Add swipe refresh to grade fragment (#287)

.travis.yml

@@ -14,6 +14,7 @@ cache:
 branches:
   only:
   - master
+  - 0.7.x
 
 android:
  licenses:

app/build.gradle

@@ -77,7 +77,7 @@ play {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation('com.github.wulkanowy:api:0aea843800') { exclude module: "threetenbp" }
+    implementation('com.github.wulkanowy:api:bc60169383') { exclude module: "threetenbp" }
 
     implementation "androidx.legacy:legacy-support-v4:1.0.0"
     implementation "androidx.appcompat:appcompat:1.0.2"

app/src/main/java/io/github/wulkanowy/ui/modules/grade/GradeFragment.kt

@@ -29,6 +29,8 @@ class GradeFragment : BaseSessionFragment(), GradeView, MainView.MainChildView,
     @Inject
     lateinit var pagerAdapter: BaseFragmentPagerAdapter
 
+    private var semesterSwitchMenu: MenuItem? = null
+
     companion object {
         private const val SAVED_SEMESTER_KEY = "CURRENT_SEMESTER"
 
@@ -57,6 +59,8 @@ class GradeFragment : BaseSessionFragment(), GradeView, MainView.MainChildView,
 
     override fun onCreateOptionsMenu(menu: Menu?, inflater: MenuInflater?) {
         inflater?.inflate(R.menu.action_menu_grade, menu)
+        semesterSwitchMenu = menu?.findItem(R.id.gradeMenuSemester)
+        presenter.onCreateMenu()
     }
 
     override fun initView() {
@@ -75,6 +79,7 @@ class GradeFragment : BaseSessionFragment(), GradeView, MainView.MainChildView,
             setOnSelectPageListener { presenter.onPageSelected(it) }
         }
         gradeTabLayout.setupWithViewPager(gradeViewPager)
+        gradeSwipe.setOnRefreshListener { presenter.onSwipeRefresh() }
     }
 
     override fun onOptionsItemSelected(item: MenuItem?): Boolean {
@@ -95,8 +100,20 @@ class GradeFragment : BaseSessionFragment(), GradeView, MainView.MainChildView,
         gradeProgress.visibility = if (show) VISIBLE else INVISIBLE
     }
 
-    override fun showEmpty() {
+    override fun showEmpty(show: Boolean) {
-        gradeEmpty.visibility = VISIBLE
+        gradeEmpty.visibility = if (show) VISIBLE else INVISIBLE
+    }
+
+    override fun showRefresh(show: Boolean) {
+        gradeSwipe.isRefreshing = show
+    }
+
+    override fun showSemesterSwitch(show: Boolean) {
+        semesterSwitchMenu?.isVisible = show
+    }
+
+    override fun enableSwipe(enable: Boolean) {
+        gradeSwipe.isEnabled = enable
     }
 
     override fun showSemesterDialog(selectedIndex: Int) {

app/src/main/java/io/github/wulkanowy/ui/modules/grade/GradePresenter.kt

@@ -33,11 +33,18 @@ class GradePresenter @Inject constructor(
         disposable.add(Completable.timer(150, MILLISECONDS, schedulers.mainThread)
             .subscribe {
                 selectedIndex = savedIndex ?: 0
-                view.initView()
+                view.run {
+                    initView()
+                    enableSwipe(false)
+                }
                 loadData()
             })
     }
 
+    fun onCreateMenu() {
+        if (semesters.isEmpty()) view?.showSemesterSwitch(false)
+    }
+
     fun onViewReselected() {
         Timber.i("Grade view is reselected")
         view?.run { notifyChildParentReselected(currentPageIndex) }
@@ -69,6 +76,7 @@ class GradePresenter @Inject constructor(
         view?.apply {
             showContent(true)
             showProgress(false)
+            showEmpty(false)
             loadedSemesterId[currentPageIndex] = semesterId
         }
     }
@@ -77,6 +85,10 @@ class GradePresenter @Inject constructor(
         loadChild(index)
     }
 
+    fun onSwipeRefresh() {
+        loadData()
+    }
+
     private fun loadData() {
         Timber.i("Loading grade data started")
         disposable.add(studentRepository.getCurrentStudent()
@@ -89,17 +101,21 @@ class GradePresenter @Inject constructor(
             }
             .subscribeOn(schedulers.backgroundThread)
             .observeOn(schedulers.mainThread)
+            .doFinally { view?.showRefresh(false) }
             .subscribe({
                 view?.run {
                     Timber.i("Loading grade result: Attempt load index $currentPageIndex")
                     loadChild(currentPageIndex)
+                    enableSwipe(false)
+                    showSemesterSwitch(true)
                 }
             }) {
                 Timber.i("Loading grade result: An exception occurred")
                 errorHandler.dispatch(it)
                 view?.run {
                     showProgress(false)
-                    showEmpty()
+                    showEmpty(true)
+                    enableSwipe(true)
                 }
             })
     }

app/src/main/java/io/github/wulkanowy/ui/modules/grade/GradeView.kt

@@ -12,10 +12,16 @@ interface GradeView : BaseSessionView {
 
     fun showProgress(show: Boolean)
 
-    fun showEmpty()
+    fun showEmpty(show: Boolean)
+
+    fun showRefresh(show: Boolean)
+
+    fun showSemesterSwitch(show: Boolean)
 
     fun showSemesterDialog(selectedIndex: Int)
 
+    fun enableSwipe(enable: Boolean)
+
     fun notifyChildLoadData(index: Int, semesterId: Int, forceRefresh: Boolean)
 
     fun notifyChildParentReselected(index: Int)

app/src/main/res/layout/fragment_grade.xml

@@ -17,13 +17,19 @@
         app:tabTextColor="@android:color/white"
         tools:visibility="visible" />
 
+    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+        android:id="@+id/gradeSwipe"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginTop="48dp">
+
         <androidx.viewpager.widget.ViewPager
             android:id="@+id/gradeViewPager"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-        android:layout_marginTop="48dp"
             android:visibility="invisible"
             tools:visibility="visible" />
+    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 
     <ProgressBar
         android:id="@+id/gradeProgress"