Add toast notification when copying from clipboard (#752)

and use the toast for showing dictionary on double-long-press word: switch from one ugly workaround (popup menu) to another (hiding more suggestions panel)

Co-authored-by: codokie <@>
Co-authored-by: Helium314 <helium314@mailbox.org>

app/src/main/java/helium314/keyboard/keyboard/KeyboardSwitcher.java

@@ -10,14 +10,19 @@ import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.Resources;
-import helium314.keyboard.latin.utils.Log;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
 import android.view.ContextThemeWrapper;
+import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.View;
+import android.view.animation.AnimationUtils;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputMethodSubtype;
 import android.widget.HorizontalScrollView;
 import android.widget.LinearLayout;
+import android.widget.TextView;
+import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 
@@ -36,6 +41,7 @@ import helium314.keyboard.latin.settings.Settings;
 import helium314.keyboard.latin.settings.SettingsValues;
 import helium314.keyboard.latin.utils.CapsModeUtils;
 import helium314.keyboard.latin.utils.LanguageOnSpacebarUtils;
+import helium314.keyboard.latin.utils.Log;
 import helium314.keyboard.latin.utils.RecapitalizeStatus;
 import helium314.keyboard.latin.utils.ResourceUtils;
 import helium314.keyboard.latin.utils.ScriptUtils;
@@ -53,6 +59,7 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
     private HorizontalScrollView mClipboardStripScrollView;
     private View mSuggestionStripView;
     private ClipboardHistoryView mClipboardHistoryView;
+    private TextView mFakeToastView;
     private LatinIME mLatinIME;
     private RichInputMethodManager mRichImm;
     private boolean mIsHardwareAcceleratedDrawingEnabled;
@@ -467,6 +474,46 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
         Settings.getInstance().writeOneHandedModeGravity(mKeyboardViewWrapper.getOneHandedGravity());
     }
 
+    /**
+     * Displays a toast message.
+     *
+     * @param text The text to display in the toast message.
+     * @param briefToast If true, the toast duration will be short; otherwise, it will last longer.
+     */
+    public void showToast(final String text, final boolean briefToast){
+        // In API 32 and below, toasts can be shown without a notification permission.
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.S_V2) {
+            final int toastLength = briefToast ? Toast.LENGTH_SHORT : Toast.LENGTH_LONG;
+            final Toast toast = Toast.makeText(mLatinIME, text, toastLength);
+            toast.setGravity(Gravity.CENTER, 0, 0);
+            toast.show();
+        } else {
+            final int toastLength = briefToast ? 2000 : 3500;
+            showFakeToast(text, toastLength);
+        }
+    }
+
+    // Displays a toast-like message with the provided text for a specified duration.
+    public void showFakeToast(final String text, final int timeMillis) {
+        if (mFakeToastView.getVisibility() == View.VISIBLE) return;
+
+        final Drawable appIcon = mFakeToastView.getCompoundDrawables()[0];
+        if (appIcon != null) {
+            final int bound = mFakeToastView.getLineHeight();
+            appIcon.setBounds(0, 0, bound, bound);
+            mFakeToastView.setCompoundDrawables(appIcon, null, null, null);
+        }
+        mFakeToastView.setText(text);
+        mFakeToastView.setVisibility(View.VISIBLE);
+        mFakeToastView.bringToFront();
+        mFakeToastView.startAnimation(AnimationUtils.loadAnimation(mLatinIME, R.anim.fade_in));
+
+        mFakeToastView.postDelayed(() -> {
+            mFakeToastView.startAnimation(AnimationUtils.loadAnimation(mLatinIME, R.anim.fade_out));
+            mFakeToastView.setVisibility(View.GONE);
+        }, timeMillis);
+    }
+
     // Implements {@link KeyboardState.SwitchActions}.
     @Override
     public boolean isInDoubleTapShiftKeyTimeout() {
@@ -562,6 +609,7 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
         mMainKeyboardFrame = mCurrentInputView.findViewById(R.id.main_keyboard_frame);
         mEmojiPalettesView = mCurrentInputView.findViewById(R.id.emoji_palettes_view);
         mClipboardHistoryView = mCurrentInputView.findViewById(R.id.clipboard_history_view);
+        mFakeToastView = mCurrentInputView.findViewById(R.id.fakeToast);
 
         mKeyboardViewWrapper = mCurrentInputView.findViewById(R.id.keyboard_view_wrapper);
         mKeyboardViewWrapper.setKeyboardActionListener(mLatinIME.mKeyboardActionListener);

app/src/main/java/helium314/keyboard/latin/RichInputConnection.java

@@ -10,11 +10,14 @@ import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
 import android.inputmethodservice.InputMethodService;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.SystemClock;
 import android.text.SpannableStringBuilder;
 import android.text.TextUtils;
 import android.text.style.CharacterStyle;
+
+import helium314.keyboard.keyboard.KeyboardSwitcher;
 import helium314.keyboard.latin.utils.Log;
 import android.view.KeyEvent;
 import android.view.inputmethod.CompletionInfo;
@@ -671,6 +674,9 @@ public final class RichInputConnection implements PrivateCommandPerformer {
         if (text == null || text.length() == 0) return;
         final ClipboardManager cm = (ClipboardManager) mParent.getSystemService(Context.CLIPBOARD_SERVICE);
         cm.setPrimaryClip(ClipData.newPlainText("copied text", text));
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.S_V2) {
+            KeyboardSwitcher.getInstance().showToast(mParent.getString(R.string.toast_msg_clipboard_copy), true);
+        }
     }
 
     public void commitCorrection(final CorrectionInfo correctionInfo) {

app/src/main/java/helium314/keyboard/latin/suggestions/SuggestionStripView.java

@@ -41,6 +41,7 @@ import android.widget.TextView;
 
 import helium314.keyboard.accessibility.AccessibilityUtils;
 import helium314.keyboard.keyboard.Keyboard;
+import helium314.keyboard.keyboard.KeyboardSwitcher;
 import helium314.keyboard.keyboard.MainKeyboardView;
 import helium314.keyboard.keyboard.PopupKeysPanel;
 import helium314.keyboard.keyboard.internal.keyboard_parser.floris.KeyCode;
@@ -445,12 +446,10 @@ public final class SuggestionStripView extends RelativeLayout implements OnClick
         final SuggestedWordInfo info = mSuggestedWords.getInfo(index);
         if (!info.getWord().equals(word)) return;
         final String text = info.mSourceDict.mDictType + ":" + info.mSourceDict.mLocale;
-        // apparently toast is not working on some Android versions, probably
-        // Android 13 with the notification permission
-        // Toast.makeText(getContext(), text, Toast.LENGTH_LONG).show();
-        final PopupMenu uglyWorkaround = new PopupMenu(DialogUtilsKt.getPlatformDialogThemeContext(getContext()), wordView);
-        uglyWorkaround.getMenu().add(Menu.NONE, 1, Menu.NONE, text);
-        uglyWorkaround.show();
+        if (isShowingMoreSuggestionPanel()) {
+            mMoreSuggestionsView.dismissPopupKeysPanel();
+        }
+        KeyboardSwitcher.getInstance().showToast(text, true);
     }
 
     private void removeSuggestion(TextView wordView) {

app/src/main/res/anim/fade_in.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<alpha xmlns:android="http://schemas.android.com/apk/res/android"
+    android:fromAlpha="0.0"
+    android:toAlpha="1.0"
+    android:duration="150" />

app/src/main/res/anim/fade_out.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<alpha xmlns:android="http://schemas.android.com/apk/res/android"
+    android:fromAlpha="1.0"
+    android:toAlpha="0.0"
+    android:duration="150" />

app/src/main/res/drawable/toast_background.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="@color/toast_background" />
+    <corners android:radius="24dp" />
+</shape>

app/src/main/res/layout/fake_toast.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    SPDX-License-Identifier: GPL-3.0-only
+-->
+<TextView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:layout_gravity="center"
+    android:layout_marginHorizontal="16dp"
+    android:paddingHorizontal="16dp"
+    android:paddingVertical="8dp"
+    android:drawablePadding="12dp"
+    android:drawableStart="@mipmap/ic_launcher_round"
+    android:background="@drawable/toast_background"
+    android:textColor="@android:color/white"
+    android:textAppearance="?android:textAppearanceMedium"
+    android:visibility="gone" />

app/src/main/res/layout/input_view.xml

@@ -10,6 +10,9 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     style="?attr/inputViewStyle">
+    <include
+        android:id="@+id/fakeToast"
+        layout="@layout/fake_toast" />
     <include
         android:id="@+id/main_keyboard_frame"
         layout="@layout/main_keyboard_frame" />

app/src/main/res/values-night/colors.xml

@@ -6,6 +6,7 @@
     <color name="foreground">#FFF</color>
     <color name="foreground_weak">#BBB</color>
     <color name="almost_background">#666</color>
+    <color name="toast_background">#444444</color>
 
     <color name="keyboard_background">@color/keyboard_background_dark</color>
 

app/src/main/res/values/colors.xml

@@ -68,6 +68,7 @@
     <color name="foreground">#000</color>
     <color name="foreground_weak">#555</color>
     <color name="almost_background">#AAA</color>
+    <color name="toast_background">#666666</color>
     <color name="highlight_color_lxx_light">#1A73E8</color> <!-- todo: remove / replace with accent? -->
     <color name="keyboard_background">@color/keyboard_background_light</color>
 

app/src/main/res/values/strings.xml

@@ -830,4 +830,6 @@ New dictionary:
     <string name="var_toolbar_direction">Variable toolbar direction</string>
     <!-- Description of the variable toolbar direction setting -->
     <string name="var_toolbar_direction_summary">Reverse direction when a right-to-left keyboard subtype is selected</string>
+    <!-- Toast message shown when content is copied to the clipboard -->
+    <string name="toast_msg_clipboard_copy">Content copied</string>
 </resources>