Merge branch 'issue-58' of isundil/pass into master

app/src/main/java/info/knacki/pass/input/InputService.java

@@ -5,7 +5,9 @@ import android.content.Context;
 import android.content.Intent;
 import android.inputmethodservice.InputMethodService;
 import android.os.Build;
+import android.os.Handler;
 import android.view.LayoutInflater;
+import android.view.MotionEvent;
 import android.view.View;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputMethodManager;
@@ -85,7 +87,41 @@ public class InputService extends InputMethodService implements PasswordClickLis
         fInputView.findViewById(R.id.prevButton).setOnClickListener(view -> {
             SwitchToPreviousInputMethod();
         });
-        fInputView.findViewById(R.id.backspaceButton).setOnClickListener(view -> getCurrentInputConnection().deleteSurroundingText(1, 0));
+        fInputView.findViewById(R.id.backspaceButton).setOnTouchListener(new View.OnTouchListener() {
+            private final static int INIT_DELAY = 650;
+            private final static int DELAY = 250;
+            private Handler handler;
+
+            @Override
+            public boolean onTouch(View v, MotionEvent event) {
+                switch (event.getAction()) {
+                    case MotionEvent.ACTION_DOWN:
+                        if (handler != null)
+                            return true;
+                        handler = new Handler();
+                        handler.postDelayed(fBackspaceHandler, INIT_DELAY);
+                        break;
+                    case MotionEvent.ACTION_UP:
+                        if (handler != null) {
+                            handler.removeCallbacks(fBackspaceHandler);
+                            handler = null;
+                        }
+                        fBackspaceHandler.run();
+                        v.performClick();
+                        break;
+                }
+                return false;
+            }
+
+            private final Runnable fBackspaceHandler = new Runnable() {
+                @Override
+                public void run() {
+                    getCurrentInputConnection().deleteSurroundingText(1, 0);
+                    if (handler != null)
+                        handler.postDelayed(this, DELAY);
+                }
+            };
+        });
         fInputView.findViewById(R.id.generateButton).setOnClickListener(view -> CreatePassword());
         fInputView.findViewById(R.id.openAppButton).setOnClickListener(view -> startActivity(new Intent(InputService.this, MainActivity.class)));
         return fInputView;