* add actions dropdown to toggle combined mode

* hide 'toggle widescreen' menu item when in combined mode
 * unify some mode toggling code in App

index.php

@@ -238,6 +238,13 @@
                <div dojoType="fox.form.DropDownButton" class="action-button" title="<?= __('Actions...') ?>">
 					<span><i class="material-icons">menu</i></span>
                     <div dojoType="dijit.Menu" style="display: none">
+								<script type='dojo/method' event='onOpen' args='evt,a,b,c'>
+									const ws = this.getChildren().find((m) => m.id == 'qmcToggleWidescreen');
+
+									if (ws)
+										ws.attr('hidden', !!App.isCombinedMode());
+								</script>
+
                         <div dojoType="dijit.MenuItem" onclick="App.onActionSelected('qmcPrefs')"><?= __('Preferences...') ?></div>
                         <div dojoType="dijit.MenuItem" onclick="App.onActionSelected('qmcSearch')"><?= __('Search...') ?></div>
                         <div dojoType="dijit.MenuItem" disabled="1"><?= __('Feed actions:') ?></div>
@@ -248,7 +255,9 @@
                         <div dojoType="dijit.MenuItem" onclick="App.onActionSelected('qmcCatchupAll')"><?= __('Mark as read') ?></div>
                         <div dojoType="dijit.MenuItem" onclick="App.onActionSelected('qmcShowOnlyUnread')"><?= __('(Un)hide read feeds') ?></div>
                         <div dojoType="dijit.MenuItem" disabled="1"><?= __('Other actions:') ?></div>
-                        <div dojoType="dijit.MenuItem" onclick="App.onActionSelected('qmcToggleWidescreen')"><?= __('Toggle widescreen mode') ?></div>
+								<div dojoType="dijit.MenuItem" id="qmcToggleWidescreen" onclick="App.onActionSelected('qmcToggleWidescreen')">
+									<?= __('Toggle widescreen mode') ?></div>
+								<div dojoType="dijit.MenuItem" onclick="App.onActionSelected('qmcToggleCombined')"><?= __('Toggle combined mode') ?></div>
                         <div dojoType="dijit.MenuItem" onclick="App.onActionSelected('qmcHKhelp')"><?= __('Keyboard shortcuts help') ?></div>
 
                         <?php

js/App.js

@@ -286,7 +286,18 @@ const App = {
 
 	},
 	isCombinedMode: function() {
-		return this.getInitParam("combined_display_mode");
+		return !!this.getInitParam("combined_display_mode");
+	},
+	setCombinedMode: function(combined) {
+		const value = combined ? "true" : "false";
+
+		xhr.post("backend.php", {op: "rpc", method: "setpref", key: "COMBINED_DISPLAY_MODE", value: value}, () => {
+			this.setInitParam("combined_display_mode",
+				!this.getInitParam("combined_display_mode"));
+
+			Article.close();
+			Headlines.renderAgain();
+		})
 	},
 	getActionByHotkeySequence: function(sequence) {
 		const hotkeys_map = this.getInitParam("hotkeys");
@@ -797,7 +808,7 @@ const App = {
          this.setLoadingProgress(50);
 
          this._widescreen_mode = this.getInitParam("widescreen");
-         this.setWidescreen(this._widescreen_mode);
+         this.setWideScreenMode(this.isWideScreenMode(), true);
 
          Headlines.initScrollHandler();
 
@@ -882,7 +893,22 @@ const App = {
          }
       }
    },
-   setWidescreen: function(wide) {
+	isWideScreenMode: function() {
+		return !!this._widescreen_mode;
+	},
+   setWideScreenMode: function(wide, quiet = false) {
+
+		if (this.isCombinedMode() && !quiet) {
+			alert(__("Widescreen is not available in combined mode."));
+			return;
+		}
+
+		// reset stored sizes because geometry changed
+		Cookie.set("ttrss_ci_width", 0);
+		Cookie.set("ttrss_ci_height", 0);
+
+		this._widescreen_mode = wide;
+
       const article_id = Article.getActive();
       const headlines_frame = App.byId("headlines-frame");
       const content_insert = dijit.byId("content-insert");
@@ -1201,31 +1227,13 @@ const App = {
             }
          };
          this.hotkey_actions["toggle_widescreen"] = () => {
-            if (!this.isCombinedMode()) {
+				this.setWideScreenMode(!this.isWideScreenMode());
-               this._widescreen_mode = !this._widescreen_mode;
-
-               // reset stored sizes because geometry changed
-               Cookie.set("ttrss_ci_width", 0);
-               Cookie.set("ttrss_ci_height", 0);
-
-               this.setWidescreen(this._widescreen_mode);
-            } else {
-               alert(__("Widescreen is not available in combined mode."));
-            }
          };
          this.hotkey_actions["help_dialog"] = () => {
             this.hotkeyHelp();
          };
          this.hotkey_actions["toggle_combined_mode"] = () => {
-            const value = this.isCombinedMode() ? "false" : "true";
+				App.setCombinedMode(!App.isCombinedMode());
-
-            xhr.post("backend.php", {op: "rpc", method: "setpref", key: "COMBINED_DISPLAY_MODE", value: value}, () => {
-               this.setInitParam("combined_display_mode",
-                  !this.getInitParam("combined_display_mode"));
-
-               Article.close();
-               Headlines.renderAgain();
-            })
          };
          this.hotkey_actions["toggle_cdm_expanded"] = () => {
             const value = this.getInitParam("cdm_expanded") ? "false" : "true";
@@ -1294,17 +1302,10 @@ const App = {
             Feeds.toggleUnread();
             break;
          case "qmcToggleWidescreen":
-            if (!this.isCombinedMode()) {
+            App.setWideScreenMode(!App.isWideScreenMode());
-               this._widescreen_mode = !this._widescreen_mode;
+            break;
-
+			case "qmcToggleCombined":
-               // reset stored sizes because geometry changed
+				App.setCombinedMode(!App.isCombinedMode());
-               Cookie.set("ttrss_ci_width", 0);
-               Cookie.set("ttrss_ci_height", 0);
-
-               this.setWidescreen(this._widescreen_mode);
-            } else {
-               alert(__("Widescreen is not available in combined mode."));
-            }
 				break;
          case "qmcHKhelp":
             this.hotkeyHelp()