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Assets/UniWebView/Editor/UniWebViewEditorSettings.cs

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+using UnityEngine;
+using UnityEditor;
+using System.Collections.Generic;
+using System;
+using System.IO;
+
+class UniWebViewEditorSettings: ScriptableObject
+{
+    const string assetPath = "Assets/Editor/UniWebView/settings.asset";
+
+    [SerializeField]
+    internal bool usesCleartextTraffic = false;
+
+    [SerializeField]
+    internal bool writeExternalStorage = false;
+
+    [SerializeField]
+    internal bool accessFineLocation = false;
+
+    [SerializeField]
+    internal bool addsKotlin = true;
+
+    [SerializeField]
+    internal bool addsAndroidBrowser = true;
+
+    [SerializeField]
+    internal bool enableJetifier = true;
+
+    internal static UniWebViewEditorSettings GetOrCreateSettings() {
+        var settings = AssetDatabase.LoadAssetAtPath<UniWebViewEditorSettings>(assetPath);
+
+        if (settings == null) {
+            settings = ScriptableObject.CreateInstance<UniWebViewEditorSettings>();
+
+            Directory.CreateDirectory("Assets/Editor/UniWebView/");
+            AssetDatabase.CreateAsset(settings, assetPath);
+            AssetDatabase.SaveAssets();
+        }
+
+        return settings;
+    }
+
+    internal static SerializedObject GetSerializedSettings() {
+        return new SerializedObject(GetOrCreateSettings());
+    }
+}
+
+static class UniWebViewSettingsProvider {
+    static SerializedObject settings;
+
+    #if UNITY_2018_3_OR_NEWER
+    private class Provider : SettingsProvider {
+        public Provider(string path, SettingsScope scope = SettingsScope.User): base(path, scope) {}
+        public override void OnGUI(string searchContext) {
+            DrawPref();
+        }
+    }
+    [SettingsProvider]
+    static SettingsProvider UniWebViewPref() {
+        return new Provider("Preferences/UniWebView");
+    }
+    #else
+    [PreferenceItem("UniWebView")]
+    #endif
+    static void DrawPref() {
+        EditorGUIUtility.labelWidth = 320;
+        if (settings == null) {
+            settings = UniWebViewEditorSettings.GetSerializedSettings();
+        }
+        settings.Update();
+        EditorGUI.BeginChangeCheck();
+
+        EditorGUILayout.BeginVertical();
+        EditorGUILayout.LabelField("Android Manifest", EditorStyles.boldLabel);
+
+        EditorGUI.indentLevel++;
+        EditorGUILayout.PropertyField(settings.FindProperty("usesCleartextTraffic"));
+        DrawDetailLabel("If you need to load plain HTTP content.");
+        
+        EditorGUILayout.PropertyField(settings.FindProperty("writeExternalStorage"));
+        DrawDetailLabel("If you need to download an image from web page.");
+
+        EditorGUILayout.PropertyField(settings.FindProperty("accessFineLocation"));
+        DrawDetailLabel("If you need to enable location support in web view.");
+        EditorGUI.indentLevel--;
+        EditorGUILayout.EndVertical();
+
+        EditorGUILayout.BeginVertical();
+        EditorGUILayout.LabelField("Gradle Build", EditorStyles.boldLabel);
+
+        EditorGUI.indentLevel++;
+
+        EditorGUILayout.PropertyField(settings.FindProperty("addsKotlin"));
+        DrawDetailLabel("Turn off this if another library is already adding Kotlin runtime.");
+        EditorGUILayout.PropertyField(settings.FindProperty("addsAndroidBrowser"));
+        DrawDetailLabel("Turn off this if another library is already adding 'androidx.browser:browser'.");
+        EditorGUILayout.PropertyField(settings.FindProperty("enableJetifier"));
+        DrawDetailLabel("Turn off this if you do not need Jetifier (for converting other legacy support dependencies to Android X).");
+
+        EditorGUILayout.EndVertical();
+        
+        if (EditorGUI.EndChangeCheck()) {
+            settings.ApplyModifiedProperties();
+            AssetDatabase.SaveAssets();
+        }
+        EditorGUIUtility.labelWidth = 0;
+    }
+
+    static void DrawDetailLabel(string text) {
+        EditorGUI.indentLevel++;
+        EditorGUILayout.LabelField(text, EditorStyles.miniLabel);
+        EditorGUI.indentLevel--;
+    }
+}