Clean up subs.have by splitting it into logical pieces

(imported from commit 0fe55aa62ccc95cae5c9aba565b0e4c04692fb46)

zephyr/static/js/compose.js

@@ -512,7 +512,7 @@ function validate_stream_message() {
 
     var response;
 
-    if (!subs.have(stream_name)) {
+    if (!subs.is_subscribed(stream_name)) {
         switch(check_stream_for_send(stream_name)) {
         case "does-not-exist":
             response = "<p>The stream <b>" +

zephyr/static/js/message_list.js

@@ -509,7 +509,7 @@ MessageList.prototype = {
         if (stream === undefined) {
             return;
         }
-        var trailing_bookend_content, subscribed = subs.have(stream);
+        var trailing_bookend_content, subscribed = subs.is_subscribed(stream);
         if (subscribed) {
             if (this.last_message_historical) {
                 trailing_bookend_content = "--- Subscribed to stream " + stream + " ---";

zephyr/static/js/narrow.js

@@ -321,24 +321,12 @@ exports.parse = function (str) {
     return operators;
 };
 
-exports.stream_in_home = function (stream_name) {
-    // If we don't know about this stream for some reason,
-    // we might not have loaded the in_home_view information
-    // yet so show it
-    var stream = subs.have(stream_name);
-    if (stream) {
-        return stream.in_home_view;
-    } else {
-        return true;
-    }
-};
-
 exports.message_in_home = function (message) {
     if (message.type === "private") {
         return true;
     }
 
-    return exports.stream_in_home(message.stream);
+    return subs.in_home_view(message.stream);
 };
 
 exports.stream = function () {
@@ -580,7 +568,7 @@ function pick_empty_narrow_banner() {
             // You have no private messages.
             return $("#empty_narrow_all_private_message");
         }
-    } else if ((first_operator === "stream") && !subs.have(first_operand)) {
+    } else if ((first_operator === "stream") && !subs.is_subscribed(first_operand)) {
         // You are narrowed to a stream to which you aren't subscribed.
         return $("#nonsubbed_stream_narrow_message");
     } else if (first_operator === "search") {

zephyr/static/js/stream_list.js

@@ -39,8 +39,7 @@ exports.sort_narrow_list = function () {
 
     var elems = [];
     $.each(streams, function(i, stream) {
-        // TODO: we should export the sub objects better
-        var li = $(subs.have(stream).sidebar_li);
+        var li = $(subs.get(stream).sidebar_li);
         if (sort_recent) {
             if (recent_subjects[stream] === undefined) {
                 li.addClass('inactive_stream');
@@ -93,8 +92,8 @@ function add_narrow_filter(name, type) {
     var args = {name: name,
                 id: subs.stream_id(name),
                 uri: narrow.by_stream_uri(name),
-                not_in_home_view: (subs.have(name).in_home_view === false),
-                invite_only: subs.have(name).invite_only,
+                not_in_home_view: (subs.in_home_view(name) === false),
+                invite_only: subs.get(name).invite_only,
                 color: subs.get_color(name)};
     var list_item = templates.render('stream_sidebar_row', args);
     $("#" + type + "_filters").append(list_item);
@@ -185,7 +184,7 @@ exports.update_streams_sidebar = function () {
         if (op_subject.length !== 0) {
             subject = op_subject[0];
         }
-        if (subs.have(op_stream[0])) {
+        if (subs.is_subscribed(op_stream[0])) {
             rebuild_recent_subjects(op_stream[0], subject);
         }
     }
@@ -268,7 +267,7 @@ $(function () {
             }
         }
         var op_stream = event.filter.operands('stream');
-        if (op_stream.length !== 0 && subs.have(op_stream[0])) {
+        if (op_stream.length !== 0 && subs.is_subscribed(op_stream[0])) {
             var stream_li = get_filter_li('stream', op_stream[0]);
             var op_subject = event.filter.operands('subject');
             var subject;

zephyr/static/js/subs.js

@@ -553,7 +553,7 @@ exports.setup_page = function () {
 
         all_streams.sort();
         all_streams.forEach(function (stream) {
-            if (exports.have(stream)) {
+            if (exports.is_subscribed(stream)) {
                 return;
             }
             var sub = create_sub(stream, {subscribed: false});
@@ -599,12 +599,18 @@ exports.setup_page = function () {
     $.when.apply(this, requests).then(populate_and_fill, failed_listing);
 };
 
-exports.have = function (stream_name) {
+exports.get = function (stream_name) {
+    return get_sub(stream_name);
+};
+
+exports.in_home_view = function (stream_name) {
     var sub = get_sub(stream_name);
-    if (sub !== undefined && sub.subscribed) {
-        return sub;
-    }
-    return false;
+    return sub !== undefined && sub.in_home_view;
+};
+
+exports.is_subscribed = function (stream_name) {
+    var sub = get_sub(stream_name);
+    return sub !== undefined && sub.subscribed;
 };
 
 function ajaxSubscribe(stream) {

zephyr/static/js/tab_bar.js

@@ -20,7 +20,7 @@ function make_tab_data() {
         // Root breadcrumb item: Either Home or All Messages
         var operator = ops[0][0];
         var operand = ops[0][1];
-        if ((operator === 'stream' && !narrow.stream_in_home(operand)) ||
+        if ((operator === 'stream' && !subs.in_home_view(operand)) ||
             (operator === 'in' && operand === 'all')) {
             tabs.push(make_tab("All Messages", "#narrow/in/all", undefined, "root"));
         } else {

zephyr/static/js/ui.js

@@ -1287,7 +1287,7 @@ $(function () {
 
         var ypos = $(e.target).offset().top - viewport.scrollTop();
         $(e.target).popover({
-            content:   templates.render('stream_sidebar_actions', {'stream': subs.have(stream)}),
+            content:   templates.render('stream_sidebar_actions', {'stream': subs.get(stream)}),
             trigger:   "manual",
             fixed: true
         });
@@ -1311,7 +1311,7 @@ $(function () {
         }
 
         $(e.target).popover("show");
-        var popover = $('.streams_popover[data-id=' + subs.have(stream).id + ']');
+        var popover = $('.streams_popover[data-id=' + subs.get(stream).id + ']');
         update_spectrum(popover, function(colorpicker) {
             colorpicker.spectrum(subs.sidebar_popover_colorpicker_options);
         });

zephyr/static/js/unread.js

@@ -142,14 +142,14 @@ exports.get_counts = function () {
     }
 
     $.each(unread_counts.stream, function(stream, msgs) {
-        if (! subs.have(stream)) {
+        if (! subs.is_subscribed(stream)) {
             return true;
         }
 
         var count = Object.keys(msgs).length;
         res.stream_count[stream] = count;
 
-        if (narrow.stream_in_home(stream)) {
+        if (subs.in_home_view(stream)) {
             res.home_unread_messages += only_in_home_view(Object.keys(msgs)).length;
         }