settings: Extract code for checking night-mode setting.

We extract the code for checking night mode setting on
the basis of color_scheme value and using matchMedia when
color_scheme is set to automatic. This is currently used
in rendering the correct logo only.

This is a prep commit for fixing loading indicator not
visible on message-edit button in night-mode.
This commit is contained in:
sahil839
2021-07-08 16:44:17 +05:30
committed by Tim Abbott
parent 8ffe22fc15
commit a3f7639af3
3 changed files with 39 additions and 9 deletions

View File

@@ -225,3 +225,25 @@ test_message_policy(
"realm_edit_topic_policy",
settings_data.user_can_edit_topic_of_any_message,
);
run_test("using_dark_theme", () => {
page_params.color_scheme = settings_config.color_scheme_values.night.code;
assert.equal(settings_data.using_dark_theme(), true);
page_params.color_scheme = settings_config.color_scheme_values.automatic.code;
window.matchMedia = (query) => {
assert.equal(query, "(prefers-color-scheme: dark)");
return {matches: true};
};
assert.equal(settings_data.using_dark_theme(), true);
window.matchMedia = (query) => {
assert.equal(query, "(prefers-color-scheme: dark)");
return {matches: false};
};
assert.equal(settings_data.using_dark_theme(), false);
page_params.color_scheme = settings_config.color_scheme_values.day.code;
assert.equal(settings_data.using_dark_theme(), false);
});

View File

@@ -2,7 +2,7 @@ import $ from "jquery";
import * as channel from "./channel";
import {page_params} from "./page_params";
import * as settings_config from "./settings_config";
import * as settings_data from "./settings_data";
import * as upload_widget from "./upload_widget";
export function build_realm_logo_widget(upload_function, is_night) {
@@ -82,14 +82,7 @@ export function rerender() {
);
}
if (
(page_params.color_scheme === settings_config.color_scheme_values.night.code &&
page_params.realm_night_logo_source !== "D") ||
(page_params.color_scheme === settings_config.color_scheme_values.automatic.code &&
page_params.realm_night_logo_source !== "D" &&
window.matchMedia &&
window.matchMedia("(prefers-color-scheme: dark)").matches)
) {
if (settings_data.using_dark_theme() && page_params.realm_night_logo_source !== "D") {
$("#realm-logo").attr("src", page_params.realm_night_logo_url);
} else {
$("#realm-logo").attr("src", page_params.realm_logo_url);

View File

@@ -158,3 +158,18 @@ export function user_can_edit_topic_of_any_message() {
}
return user_has_permission(page_params.realm_edit_topic_policy);
}
export function using_dark_theme() {
if (page_params.color_scheme === settings_config.color_scheme_values.night.code) {
return true;
}
if (
page_params.color_scheme === settings_config.color_scheme_values.automatic.code &&
window.matchMedia &&
window.matchMedia("(prefers-color-scheme: dark)").matches
) {
return true;
}
return false;
}