#597 Start UI work

Signed-off-by: Stefan Niedermann <info@niedermann.it>

13 files changed, 444 insertions, 0 deletions

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index f936fac67..847f5c0c6 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -136,6 +136,25 @@
             android:name=".ui.exception.ExceptionActivity"
             android:process=":error_activity" />
 
+        <activity android:name=".ui.widget.filter.FilterWidgetConfigurationActivity">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
+            </intent-filter>
+        </activity>
+
+        <receiver
+            android:name="it.niedermann.nextcloud.deck.ui.widget.filter.FilterWidget"
+            android:label="@string/widget_filter_title">
+
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/filter_widget_provider" />
+        </receiver>
+
         <activity android:name=".ui.widget.stack.StackWidgetConfigurationActivity">
             <intent-filter>
                 <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/model/widget/filter/FilterWidgetConfiguration.java b/app/src/main/java/it/niedermann/nextcloud/deck/model/widget/filter/FilterWidgetConfiguration.java
new file mode 100644
index 000000000..0404c530c
--- /dev/null
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/model/widget/filter/FilterWidgetConfiguration.java
@@ -0,0 +1,8 @@
+package it.niedermann.nextcloud.deck.model.widget.filter;
+
+/**
+ * Contains all configurations related to a single {@link FilterWidget} instance.
+ */
+public class FilterWidgetConfiguration {
+    // TODO implement
+}
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/model/widget/filter/FilterWidgetData.java b/app/src/main/java/it/niedermann/nextcloud/deck/model/widget/filter/FilterWidgetData.java
new file mode 100644
index 000000000..b419ee8b3
--- /dev/null
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/model/widget/filter/FilterWidgetData.java
@@ -0,0 +1,18 @@
+package it.niedermann.nextcloud.deck.model.widget.filter;
+
+import java.util.Collections;
+import java.util.List;
+
+import it.niedermann.nextcloud.deck.model.full.FullCard;
+
+/**
+ * Contains the payload data of a single {@link FilterWidget} instance
+ */
+// TODO implement
+public class FilterWidgetData {
+
+    // TODO maybe some kind of helping structure to get transport the sorting information
+    public List<FullCard> getCards() {
+        return Collections.emptyList();
+    }
+}
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/persistence/sync/SyncManager.java b/app/src/main/java/it/niedermann/nextcloud/deck/persistence/sync/SyncManager.java
index 4d1829193..c12a347ef 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/persistence/sync/SyncManager.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/persistence/sync/SyncManager.java
@@ -61,6 +61,8 @@ import it.niedermann.nextcloud.deck.model.ocs.comment.DeckComment;
 import it.niedermann.nextcloud.deck.model.ocs.comment.OcsComment;
 import it.niedermann.nextcloud.deck.model.ocs.comment.full.FullDeckComment;
 import it.niedermann.nextcloud.deck.model.ocs.projects.OcsProjectResource;
+import it.niedermann.nextcloud.deck.model.widget.filter.FilterWidgetConfiguration;
+import it.niedermann.nextcloud.deck.model.widget.filter.FilterWidgetData;
 import it.niedermann.nextcloud.deck.persistence.sync.adapters.ServerAdapter;
 import it.niedermann.nextcloud.deck.persistence.sync.adapters.db.DataBaseAdapter;
 import it.niedermann.nextcloud.deck.persistence.sync.adapters.db.util.LiveDataHelper;
@@ -1967,6 +1969,26 @@ public class SyncManager {
     }
 
     /**
+     * If a filter widget with the given id exists, it will be updated, otherwise it will be created.
+     */
+    public void updateFilterWidgetConfiguration(@NonNull FilterWidgetConfiguration data) {
+        // TODO
+        throw new UnsupportedOperationException("Not yet implemented");
+    }
+
+    public void deleteFilterWidget(int appWidgetId) {
+        doAsync(() -> dataBaseAdapter.deleteFilterWidget(appWidgetId));
+    }
+
+    /**
+     * Returns the payload of the give {@param appWidgetId}.
+     */
+    public LiveData<FilterWidgetData> getFilterWidgetData(int appWidgetId) {
+        // TODO
+        throw new UnsupportedOperationException("Not yet implemented");
+    }
+
+    /**
      * FIXME https://github.com/stefan-niedermann/nextcloud-deck/issues/640
      */
     public static boolean ignoreExceptionOnVoidError(Throwable t) {
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/persistence/sync/adapters/db/DataBaseAdapter.java b/app/src/main/java/it/niedermann/nextcloud/deck/persistence/sync/adapters/db/DataBaseAdapter.java
index 982844f06..e02ce7aab 100644
--- a/app/src/main/java/it/niedermann/nextcloud/deck/persistence/sync/adapters/db/DataBaseAdapter.java
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/persistence/sync/adapters/db/DataBaseAdapter.java
@@ -1052,6 +1052,11 @@ public class DataBaseAdapter {
         return db.getStackWidgetModelDao().getStackWidgetByAppWidgetIdDirectly(appWidgetId);
     }
 
+    public void deleteFilterWidget(int appWidgetId) {
+        // TODO
+        throw new UnsupportedOperationException("Not yet implemented");
+    }
+
     public void deleteStackWidget(int appWidgetId) {
         StackWidgetModel model = new StackWidgetModel();
         model.setAppWidgetId(appWidgetId);
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidget.java b/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidget.java
new file mode 100644
index 000000000..263ac363e
--- /dev/null
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidget.java
@@ -0,0 +1,84 @@
+package it.niedermann.nextcloud.deck.ui.widget.filter;
+
+import android.appwidget.AppWidgetManager;
+import android.appwidget.AppWidgetProvider;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+
+import java.util.NoSuchElementException;
+
+import it.niedermann.nextcloud.deck.model.Account;
+import it.niedermann.nextcloud.deck.persistence.sync.SyncManager;
+
+import static android.appwidget.AppWidgetManager.ACTION_APPWIDGET_UPDATE;
+
+public class FilterWidget extends AppWidgetProvider {
+    public static final String ACCOUNT_KEY = "filter_widget_account";
+    public static final String BUNDLE_KEY = "filter_widget_bundle";
+
+    static void updateAppWidget(Context context, AppWidgetManager awm, int[] appWidgetIds, Account account) {
+        final SyncManager syncManager = new SyncManager(context);
+
+        for (int appWidgetId : appWidgetIds) {
+            new Thread(() -> {
+                try {
+                    // TODO implement
+                    throw new UnsupportedOperationException("Not yet implemented");
+                } catch (NoSuchElementException e) {
+                    // onUpdate has been triggered before the user finished configuring the widget
+                }
+            }).start();
+        }
+    }
+
+    @Override
+    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+        super.onUpdate(context, appWidgetManager, appWidgetIds);
+        updateAppWidget(context, appWidgetManager, appWidgetIds, null);
+    }
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        final Account account;
+
+        super.onReceive(context, intent);
+
+        AppWidgetManager awm = AppWidgetManager.getInstance(context);
+
+        if (intent.getAction() != null) {
+            if (intent.getAction().equals(ACTION_APPWIDGET_UPDATE)) {
+                if (intent.hasExtra(BUNDLE_KEY)) {
+                    Bundle extras = intent.getBundleExtra(FilterWidget.BUNDLE_KEY);
+                    account = (Account) extras.getSerializable(ACCOUNT_KEY);
+
+                    if (intent.hasExtra(AppWidgetManager.EXTRA_APPWIDGET_ID)) {
+                        if (intent.getExtras() != null) {
+                            updateAppWidget(context, awm, new int[]{intent.getExtras().getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1)}, account);
+                        }
+                    } else {
+                        updateAppWidget(context, awm, awm.getAppWidgetIds(new ComponentName(context, FilterWidget.class)), account);
+                    }
+                }
+            }
+        }
+    }
+
+    @Override
+    public void onDeleted(Context context, int[] appWidgetIds) {
+        super.onDeleted(context, appWidgetIds);
+        final SyncManager syncManager = new SyncManager(context);
+
+        for (int appWidgetId : appWidgetIds) {
+            syncManager.deleteFilterWidget(appWidgetId);
+        }
+    }
+
+    /**
+     * Updates UI data of all {@link FilterWidget} instances
+     */
+    public static void notifyDatasetChanged(Context context) {
+        context.sendBroadcast(new Intent(context, FilterWidget.class).setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE));
+    }
+}
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidgetConfigurationActivity.java b/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidgetConfigurationActivity.java
new file mode 100644
index 000000000..ac466961d
--- /dev/null
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidgetConfigurationActivity.java
@@ -0,0 +1,66 @@
+package it.niedermann.nextcloud.deck.ui.widget.filter;
+
+import android.appwidget.AppWidgetManager;
+import android.content.Intent;
+import android.os.Bundle;
+
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.ViewModelProvider;
+
+import it.niedermann.nextcloud.deck.DeckLog;
+import it.niedermann.nextcloud.deck.R;
+import it.niedermann.nextcloud.deck.databinding.ActivityFilterWidgetBinding;
+import it.niedermann.nextcloud.deck.model.Account;
+import it.niedermann.nextcloud.deck.ui.widget.stack.StackWidget;
+
+public class FilterWidgetConfigurationActivity extends AppCompatActivity {
+    private int appWidgetId;
+    private ActivityFilterWidgetBinding binding;
+    private FilterWidgetViewModel viewModel;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        binding = ActivityFilterWidgetBinding.inflate(getLayoutInflater());
+        viewModel = new ViewModelProvider(this).get(FilterWidgetViewModel.class);
+
+        final ActionBar actionBar = getSupportActionBar();
+        if (actionBar != null) {
+            actionBar.setTitle(R.string.add_filter_widget);
+        }
+
+        setResult(RESULT_CANCELED);
+        final Bundle extras = getIntent().getExtras();
+
+        if (extras != null) {
+            appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID,
+                    AppWidgetManager.INVALID_APPWIDGET_ID);
+        }
+
+        if (appWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
+            DeckLog.error("INVALID_APPWIDGET_ID");
+            finish();
+        }
+    }
+
+    protected void onSubmit(Account account, long boardId, long stackId) {
+        final Bundle extras = new Bundle();
+
+        viewModel.updateFilterWidget();
+        Intent updateIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE, null,
+                getApplicationContext(), StackWidget.class);
+        extras.putSerializable(StackWidget.ACCOUNT_KEY, account);
+        extras.putInt(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
+
+        // The `extras` bundle is added to the intent this way because using putExtras(extras) 
+        // would have the OS attempt to reassemle the data and cause a crash 
+        // when it finds classes that are only known to this application.
+        updateIntent.putExtra(StackWidget.BUNDLE_KEY, extras);
+        setResult(RESULT_OK, updateIntent);
+        getApplicationContext().sendBroadcast(updateIntent);
+
+        finish();
+    }
+}
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidgetFactory.java b/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidgetFactory.java
new file mode 100644
index 000000000..cd2a6225b
--- /dev/null
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidgetFactory.java
@@ -0,0 +1,103 @@
+package it.niedermann.nextcloud.deck.ui.widget.filter;
+
+import android.appwidget.AppWidgetManager;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.widget.RemoteViews;
+import android.widget.RemoteViewsService;
+
+import androidx.lifecycle.LiveData;
+
+import it.niedermann.nextcloud.deck.DeckLog;
+import it.niedermann.nextcloud.deck.R;
+import it.niedermann.nextcloud.deck.model.full.FullCard;
+import it.niedermann.nextcloud.deck.model.widget.filter.FilterWidgetData;
+import it.niedermann.nextcloud.deck.persistence.sync.SyncManager;
+import it.niedermann.nextcloud.deck.ui.widget.stack.StackWidget;
+
+public class FilterWidgetFactory implements RemoteViewsService.RemoteViewsFactory {
+    private final Context context;
+    private final int appWidgetId;
+
+    private FilterWidgetData data;
+
+    FilterWidgetFactory(Context context, Intent intent) {
+        this.context = context;
+        appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
+    }
+
+    @Override
+    public void onCreate() {
+        final SyncManager syncManager = new SyncManager(context);
+
+        LiveData<FilterWidgetData> filterWidgetData$ = syncManager.getFilterWidgetData(appWidgetId);
+        filterWidgetData$.observeForever((data) -> {
+            if (data != null) {
+                RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_stack);
+                this.data = data;
+                notifyAppWidgetUpdate(views);
+            }
+        });
+    }
+
+    @Override
+    public void onDataSetChanged() {
+
+    }
+
+
+    @Override
+    public void onDestroy() {
+
+    }
+
+    @Override
+    public int getCount() {
+        return data == null ? 0 : data.getCards().size();
+    }
+
+    @Override
+    public RemoteViews getViewAt(int i) {
+        RemoteViews widget_entry;
+
+        if (data.getCards() == null || i > (data.getCards().size() - 1) || data.getCards().get(i) == null) {
+            DeckLog.error("Card not found at position " + i);
+            return null;
+        }
+
+        FullCard card = data.getCards().get(i);
+
+        widget_entry = new RemoteViews(context.getPackageName(), R.layout.widget_stack_entry);
+        widget_entry.setTextViewText(R.id.widget_entry_content_tv, card.card.getTitle());
+
+        return widget_entry;
+    }
+
+    @Override
+    public RemoteViews getLoadingView() {
+        return null;
+    }
+
+    @Override
+    public int getViewTypeCount() {
+        return 1;
+    }
+
+    @Override
+    public long getItemId(int i) {
+        return i;
+    }
+
+    @Override
+    public boolean hasStableIds() {
+        return true;
+    }
+
+    private void notifyAppWidgetUpdate(RemoteViews views) {
+        AppWidgetManager awm = AppWidgetManager.getInstance(context);
+        int[] appWidgetIds = awm.getAppWidgetIds(new ComponentName(context, StackWidget.class));
+        awm.notifyAppWidgetViewDataChanged(appWidgetIds, R.id.stack_widget_lv);
+        awm.updateAppWidget(appWidgetId, views);
+    }
+}
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidgetService.java b/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidgetService.java
new file mode 100644
index 000000000..20c4350ba
--- /dev/null
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidgetService.java
@@ -0,0 +1,11 @@
+package it.niedermann.nextcloud.deck.ui.widget.filter;
+
+import android.content.Intent;
+import android.widget.RemoteViewsService;
+
+public class FilterWidgetService extends RemoteViewsService {
+    @Override
+    public RemoteViewsFactory onGetViewFactory(Intent intent) {
+        return new FilterWidgetFactory(this.getApplicationContext(), intent);
+    }
+}
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidgetViewModel.java b/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidgetViewModel.java
new file mode 100644
index 000000000..14dc72aa9
--- /dev/null
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/ui/widget/filter/FilterWidgetViewModel.java
@@ -0,0 +1,33 @@
+package it.niedermann.nextcloud.deck.ui.widget.filter;
+
+import android.app.Application;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.AndroidViewModel;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+
+import it.niedermann.nextcloud.deck.model.widget.filter.FilterWidgetConfiguration;
+import it.niedermann.nextcloud.deck.persistence.sync.SyncManager;
+
+public class FilterWidgetViewModel extends AndroidViewModel {
+
+    @NonNull
+    private final SyncManager syncManager;
+    @NonNull
+    private final MutableLiveData<FilterWidgetConfiguration> filterWidgetConfiguration$ = new MutableLiveData<>(new FilterWidgetConfiguration());
+
+    public FilterWidgetViewModel(@NonNull Application application) {
+        super(application);
+        this.syncManager = new SyncManager(application);
+    }
+
+    public LiveData<FilterWidgetConfiguration> getFilterWidgetConfiguration() {
+        return this.filterWidgetConfiguration$;
+    }
+
+    public void updateFilterWidget() {
+        //noinspection ConstantConditions
+        syncManager.updateFilterWidgetConfiguration(filterWidgetConfiguration$.getValue());
+    }
+}
diff --git a/app/src/main/res/layout/activity_filter_widget.xml b/app/src/main/res/layout/activity_filter_widget.xml
new file mode 100644
index 000000000..a2d5f409b
--- /dev/null
+++ b/app/src/main/res/layout/activity_filter_widget.xml
@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:showIn="@layout/activity_pick_stack">
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:id="@+id/appBarLayout"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?android:actionBarSize"
+            app:title="@string/add_filter_widget" />
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_above="@+id/buttonBar"
+        android:layout_below="@id/appBarLayout"
+        android:padding="@dimen/spacer_2x">
+
+        <FrameLayout
+            android:id="@+id/fragment_container"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+    </ScrollView>
+
+    <LinearLayout
+        android:id="@+id/buttonBar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentBottom="true"
+        android:orientation="horizontal"
+        android:padding="@dimen/spacer_2x"
+        android:weightSum="1.0">
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/cancel"
+            style="@style/Widget.MaterialComponents.Button.TextButton"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="@dimen/spacer_1x"
+            android:layout_weight=".5"
+            android:text="@android:string/cancel"
+            android:textColor="@color/defaultBrand" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/submit"
+            style="@style/Widget.MaterialComponents.Button"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="@dimen/spacer_1x"
+            android:layout_weight=".5"
+            android:text="@string/simple_add"
+            app:backgroundTint="@color/defaultBrand" />
+    </LinearLayout>
+</RelativeLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index d6d9470fe..1956f00d5 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -291,6 +291,7 @@
     <string name="card_does_not_yet_exist">Card does not yet exist in Deck</string>
 
     <string name="widget_stack_title">List</string>
+    <string name="widget_filter_title">Filter</string>
     <string name="widget_stack_header_icon">Widget header icon</string>
     <string name="widget_stack_placeholder_icon">Widget placeholder icon</string>
     <string name="select_stack">Select list</string>
@@ -327,4 +328,5 @@
     <string name="files">Files</string>
     <string name="gallery">Gallery</string>
     <string name="simple_attach">attach</string>
+    <string name="add_filter_widget">Add filter widget</string>
 </resources>
diff --git a/app/src/main/res/xml/filter_widget_provider.xml b/app/src/main/res/xml/filter_widget_provider.xml
new file mode 100644
index 000000000..329bb233f
--- /dev/null
+++ b/app/src/main/res/xml/filter_widget_provider.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:minHeight="110dp"
+    android:minWidth="180dp"
+    android:minResizeHeight="40dp"
+    android:minResizeWidth="80dp"
+    android:resizeMode="vertical|horizontal"
+    android:updatePeriodMillis="86400000"
+    android:widgetCategory="keyguard|home_screen"
+    android:configure="it.niedermann.nextcloud.deck.ui.widget.filter.FilterWidgetConfigurationActivity" />