Make a distinction between notebook tabs and pages

notebook.go

@@ -6,13 +6,13 @@ import "git.tebibyte.media/tomo/objects/layouts"
 
 var _ tomo.Object = new(Notebook)
 
-// Notebook holds multiple objects, each in their own tab. The user can click
+// Notebook holds multiple objects, each in their own page. The user can click
 // the tab bar at the top to choose which one is activated.
 //
 // Sub-components:
 //   - TabRow sits at the top of the container and contains a row of tabs.
 //   - TabSpacer sits at either end of the tab row, bookending the list of tabs.
-//   - Tab appears in the tab row for each tab in the container. The user can
+//   - Tab appears in the tab row for each tab in the notebook. The user can
 //     click on the tab to switch to it.
 //
 // TabSpacer tags:
@@ -20,15 +20,15 @@ var _ tomo.Object = new(Notebook)
 //   - [right] The spacer is on the right.
 //
 // Tab tags:
-//   - [active] The tab is currently active and its contents are visible.
+//   - [active] The tab is currently active and its page is visible.
 type Notebook struct {
 	box tomo.ContainerBox
 	
 	leftSpacer  tomo.Box
 	rightSpacer tomo.Box
-	tabsRow tomo.ContainerBox
-	active string
-	tabs []*tab
+	tabsRow     tomo.ContainerBox
+	active      string
+	pages       []*page
 }
 
 // NewNotebook creates a new tabbed notebook.
@@ -60,7 +60,7 @@ func (this *Notebook) GetBox () tomo.Box {
 	return this.box
 }
 
-// Activate switches to a named tab.
+// Activate switches to a named page.
 func (this *Notebook) Activate (name string) {
 	if _, tab := this.findTab(this.active); tab != nil {
 		tab.setActive(false)
@@ -75,82 +75,82 @@ func (this *Notebook) Activate (name string) {
 	this.active = name
 }
 
-// Add adds an object as a tab with the specified name.
+// Add adds an object as a page with the specified name.
 func (this *Notebook) Add (name string, root tomo.Object) {
-	tab := &tab {
+	pag := &page {
 		TextBox: tomo.NewTextBox(),
 		name:    name,
 		root:    root,
 	}
-	tab.SetRole(tomo.R("objects", "Tab"))
-	tab.SetText(name)
-	tab.OnButtonDown(func (button input.Button) bool {
+	pag.SetRole(tomo.R("objects", "Tab"))
+	pag.SetText(name)
+	pag.OnButtonDown(func (button input.Button) bool {
 		if button != input.ButtonLeft { return false }
 		this.Activate(name)
 		return true
 	})
-	tab.OnButtonUp(func (button input.Button) bool {
+	pag.OnButtonUp(func (button input.Button) bool {
 		if button != input.ButtonLeft { return false }
 		return true
 	})
 	
-	this.tabs = append(this.tabs, tab)
-	this.tabsRow.Insert(tab, this.rightSpacer)
+	this.pages = append(this.pages, pag)
+	this.tabsRow.Insert(pag, this.rightSpacer)
 	this.setTabRowLayout()
 	
 	// if the row was empty before, activate this tab
-	if len(this.tabs) == 1 {
+	if len(this.pages) == 1 {
 		this.Activate(name)	
 	}
 }
 
-// Remove removes the named tab.
+// Remove removes the named page.
 func (this *Notebook) Remove (name string) {
 	index, tab := this.findTab(name)
 	if index < 0 { return }
 	nextIndex := index - 1
 	
 	this.tabsRow.Remove(tab)
-	this.tabs = append(this.tabs[:index], this.tabs[index - 1:]...)
+	this.pages = append(this.pages[:index], this.pages[index - 1:]...)
 	this.setTabRowLayout()
 	
-	if nextIndex < 0               { nextIndex = 0 }
-	if nextIndex >= len(this.tabs) { nextIndex = len(this.tabs) - 1 }
+	if nextIndex < 0                { nextIndex = 0                   }
+	if nextIndex >= len(this.pages) { nextIndex = len(this.pages) - 1 }
 	if nextIndex < 0 {
 		this.Activate("")
 	} else {
-		this.Activate(this.tabs[nextIndex].name)
+		this.Activate(this.pages[nextIndex].name)
 	}
 }
 
 // Clear removes all tabs.
 func (this *Notebook) Clear () {
-	this.tabs = nil
+	this.pages = nil
 	this.tabsRow.Clear()
 	this.tabsRow.Add(this.leftSpacer)
 	this.tabsRow.Add(this.rightSpacer)
 }
 
 func (this *Notebook) setTabRowLayout () {
-	row := make(layouts.Row, 1 + len(this.tabs) + 1)
+	row := make(layouts.Row, 1 + len(this.pages) + 1)
 	row[len(row) - 1] = true
 	this.tabsRow.SetAttr(tomo.ALayout(row))
 }
 
-func (this *Notebook) findTab (name string) (int, *tab) {
-	for index, tab := range this.tabs {
-		if tab.name == name { return index, tab }
+func (this *Notebook) findTab (name string) (int, *page) {
+	for index, pag := range this.pages {
+		if pag.name == name { return index, pag }
 	}
 	return -1, nil
 }
 
-type tab struct {
+type page struct {
 	tomo.TextBox
 	name string
 	root tomo.Object
 }
 
-func (this *tab) setActive (active bool) {
+func (this *page) setActive (active bool) {
 	if active {
 		this.SetRole(tomo.R("objects", "Tab"))
 		this.SetTag("active", true)