From c82e12bb47ae0b1132fd05d41629da4d3a0d6f5e Mon Sep 17 00:00:00 2001
From: Johan von Forstner <johan.forstner@gmail.com>
Date: Fri, 15 May 2020 18:56:20 +0200
Subject: [PATCH] multiple choice filter: add "all" and "none" buttons

---
 .../evmap/adapter/DataBindingAdapters.kt      | 12 +++++++++++
 .../layout/item_filter_multiple_choice.xml    | 21 ++++++++++++++++++-
 app/src/main/res/values-de/strings.xml        |  2 ++
 app/src/main/res/values/strings.xml           |  2 ++
 4 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/net/vonforst/evmap/adapter/DataBindingAdapters.kt b/app/src/main/java/net/vonforst/evmap/adapter/DataBindingAdapters.kt
index 407cd4e6..6a0b334f 100644
--- a/app/src/main/java/net/vonforst/evmap/adapter/DataBindingAdapters.kt
+++ b/app/src/main/java/net/vonforst/evmap/adapter/DataBindingAdapters.kt
@@ -184,6 +184,7 @@ class FiltersAdapter : DataBindingAdapter<FilterWithValue<FilterValue>>() {
             if (it !in filter.choices.keys) value.values.remove(it)
         }
 
+        val chips = mutableMapOf<String, Chip>()
         binding.chipGroup.removeAllViews()
         filter.choices.entries.sortedByDescending {
             it.key in value.values
@@ -208,8 +209,19 @@ class FiltersAdapter : DataBindingAdapter<FilterWithValue<FilterValue>>() {
             }
 
             binding.chipGroup.addView(chip)
+            chips.put(choice.key, chip)
         }
 
+        binding.btnAll.setOnClickListener {
+            value.all = true
+            value.values.addAll(filter.choices.keys)
+            chips.values.forEach { it.isChecked = true }
+        }
+        binding.btnNone.setOnClickListener {
+            value.all = true
+            value.values.addAll(filter.choices.keys)
+            chips.values.forEach { it.isChecked = false }
+        }
     }
 
     private fun setupSlider(
diff --git a/app/src/main/res/layout/item_filter_multiple_choice.xml b/app/src/main/res/layout/item_filter_multiple_choice.xml
index acec11d1..967eb054 100644
--- a/app/src/main/res/layout/item_filter_multiple_choice.xml
+++ b/app/src/main/res/layout/item_filter_multiple_choice.xml
@@ -45,7 +45,26 @@
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintHorizontal_bias="0.0"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/textView17" />
+            app:layout_constraintTop_toBottomOf="@+id/btnAll" />
+
+        <Button
+            android:id="@+id/btnAll"
+            style="@style/Widget.MaterialComponents.Button.TextButton.Dialog"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/all"
+            app:layout_constraintBaseline_toBaselineOf="@+id/textView17"
+            app:layout_constraintEnd_toStartOf="@+id/btnNone" />
+
+        <Button
+            android:id="@+id/btnNone"
+            style="@style/Widget.MaterialComponents.Button.TextButton.Dialog.Flush"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="16dp"
+            android:text="@string/none"
+            app:layout_constraintBaseline_toBaselineOf="@+id/textView17"
+            app:layout_constraintEnd_toEndOf="parent" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>
 </layout>
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 57cba7be..f85144ea 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -58,4 +58,6 @@
     <string name="plug_supercharger">Tesla Supercharger</string>
     <string name="plug_cee_blau">CEE Blau</string>
     <string name="plug_cee_rot">CEE Rot</string>
+    <string name="all">alle</string>
+    <string name="none">keine</string>
 </resources>
\ 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 6f526fee..37665d82 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -57,4 +57,6 @@
     <string name="plug_supercharger">Tesla Supercharger</string>
     <string name="plug_cee_blau">CEE Blue</string>
     <string name="plug_cee_rot">CEE Red</string>
+    <string name="all">all</string>
+    <string name="none">none</string>
 </resources>