Consolidate JavaScript modal closing in modals.js.

This consolidates all actions to close modals into modals.js and
triggers the correct cleaning/collapsing function dependent on what the
data-overlay attribute is labeled as.

It also ensures these all have an e.stopPropagation().

Fixes #4029.

.eslintrc.json

@@ -33,6 +33,7 @@
         "loading": false,
         "compose": false,
         "compose_fade": false,
+        "modals": false,
         "subs": false,
         "timerender": false,
         "message_live_update": false,

static/js/click_handlers.js

@@ -11,8 +11,6 @@ $(function () {
     var clicking = false;
     var mouse_moved = false;
 
-    var meta = {};
-
     function mousedown() {
         mouse_moved = false;
         clicking = true;
@@ -261,12 +259,6 @@ $(function () {
         }
     });
 
-    $("#drafts_table").on("click", ".exit, #draft_overlay", function (e) {
-        if ($(e.target).is(".exit, .exit-sign, #draft_overlay, #draft_overlay > .flex")) {
-            drafts.close();
-        }
-    });
-
     // HOME
 
     // Capture both the left-sidebar Home click and the tab breadcrumb Home
@@ -338,12 +330,6 @@ $(function () {
         e.preventDefault();
     });
 
-    $(".informational-overlays").click(function (e) {
-        if ($(e.target).is(".informational-overlays, .exit")) {
-            ui.hide_info_overlay();
-        }
-    });
-
     $("body").on("click", "[data-overlay-trigger]", function () {
         ui.show_info_overlay($(this).attr("data-overlay-trigger"));
     });
@@ -551,14 +537,6 @@ $(function () {
             }
         });
 
-        $("#overlay .exit, #overlay .image-preview").click(function (e) {
-            if ($(e.target).is(".exit, .image-preview")) {
-                ui.exit_lightbox_photo();
-            }
-            e.preventDefault();
-            e.stopPropagation();
-        });
-
         $("#overlay .download").click(function () {
           this.blur();
         });

static/js/drafts.js

@@ -105,7 +105,7 @@ exports.restore_draft = function (draft_id) {
                               draft_copy);
     }
 
-    exports.close();
+    modals.close_modal("drafts");
     compose_fade.clear_compose();
     if (draft.type === "stream" && draft.stream === "") {
         draft_copy.subject = "";
@@ -209,11 +209,6 @@ exports.launch = function () {
     });
 };
 
-exports.close = function () {
-    hashchange.exit_modal();
-    $("#draft_overlay").removeClass("show");
-};
-
 $(function () {
     window.addEventListener("beforeunload", function () {
         exports.update_draft();

static/js/hashchange.js

@@ -323,7 +323,7 @@ exports.initialize = function () {
 };
 
 exports.close_modals = function () {
-    $("[data-overlay]").removeClass("show");
+    $(".overlay.show").removeClass("show");
 };
 
 exports.exit_modal = function (callback) {
@@ -334,8 +334,6 @@ exports.exit_modal = function (callback) {
         if (typeof callback === "function") {
             callback();
         }
-
-        exports.close_modals();
     }
 };
 

static/js/hotkey.js

@@ -157,27 +157,27 @@ exports.process_escape_key = function (e) {
     }
 
     if ($("#overlay").hasClass("show")) {
-        ui.exit_lightbox_photo();
+        modals.close_modal("lightbox");
         return true;
     }
 
     if ($("#subscription_overlay").hasClass("show")) {
-        subs.close();
+        modals.close_modal("subscriptions");
         return true;
     }
 
     if ($("#draft_overlay").hasClass("show")) {
-        drafts.close();
+        modals.close_modal("drafts");
         return true;
     }
 
     if ($(".informational-overlays").hasClass("show")) {
-        ui.hide_info_overlay();
+        modals.close_modal("informationalOverlays");
         return true;
     }
 
-    if ($("#invite-user").css("display") === "block") {
-        $("#invite-user").modal("hide");
+    if ($("#invite-user.show").length) {
+        modals.close_modal("invite");
         return true;
     }
 

static/js/modals.js

@@ -0,0 +1,70 @@
+var modals = (function () {
+    "use strict";
+
+    var exports = {
+        close: {
+            subscriptions: function () {
+                subs.close();
+            },
+
+            drafts: function () {
+                hashchange.exit_modal();
+            },
+
+            informationalOverlays: function () {
+                $(".informational-overlays").removeClass("show");
+            },
+
+            settings: function () {
+                hashchange.exit_modal();
+            },
+
+            lightbox: function () {
+                $(".player-container iframe").remove();
+                document.activeElement.blur();
+            },
+        },
+
+        close_modal: function (name) {
+            $("[data-overlay='" + name + "']").removeClass("show");
+
+            if (exports.close[name]) {
+                exports.close[name]();
+            }
+        },
+    };
+
+    $(function () {
+        $("body").on("click", ".overlay, .overlay .exit", function (e) {
+            var $target = $(e.target);
+
+            // if the target is not the .overlay element, search up the node tree
+            // until it is found.
+            if ($target.is(".exit, .exit-sign, .overlay-content")) {
+                $target = $target.closest("[data-overlay]");
+            } else if (!$target.is(".overlay")) {
+                // not a valid click target then.
+                return;
+            }
+
+            var target_name = $target.attr("data-overlay");
+
+            $target.removeClass("show");
+
+            // if an appropriate clearing/closing function for a modal exists,
+            // execute it.
+            if (exports.close[target_name]) {
+                exports.close[target_name]();
+            }
+
+            e.preventDefault();
+            e.stopPropagation();
+        });
+    });
+
+    return exports;
+}());
+
+if (typeof module !== 'undefined') {
+    module.exports = modals;
+}

static/js/subs.js

@@ -823,7 +823,6 @@ Object.defineProperty(exports, "is_open", {
 exports.close = function () {
     hashchange.exit_modal();
     meta.is_open = false;
-    $("#subscription_overlay").removeClass("show");
     subs.remove_miscategorized_streams();
 };
 

static/js/ui.js

@@ -313,10 +313,6 @@ exports.show_info_overlay = function (target) {
     }
 };
 
-exports.hide_info_overlay = function () {
-    $(".informational-overlays").removeClass("show");
-};
-
 exports.lightbox_photo = function (image, user) {
     // image should be an Image Object in JavaScript.
     var url = $(image).attr("src");
@@ -336,12 +332,6 @@ exports.lightbox_photo = function (image, user) {
     $(".image-actions .open, .image-actions .download").attr("href", url);
 };
 
-exports.exit_lightbox_photo = function () {
-    $("#overlay").removeClass("show");
-    $(".player-container iframe").remove();
-    document.activeElement.blur();
-};
-
 exports.youtube_video = function (id) {
     $("#overlay .image-preview, .image-description, .download").hide();
 

templates/zerver/index.html

@@ -124,7 +124,7 @@ var page_params = {{ page_params }};
     {% include "zerver/subscriptions.html" %}
     {% include "zerver/drafts.html" %}
 </div><!--/row-->
-    <div class="informational-overlays overlay new-style">
+    <div class="informational-overlays overlay new-style" data-overlay="informationalOverlays">
         <div class="overlay-content">
             <div class="overlay-tabs">
                 <button class="button no-style exit">&times;</button>

templates/zerver/lightbox_overlay.html

@@ -1,4 +1,4 @@
-<div id="overlay" class="overlay new-style">
+<div id="overlay" class="overlay new-style" data-overlay="lightbox">
     <div class="image-info-wrapper">
         <div class="image-description">
             <div class="title"></div>
@@ -16,6 +16,6 @@
         <div class="clear-float"></div>
     </div>
 
-    <div class="image-preview"></div>
+    <div class="image-preview overlay-content"></div>
     <div class="player-container"></div>
 </div>

zproject/settings.py

@@ -852,6 +852,7 @@ JS_SPECS = {
             'js/copy_and_paste.js',
             'js/stream_popover.js',
             'js/popovers.js',
+            'js/modals.js',
             'js/typeahead_helper.js',
             'js/search_suggestion.js',
             'js/search.js',