chatview.js

"use strict"

/* Constants used at several places */
// scrollDetectionThresh represents the number of pixels a user can scroll
// without disabling the automatic go-back-to-bottom when a new message is
// received
const scrollDetectionThresh = 70
// printHistoryPart loads blocks of messages. Each block contains
// scrollBuffer messages
const scrollBuffer = 20
// The first time a conversation is loaded, the lazy loading system makes
// sure at least initialScrollBufferFactor screens of messages are loaded
const initialScrollBufferFactor = 3
// Some signal like the onscrolled signals are debounced so that the their
// assigned function isn't fired too often
const debounceTime = 200

/* Buffers */
// current index in the history buffer
var historyBufferIndex = 0
// buffer containing the conversation's messages
var historyBuffer = []

// If we use qt
var use_qt = false

if (navigator.userAgent == "jami-windows") {
    use_qt = true
}

/* We retrieve refs to the most used navbar and message bar elements for efficiency purposes */
/* NOTE: use getElementById when possible (more readable and efficient) */
const addToConversationsButton = document.getElementById("addToConversationsButton")
const placeAudioCallButton = document.getElementById("placeAudioCallButton")
const backButton = document.getElementById("backButton")
const placeCallButton = document.getElementById("placeCallButton")
const unbanButton = document.getElementById("unbanButton")
const acceptButton = document.getElementById("acceptButton")
const refuseButton = document.getElementById("refuseButton")
const blockButton = document.getElementById("blockButton")
const callButtons = document.getElementById("callButtons")
const sendButton = document.getElementById("sendButton")
const optionsButton = document.getElementById("optionsButton")
const backToBottomBtn = document.getElementById("back_to_bottom_button")
const backToBottomBtnContainer = document.getElementById("back_to_bottom_button_container")
const sendFileButton = document.getElementById("sendFileButton")
const videoRecordButton = document.getElementById("videoRecordButton")
const audioRecordButton = document.getElementById("audioRecordButton")
const aliasField = document.getElementById("nav-contactid-alias")
const bestIdField = document.getElementById("nav-contactid-bestId")
const idField = document.getElementById("nav-contactid")
const messageBar = document.getElementById("sendMessage")
const messageBarInput = document.getElementById("message")
const addToConvButton = document.getElementById("addToConversationsButton")
const invitation = document.getElementById("invitation")
const inviteImage = document.getElementById("invite_image")
const navbar = document.getElementById("navbar")
const invitationText = document.getElementById("text")
var   messages = document.getElementById("messages")
var   sendContainer = document.getElementById("data_transfer_send_container")
var   wrapperOfNavbar = document.getElementById("wrapperOfNavbar")

/* States: allows us to avoid re-doing something if it isn't meaningful */
var displayLinksEnabled = true
var hoverBackButtonAllowed = true
var hasInvitation = false
var isTemporary = false
var isBanned = false
var isAccountEnabled = true
var isInitialLoading = false