Candidates view message when no dictionary installed

The message is updated when the config is refreshed.

Author: Julow

res/layout/candidates_status_no_dict.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" style="@style/candidates_status">
+  <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/candidates_status_no_dict"/>
+  <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/candidates_status_install" android:onClick="launch_dictionaries_activity"/>
+</LinearLayout>

res/layout/keyboard.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:hardwareAccelerated="false" android:orientation="vertical" android:background="?attr/colorKeyboard">
-  <juloo.keyboard2.suggestions.CandidatesView android:id="@+id/candidates_view" android:layout_width="match_parent" android:layout_height="48dp" android:orientation="horizontal">
+  <juloo.keyboard2.suggestions.CandidatesView android:id="@+id/candidates_view" android:layout_width="match_parent" android:layout_height="48dp" android:orientation="horizontal" android:gravity="center">
     <TextView android:id="@+id/candidates_left" style="@style/candidates_item" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="1"/>
     <TextView android:id="@+id/candidates_middle" style="@style/candidates_item" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="1"/>
     <TextView android:id="@+id/candidates_right" style="@style/candidates_item" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="1"/>

res/values/strings.xml

@@ -153,5 +153,7 @@
     <string name="dictionaries_from_internet">Download a dictionary from the Internet</string>
     <string name="dictionaries_download_success">Dictionary installed</string>
     <string name="dictionaries_download_failed">Download failed</string>
+    <string name="candidates_status_no_dict">No dictionary installed</string>
+    <string name="candidates_status_install">Install</string>
     <string name="dict_name_fr">French</string>
 </resources>

res/values/styles.xml

@@ -6,6 +6,13 @@
     <item name="android:textSize">18sp</item>
     <item name="android:textColor">?attr/colorLabel</item>
   </style>
+  <style name="candidates_status">
+    <item name="android:layout_width">match_parent</item>
+    <item name="android:layout_height">wrap_content</item>
+    <item name="android:gravity">center</item>
+    <item name="android:textSize">18sp</item>
+    <item name="android:textColor">?attr/colorLabel</item>
+  </style>
   <!-- Emoji pane -->
   <style name="emojiTypeButton">
     <item name="android:padding">1px</item>

srcs/juloo.keyboard2/Keyboard2.java

@@ -26,6 +26,7 @@
 import java.util.List;
 import java.util.Set;
 import juloo.keyboard2.dict.Dictionaries;
+import juloo.keyboard2.dict.DictionariesActivity;
 import juloo.keyboard2.prefs.LayoutsPreference;
 import juloo.keyboard2.suggestions.CandidatesView;
 
@@ -280,6 +281,7 @@ private void refresh_config()
     // Set keyboard background opacity
     _container_view.getBackground().setAlpha(_config.keyboardOpacity);
     _keyboardView.reset();
+    _candidates_view.refresh_status();
   }
 
   private KeyboardData refresh_special_layout(EditorInfo info)
@@ -424,6 +426,19 @@ public boolean onEvaluateFullscreenMode()
     return false;
   }
 
+  /** Called from [onClick] attributes. */
+  public void launch_dictionaries_activity(View v)
+  {
+    start_activity(DictionariesActivity.class);
+  }
+
+  void start_activity(Class cls)
+  {
+    Intent intent = new Intent(this, cls);
+    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+    startActivity(intent);
+  }
+
   /** Not static */
   public class Receiver implements KeyEventHandler.IReceiver
   {
@@ -432,9 +447,7 @@ public void handle_event_key(KeyValue.Event ev)
       switch (ev)
       {
         case CONFIG:
-          Intent intent = new Intent(Keyboard2.this, SettingsActivity.class);
-          intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-          startActivity(intent);
+          start_activity(SettingsActivity.class);
           break;
 
         case SWITCH_TEXT:

srcs/juloo.keyboard2/suggestions/CandidatesView.java

@@ -27,6 +27,10 @@ public class CandidatesView extends LinearLayout
       set to [GONE] when there are less than [NUM_CANDIDATES] suggestions. */
   TextView[] _item_views = new TextView[NUM_CANDIDATES];
 
+  /** Optional view showing a message to the user. Visible when no candidates
+      are shown. Might be [null]. */
+  View _status_no_dict = null; // Dictionary not installed
+
   public CandidatesView(Context context, AttributeSet attrs)
   {
     super(context, attrs);
@@ -63,6 +67,36 @@ public void set_candidates(List<String> suggestions)
     }
   }
 
+  /** Refresh the status messages after a configuration refresh. The status
+      message indicates whether the dictionaries should be installed. */
+  public void refresh_status()
+  {
+    set_candidates(Suggestions.NO_SUGGESTIONS);
+    _status_no_dict = inflate_and_show(_status_no_dict,
+        (_config.current_dictionary == null),
+        R.layout.candidates_status_no_dict);
+  }
+
+  /** Show or hide a status view and inflate it if needed. */
+  View inflate_and_show(View v, boolean show, int layout_id)
+  {
+    if (!show)
+    {
+      if (v != null)
+        v.setVisibility(View.GONE);
+    }
+    else
+    {
+      if (v == null)
+      {
+        v = View.inflate(getContext(), layout_id, null);
+        addView(v);
+      }
+      v.setVisibility(View.VISIBLE);
+    }
+    return v;
+  }
+
   private void setup_item_view(final int item_index, int item_id)
   {
     TextView v = (TextView)findViewById(item_id);
@@ -80,6 +114,7 @@ public void onClick(View _v)
     _item_views[item_index] = v;
   }
 
+  /** Whether the candidates view should be shown for a given editor. */
   public static boolean should_show(EditorInfo info)
   {
     int variation = info.inputType & InputType.TYPE_MASK_VARIATION;