Slider Question functionality added

datacapture/src/androidTest/java/com/google/android/fhir/datacapture/views/QuestionnaireItemSliderViewHolderFactoryInstrumentedTest.kt

@@ -0,0 +1,172 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.android.fhir.datacapture.views
+
+import android.widget.FrameLayout
+import android.widget.TextView
+import androidx.appcompat.view.ContextThemeWrapper
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import com.google.android.fhir.datacapture.R
+import com.google.android.material.slider.Slider
+import com.google.common.truth.Truth.assertThat
+import com.google.fhir.r4.core.Integer
+import com.google.fhir.r4.core.Questionnaire
+import com.google.fhir.r4.core.QuestionnaireResponse
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+class QuestionnaireItemSliderViewHolderFactoryInstrumentedTest {
+  private lateinit var context: ContextThemeWrapper
+  private lateinit var parent: FrameLayout
+  private lateinit var viewHolder: QuestionnaireItemViewHolder
+
+  @Before
+  fun setUp() {
+    context =
+      ContextThemeWrapper(
+        InstrumentationRegistry.getInstrumentation().targetContext,
+        R.style.Theme_MaterialComponents
+      )
+    parent = FrameLayout(context)
+    viewHolder = QuestionnaireItemSliderViewHolderFactory.create(parent)
+  }
+
+  @Test
+  fun shouldSetHeaderTextViewText() {
+    viewHolder.bind(
+      QuestionnaireItemViewItem(
+        Questionnaire.Item.newBuilder()
+          .apply {
+            text = com.google.fhir.r4.core.String.newBuilder().setValue("Question?").build()
+          }
+          .build(),
+        QuestionnaireResponse.Item.newBuilder()
+      ) {}
+    )
+
+    assertThat(viewHolder.itemView.findViewById<TextView>(R.id.slider_header).text)
+      .isEqualTo("Question?")
+  }
+
+  @Test
+  fun singleAnswerOrNull_noAnswer_shouldReturnNull() {
+    val questionnaireItemViewItem =
+      QuestionnaireItemViewItem(
+        Questionnaire.Item.getDefaultInstance(),
+        QuestionnaireResponse.Item.newBuilder()
+      ) {}
+
+    assertThat(questionnaireItemViewItem.singleAnswerOrNull).isNull()
+  }
+
+  @Test
+  fun shouldSetSliderValue() {
+    viewHolder.bind(
+      QuestionnaireItemViewItem(
+        Questionnaire.Item.getDefaultInstance(),
+        QuestionnaireResponse.Item.newBuilder().apply {
+          addAnswer(
+            QuestionnaireResponse.Item.Answer.newBuilder().apply {
+              value =
+                QuestionnaireResponse.Item.Answer.ValueX.newBuilder()
+                  .setInteger(Integer.newBuilder().setValue(10).build())
+                  .build()
+            }
+          )
+        }
+      ) {}
+    )
+
+    assertThat(viewHolder.itemView.findViewById<Slider>(R.id.slider).value).isEqualTo(10)
+  }
+
+  @Test
+  fun shouldSetQuestionnaireResponseSliderAnswer() {
+    val questionnaireItemViewItem =
+      QuestionnaireItemViewItem(
+        Questionnaire.Item.getDefaultInstance(),
+        QuestionnaireResponse.Item.newBuilder()
+      ) {}
+
+    viewHolder.bind(questionnaireItemViewItem)
+    viewHolder.itemView.findViewById<Slider>(R.id.slider).value = 10.0F
+
+    val answer = questionnaireItemViewItem.questionnaireResponseItemBuilder.answerBuilderList
+    assertThat(answer.size).isEqualTo(1)
+    assertThat(answer[0].value.integer.value).isEqualTo(10)
+  }
+
+  @Test
+  fun shouldSetAnswerToNull() {
+    val questionnaireItemViewItem =
+      QuestionnaireItemViewItem(
+        Questionnaire.Item.getDefaultInstance(),
+        QuestionnaireResponse.Item.newBuilder().apply {
+          addAnswer(
+            QuestionnaireResponse.Item.Answer.newBuilder().apply {
+              value =
+                QuestionnaireResponse.Item.Answer.ValueX.newBuilder()
+                  .setInteger(Integer.newBuilder().setValue(10).build())
+                  .build()
+            }
+          )
+          addAnswer(
+            QuestionnaireResponse.Item.Answer.newBuilder().apply {
+              value =
+                QuestionnaireResponse.Item.Answer.ValueX.newBuilder()
+                  .setInteger(Integer.newBuilder().setValue(10).build())
+                  .build()
+            }
+          )
+        }
+      ) {}
+
+    assertThat(questionnaireItemViewItem.singleAnswerOrNull).isNull()
+  }
+
+  @Test
+  fun shouldSetSliderValueToDefault() {
+    viewHolder.bind(
+      QuestionnaireItemViewItem(
+        Questionnaire.Item.getDefaultInstance(),
+        QuestionnaireResponse.Item.newBuilder().apply {
+          addAnswer(
+            QuestionnaireResponse.Item.Answer.newBuilder().apply {
+              value =
+                QuestionnaireResponse.Item.Answer.ValueX.newBuilder()
+                  .setInteger(Integer.newBuilder().setValue(10).build())
+                  .build()
+            }
+          )
+          addAnswer(
+            QuestionnaireResponse.Item.Answer.newBuilder().apply {
+              value =
+                QuestionnaireResponse.Item.Answer.ValueX.newBuilder()
+                  .setInteger(Integer.newBuilder().setValue(10).build())
+                  .build()
+            }
+          )
+        }
+      ) {}
+    )
+
+    assertThat(viewHolder.itemView.findViewById<Slider>(R.id.slider).value).isEqualTo(0.0F)
+  }
+}

datacapture/src/main/java/com/google/android/fhir/datacapture/views/QuestionnaireItemSliderViewHolderFactory.kt

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.android.fhir.datacapture.views
+
+import android.view.View
+import android.widget.TextView
+import com.google.android.fhir.datacapture.R
+import com.google.android.material.slider.Slider
+import com.google.fhir.r4.core.Integer
+import com.google.fhir.r4.core.QuestionnaireResponse
+
+internal object QuestionnaireItemSliderViewHolderFactory :
+  QuestionnaireItemViewHolderFactory(R.layout.questionnaire_item_slider) {
+  override fun getQuestionnaireItemViewHolderDelegate(): QuestionnaireItemViewHolderDelegate =
+    object : QuestionnaireItemViewHolderDelegate {
+      private lateinit var sliderHeader: TextView
+      private lateinit var slider: Slider
+      private lateinit var questionnaireItemViewItem: QuestionnaireItemViewItem
+
+      override fun init(itemView: View) {
+        sliderHeader = itemView.findViewById(R.id.slider_header)
+        slider = itemView.findViewById(R.id.slider)
+      }
+
+      override fun bind(questionnaireItemViewItem: QuestionnaireItemViewItem) {
+        this.questionnaireItemViewItem = questionnaireItemViewItem
+        val questionnaireItem = questionnaireItemViewItem.questionnaireItem
+        val answer = questionnaireItemViewItem.singleAnswerOrNull
+        sliderHeader.text = questionnaireItem.text.value
+        slider.valueFrom = 0.0F
+        slider.valueTo = 100.0F
+        slider.stepSize = 10.0F
+        val sliderValue = answer?.value?.integer?.value?.toString() ?: "0.0"
+        slider.value = sliderValue.toFloat()
+
+        slider.addOnChangeListener { _, newValue, _ ->
+          // Responds to when slider's value is changed
+          questionnaireItemViewItem.singleAnswerOrNull =
+            QuestionnaireResponse.Item.Answer.newBuilder().apply {
+              value =
+                QuestionnaireResponse.Item.Answer.ValueX.newBuilder()
+                  .setInteger(Integer.newBuilder().setValue(newValue.toInt()).build())
+                  .build()
+            }
+          questionnaireItemViewItem.questionnaireResponseItemChangedCallback()
+        }
+      }
+    }
+}

datacapture/src/main/res/layout/questionnaire_item_slider.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginHorizontal="@dimen/item_margin_horizontal"
+    android:layout_marginVertical="@dimen/item_margin_vertical"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/slider_header"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" />
+
+    <com.google.android.material.slider.Slider
+        android:id="@+id/slider"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+</LinearLayout>

deps.gradle

@@ -33,7 +33,7 @@ versions.hapi_r4 = '5.3.0'
 versions.junit = '4.13'
 versions.kotlin = '1.4.30'
 versions.lifecycle = '2.2.0'
-versions.material = '1.1.0'
+versions.material = '1.3.0'
 versions.okhttp_logging_interceptor = '4.0.0'
 versions.recyclerview = '1.1.0'
 versions.retrofit = '2.7.2'