Add option to open list when clicking empty space

app/src/main/java/org/tasks/preferences/fragments/ScrollableWidget.kt

@@ -70,6 +70,7 @@ class ScrollableWidget : InjectingPreferenceFragment() {
         val showDescription = setupCheckbox(R.string.p_widget_show_description, true)
         setupCheckbox(R.string.p_widget_show_full_description, false).dependency = showDescription.key
         setupList(R.string.p_widget_spacing)
+        setupList(R.string.p_widget_empty_space_click)
         val showHeader = setupCheckbox(R.string.p_widget_show_header)
         val showSettings = setupCheckbox(R.string.p_widget_show_settings)
         showSettings.dependency = showHeader.key

app/src/main/java/org/tasks/widget/TasksWidget.java

@@ -110,6 +110,11 @@ public class TasksWidget extends InjectingAppWidgetProvider {
     remoteViews.setOnClickPendingIntent(R.id.widget_change_list, getChooseListIntent(context, filter, id));
     remoteViews.setOnClickPendingIntent(
         R.id.widget_reconfigure, getWidgetConfigIntent(context, id));
+    if (widgetPreferences.openOnEmptySpaceClick()) {
+      remoteViews.setOnClickPendingIntent(R.id.empty_view, getOpenListIntent(context, filter, id));
+    } else {
+      remoteViews.setOnClickPendingIntent(R.id.empty_view, null);
+    }
     remoteViews.setPendingIntentTemplate(R.id.list_view, getPendingIntentTemplate(context));
     return remoteViews;
   }

app/src/main/java/org/tasks/widget/WidgetPreferences.java

@@ -98,6 +98,10 @@ public class WidgetPreferences {
     return getAlphaValue(R.string.p_widget_empty_space_opacity);
   }
 
+  boolean openOnEmptySpaceClick() {
+    return preferences.getIntegerFromString(getKey(R.string.p_widget_empty_space_click), 0) == 1;
+  }
+
   private int getAlphaValue(int resId) {
     return (int) ((preferences.getInt(getKey(resId), 100) / 100.0) * 255.0);
   }

app/src/main/res/values/keys.xml

@@ -122,6 +122,16 @@
     <item>2</item>
   </string-array>
 
+  <string-array name="widget_empty_click_titles">
+    <item>@string/widget_empty_space_do_nothing</item>
+    <item>@string/widget_empty_space_open_list</item>
+  </string-array>
+
+  <string-array name="widget_empty_click_values">
+    <item>0</item>
+    <item>1</item>
+  </string-array>
+
   <string-array name="EPr_default_urgency_values">
     <!-- urgency: labels that map EPr_default_urgency items to index in TEA_urgency. -->
     <item>0</item>
@@ -279,6 +289,7 @@
   <string name="p_widget_due_date_underneath">widget-due-date-underneath-</string>
   <string name="p_widget_header_opacity">widget-header-opacity-</string>
   <string name="p_widget_empty_space_opacity">widget-empty-space-opacity-</string>
+  <string name="p_widget_empty_space_click">widget-empty-space-click-</string>
   <string name="p_widget_spacing">widget-spacing-</string>
   <string name="p_dashclock_filter">dashclock_filter</string>
   <string name="p_default_remote_list">default_remote_list</string>

app/src/main/res/values/strings.xml

@@ -413,6 +413,9 @@ File %1$s contained %2$s.\n\n
   <string name="widget_header_settings">Header settings</string>
   <string name="widget_row_settings">Row settings</string>
   <string name="widget_empty_space">Empty space</string>
+  <string name="widget_empty_space_on_click">On click</string>
+  <string name="widget_empty_space_do_nothing">Do nothing</string>
+  <string name="widget_empty_space_open_list">Open list</string>
   <string name="clear_completed_tasks_confirmation">Clear completed tasks?</string>
   <string name="copy_multiple_tasks_confirmation">%s copied</string>
   <string name="delete_multiple_tasks_confirmation">%s deleted</string>

app/src/main/res/xml/preferences_widget.xml

@@ -107,6 +107,14 @@
       app:seekBarIncrement="5"
       app:showSeekBarValue="true" />
 
+    <ListPreference
+      android:defaultValue="0"
+      android:key="@string/p_widget_empty_space_click"
+      android:entryValues="@array/widget_empty_click_values"
+      android:entries="@array/widget_empty_click_titles"
+      android:title="@string/widget_empty_space_on_click"
+      android:summary="%s"/>
+
   </PreferenceCategory>
 
 </PreferenceScreen>