zulip/static/js/message_edit.js

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var message_edit = (function () {
var exports = {};
var currently_editing_messages = {};
// Returns true if the edit task should end.
exports.save = function (row, from_topic_edited_only) {
var msg_list = current_msg_list;
var message_id;
if (row.hasClass('recipient_row')) {
message_id = rows.id_for_recipient_row(row);
} else {
message_id = rows.id(row);
}
var message = current_msg_list.get(message_id);
var changed = false;
var new_content = row.find(".message_edit_content").val();
var topic_changed = false;
var new_topic;
if (message.type === "stream") {
new_topic = row.find(".message_edit_topic").val();
topic_changed = (new_topic !== message.subject && new_topic.trim() !== "");
}
// Editing a not-yet-acked message (because the original send attempt failed)
// just results in the in-memory message being changed
if (message.local_id !== undefined) {
// No changes
if (new_content === message.raw_content && !topic_changed) {
return true;
}
echo.edit_locally(message, new_content, topic_changed ? new_topic : undefined);
return true;
}
var request = {message_id: message.id};
if (topic_changed) {
request.subject = new_topic;
if (feature_flags.propagate_topic_edits) {
var selected_topic_propagation = row.find("select.message_edit_topic_propagate").val() || "change_later";
request.propagate_mode = selected_topic_propagation;
}
changed = true;
}
if (new_content !== message.raw_content && !from_topic_edited_only) {
request.content = new_content;
message.is_me_message = new_content.lastIndexOf('/me', 0) === 0;
changed = true;
}
if (!changed) {
// If they didn't change anything, just cancel it.
return true;
}
channel.post({
url: '/json/update_message',
data: request,
success: function (data) {
if (msg_list === current_msg_list) {
return true;
}
},
error: function (xhr, error_type, xhn) {
var message = channel.xhr_error_message("Error saving edit", xhr);
row.find(".edit_error").text(message).show();
}
});
// The message will automatically get replaced when it arrives.
};
function handle_edit_keydown(from_topic_edited_only, e) {
var row, code = e.keyCode || e.which;
if (e.target.id === "message_edit_content" && code === 13 &&
(e.metaKey || e.ctrlKey)) {
row = $(".message_edit_content").filter(":focus").closest(".message_row");
if (message_edit.save(row, from_topic_edited_only) === true) {
message_edit.end(row);
}
} else if (e.target.id === "message_edit_topic" && code === 13) {
// Hitting enter in topic field isn't so great.
e.stopPropagation();
e.preventDefault();
}
}
function timer_text(seconds_left) {
var minutes = Math.floor(seconds_left / 60);
var seconds = seconds_left % 60;
if (minutes >= 1) {
return i18n.t("__minutes__ min to edit", {'minutes': minutes.toString()});
} else if (seconds_left >= 10) {
return i18n.t("__seconds__ sec to edit", {'seconds': (seconds - seconds % 5).toString()});
}
return i18n.t("__seconds__ sec to edit", {'seconds': seconds.toString()});
}
function edit_message (row, raw_content) {
var content_top = row.find('.message_content')[0]
.getBoundingClientRect().top;
var message = current_msg_list.get(rows.id(row));
// We potentially got to this function by clicking a button that implied the
// user would be able to edit their message. Give a little bit of buffer in
// case the button has been around for a bit, e.g. we show the
// edit_content_button (hovering pencil icon) as long as the user would have
// been able to click it at the time the mouse entered the message_row. Also
// a buffer in case their computer is slow, or stalled for a second, etc
// If you change this number also change edit_limit_buffer in
// zerver.views.messages.update_message_backend
var seconds_left_buffer = 5;
var now = new XDate();
var seconds_left = page_params.realm_message_content_edit_limit_seconds +
now.diffSeconds(message.timestamp * 1000);
var can_edit_content = (page_params.realm_message_content_edit_limit_seconds === 0) ||
(seconds_left + seconds_left_buffer > 0);
var form = $(templates.render(
'message_edit_form',
{is_stream: (message.type === 'stream'),
topic: message.subject,
content: raw_content,
minutes_to_edit: Math.floor(page_params.realm_message_content_edit_limit_seconds / 60)}));
var edit_obj = {form: form, raw_content: raw_content};
currently_editing_messages[message.id] = edit_obj;
current_msg_list.show_edit_message(row, edit_obj);
form.keydown(_.partial(handle_edit_keydown, false));
if (!can_edit_content) {
row.find('textarea.message_edit_content').attr("disabled","disabled");
// Hint why you can edit the topic but not the message content
row.find('.message_edit_countdown_timer').text(i18n.t("Topic editing only"));
} else {
composebox_typeahead.initialize_compose_typeahead("#message_edit_content", {emoji: true});
}
// If we allow editing at all, give them at least 10 seconds to do it.
// If you change this number also change edit_limit_buffer in
// zerver.views.messages.update_message_backend
var min_seconds_to_edit = 10;
seconds_left = Math.floor(Math.max(seconds_left, min_seconds_to_edit));
// Add tooltip
if (page_params.realm_message_content_edit_limit_seconds > 0) {
row.find('.message-edit-timer-control-group').show();
$('#message_edit_tooltip').tooltip({
animation: false,
placement: 'left',
template: '<div class="tooltip" role="tooltip"><div class="tooltip-arrow"></div>' +
'<div class="tooltip-inner message-edit-tooltip-inner"></div></div>'
});
}
if (page_params.realm_message_content_edit_limit_seconds > 0) {
var timer_row = row.find('.message_edit_countdown_timer');
if (can_edit_content) { // Add a visual timer
// I believe these need to be defined outside the countdown_timer, since
// row just refers to something like the currently selected message, and
// can change out from under us
var message_content_row = row.find('textarea.message_edit_content');
var message_topic_row, message_topic_propagate_row;
if (message.type === 'stream') {
message_topic_row = row.find('input.message_edit_topic');
message_topic_propagate_row = row.find('select.message_edit_topic_propagate');
}
var message_save_row = row.find('button.message_edit_save');
// Do this right away, rather than waiting for the timer to do its first update,
// since otherwise there is a noticeable lag
timer_row.text(timer_text(seconds_left));
var countdown_timer = setInterval(function () {
if (--seconds_left <= 0) {
clearInterval(countdown_timer);
message_content_row.attr("disabled","disabled");
if (message.type === 'stream') {
message_topic_row.attr("disabled","disabled");
message_topic_propagate_row.hide();
}
// We don't go directly to "Topic editing only" state (with an active Save button),
// since it isn't clear what to do with the half-finished edit. It's nice to keep
// the half-finished edit around so that they can copy-paste it, but we don't want
// people to think "Save" will save the half-finished edit.
message_save_row.addClass("disabled");
timer_row.text(i18n.t("Time's up!"));
} else {
timer_row.text(timer_text(seconds_left));
}
}, 1000);
}
}
var edit_row = row.find(".message_edit");
if ((message.type === 'stream' && message.subject === compose.empty_topic_placeholder()) ||
!can_edit_content) {
edit_row.find(".message_edit_topic").focus();
} else {
edit_row.find(".message_edit_content").focus();
}
// Scroll to keep the message content in the same place
var edit_top = edit_row.find('.message_edit_content')[0]
.getBoundingClientRect().top;
var scroll_by = edit_top - content_top + 5 /* border and padding */;
edit_obj.scrolled_by = scroll_by;
viewport.scrollTop(viewport.scrollTop() + scroll_by);
if (feature_flags.propagate_topic_edits && message.local_id === undefined) {
var topic_input = edit_row.find(".message_edit_topic");
var original_topic = message.subject;
topic_input.keyup( function () {
var new_topic = topic_input.val();
row.find('.message_edit_topic_propagate').toggle(new_topic !== original_topic);
});
}
}
function start_edit_maintaining_scroll(row, content) {
edit_message(row, content);
var row_bottom = row.height() + row.offset().top;
var composebox_top = $("#compose").offset().top;
if (row_bottom > composebox_top) {
viewport.scrollTop(viewport.scrollTop() + row_bottom - composebox_top);
}
}
exports.start = function (row) {
var message = current_msg_list.get(rows.id(row));
var msg_list = current_msg_list;
channel.post({
url: '/json/fetch_raw_message',
idempotent: true,
data: {message_id: message.id},
success: function (data) {
if (current_msg_list === msg_list) {
message.raw_content = data.raw_content;
start_edit_maintaining_scroll(row, data.raw_content);
}
}
});
};
exports.start_local_failed_edit = function (row, message) {
start_edit_maintaining_scroll(row, message.raw_content);
};
exports.start_topic_edit = function (recipient_row) {
var form = $(templates.render('topic_edit_form'));
current_msg_list.show_edit_topic(recipient_row, form);
form.keydown(_.partial(handle_edit_keydown, true));
var msg_id = rows.id_for_recipient_row(recipient_row);
var message = current_msg_list.get(msg_id);
var topic = message.subject;
if (topic === compose.empty_topic_placeholder()) {
topic = '';
}
form.find(".message_edit_topic").val(topic).select().focus();
};
exports.is_editing = function (id) {
return currently_editing_messages[id] !== undefined;
};
exports.end = function (row) {
var message = current_msg_list.get(rows.id(row));
if (message !== undefined &&
currently_editing_messages[message.id] !== undefined) {
var scroll_by = currently_editing_messages[message.id].scrolled_by;
viewport.scrollTop(viewport.scrollTop() - scroll_by);
delete currently_editing_messages[message.id];
current_msg_list.hide_edit_message(row);
}
};
exports.maybe_show_edit = function (row, id) {
if (currently_editing_messages[id] !== undefined) {
current_msg_list.show_edit_message(row, currently_editing_messages[id]);
}
};
$(document).on('narrow_deactivated.zulip', function (event) {
_.each(currently_editing_messages, function (elem, idx) {
if (current_msg_list.get(idx) !== undefined) {
var row = current_msg_list.get_row(idx);
current_msg_list.show_edit_message(row, elem);
}
});
});
return exports;
}());