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https://github.com/zulip/zulip.git
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14daa08726
There still seems to be some glitching when arrowing around, which still needs some investigation. (imported from commit 9c4d8f2b0b55fda5077e2fba70cbe4bcd50b823a)
485 lines
15 KiB
JavaScript
485 lines
15 KiB
JavaScript
var zephyr_array = [];
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var zephyr_dict = {};
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var instance_list = [];
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$(function () {
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var send_status = $('#send-status');
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var buttons = $('#class-message, #personal-message').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: validate_message,
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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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hide_compose();
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buttons.removeAttr('disabled');
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},
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error: function (xhr) {
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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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$("#class-message form").ajaxForm(options);
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$("#personal-message form").ajaxForm(options);
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});
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var selected_zephyr_id = -1; /* to be filled in on document.ready */
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var selected_zephyr; // = get_zephyr_row(selected_zephyr_id)
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var received = {
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first: -1,
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last: -1,
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failures: 0
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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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function scroll_to_selected() {
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var viewport = $(window);
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viewport.scrollTop(0);
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viewport.scrollTop(selected_zephyr.offset().top - viewport.height()/1.5);
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}
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function get_huddle_recipient(zephyr) {
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var recipient, i;
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recipient = zephyr.display_recipient[0].email;
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for (i = 1; i < zephyr.display_recipient.length; i++) {
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recipient += ', ' + zephyr.display_recipient[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(zephyr) {
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var recipient, i;
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recipient = zephyr.display_recipient[0].name;
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for (i = 1; i < zephyr.display_recipient.length; i++) {
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recipient += ', ' + zephyr.display_recipient[i].name;
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}
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return recipient;
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}
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function respond_to_zephyr() {
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var zephyr, recipient, recipients;
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zephyr = zephyr_dict[selected_zephyr_id];
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switch (zephyr.type) {
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case 'class':
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$('#zephyr-type-tabs a[href="#class-message"]').tab('show');
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$("#class").val(zephyr.display_recipient);
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$("#instance").val(zephyr.instance);
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show_compose('class', $("#new_zephyr"));
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break;
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case 'huddle':
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$('#zephyr-type-tabs a[href="#personal-message"]').tab('show');
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prepare_huddle(zephyr.reply_to);
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break;
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case 'personal':
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// Until we allow sending zephyrs based on multiple meaningful
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// representations of a user (name, username, email, etc.), just
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// deal with emails.
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recipient = zephyr.display_recipient;
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if (recipient === email) { // that is, we sent the original message
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recipient = zephyr.sender_email;
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}
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prepare_huddle(recipient);
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break;
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}
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}
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// Called by mouseover etc.
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function select_zephyr_by_id(zephyr_id) {
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if (zephyr_id === selected_zephyr_id) {
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return;
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}
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select_zephyr(get_zephyr_row(zephyr_id), false);
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}
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// Called on page load and when we [un]narrow.
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// Forces a call to select_zephyr even if the id has not changed,
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// because the visible table might have.
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function select_and_show_by_id(zephyr_id) {
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select_zephyr(get_zephyr_row(zephyr_id), true);
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}
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function update_selected_zephyr(zephyr) {
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$('.selected_zephyr').removeClass('selected_zephyr');
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zephyr.addClass('selected_zephyr');
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var new_selected_id = get_id(zephyr);
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if (!narrowed && new_selected_id !== selected_zephyr_id) {
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// Narrowing is a temporary view on top of the home view and
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// doesn't permanently affect where you are.
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//
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// We also don't want to post if there's no effective change.
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$.post("update", {pointer: new_selected_id});
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}
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selected_zephyr_id = new_selected_id;
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selected_zephyr = zephyr;
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}
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function select_zephyr(next_zephyr, scroll_to) {
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var viewport = $(window);
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/* If the zephyr exists but is hidden, try to find the next visible one. */
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if (next_zephyr.length !== 0 && next_zephyr.is(':hidden')) {
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next_zephyr = get_next_visible(next_zephyr);
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}
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/* Fall back to the first visible zephyr. */
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if (next_zephyr.length === 0) {
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next_zephyr = $('tr:not(:hidden):first');
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}
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if (next_zephyr.length === 0) {
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// There are no zephyrs!
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return false;
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}
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update_selected_zephyr(next_zephyr);
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if (scroll_to &&
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((next_zephyr.offset().top < viewport.scrollTop()) ||
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(next_zephyr.offset().top + next_zephyr.outerHeight(true) >
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viewport.scrollTop() + viewport.height()))) {
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scroll_to_selected();
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}
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}
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function prepare_huddle(recipients) {
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// Used for both personals and huddles.
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show_compose('personal', $("#new_personal_zephyr"));
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$("#recipient").val(recipients);
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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 'class':
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return (a.recipient_id === b.recipient_id) &&
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(a.instance === b.instance);
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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_to_table(zephyrs, table_name, filter_function, where) {
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if (zephyrs.length === 0)
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return;
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var table = $('#' + table_name);
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var zephyrs_to_render = [];
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var ids_where_next_is_same_sender = [];
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var prev;
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var current_group = [];
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var new_message_groups = [];
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if (where === 'top') {
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// Assumption: We never get a 'top' update as the first update.
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// Delete the current top message group, and add it back in with these
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// messages, in order to collapse properly.
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//
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// This means we redraw the entire view on each update when narrowed by
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// instance, which could be a problem down the line. For now we hope
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// that instance views will not be very big.
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var top_group = message_groups[table_name][0];
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var top_messages = [];
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$.each(top_group, function (index, id) {
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get_zephyr_row(id, table_name).remove();
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top_messages.push(zephyr_dict[id]);
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});
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zephyrs = zephyrs.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 = zephyr_dict[table.find('tr:last-child').attr('zid')];
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}
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$.each(zephyrs, function (index, zephyr) {
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if (! filter_function(zephyr))
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return;
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zephyr.content = linkify(zephyr.content, {
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callback: function (text, href) {
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return href ? '<a href="' + href + '" target="_blank" title="' +
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href + '" onclick="event.cancelBubble = true;"">' + text + '</a>' : text;
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}
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});
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zephyr.include_recipient = false;
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zephyr.include_bookend = false;
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if (same_recipient(prev, zephyr)) {
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current_group.push(zephyr.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 = [zephyr.id];
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// Add a space to the table, but not for the first element.
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zephyr.include_recipient = true;
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zephyr.include_bookend = (prev !== undefined);
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}
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zephyr.include_sender = true;
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if (same_sender(prev, zephyr) && !zephyr.include_recipient) {
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zephyr.include_sender = false;
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ids_where_next_is_same_sender.push(prev.id);
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}
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zephyr.dom_id = table_name + zephyr.id;
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zephyrs_to_render.push(zephyr);
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prev = zephyr;
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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.zephyr({
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zephyrs: zephyrs_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(zephyrs_to_render, function (index, zephyr) {
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var row = get_zephyr_row(zephyr.id);
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register_huddle_onclick(row, zephyr.sender_email);
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register_onclick(row, zephyr.id);
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});
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$.each(ids_where_next_is_same_sender, function (index, id) {
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get_zephyr_row(id).find('.messagebox').addClass("next_is_same_sender");
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});
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}
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function add_zephyr_metadata(dummy, zephyr) {
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if (received.first === -1) {
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received.first = zephyr.id;
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} else {
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received.first = Math.min(received.first, zephyr.id);
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}
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received.last = Math.max(received.last, zephyr.id);
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switch (zephyr.type) {
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case 'class':
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zephyr.is_class = true;
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if ($.inArray(zephyr.display_recipient.toLowerCase(), class_list) === -1) {
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class_list.push(zephyr.display_recipient.toLowerCase());
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autocomplete_needs_update = true;
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}
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if ($.inArray(zephyr.instance, instance_list) === -1) {
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instance_list.push(zephyr.instance);
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autocomplete_needs_update = true;
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}
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break;
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case 'huddle':
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zephyr.is_huddle = true;
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zephyr.reply_to = get_huddle_recipient(zephyr);
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zephyr.display_reply_to = get_huddle_recipient_names(zephyr);
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break;
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case 'personal':
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zephyr.is_personal = true;
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if (zephyr.display_recipient === email) { // that is, we sent the original message
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zephyr.reply_to = zephyr.sender_email;
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} else {
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zephyr.reply_to = zephyr.display_recipient;
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}
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zephyr.display_reply_to = zephyr.reply_to;
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if (zephyr.reply_to !== email &&
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$.inArray(zephyr.reply_to, people_list) === -1) {
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people_list.push(zephyr.reply_to);
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autocomplete_needs_update = true;
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}
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break;
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}
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var time = new Date(zephyr.timestamp * 1000);
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var two_digits = function (x) { return ('0' + x).slice(-2); };
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zephyr.timestr = two_digits(time.getHours())
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+ ':' + two_digits(time.getMinutes());
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zephyr.full_date_str = time.toLocaleString();
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zephyr_dict[zephyr.id] = zephyr;
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}
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function add_messages(data) {
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if (!data || !data.messages)
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return;
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$.each(data.messages, add_zephyr_metadata);
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if (loading_spinner) {
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loading_spinner.stop();
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$('#loading_indicator').hide();
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loading_spinner = undefined;
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}
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if (data.where === 'top') {
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zephyr_array = data.messages.concat(zephyr_array);
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} else {
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zephyr_array = zephyr_array.concat(data.messages);
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}
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if (narrowed)
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add_to_table(data.messages, 'zfilt', narrowed, data.where);
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// Even when narrowed, add messages to the home view so they exist when we un-narrow.
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add_to_table(data.messages, 'zhome', function () { return true; }, data.where);
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// If we received the initially selected message, select it on the client side,
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// but not if the user has already selected another one during load.
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if ((selected_zephyr_id === -1) && (zephyr_dict.hasOwnProperty(initial_pointer))) {
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select_and_show_by_id(initial_pointer);
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}
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// If we prepended messages, then we need to scroll back to the pointer.
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// This will mess with the user's scrollwheel use; possibly we should be
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// more clever here. However (for now) we only prepend on page load,
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// so maybe it's okay.
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//
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// We also need to re-select the message by ID, because we might have
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// removed and re-added the row as part of prepend collapsing.
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if ((data.where === 'top') && (selected_zephyr_id >= 0)) {
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select_and_show_by_id(selected_zephyr_id);
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}
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if (autocomplete_needs_update)
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update_autocomplete();
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}
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function get_updates() {
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$.ajax({
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type: 'POST',
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url: 'get_updates',
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data: received,
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dataType: 'json',
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timeout: 10*60*1000, // 10 minutes in ms
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success: function (data) {
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received.failures = 0;
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$('#connection-error').hide();
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add_messages(data);
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setTimeout(get_updates, 0);
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},
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error: function (xhr, error_type, exn) {
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if (error_type === 'timeout') {
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// Retry indefinitely on timeout.
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received.failures = 0;
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$('#connection-error').hide();
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} else {
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received.failures += 1;
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}
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if (received.failures >= 5) {
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$('#connection-error').show();
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} else {
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$('#connection-error').hide();
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}
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var retry_sec = Math.min(90, Math.exp(received.failures/2));
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setTimeout(get_updates, retry_sec*1000);
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}
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});
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}
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$(get_updates);
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function above_view(zephyr) {
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var viewport = $(window);
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return zephyr.offset().top < viewport.scrollTop();
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}
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function below_view(zephyr) {
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var viewport = $(window);
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return zephyr.offset().top + zephyr.outerHeight(true) > viewport.scrollTop() + viewport.height();
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}
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function keep_pointer_in_view() {
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var viewport = $(window);
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var next_zephyr = get_zephyr_row(selected_zephyr_id);
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if (above_view(next_zephyr)) {
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while (above_view(next_zephyr)) {
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next_zephyr = get_next_visible(next_zephyr);
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}
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} else if (below_view(next_zephyr)) {
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while (below_view(next_zephyr)) {
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next_zephyr = get_prev_visible(next_zephyr);
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}
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}
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if ((viewport.scrollTop() === 0) && (next_zephyr.attr("zid") > get_first_visible().attr("zid"))) {
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// If we've scrolled to the top, keep inching the selected
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// zephyr up to the top instead of just the latest one that is
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// still on the screen.
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next_zephyr = get_prev_visible(next_zephyr);
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} else if ((viewport.scrollTop() + viewport.height() >= $("#main_div").outerHeight(true)) &&
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(next_zephyr.attr("zid") < get_last_visible().attr("zid"))) {
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// If we've scrolled to the bottom already, keep advancing the pointer
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// until we're at the last message (by analogue to the above)
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next_zephyr = get_next_visible(next_zephyr);
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}
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update_selected_zephyr(next_zephyr);
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}
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