127 lines
2.9 KiB
Go
127 lines
2.9 KiB
Go
package objects
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import "git.tebibyte.media/tomo/tomo"
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import "git.tebibyte.media/tomo/tomo/input"
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import "git.tebibyte.media/tomo/objects/layouts"
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type TabbedContainer struct {
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tomo.ContainerBox
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leftSpacer tomo.Box
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rightSpacer tomo.Box
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tabsRow tomo.ContainerBox
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active string
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tabs []*tab
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}
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func NewTabbedContainer () *TabbedContainer {
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container := &TabbedContainer {
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ContainerBox: tomo.NewContainerBox(),
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}
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container.SetRole(tomo.R("objects", "TabbedContainer", ""))
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container.SetLayout(layouts.Column { false, true } )
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container.tabsRow = tomo.NewContainerBox()
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container.tabsRow.SetRole(tomo.R("objects", "TabRow", ""))
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container.Add(container.tabsRow)
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container.leftSpacer = tomo.NewBox()
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container.leftSpacer.SetRole(tomo.R("objects", "TabSpacer", "left"))
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container.rightSpacer = tomo.NewBox()
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container.rightSpacer.SetRole(tomo.R("objects", "TabSpacer", "right"))
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container.ClearTabs()
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container.setTabRowLayout()
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return container
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}
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func (this *TabbedContainer) Activate (name string) {
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if _, tab := this.findTab(this.active); tab != nil {
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tab.setActive(false)
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this.Remove(tab.root)
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}
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if _, tab := this.findTab(name); tab != nil {
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tab.setActive(true)
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this.Add(tab.root)
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} else {
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name = ""
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}
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this.active = name
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}
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func (this *TabbedContainer) AddTab (name string, root tomo.Object) {
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tab := &tab {
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TextBox: tomo.NewTextBox(),
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name: name,
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root: root,
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}
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tab.SetRole(tomo.R("objects", "Tab", ""))
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tab.SetText(name)
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tab.OnMouseDown(func (button input.Button) {
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if button != input.ButtonLeft { return }
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this.Activate(name)
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})
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this.tabs = append(this.tabs, tab)
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this.tabsRow.Insert(tab, this.rightSpacer)
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this.setTabRowLayout()
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// if the row was empty before, activate this tab
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if len(this.tabs) == 1 {
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this.Activate(name)
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}
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}
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func (this *TabbedContainer) RemoveTab (name string) {
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index, tab := this.findTab(name)
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if index < 0 { return }
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nextIndex := index - 1
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this.tabsRow.Remove(tab)
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this.tabs = append(this.tabs[:index], this.tabs[index - 1:]...)
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this.setTabRowLayout()
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if nextIndex < 0 { nextIndex = 0 }
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if nextIndex >= len(this.tabs) { nextIndex = len(this.tabs) - 1 }
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if nextIndex < 0 {
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this.Activate("")
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} else {
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this.Activate(this.tabs[nextIndex].name)
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}
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}
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func (this *TabbedContainer) ClearTabs () {
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this.tabs = nil
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this.tabsRow.Clear()
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this.tabsRow.Add(this.leftSpacer)
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this.tabsRow.Add(this.rightSpacer)
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}
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func (this *TabbedContainer) setTabRowLayout () {
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row := make(layouts.Row, 1 + len(this.tabs) + 1)
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row[len(row) - 1] = true
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this.tabsRow.SetLayout(row)
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}
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func (this *TabbedContainer) findTab (name string) (int, *tab) {
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for index, tab := range this.tabs {
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if tab.name == name { return index, tab }
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}
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return -1, nil
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}
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type tab struct {
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tomo.TextBox
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name string
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root tomo.Object
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}
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func (this *tab) setActive (active bool) {
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if active {
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this.SetRole(tomo.R("objects", "Tab", "active"))
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} else {
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this.SetRole(tomo.R("objects", "Tab", ""))
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}
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}
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