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143 lines
4.1 KiB
JavaScript
143 lines
4.1 KiB
JavaScript
"use strict";
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const message_viewport = require("./message_viewport");
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/*
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For various historical reasons there isn't one
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single chunk of code that really makes our gear
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menu function. In this comment I try to help
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you know where to look for relevant code.
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The module that you're reading now doesn't
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actually do much of the work.
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Our gear menu has these choices:
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=================
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hash: Manage streams
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hash: Settings
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hash: Organization settings
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---
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link: Help center
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info: Keyboard shortcuts
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info: Message formatting
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info: Search operators
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---
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link: Desktop & mobile apps
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link: Integrations
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link: API documentation
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link: Statistics
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---
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hash: Invite users
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---
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misc: Logout
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=================
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Depending on settings, there may also be choices
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like "Feedback" or "Debug".
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The menu items get built in a server-side template called
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templates/zerver/app/navbar.html. Each item is
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an HTML anchor tag with a "role" of "menuitem".
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The menu itself has the selector
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"settings-dropdown".
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The items with the prefix of "hash:" are in-page
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links:
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#streams
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#settings
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#organization
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#invite
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When you click on the links there is a function
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called hashchanged() in static/js/hashchange.js
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that gets invoked. (We use window.onhashchange
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to register the handler.) This function then
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launches the appropriate modal for each menu item.
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Look for things like subs.launch(...) or
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invite.launch() in that code.
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Some items above are prefixed with "link:". Those
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items, when clicked, just use the normal browser
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mechanism to link to external pages, and they
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have a target of "_blank".
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The "info:" items use our info overlay system
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in static/js/info_overlay.js. They are dispatched
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using a click handler in static/js/click_handlers.js.
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The click handler uses "[data-overlay-trigger]" as
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the selector and then calls hash_change.go_to_location.
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*/
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// We want to remember how far we were scrolled on each 'tab'.
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// To do so, we need to save away the old position of the
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// scrollbar when we switch to a new tab (and restore it
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// when we switch back.)
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const scroll_positions = new Map();
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exports.update_org_settings_menu_item = function () {
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const item = $(".admin-menu-item").expectOne();
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if (page_params.is_admin) {
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item.find("span").text(i18n.t("Manage organization"));
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} else {
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item.find("span").text(i18n.t("Organization settings"));
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}
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};
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exports.initialize = function () {
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exports.update_org_settings_menu_item();
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$('#gear-menu a[data-toggle="tab"]').on("show", (e) => {
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// Save the position of our old tab away, before we switch
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const old_tab = $(e.relatedTarget).attr("href");
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scroll_positions.set(old_tab, message_viewport.scrollTop());
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});
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$('#gear-menu a[data-toggle="tab"]').on("shown", (e) => {
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const target_tab = $(e.target).attr("href");
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// Hide all our error messages when switching tabs
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$(".alert").removeClass("show");
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// Set the URL bar title to show the sub-page you're currently on.
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let browser_url = target_tab;
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if (browser_url === "#message_feed_container") {
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browser_url = "";
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}
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hashchange.changehash(browser_url);
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// After we show the new tab, restore its old scroll position
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// (we apparently have to do this after setting the hash,
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// because otherwise that action may scroll us somewhere.)
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if (target_tab === "#message_feed_container") {
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if (scroll_positions.has(target_tab)) {
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message_viewport.scrollTop(scroll_positions.get(target_tab));
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} else {
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navigate.scroll_to_selected();
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}
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}
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});
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// The admin and settings pages are generated client-side through
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// templates.
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};
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exports.open = function () {
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$("#settings-dropdown").trigger("click");
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// there are invisible li tabs, which should not be clicked.
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$("#gear-menu").find("li:not(.invisible) a").eq(0).trigger("focus");
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};
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exports.is_open = function () {
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return $(".dropdown").hasClass("open");
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};
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exports.close = function () {
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if (exports.is_open()) {
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$(".dropdown").removeClass("open");
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}
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};
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window.gear_menu = exports;
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