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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
| package components | ||
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| import ( | ||
| "fyne.io/fyne/v2" | ||
| ) | ||
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| // StackNavigator represents a stack-based navigation manager | ||
| type StackNavigator struct { | ||
| stack []fyne.CanvasObject | ||
| current int | ||
| OnBack func() | ||
| } | ||
|
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| // NewNavigator creates a new Navigator instance. | ||
| func NewNavigator(initialPage fyne.CanvasObject) *StackNavigator { | ||
| return &StackNavigator{stack: []fyne.CanvasObject{initialPage}} | ||
| } | ||
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| // Next moves the view to the next view in the stack without adding contents. | ||
| // This allows viewes to move forwards through views without recreating each time. | ||
| func (n *StackNavigator) Next() { | ||
| if n.current == len(n.stack)-1 { | ||
| return | ||
| } | ||
|
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| n.current++ | ||
| } | ||
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| // Previous moves the view to the previous view in the stack without removing contents. | ||
| // This allows viewes to move backwards through views without recreating each time. | ||
| func (n *StackNavigator) Previous() { | ||
| if n.current == 0 || len(n.stack) < 1 { | ||
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| } | ||
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| n.current-- | ||
| } | ||
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| // Push adds a new page to the stack and displays it. | ||
| func (n *StackNavigator) Push(page fyne.CanvasObject) { | ||
| n.stack = append(n.stack, page) | ||
| n.Next() | ||
| } | ||
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| // Pop removes the current page and returns to the previous one. | ||
| func (n *StackNavigator) Pop() { | ||
| if len(n.stack) <= 1 { | ||
| return // Prevent popping the last page | ||
| } | ||
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| n.stack[len(n.stack)-1] = nil | ||
| n.stack = n.stack[:len(n.stack)-1] | ||
| n.Previous() | ||
| } |