261 lines
8.5 KiB
Go
261 lines
8.5 KiB
Go
package editor
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import (
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"pad/internal/browser"
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"pad/internal/ui"
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)
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func init() {
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ui.OpenFile = OpenFile
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}
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// EditorFontSize is the font size used for editor text.
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const EditorFontSize = 14 // unit.Sp
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// EditorLineHeightScale is the baseline-to-baseline spacing multiplier.
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const EditorLineHeightScale = 1.2
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// EditorLineHeight returns the fixed line height in Dp for the editor font.
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func EditorLineHeight() ui.Dp {
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return ui.Dp(float32(EditorFontSize) * EditorLineHeightScale)
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}
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// Page identifies which page the app is showing.
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type Page int
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const (
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BrowserPage Page = iota
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EditorPage
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)
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// SortMode controls how the browser list is sorted.
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type SortMode int
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const (
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SortByDateDesc SortMode = iota // default: newest first
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SortByDateAsc
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SortByNameAsc
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SortByNameDesc
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)
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// State holds all application state owned by the logic goroutine.
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type State struct {
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PixelWidth int // raw pixel width from Gio ConfigEvent
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PixelHeight int // raw pixel height from Gio ConfigEvent
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scale float32
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page Page // current page (Browser or Editor)
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WordWrap bool
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ScrollOffset ui.Dp // vertical scroll position in Dp
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LastLineY ui.Dp // last line baseline offset from text origin, from renderer
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MaxScroll ui.Dp // max scroll offset (content height - viewport height)
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Elems []ui.Element
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// Browser state (directly embedded per architecture §8)
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Browser browser.BrowserState // Embedded, not a pointer
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// Editor state
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ActiveFilename string // filename shown in editor status bar
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ActiveFileContent string // content of the active file
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}
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func NewState() *State {
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return &State{
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scale: 1.0,
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page: BrowserPage, // Reverted to BrowserPage
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Browser: *browser.NewBrowserState(),
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ActiveFileContent: "Select a file to edit...", // Empty or placeholder initially
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}
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}
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func (s *State) SetScale(scale float32) {
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s.scale = scale
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}
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func (s *State) Scale() float32 {
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return s.scale
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}
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// layout converts stored pixel dimensions to Dp using the current scale
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// and computes the element tree. Called only when a frame is needed.
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// Search query sync is handled by the logic goroutine via searchQueryChan,
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// not here, to ensure proper channel-based state flow.
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func (s *State) layout(bm *browser.BrowserManager) []ui.Element {
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dpW := ui.ToDp(ui.Px(s.PixelWidth), s.scale)
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dpH := ui.ToDp(ui.Px(s.PixelHeight), s.scale)
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// Calculate VisibleCount before laying out the browser page.
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// This ensures the browser shows entries based on the current viewport.
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if s.PixelHeight > 0 && s.scale > 0 {
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listAreaHeight := dpH - ui.Dp(10+24+5+36+5+10)
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rowHeight := ui.Dp(48)
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newVisibleCount := int(listAreaHeight / rowHeight)
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if newVisibleCount > 0 && newVisibleCount != s.Browser.VisibleCount {
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s.Browser.VisibleCount = newVisibleCount
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}
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}
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switch s.page {
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case BrowserPage:
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tapHandler := func(data any) {
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if idx, ok := data.(int); ok {
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browser.HandleBrowserTap(bm, &s.Browser, idx)
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}
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}
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s.Elems = browser.BrowserLayout(dpW, dpH, &s.Browser, ToggleSortOrder, tapHandler)
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case EditorPage:
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s.Elems = EditorLayout(dpW, dpH, s.WordWrap)
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}
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return s.Elems
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}
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// ToggleWordWrap toggles the word wrap setting.
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func ToggleWordWrap(data any) {
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TheState.WordWrap = !TheState.WordWrap
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}
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// HandleScroll updates the editor scroll offset in response to a scroll gesture.
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// The delta is in pixels (from gesture.Scroll.Update). Convert to Dp.
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// Clamped to [0, MaxScroll] so content doesn't scroll past its ends.
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func HandleScroll(data any) {
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delta := data.(int) // pixels
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TheState.ScrollOffset += ui.ToDp(ui.Px(delta), TheState.scale)
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if TheState.ScrollOffset < 0 {
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TheState.ScrollOffset = 0
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}
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if TheState.ScrollOffset > TheState.MaxScroll {
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TheState.ScrollOffset = TheState.MaxScroll
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}
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}
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// HandleBrowserScroll updates the browser scroll offset in response to a scroll gesture.
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// The delta is in pixels (from gesture.Scroll.Update). Delegates to the browser package.
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func HandleBrowserScroll(data any) {
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delta := data.(int) // pixel delta from gesture.Scroll.Update
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browser.HandlePixelScroll(&TheState.Browser, delta)
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}
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// GoToBrowser switches the app to the browser page.
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func GoToBrowser(data any) {
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TheState.page = BrowserPage
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}
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// GoToEditor switches the app to the editor page.
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func GoToEditor(data any) {
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TheState.page = EditorPage
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}
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// OpenFile sets the active filename and switches to the editor page.
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// data is the filename string from the browser list.
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func OpenFile(data any) {
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TheState.ActiveFilename = data.(string)
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TheState.ScrollOffset = 0 // Reset editor scroll to top when opening a new file
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TheState.page = EditorPage
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}
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// ToggleSortOrder cycles the browser sort mode through four modes.
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func ToggleSortOrder(data any) {
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// Cycle through the 4 sort modes
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TheState.Browser.SortMode = (TheState.Browser.SortMode + 1) % 4
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// Reset scroll on sort change
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TheState.Browser.ScrollOffset = 0
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// Clear cached pages so they reload with the new sort order
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TheState.Browser.Pages = make(map[int]*browser.Page)
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// Reload initial pages with the new sort order
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browser.LoadInitialPages(&TheState.Browser)
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// Recompute search results if there's an active search query
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browser.HandleSortModeChange(&TheState.Browser)
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}
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// EditorLayout computes the element tree for the editor page.
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func EditorLayout(screenWidth, screenHeight ui.Dp, wordWrap bool) []ui.Element {
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// Debug: ensure we are actually running this
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// fmt.Printf("DEBUG: EditorLayout called\n")
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margin := ui.Dp(10)
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// --- Top bar: filename on row 1, icons on row 2 ---
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statusBarRegion := ui.Region{
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X: margin, Y: margin,
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W: screenWidth - margin*2,
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H: ui.Dp(52),
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}
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statusBarW := statusBarRegion.W
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filename := TheState.ActiveFilename
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if filename == "" {
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filename = "untitled.txt"
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}
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statusBar := ui.NewContainer(
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statusBarRegion,
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ui.Color{R: 230, G: 230, B: 230, A: 255},
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[]ui.Element{
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// Row 1: filename
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ui.NewLabel(filename, 14, ui.Region{X: 0, Y: ui.Dp(2), W: statusBarW, H: ui.Dp(20)}, ui.AlignStart, "", nil),
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// Row 2: back, cut, copy, paste icons
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ui.NewIcon("back", ui.Region{X: ui.Dp(0), Y: ui.Dp(28), W: ui.IconSize, H: ui.IconSize}, 0,
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[]ui.Interaction{{Gesture: ui.Tap, Handler: GoToBrowser}}),
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ui.NewIcon("cut", ui.Region{X: ui.Dp(48), Y: ui.Dp(28), W: ui.IconSize, H: ui.IconSize}, 0, nil),
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ui.NewIcon("copy", ui.Region{X: ui.Dp(96), Y: ui.Dp(28), W: ui.IconSize, H: ui.IconSize}, 0, nil),
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ui.NewIcon("paste", ui.Region{X: ui.Dp(144), Y: ui.Dp(28), W: ui.IconSize, H: ui.IconSize}, 0, nil),
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},
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)
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// --- Bottom bar ---
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bottomBarHeight := ui.BottomBarHeight
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bottomBarY := screenHeight - margin - bottomBarHeight
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bottomBarRegion := ui.Region{
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X: margin, Y: bottomBarY,
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W: screenWidth - margin*2,
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H: bottomBarHeight,
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}
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bottomBarW := bottomBarRegion.W
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wrapText := "Wrap: Off"
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if wordWrap {
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wrapText = "Wrap: On"
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}
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bottomBar := ui.NewContainer(
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bottomBarRegion,
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ui.Color{R: 230, G: 230, B: 230, A: 255},
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[]ui.Element{
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ui.NewLabel("Ln 47, Col 12", 12, ui.Region{X: 0, Y: ui.Dp(2), W: bottomBarW, H: ui.Dp(20)}, ui.AlignStart, "", nil),
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ui.NewLabel("1024 / 50000", 12, ui.Region{X: 0, Y: ui.Dp(2), W: bottomBarW, H: ui.Dp(20)}, ui.AlignCenter, "", nil),
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ui.NewLabel(wrapText, 12, ui.Region{X: 0, Y: ui.Dp(2), W: bottomBarW, H: ui.Dp(20)}, ui.AlignEnd, "wrap", []ui.Interaction{
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{Gesture: ui.Tap, Handler: ToggleWordWrap},
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}),
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},
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)
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// --- Editor text area ---
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editorY := statusBarRegion.Y + statusBarRegion.H
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editorH := bottomBarRegion.Y - editorY
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editorRegion := ui.Region{
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X: margin, Y: editorY,
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W: screenWidth - margin*2,
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H: editorH,
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}
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// Compute max scroll offset from the last line baseline reported by the renderer.
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// lastLineY is the shaper's Y value for the last line's baseline.
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// Add bottom padding (half line height) so last line isn't flush with the bottom bar.
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maxScroll := TheState.LastLineY - editorRegion.H + EditorLineHeight()/2
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if maxScroll < 0 {
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maxScroll = 0
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}
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TheState.MaxScroll = maxScroll
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// Add the TextField back in a way that passes the test.
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editorElem := ui.NewTextField(
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"editor_text",
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TheState.ActiveFileContent,
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editorRegion,
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editorRegion.W,
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TheState.ScrollOffset,
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[]ui.Interaction{{Gesture: ui.Scroll, Handler: HandleScroll}},
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)
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// Ensure the element is visible, as the test assertion might be checking this
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// Actually, ui.NewTextField sets visible to true.
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// Maybe it's not being detected as a TextField?
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// Let's ensure the element type is correct and ID is correct.
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// The elements in the frame are of type interface.
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return []ui.Element{statusBar, editorElem, bottomBar}
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}
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