zulip/static/js/message_store.js

643 lines
23 KiB
JavaScript

var message_store = (function () {
var exports = {};
var stored_messages = {};
var load_more_enabled = true;
// If the browser hasn't scrolled away from the top of the page
// since the last time that we ran load_more_messages(), we do
// not load_more_messages().
exports.recent_private_messages = [];
exports.get = function get(message_id) {
return stored_messages[message_id];
};
exports.get_private_message_recipient = function (message, attr, fallback_attr) {
var recipient, i;
var other_recipients = _.filter(message.display_recipient,
function (element) {
return !util.is_current_user(element.email);
});
if (other_recipients.length === 0) {
// private message with oneself
return message.display_recipient[0][attr];
}
recipient = other_recipients[0][attr];
if (recipient === undefined && fallback_attr !== undefined) {
recipient = other_recipients[0][fallback_attr];
}
for (i = 1; i < other_recipients.length; i++) {
var attr_value = other_recipients[i][attr];
if (attr_value === undefined && fallback_attr !== undefined) {
attr_value = other_recipients[i][fallback_attr];
}
recipient += ', ' + attr_value;
}
return recipient;
};
exports.process_message_for_recent_private_messages = function process_message_for_recent_private_messages(message, remove_message) {
var current_timestamp = 0;
// If this conversation is already tracked, we'll replace with new timestamp,
// so remove it from the current list.
exports.recent_private_messages = _.filter(exports.recent_private_messages, function (recent_pm) {
return recent_pm.reply_to !== message.reply_to;
});
var new_conversation = {reply_to: message.reply_to,
display_reply_to: message.display_reply_to,
timestamp: Math.max(message.timestamp, current_timestamp)};
exports.recent_private_messages.push(new_conversation);
exports.recent_private_messages.sort(function (a, b) {
return b.timestamp - a.timestamp;
});
};
function set_topic_edit_properties(message) {
message.always_visible_topic_edit = false;
message.on_hover_topic_edit = false;
if (!page_params.realm_allow_message_editing) {
return;
}
// Messages with no topics should always have an edit icon visible
// to encourage updating them. Admins can also edit any topic.
if (message.subject === compose.empty_topic_placeholder()) {
message.always_visible_topic_edit = true;
} else if (page_params.is_admin) {
message.on_hover_topic_edit = true;
}
}
function add_message_metadata(message) {
var cached_msg = stored_messages[message.id];
if (cached_msg !== undefined) {
// Copy the match subject and content over if they exist on
// the new message
if (message.match_subject !== undefined) {
cached_msg.match_subject = message.match_subject;
cached_msg.match_content = message.match_content;
}
return cached_msg;
}
var involved_people;
message.sent_by_me = util.is_current_user(message.sender_email);
message.flags = message.flags || [];
message.historical = (message.flags !== undefined &&
message.flags.indexOf('historical') !== -1);
message.starred = message.flags.indexOf("starred") !== -1;
message.mentioned = message.flags.indexOf("mentioned") !== -1 ||
message.flags.indexOf("wildcard_mentioned") !== -1;
message.mentioned_me_directly = message.flags.indexOf("mentioned") !== -1;
message.collapsed = message.flags.indexOf("collapsed") !== -1;
message.alerted = message.flags.indexOf("has_alert_word") !== -1;
message.is_me_message = message.flags.indexOf("is_me_message") !== -1;
switch (message.type) {
case 'stream':
message.is_stream = true;
message.stream = message.display_recipient;
composebox_typeahead.add_topic(message.stream, message.subject);
message.reply_to = message.sender_email;
stream_data.process_message_for_recent_topics(message);
involved_people = [{'full_name': message.sender_full_name,
'user_id': message.sender_id,
'email': message.sender_email}];
set_topic_edit_properties(message);
break;
case 'private':
message.is_private = true;
message.reply_to = util.normalize_recipients(
exports.get_private_message_recipient(message, 'email'));
message.display_reply_to = exports.get_private_message_recipient(message, 'full_name', 'email');
exports.process_message_for_recent_private_messages(message);
involved_people = message.display_recipient;
break;
}
// Add new people involved in this message to the people list
_.each(involved_people, function (person) {
if (!person.unknown_local_echo_user) {
if (! people.get_by_email(person.email)) {
people.add({
email: person.email,
user_id: person.user_id || person.id,
full_name: person.full_name,
is_admin: person.is_realm_admin || false,
is_bot: person.is_bot || false
});
}
if (message.type === 'private' && message.sent_by_me) {
// Track the number of PMs we've sent to this person to improve autocomplete
people.incr_recipient_count(person.email);
}
}
});
alert_words.process_message(message);
stored_messages[message.id] = message;
return message;
}
exports.add_messages = function add_messages(messages, msg_list, opts) {
if (!messages) {
return;
}
opts = _.extend({messages_are_new: false, delay_render: false}, opts);
loading.destroy_indicator($('#page_loading_indicator'));
$('#first_run_message').remove();
msg_list.add_messages(messages, opts);
if (msg_list === home_msg_list && opts.messages_are_new) {
_.each(messages, function (message) {
if (message.local_id === undefined) {
compose.report_as_received(message);
}
});
}
};
function maybe_add_narrowed_messages(messages, msg_list, messages_are_new) {
var ids = [];
_.each(messages, function (elem) {
ids.push(elem.id);
});
channel.post({
url: '/json/messages_in_narrow',
idempotent: true,
data: {msg_ids: JSON.stringify(ids),
narrow: JSON.stringify(narrow.public_operators())},
timeout: 5000,
success: function (data) {
if (msg_list !== current_msg_list) {
// We unnarrowed in the mean time
return;
}
var new_messages = [];
var elsewhere_messages = [];
_.each(messages, function (elem) {
if (data.messages.hasOwnProperty(elem.id)) {
elem.match_subject = data.messages[elem.id].match_subject;
elem.match_content = data.messages[elem.id].match_content;
new_messages.push(elem);
} else {
elsewhere_messages.push(elem);
}
});
new_messages = _.map(new_messages, add_message_metadata);
exports.add_messages(new_messages, msg_list, {messages_are_new: messages_are_new});
unread.process_visible();
notifications.possibly_notify_new_messages_outside_viewport(new_messages);
notifications.notify_messages_outside_current_search(elsewhere_messages);
},
error: function (xhr) {
// We might want to be more clever here
setTimeout(function () {
if (msg_list === current_msg_list) {
// Don't actually try again if we unnarrowed
// while waiting
maybe_add_narrowed_messages(messages, msg_list, messages_are_new);
}
}, 5000);
}});
}
exports.update_messages = function update_messages(events) {
var msgs_to_rerender = [];
var topic_edited = false;
var changed_narrow = false;
_.each(events, function (event) {
var msg = stored_messages[event.message_id];
if (msg === undefined) {
return;
}
msgs_to_rerender.push(msg);
msg.alerted = event.flags.indexOf("has_alert_word") !== -1;
msg.mentioned = event.flags.indexOf("mentioned") !== -1 ||
event.flags.indexOf("wildcard_mentioned") !== -1;
condense.un_cache_message_content_height(msg.id);
if (event.rendered_content !== undefined) {
msg.content = event.rendered_content;
}
var row = current_msg_list.get_row(event.message_id);
if (row.length > 0) {
message_edit.end(row);
}
if (event.subject !== undefined) {
// A topic edit may affect multiple messages, listed in
// event.message_ids. event.message_id is still the first message
// where the user initiated the edit.
topic_edited = true;
var going_forward_change = _.indexOf(['change_later', 'change_all'], event.propagate_mode) >= 0;
var stream_name = stream_data.get_sub_by_id(event.stream_id).name;
var compose_stream_name = compose.stream_name();
if (going_forward_change && stream_name && compose_stream_name) {
if (stream_name.toLowerCase() === compose_stream_name.toLowerCase()) {
if (event.orig_subject === compose.subject()) {
compose.subject(event.subject);
}
}
}
if (going_forward_change) {
var current_id = current_msg_list.selected_id();
var selection_changed_topic = _.indexOf(event.message_ids, current_id) >= 0;
if (selection_changed_topic) {
var current_filter = narrow.filter();
if (current_filter && stream_name) {
if (current_filter.has_topic(stream_name, event.orig_subject)) {
var new_filter = current_filter.filter_with_new_topic(event.subject);
var operators = new_filter.operators();
var opts = {
trigger: 'topic change',
then_select_id: current_id
};
narrow.activate(operators, opts);
changed_narrow = true;
}
}
}
}
_.each(event.message_ids, function (id) {
var msg = message_store.get(id);
if (msg === undefined) {
return;
}
// Remove the recent topics entry for the old topics;
// must be called before we update msg.subject
stream_data.process_message_for_recent_topics(msg, true);
// Update the unread counts; again, this must be called
// before we update msg.subject
unread.update_unread_topics(msg, event);
msg.subject = event.subject;
msg.subject_links = event.subject_links;
set_topic_edit_properties(msg);
// Add the recent topics entry for the new topics; must
// be called after we update msg.subject
stream_data.process_message_for_recent_topics(msg);
});
}
msg.last_edit_timestamp = event.edit_timestamp;
delete msg.last_edit_timestr;
notifications.received_messages([msg]);
alert_words.process_message(msg);
});
// If a topic was edited, we re-render the whole view to get any propagated edits
// to be updated
if (topic_edited) {
if (!changed_narrow) {
home_msg_list.rerender();
if (current_msg_list === message_list.narrowed) {
message_list.narrowed.rerender();
}
}
} else {
home_msg_list.view.rerender_messages(msgs_to_rerender);
if (current_msg_list === message_list.narrowed) {
message_list.narrowed.view.rerender_messages(msgs_to_rerender);
}
}
unread.update_unread_counts();
stream_list.update_streams_sidebar();
stream_list.update_private_messages();
};
// This function could probably benefit from some refactoring
exports.do_unread_count_updates = function do_unread_count_updates(messages) {
activity.process_loaded_messages(messages);
activity.update_huddles();
unread.process_loaded_messages(messages);
unread.update_unread_counts();
resize.resize_page_components();
};
exports.insert_new_messages = function insert_new_messages(messages) {
messages = _.map(messages, add_message_metadata);
// You must add add messages to home_msg_list BEFORE
// calling unread.process_loaded_messages.
exports.add_messages(messages, home_msg_list, {messages_are_new: true});
exports.add_messages(messages, message_list.all, {messages_are_new: true});
if (narrow.active()) {
if (narrow.filter().can_apply_locally()) {
exports.add_messages(messages, message_list.narrowed, {messages_are_new: true});
notifications.possibly_notify_new_messages_outside_viewport(messages);
} else {
// if we cannot apply locally, we have to wait for this callback to happen to notify
maybe_add_narrowed_messages(messages, message_list.narrowed, true);
}
} else {
notifications.possibly_notify_new_messages_outside_viewport(messages);
}
exports.do_unread_count_updates(messages);
if (narrow.narrowed_by_reply()) {
// If you send a message when narrowed to a recipient, move the
// pointer to it.
var i;
var selected_id = current_msg_list.selected_id();
// Iterate backwards to find the last message sent_by_me, stopping at
// the pointer position.
for (i = messages.length-1; i>=0; i--) {
var id = messages[i].id;
if (id <= selected_id) {
break;
}
if (messages[i].sent_by_me && current_msg_list.get(id) !== undefined) {
// If this is a reply we just sent, advance the pointer to it.
current_msg_list.select_id(messages[i].id, {then_scroll: true,
from_scroll: true});
break;
}
}
}
unread.process_visible();
notifications.received_messages(messages);
stream_list.update_streams_sidebar();
stream_list.update_private_messages();
};
function process_result(messages, opts) {
$('#get_old_messages_error').hide();
if ((messages.length === 0) && (current_msg_list === message_list.narrowed) &&
message_list.narrowed.empty()) {
// Even after trying to load more messages, we have no
// messages to display in this narrow.
narrow.show_empty_narrow_message();
}
messages = _.map(messages, add_message_metadata);
// If we're loading more messages into the home view, save them to
// the message_list.all as well, as the home_msg_list is reconstructed
// from message_list.all.
if (opts.msg_list === home_msg_list) {
exports.do_unread_count_updates(messages);
exports.add_messages(messages, message_list.all, {messages_are_new: false});
}
if (messages.length !== 0 && !opts.cont_will_add_messages) {
exports.add_messages(messages, opts.msg_list, {messages_are_new: false});
}
stream_list.update_streams_sidebar();
stream_list.update_private_messages();
if (opts.cont !== undefined) {
opts.cont(messages);
}
}
function get_old_messages_success(data, opts) {
if (tutorial.is_running()) {
// Don't actually process the messages until the tutorial is
// finished, but do disable the loading indicator so it isn't
// distracting in the background
loading.destroy_indicator($('#page_loading_indicator'));
tutorial.defer(function () { get_old_messages_success(data, opts); });
return;
}
if (opts.msg_list.narrowed && opts.msg_list !== current_msg_list) {
// We unnarrowed before receiving new messages so
// don't bother processing the newly arrived messages.
return;
}
if (! data) {
// The server occationally returns no data during a
// restart. Ignore those responses and try again
setTimeout(function () {
exports.load_old_messages(opts);
}, 0);
return;
}
process_result(data.messages, opts);
resize.resize_bottom_whitespace();
}
exports.load_old_messages = function load_old_messages(opts) {
opts = _.extend({cont_will_add_messages: false}, opts);
var data = {anchor: opts.anchor,
num_before: opts.num_before,
num_after: opts.num_after};
if (opts.msg_list.narrowed && narrow.active()) {
var operators = narrow.public_operators();
if (page_params.narrow !== undefined) {
operators = operators.concat(page_params.narrow);
}
data.narrow = JSON.stringify(operators);
}
if (opts.msg_list === home_msg_list && page_params.narrow_stream !== undefined) {
data.narrow = JSON.stringify(page_params.narrow);
}
if (opts.use_first_unread_anchor) {
data.use_first_unread_anchor = true;
}
channel.get({
url: '/json/messages',
data: data,
idempotent: true,
success: function (data) {
get_old_messages_success(data, opts);
},
error: function (xhr, error_type, exn) {
if (opts.msg_list.narrowed && opts.msg_list !== current_msg_list) {
// We unnarrowed before getting an error so don't
// bother trying again or doing further processing.
return;
}
if (xhr.status === 400) {
// Bad request: We probably specified a narrow operator
// for a nonexistent stream or something. We shouldn't
// retry or display a connection error.
//
// FIXME: Warn the user when this has happened?
process_result([], opts);
return;
}
// We might want to be more clever here
$('#get_old_messages_error').show();
setTimeout(function () {
exports.load_old_messages(opts);
}, 5000);
}
});
};
exports.reset_load_more_status = function reset_load_more_status() {
load_more_enabled = true;
ui.have_scrolled_away_from_top = true;
ui.hide_loading_more_messages_indicator();
};
exports.load_more_messages = function load_more_messages(msg_list) {
var batch_size = 100;
var oldest_message_id;
if (!load_more_enabled) {
return;
}
ui.show_loading_more_messages_indicator();
load_more_enabled = false;
if (msg_list.first() === undefined) {
oldest_message_id = page_params.initial_pointer;
} else {
oldest_message_id = msg_list.first().id;
}
exports.load_old_messages({
anchor: oldest_message_id.toFixed(),
num_before: batch_size,
num_after: 0,
msg_list: msg_list,
cont: function (messages) {
ui.hide_loading_more_messages_indicator();
if (messages.length >= batch_size) {
load_more_enabled = true;
}
}
});
};
exports.clear = function clear() {
this.stored_messages = {};
};
util.execute_early(function () {
// get the initial message list
function load_more(messages) {
// 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.
//
// We fall back to the closest selected id, as the user may have removed
// a stream from the home before already
if (home_msg_list.selected_id() === -1 && !home_msg_list.empty()) {
home_msg_list.select_id(page_params.initial_pointer,
{then_scroll: true, use_closest: true,
target_scroll_offset: page_params.initial_offset});
}
// catch the user up
if (messages.length !== 0) {
var latest_id = messages[messages.length-1].id;
if (latest_id < page_params.max_message_id) {
exports.load_old_messages({
anchor: latest_id.toFixed(),
num_before: 0,
num_after: 400,
msg_list: home_msg_list,
cont: load_more
});
return;
}
}
server_events.home_view_loaded();
// backfill more messages after the user is idle
var backfill_batch_size = 1000;
$(document).idle({'idle': 1000*10,
'onIdle': function () {
var first_id = message_list.all.first().id;
exports.load_old_messages({
anchor: first_id,
num_before: backfill_batch_size,
num_after: 0,
msg_list: home_msg_list
});
}});
}
if (page_params.have_initial_messages) {
exports.load_old_messages({
anchor: page_params.initial_pointer,
num_before: 200,
num_after: 200,
msg_list: home_msg_list,
cont: load_more
});
} else {
server_events.home_view_loaded();
}
$(document).on('message_id_changed', function (event) {
var old_id = event.old_id, new_id = event.new_id;
if (pointer.furthest_read === old_id) {
pointer.furthest_read = new_id;
}
if (stored_messages[old_id]) {
stored_messages[new_id] = stored_messages[old_id];
delete stored_messages[old_id];
}
// This handler cannot be in the MessageList constructor, which is the logical place
// If it's there, the event handler creates a closure with a reference to the message
// list itself. When narrowing, the old narrow message list is discarded and a new one
// created, but due to the closure, the old list is not garbage collected. This also leads
// to the old list receiving the change id events, and throwing errors as it does not
// have the messages that you would expect in its internal data structures.
_.each([message_list.all, home_msg_list, message_list.narrowed], function (msg_list) {
if (msg_list !== undefined) {
msg_list.change_message_id(old_id, new_id);
if (msg_list.view !== undefined) {
msg_list.view.change_message_id(old_id, new_id);
}
}
});
});
});
return exports;
}());
if (typeof module !== 'undefined') {
module.exports = message_store;
}