Load more branches

app/build.gradle

@@ -96,7 +96,7 @@ ext {
     retrofitVersion = '2.3.0'
     okHttpVersion = '3.9.1'
     butterknifeVersion = '8.8.1'
-    parcelerVersion = '1.1.9'
+    parcelerVersion = '1.1.10'
     reptarVersion = '2.5.1'
     adapterLayout = '1.1.2'
     materialDialogsVersion = '0.9.6.0'
@@ -143,7 +143,7 @@ dependencies {
     implementation 'org.greenrobot:eventbus:3.1.1'
-    implementation 'io.reactivex.rxjava2:rxjava:2.1.7'
+    implementation 'io.reactivex.rxjava2:rxjava:2.1.8'
     implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
     implementation "com.uber.autodispose:autodispose-kotlin:$autodisposeVersion"
@@ -169,7 +169,7 @@ dependencies {
     implementation 'com.github.Commit451:Gimbal:2.0.2'
     implementation 'com.github.Commit451:Teleprinter:2.0.0'
     implementation 'com.github.Commit451:Jounce:1.0.2'
-    implementation 'com.github.Commit451:ForegroundViews:2.4.0'
+    implementation 'com.github.Commit451:ForegroundViews:2.4.4'
     implementation 'com.github.Commit451:MorphTransitions:2.0.0'
     implementation "com.github.Commit451:Alakazam:2.0.0"
     implementation 'com.github.Commit451:Lift:2.0.1'
@@ -195,7 +195,7 @@ dependencies {
     implementation 'com.github.alorma:diff-textview:1.3.0'
-    implementation 'com.wdullaer:materialdatetimepicker:3.4.0'
+    implementation 'com.wdullaer:materialdatetimepicker:3.5.0'
     implementation 'com.github.novoda:simple-chrome-custom-tabs:0.1.5'

app/src/main/java/com/commit451/gitlab/adapter/BranchAdapter.kt

@@ -48,6 +48,14 @@ class BranchAdapter(private val ref: Ref?, private val listener: BranchAdapter.L
         notifyDataSetChanged()
     }
+    fun addEntries(entries: Collection<Branch>) {
+        if (!entries.isEmpty()) {
+            val start = values.size
+            this.values.addAll(entries)
+            notifyItemRangeChanged(start, this.values.size)
+        }
+    }
+
     private fun getEntry(position: Int): Branch {
         return values[position]
     }

app/src/main/java/com/commit451/gitlab/api/GitLabService.kt

@@ -277,7 +277,10 @@ interface GitLabService {
     /* --- REPOSITORY --- */
     @GET(API_VERSION + "/projects/{id}/repository/branches?order_by=last_activity_at")
-    fun getBranches(@Path("id") projectId: Long): Single<List<Branch>>
+    fun getBranches(@Path("id") projectId: Long): Single<Response<List<Branch>>>
+
+    @GET
+    fun getBranches(@Url url: String): Single<Response<List<Branch>>>
     @GET(API_VERSION + "/projects/{id}/repository/contributors")
     fun getContributors(@Path("id") projectId: String): Single<List<Contributor>>

app/src/main/java/com/commit451/gitlab/fragment/PickBranchFragment.kt

@@ -2,6 +2,7 @@ package com.commit451.gitlab.fragment
 import android.app.Activity
 import android.content.Intent
+import android.net.Uri
 import android.os.Bundle
 import android.support.v7.widget.LinearLayoutManager
 import android.support.v7.widget.RecyclerView
@@ -20,7 +21,9 @@ import com.commit451.gitlab.adapter.BranchAdapter
 import com.commit451.gitlab.extension.with
 import com.commit451.gitlab.model.Ref
 import com.commit451.gitlab.model.api.Branch
-import com.commit451.gitlab.rx.CustomSingleObserver
+import com.commit451.gitlab.rx.CustomResponseSingleObserver
+import com.commit451.gitlab.util.LinkHeaderParser
+import com.commit451.gitlab.util.OnScrollLoadMoreListener
 import timber.log.Timber
 /**
@@ -30,8 +33,8 @@ class PickBranchFragment : ButterKnifeFragment() {
     companion object {
-        private val EXTRA_PROJECT_ID = "project_id"
-        private val EXTRA_REF = "ref"
+        private const val EXTRA_PROJECT_ID = "project_id"
+        private const val EXTRA_REF = "ref"
         fun newInstance(projectId: Long, ref: Ref?): PickBranchFragment {
             val fragment = PickBranchFragment()
@@ -43,14 +46,20 @@ class PickBranchFragment : ButterKnifeFragment() {
         }
     }
-    @BindView(R.id.list) lateinit var listProjects: RecyclerView
-    @BindView(R.id.message_text) lateinit var textMessage: TextView
-    @BindView(R.id.progress) lateinit var progress: View
+    @BindView(R.id.list)
+    lateinit var listProjects: RecyclerView
+    @BindView(R.id.message_text)
+    lateinit var textMessage: TextView
+    @BindView(R.id.progress)
+    lateinit var progress: View
     lateinit var adapterBranches: BranchAdapter
     var projectId: Long = 0
+    var nextPageUrl: Uri? = null
+    var loading: Boolean = false
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         projectId = arguments?.getLong(EXTRA_PROJECT_ID)!!
@@ -73,22 +82,26 @@ class PickBranchFragment : ButterKnifeFragment() {
                 activity?.finish()
             }
         })
-        listProjects.layoutManager = LinearLayoutManager(activity)
+        val layoutManager = LinearLayoutManager(activity)
+        listProjects.layoutManager = layoutManager
         listProjects.adapter = adapterBranches
+        listProjects.addOnScrollListener(OnScrollLoadMoreListener(layoutManager, {
+            !loading && nextPageUrl != null
+        }, {
+            loadMore()
+        }))
         loadData()
     }
     override fun loadData() {
-        if (view == null) {
-            return
-        }
+        loading = true
         progress.visibility = View.VISIBLE
         textMessage.visibility = View.GONE
         App.get().gitLab.getBranches(projectId)
                 .with(this)
-                .subscribe(object : CustomSingleObserver<List<Branch>>() {
+                .subscribe(object : CustomResponseSingleObserver<List<Branch>>() {
                     override fun error(e: Throwable) {
                         Timber.e(e)
@@ -96,10 +109,31 @@ class PickBranchFragment : ButterKnifeFragment() {
                         textMessage.visibility = View.VISIBLE
                     }
-                    override fun success(branches: List<Branch>) {
+                    override fun responseNonNullSuccess(branches: List<Branch>) {
+                        loading = false
+                        nextPageUrl = LinkHeaderParser.parse(response()).next
                         progress.visibility = View.GONE
                         adapterBranches.setEntries(branches)
                     }
                 })
     }
+
+    fun loadMore() {
+        loading = true
+        App.get().gitLab.getBranches(nextPageUrl.toString())
+                .with(this)
+                .subscribe(object : CustomResponseSingleObserver<List<Branch>>() {
+
+                    override fun error(e: Throwable) {
+                        Timber.e(e)
+                        loading = false
+                    }
+
+                    override fun responseNonNullSuccess(branches: List<Branch>) {
+                        loading = false
+                        nextPageUrl = LinkHeaderParser.parse(response()).next
+                        adapterBranches.addEntries(branches)
+                    }
+                })
+    }
 }

app/src/main/java/com/commit451/gitlab/util/LinkHeaderParser.kt

@@ -11,10 +11,10 @@ import timber.log.Timber
  */
 object LinkHeaderParser {
-    private val PREV_PAGE_SUFFIX = "rel=\"prev\""
-    private val NEXT_PAGE_SUFFIX = "rel=\"next\""
-    private val FIRST_PAGE_SUFFIX = "rel=\"first\""
-    private val LAST_PAGE_SUFFIX = "rel=\"last\""
+    private const val PREV_PAGE_SUFFIX = "rel=\"prev\""
+    private const val NEXT_PAGE_SUFFIX = "rel=\"next\""
+    private const val FIRST_PAGE_SUFFIX = "rel=\"first\""
+    private const val LAST_PAGE_SUFFIX = "rel=\"last\""
     fun parse(response: Response<*>): PaginationData {
         var prev: Uri? = null

app/src/main/java/com/commit451/gitlab/util/OnScrollLoadMoreListener.kt

+package com.commit451.gitlab.util
+
+import android.support.v7.widget.LinearLayoutManager
+import android.support.v7.widget.RecyclerView
+
+class OnScrollLoadMoreListener(private val layoutManager: LinearLayoutManager, private val shouldLoadMore: () -> Boolean, private val loadMore: () -> Unit) : RecyclerView.OnScrollListener() {
+
+    override fun onScrolled(recyclerView: RecyclerView?, dx: Int, dy: Int) {
+        super.onScrolled(recyclerView, dx, dy)
+        val visibleItemCount = layoutManager.childCount
+        val totalItemCount = layoutManager.itemCount
+        val firstVisibleItem = layoutManager.findFirstVisibleItemPosition()
+        if (firstVisibleItem + visibleItemCount >= totalItemCount && shouldLoadMore.invoke()) {
+            loadMore.invoke()
+        }
+    }
+}
\ No newline at end of file

build.gradle

 apply plugin: 'com.github.ben-manes.versions'
 apply plugin: 'com.commit451.updatewrapper'
 buildscript {
-    ext.kotlinVersion = '1.2.10'
+    ext.kotlinVersion = '1.2.20'
     repositories {
         jcenter()
         maven { url "https://jitpack.io" }