Files
zulip/static/js/hotkey.js
Steve Howell 1df2dfc6e0 hotkeys refactor: Flip conditional related to popovers.
When checking for hotkeys related to popovers, we avoid making
the external call for keys that won't be important for popovers.
This mostly helps testing.
2017-03-13 15:09:53 -07:00

526 lines
19 KiB
JavaScript

var hotkeys = (function () {
var exports = {};
function do_narrow_action(action) {
action(current_msg_list.selected_id(), {trigger: 'hotkey'});
return true;
}
function focus_in_empty_compose() {
return (
compose.composing() &&
compose.message_content() === "" &&
$('#new_message_content').is(':focus'));
}
exports.is_settings_page = function () {
return (/^#*(settings|administration)/g).test(window.location.hash);
};
var actions_dropdown_hotkeys = [
'down_arrow',
'up_arrow',
'vim_up',
'vim_down',
'enter',
];
// Note that multiple keys can map to the same event_name, which
// we'll do in cases where they have the exact same semantics.
// DON'T FORGET: update keyboard_shortcuts.html
var hotkeys_shift = {
// these can be triggered by shift + key only
9: {name: 'shift_tab', message_view_only: false}, // tab
32: {name: 'shift_spacebar', message_view_only: true}, // space bar
};
var hotkeys_no_modifiers = {
// these can be triggered by key only (without shift)
9: {name: 'tab', message_view_only: false}, // tab
32: {name: 'spacebar', message_view_only: true}, // space bar
33: {name: 'page_up', message_view_only: true}, // page up
34: {name: 'page_down', message_view_only: true}, // page down
35: {name: 'end', message_view_only: true}, // end
36: {name: 'home', message_view_only: true}, // home
37: {name: 'left_arrow', message_view_only: true}, // left arrow
38: {name: 'up_arrow', message_view_only: true}, // up arrow
40: {name: 'down_arrow', message_view_only: true}, // down arrow
};
var hotkeys_shift_insensitive = {
// these can be triggered by key or shift + key
// Note that codes for letters are still case sensitive!
8: {name: 'backspace', message_view_only: true}, // backspace
13: {name: 'enter', message_view_only: false}, // enter
27: {name: 'escape', message_view_only: false}, // escape
47: {name: 'search', message_view_only: false}, // '/'
63: {name: 'show_shortcuts', message_view_only: false}, // '?'
64: {name: 'compose_reply_with_mention', message_view_only: true}, // '@'
65: {name: 'stream_cycle_backward', message_view_only: true}, // 'A'
67: {name: 'compose_private_message', message_view_only: true}, // 'C'
68: {name: 'stream_cycle_forward', message_view_only: true}, // 'D'
74: {name: 'vim_page_down', message_view_only: true}, // 'J'
75: {name: 'vim_page_up', message_view_only: true}, // 'K'
82: {name: 'respond_to_author', message_view_only: true}, // 'R'
83: {name: 'narrow_by_subject', message_view_only: true}, //'S'
99: {name: 'compose', message_view_only: true}, // 'c'
105: {name: 'message_actions', message_view_only: true}, // 'i'
106: {name: 'vim_down', message_view_only: true}, // 'j'
107: {name: 'vim_up', message_view_only: true}, // 'k'
113: {name: 'query_users', message_view_only: false}, // 'q'
114: {name: 'reply_message', message_view_only: true}, // 'r'
115: {name: 'narrow_by_recipient', message_view_only: true}, // 's'
118: {name: 'narrow_private', message_view_only: true}, // 'v'
119: {name: 'query_streams', message_view_only: false}, // 'w'
};
var tab_up_down = (function () {
var list = ["#group-pm-list", "#stream_filters", "#global_filters", "#user_presences"];
return function (e) {
var $target = $(e.target);
var flag = $target.closest(list.join(", ")).length > 0;
return {
flag: flag,
next: function () {
return $target.closest("li").next().find("a");
},
prev: function () {
return $target.closest("li").prev().find("a");
},
};
};
}());
function get_hotkey_from_event(e) {
// We're in the middle of a combo; stop processing because
// we want the browser to handle it (to avoid breaking
// things like Ctrl-C or Command-C for copy).
if (e.metaKey || e.ctrlKey || e.altKey) {
return {name: 'ignore', message_view_only: false};
}
if (e.shiftKey && hotkeys_shift[e.which] !== undefined) {
return hotkeys_shift[e.which];
} else if (!e.shiftKey && hotkeys_no_modifiers[e.which] !== undefined) {
return hotkeys_no_modifiers[e.which];
} else if (hotkeys_shift_insensitive[e.which] !== undefined) {
return hotkeys_shift_insensitive[e.which];
}
return {name: 'ignore', message_view_only: false};
}
exports.is_editing_stream_name = function (e) {
return $(e.target).is(".editable-section");
};
// Process a keydown or keypress event.
//
// Returns true if we handled it, false if the browser should.
exports.process_hotkey = function (e) {
var row;
var alert_words_content;
var focused_message_edit_content;
var focused_message_edit_save;
var message_edit_form;
var hotkey = get_hotkey_from_event(e);
var event_name = hotkey.name;
activity.new_user_input = true;
if (event_name === 'ignore') {
return false;
}
if (hotkey.message_view_only && ui.home_tab_obscured()) {
return false;
}
if (exports.is_editing_stream_name(e)) {
if (event_name === "enter") {
$(e.target).parent().find(".checkmark").click();
}
return false;
}
var tab_list;
if (event_name === "up_arrow") {
tab_list = tab_up_down(e);
if (tab_list.flag) {
tab_list.prev().focus();
return true;
}
}
if (event_name === "down_arrow") {
tab_list = tab_up_down(e);
if (tab_list.flag) {
tab_list.next().focus();
return true;
}
}
if ((actions_dropdown_hotkeys.indexOf(event_name) !== -1) && popovers.actions_popped()) {
popovers.actions_menu_handle_keyboard(event_name);
return true;
}
// The next two sections date back to 00445c84 and are Mac/Chrome-specific,
// and they should possibly be eliminated in favor of keeping standard
// browser behavior.
if (event_name === 'backspace') {
if ($('#compose-send-button').is(':focus')) {
// Ignore backspace; don't navigate back a page.
return true;
}
}
if (event_name === 'shift_tab') {
if ($('#compose-send-button').is(':focus')) {
// Shift-Tab: go back to content textarea and restore
// cursor position.
ui.restore_compose_cursor();
return true;
}
}
// In Safari and the desktop app, we can't tab to buttons. Intercept the
// tab from the message edit content box to Save and then Cancel.
if (event_name === "tab") {
alert_words_content = $(".edit-alert-word").filter(":focus");
if (alert_words_content.length > 0) {
var add_word_li = alert_words_content.closest(".alert-word-item");
add_word_li.find(".add-alert-word").focus();
return true;
}
focused_message_edit_content = $(".message_edit_content").filter(":focus");
if (focused_message_edit_content.length > 0) {
message_edit_form = focused_message_edit_content.closest(".message_edit_form");
message_edit_form.find(".message_edit_save").focus();
return true;
}
focused_message_edit_save = $(".message_edit_save").filter(":focus");
if (focused_message_edit_save.length > 0) {
message_edit_form = focused_message_edit_save.closest(".message_edit_form");
message_edit_form.find(".message_edit_cancel").focus();
return true;
}
}
if (event_name === "shift_tab") {
// Shift-tabbing from the edit message cancel button takes you to save.
if ($(".message_edit_cancel").filter(":focus").length > 0) {
$(".message_edit_save").focus();
return true;
}
// Shift-tabbing from the edit message save button takes you to the content.
focused_message_edit_save = $(".message_edit_save").filter(":focus");
if (focused_message_edit_save.length > 0) {
focused_message_edit_save.closest(".message_edit_form")
.find(".message_edit_content").focus();
return true;
}
}
if (event_name === "escape") {
if ($("#overlay").hasClass("show")) {
ui.exit_lightbox_photo();
return true;
} else if ($("#subscription_overlay").hasClass("show")) {
subs.close();
return true;
} else if ($("#draft_overlay").hasClass("show")) {
drafts.close();
return true;
} else if ($(".informational-overlays").hasClass("show")) {
ui.hide_info_overlay();
return true;
} else if ($("#invite-user").css("display") === "block") {
$("#invite-user").modal("hide");
return true;
}
}
if (exports.is_settings_page()) {
if (event_name === 'up_arrow') {
var prev = e.target.previousElementSibling;
if ($(prev).css("display") !== "none") {
$(prev).focus().click();
}
return true;
} else if (event_name === 'down_arrow') {
var next = e.target.nextElementSibling;
if ($(next).css("display") !== "none") {
$(next).focus().click();
}
return true;
} else if (event_name === 'escape') {
$("#settings_overlay_container .exit").click();
return true;
}
return false;
}
// Process hotkeys specially when in an input, select, textarea, or send button
if ($('input:focus,select:focus,textarea:focus,#compose-send-button:focus').length > 0) {
if (event_name === 'escape') {
// emoji window should trap escape before it is able to close the compose box
if ($('.emoji_popover').css('display') === 'inline-block') {
popovers.hide_emoji_map_popover();
return;
}
// If one of our typeaheads is open, do nothing so that the Esc
// will go to close it
if ($("#subject").data().typeahead.shown ||
$("#stream").data().typeahead.shown ||
$("#private_message_recipient").data().typeahead.shown ||
$("#new_message_content").data().typeahead.shown ||
$("#search_query").data().typeahead.shown) {
// For some reason this code is only needed in Firefox;
// in Chrome our typeahead is able to intercept the Esc
// event before we even get it.
// Regardless, we do nothing in this case.
return true;
} else if ($(".message_edit_content").filter(":focus").length > 0) {
row = $(".message_edit_content").filter(":focus").closest(".message_row");
message_edit.end(row);
} else if ($(".message_edit_topic").filter(":focus").length > 0) {
row = $(".message_edit_topic").filter(":focus").closest(".message_row");
message_edit.end(row);
} else if (activity.searching()) {
activity.escape_search();
return true;
} else if (stream_list.searching()) {
stream_list.escape_search();
return true;
} else if (compose.composing()) {
// If the user hit the escape key, cancel the current compose
compose.cancel();
return true;
} else {
// We pressed Esc and something was focused, and the composebox
// wasn't open. In that case, we should blur the input.
// (this is almost certainly the searchbar)
$("input:focus,textarea:focus").blur();
return true;
}
}
if (event_name === 'enter') {
if (exports.is_settings_page()) {
$(e.target).click();
return true;
} else if (activity.searching()) {
activity.blur_search();
return true;
} else if (stream_list.searching()) {
stream_list.clear_and_hide_search();
return true;
}
}
if (event_name === 'left_arrow' && focus_in_empty_compose()) {
compose.cancel();
message_edit.edit_last_sent_message();
return true;
}
if ((event_name === 'up_arrow' || event_name === 'down_arrow') && focus_in_empty_compose()) {
compose.cancel();
// don't return, as we still want it to be picked up by the code below
} else if (event_name === "page_up") {
$("#new_message_content").caret(0);
return true;
} else if (event_name === "page_down") {
// so that it always goes to the end of the compose box.
$("#new_message_content").caret(Infinity);
return true;
} else {
// Let the browser handle the key normally.
return false;
}
}
if (event_name === 'left_arrow') {
message_edit.edit_last_sent_message();
return true;
}
// If we're on a button or a link and have pressed enter, let the
// browser handle the keypress
//
// This is subtle and here's why: Suppose you have the focus on a
// stream name in your left sidebar. j and k will still move your
// cursor up and down, but Enter won't reply -- it'll just trigger
// the link on the sidebar! So you keep pressing enter over and
// over again. Until you click somewhere or press r.
if ($('a:focus,button:focus').length > 0 && event_name === 'enter') {
return false;
}
// Shortcuts that don't require a message
switch (event_name) {
case 'compose': // 'c': compose
compose.start('stream', {trigger: "compose_hotkey"});
return true;
case 'compose_private_message':
compose.start('private', {trigger: "compose_hotkey"});
return true;
case 'enter':
// There's special handling for when you're previewing a composition
if ($("#preview_message_area").is(":visible")) {
compose.enter_with_preview_open();
return true;
}
break;
case 'escape': // Esc: close actions popup, cancel compose, clear a find, or un-narrow
if ($('.emoji_popover').css('display') === 'inline-block') {
popovers.hide_emoji_map_popover();
} else if (popovers.any_active()) {
popovers.hide_all();
} else if (compose.composing()) {
compose.cancel();
} else {
search.clear_search();
}
return true;
case 'narrow_private':
return do_narrow_action(function (target, opts) {
narrow.by('is', 'private', opts);
});
case 'query_streams':
stream_list.initiate_search();
return true;
case 'query_users':
activity.initiate_search();
return true;
case 'search':
search.initiate_search();
return true;
case 'show_shortcuts': // Show keyboard shortcuts page
ui.show_info_overlay("keyboard-shortcuts");
return true;
case 'stream_cycle_backward':
navigate.cycle_stream('backward');
return true;
case 'stream_cycle_forward':
navigate.cycle_stream('forward');
return true;
}
if (current_msg_list.empty()) {
return false;
}
// Navigation shortcuts
switch (event_name) {
case 'down_arrow':
case 'vim_down':
navigate.down(true); // with_centering
return true;
case 'up_arrow':
case 'vim_up':
navigate.up();
return true;
case 'home':
navigate.to_home();
return true;
case 'end':
navigate.to_end();
return true;
case 'page_up':
case 'vim_page_up':
case 'shift_spacebar':
if (!exports.is_settings_page()) {
navigate.page_up();
return true;
}
break;
case 'page_down':
case 'vim_page_down':
case 'spacebar':
if (!exports.is_settings_page()) {
navigate.page_down();
return true;
}
break;
}
// Shortcuts that operate on a message
switch (event_name) {
case 'message_actions':
return popovers.open_message_menu();
case 'narrow_by_recipient':
return do_narrow_action(narrow.by_recipient);
case 'narrow_by_subject':
return do_narrow_action(narrow.by_subject);
case 'enter': // Enter: respond to message (unless we need to do something else)
compose.respond_to_message({trigger: 'hotkey enter'});
return true;
case 'reply_message': // 'r': respond to message
compose.respond_to_message({trigger: 'hotkey'});
return true;
case 'respond_to_author': // 'R': respond to author
compose.respond_to_message({reply_type: "personal", trigger: 'hotkey pm'});
return true;
case 'compose_reply_with_mention': // '@': respond to message with mention to author
compose.respond_to_message({trigger: 'hotkey'});
var message = current_msg_list.selected_message();
$("#new_message_content").val('@**' + message.sender_full_name + '** ');
return true;
}
return false;
};
/* We register both a keydown and a keypress function because
we want to intercept pgup/pgdn, escape, etc, and process them
as they happen on the keyboard. However, if we processed
letters/numbers in keydown, we wouldn't know what the case of
the letters were.
We want case-sensitive hotkeys (such as in the case of r vs R)
so we bail in .keydown if the event is a letter or number and
instead just let keypress go for it. */
$(document).keydown(function (e) {
// Restrict to non-alphanumeric keys
// check if 27 (esc) because it doesn't register under .keypress()
if (e.which < 48 || e.which > 90 || e.which === 27) {
if (exports.process_hotkey(e)) {
e.preventDefault();
}
}
resize.resize_bottom_whitespace();
});
$(document).keypress(function (e) {
// What exactly triggers .keypress may vary by browser.
// Welcome to compatability hell.
//
// In particular, when you press tab in Firefox, it fires a
// keypress event with keycode 0 after processing the original
// event.
if (e.which !== 0 && e.charCode !== 0) {
if (exports.process_hotkey(e)) {
e.preventDefault();
}
}
});
return exports;
}());
if (typeof module !== 'undefined') {
module.exports = hotkeys;
}