From e11e4863d376889e80fc89acc53eb257e17ad60d Mon Sep 17 00:00:00 2001
From: Arty Bishop <bishop.arty@gmail.com>
Date: Tue, 21 Jan 2020 16:35:23 +0000
Subject: [PATCH] Showing the information layout when no satellites are
 selected

---
 .../com/rtbishop/look4sat/MainViewModel.kt    |   1 -
 .../rtbishop/look4sat/ui/PassListFragment.kt  |  10 ++
 app/src/main/res/drawable/ic_arrow_swipe.xml  |  28 +++
 app/src/main/res/drawable/ic_sputnik.xml      |  31 ++++
 app/src/main/res/layout/card_pass.xml         |   2 +-
 .../main/res/layout/fragment_pass_list.xml    | 162 ++++++++++++++++--
 app/src/main/res/values/strings.xml           |  14 +-
 app/src/main/res/values/styles.xml            |  24 +++
 8 files changed, 250 insertions(+), 22 deletions(-)
 create mode 100644 app/src/main/res/drawable/ic_arrow_swipe.xml
 create mode 100644 app/src/main/res/drawable/ic_sputnik.xml

diff --git a/app/src/main/java/com/rtbishop/look4sat/MainViewModel.kt b/app/src/main/java/com/rtbishop/look4sat/MainViewModel.kt
index 489c37bb..daed0361 100644
--- a/app/src/main/java/com/rtbishop/look4sat/MainViewModel.kt
+++ b/app/src/main/java/com/rtbishop/look4sat/MainViewModel.kt
@@ -69,7 +69,6 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
 
     private val urlList = listOf(
         "https://celestrak.com/NORAD/elements/amateur.txt",
-        "https://celestrak.com/NORAD/elements/starlink.txt",
         "https://celestrak.com/NORAD/elements/weather.txt"
     )
 
diff --git a/app/src/main/java/com/rtbishop/look4sat/ui/PassListFragment.kt b/app/src/main/java/com/rtbishop/look4sat/ui/PassListFragment.kt
index 464dab78..da79e6aa 100644
--- a/app/src/main/java/com/rtbishop/look4sat/ui/PassListFragment.kt
+++ b/app/src/main/java/com/rtbishop/look4sat/ui/PassListFragment.kt
@@ -29,6 +29,7 @@ import android.widget.ImageButton
 import android.widget.TextView
 import android.widget.Toast
 import androidx.appcompat.app.AlertDialog
+import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
@@ -55,6 +56,7 @@ class PassListFragment : Fragment() {
     private lateinit var aosTimer: CountDownTimer
     private lateinit var aosTimerText: TextView
     private lateinit var swipeLayout: SwipeRefreshLayout
+    private lateinit var infoLayout: ConstraintLayout
     private lateinit var mainActivity: MainActivity
     private lateinit var satPassList: MutableList<SatPass>
     private var isTimerSet: Boolean = false
@@ -86,6 +88,7 @@ class PassListFragment : Fragment() {
         aosTimerText = mainActivity.findViewById(R.id.toolbar_timer)
         btnPassPrefs = mainActivity.findViewById(R.id.toolbar_filter)
         swipeLayout = view.findViewById(R.id.pass_list_refresh)
+        infoLayout = view.findViewById(R.id.pass_info_layout)
         satPassRecycler = view.findViewById(R.id.pass_list_recycler)
         passListFab = view.findViewById(R.id.pass_list_fab)
     }
@@ -114,6 +117,13 @@ class PassListFragment : Fragment() {
         viewModel.passSatList.observe(viewLifecycleOwner, Observer {
             satPassList = it
             satPassAdapter.setList(satPassList)
+            if (satPassList.isNotEmpty()) {
+                infoLayout.visibility = View.INVISIBLE
+                satPassRecycler.visibility = View.VISIBLE
+            } else {
+                infoLayout.visibility = View.VISIBLE
+                satPassRecycler.visibility = View.INVISIBLE
+            }
             setTimer()
             swipeLayout.isRefreshing = false
         })
diff --git a/app/src/main/res/drawable/ic_arrow_swipe.xml b/app/src/main/res/drawable/ic_arrow_swipe.xml
new file mode 100644
index 00000000..82dd1415
--- /dev/null
+++ b/app/src/main/res/drawable/ic_arrow_swipe.xml
@@ -0,0 +1,28 @@
+<!--
+  ~ Look4Sat. Amateur radio & weather satellites passes calculator for Android.
+  ~ Copyright (C) 2019, 2020 Arty Bishop (bishop.arty@gmail.com)
+  ~
+  ~ This program is free software; you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by
+  ~ the Free Software Foundation; either version 2 of the License, or
+  ~ (at your option) any later version.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License along
+  ~ with this program; if not, write to the Free Software Foundation, Inc.,
+  ~ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+  -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#C0C0C0"
+        android:pathData="M20,12l-1.41,-1.41L13,16.17V4h-2v12.17l-5.58,-5.59L4,12l8,8 8,-8z" />
+</vector>
diff --git a/app/src/main/res/drawable/ic_sputnik.xml b/app/src/main/res/drawable/ic_sputnik.xml
new file mode 100644
index 00000000..fd5675fa
--- /dev/null
+++ b/app/src/main/res/drawable/ic_sputnik.xml
@@ -0,0 +1,31 @@
+<!--
+  ~ Look4Sat. Amateur radio & weather satellites passes calculator for Android.
+  ~ Copyright (C) 2019, 2020 Arty Bishop (bishop.arty@gmail.com)
+  ~
+  ~ This program is free software; you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by
+  ~ the Free Software Foundation; either version 2 of the License, or
+  ~ (at your option) any later version.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License along
+  ~ with this program; if not, write to the Free Software Foundation, Inc.,
+  ~ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+  -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="128dp"
+    android:height="128dp"
+    android:viewportWidth="128"
+    android:viewportHeight="128">
+    <path
+        android:fillColor="#52C0C0C0"
+        android:pathData="m96.642,31.504c7.911,7.997 17.143,13.584 25.365,15.581l1.754,-3.997C123.78,43.048 123.786,43.005 123.802,42.965 125.834,38.995 127,34.495 127,29.715 127,13.881 114.379,1 98.867,1c-5.125,0 -9.92,1.429 -14.064,3.884l-3.398,1.598c0.08,0.306 0.133,0.599 0.221,0.91 2.32,8.104 7.652,16.667 15.016,24.112z" />
+    <path
+        android:fillColor="#52C0C0C0"
+        android:pathData="M93.876,34.3C86.053,26.391 80.369,17.225 77.87,8.49 77.84,8.385 77.818,8.285 77.788,8.181L2.629,43.513c-1.404,0.66 -2.019,2.358 -1.372,3.791 0.472,1.046 1.485,1.663 2.545,1.663 0.392,0 0.79,-0.084 1.169,-0.263L74.045,16.235c-1.873,3.578 -2.997,7.611 -3.228,11.885L35.566,51.732c-1.294,0.866 -1.653,2.638 -0.805,3.957 0.538,0.836 1.431,1.29 2.344,1.29 0.526,0 1.06,-0.151 1.533,-0.469L71.189,34.707c1.4,8.11 6.135,15.044 12.715,19.285l-54.945,68.337c-0.981,1.22 -0.808,3.021 0.388,4.023 0.521,0.437 1.149,0.649 1.775,0.649 0.809,0 1.611,-0.357 2.166,-1.045L89.056,56.595c3.06,1.168 6.357,1.838 9.811,1.838 4.932,0 9.566,-1.312 13.601,-3.597L84.602,118.323c-0.633,1.44 0,3.131 1.41,3.777 0.372,0.17 0.76,0.25 1.144,0.25 1.07,0 2.092,-0.629 2.556,-1.691L120.402,50.739C111.642,48.416 102.042,42.555 93.876,34.3Z" />
+</vector>
diff --git a/app/src/main/res/layout/card_pass.xml b/app/src/main/res/layout/card_pass.xml
index ee40e721..fe2f4dfa 100644
--- a/app/src/main/res/layout/card_pass.xml
+++ b/app/src/main/res/layout/card_pass.xml
@@ -48,7 +48,7 @@
             style="@style/CardPassName"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_marginStart="4dp"
+            android:layout_marginStart="2dp"
             android:text="@string/pass_satName"
             app:layout_constraintBaseline_toBaselineOf="@+id/pass_satId"
             app:layout_constraintStart_toEndOf="@+id/pass_img" />
diff --git a/app/src/main/res/layout/fragment_pass_list.xml b/app/src/main/res/layout/fragment_pass_list.xml
index d2235dbc..4eef9a69 100644
--- a/app/src/main/res/layout/fragment_pass_list.xml
+++ b/app/src/main/res/layout/fragment_pass_list.xml
@@ -1,11 +1,29 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Look4Sat. Amateur radio & weather satellites passes calculator for Android.
+  ~ Copyright (C) 2019, 2020 Arty Bishop (bishop.arty@gmail.com)
+  ~
+  ~ This program is free software; you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by
+  ~ the Free Software Foundation; either version 2 of the License, or
+  ~ (at your option) any later version.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License along
+  ~ with this program; if not, write to the Free Software Foundation, Inc.,
+  ~ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+  -->
+
+<androidx.swiperefreshlayout.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/pass_list_refresh"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
-        android:id="@+id/pass_list_refresh"
+    <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
@@ -14,22 +32,132 @@
             android:layout_width="0dp"
             android:layout_height="0dp"
             android:paddingBottom="4dp"
+            android:visibility="invisible"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent" />
+            app:layout_constraintTop_toTopOf="parent">
 
-    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+        </androidx.recyclerview.widget.RecyclerView>
 
-    <com.google.android.material.floatingactionbutton.FloatingActionButton
-        android:id="@+id/pass_list_fab"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="bottom|end"
-        android:layout_marginEnd="16dp"
-        android:layout_marginBottom="16dp"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:srcCompat="@drawable/ic_sat_asc_left" />
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:id="@+id/pass_info_layout"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:visibility="visible"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent">
 
-</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
+            <ImageView
+                android:id="@+id/info_swipe_img"
+                android:layout_width="36dp"
+                android:layout_height="36dp"
+                android:layout_marginTop="8dp"
+                android:contentDescription="@string/placeholder"
+                app:layout_constraintEnd_toStartOf="@+id/guide_right"
+                app:layout_constraintStart_toStartOf="@+id/guide_left"
+                app:layout_constraintTop_toTopOf="@+id/guide_top"
+                app:srcCompat="@drawable/ic_arrow_swipe" />
+
+            <TextView
+                android:id="@+id/info_swipe_text"
+                style="@style/PassInfoText"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:gravity="center"
+                android:text="@string/info_swipe_text"
+                app:layout_constraintEnd_toStartOf="@+id/guide_right"
+                app:layout_constraintStart_toStartOf="@+id/guide_left"
+                app:layout_constraintTop_toBottomOf="@+id/info_swipe_img" />
+
+            <ImageView
+                android:id="@+id/info_img_sputnik"
+                android:layout_width="176dp"
+                android:layout_height="176dp"
+                android:contentDescription="@string/placeholder"
+                app:layout_constraintBottom_toTopOf="@+id/info_main_text"
+                app:layout_constraintEnd_toStartOf="@+id/guide_right"
+                app:layout_constraintStart_toStartOf="@+id/guide_left"
+                app:layout_constraintTop_toBottomOf="@+id/info_swipe_text"
+                app:layout_constraintVertical_chainStyle="packed"
+                app:srcCompat="@drawable/ic_sputnik" />
+
+            <TextView
+                android:id="@+id/info_main_text"
+                style="@style/PassInfoText"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:gravity="center"
+                android:text="@string/info_main_text"
+                app:layout_constraintBottom_toTopOf="@+id/info_select_text"
+                app:layout_constraintEnd_toStartOf="@+id/guide_right"
+                app:layout_constraintStart_toStartOf="@+id/guide_left"
+                app:layout_constraintTop_toTopOf="@+id/guide_center"
+                app:layout_constraintVertical_bias="0.25"
+                app:layout_constraintVertical_chainStyle="spread" />
+
+            <TextView
+                android:id="@+id/info_select_text"
+                style="@style/PassInfoText"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginEnd="64dp"
+                android:text="@string/info_select_text"
+                app:layout_constraintBottom_toTopOf="@+id/guide_bottom"
+                app:layout_constraintEnd_toStartOf="@+id/guide_right"
+                app:layout_constraintStart_toStartOf="@+id/guide_left" />
+
+            <androidx.constraintlayout.widget.Guideline
+                android:id="@+id/guide_top"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                app:layout_constraintGuide_begin="16dp" />
+
+            <androidx.constraintlayout.widget.Guideline
+                android:id="@+id/guide_left"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                app:layout_constraintGuide_begin="16dp" />
+
+            <androidx.constraintlayout.widget.Guideline
+                android:id="@+id/guide_center"
+                android:layout_width="0dp"
+                android:layout_height="0dp"
+                android:orientation="horizontal"
+                app:layout_constraintGuide_percent="0.5" />
+
+            <androidx.constraintlayout.widget.Guideline
+                android:id="@+id/guide_right"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                app:layout_constraintGuide_end="16dp" />
+
+            <androidx.constraintlayout.widget.Guideline
+                android:id="@+id/guide_bottom"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                app:layout_constraintGuide_end="16dp" />
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+
+        <com.google.android.material.floatingactionbutton.FloatingActionButton
+            android:id="@+id/pass_list_fab"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="bottom|end"
+            android:layout_marginEnd="16dp"
+            android:layout_marginBottom="16dp"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:srcCompat="@drawable/ic_sat_asc_left" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
\ 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 9a905fc7..1c9659a3 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ Look4Sat. Amateur radio & weather satellites passes calculator for Android.
   ~ Copyright (C) 2019, 2020 Arty Bishop (bishop.arty@gmail.com)
   ~
@@ -73,7 +72,7 @@
     <string name="no_mode">Mode: Null</string>
     <string name="no_uplink">Uplink: Null</string>
     <string name="no_downlink">Downlink: Null</string>
-    <string name="no_selected_sat">No satellites were shortlisted</string>
+    <string name="no_selected_sat">No satellites were selected</string>
     <string name="no_transmitters">No transmitters found for this Satellite</string>
 
     <string name="err_no_permissions">Missing permissions</string>
@@ -114,6 +113,15 @@
     <string name="trans_down_low">Downlink: %.4f MHz</string>
     <string name="trans_down_lowHigh">Downlink: %.4f - %.4f MHz</string>
 
+    <string name="info_swipe_text">
+        Swipe the screen to refresh the list of passes for selected satellites</string>
+    <string name="info_main_text">
+        Look4Sat is using the Two-Line Element set to calculate the satellites positions \n
+        You can update the TLE file via the corresponding button in the main menu \n \n
+        Once the list is calculated, press a pass item for detailed information</string>
+    <string name="info_select_text">
+        Press this button to select the satellites you wish to track</string>
+
     <string name="btn_yes">Yes</string>
     <string name="btn_no">No</string>
     <string name="btn_ok">OK</string>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 5bce5dc4..26d63e4f 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -1,3 +1,22 @@
+<!--
+  ~ Look4Sat. Amateur radio & weather satellites passes calculator for Android.
+  ~ Copyright (C) 2019, 2020 Arty Bishop (bishop.arty@gmail.com)
+  ~
+  ~ This program is free software; you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by
+  ~ the Free Software Foundation; either version 2 of the License, or
+  ~ (at your option) any later version.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License along
+  ~ with this program; if not, write to the Free Software Foundation, Inc.,
+  ~ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+  -->
+
 <resources>
 
     <style name="AppTheme" parent="Theme.MaterialComponents">
@@ -93,6 +112,11 @@
         <item name="android:textSize">15sp</item>
     </style>
 
+    <style name="PassInfoText">
+        <item name="android:textColor">@color/themeLight</item>
+        <item name="android:textSize">17sp</item>
+    </style>
+
     <style name="MapText">
         <item name="android:layout_width">wrap_content</item>
         <item name="android:layout_height">wrap_content</item>