新增數值輸入UI元件

app/src/main/java/com/ray650128/floatingwindow/view/ValueEditor.kt

@@ -0,0 +1,114 @@
+package com.ray650128.floatingwindow.view
+
+import android.content.Context
+import android.graphics.Color
+import android.text.InputType
+import android.util.AttributeSet
+import android.widget.Button
+import android.widget.EditText
+import android.widget.ImageButton
+import android.widget.LinearLayout
+import androidx.appcompat.app.AlertDialog
+import com.ray650128.floatingwindow.R
+import com.ray650128.floatingwindow.dp
+import com.ray650128.floatingwindow.px
+
+class ValueEditor: LinearLayout {
+
+    constructor(context: Context): super(context) {
+        this.context = context
+        initContentView()
+    }
+
+    constructor(context: Context, attrs: AttributeSet): super(context, attrs) {
+        this.context = context
+        initContentView()
+    }
+
+    constructor(context: Context, attrs: AttributeSet, intRes: Int): super(context, attrs, intRes) {
+        this.context = context
+        initContentView()
+    }
+
+    private lateinit var context: Context
+
+    private var onValueChangeListener: OnValueChangeListener? = null
+
+    private val btnAdd by lazy {
+        ImageButton(context).apply {
+            setImageResource(R.drawable.ic_value_add)
+            setBackgroundColor(Color.TRANSPARENT)
+            layoutParams = LayoutParams(48.dp, 48.dp)
+        }
+    }
+
+    private val btnValue by lazy {
+        Button(context).apply {
+            text = "$value"
+            setBackgroundColor(Color.TRANSPARENT)
+            layoutParams = LayoutParams(0, 48.dp).apply {
+                weight = 1.0f
+            }
+        }
+    }
+
+    private val btnMinus by lazy {
+        ImageButton(context).apply {
+            setImageResource(R.drawable.ic_value_minus)
+            setBackgroundColor(Color.TRANSPARENT)
+            layoutParams = LayoutParams(48.dp, 48.dp)
+        }
+    }
+
+    var value: Int = 0
+        set(value) {
+            field = value
+            btnValue.text = "$value"
+        }
+
+    private fun initContentView() {
+        this.orientation = HORIZONTAL
+
+        this.addView(btnAdd)
+        this.addView(btnValue)
+        this.addView(btnMinus)
+
+        btnAdd.setOnClickListener {
+            onValueChangeListener?.onValueAdd()
+        }
+
+        btnValue.setOnClickListener {
+            AlertDialog.Builder(context).apply {
+                val editText = EditText(context).apply {
+                    inputType = InputType.TYPE_CLASS_NUMBER
+                }
+                setTitle("請輸入想要的值")
+                setView(editText)
+                setPositiveButton("確定") { dialog, _ ->
+                    val inputText = editText.text?.toString()?.toIntOrNull()
+                    onValueChangeListener?.onValueClick(inputText)
+                    dialog.dismiss()
+                }
+                setNegativeButton("取消") { dialog, _ ->
+                    dialog.dismiss()
+                }
+            }.show()
+        }
+
+        btnMinus.setOnClickListener {
+            onValueChangeListener?.onValueMinus()
+        }
+    }
+
+    fun setOnValueChangeListener(listener: OnValueChangeListener) {
+        this.onValueChangeListener = listener
+    }
+
+    interface OnValueChangeListener {
+        fun onValueAdd()
+
+        fun onValueMinus()
+
+        fun onValueClick(value: Int?)
+    }
+}