Convert to kt

Signed-off-by: alperozturk <alper_ozturk@proton.me>

app/src/main/java/com/nextcloud/client/onboarding/WhatsNewActivity.kt

@@ -21,139 +21,146 @@
  * You should have received a copy of the GNU Affero General Public
  * License along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-package com.nextcloud.client.onboarding;
-
-import android.os.Bundle;
-import android.view.View;
-import android.widget.Button;
-import android.widget.ImageButton;
-import android.widget.TextView;
-
-import com.google.android.material.button.MaterialButton;
-import com.nextcloud.android.common.ui.theme.utils.ColorRole;
-import com.nextcloud.client.appinfo.AppInfo;
-import com.nextcloud.client.di.Injectable;
-import com.nextcloud.client.preferences.AppPreferences;
-import com.owncloud.android.BuildConfig;
-import com.owncloud.android.R;
-import com.owncloud.android.databinding.WhatsNewActivityBinding;
-import com.owncloud.android.ui.adapter.FeaturesViewAdapter;
-import com.owncloud.android.ui.adapter.FeaturesWebViewAdapter;
-import com.owncloud.android.ui.whatsnew.ProgressIndicator;
-import com.owncloud.android.utils.theme.ViewThemeUtils;
-
-import javax.inject.Inject;
-
-import androidx.fragment.app.FragmentActivity;
-import androidx.viewpager.widget.ViewPager;
+package com.nextcloud.client.onboarding
+
+import android.os.Bundle
+import android.view.View
+import androidx.activity.OnBackPressedCallback
+import androidx.fragment.app.FragmentActivity
+import androidx.viewpager.widget.ViewPager
+import com.nextcloud.android.common.ui.theme.utils.ColorRole
+import com.nextcloud.client.appinfo.AppInfo
+import com.nextcloud.client.di.Injectable
+import com.nextcloud.client.preferences.AppPreferences
+import com.owncloud.android.BuildConfig
+import com.owncloud.android.R
+import com.owncloud.android.databinding.WhatsNewActivityBinding
+import com.owncloud.android.ui.adapter.FeaturesViewAdapter
+import com.owncloud.android.ui.adapter.FeaturesWebViewAdapter
+import com.owncloud.android.utils.theme.ViewThemeUtils
+import javax.inject.Inject
 
 /**
  * Activity displaying new features after an update.
  */
-public class WhatsNewActivity extends FragmentActivity implements ViewPager.OnPageChangeListener, Injectable {
-
-    @Inject AppPreferences preferences;
-    @Inject AppInfo appInfo;
-    @Inject OnboardingService onboarding;
-    @Inject ViewThemeUtils.Factory viewThemeUtilsFactory;
-    private ViewThemeUtils viewThemeUtils;
-    
-    private WhatsNewActivityBinding binding;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        binding = WhatsNewActivityBinding.inflate(getLayoutInflater());
-        setContentView(binding.getRoot());
-
-        viewThemeUtils = viewThemeUtilsFactory.withPrimaryAsBackground();
-        viewThemeUtils.platform.themeStatusBar(this, ColorRole.PRIMARY);
-
-        
-        String[] urls = getResources().getStringArray(R.array.whatsnew_urls);
-
-        boolean showWebView = urls.length > 0;
-
-        if (showWebView) {
-            FeaturesWebViewAdapter featuresWebViewAdapter = new FeaturesWebViewAdapter(getSupportFragmentManager(),
-                                                                                       urls);
-            binding.progressIndicator.setNumberOfSteps(featuresWebViewAdapter.getCount());
-            binding.contentPanel.setAdapter(featuresWebViewAdapter);
-        } else {
-            FeaturesViewAdapter featuresViewAdapter = new FeaturesViewAdapter(getSupportFragmentManager(),
-                                                                              onboarding.getWhatsNew());
-            binding.progressIndicator.setNumberOfSteps(featuresViewAdapter.getCount());
-            binding.contentPanel.setAdapter(featuresViewAdapter);
-        }
+class WhatsNewActivity : FragmentActivity(), ViewPager.OnPageChangeListener, Injectable {
 
-        binding.contentPanel.addOnPageChangeListener(this);
+    @JvmField
+    @Inject
+    var preferences: AppPreferences? = null
 
-        viewThemeUtils.platform.colorImageView(binding.forward, ColorRole.ON_PRIMARY);
+    @JvmField
+    @Inject
+    var appInfo: AppInfo? = null
 
-        binding.forward.setOnClickListener(view -> {
-            if (binding.progressIndicator.hasNextStep()) {
-                binding.contentPanel.setCurrentItem(binding.contentPanel.getCurrentItem() + 1, true);
-                binding.progressIndicator.animateToStep(binding.contentPanel.getCurrentItem() + 1);
-            } else {
-                onFinish();
-                finish();
-            }
-            updateNextButtonIfNeeded();
-        });
+    @JvmField
+    @Inject
+    var onboarding: OnboardingService? = null
+
+    @JvmField
+    @Inject
+    var viewThemeUtilsFactory: ViewThemeUtils.Factory? = null
 
-        binding.forward.setBackground(null);
+    private var viewThemeUtils: ViewThemeUtils? = null
 
-        viewThemeUtils.platform.colorTextView(binding.skip, ColorRole.ON_PRIMARY);
-        binding.skip.setOnClickListener(view -> {
-            onFinish();
-            finish();
-        });
+    private lateinit var binding: WhatsNewActivityBinding
 
-        viewThemeUtils.platform.colorTextView(binding.welcomeText, ColorRole.ON_PRIMARY);
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
 
-        if (showWebView) {
-            binding.welcomeText.setText(R.string.app_name);
+        binding = WhatsNewActivityBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        viewThemeUtils = viewThemeUtilsFactory?.withPrimaryAsBackground()
+        viewThemeUtils?.platform?.themeStatusBar(this, ColorRole.PRIMARY)
+
+        val urls = resources.getStringArray(R.array.whatsnew_urls)
+        val showWebView = urls.isNotEmpty()
+
+        setupFeatureViewAdapter(showWebView, urls)
+        binding.contentPanel.addOnPageChangeListener(this)
+        setupForwardImageButton()
+        setupSkipImageButton()
+        setupWelcomeText(showWebView)
+        updateNextButtonIfNeeded()
+        handleOnBackPressed()
+    }
+
+    private fun setupFeatureViewAdapter(showWebView: Boolean, urls: Array<String>) {
+        val adapter = if (showWebView) {
+            FeaturesWebViewAdapter(supportFragmentManager, *urls)
         } else {
-            binding.welcomeText.setText(String.format(getString(R.string.whats_new_title), appInfo.getVersionName()));
+            onboarding?.let {
+                FeaturesViewAdapter(supportFragmentManager, *it.whatsNew)
+            }
         }
 
-        updateNextButtonIfNeeded();
+        adapter?.let {
+            binding.progressIndicator.setNumberOfSteps(it.count)
+            binding.contentPanel.adapter = it
+        }
+    }
+
+    private fun setupForwardImageButton() {
+        viewThemeUtils?.platform?.colorImageView(binding.forward, ColorRole.ON_PRIMARY)
+        binding.forward.setOnClickListener {
+            if (binding.progressIndicator.hasNextStep()) {
+                binding.contentPanel.setCurrentItem(binding.contentPanel.currentItem + 1, true)
+                binding.progressIndicator.animateToStep(binding.contentPanel.currentItem + 1)
+            } else {
+                onFinish()
+                finish()
+            }
+            updateNextButtonIfNeeded()
+        }
+        binding.forward.background = null
     }
 
-    @Override
-    public void onBackPressed() {
-        onFinish();
-        super.onBackPressed();
+    private fun setupSkipImageButton() {
+        viewThemeUtils?.platform?.colorTextView(binding.skip, ColorRole.ON_PRIMARY)
+        binding.skip.setOnClickListener {
+            onFinish()
+            finish()
+        }
     }
 
-    private void updateNextButtonIfNeeded() {
-        if (!binding.progressIndicator.hasNextStep()) {
-            binding.forward.setImageResource(R.drawable.ic_ok);
-            binding.skip.setVisibility(View.INVISIBLE);
+    private fun setupWelcomeText(showWebView: Boolean) {
+        viewThemeUtils?.platform?.colorTextView(binding.welcomeText, ColorRole.ON_PRIMARY)
+        binding.welcomeText.text = if (showWebView) {
+            getString(R.string.app_name)
         } else {
-            binding.forward.setImageResource(R.drawable.arrow_right);
-            binding.skip.setVisibility(View.VISIBLE);
+            String.format(getString(R.string.whats_new_title), appInfo?.versionName)
         }
     }
 
-    private void onFinish() {
-        preferences.setLastSeenVersionCode(BuildConfig.VERSION_CODE);
+    private fun handleOnBackPressed() {
+        onBackPressedDispatcher.addCallback(
+            this,
+            object : OnBackPressedCallback(true) {
+                override fun handleOnBackPressed() {
+                    onFinish()
+                    onBackPressedDispatcher.onBackPressed()
+                }
+            }
+        )
     }
 
-    @Override
-    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
-        // unused but to be implemented due to abstract parent
+    private fun updateNextButtonIfNeeded() {
+        val hasNextStep = binding.progressIndicator.hasNextStep()
+        binding.forward.setImageResource(if (hasNextStep) R.drawable.arrow_right else R.drawable.ic_ok)
+        binding.skip.visibility = if (hasNextStep) View.VISIBLE else View.INVISIBLE
     }
 
-    @Override
-    public void onPageSelected(int position) {
-        binding.progressIndicator.animateToStep(position + 1);
-        updateNextButtonIfNeeded();
+    private fun onFinish() {
+        preferences?.lastSeenVersionCode = BuildConfig.VERSION_CODE
     }
 
-    @Override
-    public void onPageScrollStateChanged(int state) {
-        // unused but to be implemented due to abstract parent
+    override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {}
+
+    override fun onPageSelected(position: Int) {
+        binding.progressIndicator.animateToStep(position + 1)
+        updateNextButtonIfNeeded()
     }
-}
 
+    override fun onPageScrollStateChanged(state: Int) {}
+}