(TabList)
+ tl.List = make([]*Tab, len(bufs))
+ if len(bufs) > 1 {
+ for i, b := range bufs {
+ tl.List[i] = NewTabFromBuffer(0, 1, w, h-2, b)
+ }
+ } else {
+ tl.List[0] = NewTabFromBuffer(0, 0, w, h-1, bufs[0])
+ }
+ tl.TabWindow = display.NewTabWindow(w, 0)
+ tl.Names = make([]string, len(bufs))
- resizing *views.Node // node currently being resized
+ return tl
}
-func (t *TabPane) HandleEvent(event tcell.Event) {
+// UpdateNames makes sure that the list of names the tab window has access to is
+// correct
+func (t *TabList) UpdateNames() {
+ t.Names = t.Names[:0]
+ for _, p := range t.List {
+ t.Names = append(t.Names, p.Panes[p.active].Name())
+ }
+}
+
+// AddTab adds a new tab to this TabList
+func (t *TabList) AddTab(p *Tab) {
+ t.List = append(t.List, p)
+ t.Resize()
+ t.UpdateNames()
+}
+
+// RemoveTab removes a tab with the given id from the TabList
+func (t *TabList) RemoveTab(id uint64) {
+ for i, p := range t.List {
+ if len(p.Panes) == 0 {
+ continue
+ }
+ if p.Panes[0].ID() == id {
+ copy(t.List[i:], t.List[i+1:])
+ t.List[len(t.List)-1] = nil
+ t.List = t.List[:len(t.List)-1]
+ if t.Active() >= len(t.List) {
+ t.SetActive(len(t.List) - 1)
+ }
+ t.Resize()
+ t.UpdateNames()
+ return
+ }
+ }
+}
+
+// Resize resizes all elements within the tab list
+// One thing to note is that when there is only 1 tab
+// the tab bar should not be drawn so resizing must take
+// that into account
+func (t *TabList) Resize() {
+ w, h := screen.Screen.Size()
+ InfoBar.Resize(w, h-1)
+ if len(t.List) > 1 {
+ for _, p := range t.List {
+ p.Y = 1
+ p.Node.Resize(w, h-2)
+ p.Resize()
+ }
+ } else if len(t.List) == 1 {
+ t.List[0].Y = 0
+ t.List[0].Node.Resize(w, h-1)
+ t.List[0].Resize()
+ }
+}
+
+// HandleEvent checks for a resize event or a mouse event on the tab bar
+// otherwise it will forward the event to the currently active tab
+func (t *TabList) HandleEvent(event tcell.Event) {
switch e := event.(type) {
case *tcell.EventResize:
- w, h := screen.Screen.Size()
- InfoBar.Resize(w, h-1)
- t.Node.Resize(w, h-1)
t.Resize()
case *tcell.EventMouse:
+ mx, my := e.Position()
switch e.Buttons() {
case tcell.Button1:
- mx, my := e.Position()
+ ind := t.GetMouseLoc(buffer.Loc{mx, my})
+ if ind != -1 {
+ t.SetActive(ind)
+ }
+ case tcell.WheelUp:
+ if my == t.Y {
+ t.Scroll(4)
+ return
+ }
+ case tcell.WheelDown:
+ if my == t.Y {
+ t.Scroll(-4)
+ return
+ }
+ }
+ }
+ t.List[t.Active()].HandleEvent(event)
+}
- resizeID := t.GetMouseLoc(buffer.Loc{mx, my}).X
+// Display updates the names and then displays the tab bar
+func (t *TabList) Display() {
+ t.UpdateNames()
+ if len(t.List) > 1 {
+ t.TabWindow.Display()
+ }
+}
+
+// Tabs is the global tab list
+var Tabs *TabList
+
+func InitTabs(bufs []*buffer.Buffer) {
+ Tabs = NewTabList(bufs)
+}
+
+func MainTab() *Tab {
+ return Tabs.List[Tabs.Active()]
+}
+
+// A Tab represents a single tab
+// It consists of a list of edit panes (the open buffers),
+// a split tree (stored as just the root node), and a uiwindow
+// to display the UI elements like the borders between splits
+type Tab struct {
+ *views.Node
+ *display.UIWindow
+ Panes []Pane
+ active int
+
+ resizing *views.Node // node currently being resized
+}
+
+// NewTabFromBuffer creates a new tab from the given buffer
+func NewTabFromBuffer(x, y, width, height int, b *buffer.Buffer) *Tab {
+ t := new(Tab)
+ t.Node = views.NewRoot(x, y, width, height)
+ t.UIWindow = display.NewUIWindow(t.Node)
+
+ e := NewBufEditPane(x, y, width, height, b)
+ e.splitID = t.ID()
+
+ t.Panes = append(t.Panes, e)
+ return t
+}
+
+// HandleEvent takes a tcell event and usually dispatches it to the current
+// active pane. However if the event is a resize or a mouse event where the user
+// is interacting with the UI (resizing splits) then the event is consumed here
+// If the event is a mouse event in a pane, that pane will become active and get
+// the event
+func (t *Tab) HandleEvent(event tcell.Event) {
+ switch e := event.(type) {
+ case *tcell.EventMouse:
+ mx, my := e.Position()
+ switch e.Buttons() {
+ case tcell.Button1:
+ resizeID := t.GetMouseSplitID(buffer.Loc{mx, my})
if t.resizing != nil {
var size int
if t.resizing.Kind == views.STVert {
return
}
- if resizeID != -1 {
+ if resizeID != 0 {
t.resizing = t.GetNode(uint64(resizeID))
return
}
v := p.GetView()
inpane := mx >= v.X && mx < v.X+v.Width && my >= v.Y && my < v.Y+v.Height
if inpane {
- t.active = i
- p.SetActive(true)
- } else {
- p.SetActive(false)
+ t.SetActive(i)
+ break
}
}
case tcell.ButtonNone:
t.resizing = nil
+ default:
+ for _, p := range t.Panes {
+ v := p.GetView()
+ inpane := mx >= v.X && mx < v.X+v.Width && my >= v.Y && my < v.Y+v.Height
+ if inpane {
+ p.HandleEvent(event)
+ return
+ }
+ }
}
}
t.Panes[t.active].HandleEvent(event)
}
-func (t *TabPane) SetActive(i int) {
+// SetActive changes the currently active pane to the specified index
+func (t *Tab) SetActive(i int) {
t.active = i
for j, p := range t.Panes {
if j == i {
}
}
-func (t *TabPane) GetPane(splitid uint64) int {
+// GetPane returns the pane with the given split index
+func (t *Tab) GetPane(splitid uint64) int {
for i, p := range t.Panes {
- if p.splitID == splitid {
+ if p.ID() == splitid {
return i
}
}
return 0
}
-func (t *TabPane) RemovePane(i int) {
+// Remove pane removes the pane with the given index
+func (t *Tab) RemovePane(i int) {
copy(t.Panes[i:], t.Panes[i+1:])
- t.Panes[len(t.Panes)-1] = nil // or the zero value of T
+ t.Panes[len(t.Panes)-1] = nil
t.Panes = t.Panes[:len(t.Panes)-1]
}
-func (t *TabPane) Resize() {
- for i, p := range t.Panes {
- n := t.GetNode(p.splitID)
+// Resize resizes all panes according to their corresponding split nodes
+func (t *Tab) Resize() {
+ for _, p := range t.Panes {
+ n := t.GetNode(p.ID())
pv := p.GetView()
offset := 0
- if i != 0 {
+ if n.X != 0 {
offset = 1
}
pv.X, pv.Y = n.X+offset, n.Y
}
}
-func (t *TabPane) CurPane() *EditPane {
+// CurPane returns the currently active pane
+func (t *Tab) CurPane() Pane {
return t.Panes[t.active]
}
projects / micro.git / blobdiff