1 files changed, 107 insertions, 0 deletions
diff --git a/app/src/main/java/net/lacolaco/smileessence/view/page/CustomListFragment.kt b/app/src/main/java/net/lacolaco/smileessence/view/page/CustomListFragment.kt
new file mode 100644
index 00000000..d8536263
--- /dev/null
+++ b/app/src/main/java/net/lacolaco/smileessence/view/page/CustomListFragment.kt
@@ -0,0 +1,107 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2012-2014 lacolaco.net
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package net.lacolaco.smileessence.view.page
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.AbsListView
+import android.widget.ListView
+import com.handmark.pulltorefresh.library.PullToRefreshBase
+import com.handmark.pulltorefresh.library.PullToRefreshListView
+import net.lacolaco.smileessence.R
+import net.lacolaco.smileessence.World
+import net.lacolaco.smileessence.activity.MainActivity
+import net.lacolaco.smileessence.view.adapter.CustomListAdapter
+
+abstract class CustomListFragment<T : CustomListAdapter<*>> : PageFragment<T>(), AbsListView.OnScrollListener, PullToRefreshBase.OnRefreshListener2<ListView> {
+
+    // --------------------- GETTER / SETTER METHODS ---------------------
+
+    protected open val refreshMode: PullToRefreshBase.Mode
+        get() = PullToRefreshBase.Mode.DISABLED
+
+    // ------------------------ INTERFACE METHODS ------------------------
+
+
+    // --------------------- Interface OnRefreshListener2 ---------------------
+
+    override fun onPullDownToRefresh(refreshView: PullToRefreshBase<ListView>) {}
+
+    override fun onPullUpToRefresh(refreshView: PullToRefreshBase<ListView>) {}
+
+    // --------------------- Interface OnScrollListener ---------------------
+
+    override fun onScrollStateChanged(absListView: AbsListView, scrollState: Int) {
+        val adapter = adapter
+        if (scrollState != AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL &&
+                absListView.firstVisiblePosition == 0 && (absListView.getChildAt(0) == null || absListView.getChildAt(0).top == 0)) {
+            adapter.setNotifiable(true)
+            updateListViewWithNotice(absListView, true)
+        } else {
+            adapter.setNotifiable(false)
+        }
+    }
+
+    override fun onScroll(absListView: AbsListView, i: Int, i2: Int, i3: Int) {}
+
+    // ------------------------ OVERRIDE METHODS ------------------------
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup, savedInstanceState: Bundle?): View {
+        val page = inflater.inflate(R.layout.fragment_list, container, false)
+        val listView = getListView(page)
+        listView.setAdapter(adapter)
+        listView.setOnScrollListener(this)
+        listView.setOnRefreshListener(this)
+        listView.mode = refreshMode
+        return page
+    }
+
+    protected open fun getListView(page: View): PullToRefreshListView {
+        return page.findViewById(R.id.fragment_list_listview) as PullToRefreshListView
+    }
+
+    protected fun updateListViewWithNotice(absListView: AbsListView, addedToTop: Boolean) {
+        val adapter = adapter
+        val before = adapter.count
+        adapter.notifyDataSetChanged() // synchronized call (not adapter#updateForce())
+        val after = adapter.count
+        val increments = after - before
+        if (increments > 0) {
+            if (addedToTop) {
+                absListView.setSelection(increments + 1)
+                absListView.smoothScrollToPositionFromTop(increments, 0)
+                absListView.setSelection(increments)
+            } else {
+                absListView.smoothScrollToPositionFromTop(before, 0)
+            }
+
+            if (increments > 1) {
+                adapter.setNotifiable(false)
+            }
+        }
+    }
+}