Taskbar Divider Container

This cl includes
	- Taskbar Divider container implementation without click listenrs.

Test: Presubmit
Bug: 350571890
Flag: com.android.launcher3.enable_taskbar_customization
Change-Id: I07edd35c685b20e335d358aff2d15b09f6b73f14

quickstep/src/com/android/launcher3/taskbar/customization/TaskbarAllAppsButtonContainer.kt

@@ -47,7 +47,7 @@ constructor(
 
     override val spaceNeeded: Int
         get() {
-            return dpToPx(activityContext.taskbarSpecsEvaluator.taskbarIconSize.size.toFloat())
+            return dpToPx(activityContext.taskbarSpecsEvaluator!!.taskbarIconSize.size.toFloat())
         }
 
     init {
@@ -60,13 +60,13 @@ constructor(
             resources.getDrawable(
                 getAllAppsButton(activityContext.taskbarFeatureEvaluator.isTransient)
             )
-        val padding = activityContext.taskbarSpecsEvaluator.taskbarIconPadding
+        val padding = activityContext.taskbarSpecsEvaluator!!.taskbarIconPadding
 
         allAppsButton.setIconDrawable(drawable)
-        allAppsButton.setPadding(/* left= */ padding)
+        allAppsButton.setPadding(padding)
         allAppsButton.setForegroundTint(activityContext.getColor(R.color.all_apps_button_color))
 
-        // TODO(jagrutdesai) : add click listeners in future cl
+        // TODO(b/356465292) : add click listeners in future cl
         addView(allAppsButton)
     }
 

quickstep/src/com/android/launcher3/taskbar/customization/TaskbarDividerContainer.kt

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * 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.android.launcher3.taskbar.customization
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.util.AttributeSet
+import android.view.LayoutInflater
+import android.widget.LinearLayout
+import androidx.core.view.setPadding
+import com.android.launcher3.R
+import com.android.launcher3.Utilities.dpToPx
+import com.android.launcher3.taskbar.TaskbarActivityContext
+import com.android.launcher3.views.ActivityContext
+import com.android.launcher3.views.IconButtonView
+
+/** Taskbar divider view container for customizable taskbar. */
+class TaskbarDividerContainer
+@JvmOverloads
+constructor(
+    context: Context,
+    attrs: AttributeSet? = null,
+    defStyleAttr: Int = 0,
+) : LinearLayout(context, attrs), TaskbarContainer {
+
+    private val taskbarDivider: IconButtonView =
+        LayoutInflater.from(context).inflate(R.layout.taskbar_divider, this, false)
+            as IconButtonView
+    private val activityContext: TaskbarActivityContext = ActivityContext.lookupContext(context)
+
+    override val spaceNeeded: Int
+        get() {
+            return dpToPx(activityContext.taskbarSpecsEvaluator!!.taskbarIconSize.size.toFloat())
+        }
+
+    init {
+        setUpIcon()
+    }
+
+    @SuppressLint("UseCompatLoadingForDrawables")
+    fun setUpIcon() {
+        val drawable = resources.getDrawable(R.drawable.taskbar_divider_button)
+        val padding = activityContext.taskbarSpecsEvaluator!!.taskbarIconPadding
+
+        taskbarDivider.setIconDrawable(drawable)
+        taskbarDivider.setPadding(padding)
+
+        // TODO(b/356465292):: add click listeners in future cl
+        addView(taskbarDivider)
+    }
+}