mirror of https://github.com/zulip/zulip.git
799 lines
27 KiB
JavaScript
799 lines
27 KiB
JavaScript
var message_array = [];
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var message_dict = {};
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var subject_dict = {};
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var people_hash = {};
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// We only tell the server to backfill old messages
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// if we have fewer than this many messages total.
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var max_messages_for_backfill = 1000;
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var selected_message_class = 'selected_message';
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var viewport = $(window);
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var reloading_app = false;
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var selected_message_id = -1; /* to be filled in on document.ready */
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var selected_message; // = rows.get(selected_message_id)
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var get_updates_params = {
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first: -1,
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last: -1,
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pointer: -1,
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failures: 0,
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server_generation: -1, /* to be filled in on document.ready */
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reload_pending: 0,
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want_old_messages: true
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};
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$(function () {
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var i;
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var send_status = $('#send-status');
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var buttons = $('#compose').find('input[type="submit"]');
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var options = {
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dataType: 'json', // This seems to be ignored. We still get back an xhr.
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beforeSubmit: compose.validate,
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success: function (resp, statusText, xhr, form) {
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form.find('textarea').val('');
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send_status.hide();
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compose.hide();
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buttons.removeAttr('disabled');
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},
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error: function (xhr, error_type) {
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if (error_type !== 'timeout' && get_updates_params.reload_pending) {
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// The error might be due to the server changing
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do_reload_app_preserving_compose(true);
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return;
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}
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var response = "Error sending message";
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if (xhr.status.toString().charAt(0) === "4") {
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// Only display the error response for 4XX, where we've crafted
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// a nice response.
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response += ": " + $.parseJSON(xhr.responseText).msg;
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}
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send_status.removeClass(status_classes)
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.addClass('alert-error')
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.text(response)
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.append($('<span />')
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.addClass('send-status-close').html('×')
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.click(function () { send_status.stop(true).fadeOut(500); }))
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.stop(true).fadeTo(0,1);
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buttons.removeAttr('disabled');
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}
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};
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send_status.hide();
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$("#compose form").ajaxForm(options);
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$.each(people_list, function (idx, person) {
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people_hash[person.email] = 1;
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});
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});
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// The "message groups", i.e. blocks of messages collapsed by recipient.
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// Each message table has a list of lists.
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var message_groups = {
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zhome: [],
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zfilt: []
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};
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// Why do we look at the 'bottom' in above_view_threshold and the top
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// in below_view_threshold as opposed to vice versa? Mostly to handle
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// the case of gigantic messages. Imagine the case of a selected
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// message that's so big that it takes up an two entire screens. The
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// selector shouldn't move away from it until after the *bottom* of
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// the message has gone too high up on the screen. (Otherwise we'd
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// move the pointer right after part of the first screenful.)
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function above_view_threshold(message, useTop) {
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// Barnowl-style thresholds: the bottom of the pointer is never
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// above the 1/5 mark.
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// (if useTop = true, we look at the top of the pointer instead)
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var position = message.offset().top;
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if (!useTop) {
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position += message.outerHeight(true);
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}
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return position < viewport.scrollTop() + viewport.height() / 5;
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}
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function below_view_threshold(message) {
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// Barnowl-style thresholds: the top of the pointer is never below
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// the 2/3-mark.
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return message.offset().top > viewport.scrollTop() + viewport.height() * 2 / 3;
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}
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function recenter_view(message) {
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// Barnowl-style recentering: if the pointer is too high, center
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// in the middle of the screen. If the pointer is too low, center
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// on the 1/5-mark.
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// If this logic changes, above_view_threshold andd
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// below_view_threshold must also change.
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if (above_view_threshold(message, true)) {
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// We specifically say useTop=true here, because suppose you're using
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// the arrow keys to arrow up and you've moved up to a huge message.
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// The message is so big that the bottom part of makes it not
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// "above the view threshold". But since we're using the arrow keys
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// to get here, the reason we selected this message is because
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// we want to read it; so here we care about the top part.
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viewport.scrollTop(selected_message.offset().top - viewport.height() / 2);
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} else if (below_view_threshold(message)) {
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viewport.scrollTop(selected_message.offset().top - viewport.height() / 5);
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}
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}
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function scroll_to_selected() {
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if (selected_message && (selected_message.length !== 0))
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recenter_view(selected_message);
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}
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function get_huddle_recipient(message) {
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var recipient, i;
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var other_recipients = $.grep(message.display_recipient,
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function (element, index) {
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return element.email !== email;
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});
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if (other_recipients.length === 0) {
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// huddle with oneself
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return message.display_recipient[0].email;
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}
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recipient = other_recipients[0].email;
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for (i = 1; i < other_recipients.length; i++) {
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recipient += ', ' + other_recipients[i].email;
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}
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return recipient;
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}
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function get_huddle_recipient_names(message) {
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var recipient, i;
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var other_recipients = $.grep(message.display_recipient,
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function (element, index) {
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return element.email !== email;
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});
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if (other_recipients.length === 0) {
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// huddle with oneself
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return message.display_recipient[0].full_name;
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}
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recipient = other_recipients[0].full_name;
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for (i = 1; i < other_recipients.length; i++) {
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recipient += ', ' + other_recipients[i].full_name;
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}
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return recipient;
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}
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function respond_to_message(reply_type) {
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var message, msg_type;
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message = message_dict[selected_message_id];
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var stream = '';
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var subject = '';
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if (message.type === "stream") {
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stream = message.display_recipient;
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subject = message.subject;
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}
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var huddle_recipient = message.reply_to;
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if (reply_type === "personal" && message.type === "huddle") {
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// reply_to for huddle messages is the whole huddle, so for
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// personals replies we need to set the the huddle recipient
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// to just the sender
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huddle_recipient = message.sender_email;
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}
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msg_type = reply_type;
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if (msg_type === undefined) {
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msg_type = message.type;
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}
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if (msg_type === "huddle") {
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// Huddle messages use the personals compose box
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msg_type = "personal";
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}
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compose.start(msg_type, {'stream': stream, 'subject': subject,
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'huddle_recipient': huddle_recipient});
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}
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// Called by mouseover etc.
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function select_message_by_id(message_id, opts) {
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opts = $.extend({}, {then_scroll: false, update_server: true}, opts);
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if (message_id === selected_message_id && ! opts.then_scroll) {
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// We are already successful without doing anything!
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return true;
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}
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return select_message(rows.get(message_id), opts);
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}
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var last_message_id_sent = -1;
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var message_id_to_send = -1;
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// We only send pointer updates every second to avoid hammering the
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// server
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function send_pointer_update() {
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if (message_id_to_send !== last_message_id_sent) {
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$.post("json/update_pointer", {pointer: message_id_to_send});
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last_message_id_sent = message_id_to_send;
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}
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setTimeout(send_pointer_update, 1000);
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}
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$(setTimeout(send_pointer_update, 1000));
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function update_selected_message(message, opts) {
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opts = $.extend({}, {update_server: true}, opts);
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$('.' + selected_message_class).removeClass(selected_message_class);
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message.addClass(selected_message_class);
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var new_selected_id = rows.id(message);
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if (opts.update_server && !narrow.active()
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&& new_selected_id !== message_id_to_send)
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{
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// Narrowing is a temporary view on top of the home view and
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// doesn't permanently affect where you are.
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//
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// We also don't want to post if there's no effective change.
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message_id_to_send = new_selected_id;
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}
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selected_message_id = new_selected_id;
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selected_message = message;
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}
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function select_message(next_message, opts) {
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opts = $.extend({}, {then_scroll: false, update_server: true}, opts);
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/* If the message exists but is hidden, try to find the next visible one. */
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if (next_message.is(':hidden')) {
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next_message = rows.next_visible(next_message);
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}
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/* Fall back to the last visible message. */
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if (next_message.length === 0) {
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next_message = rows.last_visible();
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if (next_message.length === 0) {
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// There are no messages!
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return false;
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}
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}
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update_selected_message(next_message, opts);
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if (opts.then_scroll) {
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recenter_view(next_message);
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}
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return true;
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}
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function same_recipient(a, b) {
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if ((a === undefined) || (b === undefined))
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return false;
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if (a.type !== b.type)
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return false;
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switch (a.type) {
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case 'huddle':
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return a.recipient_id === b.recipient_id;
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case 'personal':
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return a.reply_to === b.reply_to;
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case 'stream':
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return (a.recipient_id === b.recipient_id) &&
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(a.subject === b.subject);
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}
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// should never get here
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return false;
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}
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function same_sender(a, b) {
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return ((a !== undefined) && (b !== undefined) &&
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(a.sender_email === b.sender_email));
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}
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function clear_table(table_name) {
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$('#' + table_name).empty();
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message_groups[table_name] = [];
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}
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function add_display_time(message, prev) {
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var two_digits = function (x) { return ('0' + x).slice(-2); };
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var time = new XDate(message.timestamp * 1000);
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var include_date = message.include_recipient;
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if (prev !== undefined) {
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var prev_time = new XDate(prev.timestamp * 1000);
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if (time.toDateString() !== prev_time.toDateString()) {
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include_date = true;
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}
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}
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if (include_date) {
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message.timestr = time.toString("MMM dd") + " " +
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time.toString("HH:mm");
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} else {
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message.timestr = time.toString("HH:mm");
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}
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message.full_date_str = time.toLocaleString();
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}
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function add_to_table(messages, table_name, filter_function, where) {
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if (messages.length === 0)
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return;
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var table = $('#' + table_name);
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var messages_to_render = [];
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var ids_where_next_is_same_sender = [];
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var prev;
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var current_group = [];
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var new_message_groups = [];
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if (where === 'top') {
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// Assumption: We never get a 'top' update as the first update.
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// Delete the current top message group, and add it back in with these
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// messages, in order to collapse properly.
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//
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// This means we redraw the entire view on each update when narrowed by
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// subject, which could be a problem down the line. For now we hope
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// that subject views will not be very big.
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var top_group = message_groups[table_name][0];
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var top_messages = [];
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$.each(top_group, function (index, id) {
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rows.get(id, table_name).remove();
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top_messages.push(message_dict[id]);
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});
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messages = messages.concat(top_messages);
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// Delete the leftover recipient label.
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table.find('.recipient_row:first').remove();
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} else {
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prev = message_dict[table.find('tr:last-child').attr('zid')];
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}
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$.each(messages, function (index, message) {
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if (! filter_function(message))
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return;
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message.include_recipient = false;
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message.include_bookend = false;
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if (same_recipient(prev, message)) {
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current_group.push(message.id);
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} else {
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if (current_group.length > 0)
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new_message_groups.push(current_group);
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current_group = [message.id];
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// Add a space to the table, but not for the first element.
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message.include_recipient = true;
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message.include_bookend = (prev !== undefined);
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}
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message.include_sender = true;
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if (!message.include_recipient &&
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same_sender(prev, message) &&
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(Math.abs(message.timestamp - prev.timestamp) < 60*10)) {
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message.include_sender = false;
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ids_where_next_is_same_sender.push(prev.id);
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}
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add_display_time(message, prev);
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message.dom_id = table_name + message.id;
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messages_to_render.push(message);
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prev = message;
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});
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if (current_group.length > 0)
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new_message_groups.push(current_group);
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if (where === 'top') {
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message_groups[table_name] = new_message_groups.concat(message_groups[table_name]);
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} else {
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message_groups[table_name] = message_groups[table_name].concat(new_message_groups);
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}
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var rendered = templates.message({
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messages: messages_to_render,
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include_layout_row: (table.find('tr:first').length === 0)
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});
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if (where === 'top') {
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table.find('.ztable_layout_row').after(rendered);
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} else {
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table.append(rendered);
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}
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$.each(messages_to_render, function (index, message) {
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var row = rows.get(message.id, table_name);
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register_onclick(row, message.id);
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row.find('.message_content a').each(function (index, link) {
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link = $(link);
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link.attr('target', '_blank')
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.attr('title', link.attr('href'))
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.attr('onclick', 'event.cancelBubble = true;'); // would a closure work here?
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});
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});
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$.each(ids_where_next_is_same_sender, function (index, id) {
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rows.get(id, table_name).find('.messagebox').addClass("next_is_same_sender");
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});
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}
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function add_message_metadata(dummy, message) {
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if (get_updates_params.first === -1) {
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get_updates_params.first = message.id;
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} else {
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get_updates_params.first = Math.min(get_updates_params.first, message.id);
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}
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get_updates_params.last = Math.max(get_updates_params.last, message.id);
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var involved_people;
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switch (message.type) {
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case 'stream':
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message.is_stream = true;
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if (! subject_dict.hasOwnProperty(message.display_recipient)) {
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subject_dict[message.display_recipient] = [];
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}
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if ($.inArray(message.subject, subject_dict[message.display_recipient]) === -1) {
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subject_dict[message.display_recipient].push(message.subject);
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subject_dict[message.display_recipient].sort();
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// We don't need to update the autocomplete after this because
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// the subject box's source is a function
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}
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message.reply_to = message.sender_email;
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involved_people = [{'full_name': message.sender_full_name,
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'email': message.sender_email}];
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break;
|
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|
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case 'huddle':
|
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message.is_huddle = true;
|
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message.reply_to = get_huddle_recipient(message);
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message.display_reply_to = get_huddle_recipient_names(message);
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involved_people = message.display_recipient;
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break;
|
|
|
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case 'personal':
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message.is_personal = true;
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|
|
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if (message.sender_email === email) { // that is, we sent the original message
|
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message.reply_to = message.display_recipient.email;
|
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message.display_reply_to = message.display_recipient.full_name;
|
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} else {
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message.reply_to = message.sender_email;
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message.display_reply_to = message.sender_full_name;
|
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}
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|
|
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involved_people = [message.display_recipient,
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{'email': message.sender_email,
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'full_name': message.sender_full_name}];
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|
|
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break;
|
|
}
|
|
|
|
// Add new people involved in this message to the people list
|
|
$.each(involved_people, function (idx, person) {
|
|
// Do the hasOwnProperty() call via the prototype to avoid problems
|
|
// with keys like "hasOwnProperty"
|
|
if (! Object.prototype.hasOwnProperty.call(people_hash, person.email)) {
|
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people_hash[person.email] = 1;
|
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people_list.push(person);
|
|
autocomplete_needs_update = true;
|
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}
|
|
});
|
|
|
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message_dict[message.id] = message;
|
|
}
|
|
|
|
function add_messages(data) {
|
|
if (!data || !data.messages)
|
|
return;
|
|
|
|
if (loading_spinner) {
|
|
loading_spinner.stop();
|
|
$('#loading_indicator').hide();
|
|
loading_spinner = undefined;
|
|
|
|
$('#load_more').show();
|
|
}
|
|
|
|
$.each(data.messages, add_message_metadata);
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|
|
|
if (data.where === 'top') {
|
|
message_array = data.messages.concat(message_array);
|
|
} else {
|
|
message_array = message_array.concat(data.messages);
|
|
}
|
|
|
|
if (narrow.active())
|
|
add_to_table(data.messages, 'zfilt', narrow.predicate(), data.where);
|
|
|
|
// Even when narrowed, add messages to the home view so they exist when we un-narrow.
|
|
add_to_table(data.messages, 'zhome', function () { return true; }, data.where);
|
|
|
|
// If we received the initially selected message, select it on the client side,
|
|
// but not if the user has already selected another one during load.
|
|
if ((selected_message_id === -1) && (message_dict.hasOwnProperty(initial_pointer))) {
|
|
select_message_by_id(initial_pointer,
|
|
{then_scroll: true, update_server: false});
|
|
}
|
|
|
|
// If we prepended messages, then we need to scroll back to the pointer.
|
|
// This will mess with the user's scrollwheel use; possibly we should be
|
|
// more clever here. However (for now) we only prepend on page load,
|
|
// so maybe it's okay.
|
|
//
|
|
// We also need to re-select the message by ID, because we might have
|
|
// removed and re-added the row as part of prepend collapsing.
|
|
if ((data.where === 'top') && (selected_message_id >= 0)) {
|
|
select_message_by_id(selected_message_id,
|
|
{then_scroll: true, update_server: false});
|
|
}
|
|
|
|
if (autocomplete_needs_update)
|
|
update_autocomplete();
|
|
}
|
|
|
|
function do_reload_app() {
|
|
// TODO: We need a better API for showing messages.
|
|
report_message("The application has been updated; reloading!", $("#reloading-application"));
|
|
reloading_app = true;
|
|
window.location.reload(true);
|
|
}
|
|
|
|
function start_reload_app() {
|
|
if (get_updates_params.reload_pending) {
|
|
return;
|
|
}
|
|
get_updates_params.reload_pending = 1;
|
|
|
|
// Always reload after 30 minutes
|
|
setTimeout(function () { do_reload_app_preserving_compose(false); },
|
|
1000 * 60 * 30);
|
|
|
|
// If the user is composing a message, reload if they become
|
|
// idle while composing. If they finish composing, the
|
|
// submit code will reload the app. If they cancel the
|
|
// compose, wait until they're idle again
|
|
|
|
// If the user is not composing, reload if the user becomes idle.
|
|
// If they start composing, postpone reloading
|
|
|
|
var idle_control;
|
|
var composing_timeout = 1000*60*10;
|
|
var home_timeout = 1000*60;
|
|
var compose_canceled_handler, compose_started_handler;
|
|
|
|
compose_canceled_handler = function () {
|
|
idle_control.cancel();
|
|
idle_control = $(document).idle({'idle': home_timeout,
|
|
'onIdle': do_reload_app});
|
|
$(document).one('compose_started.zephyr', compose_started_handler);
|
|
};
|
|
compose_started_handler = function () {
|
|
idle_control.cancel();
|
|
idle_control = $(document).idle({'idle': composing_timeout,
|
|
'onIdle': do_reload_app_preserving_compose});
|
|
$(document).one('compose_canceled.zephyr', compose_canceled_handler);
|
|
};
|
|
|
|
if (compose.composing()) {
|
|
idle_control = $(document).idle({'idle': composing_timeout,
|
|
'onIdle': do_reload_app_preserving_compose});
|
|
$(document).one('compose_canceled.zephyr', compose_canceled_handler);
|
|
} else {
|
|
idle_control = $(document).idle({'idle': home_timeout,
|
|
'onIdle': do_reload_app});
|
|
$(document).one('compose_started.zephyr', compose_started_handler);
|
|
}
|
|
}
|
|
|
|
function do_reload_app_preserving_compose(send_after_reload) {
|
|
var url = "#reload:send_after_reload=" + Number(send_after_reload);
|
|
if (compose.composing() === 'stream') {
|
|
url += "+msg_type=stream";
|
|
url += "+stream=" + encodeURIComponent(compose.stream_name());
|
|
url += "+subject=" + encodeURIComponent(compose.subject());
|
|
} else {
|
|
url += "+msg_type=huddle";
|
|
url += "+recipient=" + encodeURIComponent(compose.recipient());
|
|
}
|
|
url += "+msg="+ encodeURIComponent(compose.message_content());
|
|
|
|
window.location.replace(url);
|
|
do_reload_app();
|
|
}
|
|
|
|
// Check if we're doing a compose-preserving reload. This must be
|
|
// done before the first call to get_updates
|
|
$(function () {
|
|
var location = window.location.toString();
|
|
window.location = '#';
|
|
var fragment = location.substring(location.indexOf('#') + 1);
|
|
if (fragment.search("reload:") !== 0) {
|
|
return;
|
|
}
|
|
|
|
fragment = fragment.replace(/^reload:/, "");
|
|
var keyvals = fragment.split("+");
|
|
var vars = {};
|
|
$.each(keyvals, function (idx, str) {
|
|
var pair = str.split("=");
|
|
vars[pair[0]] = decodeURIComponent(pair[1]);
|
|
});
|
|
|
|
var tab;
|
|
var send_now = parseInt(vars.send_after_reload, 10);
|
|
|
|
// TODO: preserve focus
|
|
compose.start(vars.msg_type, {stream: vars.stream,
|
|
subject: vars.subject,
|
|
huddle_recipient: vars.recipient,
|
|
message: vars.msg});
|
|
if (send_now) {
|
|
$("#compose form").ajaxSubmit();
|
|
}
|
|
});
|
|
|
|
var get_updates_xhr;
|
|
var get_updates_timeout;
|
|
function get_updates() {
|
|
get_updates_params.want_old_messages = (message_array.length < max_messages_for_backfill);
|
|
get_updates_params.pointer = selected_message_id;
|
|
|
|
get_updates_xhr = $.ajax({
|
|
type: 'POST',
|
|
url: '/json/get_updates',
|
|
data: get_updates_params,
|
|
dataType: 'json',
|
|
timeout: 55*1000, // 55 seconds in ms -- needs to be under a
|
|
// minute to deal with crappy home wireless
|
|
// routers that kill "inactive" http connections.
|
|
success: function (data) {
|
|
if (! data) {
|
|
// The server occationally returns no data during a
|
|
// restart. Ignore those responses so the page keeps
|
|
// working
|
|
get_updates_timeout = setTimeout(get_updates, 0);
|
|
return;
|
|
}
|
|
|
|
get_updates_params.failures = 0;
|
|
$('#connection-error').hide();
|
|
|
|
if (get_updates_params.server_generation === -1) {
|
|
get_updates_params.server_generation = data.server_generation;
|
|
} else if (data.server_generation !== get_updates_params.server_generation) {
|
|
start_reload_app();
|
|
}
|
|
|
|
if (data.messages.length === 0) {
|
|
if (data.reason_empty === 'no_old_messages') {
|
|
$('#load_more').hide();
|
|
|
|
// Don't ask for more old messages in the future.
|
|
max_messages_for_backfill = 0;
|
|
}
|
|
} else {
|
|
add_messages(data);
|
|
}
|
|
|
|
if (data.new_pointer !== undefined
|
|
&& data.new_pointer !== selected_message_id)
|
|
{
|
|
select_message_by_id(data.new_pointer,
|
|
{then_scroll: true, update_server: false});
|
|
}
|
|
|
|
get_updates_timeout = setTimeout(get_updates, 0);
|
|
},
|
|
error: function (xhr, error_type, exn) {
|
|
if (error_type === 'timeout') {
|
|
// Retry indefinitely on timeout.
|
|
get_updates_params.failures = 0;
|
|
$('#connection-error').hide();
|
|
} else {
|
|
get_updates_params.failures += 1;
|
|
}
|
|
|
|
if (get_updates_params.failures >= 5) {
|
|
$('#connection-error').show();
|
|
} else {
|
|
$('#connection-error').hide();
|
|
}
|
|
|
|
var retry_sec = Math.min(90, Math.exp(get_updates_params.failures/2));
|
|
get_updates_timeout = setTimeout(get_updates, retry_sec*1000);
|
|
}
|
|
});
|
|
}
|
|
|
|
$(get_updates);
|
|
|
|
function restart_get_updates() {
|
|
if (get_updates_xhr !== undefined)
|
|
get_updates_xhr.abort();
|
|
|
|
if (get_updates_timeout !== undefined)
|
|
clearTimeout(get_updates_timeout);
|
|
|
|
get_updates();
|
|
}
|
|
|
|
function load_more_messages() {
|
|
max_messages_for_backfill += 400;
|
|
restart_get_updates();
|
|
}
|
|
|
|
var watchdog_time = $.now();
|
|
setInterval(function() {
|
|
var new_time = $.now();
|
|
if ((new_time - watchdog_time) > 20000) { // 20 seconds.
|
|
// Our app's JS wasn't running (the machine was probably
|
|
// asleep). Now that we're running again, immediately poll for
|
|
// new updates.
|
|
get_updates_params.failures = 0;
|
|
restart_get_updates();
|
|
}
|
|
watchdog_time = new_time;
|
|
}, 5000);
|
|
|
|
function at_top_of_viewport() {
|
|
return (viewport.scrollTop() === 0);
|
|
}
|
|
|
|
function at_bottom_of_viewport() {
|
|
return (viewport.scrollTop() + viewport.height() >= $("#main_div").outerHeight(true));
|
|
}
|
|
|
|
function keep_pointer_in_view() {
|
|
var candidate;
|
|
var next_message = rows.get(selected_message_id);
|
|
if (next_message.length === 0)
|
|
return;
|
|
|
|
if (above_view_threshold(next_message) && (!at_top_of_viewport())) {
|
|
while (above_view_threshold(next_message)) {
|
|
candidate = rows.next_visible(next_message);
|
|
if (candidate.length === 0) {
|
|
break;
|
|
} else {
|
|
next_message = candidate;
|
|
}
|
|
}
|
|
} else if (below_view_threshold(next_message) && (!at_bottom_of_viewport())) {
|
|
while (below_view_threshold(next_message)) {
|
|
candidate = rows.prev_visible(next_message);
|
|
if (candidate.length === 0) {
|
|
break;
|
|
} else {
|
|
next_message = candidate;
|
|
}
|
|
}
|
|
}
|
|
update_selected_message(next_message, {update_server: true});
|
|
}
|
|
|
|
// The idea here is when you've scrolled to the very
|
|
// bottom of the page, e.g., the scroll handler isn't
|
|
// going to fire anymore. But if I continue to use
|
|
// the scrollwheel, the selection should advance until
|
|
// I'm at the very top or the very bottom of the page.
|
|
function move_pointer_at_page_top_and_bottom(delta) {
|
|
if (delta !== 0 && (at_top_of_viewport() || at_bottom_of_viewport())) {
|
|
var next_message = rows.get(selected_message_id);
|
|
if (delta > 0) {
|
|
// Scrolling up (want older messages)
|
|
next_message = rows.prev_visible(next_message);
|
|
} else {
|
|
// We're scrolling down (we want more recent messages)
|
|
next_message = rows.next_visible(next_message);
|
|
}
|
|
if (next_message.length !== 0) {
|
|
update_selected_message(next_message);
|
|
}
|
|
}
|
|
}
|