Merge pull request #6 from 5AbhishekSaxena/dev/toast-builder

Dev/toast builder

app/src/main/java/in/abhisheksaxena/toasterexample/MainActivity.kt

@@ -3,7 +3,6 @@ package `in`.abhisheksaxena.toasterexample
 import `in`.abhisheksaxena.toaster.Toaster
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
-import android.widget.Toast
 import kotlinx.android.synthetic.main.activity_main.*
 
 class MainActivity : AppCompatActivity() {
@@ -12,12 +11,25 @@ class MainActivity : AppCompatActivity() {
         setContentView(R.layout.activity_main)
 
         val message = "Some message"
-        Toast.makeText(this, message, Toast.LENGTH_SHORT).show()
         button.setOnClickListener {
             Toaster.pop(
                 this,
                 message,
-                R.drawable.ic_baseline_all_inclusive_24
+                Toaster.LENGTH_SHORT
+            ).show()
+        }
+
+        builder_button.setOnClickListener {
+            val toastBuilder = Toaster.Builder(this)
+                .setMessage("Some default message")
+            Toaster.pop(toastBuilder.make()).show()
+        }
+
+        error_button.setOnClickListener {
+            Toaster.popError(
+                this,
+                "This is an error message",
+                Toaster.LENGTH_SHORT
             ).show()
         }
     }

app/src/main/res/layout/activity_main.xml

@@ -10,10 +10,33 @@
         android:id="@+id/button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_marginBottom="@dimen/margin_default"
         android:text="Show toast"
+        app:layout_constraintBottom_toTopOf="@id/builder_button"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_chainStyle="packed" />
+
+    <Button
+        android:id="@+id/builder_button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="@dimen/margin_default"
+        android:text="Show toast using Builder"
+        app:layout_constraintBottom_toTopOf="@id/error_button"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/button" />
+
+    <Button
+        android:id="@+id/error_button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Show Error toast"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toBottomOf="@id/builder_button" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>

toaster/src/main/java/in/abhisheksaxena/toaster/Toaster.kt

@@ -2,45 +2,152 @@ package `in`.abhisheksaxena.toaster
 
 import android.content.Context
 import android.view.LayoutInflater
+import android.view.View
 import android.widget.ImageView
 import android.widget.TextView
 import android.widget.Toast
 import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.core.content.ContextCompat
 
 
 /**
  * @author Abhishek Saxena
  * @since 17-08-2020 06:25
  */
 
-object Toaster {
+class Toaster private constructor(
+    private val context: Context,
+    private var message: CharSequence,
+    private var duration: Int
+) {
 
+    private var rootView: View? = null
+    private var leftDrawableRes: Int? = null
+
+    companion object {
         const val LENGTH_SHORT = Toast.LENGTH_SHORT
         const val LENGTH_LONG = Toast.LENGTH_LONG
 
         fun pop(
             context: Context,
             message: CharSequence,
-            drawableRes: Int? = null,
-            duration: Int = LENGTH_SHORT
+            duration: Int
+        ): Toast {
+            return pop(prepare(context, message, duration))
+        }
+
+        fun pop(
+            context: Context,
+            message: CharSequence,
+            drawableRes: Int,
+            duration: Int
+        ): Toast {
+            return pop(prepare(context, message, drawableRes, duration))
+        }
+
+        fun pop(toaster: Toaster): Toast {
+            val toast = Toast(toaster.context)
+            toast.duration = toaster.duration
+            toast.view = toaster.rootView
+            return toast
+        }
+
+        fun popError(
+            context: Context,
+            message: CharSequence,
+            duration: Int
         ): Toast {
+            return pop(prepareError(context, message, duration))
+        }
+
+        private fun prepare(context: Context, message: CharSequence, duration: Int): Toaster {
+            return Builder(context)
+                .setMessage(message)
+                .setDuration(duration)
+                .make()
+        }
+
+        private fun prepare(
+            context: Context,
+            message: CharSequence,
+            drawableRes: Int?,
+            duration: Int
+        ): Toaster {
+            return Builder(context)
+                .setMessage(message)
+                .apply {
+                    drawableRes?.let {
+                        setLeftDrawable(it)
+                    }
+                }
+                .setDuration(duration)
+                .make()
+        }
+
+        private fun prepareError(context: Context, message: CharSequence, duration: Int): Toaster {
+            return Builder(context)
+                .setMessage(message)
+                .setLeftDrawable(R.drawable.ic_baseline_error_24)
+                .setLeftDrawableTint(Colors.ERROR)
+                .setDuration(duration)
+                .make()
+        }
+    }
+
+    class Builder(private val context: Context) {
 
-            val toast = Toast(context)
+        private val rootView: View
+        private var messageTextView: TextView? = null
+        private var leftDrawable: ImageView? = null
+        private var leftDrawableRes: Int? = null
 
+        private var message: CharSequence = ""
+        private var duration: Int = LENGTH_SHORT
+
+        init {
+            rootView = initView(context)
+        }
+
+        private fun initView(context: Context): View {
             val inflater =
                 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
             val rootView = inflater.inflate(R.layout.layout_toast, ConstraintLayout(context), false)
 
-            val messageTextView = rootView.findViewById<TextView>(R.id.message_text_view)
-            messageTextView.text = message
+            messageTextView = rootView.findViewById(R.id.message_text_view)
+            leftDrawable = rootView.findViewById(R.id.left_drawable_image_view)
+
+            return rootView
+        }
+
+        fun setMessage(message: CharSequence) = apply {
+            this.message = message
+            messageTextView?.text = message
+        }
+
+        fun setLeftDrawable(leftDrawableRes: Int) = apply {
+            this.leftDrawableRes = leftDrawableRes
+            leftDrawable?.setImageResource(leftDrawableRes)
+        }
+
+        fun setDuration(duration: Int) = apply {
+            this.duration = duration
+        }
+
+        fun setLeftDrawableTint(colorRes: Int) = apply {
+            this.leftDrawable?.setColorFilter(ContextCompat.getColor(context, colorRes))
+        }
 
-            val leftDrawable = rootView.findViewById<ImageView>(R.id.left_drawable_image_view)
-            drawableRes?.let {
-                leftDrawable.setImageResource(it)
+        fun make(): Toaster {
+            return Toaster(context, message, duration).also {
+                it.rootView = rootView
+                it.leftDrawableRes = leftDrawableRes
             }
+        }
+    }
 
-            toast.duration = duration
-            toast.view = rootView
-            return toast
+    private interface Colors{
+        companion object{
+            internal val ERROR = R.color.red
         }
+    }
 }

toaster/src/main/res/drawable/ic_baseline_error_24.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorControlNormal">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM13,17h-2v-2h2v2zM13,13h-2L11,7h2v6z"/>
+</vector>

toaster/src/main/res/values/colors.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="red">#B00020</color>
+</resources>