Create gear_menu.js (with code from ui.js).

(imported from commit fc4d058d49d5d4aaaa20ef6237ea3e927eac03e3)

static/js/gear_menu.js

@@ -0,0 +1,73 @@
+var gear_menu = (function () {
+
+var exports = {};
+
+// We want to remember how far we were scrolled on each 'tab'.
+// To do so, we need to save away the old position of the
+// scrollbar when we switch to a new tab (and restore it
+// when we switch back.)
+var scroll_positions = {};
+
+$(function () {
+    admin.show_or_hide_menu_item();
+
+    $('#gear-menu a[data-toggle="tab"]').on('show', function (e) {
+        // Save the position of our old tab away, before we switch
+        var old_tab = $(e.relatedTarget).attr('href');
+        scroll_positions[old_tab] = viewport.scrollTop();
+    });
+    $('#gear-menu a[data-toggle="tab"]').on('shown', function (e) {
+        var target_tab = $(e.target).attr('href');
+        resize.resize_bottom_whitespace();
+        // Hide all our error messages when switching tabs
+        $('.alert-error').hide();
+        $('.alert-success').hide();
+        $('.alert-info').hide();
+        $('.alert').hide();
+
+        // Set the URL bar title to show the sub-page you're currently on.
+        var browser_url = target_tab;
+        if (browser_url === "#home") {
+            browser_url = "";
+        }
+        hashchange.changehash(browser_url);
+
+        // After we show the new tab, restore its old scroll position
+        // (we apparently have to do this after setting the hash,
+        // because otherwise that action may scroll us somewhere.)
+        if (scroll_positions.hasOwnProperty(target_tab)) {
+            viewport.scrollTop(scroll_positions[target_tab]);
+        } else {
+            if (target_tab === '#home') {
+                scroll_to_selected();
+            } else {
+                viewport.scrollTop(0);
+            }
+        }
+    });
+
+    var subs_link = $('#gear-menu a[href="#subscriptions"]');
+
+    // If the streams page is shown by clicking directly on the "Streams"
+    // link (in the gear menu), then focus the new stream textbox.
+    subs_link.on('click', function (e) {
+        $(document).one('subs_page_loaded.zulip', function (e) {
+            $('#create_stream_name').focus().select();
+        });
+    });
+
+    // Whenever the streams page comes up (from anywhere), populate it.
+    subs_link.on('shown', subs.setup_page);
+
+    // The admin and settings pages are generated client-side through
+    // templates.
+
+    var admin_link = $('#gear-menu a[href="#administration"]');
+    admin_link.on('shown', admin.setup_page);
+
+    var settings_link = $('#gear-menu a[href="#settings"]');
+    settings_link.on('shown', settings.setup_page);
+});
+
+return exports;
+}());