package display // This file contains the functions that aren't part of the public API. // The funcs are for network and displaying. import ( "net/url" "strconv" "strings" "github.com/makeworld-the-better-one/amfora/renderer" "github.com/makeworld-the-better-one/amfora/structs" ) // followLink should be used when the user "clicks" a link on a page, // but not when a URL is opened on a new tab for the first time. // // It will handle updating the bottomBar. // // It should be called with the `go` keyword to spawn a new goroutine if // it would otherwise block the UI loop, such as when called from an input // handler. // // It blocks until navigation is finished, and we've completed any user // interaction related to loading the URL (such as info, error modals) func followLink(t *tab, prev, next string) { if strings.HasPrefix(next, "about:") { goURL(t, next) return } if t.hasContent() && !t.isAnAboutPage() { nextURL, err := resolveRelLink(t, prev, next) if err != nil { Error("URL Error", err.Error()) return } goURL(t, nextURL) return } // No content on current tab, so the "prev" URL is not valid. // An example is the about:newtab page _, err := url.Parse(next) if err != nil { Error("URL Error", "Link URL could not be parsed") return } goURL(t, next) } // reformatPage will take the raw page content and reformat it according to the current terminal dimensions. // It should be called when the terminal size changes. // It will not waste resources if the passed page is already fitted to the current terminal width, and can be // called safely even when the page might be already formatted properly. func reformatPage(p *structs.Page) { if p.TermWidth == termW { // No changes to make return } // TODO: Setup a renderer.RenderFromMediatype func so this isn't needed var rendered string switch p.Mediatype { case structs.TextGemini: // Links are not recorded because they won't change proxied := true if strings.HasPrefix(p.URL, "gemini") || strings.HasPrefix(p.URL, "about") || strings.HasPrefix(p.URL, "file") { proxied = false } rendered, _ = renderer.RenderGemini(p.Raw, textWidth(), proxied) case structs.TextPlain: rendered = renderer.RenderPlainText(p.Raw) case structs.TextAnsi: rendered = renderer.RenderANSI(p.Raw) default: // Rendering this type is not implemented return } p.Content = rendered p.TermWidth = termW } // reformatPageAndSetView is for reformatting a page that is already being displayed. // setPage should be used when a page is being loaded for the first time. func reformatPageAndSetView(t *tab, p *structs.Page) { if p.TermWidth == termW { // No changes to make return } reformatPage(p) t.view.SetText(p.Content) t.applyScroll() // Go back to where you were, roughly App.Draw() } // setPage displays a Page on the passed tab number. // The bottomBar is not actually changed in this func func setPage(t *tab, p *structs.Page) { if !isValidTab(t) { // Don't waste time reformatting an invalid tab return } // Make sure the page content is fitted to the terminal every time it's displayed reformatPage(p) t.page = p // Change page on screen t.view.SetText(p.Content) t.view.Highlight("") // Turn off highlights, other funcs may restore if necessary t.view.ScrollToBeginning() // Reset page left margin tabNum := tabNumber(t) browser.AddTab( strconv.Itoa(tabNum), t.label(), makeContentLayout(t.view, leftMargin()), ) App.Draw() // Setup display App.SetFocus(t.view) // Save bottom bar for the tab - other funcs will apply/display it t.barLabel = "" t.barText = p.URL } // goURL is like handleURL, but takes care of history and the bottomBar. // It should be preferred over handleURL in most cases. // It has no return values to be processed. // // It should be called in a goroutine. func goURL(t *tab, u string) { // Update page cache in history for #122 t.historyCachePage() final, displayed := handleURL(t, u, 0) if displayed { t.addToHistory(final) } else if t.page.URL == "" { // The tab is showing interstitial or no content. Let's go to about:newtab. handleAbout(t, "about:newtab") } if t == tabs[curTab] { // Display the bottomBar state that handleURL set t.applyBottomBar() } }