Can create habit groups now

uhabits-android/src/main/AndroidManifest.xml

@@ -42,6 +42,14 @@
                 android:value=".activities.habits.list.ListHabitsActivity" />
         </activity>
 
+        <activity
+            android:name=".activities.habits.edit.EditHabitGroupActivity"
+            android:exported="true">
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value=".activities.habits.list.ListHabitsActivity" />
+        </activity>
+
         <meta-data
             android:name="com.google.android.backup.api_key"
             android:value="AEdPqrEAAAAI6aeWncbnMNo8E5GWeZ44dlc5cQ7tCROwFhOtiw" />

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/HabitCardListAdapter.kt

@@ -38,7 +38,7 @@ import javax.inject.Inject
  * Provides data that backs a [HabitCardListView].
  *
  *
- * The data if fetched and cached by a [HabitCardListCache]. This adapter
+ * The data is fetched and cached by a [HabitCardListCache]. This adapter
  * also holds a list of items that have been selected.
  */
 @ActivityScope

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/HabitGroupCardView.kt

@@ -0,0 +1,160 @@
+package org.isoron.uhabits.activities.habits.list.views
+
+import android.content.Context
+import android.graphics.text.LineBreaker.BREAK_STRATEGY_BALANCED
+import android.os.Build
+import android.os.Build.VERSION.SDK_INT
+import android.os.Handler
+import android.os.Looper
+import android.text.TextUtils
+import android.view.Gravity
+import android.view.ViewGroup.LayoutParams.MATCH_PARENT
+import android.view.ViewGroup.LayoutParams.WRAP_CONTENT
+import android.widget.FrameLayout
+import android.widget.LinearLayout
+import android.widget.TextView
+import org.isoron.platform.gui.toInt
+import org.isoron.uhabits.R
+import org.isoron.uhabits.activities.common.views.RingView
+import org.isoron.uhabits.core.models.HabitGroup
+import org.isoron.uhabits.core.models.ModelObservable
+import org.isoron.uhabits.core.ui.screens.habits.list.ListHabitsBehavior
+import org.isoron.uhabits.inject.ActivityContext
+import org.isoron.uhabits.utils.currentTheme
+import org.isoron.uhabits.utils.dp
+import org.isoron.uhabits.utils.sres
+import javax.inject.Inject
+
+class HabitGroupCardViewFactory
+@Inject constructor(
+    @ActivityContext val context: Context,
+    private val behavior: ListHabitsBehavior
+) {
+    fun create() = HabitGroupCardView(context, behavior)
+}
+
+class HabitGroupCardView(
+    @ActivityContext context: Context,
+    private val behavior: ListHabitsBehavior
+) : FrameLayout(context),
+    ModelObservable.Listener {
+
+    var habitGroup: HabitGroup? = null
+        set(newHabitGroup) {
+            if (isAttachedToWindow) {
+                field?.observable?.removeListener(this)
+                newHabitGroup?.observable?.addListener(this)
+            }
+            field = newHabitGroup
+            if (newHabitGroup != null) copyAttributesFrom(newHabitGroup)
+        }
+
+    var score
+        get() = scoreRing.getPercentage().toDouble()
+        set(value) {
+            scoreRing.setPercentage(value.toFloat())
+            scoreRing.setPrecision(1.0f / 16)
+        }
+
+    private var innerFrame: LinearLayout
+    private var label: TextView
+    private var scoreRing: RingView
+
+    private var currentToggleTaskId = 0
+
+    init {
+        scoreRing = RingView(context).apply {
+            val thickness = dp(3f)
+            val margin = dp(8f).toInt()
+            val ringSize = dp(15f).toInt()
+            layoutParams = LinearLayout.LayoutParams(ringSize, ringSize).apply {
+                setMargins(margin, 0, margin, 0)
+                gravity = Gravity.CENTER
+            }
+            setThickness(thickness)
+        }
+
+        label = TextView(context).apply {
+            maxLines = 2
+            ellipsize = TextUtils.TruncateAt.END
+            layoutParams = LinearLayout.LayoutParams(0, WRAP_CONTENT, 1f)
+            if (SDK_INT >= Build.VERSION_CODES.Q) {
+                breakStrategy = BREAK_STRATEGY_BALANCED
+            }
+        }
+
+        innerFrame = LinearLayout(context).apply {
+            gravity = Gravity.CENTER_VERTICAL
+            orientation = LinearLayout.HORIZONTAL
+            layoutParams = LinearLayout.LayoutParams(MATCH_PARENT, WRAP_CONTENT)
+            elevation = dp(1f)
+
+            addView(scoreRing)
+            addView(label)
+
+            setOnTouchListener { v, event ->
+                v.background.setHotspot(event.x, event.y)
+                false
+            }
+        }
+
+        clipToPadding = false
+        layoutParams = LayoutParams(MATCH_PARENT, WRAP_CONTENT)
+        val margin = dp(3f).toInt()
+        setPadding(margin, 0, margin, margin)
+        addView(innerFrame)
+    }
+
+    override fun onModelChange() {
+        Handler(Looper.getMainLooper()).post {
+            habitGroup?.let { copyAttributesFrom(it) }
+        }
+    }
+
+    override fun setSelected(isSelected: Boolean) {
+        super.setSelected(isSelected)
+        updateBackground(isSelected)
+    }
+
+    override fun onAttachedToWindow() {
+        super.onAttachedToWindow()
+        habitGroup?.observable?.addListener(this)
+    }
+
+    override fun onDetachedFromWindow() {
+        habitGroup?.observable?.removeListener(this)
+        super.onDetachedFromWindow()
+    }
+
+    private fun copyAttributesFrom(hgr: HabitGroup) {
+        fun getActiveColor(hgr: HabitGroup): Int {
+            return when (hgr.isArchived) {
+                true -> sres.getColor(R.attr.contrast60)
+                false -> currentTheme().color(hgr.color).toInt()
+            }
+        }
+
+        val c = getActiveColor(hgr)
+        label.apply {
+            text = hgr.name
+            setTextColor(c)
+        }
+        scoreRing.apply {
+            setColor(c)
+        }
+    }
+
+    private fun updateBackground(isSelected: Boolean) {
+        val background = when (isSelected) {
+            true -> R.drawable.selected_box
+            false -> R.drawable.ripple
+        }
+        innerFrame.setBackgroundResource(background)
+    }
+
+    companion object {
+        fun (() -> Unit).delay(delayInMillis: Long) {
+            Handler(Looper.getMainLooper()).postDelayed(this, delayInMillis)
+        }
+    }
+}

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/HabitGroupCardViewHolder.kt

@@ -0,0 +1,5 @@
+package org.isoron.uhabits.activities.habits.list.views
+
+import androidx.recyclerview.widget.RecyclerView
+
+class HabitGroupCardViewHolder(itemView: HabitGroupCardView) : RecyclerView.ViewHolder(itemView)