For #4761 - Adds setting to control `forceUserScalableEnabled`

components/browser/engine-gecko-nightly/src/main/java/mozilla/components/browser/engine/gecko/GeckoEngine.kt

@@ -333,6 +333,10 @@ class GeckoEngine(
                     runtime.settings.fontSizeFactor = it
                 }
             }
+
+        override var forceUserScalableContent: Boolean
+            get() = runtime.settings.forceUserScalableEnabled
+            set(value) { runtime.settings.forceUserScalableEnabled = value }
     }.apply {
         defaultSettings?.let {
             this.javascriptEnabled = it.javascriptEnabled
@@ -349,6 +353,7 @@ class GeckoEngine(
             this.suspendMediaWhenInactive = it.suspendMediaWhenInactive
             this.fontInflationEnabled = it.fontInflationEnabled
             this.fontSizeFactor = it.fontSizeFactor
+            this.forceUserScalableContent = it.forceUserScalableContent
         }
     }
 }

components/browser/engine-gecko-nightly/src/test/java/mozilla/components/browser/engine/gecko/GeckoEngineTest.kt

@@ -88,6 +88,7 @@ class GeckoEngineTest {
         whenever(runtimeSettings.automaticFontSizeAdjustment).thenReturn(true)
         whenever(runtimeSettings.fontInflationEnabled).thenReturn(true)
         whenever(runtimeSettings.fontSizeFactor).thenReturn(1.0F)
+        whenever(runtimeSettings.forceUserScalableEnabled).thenReturn(false)
         whenever(runtimeSettings.contentBlocking).thenReturn(contentBlockingSettings)
         whenever(runtimeSettings.preferredColorScheme).thenReturn(GeckoRuntimeSettings.COLOR_SCHEME_SYSTEM)
         whenever(runtimeSettings.autoplayDefault).thenReturn(GeckoRuntimeSettings.AUTOPLAY_DEFAULT_ALLOWED)
@@ -118,6 +119,10 @@ class GeckoEngineTest {
         engine.settings.fontSizeFactor = 2.0F
         verify(runtimeSettings).fontSizeFactor = 2.0F
 
+        assertFalse(engine.settings.forceUserScalableContent)
+        engine.settings.forceUserScalableContent = true
+        verify(runtimeSettings).forceUserScalableEnabled = true
+
         assertFalse(engine.settings.remoteDebuggingEnabled)
         engine.settings.remoteDebuggingEnabled = true
         verify(runtimeSettings).remoteDebuggingEnabled = true
@@ -328,7 +333,8 @@ class GeckoEngineTest {
                 userAgentString = "test-ua",
                 preferredColorScheme = PreferredColorScheme.Light,
                 allowAutoplayMedia = false,
-                suspendMediaWhenInactive = true
+                suspendMediaWhenInactive = true,
+                forceUserScalableContent = false
             ), runtime)
 
         verify(runtimeSettings).javaScriptEnabled = false
@@ -338,6 +344,7 @@ class GeckoEngineTest {
         verify(runtimeSettings).fontSizeFactor = 2.0F
         verify(runtimeSettings).remoteDebuggingEnabled = true
         verify(runtimeSettings).autoplayDefault = GeckoRuntimeSettings.AUTOPLAY_DEFAULT_BLOCKED
+        verify(runtimeSettings).forceUserScalableEnabled = false
 
         val trackingStrictCategories = TrackingProtectionPolicy.strict().trackingCategories.sumBy { it.id }
         val artificialCategory =

components/concept/engine/src/main/java/mozilla/components/concept/engine/Settings.kt

@@ -169,6 +169,11 @@ abstract class Settings {
      * Setting to control the font size factor. All font sizes will be multiplied by this factor.
      */
     open var fontSizeFactor: Float? by UnsupportedSetting()
+
+    /**
+     * Setting to force the ability to scale the content
+     */
+    open var forceUserScalableContent: Boolean by UnsupportedSetting()
 }
 
 /**
@@ -202,7 +207,8 @@ data class DefaultSettings(
     override var allowAutoplayMedia: Boolean = true,
     override var suspendMediaWhenInactive: Boolean = false,
     override var fontInflationEnabled: Boolean? = null,
-    override var fontSizeFactor: Float? = null
+    override var fontSizeFactor: Float? = null,
+    override var forceUserScalableContent: Boolean = false
 ) : Settings()
 
 class UnsupportedSetting<T> {

components/concept/engine/src/test/java/mozilla/components/concept/engine/SettingsTest.kt

@@ -78,7 +78,9 @@ class SettingsTest {
             { settings.fontInflationEnabled },
             { settings.fontInflationEnabled = false },
             { settings.fontSizeFactor },
-            { settings.fontSizeFactor = 1.0F }
+            { settings.fontSizeFactor = 1.0F },
+            { settings.forceUserScalableContent },
+            { settings.forceUserScalableContent = true }
         )
     }
 
@@ -118,6 +120,7 @@ class SettingsTest {
         assertFalse(settings.suspendMediaWhenInactive)
         assertNull(settings.fontInflationEnabled)
         assertNull(settings.fontSizeFactor)
+        assertFalse(settings.forceUserScalableContent)
 
         val interceptor: RequestInterceptor = mock()
         val historyTrackingDelegate: HistoryTrackingDelegate = mock()
@@ -150,7 +153,8 @@ class SettingsTest {
             allowAutoplayMedia = false,
             suspendMediaWhenInactive = true,
             fontInflationEnabled = false,
-            fontSizeFactor = 2.0F)
+            fontSizeFactor = 2.0F,
+            forceUserScalableContent = true)
 
         assertFalse(defaultSettings.domStorageEnabled)
         assertFalse(defaultSettings.javascriptEnabled)
@@ -180,5 +184,6 @@ class SettingsTest {
         assertTrue(defaultSettings.suspendMediaWhenInactive)
         assertFalse(defaultSettings.fontInflationEnabled!!)
         assertEquals(2.0F, defaultSettings.fontSizeFactor)
+        assertTrue(defaultSettings.forceUserScalableContent)
     }
 }
\ No newline at end of file

docs/changelog.md

@@ -15,6 +15,12 @@ permalink: /changelog/
 * **browser-menu**
    * Adds the ability to create a BrowserMenuCategory, a menu item that defines a category for other menu items
 
+* **concept-engine**
+   * Adds the setting `forceUserScalableContent`.
+
+* **engine-gecko-nightly**
+   * Implements the setting `forceUserScalableContent`.
+
 # 17.0.0
 
 * [Commits](https://github.com/mozilla-mobile/android-components/compare/v16.0.0...v17.0.0)