implement UiWidget.createView()

uidesigner/src/main/java/com/itsaky/androidide/uidesigner/drag/WidgetDragListener.kt

@@ -0,0 +1,30 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.uidesigner.drag
+
+import android.view.DragEvent
+import android.view.View
+
+/**
+ * @author Akash Yadav
+ */
+class WidgetDragListener : View.OnDragListener {
+  override fun onDrag(v: View, event: DragEvent): Boolean {
+    TODO("Not yet implemented")
+  }
+}

uidesigner/src/main/java/com/itsaky/androidide/uidesigner/fragments/DesignerWorkspaceFragment.kt

@@ -27,7 +27,6 @@ import com.itsaky.androidide.fragments.BaseFragment
 import com.itsaky.androidide.inflater.IInflateEventsListener
 import com.itsaky.androidide.inflater.ILayoutInflater
 import com.itsaky.androidide.inflater.OnInflateViewEvent
-import com.itsaky.androidide.inflater.internal.utils.startParse
 import com.itsaky.androidide.uidesigner.UIDesignerActivity
 import com.itsaky.androidide.uidesigner.databinding.FragmentDesignerWorkspaceBinding
 import com.itsaky.androidide.uidesigner.databinding.LayoutDesignerErrorBinding
@@ -94,11 +93,7 @@ class DesignerWorkspaceFragment : BaseFragment() {
     super.onDestroyView()
     this.binding = null
   }
-
-  private fun createErrorView(@StringRes message: Int): View {
-    return createErrorView(getString(message))
-  }
-
+  
   private fun createErrorView(message: String): View {
     return LayoutDesignerErrorBinding.inflate(layoutInflater).let {
       it.root.text = message

uidesigner/src/main/java/com/itsaky/androidide/uidesigner/models/UiWidget.kt

@@ -17,10 +17,16 @@
 
 package com.itsaky.androidide.uidesigner.models
 
+import android.content.Context
 import android.view.View
+import android.view.ViewGroup
 import androidx.annotation.DrawableRes
 import androidx.annotation.StringRes
 import com.itsaky.androidide.inflater.IView
+import com.itsaky.androidide.inflater.internal.LayoutFile
+import com.itsaky.androidide.inflater.internal.ViewGroupImpl
+import com.itsaky.androidide.inflater.internal.ViewImpl
+import com.itsaky.androidide.inflater.internal.utils.ViewFactory
 
 open class UiWidget(val name: String, @StringRes val label: Int, @DrawableRes val icon: Int) {
   constructor(
@@ -29,8 +35,18 @@ open class UiWidget(val name: String, @StringRes val label: Int, @DrawableRes va
     @DrawableRes icon: Int
   ) : this(klass.name, label, icon)
 
-  fun createView(): IView {
-    TODO()
+  /**
+   * Creates an [IView] for this widget.
+   *
+   * @param context The context that will be used for creating (View)[android.view.View] instance.
+   * @param layoutFile The layout file that is being edited.
+   */
+  fun createView(context: Context, layoutFile: LayoutFile): IView {
+    val v = ViewFactory.createViewInstance(name, context)
+    if (v is ViewGroup) {
+      return ViewGroupImpl(layoutFile, name, v)
+    }
+    return ViewImpl(layoutFile, name, v)
   }
 
   override fun equals(other: Any?): Boolean {

uidesigner/src/main/java/com/itsaky/androidide/uidesigner/utils/ForwardingViewGroup.kt

@@ -0,0 +1,27 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.uidesigner.utils
+
+import com.itsaky.androidide.inflater.IViewGroup
+
+/**
+ * An [IViewGroup] implementation that forwards all calls to [src].
+ *
+ * @author Akash Yadav
+ */
+class ForwardingViewGroup(val src: IViewGroup) : IViewGroup by src

xml-inflater/src/main/java/com/itsaky/androidide/inflater/internal/LayoutInflaterImpl.kt

@@ -17,7 +17,6 @@
 
 package com.itsaky.androidide.inflater.internal
 
-import android.content.Context
 import android.view.View
 import android.view.ViewGroup
 import android.view.ViewGroup.LayoutParams
@@ -45,6 +44,7 @@ import com.itsaky.androidide.inflater.InflationStartEvent
 import com.itsaky.androidide.inflater.OnApplyAttributeEvent
 import com.itsaky.androidide.inflater.OnInflateViewEvent
 import com.itsaky.androidide.inflater.internal.utils.IDTable
+import com.itsaky.androidide.inflater.internal.utils.ViewFactory.createViewInstance
 import com.itsaky.androidide.inflater.internal.utils.endParse
 import com.itsaky.androidide.inflater.internal.utils.isParsing
 import com.itsaky.androidide.inflater.internal.utils.parseLayoutReference
@@ -282,7 +282,7 @@ open class LayoutInflaterImpl : ILayoutInflater() {
     widgets: WidgetTable,
   ): IView {
     return try {
-      val v = createViewInstance(widget, parent)
+      val v = createViewInstance(widget.qualifiedName, parent.context)
       if (v is ViewGroup) {
         return ViewGroupImpl(currentLayoutFile, widget.qualifiedName, v)
       }
@@ -351,12 +351,6 @@ open class LayoutInflaterImpl : ILayoutInflater() {
     return processor to module
   }
 
-  private fun createViewInstance(widget: Widget, parent: ViewGroup): View {
-    val klass = javaClass.classLoader!!.loadClass(widget.qualifiedName)
-    val constructor = klass.getConstructor(Context::class.java)
-    return constructor.newInstance(parent.context) as View
-  }
-
   private fun onCreateUnsupportedView(message: String, parent: ViewGroup): IView {
     return ErrorView(currentLayoutFile, parent.context, message)
   }

xml-inflater/src/main/java/com/itsaky/androidide/inflater/internal/utils/ViewFactory.kt

@@ -0,0 +1,38 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.inflater.internal.utils
+
+import android.content.Context
+import android.view.View
+import com.itsaky.androidide.utils.ILogger
+
+/** @author Akash Yadav */
+object ViewFactory {
+  private val log = ILogger.newInstance("ViewFactory")
+
+  fun createViewInstance(name: String, context: Context): View {
+    return try {
+      val klass = javaClass.classLoader!!.loadClass(name)
+      val constructor = klass.getConstructor(Context::class.java)
+      constructor.newInstance(context) as View
+    } catch (err: Throwable) {
+      log.error(err)
+      throw RuntimeException(err)
+    }
+  }
+}