show dummy item if there are no secret keys

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/KeyListFragment.java

@@ -29,6 +29,8 @@ import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.database.Cursor;
+import android.database.MatrixCursor;
+import android.database.MergeCursor;
 import android.graphics.Color;
 import android.net.Uri;
 import android.os.Build;
@@ -265,7 +267,6 @@ public class KeyListFragment extends LoaderFragment
     static final String ORDER =
             KeyRings.HAS_ANY_SECRET + " DESC, UPPER(" + KeyRings.USER_ID + ") ASC";
 
-
     @Override
     public Loader<Cursor> onCreateLoader(int id, Bundle args) {
         // This is called when a new Loader needs to be created. This
@@ -298,6 +299,22 @@ public class KeyListFragment extends LoaderFragment
         // Swap the new cursor in. (The framework will take care of closing the
         // old cursor once we return.)
         mAdapter.setSearchQuery(mQuery);
+
+        if (data != null && data.moveToFirst()) {
+            boolean isSecret = data.getInt(KeyListAdapter.INDEX_HAS_ANY_SECRET) != 0;
+            if (!isSecret) {
+                MatrixCursor headerCursor = new MatrixCursor(KeyListAdapter.PROJECTION);
+                Long[] row = new Long[KeyListAdapter.PROJECTION.length];
+                row[KeyListAdapter.INDEX_HAS_ANY_SECRET] = 1L;
+                row[KeyListAdapter.INDEX_MASTER_KEY_ID] = 0L;
+                headerCursor.addRow(row);
+
+                Cursor dataCursor = data;
+                data = new MergeCursor(new Cursor[] {
+                        headerCursor, dataCursor
+                });
+            }
+        }
         mAdapter.swapCursor(data);
 
         mStickyList.setAdapter(mAdapter);
@@ -722,6 +739,29 @@ public class KeyListFragment extends LoaderFragment
             return v;
         }
 
+        @Override
+        public void bindView(View view, Context context, Cursor cursor) {
+            boolean isSecret = cursor.getInt(INDEX_HAS_ANY_SECRET) != 0;
+            long masterKeyId = cursor.getLong(INDEX_MASTER_KEY_ID);
+            if (isSecret && masterKeyId == 0L) {
+
+                // sort of a hack: if this item isn't enabled, we make it clickable
+                // to intercept its click events
+                view.setClickable(true);
+
+                KeyItemViewHolder h = (KeyItemViewHolder) view.getTag();
+                h.setDummy(new OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        createKey();
+                    }
+                });
+                return;
+            }
+
+            super.bindView(view, context, cursor);
+        }
+
         private class HeaderViewHolder {
             TextView mText;
             TextView mCount;
@@ -760,6 +800,10 @@ public class KeyListFragment extends LoaderFragment
             if (mCursor.getInt(INDEX_HAS_ANY_SECRET) != 0) {
                 { // set contact count
                     int num = mCursor.getCount();
+                    // If this is a dummy secret key, subtract one
+                    if (mCursor.getLong(INDEX_MASTER_KEY_ID) == 0L) {
+                        num -= 1;
+                    }
                     String contactsTotal = mContext.getResources().getQuantityString(R.plurals.n_keys, num, num);
                     holder.mCount.setText(contactsTotal);
                     holder.mCount.setVisibility(View.VISIBLE);
@@ -818,8 +862,9 @@ public class KeyListFragment extends LoaderFragment
 
         public boolean isAnySecretSelected() {
             for (int pos : mSelection.keySet()) {
-                if (isSecretAvailable(pos))
+                if (isSecretAvailable(pos)) {
                     return true;
+                }
             }
             return false;
         }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/KeyAdapter.java

@@ -31,6 +31,7 @@ import android.support.v4.widget.CursorAdapter;
 import android.text.format.DateUtils;
 import android.view.LayoutInflater;
 import android.view.View;
+import android.view.View.OnClickListener;
 import android.view.ViewGroup;
 import android.widget.ImageButton;
 import android.widget.ImageView;
@@ -89,6 +90,8 @@ public class KeyAdapter extends CursorAdapter {
 
     public static class KeyItemViewHolder {
         public View mView;
+        public View mLayoutDummy;
+        public View mLayoutData;
         public Long mMasterKeyId;
         public TextView mMainUserId;
         public TextView mMainUserIdRest;
@@ -101,6 +104,8 @@ public class KeyAdapter extends CursorAdapter {
 
         public KeyItemViewHolder(View view) {
             mView = view;
+            mLayoutData = view.findViewById(R.id.key_list_item_data);
+            mLayoutDummy = view.findViewById(R.id.key_list_item_dummy);
             mMainUserId = (TextView) view.findViewById(R.id.key_list_item_name);
             mMainUserIdRest = (TextView) view.findViewById(R.id.key_list_item_email);
             mStatus = (ImageView) view.findViewById(R.id.key_list_item_status_icon);
@@ -111,6 +116,9 @@ public class KeyAdapter extends CursorAdapter {
 
         public void setData(Context context, KeyItem item, Highlighter highlighter, boolean enabled) {
 
+            mLayoutData.setVisibility(View.VISIBLE);
+            mLayoutDummy.setVisibility(View.GONE);
+
             mDisplayedItem = item;
 
             { // set name and stuff, common to both key types
@@ -129,7 +137,7 @@ public class KeyAdapter extends CursorAdapter {
             }
 
             // sort of a hack: if this item isn't enabled, we make it clickable
-            // to intercept its click events
+            // to intercept its click events. either way, no listener!
             mView.setClickable(!enabled);
 
             { // set edit button and status, specific by key type
@@ -200,6 +208,20 @@ public class KeyAdapter extends CursorAdapter {
 
         }
 
+        /** Shows the "you have no keys yet" dummy view, and sets an OnClickListener. */
+        public void setDummy(OnClickListener listener) {
+
+            // just reset everything to display the dummy layout
+            mLayoutDummy.setVisibility(View.VISIBLE);
+            mLayoutData.setVisibility(View.GONE);
+            mSlinger.setVisibility(View.GONE);
+            mStatus.setVisibility(View.GONE);
+            mView.setClickable(false);
+
+            mLayoutDummy.setOnClickListener(listener);
+
+        }
+
     }
 
     public boolean isEnabled(Cursor cursor) {

OpenKeychain/src/main/res/layout/key_list_item.xml

@@ -11,6 +11,55 @@
     android:focusable="false">
 
     <LinearLayout
+        android:id="@+id/key_list_item_dummy"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:focusable="true"
+        android:visibility="gone"
+        android:background="?android:selectableItemBackground"
+        tools:visibility="visible">
+
+        <LinearLayout
+            android:layout_width="0dip"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_vertical"
+            android:layout_weight="1"
+            android:orientation="vertical"
+            android:paddingLeft="8dp"
+            android:paddingRight="4dp"
+            android:paddingTop="4dp"
+            android:paddingBottom="4dp"
+            >
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:singleLine="true"
+                android:text="You don't have any keys yet!"
+                android:textAppearance="?android:attr/textAppearanceMedium" />
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:singleLine="true"
+                android:text="Click here to create or import one."
+                android:textAppearance="?android:attr/textAppearanceSmall" />
+
+        </LinearLayout>
+
+        <ImageView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:padding="16dp"
+            android:src="@drawable/ic_key_plus_grey600_24dp"
+            />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:id="@+id/key_list_item_data"
         android:layout_width="0dip"
         android:layout_height="wrap_content"
         android:layout_gravity="center_vertical"
@@ -20,7 +69,8 @@
         android:paddingLeft="8dp"
         android:paddingRight="4dp"
         android:paddingTop="4dp"
-        android:paddingBottom="4dp">
+        android:paddingBottom="4dp"
+        tools:visibility="gone">
 
         <TextView
             android:id="@+id/key_list_item_name"