attempt to automatically detect pins in clipboard

src/main/res/values/strings.xml

@@ -764,4 +764,5 @@
     <string name="please_enter_pin">Please enter the 6 digit pin below.</string>
     <string name="resend_sms">Resend SMS</string>
     <string name="back">back</string>
+    <string name="possible_pin">Automatically pasted possible pin from clipboard.</string>
 </resources>

src/quick/java/eu/siacs/conversations/ui/VerifyActivity.java

@@ -1,12 +1,19 @@
 package eu.siacs.conversations.ui;
 
+import android.content.ClipData;
+import android.content.ClipDescription;
+import android.content.ClipboardManager;
+import android.content.Context;
 import android.content.Intent;
 import android.databinding.DataBindingUtil;
 import android.os.Bundle;
+import android.support.design.widget.Snackbar;
 import android.support.v7.widget.Toolbar;
 import android.text.Html;
 import android.view.View;
 
+import java.util.ArrayList;
+
 import eu.siacs.conversations.R;
 import eu.siacs.conversations.databinding.ActivityVerifyBinding;
 import eu.siacs.conversations.entities.Account;
@@ -14,19 +21,30 @@ import eu.siacs.conversations.ui.util.PinEntryWrapper;
 import eu.siacs.conversations.utils.AccountUtils;
 import eu.siacs.conversations.utils.PhoneNumberUtilWrapper;
 
-public class VerifyActivity extends XmppActivity {
+import static android.content.ClipDescription.MIMETYPE_TEXT_PLAIN;
+
+public class VerifyActivity extends XmppActivity implements ClipboardManager.OnPrimaryClipChangedListener {
 
     private ActivityVerifyBinding binding;
     private Account account;
     private PinEntryWrapper pinEntryWrapper;
+    private ClipboardManager clipboardManager;
+    private String pasted = null;
+
 
     @Override
     protected void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        String pin = savedInstanceState != null ? savedInstanceState.getString("pin") : null;
+        this.pasted = savedInstanceState != null ? savedInstanceState.getString("pasted") : null;
         this.binding = DataBindingUtil.setContentView(this, R.layout.activity_verify);
         setSupportActionBar((Toolbar) this.binding.toolbar);
         this.pinEntryWrapper = new PinEntryWrapper(binding.pinBox);
+        if (pin != null) {
+            this.pinEntryWrapper.setPin(pin);
+        }
         binding.back.setOnClickListener(this::onBackButton);
+        clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
     }
 
     private void onBackButton(View view) {
@@ -51,4 +69,58 @@ public class VerifyActivity extends XmppActivity {
         }
         this.binding.weHaveSent.setText(Html.fromHtml(getString(R.string.we_have_sent_you_an_sms, PhoneNumberUtilWrapper.prettyPhoneNumber(this, this.account.getJid()))));
     }
+
+    @Override
+    public void onSaveInstanceState(Bundle savedInstanceState) {
+        savedInstanceState.putString("pin", this.pinEntryWrapper.getPin());
+        if (this.pasted != null) {
+            savedInstanceState.putString("pasted", this.pasted);
+        }
+        super.onSaveInstanceState(savedInstanceState);
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        clipboardManager.addPrimaryClipChangedListener(this);
+    }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+        clipboardManager.removePrimaryClipChangedListener(this);
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        if (pinEntryWrapper.isEmpty()) {
+            pastePinFromClipboard();
+        }
+    }
+
+    private void pastePinFromClipboard() {
+        final ClipDescription description = clipboardManager != null ? clipboardManager.getPrimaryClipDescription() : null;
+        if (description != null && description.hasMimeType(MIMETYPE_TEXT_PLAIN)) {
+            final ClipData primaryClip = clipboardManager.getPrimaryClip();
+            if (primaryClip != null && primaryClip.getItemCount() > 0) {
+                final CharSequence clip = primaryClip.getItemAt(0).getText();
+                if (PinEntryWrapper.isPin(clip) && !clip.toString().equals(this.pasted)) {
+                    this.pasted = clip.toString();
+                    pinEntryWrapper.setPin(clip.toString());
+                    final Snackbar snackbar = Snackbar.make(binding.coordinator, R.string.possible_pin, Snackbar.LENGTH_LONG);
+                    snackbar.setAction(R.string.undo, v -> pinEntryWrapper.clear());
+                    snackbar.show();
+                }
+            }
+        }
+    }
+
+    @Override
+    public void onPrimaryClipChanged() {
+        this.pasted = null;
+        if (pinEntryWrapper.isEmpty()) {
+            pastePinFromClipboard();
+        }
+    }
 }

src/quick/java/eu/siacs/conversations/ui/util/PinEntryWrapper.java

@@ -9,9 +9,13 @@ import android.widget.LinearLayout;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.regex.Pattern;
+
 
 public class PinEntryWrapper {
 
+    private static Pattern PIN_STRING_PATTERN = Pattern.compile("^[0-9]{6}$");
+
     private final List<EditText> digits = new ArrayList<>();
 
     private final TextWatcher textWatcher = new TextWatcher() {
@@ -68,6 +72,10 @@ public class PinEntryWrapper {
                         return true;
                     }
                 }
+                if (current != 0) {
+                    digits.get(0).requestFocus();
+                    return true;
+                }
             }
         }
         return false;
@@ -90,4 +98,42 @@ public class PinEntryWrapper {
         }
     }
 
+    public String getPin() {
+        char[] chars = new char[digits.size()];
+        for(int i = 0; i < chars.length; ++i) {
+            final String input = digits.get(i).getText().toString();
+            chars[i] = input.length() != 1 ? ' ' : input.charAt(0);
+        }
+        return String.valueOf(chars);
+    }
+
+    public void setPin(String pin) {
+        char[] chars = pin.toCharArray();
+        for(int i = 0; i < digits.size(); ++i) {
+            if (i < chars.length) {
+                final Editable editable = digits.get(i).getText();
+                editable.clear();
+                editable.append(Character.isDigit(chars[i]) ? String.valueOf(chars[i]) : "");
+            }
+        }
+    }
+
+    public boolean isEmpty() {
+        for(EditText digit : digits) {
+            if (digit.getText().length() > 0) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public static boolean isPin(CharSequence pin) {
+        return pin != null && PIN_STRING_PATTERN.matcher(pin).matches();
+    }
+
+    public void clear() {
+        for(int i = digits.size() - 1; i >= 0; --i) {
+            digits.get(i).getText().clear();
+        }
+    }
 }

src/quick/res/layout/activity_enter_number.xml

@@ -7,6 +7,10 @@
         android:orientation="vertical">
 
         <include android:id="@+id/toolbar" layout="@layout/toolbar" />
+        <android.support.design.widget.CoordinatorLayout
+            android:id="@+id/coordinator"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
 
         <ScrollView
             android:layout_width="match_parent"
@@ -36,12 +40,13 @@
                     android:orientation="vertical">
 
                     <EditText
+                        android:imeOptions="flagNoExtractUi"
                         android:id="@+id/country"
                         style="@style/Widget.Conversations.EditText"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
                         android:cursorVisible="false"
-                        android:drawableRight="@drawable/ic_arrow_drop_down_black_18dp"
+                        android:drawableEnd="@drawable/ic_arrow_drop_down_black_18dp"
                         android:focusable="false"
                         android:gravity="bottom|center_horizontal"
                         android:longClickable="false" />
@@ -52,6 +57,7 @@
                         android:orientation="horizontal">
 
                         <EditText
+                            android:imeOptions="flagNoExtractUi"
                             android:id="@+id/country_code"
                             style="@style/Widget.Conversations.EditText"
                             android:layout_width="0dp"
@@ -64,6 +70,7 @@
                             android:maxLines="1" />
 
                         <EditText
+                            android:imeOptions="flagNoExtractUi"
                             android:id="@+id/number"
                             style="@style/Widget.Conversations.EditText"
                             android:layout_width="0dp"
@@ -87,5 +94,6 @@
                     android:textColor="?colorAccent"/>
             </RelativeLayout>
         </ScrollView>
+        </android.support.design.widget.CoordinatorLayout>
     </LinearLayout>
 </layout>

src/quick/res/layout/activity_verify.xml

@@ -10,10 +10,17 @@
         <include
             android:id="@+id/toolbar"
             layout="@layout/toolbar" />
+
+        <android.support.design.widget.CoordinatorLayout
+            android:id="@+id/coordinator"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
             <ScrollView
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
                 android:fillViewport="true">
+
                 <RelativeLayout
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content">
@@ -48,116 +55,130 @@
                         android:layout_height="wrap_content"
                         android:layout_below="@+id/instructions"
                         android:layout_centerHorizontal="true">
+
                         <EditText
                             android:layout_width="35sp"
                             android:layout_height="wrap_content"
                             android:digits="1234567890"
+                            android:gravity="center"
+                            android:imeOptions="flagNoExtractUi"
                             android:inputType="number"
                             android:maxLength="1"
-                    android:textSize="40sp"
-                    android:gravity="center"
                             android:textIsSelectable="false"
-                    />
+                            android:textSize="40sp" />
+
                         <Space
                             android:layout_width="0dp"
                             android:layout_height="0dp"
                             android:layout_weight="1" />
+
                         <EditText
                             android:layout_width="35sp"
                             android:layout_height="wrap_content"
                             android:digits="1234567890"
+                            android:gravity="center"
+                            android:imeOptions="flagNoExtractUi"
                             android:inputType="number"
                             android:maxLength="1"
-                    android:textSize="40sp"
-                    android:gravity="center"
                             android:textIsSelectable="false"
-                    />
+                            android:textSize="40sp" />
+
                         <Space
                             android:layout_width="0dp"
                             android:layout_height="0dp"
                             android:layout_weight="1" />
+
                         <EditText
                             android:layout_width="35sp"
                             android:layout_height="wrap_content"
                             android:digits="1234567890"
+                            android:gravity="center"
+                            android:imeOptions="flagNoExtractUi"
                             android:inputType="number"
                             android:maxLength="1"
-                    android:textSize="40sp"
-                    android:gravity="center"
                             android:textIsSelectable="false"
-                    />
+                            android:textSize="40sp" />
+
                         <Space
                             android:layout_width="0dp"
                             android:layout_height="0dp"
                             android:layout_weight="1" />
+
                         <EditText
                             android:layout_width="35sp"
                             android:layout_height="wrap_content"
                             android:digits="1234567890"
+                            android:gravity="center"
+                            android:imeOptions="flagNoExtractUi"
                             android:inputType="number"
                             android:maxLength="1"
-                    android:textSize="40sp"
-                    android:gravity="center"
                             android:textIsSelectable="false"
-                    />
+                            android:textSize="40sp" />
+
                         <Space
                             android:layout_width="0dp"
                             android:layout_height="0dp"
                             android:layout_weight="1" />
+
                         <EditText
                             android:layout_width="35sp"
                             android:layout_height="wrap_content"
                             android:digits="1234567890"
+                            android:gravity="center"
+                            android:imeOptions="flagNoExtractUi"
                             android:inputType="number"
                             android:maxLength="1"
-                    android:textSize="40sp"
-                    android:gravity="center"
                             android:textIsSelectable="false"
-                    />
+                            android:textSize="40sp" />
+
                         <Space
                             android:layout_width="0dp"
                             android:layout_height="0dp"
                             android:layout_weight="1" />
+
                         <EditText
                             android:layout_width="35sp"
                             android:layout_height="wrap_content"
                             android:digits="1234567890"
+                            android:gravity="center"
+                            android:imeOptions="flagNoExtractUi"
                             android:inputType="number"
                             android:maxLength="1"
-                    android:textSize="40sp"
-                    android:gravity="center"
                             android:textIsSelectable="false"
-                    />
+                            android:textSize="40sp" />
                     </LinearLayout>
+
                     <Button
                         android:id="@+id/next"
-                android:layout_alignParentBottom="true"
-                android:layout_alignParentEnd="true"
                         style="@style/Widget.Conversations.Button.Borderless"
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
+                        android:layout_alignParentEnd="true"
+                        android:layout_alignParentBottom="true"
                         android:text="@string/next"
                         android:textColor="?colorAccent" />
 
                     <Button
                         android:id="@+id/back"
-                android:layout_alignParentBottom="true"
-                android:layout_alignParentStart="true"
                         style="@style/Widget.Conversations.Button.Borderless"
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
+                        android:layout_alignParentStart="true"
+                        android:layout_alignParentBottom="true"
                         android:text="@string/back"
                         android:textColor="?android:textColorSecondary" />
+
                     <Button
-                    android:layout_centerHorizontal="true"
-                    android:layout_below="@+id/pin_box"
                         android:id="@+id/resend_sms"
                         style="@style/Widget.Conversations.Button.Borderless"
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
+                        android:layout_below="@+id/pin_box"
+                        android:layout_centerHorizontal="true"
                         android:text="@string/resend_sms"
                         android:textColor="?android:textColorSecondary" />
                 </RelativeLayout>
             </ScrollView>
+        </android.support.design.widget.CoordinatorLayout>
     </LinearLayout>
 </layout>