Revert cdc0524 and instead allow customizing enabled shortcuts (closes #223, closes #234)

Author: filips123

native/userchrome/profile/chrome/pwa/chrome.jsm

@@ -40,6 +40,10 @@ class ChromeLoader {
   static PREF_ENABLE_TABS_MODE = 'firefoxpwa.enableTabsMode';
   static PREF_ENABLE_HIDING_ICON_BAR = 'firefoxpwa.enableHidingIconBar';
   static PREF_ALLOWED_DOMAINS = 'firefoxpwa.allowedDomains';
+  static PREF_SHORTCUTS_CLOSE_TAB = 'firefoxpwa.shortcuts.closeTab';
+  static PREF_SHORTCUTS_CLOSE_WINDOW = 'firefoxpwa.shortcuts.closeWindow';
+  static PREF_SHORTCUTS_QUIT_APPLICATION = 'firefoxpwa.shortcuts.quitApplication';
+  static PREF_SHORTCUTS_PRIVATE_BROWSING = 'firefoxpwa.shortcuts.privateBrowsing';
 
   static INITIALIZED_BROWSER = false;
   static INITIALIZED_PREFERENCES = false;

native/userchrome/profile/chrome/pwa/content/browser.jsm

@@ -35,6 +35,7 @@ class PwaBrowser {
     this.handleRegisteringProtocols();
     this.handleOutOfScopeNavigation();
     this.handleOpeningNewWindow();
+    this.handleDisablingShortcuts();
     setTimeout(() => { this.handleHiddenTitlebar() });
     setTimeout(() => { this.handleTabsMode() });
     setTimeout(() => { this.handleLinkTargets() });
@@ -456,6 +457,14 @@ class PwaBrowser {
     });
   }
 
+  handleDisablingShortcuts () {
+    const getPref = (pref) => xPref.get(pref, false, true);
+    if (!getPref(ChromeLoader.PREF_SHORTCUTS_CLOSE_TAB)) document.getElementById('key_close').remove();
+    if (!getPref(ChromeLoader.PREF_SHORTCUTS_CLOSE_WINDOW)) document.getElementById('key_closeWindow').remove();
+    if (!getPref(ChromeLoader.PREF_SHORTCUTS_QUIT_APPLICATION)) document.getElementById('key_quitApplication').remove();
+    if (!getPref(ChromeLoader.PREF_SHORTCUTS_PRIVATE_BROWSING)) document.getElementById('key_privatebrowsing').remove();
+  }
+
   handleHiddenTitlebar () {
     // This can be unstable feature and is only meant for tiling window manager users
     // So it is disabled by default and can be enabled using about:config preference
@@ -705,11 +714,10 @@ class PwaBrowser {
   }
 
   disableNewTabShortcuts () {
-    // New tab and close tab shortcuts are useless when tabs mode is disabled
+    // New tab shortcuts are useless when the tabs mode is disabled
     if (!xPref.get(ChromeLoader.PREF_ENABLE_TABS_MODE)) {
       document.getElementById('cmd_newNavigatorTab').remove();
       document.getElementById('cmd_newNavigatorTabNoEvent').remove();
-      document.getElementById('key_close').remove();
     }
   }
 
@@ -1738,6 +1746,12 @@ class PwaBrowser {
     // Determines which domains should always be allowed to open in the PWA browser
     // This is a comma-separated list of domains
     xPref.set(ChromeLoader.PREF_ALLOWED_DOMAINS, '', true);
+
+    // Determines whether specific shortcuts are enabled or not
+    xPref.set(ChromeLoader.PREF_SHORTCUTS_CLOSE_TAB, true, true);
+    xPref.set(ChromeLoader.PREF_SHORTCUTS_CLOSE_WINDOW, true, true);
+    xPref.set(ChromeLoader.PREF_SHORTCUTS_QUIT_APPLICATION, true, true);
+    xPref.set(ChromeLoader.PREF_SHORTCUTS_PRIVATE_BROWSING, true, true);
   }
 
   disableOnboarding () {

native/userchrome/profile/chrome/pwa/content/preferences.jsm

@@ -28,11 +28,15 @@ class PwaPreferences {
       { id: ChromeLoader.PREF_OPEN_IN_EXISTING_WINDOW, type: 'bool' },
       { id: ChromeLoader.PREF_ENABLE_TABS_MODE, type: 'bool' },
       { id: ChromeLoader.PREF_ALLOWED_DOMAINS, type: 'wstring' },
+      { id: ChromeLoader.PREF_SHORTCUTS_CLOSE_TAB, type: 'bool' },
+      { id: ChromeLoader.PREF_SHORTCUTS_CLOSE_WINDOW, type: 'bool' },
+      { id: ChromeLoader.PREF_SHORTCUTS_QUIT_APPLICATION, type: 'bool' },
+      { id: ChromeLoader.PREF_SHORTCUTS_PRIVATE_BROWSING, type: 'bool' },
     ]);
   }
 
   addPreferenceElements () {
-    const group = MozXULElement.parseXULToFragment(`
+    const firefoxpwaGroup = MozXULElement.parseXULToFragment(`
 <groupbox id="firefoxpwaGroup" data-category="paneGeneral">
   <label>
     <html:h2>Progressive Web Apps</html:h2>
@@ -93,11 +97,28 @@ class PwaPreferences {
     </vbox>
   </vbox>
 </groupbox>
-`);
+`).firstChild;
+
+    const shortcutsGroup = MozXULElement.parseXULToFragment(`
+<groupbox id="shortcutsGroup" data-category="paneGeneral">
+  <label>
+    <html:h2>Keyboard Shortcuts</html:h2>
+    <description>You may need to restart the browser to apply these settings</description>
+  </label>
+  <vbox id="colorsBox" style="padding-top: 1rem;">
+    <checkbox preference="${ChromeLoader.PREF_SHORTCUTS_CLOSE_TAB}" label="Close tab (Ctrl+W)" />
+    <checkbox preference="${ChromeLoader.PREF_SHORTCUTS_CLOSE_WINDOW}" label="Close window (Ctrl+Shift+W)" />
+    <checkbox preference="${ChromeLoader.PREF_SHORTCUTS_QUIT_APPLICATION}" label="Quit application (Ctrl+Shift+Q)" />
+    <checkbox preference="${ChromeLoader.PREF_SHORTCUTS_PRIVATE_BROWSING}" label="Private browsing (Ctrl+Shift+P)" />
+  </vbox>
+</groupbox>
+`).firstChild;
 
     const startupGroup = document.getElementById('startupGroup');
-    if (startupGroup.hidden) group.firstChild.hidden = true;
-    startupGroup.nextElementSibling.after(group.firstChild);
+    if (startupGroup.hidden) firefoxpwaGroup.hidden = true;
+    if (startupGroup.hidden) shortcutsGroup.hidden = true;
+    startupGroup.nextElementSibling.after(firefoxpwaGroup);
+    startupGroup.nextElementSibling.nextElementSibling.after(shortcutsGroup);
   }
 
   handleOutOfScopePreferenceSwitch () {