Quick win: Animate omnibar with keyboard

app/src/main/java/com/duckduckgo/app/browser/BrowserActivity.kt

@@ -35,6 +35,7 @@ import androidx.activity.OnBackPressedCallback
 import androidx.activity.result.ActivityResult
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.annotation.VisibleForTesting
+import androidx.core.view.ViewCompat
 import androidx.core.view.isVisible
 import androidx.core.view.postDelayed
 import androidx.lifecycle.Lifecycle.State.STARTED
@@ -64,6 +65,7 @@ import com.duckduckgo.app.browser.shortcut.ShortcutBuilder
 import com.duckduckgo.app.browser.tabs.TabManager
 import com.duckduckgo.app.browser.tabs.TabManager.TabModel
 import com.duckduckgo.app.browser.tabs.adapter.TabPagerAdapter
+import com.duckduckgo.app.browser.ui.InsetsWithKeyboardCallback
 import com.duckduckgo.app.browser.webview.RealMaliciousSiteBlockerWebViewIntegration
 import com.duckduckgo.app.di.AppCoroutineScope
 import com.duckduckgo.app.dispatchers.ExternalIntentProcessingState
@@ -368,6 +370,10 @@ open class BrowserActivity : DuckDuckGoActivity() {
         }
         configureOnBackPressedListener()
         showNewAddressBarOptionChoiceScreen()
+
+        val insetsWithKeyboardCallback = InsetsWithKeyboardCallback(window)
+        ViewCompat.setOnApplyWindowInsetsListener(binding.root, insetsWithKeyboardCallback)
+        ViewCompat.setWindowInsetsAnimationCallback(binding.root, insetsWithKeyboardCallback)
     }
 
     override fun onSaveInstanceState(outState: Bundle) {

app/src/main/java/com/duckduckgo/app/browser/BrowserTabFragment.kt

@@ -148,6 +148,7 @@ import com.duckduckgo.app.browser.omnibar.Omnibar.OmnibarTextState
 import com.duckduckgo.app.browser.omnibar.Omnibar.ViewMode
 import com.duckduckgo.app.browser.omnibar.OmnibarItemPressedListener
 import com.duckduckgo.app.browser.omnibar.QueryOrigin
+import com.duckduckgo.app.browser.omnibar.model.OmnibarPosition
 import com.duckduckgo.app.browser.omnibar.model.OmnibarPosition.BOTTOM
 import com.duckduckgo.app.browser.omnibar.model.OmnibarPosition.TOP
 import com.duckduckgo.app.browser.print.PrintDocumentAdapterFactory
@@ -157,6 +158,7 @@ import com.duckduckgo.app.browser.session.WebViewSessionStorage
 import com.duckduckgo.app.browser.shortcut.ShortcutBuilder
 import com.duckduckgo.app.browser.tabpreview.WebViewPreviewGenerator
 import com.duckduckgo.app.browser.tabpreview.WebViewPreviewPersister
+import com.duckduckgo.app.browser.ui.InsetsWithKeyboardAnimationCallback
 import com.duckduckgo.app.browser.ui.dialogs.AutomaticFireproofDialogOptions
 import com.duckduckgo.app.browser.ui.dialogs.LaunchInExternalAppOptions
 import com.duckduckgo.app.browser.ui.dialogs.widgetprompt.AlternativeHomeScreenWidgetBottomSheetDialog
@@ -1044,6 +1046,11 @@ class BrowserTabFragment :
         }
 
         launchDownloadMessagesJob()
+
+        if (omnibar.omnibarPosition == OmnibarPosition.BOTTOM) {
+            val insetsWithKeyboardAnimationCallback = InsetsWithKeyboardAnimationCallback(omnibar.newOmnibar)
+            ViewCompat.setWindowInsetsAnimationCallback(omnibar.newOmnibar, insetsWithKeyboardAnimationCallback)
+        }
     }
 
     private fun updateOrDeleteWebViewPreview() {

app/src/main/java/com/duckduckgo/app/browser/ui/InsetsWithKeyboardAnimationCallback.kt

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2025 DuckDuckGo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.duckduckgo.app.browser.ui
+
+import android.view.View
+import androidx.core.graphics.Insets
+import androidx.core.view.WindowInsetsAnimationCompat
+import androidx.core.view.WindowInsetsCompat
+
+// Credit: https://github.com/johncodeos-blog/MoveViewWithKeyboardAndroidExample
+class InsetsWithKeyboardAnimationCallback(private val view: View) : WindowInsetsAnimationCompat.Callback(DISPATCH_MODE_STOP) {
+    override fun onProgress(insets: WindowInsetsCompat, runningAnimations: MutableList<WindowInsetsAnimationCompat>): WindowInsetsCompat {
+        val imeInsets = insets.getInsets(WindowInsetsCompat.Type.ime())
+        val systemInsets = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+
+        val diff = Insets.subtract(imeInsets, systemInsets).let {
+            Insets.max(it, Insets.NONE)
+        }
+
+        view.translationX = (diff.left - diff.right).toFloat()
+        view.translationY = (diff.top - diff.bottom).toFloat()
+
+        return insets
+    }
+
+    override fun onEnd(animation: WindowInsetsAnimationCompat) {
+        view.translationX = 0f
+        view.translationY = 0f
+    }
+}

app/src/main/java/com/duckduckgo/app/browser/ui/InsetsWithKeyboardCallback.kt

@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2025 DuckDuckGo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.duckduckgo.app.browser.ui
+
+import android.os.Build
+import android.view.View
+import android.view.Window
+import android.view.WindowManager
+import androidx.core.view.*
+
+// Credit: https://github.com/johncodeos-blog/MoveViewWithKeyboardAndroidExample
+class InsetsWithKeyboardCallback(window: Window) : OnApplyWindowInsetsListener, WindowInsetsAnimationCompat.Callback(
+    DISPATCH_MODE_CONTINUE_ON_SUBTREE,
+) {
+    private var deferredInsets = false
+    private var view: View? = null
+    private var lastWindowInsets: WindowInsetsCompat? = null
+
+    init {
+        WindowCompat.setDecorFitsSystemWindows(window, false)
+
+        // For better support for devices API 29 and lower
+        if (Build.VERSION.SDK_INT <= 29) {
+            @Suppress("DEPRECATION")
+            window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE)
+        }
+    }
+
+    override fun onApplyWindowInsets(v: View, insets: WindowInsetsCompat): WindowInsetsCompat {
+        view = v
+        lastWindowInsets = insets
+        val types = when {
+            // When the deferred flag is enabled, we only use the systemBars() insets
+            deferredInsets -> WindowInsetsCompat.Type.systemBars()
+            // When the deferred flag is disabled, we use combination of the the systemBars() and ime() insets
+            else -> WindowInsetsCompat.Type.systemBars() + WindowInsetsCompat.Type.ime()
+        }
+
+        val typeInsets = insets.getInsets(types)
+        v.setPadding(typeInsets.left, typeInsets.top, typeInsets.right, typeInsets.bottom)
+        return WindowInsetsCompat.CONSUMED
+    }
+
+    override fun onPrepare(animation: WindowInsetsAnimationCompat) {
+        if (animation.typeMask and WindowInsetsCompat.Type.ime() != 0) {
+            // When the IME is not visible, we defer the WindowInsetsCompat.Type.ime() insets
+            deferredInsets = true
+        }
+    }
+
+    override fun onProgress(insets: WindowInsetsCompat, runningAnimations: MutableList<WindowInsetsAnimationCompat>): WindowInsetsCompat {
+        return insets
+    }
+
+    override fun onEnd(animation: WindowInsetsAnimationCompat) {
+        if (deferredInsets && (animation.typeMask and WindowInsetsCompat.Type.ime()) != 0) {
+            // When the IME animation has finished and the IME inset has been deferred, we reset the flag
+            deferredInsets = false
+
+            // We dispatch insets manually because if we let the normal dispatch cycle handle it, this will happen too late and cause a visual flicker
+            // So we dispatch the latest WindowInsets to the view
+            if (lastWindowInsets != null && view != null) {
+                ViewCompat.dispatchApplyWindowInsets(view!!, lastWindowInsets!!)
+            }
+        }
+    }
+}

app/src/main/java/com/duckduckgo/app/browser/webview/BrowserContainerLayoutBehavior.kt

@@ -27,6 +27,7 @@ import com.duckduckgo.app.browser.omnibar.OmnibarLayout
 import com.duckduckgo.app.browser.omnibar.model.OmnibarPosition
 import com.google.android.material.appbar.AppBarLayout
 import com.google.android.material.appbar.AppBarLayout.ScrollingViewBehavior
+import kotlin.math.roundToInt
 
 /**
  * A [ScrollingViewBehavior] that observes [AppBarLayout] (top omnibar) present in the view hierarchy and applies top offset to the child view
@@ -108,7 +109,9 @@ private fun offsetByBottomElementVisibleHeight(
     val newBottomPadding = if (dependency.isGone) {
         0
     } else {
-        dependency.measuredHeight - dependency.translationY.toInt()
+        // Clamp negative translation (e.g., IME pushing the bar up) to avoid inflating padding
+        val clampedTranslationY = if (dependency.translationY > 0f) dependency.translationY.roundToInt() else 0
+        (dependency.measuredHeight - clampedTranslationY).coerceAtLeast(0)
     }
     return if (child.paddingBottom != newBottomPadding) {
         child.setPadding(