131 lines
2.9 KiB
Go
131 lines
2.9 KiB
Go
// The UI manager. This manages the components that make up the UI and dispatches
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// events.
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package ui
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// The UI manager
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type Ui struct {
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//grid *Grid
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//statusBar *UiStatusBar
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// The root component
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rootComponent UiComponent
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drawContext *DrawContext
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driver Driver
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}
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// Creates a new UI context. This also initializes the UI state.
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// Returns the context and an error.
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func NewUI() (*Ui, error) {
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driver := &TermboxDriver{}
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err := driver.Init()
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if err != nil {
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return nil, err
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}
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drawContext := &DrawContext{ driver: driver }
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ui := &Ui{ drawContext: drawContext, driver: driver }
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/*
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termboxError := termbox.Init()
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if termboxError != nil {
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return nil, termboxError
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} else {
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uiCtx := new(Ui) // &Ui{&UiStatusBar{"Hello", "World"}}
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uiCtx.grid = NewGrid(&TestModel{})
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uiCtx.statusBar = &UiStatusBar{"Hello", "World"}
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return uiCtx, nil
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}
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// XXX: Workaround for bug in compiler
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panic("Unreachable code")
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return nil, nil
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*/
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return ui, nil
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}
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// Closes the UI context.
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func (ui *Ui) Close() {
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ui.driver.Close()
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}
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// Sets the root component
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func (ui *Ui) SetRootComponent(comp UiComponent) {
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ui.rootComponent = comp
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ui.Remeasure()
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}
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// Remeasures the UI
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func (ui *Ui) Remeasure() {
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ui.drawContext.X = 0
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ui.drawContext.Y = 0
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ui.drawContext.W, ui.drawContext.H = ui.driver.Size()
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ui.rootComponent.Remeasure(ui.drawContext.W, ui.drawContext.H)
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}
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// Redraws the UI.
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func (ui *Ui) Redraw() {
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ui.Remeasure()
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ui.rootComponent.Redraw(ui.drawContext)
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ui.driver.Sync()
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}
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/**
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* Internal redraw function which does not query the terminal size.
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*/
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/*
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func (ui *Ui) redrawInternal(width, height int) {
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termbox.Clear(termbox.ColorDefault, termbox.ColorDefault)
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// TODO: This will eventually offload to UI "components"
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ui.grid.Redraw(0, 0, width, height - 2)
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// Draws the status bar
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ui.statusBar.Redraw(0, height - 2, width, 2)
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termbox.Flush()
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}
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*/
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// Enter the UI loop
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func (ui *Ui) Loop() {
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//for {
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ui.Redraw()
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ui.driver.WaitForEvent()
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/*
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if event.Type == termbox.EventResize {
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ui.redrawInternal(event.Width, event.Height)
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} else {
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// !!TEMP!!
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if (event.Ch == 'i') {
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ui.grid.MoveBy(0, -1)
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} else if (event.Ch == 'k') {
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ui.grid.MoveBy(0, 1)
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} else if (event.Ch == 'j') {
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ui.grid.MoveBy(-1, 0)
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} else if (event.Ch == 'l') {
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ui.grid.MoveBy(1, 0)
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} else {
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return UiEvent{EventKeyPress, 0}
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}
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// !!END TEMP!!
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ui.Redraw()
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//return UiEvent{EventKeyPress, 0}
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}
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*/
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//}
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// XXX: Workaround for bug in compiler
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} |