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render.go
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render.go
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package main
import (
"log"
"sort"
"strings"
"github.com/1egoman/slick/frontend"
)
// Given application state and a frontend, render the state to the screen.
// This function is called whenever something in state is changed.
func render(state *State, term *frontend.TerminalDisplay) {
// If the user switched connections, then refresh
if state.ConnectionIsStale() && state.ActiveConnection() != nil {
state.SyncActiveConnection()
log.Printf("User switching to new active connection: %s", state.ActiveConnection().Name())
// Emit event to to be handled by lua scripts
EmitEvent(state, EVENT_CONNECTION_CHANGE, map[string]string{
"name": state.ActiveConnection().Name(),
})
go func() {
state.Status.Printf("Loading team %s...", state.ActiveConnection().Name())
render(state, term)
if err := state.ActiveConnection().Refresh(false); err != nil {
state.Offline = true // Currently offline, since we couldn't refresh the channel
state.Status.Errorf(err.Error())
} else {
state.Offline = false
}
state.Status.Clear()
render(state, term)
}()
}
// Before rendering any controls, make sure that we take into account multiline commandS:
// Status bar: 1 high
// Sommand Bar: the hight is the nmber of lines in the command.
frontend.BottomPadding = 1 + len(strings.Split(string(state.Command), "\n"))
// Render messages provided by the active connection
if state.ActiveConnection() != nil {
state.RenderedMessageNumber, state.RenderedAllMessages = term.DrawMessages(
state.ActiveConnection().MessageHistory(), // List of messages
len(state.ActiveConnection().MessageHistory())-1-state.SelectedMessageIndex, // Is a message selected?
state.BottomDisplayedItem, // Bottommost item
state.ActiveConnection().UserById,
state.ActiveConnection().UserOnline,
state.Configuration,
)
} else {
term.DrawBlankLines(0, -1*frontend.BottomPadding)
term.DrawInfoPage()
}
if state.ActiveConnection() == nil {
term.DrawCommandBar(
string(state.Command), // The command that the user is typing
state.CommandCursorPosition, // The cursor position
nil, // The selected channel
"(no active connec)", // The selected team name
state.Offline, // Is the client offline?
state.Configuration,
)
} else {
term.DrawCommandBar(
string(state.Command), // The command that the user is typing
state.CommandCursorPosition, // The cursor position
state.ActiveConnection().SelectedChannel(), // The selected channel
state.ActiveConnection().Name(), // The selected team name
state.Offline, // Is the client offline?
state.Configuration,
)
}
term.DrawStatusBar(
state.Mode, // Which mode we're currently in
state.Connections, // A list of all connections
state.ActiveConnection(), // Which connection is active (to highlight the active one differently)
state.Status, // Status message to display
state.Configuration,
)
if state.SelectionInput.Visible {
// Sort items by the search command
state.SelectionInput.Needle = string(state.Command)
sort.Sort(state.SelectionInput)
if state.SelectionInput.OnResort != nil {
state.SelectionInput.OnResort(state)
}
// Render all connections and channels
// Check visibility again, because `OnResort` may have hid the fuzzy picker.
if state.SelectionInput.Visible {
term.DrawSelectionInput(
state.SelectionInput.StringItems,
state.SelectionInput.SelectedItem,
state.SelectionInput.BottomItem,
state.SelectionInput.Rank,
state.Configuration,
)
}
}
if state.Mode == "modl" {
term.DrawModal(
state.Modal.Title,
state.Modal.Body,
state.Modal.ScrollPosition,
state.Modal.Editable,
)
}
term.Render()
}