PDFjs Permission (78 only)

diff --git a/README.md b/README.md
index e77e9d8c4d00508e197af25fcc7d933084bb8891..0e795918174a4b90e72fc3d6e96b33ab89564210 100644 (file)
--- a/README.md
+++ b/README.md
@@ -69,6 +69,7 @@ Policies can be specified using the [Group Policy templates on Windows](https://
 | **[`OverrideFirstRunPage`](#overridefirstrunpage)** | Override the first run page.
 | **[`OverridePostUpdatePage`](#overridepostupdatepage)** | Override the upgrade page.
 | **[`PasswordManagerEnabled`](#passwordmanagerenabled)** | Remove (some) access to the password manager.
 | **[`OverrideFirstRunPage`](#overridefirstrunpage)** | Override the first run page.
 | **[`OverridePostUpdatePage`](#overridepostupdatepage)** | Override the upgrade page.
 | **[`PasswordManagerEnabled`](#passwordmanagerenabled)** | Remove (some) access to the password manager.

+| **[`PDFjs`](#pdfjs)** | Disable or configure PDF.js, the built-in PDF viewer.

 | **[`Permissions`](#permissions)** | Set permissions associated with camera, microphone, location, and notifications.
 | **[`PopupBlocking`](#popupblocking)** | Configure the default pop-up window policy as well as origins for which pop-up windows are allowed.
 | **[`Preferences`](#preferences)** | Set and lock some preferences.
 | **[`Permissions`](#permissions)** | Set permissions associated with camera, microphone, location, and notifications.
 | **[`PopupBlocking`](#popupblocking)** | Configure the default pop-up window policy as well as origins for which pop-up windows are allowed.
 | **[`Preferences`](#preferences)** | Set and lock some preferences.


@@ -2964,6 +2965,54 @@ Value (string):
   }
 }
 ```
   }
 }
 ```

+### PDFjs
+Disable or configure PDF.js, the built-in PDF viewer.
+
+If `Enabled` is set to false, the built-in PDF viewer is disabled.
+
+If `EnablePermissions` is set to true, the built-in PDF viewer will honor document permissions like preventing the copying of text.
+
+**Compatibility:** Firefox 77, Firefox ESR 68.9\
+**CCK2 Equivalent:** N/A\
+**Preferences Affected:** `pdfjs.diabled`,`pdfjs.enablePermissions`
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\PDFjs\Enabled = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\PDFjs\EnablePermissions = 0x1 | 0x0
+```
+#### Windows (Intune)
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~PDFjs/PDFjs_Enabled
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~PDFjs/PDFjs_EnablePermissions
+```
+Value (string):
+```
+<enabled/>or <disabled/>
+```
+#### macOS
+```
+<dict>
+  <key>PDFjs</key>
+  <dict>
+    <key>Enabled</key>
+    <true/> | <false/>
+    <key><EnablePermissions</key>
+    <true/> | <false/>
+  </dict>
+</dict>
+```
+#### policies.json
+```
+{
+  "policies": {
+    "PSFjs": {
+      "Enabled": true | false,
+      "EnablePermissions": true | false
+    }
+}
+```

 ### Permissions
 Set permissions associated with camera, microphone, location, notifications, and autoplay. Because these are origins, not domains, entries with unique ports must be specified separately. See examples below.
 
 ### Permissions
 Set permissions associated with camera, microphone, location, notifications, and autoplay. Because these are origins, not domains, entries with unique ports must be specified separately. See examples below.
 

diff --git a/mac/org.mozilla.firefox.plist b/mac/org.mozilla.firefox.plist
index aa7f05ae32b2eee2db73260093dba71b20343fb5..f32e96d8d4bea4edae3d05c8a1eaa19e118a926d 100644 (file)
--- a/mac/org.mozilla.firefox.plist
+++ b/mac/org.mozilla.firefox.plist
@@ -218,7 +218,7 @@
                <dict>
                <key>Enabled</key>
                <false/>
                <dict>
                <key>Enabled</key>
                <false/>

-               <key><Locked</key>
+               <key>Locked</key>

                <false/>
        </dict>
        <key>Extensions</key>
                <false/>
        </dict>
        <key>Extensions</key>


@@ -335,6 +335,13 @@
        <string></string>
        <key>PasswordManagerEnabled</key>
        <false/>
        <string></string>
        <key>PasswordManagerEnabled</key>
        <false/>

+       <key>PDFjs</key>
+               <dict>
+               <key>Enabled</key>
+               <false/>
+               <key>EnablePermissions</key>
+               <false/>
+       </dict>

        <key>Permissions</key>
        <dict>
                <key>Camera</key>
        <key>Permissions</key>
        <dict>
                <key>Camera</key>

diff --git a/windows/de-DE/firefox.adml b/windows/de-DE/firefox.adml
index 8fa704215a4548db4a53c7646b29d76dfb829d28..b08581edca93d2074d18bad7d9cd15b6ae1728c7 100644 (file)
--- a/windows/de-DE/firefox.adml
+++ b/windows/de-DE/firefox.adml
@@ -50,6 +50,7 @@
       <string id="UserMessaging_group">Benutzer-Benachrichtigungen</string>
       <string id="DisabledCiphers_group">Disabled Ciphers</string>
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>
       <string id="UserMessaging_group">Benutzer-Benachrichtigungen</string>
       <string id="DisabledCiphers_group">Disabled Ciphers</string>
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>

+      <string id="PDFjs_group">PDFjs</string>

       <string id="Allow">Erlaubte Seiten</string>
       <string id="Block">Gesperrte Seiten</string>
       <string id="AppAutoUpdate">Automatisches Update</string>
       <string id="Allow">Erlaubte Seiten</string>
       <string id="Block">Gesperrte Seiten</string>
       <string id="AppAutoUpdate">Automatisches Update</string>


@@ -774,6 +775,14 @@ If this policy is enabled or not configured, encrypted media extensions (like Wi
       <string id="EncryptedMediaExtensions_Locked_Explain">If this policy is enabled and EncryptedMediaExtensions are disabled, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.
 
 If this policy is not disabled or not configured, it has no effect.</string>
       <string id="EncryptedMediaExtensions_Locked_Explain">If this policy is enabled and EncryptedMediaExtensions are disabled, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.
 
 If this policy is not disabled or not configured, it has no effect.</string>

+      <string id="PDFjs_Enabled">Enable PDFjs</string>
+      <string id="PDFjs_Enabled_Explain">If this policy is disabled, the built-in PDF viewer is not used.
+
+If this policy is enabled or not configured, the built-in PDF viewer is used.</string>
+      <string id="PDFjs_EnablePermissions">Enable Permissions</string>
+      <string id="PDFjs_EnablePermissions_Explain">If this policy is enabled, the built-in PDF viewer will honor document permissions like preventing the copying of text.
+
+If this policy is not disabled or not configured, document permissions are ignored.</string>

       <string id="Preferences_Boolean_Explain">Wenn diese Richtlinieneinstellung aktiviert ist, ist die Einstellung auf true gesperrt. Wenn diese Richtlinieneinstellung deaktiviert ist, ist die Einstellung auf false gesperrt.
 
 Für eine Beschreibung der Einstellung, siehe:
       <string id="Preferences_Boolean_Explain">Wenn diese Richtlinieneinstellung aktiviert ist, ist die Einstellung auf true gesperrt. Wenn diese Richtlinieneinstellung deaktiviert ist, ist die Einstellung auf false gesperrt.
 
 Für eine Beschreibung der Einstellung, siehe:

diff --git a/windows/en-US/firefox.adml b/windows/en-US/firefox.adml
index 26b31c4653ad1ee7e955aee624941f991869e405..caeaade1f1d66d90a8685ee9ec5428480bfee661 100644 (file)
--- a/windows/en-US/firefox.adml
+++ b/windows/en-US/firefox.adml
@@ -50,6 +50,7 @@
       <string id="UserMessaging_group">User Messaging</string>
       <string id="DisabledCiphers_group">Disabled Ciphers</string>
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>
       <string id="UserMessaging_group">User Messaging</string>
       <string id="DisabledCiphers_group">Disabled Ciphers</string>
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>

+      <string id="PDFjs_group">PDFjs</string>

       <string id="Allow">Allowed Sites</string>
       <string id="Block">Blocked Sites</string>
       <string id="AppAutoUpdate">Application Autoupdate</string>
       <string id="Allow">Allowed Sites</string>
       <string id="Block">Blocked Sites</string>
       <string id="AppAutoUpdate">Application Autoupdate</string>


@@ -776,6 +777,14 @@ If this policy is enabled or not configured, encrypted media extensions (like Wi
       <string id="EncryptedMediaExtensions_Locked_Explain">If this policy is enabled and EncryptedMediaExtensions are disabled, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.
 
 If this policy is not disabled or not configured, it has no effect.</string>
       <string id="EncryptedMediaExtensions_Locked_Explain">If this policy is enabled and EncryptedMediaExtensions are disabled, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.
 
 If this policy is not disabled or not configured, it has no effect.</string>

+      <string id="PDFjs_Enabled">Enable PDFjs</string>
+      <string id="PDFjs_Enabled_Explain">If this policy is disabled, the built-in PDF viewer is not used.
+
+If this policy is enabled or not configured, the built-in PDF viewer is used.</string>
+      <string id="PDFjs_EnablePermissions">Enable Permissions</string>
+      <string id="PDFjs_EnablePermissions_Explain">If this policy is enabled, the built-in PDF viewer will honor document permissions like preventing the copying of text.
+
+If this policy is not disabled or not configured, document permissions are ignored.</string>

       <string id="Preferences_Boolean_Explain">If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false.
 
 For a description of the preference, see:
       <string id="Preferences_Boolean_Explain">If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false.
 
 For a description of the preference, see:

diff --git a/windows/es-ES/firefox.adml b/windows/es-ES/firefox.adml
index 6be7969772afc612681f83be4e347dd4d67bf57c..e5916bbf6e5099eccf154d741377dc8b102d8366 100644 (file)
--- a/windows/es-ES/firefox.adml
+++ b/windows/es-ES/firefox.adml
@@ -50,6 +50,7 @@
       <string id="UserMessaging_group">User Messaging</string>
       <string id="DisabledCiphers_group">Disabled Ciphers</string>
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>
       <string id="UserMessaging_group">User Messaging</string>
       <string id="DisabledCiphers_group">Disabled Ciphers</string>
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>

+      <string id="PDFjs_group">PDFjs</string>

       <string id="Allow">Sitios permitidos</string>
       <string id="Block">Sitios bloqueados</string>
       <string id="AppAutoUpdate">Application Autoupdate</string>
       <string id="Allow">Sitios permitidos</string>
       <string id="Block">Sitios bloqueados</string>
       <string id="AppAutoUpdate">Application Autoupdate</string>


@@ -776,6 +777,14 @@ If this policy is enabled or not configured, encrypted media extensions (like Wi
       <string id="EncryptedMediaExtensions_Locked_Explain">If this policy is enabled and EncryptedMediaExtensions are disabled, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.
 
 If this policy is not disabled or not configured, it has no effect.</string>
       <string id="EncryptedMediaExtensions_Locked_Explain">If this policy is enabled and EncryptedMediaExtensions are disabled, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.
 
 If this policy is not disabled or not configured, it has no effect.</string>

+      <string id="PDFjs_Enabled">Enable PDFjs</string>
+      <string id="PDFjs_Enabled_Explain">If this policy is disabled, the built-in PDF viewer is not used.
+
+If this policy is enabled or not configured, the built-in PDF viewer is used.</string>
+      <string id="PDFjs_EnablePermissions">Enable Permissions</string>
+      <string id="PDFjs_EnablePermissions_Explain">If this policy is enabled, the built-in PDF viewer will honor document permissions like preventing the copying of text.
+
+If this policy is not disabled or not configured, document permissions are ignored.</string>

       <string id="Preferences_Boolean_Explain">Si esta política está habilitada, la preferencia se bloquea en true. Si esta política está deshabilitada, la preferencia está bloqueada en false.
 
 Para una descripción de la preferencia, visite:
       <string id="Preferences_Boolean_Explain">Si esta política está habilitada, la preferencia se bloquea en true. Si esta política está deshabilitada, la preferencia está bloqueada en false.
 
 Para una descripción de la preferencia, visite:

diff --git a/windows/firefox.admx b/windows/firefox.admx
index 7ae6e26856a2562c42d23fb46aad4b0f120b508b..4008453746da2d102664453743fb986dea735579 100644 (file)
--- a/windows/firefox.admx
+++ b/windows/firefox.admx
@@ -106,6 +106,9 @@
     <category displayName="$(string.EncryptedMediaExtensions_group)" name="EncryptedMediaExtensions">
       <parentCategory ref="firefox"/>
     </category>
     <category displayName="$(string.EncryptedMediaExtensions_group)" name="EncryptedMediaExtensions">
       <parentCategory ref="firefox"/>
     </category>

+    <category displayName="$(string.PDFjs_group)" name="PDFjs">
+      <parentCategory ref="firefox"/>
+    </category>

   </categories>
   <policies>
     <policy name="AppAutoUpdate" class="Both" displayName="$(string.AppAutoUpdate)" explainText="$(string.AppAutoUpdate_Explain)" key="Software\Policies\Mozilla\Firefox" valueName="AppAutoUpdate">
   </categories>
   <policies>
     <policy name="AppAutoUpdate" class="Both" displayName="$(string.AppAutoUpdate)" explainText="$(string.AppAutoUpdate_Explain)" key="Software\Policies\Mozilla\Firefox" valueName="AppAutoUpdate">


@@ -3559,5 +3562,25 @@
         <decimal value="0"/>
       </disabledValue>
     </policy>
         <decimal value="0"/>
       </disabledValue>
     </policy>

+    <policy name="PDFjs_Enabled" class="Both" displayName="$(string.PDFjs_Enabled)" explainText="$(string.PDFjs_Enabled_Explain)" key="Software\Policies\Mozilla\Firefox\PDFjs" valueName="Enabled">
+      <parentCategory ref="PDFjs"/>
+      <supportedOn ref="SUPPORTED_FF77_ONLY"/>
+      <enabledValue>
+        <decimal value="1"/>
+      </enabledValue>
+      <disabledValue>
+        <decimal value="0"/>
+      </disabledValue>
+    </policy>
+    <policy name="PDFjs_EnablePermissions" class="Both" displayName="$(string.PDFjs_EnablePermissions)" explainText="$(string.PDFjs_EnablePermissions_Explain)" key="Software\Policies\Mozilla\Firefox\PDFjs" valueName="EnablePermissions">
+      <parentCategory ref="PDFjs"/>
+      <supportedOn ref="SUPPORTED_FF77_ONLY"/>
+      <enabledValue>
+        <decimal value="1"/>
+      </enabledValue>
+      <disabledValue>
+        <decimal value="0"/>
+      </disabledValue>
+    </policy>

   </policies>
 </policyDefinitions>
   </policies>
 </policyDefinitions>

diff --git a/windows/fr-FR/firefox.adml b/windows/fr-FR/firefox.adml
index 5e697ba4568409f5f2fbd1ec2b97019f16a43c40..7513de6c77957151d970dd169b0a648c3c2c4634 100644 (file)
--- a/windows/fr-FR/firefox.adml
+++ b/windows/fr-FR/firefox.adml
@@ -50,6 +50,7 @@
       <string id="UserMessaging_group">User Messaging</string>\r
       <string id="DisabledCiphers_group">Disabled Ciphers</string>\r
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>\r
       <string id="UserMessaging_group">User Messaging</string>\r
       <string id="DisabledCiphers_group">Disabled Ciphers</string>\r
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>\r

+      <string id="PDFjs_group">PDFjs</string>\r

       <string id="Allow">Sites autorisés</string>\r
       <string id="Block">Sites bloqués</string>\r
       <string id="AppAutoUpdate">Application Autoupdate</string>\r
       <string id="Allow">Sites autorisés</string>\r
       <string id="Block">Sites bloqués</string>\r
       <string id="AppAutoUpdate">Application Autoupdate</string>\r


@@ -775,6 +776,14 @@ If this policy is enabled or not configured, encrypted media extensions (like Wi
       <string id="EncryptedMediaExtensions_Locked_Explain">If this policy is enabled and EncryptedMediaExtensions are disabled, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.\r
 \r
 If this policy is not disabled or not configured, it has no effect.</string>\r
       <string id="EncryptedMediaExtensions_Locked_Explain">If this policy is enabled and EncryptedMediaExtensions are disabled, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.\r
 \r
 If this policy is not disabled or not configured, it has no effect.</string>\r

+      <string id="PDFjs_Enabled">Enable PDFjs</string>\r
+      <string id="PDFjs_Enabled_Explain">If this policy is disabled, the built-in PDF viewer is not used.\r
+\r
+If this policy is enabled or not configured, the built-in PDF viewer is used.</string>\r
+      <string id="PDFjs_EnablePermissions">Enable Permissions</string>\r
+      <string id="PDFjs_EnablePermissions_Explain">If this policy is enabled, the built-in PDF viewer will honor document permissions like preventing the copying of text.\r
+\r
+If this policy is not disabled or not configured, document permissions are ignored.</string>\r

       <string id="Preferences_Boolean_Explain">Si cette stratégie est activée, la préférence est verrouillée sur true. Si cette stratégie est désactivée, la préférence est verrouillée sur false.\r
 \r
 Pour une description de la préférence, voir:\r
       <string id="Preferences_Boolean_Explain">Si cette stratégie est activée, la préférence est verrouillée sur true. Si cette stratégie est désactivée, la préférence est verrouillée sur false.\r
 \r
 Pour une description de la préférence, voir:\r

diff --git a/windows/it-IT/firefox.adml b/windows/it-IT/firefox.adml
index 81e03d2f89ed1caca8b88361760cfdcb0f4e0297..4eeafabbaf4b12a12771bede69228a204508b62f 100644 (file)
--- a/windows/it-IT/firefox.adml
+++ b/windows/it-IT/firefox.adml
@@ -50,6 +50,7 @@
       <string id="UserMessaging_group">Messaggi utente</string>
       <string id="DisabledCiphers_group">Cifrari disabilitati</string>
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>
       <string id="UserMessaging_group">Messaggi utente</string>
       <string id="DisabledCiphers_group">Cifrari disabilitati</string>
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>

+      <string id="PDFjs_group">PDFjs</string>

       <string id="Allow">Siti consentiti</string>
       <string id="Block">Siti bloccati</string>
       <string id="AppAutoUpdate">Aggiornamento automatico applicazione</string>
       <string id="Allow">Siti consentiti</string>
       <string id="Block">Siti bloccati</string>
       <string id="AppAutoUpdate">Aggiornamento automatico applicazione</string>


@@ -776,6 +777,14 @@ If this policy is enabled or not configured, encrypted media extensions (like Wi
       <string id="EncryptedMediaExtensions_Locked_Explain">If this policy is enabled and EncryptedMediaExtensions are disabled, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.
 
 If this policy is not disabled or not configured, it has no effect.</string>
       <string id="EncryptedMediaExtensions_Locked_Explain">If this policy is enabled and EncryptedMediaExtensions are disabled, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.
 
 If this policy is not disabled or not configured, it has no effect.</string>

+      <string id="PDFjs_Enabled">Enable PDFjs</string>
+      <string id="PDFjs_Enabled_Explain">If this policy is disabled, the built-in PDF viewer is not used.
+
+If this policy is enabled or not configured, the built-in PDF viewer is used.</string>
+      <string id="PDFjs_EnablePermissions">Enable Permissions</string>
+      <string id="PDFjs_EnablePermissions_Explain">If this policy is enabled, the built-in PDF viewer will honor document permissions like preventing the copying of text.
+
+If this policy is not disabled or not configured, document permissions are ignored.</string>

       <string id="Preferences_Boolean_Explain">Se questo criterio è abilitato, la preferenza è impostata a Vero e resa non modificabile. Se questo criterio è disabilitato, la preferenza è impostata a Falso e resa non modificabile.
 
 Per una descrizione della preferenza, si veda:
       <string id="Preferences_Boolean_Explain">Se questo criterio è abilitato, la preferenza è impostata a Vero e resa non modificabile. Se questo criterio è disabilitato, la preferenza è impostata a Falso e resa non modificabile.
 
 Per una descrizione della preferenza, si veda:

diff --git a/windows/zh-TW/firefox.adml b/windows/zh-TW/firefox.adml
index 39d89e744cdf81287f0c6a2b8a2a8831ebdc933b..6ceff98dbd375340c30112cbeb09925c971c8da5 100644 (file)
--- a/windows/zh-TW/firefox.adml
+++ b/windows/zh-TW/firefox.adml
@@ -50,6 +50,7 @@
       <string id="UserMessaging_group">顯示給使用者的訊息</string>
       <string id="DisabledCiphers_group">Disabled Ciphers</string>
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>
       <string id="UserMessaging_group">顯示給使用者的訊息</string>
       <string id="DisabledCiphers_group">Disabled Ciphers</string>
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>

+      <string id="PDFjs_group">PDFjs</string>

       <string id="Allow">允許的網站</string>
       <string id="Block">封鎖的網站</string>
       <string id="AppAutoUpdate">應用程式自動更新</string>
       <string id="Allow">允許的網站</string>
       <string id="Block">封鎖的網站</string>
       <string id="AppAutoUpdate">應用程式自動更新</string>


@@ -774,6 +775,14 @@ If this policy is enabled or not configured, encrypted media extensions (like Wi
       <string id="EncryptedMediaExtensions_Locked_Explain">If this policy is enabled and EncryptedMediaExtensions are disabled, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.
 
 If this policy is not disabled or not configured, it has no effect.</string>
       <string id="EncryptedMediaExtensions_Locked_Explain">If this policy is enabled and EncryptedMediaExtensions are disabled, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.
 
 If this policy is not disabled or not configured, it has no effect.</string>

+      <string id="PDFjs_Enabled">Enable PDFjs</string>
+      <string id="PDFjs_Enabled_Explain">If this policy is disabled, the built-in PDF viewer is not used.
+
+If this policy is enabled or not configured, the built-in PDF viewer is used.</string>
+      <string id="PDFjs_EnablePermissions">Enable Permissions</string>
+      <string id="PDFjs_EnablePermissions_Explain">If this policy is enabled, the built-in PDF viewer will honor document permissions like preventing the copying of text.
+
+If this policy is not disabled or not configured, document permissions are ignored.</string>

       <string id="Preferences_Boolean_Explain">若啟用此原則，偏好設定將鎖定為 true。若停用此原則，偏好設定則鎖定為 false。
 
 若需要偏好設定的詳細說明，請參考：
       <string id="Preferences_Boolean_Explain">若啟用此原則，偏好設定將鎖定為 true。若停用此原則，偏好設定則鎖定為 false。
 
 若需要偏好設定的詳細說明，請參考：