Implemented clipboard history feature

app/build.gradle

@@ -43,6 +43,7 @@ android {
 dependencies {
     implementation 'com.google.code.findbugs:jsr305:3.0.2'
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation 'androidx.recyclerview:recyclerview:1.2.1' // Replaces recyclerview:1.0.0 included by above dependency
     implementation 'androidx.core:core-ktx:1.5.0'
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     implementation 'androidx.viewpager2:viewpager2:1.0.0'

app/src/main/java/org/dslul/openboard/inputmethod/compat/ClipboardManagerCompat.java

@@ -0,0 +1,19 @@
+package org.dslul.openboard.inputmethod.compat;
+
+import android.annotation.TargetApi;
+import android.content.ClipData;
+import android.content.ClipboardManager;
+import android.os.Build;
+
+public class ClipboardManagerCompat {
+
+    @TargetApi(Build.VERSION_CODES.P)
+    public static void clearPrimaryClip(ClipboardManager cm) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+            cm.clearPrimaryClip();
+        } else {
+            cm.setPrimaryClip(ClipData.newPlainText("", ""));
+        }
+    }
+
+}

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/KeyboardId.java

@@ -70,6 +70,7 @@ public final class KeyboardId {
     public static final int ELEMENT_EMOJI_CATEGORY14 = 24;
     public static final int ELEMENT_EMOJI_CATEGORY15 = 25;
     public static final int ELEMENT_EMOJI_CATEGORY16 = 26;
+    public static final int ELEMENT_CLIPBOARD = 27;
 
     public final RichInputMethodSubtype mSubtype;
     public final int mWidth;
@@ -255,6 +256,7 @@ public final class KeyboardId {
         case ELEMENT_EMOJI_CATEGORY14: return "emojiCategory14";
         case ELEMENT_EMOJI_CATEGORY15: return "emojiCategory15";
         case ELEMENT_EMOJI_CATEGORY16: return "emojiCategory16";
+        case ELEMENT_CLIPBOARD: return "clipboard";
         default: return null;
         }
     }

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/KeyboardSwitcher.java

@@ -27,6 +27,7 @@ import android.view.inputmethod.EditorInfo;
 
 import org.dslul.openboard.inputmethod.event.Event;
 import org.dslul.openboard.inputmethod.keyboard.KeyboardLayoutSet.KeyboardLayoutSetException;
+import org.dslul.openboard.inputmethod.keyboard.clipboard.ClipboardHistoryView;
 import org.dslul.openboard.inputmethod.keyboard.emoji.EmojiPalettesView;
 import org.dslul.openboard.inputmethod.keyboard.internal.KeyboardState;
 import org.dslul.openboard.inputmethod.keyboard.internal.KeyboardTextsSet;
@@ -53,6 +54,7 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
     private View mMainKeyboardFrame;
     private MainKeyboardView mKeyboardView;
     private EmojiPalettesView mEmojiPalettesView;
+    private ClipboardHistoryView mClipboardHistoryView;
     private LatinIME mLatinIME;
     private RichInputMethodManager mRichImm;
     private boolean mIsHardwareAcceleratedDrawingEnabled;
@@ -135,7 +137,7 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
     }
 
     public void saveKeyboardState() {
-        if (getKeyboard() != null || isShowingEmojiPalettes()) {
+        if (getKeyboard() != null || isShowingEmojiPalettes() || isShowingClipboardHistory()) {
             mState.onSaveKeyboardState();
         }
     }
@@ -288,6 +290,8 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
         mMainKeyboardFrame.setVisibility(visibility);
         mEmojiPalettesView.setVisibility(View.GONE);
         mEmojiPalettesView.stopEmojiPalettes();
+        mClipboardHistoryView.setVisibility(View.GONE);
+        mClipboardHistoryView.stopClipboardHistory();
     }
 
     // Implements {@link KeyboardState.SwitchActions}.
@@ -308,10 +312,30 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
         mEmojiPalettesView.setVisibility(View.VISIBLE);
     }
 
+    // Implements {@link KeyboardState.SwitchActions}.
+    @Override
+    public void setClipboardKeyboard() {
+        if (DEBUG_ACTION) {
+            Log.d(TAG, "setClipboardKeyboard");
+        }
+        final Keyboard keyboard = mKeyboardLayoutSet.getKeyboard(KeyboardId.ELEMENT_ALPHABET);
+        mMainKeyboardFrame.setVisibility(View.GONE);
+        // The visibility of {@link #mKeyboardView} must be aligned with {@link #MainKeyboardFrame}.
+        // @see #getVisibleKeyboardView() and
+        // @see LatinIME#onComputeInset(android.inputmethodservice.InputMethodService.Insets)
+        mKeyboardView.setVisibility(View.GONE);
+        mClipboardHistoryView.startClipboardHistory(
+                mLatinIME.getClipboardHistoryManager(),
+                mKeyboardTextsSet.getText(KeyboardTextsSet.SWITCH_TO_ALPHA_KEY_LABEL),
+                mKeyboardView.getKeyVisualAttribute(), keyboard.mIconsSet);
+        mClipboardHistoryView.setVisibility(View.VISIBLE);
+    }
+
     public enum KeyboardSwitchState {
         HIDDEN(-1),
         SYMBOLS_SHIFTED(KeyboardId.ELEMENT_SYMBOLS_SHIFTED),
         EMOJI(KeyboardId.ELEMENT_EMOJI_RECENTS),
+        CLIPBOARD(KeyboardId.ELEMENT_CLIPBOARD),
         OTHER(-1);
 
         final int mKeyboardId;
@@ -322,15 +346,16 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
     }
 
     public KeyboardSwitchState getKeyboardSwitchState() {
-        boolean hidden = !isShowingEmojiPalettes()
+        boolean hidden = !isShowingEmojiPalettes() && !isShowingClipboardHistory()
                 && (mKeyboardLayoutSet == null
                 || mKeyboardView == null
                 || !mKeyboardView.isShown());
-        KeyboardSwitchState state;
         if (hidden) {
             return KeyboardSwitchState.HIDDEN;
         } else if (isShowingEmojiPalettes()) {
             return KeyboardSwitchState.EMOJI;
+        } else if (isShowingClipboardHistory()) {
+            return KeyboardSwitchState.CLIPBOARD;
         } else if (isShowingKeyboardId(KeyboardId.ELEMENT_SYMBOLS_SHIFTED)) {
             return KeyboardSwitchState.SYMBOLS_SHIFTED;
         }
@@ -348,10 +373,15 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
             mLatinIME.startShowingInputView(true);
             if (toggleState == KeyboardSwitchState.EMOJI) {
                 setEmojiKeyboard();
+            } else if (toggleState == KeyboardSwitchState.CLIPBOARD) {
+                setClipboardKeyboard();
             } else {
                 mEmojiPalettesView.stopEmojiPalettes();
                 mEmojiPalettesView.setVisibility(View.GONE);
 
+                mClipboardHistoryView.stopClipboardHistory();
+                mClipboardHistoryView.setVisibility(View.GONE);
+
                 mMainKeyboardFrame.setVisibility(View.VISIBLE);
                 mKeyboardView.setVisibility(View.VISIBLE);
                 setKeyboard(toggleState.mKeyboardId, toggleState);
@@ -429,8 +459,12 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
         return mEmojiPalettesView != null && mEmojiPalettesView.isShown();
     }
 
+    public boolean isShowingClipboardHistory() {
+        return mClipboardHistoryView != null && mClipboardHistoryView.isShown();
+    }
+
     public boolean isShowingMoreKeysPanel() {
-        if (isShowingEmojiPalettes()) {
+        if (isShowingEmojiPalettes() || isShowingClipboardHistory()) {
             return false;
         }
         return mKeyboardView.isShowingMoreKeysPanel();
@@ -439,6 +473,8 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
     public View getVisibleKeyboardView() {
         if (isShowingEmojiPalettes()) {
             return mEmojiPalettesView;
+        } else if (isShowingClipboardHistory()) {
+            return mClipboardHistoryView;
         }
         return mKeyboardView;
     }
@@ -455,6 +491,9 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
         if (mEmojiPalettesView != null) {
             mEmojiPalettesView.stopEmojiPalettes();
         }
+        if (mClipboardHistoryView != null) {
+            mClipboardHistoryView.stopClipboardHistory();
+        }
     }
 
     public View onCreateInputView(final boolean isHardwareAcceleratedDrawingEnabled) {
@@ -467,8 +506,8 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
         mCurrentInputView = (InputView)LayoutInflater.from(mThemeContext).inflate(
                 R.layout.input_view, null);
         mMainKeyboardFrame = mCurrentInputView.findViewById(R.id.main_keyboard_frame);
-        mEmojiPalettesView = mCurrentInputView.findViewById(
-                R.id.emoji_palettes_view);
+        mEmojiPalettesView = mCurrentInputView.findViewById(R.id.emoji_palettes_view);
+        mClipboardHistoryView = mCurrentInputView.findViewById(R.id.clipboard_history_view);
 
         mKeyboardView = mCurrentInputView.findViewById(R.id.keyboard_view);
         mKeyboardView.setHardwareAcceleratedDrawingEnabled(isHardwareAcceleratedDrawingEnabled);
@@ -476,6 +515,9 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
         mEmojiPalettesView.setHardwareAcceleratedDrawingEnabled(
                 isHardwareAcceleratedDrawingEnabled);
         mEmojiPalettesView.setKeyboardActionListener(mLatinIME);
+        mClipboardHistoryView.setHardwareAcceleratedDrawingEnabled(
+                isHardwareAcceleratedDrawingEnabled);
+        mClipboardHistoryView.setKeyboardActionListener(mLatinIME);
         return mCurrentInputView;
     }
 

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/clipboard/ClipboardAdapter.kt

@@ -0,0 +1,93 @@
+package org.dslul.openboard.inputmethod.keyboard.clipboard
+
+import android.graphics.Typeface
+import android.util.TypedValue
+import android.view.LayoutInflater
+import android.view.MotionEvent
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import org.dslul.openboard.inputmethod.latin.ClipboardHistoryEntry
+import org.dslul.openboard.inputmethod.latin.ClipboardHistoryManager
+import org.dslul.openboard.inputmethod.latin.R
+
+class ClipboardAdapter(
+       val clipboardLayoutParams: ClipboardLayoutParams,
+       val keyEventListener: OnKeyEventListener
+) : RecyclerView.Adapter<ClipboardAdapter.ViewHolder>() {
+
+    var clipboardHistoryManager: ClipboardHistoryManager? = null
+
+    var pinnedIconResId = 0
+    var itemBackgroundId = 0
+    var itemTypeFace: Typeface? = null
+    var itemTextColor = 0
+    var itemTextSize = 0f
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val view = LayoutInflater.from(parent.context)
+                .inflate(R.layout.clipboard_entry_key, parent, false)
+        return ViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        holder.setContent(getItem(position))
+    }
+
+    private fun getItem(position: Int) = clipboardHistoryManager?.getHistoryEntry(position)
+
+    override fun getItemCount() = clipboardHistoryManager?.getHistorySize() ?: 0
+
+    inner class ViewHolder(
+            view: View
+    ) : RecyclerView.ViewHolder(view), View.OnClickListener, View.OnTouchListener, View.OnLongClickListener {
+
+        private val pinnedIconView: ImageView
+        private val contentView: TextView
+
+        init {
+            view.apply {
+                setOnClickListener(this@ViewHolder)
+                setOnTouchListener(this@ViewHolder)
+                setOnLongClickListener(this@ViewHolder)
+                setBackgroundResource(itemBackgroundId)
+            }
+            pinnedIconView = view.findViewById<ImageView>(R.id.clipboard_entry_pinned_icon).apply {
+                visibility = View.GONE
+                setImageResource(pinnedIconResId)
+            }
+            contentView = view.findViewById<TextView>(R.id.clipboard_entry_content).apply {
+                typeface = itemTypeFace
+                setTextColor(itemTextColor)
+                setTextSize(TypedValue.COMPLEX_UNIT_PX, itemTextSize)
+            }
+            clipboardLayoutParams.setItemProperties(view)
+        }
+
+        fun setContent(historyEntry: ClipboardHistoryEntry?) {
+            itemView.tag = historyEntry?.id
+            contentView.text = historyEntry?.content
+            pinnedIconView.visibility = if (historyEntry?.isPinned == true) View.VISIBLE else View.GONE
+        }
+
+        override fun onTouch(view: View, event: MotionEvent): Boolean {
+            if (event.actionMasked != MotionEvent.ACTION_DOWN) {
+                return false
+            }
+            keyEventListener.onKeyDown(view.tag as Long)
+            return false
+        }
+
+        override fun onClick(view: View) {
+            keyEventListener.onKeyUp(view.tag as Long)
+        }
+
+        override fun onLongClick(view: View): Boolean {
+            clipboardHistoryManager?.toggleClipPinned(view.tag as Long)
+            return true
+        }
+    }
+
+}

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/clipboard/ClipboardHistoryRecyclerView.kt

@@ -0,0 +1,78 @@
+package org.dslul.openboard.inputmethod.keyboard.clipboard
+
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Paint
+import android.util.AttributeSet
+import android.view.View
+import androidx.recyclerview.widget.RecyclerView
+
+class ClipboardHistoryRecyclerView @JvmOverloads constructor(
+        context: Context,
+        attrs: AttributeSet? = null,
+        defStyleAttr: Int = 0
+) : RecyclerView(context, attrs, defStyleAttr) {
+
+    var placeholderView: View? = null
+
+    private val adapterDataObserver: AdapterDataObserver = object : AdapterDataObserver() {
+
+        override fun onChanged() {
+            checkAdapterContentChange()
+        }
+
+        override fun onItemRangeChanged(positionStart: Int, itemCount: Int) {
+            checkAdapterContentChange()
+        }
+
+
+        override fun onItemRangeInserted(positionStart: Int, itemCount: Int) {
+            checkAdapterContentChange()
+        }
+
+        override fun onItemRangeRemoved(positionStart: Int, itemCount: Int) {
+            checkAdapterContentChange()
+        }
+
+    }
+
+    private fun checkAdapterContentChange() {
+        if (placeholderView == null) return
+        val adapterIsEmpty = adapter == null || adapter?.itemCount == 0
+        if (this@ClipboardHistoryRecyclerView.visibility == VISIBLE && adapterIsEmpty) {
+            placeholderView!!.visibility = VISIBLE
+            this@ClipboardHistoryRecyclerView.visibility = INVISIBLE
+        } else if (this@ClipboardHistoryRecyclerView.visibility == INVISIBLE && !adapterIsEmpty) {
+            placeholderView!!.visibility = INVISIBLE
+            this@ClipboardHistoryRecyclerView.visibility = VISIBLE
+        }
+    }
+
+    override fun setAdapter(adapter: Adapter<*>?) {
+        this.adapter?.unregisterAdapterDataObserver(adapterDataObserver)
+        super.setAdapter(adapter)
+        checkAdapterContentChange()
+        adapter?.registerAdapterDataObserver(adapterDataObserver)
+    }
+
+    class BottomDividerItemDecoration(dividerHeight: Int, dividerColor: Int) : RecyclerView.ItemDecoration() {
+
+        private val paint = Paint()
+
+        init {
+            paint.color = dividerColor
+            paint.strokeWidth = dividerHeight.toFloat()
+        }
+
+        override fun onDrawOver(canvas: Canvas, parent: RecyclerView, state: State) {
+            super.onDrawOver(canvas, parent, state)
+            canvas.drawLine(parent.paddingLeft.toFloat(),
+                    parent.height - paint.strokeWidth / 2,
+                    parent.width.toFloat() - parent.paddingRight.toFloat(),
+                    parent.height - paint.strokeWidth / 2 ,
+                    paint
+            )
+        }
+
+    }
+}

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/clipboard/ClipboardHistoryView.kt

@@ -0,0 +1,226 @@
+package org.dslul.openboard.inputmethod.keyboard.clipboard
+
+import android.content.Context
+import android.util.AttributeSet
+import android.util.TypedValue
+import android.view.MotionEvent
+import android.view.View
+import android.widget.FrameLayout
+import android.widget.ImageButton
+import android.widget.LinearLayout
+import android.widget.TextView
+import androidx.recyclerview.widget.StaggeredGridLayoutManager
+import org.dslul.openboard.inputmethod.keyboard.KeyboardActionListener
+import org.dslul.openboard.inputmethod.keyboard.internal.KeyDrawParams
+import org.dslul.openboard.inputmethod.keyboard.internal.KeyVisualAttributes
+import org.dslul.openboard.inputmethod.keyboard.internal.KeyboardIconsSet
+import org.dslul.openboard.inputmethod.latin.ClipboardHistoryManager
+import org.dslul.openboard.inputmethod.latin.R
+import org.dslul.openboard.inputmethod.latin.common.Constants
+import org.dslul.openboard.inputmethod.latin.utils.ResourceUtils
+
+class ClipboardHistoryView @JvmOverloads constructor(
+        context: Context,
+        attrs: AttributeSet?,
+        defStyle: Int = R.attr.clipboardHistoryViewStyle
+) : LinearLayout(context, attrs, defStyle), View.OnTouchListener, View.OnClickListener,
+        ClipboardHistoryManager.OnHistoryChangeListener, OnKeyEventListener {
+
+    private val clipboardLayoutParams = ClipboardLayoutParams(context.resources)
+    private val pinIconId: Int
+    private val dividerColor: Int
+    private val functionalKeyBackgroundId: Int
+    private val keyBackgroundId: Int
+
+    private lateinit var clipboardRecyclerView: ClipboardHistoryRecyclerView
+    private lateinit var placeholderView: TextView
+    private lateinit var alphabetKey: TextView
+    private lateinit var clearKey: ImageButton
+    private lateinit var clipboardAdapter: ClipboardAdapter
+
+    var keyboardActionListener: KeyboardActionListener? = null
+    var clipboardHistoryManager: ClipboardHistoryManager? = null
+
+    init {
+        val clipboardViewAttr = context.obtainStyledAttributes(attrs,
+                R.styleable.ClipboardHistoryView, defStyle, R.style.ClipboardHistoryView)
+        pinIconId = clipboardViewAttr.getResourceId(
+                R.styleable.ClipboardHistoryView_iconPinnedClip, 0)
+        dividerColor = clipboardViewAttr.getColor(
+                R.styleable.ClipboardHistoryView_dividerBackground, 0)
+        clipboardViewAttr.recycle()
+        val keyboardViewAttr = context.obtainStyledAttributes(attrs,
+                R.styleable.KeyboardView, defStyle, R.style.KeyboardView)
+        keyBackgroundId = keyboardViewAttr.getResourceId(
+                R.styleable.KeyboardView_keyBackground, 0)
+        functionalKeyBackgroundId = keyboardViewAttr.getResourceId(
+                R.styleable.KeyboardView_functionalKeyBackground, keyBackgroundId)
+        keyboardViewAttr.recycle()
+    }
+
+    override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec)
+        val res = context.resources
+        // The main keyboard expands to the entire this {@link KeyboardView}.
+        val width = (ResourceUtils.getDefaultKeyboardWidth(res)
+                + paddingLeft + paddingRight)
+        val height = (ResourceUtils.getDefaultKeyboardHeight(res)
+                + res.getDimensionPixelSize(R.dimen.config_suggestions_strip_height)
+                + paddingTop + paddingBottom)
+        setMeasuredDimension(width, height)
+    }
+
+    override fun onFinishInflate() {
+        super.onFinishInflate()
+        clipboardAdapter = ClipboardAdapter(clipboardLayoutParams, this).apply {
+            itemBackgroundId = keyBackgroundId
+            pinnedIconResId = pinIconId
+        }
+        placeholderView = findViewById(R.id.clipboard_empty_view)
+        clipboardRecyclerView = findViewById<ClipboardHistoryRecyclerView>(R.id.clipboard_list).apply {
+            val colCount = resources.getInteger(R.integer.config_clipboard_keyboard_col_count)
+            layoutManager = StaggeredGridLayoutManager(colCount, StaggeredGridLayoutManager.VERTICAL)
+            val dividerHeight = resources.getDimensionPixelSize(R.dimen.config_clipboard_divider_height)
+            addItemDecoration(ClipboardHistoryRecyclerView.BottomDividerItemDecoration(dividerHeight, dividerColor))
+            persistentDrawingCache = PERSISTENT_NO_CACHE
+            clipboardLayoutParams.setListProperties(this)
+            placeholderView = this@ClipboardHistoryView.placeholderView
+        }
+        findViewById<FrameLayout>(R.id.clipboard_action_bar)?.apply {
+            clipboardLayoutParams.setActionBarProperties(this)
+        }
+        alphabetKey = findViewById<TextView>(R.id.clipboard_keyboard_alphabet).apply {
+            tag = Constants.CODE_ALPHA_FROM_CLIPBOARD
+            setBackgroundResource(functionalKeyBackgroundId)
+            setOnTouchListener(this@ClipboardHistoryView)
+            setOnClickListener(this@ClipboardHistoryView)
+        }
+        clearKey = findViewById<ImageButton>(R.id.clipboard_clear).apply {
+            setOnTouchListener(this@ClipboardHistoryView)
+            setOnClickListener(this@ClipboardHistoryView)
+        }
+    }
+
+    private fun setupAlphabetKey(key: TextView?, label: String, params: KeyDrawParams) {
+        key?.apply {
+            text = label
+            typeface = params.mTypeface
+            setTextColor(params.mFunctionalTextColor)
+            setTextSize(TypedValue.COMPLEX_UNIT_PX, params.mLabelSize.toFloat())
+        }
+    }
+
+    private fun setupClipKey(params: KeyDrawParams) {
+        clipboardAdapter.apply {
+            itemBackgroundId = keyBackgroundId
+            itemTypeFace = params.mTypeface
+            itemTextColor = params.mTextColor
+            itemTextSize = params.mLabelSize.toFloat()
+        }
+    }
+
+    private fun setupClearKey(iconSet: KeyboardIconsSet) {
+        val resId = iconSet.getIconResourceId(KeyboardIconsSet.NAME_CLEAR_CLIPBOARD_KEY)
+        clearKey.setImageResource(resId)
+    }
+
+    fun setHardwareAcceleratedDrawingEnabled(enabled: Boolean) {
+        if (!enabled) return
+        // TODO: Should use LAYER_TYPE_SOFTWARE when hardware acceleration is off?
+        setLayerType(LAYER_TYPE_HARDWARE, null)
+    }
+
+    fun startClipboardHistory(
+            historyManager: ClipboardHistoryManager,
+            switchToAlphaLabel: String,
+            keyVisualAttr: KeyVisualAttributes?,
+            iconSet: KeyboardIconsSet
+    ) {
+        historyManager.setHistoryChangeListener(this)
+        clipboardHistoryManager = historyManager
+        clipboardAdapter.clipboardHistoryManager = historyManager
+
+        val params = KeyDrawParams()
+        params.updateParams(clipboardLayoutParams.actionBarContentHeight, keyVisualAttr)
+        setupAlphabetKey(alphabetKey, switchToAlphaLabel, params)
+        setupClipKey(params)
+        setupClearKey(iconSet)
+
+        placeholderView.apply {
+            typeface = params.mTypeface
+            setTextColor(params.mTextColor)
+            setTextSize(TypedValue.COMPLEX_UNIT_PX, params.mLabelSize.toFloat() * 2)
+        }
+        clipboardRecyclerView.apply {
+            adapter = clipboardAdapter
+        }
+    }
+
+    fun stopClipboardHistory() {
+        clipboardRecyclerView.adapter = null
+        clipboardHistoryManager?.setHistoryChangeListener(null)
+        clipboardHistoryManager = null
+        clipboardAdapter.clipboardHistoryManager = null
+    }
+
+    override fun onTouch(view: View, event: MotionEvent): Boolean {
+        if (event.actionMasked != MotionEvent.ACTION_DOWN) {
+            return false
+        }
+        when (view) {
+            alphabetKey -> keyboardActionListener?.onPressKey(
+                    Constants.CODE_ALPHA_FROM_CLIPBOARD, 0 /* repeatCount */,
+                    true /* isSinglePointer */)
+            clearKey -> keyboardActionListener?.onPressKey(
+                    Constants.CODE_UNSPECIFIED, 0 /* repeatCount */,
+                    true /* isSinglePointer */)
+        }
+        // It's important to return false here. Otherwise, {@link #onClick} and touch-down visual
+        // feedback stop working.
+        return false
+    }
+
+    override fun onClick(view: View) {
+        when (view) {
+            alphabetKey -> {
+                keyboardActionListener?.onCodeInput(Constants.CODE_ALPHA_FROM_CLIPBOARD,
+                        Constants.NOT_A_COORDINATE, Constants.NOT_A_COORDINATE,
+                        false /* isKeyRepeat */)
+                keyboardActionListener?.onReleaseKey(Constants.CODE_ALPHA_FROM_CLIPBOARD,
+                        false /* withSliding */)
+            }
+            clearKey -> {
+                clipboardHistoryManager?.clearHistory()
+                keyboardActionListener?.onReleaseKey(Constants.CODE_UNSPECIFIED,
+                        false /* withSliding */)
+            }
+        }
+    }
+
+    override fun onKeyDown(clipId: Long) {
+        keyboardActionListener?.onPressKey(Constants.CODE_UNSPECIFIED, 0 /* repeatCount */,
+                true /* isSinglePointer */)
+    }
+
+    override fun onKeyUp(clipId: Long) {
+        val clipContent = clipboardHistoryManager?.getHistoryEntryContent(clipId)
+        keyboardActionListener?.onTextInput(clipContent?.content.toString())
+        keyboardActionListener?.onReleaseKey(Constants.CODE_UNSPECIFIED,
+                false /* withSliding */)
+    }
+
+    override fun onClipboardHistoryEntryAdded(at: Int) {
+        clipboardAdapter.notifyItemInserted(at)
+        clipboardRecyclerView.smoothScrollToPosition(at)
+    }
+
+    override fun onClipboardHistoryEntriesRemoved(position: Int, count: Int) {
+        clipboardAdapter.notifyItemRangeRemoved(position, count)
+    }
+
+    override fun onClipboardHistoryEntryMoved(from: Int, to: Int) {
+        clipboardAdapter.notifyItemMoved(from, to)
+        clipboardAdapter.notifyItemChanged(to)
+        if (to < from) clipboardRecyclerView.smoothScrollToPosition(to)
+    }
+}

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/clipboard/ClipboardLayoutParams.kt

@@ -0,0 +1,68 @@
+package org.dslul.openboard.inputmethod.keyboard.clipboard
+
+import android.content.res.Resources
+import android.view.View
+import android.widget.FrameLayout
+import android.widget.LinearLayout
+import androidx.recyclerview.widget.RecyclerView
+import org.dslul.openboard.inputmethod.latin.R
+import org.dslul.openboard.inputmethod.latin.utils.ResourceUtils
+
+class ClipboardLayoutParams(res: Resources) {
+
+    private val keyVerticalGap: Int
+    private val keyHorizontalGap: Int
+    private val topPadding: Int
+    private val bottomPadding: Int
+    private val listHeight: Int
+    private val actionBarHeight: Int
+
+    companion object {
+        private const val DEFAULT_KEYBOARD_ROWS = 4
+    }
+
+    init {
+        val defaultKeyboardHeight = ResourceUtils.getDefaultKeyboardHeight(res)
+        val suggestionStripHeight = res.getDimensionPixelSize(R.dimen.config_suggestions_strip_height)
+        val defaultKeyboardWidth = ResourceUtils.getDefaultKeyboardWidth(res)
+
+        keyVerticalGap = res.getFraction(R.fraction.config_key_vertical_gap_holo,
+                defaultKeyboardHeight, defaultKeyboardHeight).toInt()
+        bottomPadding = res.getFraction(R.fraction.config_keyboard_bottom_padding_holo,
+                defaultKeyboardHeight, defaultKeyboardHeight).toInt()
+        topPadding = res.getFraction(R.fraction.config_keyboard_top_padding_holo,
+                defaultKeyboardHeight, defaultKeyboardHeight).toInt()
+        keyHorizontalGap = res.getFraction(R.fraction.config_key_horizontal_gap_holo,
+                defaultKeyboardWidth, defaultKeyboardWidth).toInt()
+
+        actionBarHeight = (defaultKeyboardHeight - bottomPadding - topPadding) / DEFAULT_KEYBOARD_ROWS - keyVerticalGap / 2
+        listHeight = defaultKeyboardHeight + suggestionStripHeight - actionBarHeight - bottomPadding
+    }
+
+    fun setListProperties(recycler: RecyclerView) {
+        (recycler.layoutParams as FrameLayout.LayoutParams).apply {
+            height = listHeight
+            recycler.layoutParams = this
+        }
+    }
+
+    fun setActionBarProperties(layout: FrameLayout) {
+        (layout.layoutParams as LinearLayout.LayoutParams).apply {
+            height = actionBarHeight
+            layout.layoutParams = this
+        }
+    }
+
+    fun setItemProperties(view: View) {
+        (view.layoutParams as RecyclerView.LayoutParams).apply {
+            topMargin = keyHorizontalGap / 2
+            bottomMargin = keyVerticalGap / 2
+            marginStart = keyHorizontalGap / 2
+            marginEnd = keyHorizontalGap / 2
+            view.layoutParams = this
+        }
+    }
+
+    val actionBarContentHeight
+        get() = actionBarHeight
+}

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/clipboard/OnKeyEventListener.kt

@@ -0,0 +1,9 @@
+package org.dslul.openboard.inputmethod.keyboard.clipboard
+
+interface OnKeyEventListener {
+
+    fun onKeyDown(clipId: Long)
+
+    fun onKeyUp(clipId: Long)
+
+}

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/internal/KeyboardCodesSet.java

@@ -53,6 +53,8 @@ public final class KeyboardCodesSet {
         "key_emoji",
         "key_alpha_from_emoji",
         "key_unspecified",
+        "key_clipboard",
+        "key_alpha_from_clipboard"
     };
 
     private static final int[] DEFAULT = {
@@ -73,6 +75,8 @@ public final class KeyboardCodesSet {
         Constants.CODE_EMOJI,
         Constants.CODE_ALPHA_FROM_EMOJI,
         Constants.CODE_UNSPECIFIED,
+        Constants.CODE_CLIPBOARD,
+        Constants.CODE_ALPHA_FROM_CLIPBOARD
     };
 
     static {

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/internal/KeyboardIconsSet.java

@@ -52,7 +52,6 @@ public final class KeyboardIconsSet {
     public static final String NAME_PREVIOUS_KEY = "previous_key";
     public static final String NAME_TAB_KEY = "tab_key";
     public static final String NAME_SHORTCUT_KEY = "shortcut_key";
-    public static final String NAME_CLIPBOARD_KEY = "clipboard_key";
     public static final String NAME_INCOGNITO_KEY = "incognito_key";
     public static final String NAME_SHORTCUT_KEY_DISABLED = "shortcut_key_disabled";
     public static final String NAME_LANGUAGE_SWITCH_KEY = "language_switch_key";
@@ -60,6 +59,9 @@ public final class KeyboardIconsSet {
     public static final String NAME_ZWJ_KEY = "zwj_key";
     public static final String NAME_EMOJI_ACTION_KEY = "emoji_action_key";
     public static final String NAME_EMOJI_NORMAL_KEY = "emoji_normal_key";
+    public static final String NAME_CLIPBOARD_ACTION_KEY = "clipboard_action_key";
+    public static final String NAME_CLIPBOARD_NORMAL_KEY = "clipboard_normal_key";
+    public static final String NAME_CLEAR_CLIPBOARD_KEY = "clear_clipboard_key";
 
     private static final SparseIntArray ATTR_ID_TO_ICON_ID = new SparseIntArray();
 
@@ -81,7 +83,6 @@ public final class KeyboardIconsSet {
         NAME_PREVIOUS_KEY,                R.styleable.Keyboard_iconPreviousKey,
         NAME_TAB_KEY,                     R.styleable.Keyboard_iconTabKey,
         NAME_SHORTCUT_KEY,                R.styleable.Keyboard_iconShortcutKey,
-        NAME_CLIPBOARD_KEY,               R.styleable.Keyboard_iconClipboardKey,
         NAME_INCOGNITO_KEY,               R.styleable.Keyboard_iconIncognitoKey,
         NAME_SPACE_KEY_FOR_NUMBER_LAYOUT, R.styleable.Keyboard_iconSpaceKeyForNumberLayout,
         NAME_SHIFT_KEY_SHIFTED,           R.styleable.Keyboard_iconShiftKeyShifted,
@@ -91,6 +92,9 @@ public final class KeyboardIconsSet {
         NAME_ZWJ_KEY,                     R.styleable.Keyboard_iconZwjKey,
         NAME_EMOJI_ACTION_KEY,            R.styleable.Keyboard_iconEmojiActionKey,
         NAME_EMOJI_NORMAL_KEY,            R.styleable.Keyboard_iconEmojiNormalKey,
+        NAME_CLIPBOARD_ACTION_KEY,        R.styleable.Keyboard_iconClipboardActionKey,
+        NAME_CLIPBOARD_NORMAL_KEY,        R.styleable.Keyboard_iconClipboardNormalKey,
+        NAME_CLEAR_CLIPBOARD_KEY,         R.styleable.Keyboard_iconClearClipboardKey,
     };
 
     private static int NUM_ICONS = NAMES_AND_ATTR_IDS.length / 2;

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/internal/KeyboardState.java

@@ -50,6 +50,7 @@ public final class KeyboardState {
         void setAlphabetShiftLockedKeyboard();
         void setAlphabetShiftLockShiftedKeyboard();
         void setEmojiKeyboard();
+        void setClipboardKeyboard();
         void setSymbolsKeyboard();
         void setSymbolsShiftedKeyboard();
 
@@ -81,10 +82,11 @@ public final class KeyboardState {
     private static final int SWITCH_STATE_MOMENTARY_ALPHA_SHIFT = 5;
     private int mSwitchState = SWITCH_STATE_ALPHA;
 
-    // TODO: Consolidate these two mode booleans into one integer to distinguish between alphabet,
-    // symbols, and emoji mode.
-    private boolean mIsAlphabetMode;
-    private boolean mIsEmojiMode;
+    private static final int MODE_ALPHABET = 0;
+    private static final int MODE_SYMBOLS = 1;
+    private static final int MODE_EMOJI = 2;
+    private static final int MODE_CLIPBOARD = 3;
+    private int mMode = MODE_ALPHABET;
     private AlphabetShiftState mAlphabetShiftState = new AlphabetShiftState();
     private boolean mIsSymbolShifted;
     private boolean mPrevMainKeyboardWasShiftLocked;
@@ -99,9 +101,8 @@ public final class KeyboardState {
 
     static final class SavedKeyboardState {
         public boolean mIsValid;
-        public boolean mIsAlphabetMode;
         public boolean mIsAlphabetShiftLocked;
-        public boolean mIsEmojiMode;
+        public int mMode;
         public int mShiftMode;
 
         @Override
@@ -109,13 +110,16 @@ public final class KeyboardState {
             if (!mIsValid) {
                 return "INVALID";
             }
-            if (mIsAlphabetMode) {
+            if (mMode == MODE_ALPHABET) {
                 return mIsAlphabetShiftLocked ? "ALPHABET_SHIFT_LOCKED"
                         : "ALPHABET_" + shiftModeToString(mShiftMode);
             }
-            if (mIsEmojiMode) {
+            if (mMode == MODE_EMOJI) {
                 return "EMOJI";
             }
+            if (mMode == MODE_CLIPBOARD) {
+                return "CLIPBOARD";
+            }
             return "SYMBOLS_" + shiftModeToString(mShiftMode);
         }
     }
@@ -152,9 +156,8 @@ public final class KeyboardState {
 
     public void onSaveKeyboardState() {
         final SavedKeyboardState state = mSavedKeyboardState;
-        state.mIsAlphabetMode = mIsAlphabetMode;
-        state.mIsEmojiMode = mIsEmojiMode;
-        if (mIsAlphabetMode) {
+        state.mMode = mMode;
+        if (mMode == MODE_ALPHABET) {
             state.mIsAlphabetShiftLocked = mAlphabetShiftState.isShiftLocked();
             state.mShiftMode = mAlphabetShiftState.isAutomaticShifted() ? AUTOMATIC_SHIFT
                     : (mAlphabetShiftState.isShiftedOrShiftLocked() ? MANUAL_SHIFT : UNSHIFT);
@@ -175,7 +178,7 @@ public final class KeyboardState {
                     + " " + stateToString(autoCapsFlags, recapitalizeMode));
         }
         mPrevMainKeyboardWasShiftLocked = state.mIsAlphabetShiftLocked;
-        if (state.mIsAlphabetMode) {
+        if (state.mMode == MODE_ALPHABET) {
             setAlphabetKeyboard(autoCapsFlags, recapitalizeMode);
             setShiftLocked(state.mIsAlphabetShiftLocked);
             if (!state.mIsAlphabetShiftLocked) {
@@ -183,10 +186,14 @@ public final class KeyboardState {
             }
             return;
         }
-        if (state.mIsEmojiMode) {
+        if (state.mMode == MODE_EMOJI) {
             setEmojiKeyboard();
             return;
         }
+        if (state.mMode == MODE_CLIPBOARD) {
+            setClipboardKeyboard();
+            return;
+        }
         // Symbol mode
         if (state.mShiftMode == MANUAL_SHIFT) {
             setSymbolsShiftedKeyboard();
@@ -199,7 +206,7 @@ public final class KeyboardState {
         if (DEBUG_INTERNAL_ACTION) {
             Log.d(TAG, "setShifted: shiftMode=" + shiftModeToString(shiftMode) + " " + this);
         }
-        if (!mIsAlphabetMode) return;
+        if (mMode != MODE_ALPHABET) return;
         final int prevShiftMode;
         if (mAlphabetShiftState.isAutomaticShifted()) {
             prevShiftMode = AUTOMATIC_SHIFT;
@@ -238,7 +245,7 @@ public final class KeyboardState {
         if (DEBUG_INTERNAL_ACTION) {
             Log.d(TAG, "setShiftLocked: shiftLocked=" + shiftLocked + " " + this);
         }
-        if (!mIsAlphabetMode) return;
+        if (mMode != MODE_ALPHABET) return;
         if (shiftLocked && (!mAlphabetShiftState.isShiftLocked()
                 || mAlphabetShiftState.isShiftLockShifted())) {
             mSwitchActions.setAlphabetShiftLockedKeyboard();
@@ -254,7 +261,7 @@ public final class KeyboardState {
             Log.d(TAG, "toggleAlphabetAndSymbols: "
                     + stateToString(autoCapsFlags, recapitalizeMode));
         }
-        if (mIsAlphabetMode) {
+        if (mMode == MODE_ALPHABET) {
             mPrevMainKeyboardWasShiftLocked = mAlphabetShiftState.isShiftLocked();
             if (mPrevSymbolsKeyboardWasShifted) {
                 setSymbolsShiftedKeyboard();
@@ -279,7 +286,7 @@ public final class KeyboardState {
             Log.d(TAG, "resetKeyboardStateToAlphabet: "
                     + stateToString(autoCapsFlags, recapitalizeMode));
         }
-        if (mIsAlphabetMode) return;
+        if (mMode == MODE_ALPHABET) return;
 
         mPrevSymbolsKeyboardWasShifted = mIsSymbolShifted;
         setAlphabetKeyboard(autoCapsFlags, recapitalizeMode);
@@ -303,8 +310,7 @@ public final class KeyboardState {
         }
 
         mSwitchActions.setAlphabetKeyboard();
-        mIsAlphabetMode = true;
-        mIsEmojiMode = false;
+        mMode = MODE_ALPHABET;
         mIsSymbolShifted = false;
         mRecapitalizeMode = RecapitalizeStatus.NOT_A_RECAPITALIZE_MODE;
         mSwitchState = SWITCH_STATE_ALPHA;
@@ -316,7 +322,7 @@ public final class KeyboardState {
             Log.d(TAG, "setSymbolsKeyboard");
         }
         mSwitchActions.setSymbolsKeyboard();
-        mIsAlphabetMode = false;
+        mMode = MODE_SYMBOLS;
         mIsSymbolShifted = false;
         mRecapitalizeMode = RecapitalizeStatus.NOT_A_RECAPITALIZE_MODE;
         // Reset alphabet shift state.
@@ -329,7 +335,7 @@ public final class KeyboardState {
             Log.d(TAG, "setSymbolsShiftedKeyboard");
         }
         mSwitchActions.setSymbolsShiftedKeyboard();
-        mIsAlphabetMode = false;
+        mMode = MODE_SYMBOLS;
         mIsSymbolShifted = true;
         mRecapitalizeMode = RecapitalizeStatus.NOT_A_RECAPITALIZE_MODE;
         // Reset alphabet shift state.
@@ -341,8 +347,7 @@ public final class KeyboardState {
         if (DEBUG_INTERNAL_ACTION) {
             Log.d(TAG, "setEmojiKeyboard");
         }
-        mIsAlphabetMode = false;
-        mIsEmojiMode = true;
+        mMode = MODE_EMOJI;
         mRecapitalizeMode = RecapitalizeStatus.NOT_A_RECAPITALIZE_MODE;
         // Remember caps lock mode and reset alphabet shift state.
         mPrevMainKeyboardWasShiftLocked = mAlphabetShiftState.isShiftLocked();
@@ -350,6 +355,18 @@ public final class KeyboardState {
         mSwitchActions.setEmojiKeyboard();
     }
 
+    private void setClipboardKeyboard() {
+        if (DEBUG_INTERNAL_ACTION) {
+            Log.d(TAG, "setClipboardKeyboard");
+        }
+        mMode = MODE_CLIPBOARD;
+        mRecapitalizeMode = RecapitalizeStatus.NOT_A_RECAPITALIZE_MODE;
+        // Remember caps lock mode and reset alphabet shift state.
+        mPrevMainKeyboardWasShiftLocked = mAlphabetShiftState.isShiftLocked();
+        mAlphabetShiftState.setShiftLocked(false);
+        mSwitchActions.setClipboardKeyboard();
+    }
+
     public void onPressKey(final int code, final boolean isSinglePointer, final int autoCapsFlags,
             final int recapitalizeMode) {
         if (DEBUG_EVENT) {
@@ -379,7 +396,7 @@ public final class KeyboardState {
             // As for #3, please note that it's required to check even when the auto caps mode is
             // off because, for example, we may be in the #1 state within the manual temporary
             // shifted mode.
-            if (!isSinglePointer && mIsAlphabetMode
+            if (!isSinglePointer && mMode == MODE_ALPHABET
                     && autoCapsFlags != TextUtils.CAP_MODE_CHARACTERS) {
                 final boolean needsToResetAutoCaps = mAlphabetShiftState.isAutomaticShifted()
                         || (mAlphabetShiftState.isManualShifted() && mShiftKeyState.isReleasing());
@@ -463,7 +480,7 @@ public final class KeyboardState {
     }
 
     private void updateAlphabetShiftState(final int autoCapsFlags, final int recapitalizeMode) {
-        if (!mIsAlphabetMode) return;
+        if (mMode != MODE_ALPHABET) return;
         if (RecapitalizeStatus.NOT_A_RECAPITALIZE_MODE != recapitalizeMode) {
             // We are recapitalizing. Match the keyboard to the current recapitalize state.
             updateShiftStateForRecapitalize(recapitalizeMode);
@@ -490,7 +507,7 @@ public final class KeyboardState {
         if (RecapitalizeStatus.NOT_A_RECAPITALIZE_MODE != mRecapitalizeMode) {
             return;
         }
-        if (mIsAlphabetMode) {
+        if (mMode == MODE_ALPHABET) {
             mIsInDoubleTapShiftKey = mSwitchActions.isInDoubleTapShiftKeyTimeout();
             if (!mIsInDoubleTapShiftKey) {
                 // This is first tap.
@@ -541,7 +558,7 @@ public final class KeyboardState {
             // We are recapitalizing. We should match the keyboard state to the recapitalize
             // state in priority.
             updateShiftStateForRecapitalize(mRecapitalizeMode);
-        } else if (mIsAlphabetMode) {
+        } else if (mMode == MODE_ALPHABET) {
             final boolean isShiftLocked = mAlphabetShiftState.isShiftLocked();
             mIsInAlphabetUnshiftedFromShifted = false;
             if (mIsInDoubleTapShiftKey) {
@@ -629,7 +646,7 @@ public final class KeyboardState {
         case SWITCH_STATE_MOMENTARY_ALPHA_AND_SYMBOL:
             if (code == Constants.CODE_SWITCH_ALPHA_SYMBOL) {
                 // Detected only the mode change key has been pressed, and then released.
-                if (mIsAlphabetMode) {
+                if (mMode == MODE_ALPHABET) {
                     mSwitchState = SWITCH_STATE_ALPHA;
                 } else {
                     mSwitchState = SWITCH_STATE_SYMBOL_BEGIN;
@@ -644,8 +661,8 @@ public final class KeyboardState {
             }
             break;
         case SWITCH_STATE_SYMBOL_BEGIN:
-            if (mIsEmojiMode) {
-                // When in the Emoji keyboard, we don't want to switch back to the main layout even
+            if (mMode == MODE_EMOJI || mMode == MODE_CLIPBOARD) {
+                // When in the Emoji keyboard or clipboard one, we don't want to switch back to the main layout even
                 // after the user hits an emoji letter followed by an enter or a space.
                 break;
             }
@@ -671,6 +688,10 @@ public final class KeyboardState {
             setEmojiKeyboard();
         } else if (code == Constants.CODE_ALPHA_FROM_EMOJI) {
             setAlphabetKeyboard(autoCapsFlags, recapitalizeMode);
+        } else if (code == Constants.CODE_CLIPBOARD) {
+            setClipboardKeyboard();
+        } else if (code == Constants.CODE_ALPHA_FROM_CLIPBOARD) {
+            setAlphabetKeyboard(autoCapsFlags, recapitalizeMode);
         }
     }
 
@@ -697,7 +718,7 @@ public final class KeyboardState {
 
     @Override
     public String toString() {
-        return "[keyboard=" + (mIsAlphabetMode ? mAlphabetShiftState.toString()
+        return "[keyboard=" + (mMode == MODE_ALPHABET ? mAlphabetShiftState.toString()
                 : (mIsSymbolShifted ? "SYMBOLS_SHIFTED" : "SYMBOLS"))
                 + " shift=" + mShiftKeyState
                 + " symbol=" + mSymbolKeyState

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/internal/KeyboardTextsTable.java

@@ -260,6 +260,8 @@ public final class KeyboardTextsTable {
         /* 174: 0 */ "morekeys_tablet_double_quote",
         /* 175: 0 */ "keyspec_emoji_action_key",
         /* 176: 0 */ "keyspec_emoji_normal_key",
+        /* 177: 0 */ "keyspec_clipboard_action_key",
+        /* 178: 0 */ "keyspec_clipboard_normal_key",
     };
 
     private static final String EMPTY = "";
@@ -482,6 +484,8 @@ public final class KeyboardTextsTable {
         /* morekeys_tablet_double_quote */ "!fixedColumnOrder!6,!text/double_quotes,!text/single_quotes,!text/double_angle_quotes,!text/single_angle_quotes",
         /* keyspec_emoji_action_key */ "!icon/emoji_action_key|!code/key_emoji",
         /* keyspec_emoji_normal_key */ "!icon/emoji_normal_key|!code/key_emoji",
+        /* keyspec_clipbaord_action_key */ "!icon/clipboard_action_key|!code/key_clipboard",
+        /* keyspec_clipboard_normal_key */ "!icon/clipboard_normal_key|!code/key_clipboard",
     };
 
     /* Locale af: Afrikaans */

app/src/main/java/org/dslul/openboard/inputmethod/latin/ClipboardHistoryEntry.kt

@@ -0,0 +1,13 @@
+package org.dslul.openboard.inputmethod.latin
+
+data class ClipboardHistoryEntry (
+        var id: Long,
+        val content: CharSequence,
+        var isPinned: Boolean = false
+) : Comparable<ClipboardHistoryEntry> {
+
+    override fun compareTo(other: ClipboardHistoryEntry): Int {
+        val result = other.isPinned.compareTo(isPinned)
+        return if (result != 0) result else other.id.compareTo(id)
+    }
+}

app/src/main/java/org/dslul/openboard/inputmethod/latin/ClipboardHistoryManager.kt

@@ -0,0 +1,166 @@
+package org.dslul.openboard.inputmethod.latin
+
+import android.content.ClipboardManager
+import android.content.Context
+import android.text.TextUtils
+import android.util.Base64
+import android.util.Log
+import org.dslul.openboard.inputmethod.compat.ClipboardManagerCompat
+import org.dslul.openboard.inputmethod.latin.utils.JsonUtils
+import java.io.File
+import java.lang.Exception
+import java.util.*
+
+class ClipboardHistoryManager(
+        private val latinIME: LatinIME
+) : ClipboardManager.OnPrimaryClipChangedListener {
+
+    private lateinit var pinnedHistoryClipsFile: File
+    private lateinit var clipboardManager: ClipboardManager
+    private val historyEntries: MutableList<ClipboardHistoryEntry>
+    private var onHistoryChangeListener: OnHistoryChangeListener? = null
+
+    fun onCreate() {
+        pinnedHistoryClipsFile = File(latinIME.filesDir, PINNED_CLIPS_DATA_FILE_NAME)
+        clipboardManager = latinIME.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
+        fetchPrimaryClip()
+        clipboardManager.addPrimaryClipChangedListener(this)
+        startLoadPinnedClipsFromDisk()
+    }
+
+    fun onPinnedClipsAvailable(pinnedClips: List<ClipboardHistoryEntry>) {
+        historyEntries.addAll(pinnedClips)
+        sortHistoryEntries()
+        if (onHistoryChangeListener != null) {
+            pinnedClips.forEach {
+                onHistoryChangeListener?.onClipboardHistoryEntryAdded(historyEntries.indexOf(it))
+            }
+        }
+    }
+
+    fun onDestroy() {
+        clipboardManager.removePrimaryClipChangedListener(this)
+    }
+
+    override fun onPrimaryClipChanged() = fetchPrimaryClip()
+
+    private fun fetchPrimaryClip() {
+        if (!clipboardManager.hasPrimaryClip()) return
+        val clipData = clipboardManager.primaryClip
+        if (clipData != null && clipData.itemCount > 0 && clipData.getItemAt(0) != null) {
+            val content = clipData.getItemAt(0).coerceToText(latinIME)
+            if (!TextUtils.isEmpty(content)) {
+                val id = System.nanoTime()
+                val entry = ClipboardHistoryEntry(id, content)
+                historyEntries.add(entry)
+                sortHistoryEntries()
+                val at = historyEntries.indexOf(entry)
+                onHistoryChangeListener?.onClipboardHistoryEntryAdded(at)
+            }
+        }
+    }
+
+    fun toggleClipPinned(clipId: Long) {
+        val from = historyEntries.indexOfFirst { it.id == clipId }
+        val historyEntry = historyEntries[from].apply {
+            id = System.nanoTime()
+            isPinned = !isPinned
+        }
+        sortHistoryEntries()
+        val to = historyEntries.indexOf(historyEntry)
+        onHistoryChangeListener?.onClipboardHistoryEntryMoved(from, to)
+        startSavePinnedClipsToDisk()
+    }
+
+    fun clearHistory() {
+        ClipboardManagerCompat.clearPrimaryClip(clipboardManager)
+        val pos = historyEntries.indexOfFirst { !it.isPinned }
+        val count = historyEntries.count { !it.isPinned }
+        historyEntries.removeAll { !it.isPinned }
+        if (onHistoryChangeListener != null) {
+            onHistoryChangeListener?.onClipboardHistoryEntriesRemoved(pos, count)
+        }
+    }
+
+    private fun sortHistoryEntries() {
+        historyEntries.sort()
+    }
+
+    fun getHistorySize() = historyEntries.size
+
+    fun getHistoryEntry(position: Int) = historyEntries[position]
+
+    fun getHistoryEntryContent(id: Long) = historyEntries.first { it.id == id }
+
+    fun setHistoryChangeListener(l: OnHistoryChangeListener?) {
+        onHistoryChangeListener = l
+    }
+
+    private fun startLoadPinnedClipsFromDisk() {
+        object : Thread("$TAG-load") {
+            override fun run() {
+                loadFromDisk()
+            }
+        }.start()
+    }
+
+    private fun loadFromDisk() {
+        // Debugging
+        if (pinnedHistoryClipsFile.exists() && !pinnedHistoryClipsFile.canRead()) {
+            Log.w(TAG, "Attempt to read pinned clips file $pinnedHistoryClipsFile without permission")
+        }
+        var list = emptyList<ClipboardHistoryEntry>()
+        try {
+            if (pinnedHistoryClipsFile.exists()) {
+                val bytes = Base64.decode(pinnedHistoryClipsFile.readText(), Base64.DEFAULT)
+                list = JsonUtils.jsonBytesToHistoryEntryList(bytes)
+            }
+        } catch (e: Exception) {
+            Log.w(TAG, "Couldn't retrieve $pinnedHistoryClipsFile content", e)
+        }
+        latinIME.mHandler.postUpdateClipboardPinnedClips(list)
+    }
+
+    private fun startSavePinnedClipsToDisk() {
+        val localCopy = historyEntries.filter { it.isPinned }.map { it.copy() }
+        object : Thread("$TAG-save") {
+            override fun run() {
+                saveToDisk(localCopy)
+            }
+        }.start()
+    }
+
+    private fun saveToDisk(list: List<ClipboardHistoryEntry>) {
+        // Debugging
+        if (pinnedHistoryClipsFile.exists() && !pinnedHistoryClipsFile.canWrite()) {
+            Log.w(TAG, "Attempt to write pinned clips file $pinnedHistoryClipsFile without permission")
+        }
+        try {
+            pinnedHistoryClipsFile.createNewFile()
+            val jsonStr = JsonUtils.historyEntryListToJsonStr(list)
+            if (!TextUtils.isEmpty(jsonStr)) {
+                val rawText = Base64.encodeToString(jsonStr.encodeToByteArray(), Base64.DEFAULT)
+                pinnedHistoryClipsFile.writeText(rawText)
+            } else {
+                pinnedHistoryClipsFile.writeText("")
+            }
+        } catch (e: Exception) {
+            Log.w(TAG, "Couldn't write to $pinnedHistoryClipsFile", e)
+        }
+    }
+
+    interface OnHistoryChangeListener {
+        fun onClipboardHistoryEntryAdded(at: Int)
+        fun onClipboardHistoryEntriesRemoved(pos: Int, count: Int)
+        fun onClipboardHistoryEntryMoved(from: Int, to: Int)
+    }
+
+    companion object {
+        const val PINNED_CLIPS_DATA_FILE_NAME = "pinned_clips.data"
+        const val TAG = "ClipboardHistoryManager"
+    }
+
+    init {
+        historyEntries = LinkedList()
+    }
+}

app/src/main/java/org/dslul/openboard/inputmethod/latin/LatinIME.java

@@ -211,6 +211,8 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
 
     private GestureConsumer mGestureConsumer = GestureConsumer.NULL_GESTURE_CONSUMER;
 
+    private final ClipboardHistoryManager mClipboardHistoryManager = new ClipboardHistoryManager(this);
+
     public final UIHandler mHandler = new UIHandler(this);
 
     public static final class UIHandler extends LeakGuardHandlerWrapper<LatinIME> {
@@ -226,8 +228,9 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
         private static final int MSG_DEALLOCATE_MEMORY = 9;
         private static final int MSG_RESUME_SUGGESTIONS_FOR_START_INPUT = 10;
         private static final int MSG_SWITCH_LANGUAGE_AUTOMATICALLY = 11;
+        private static final int MSG_UPDATE_CLIPBOARD_PINNED_CLIPS = 12;
         // Update this when adding new messages
-        private static final int MSG_LAST = MSG_SWITCH_LANGUAGE_AUTOMATICALLY;
+        private static final int MSG_LAST = MSG_UPDATE_CLIPBOARD_PINNED_CLIPS;
 
         private static final int ARG1_NOT_GESTURE_INPUT = 0;
         private static final int ARG1_DISMISS_GESTURE_FLOATING_PREVIEW_TEXT = 1;
@@ -324,6 +327,11 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
                 case MSG_SWITCH_LANGUAGE_AUTOMATICALLY:
                     latinIme.switchLanguage((InputMethodSubtype)msg.obj);
                     break;
+                case MSG_UPDATE_CLIPBOARD_PINNED_CLIPS:
+                    @SuppressWarnings("unchecked")
+                    List<ClipboardHistoryEntry> entries = (List<ClipboardHistoryEntry>) msg.obj;
+                    latinIme.mClipboardHistoryManager.onPinnedClipsAvailable(entries);
+                    break;
             }
         }
 
@@ -446,6 +454,10 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
             obtainMessage(MSG_SWITCH_LANGUAGE_AUTOMATICALLY, subtype).sendToTarget();
         }
 
+        public void postUpdateClipboardPinnedClips(final List<ClipboardHistoryEntry> clips) {
+            obtainMessage(MSG_UPDATE_CLIPBOARD_PINNED_CLIPS, clips).sendToTarget();
+        }
+
         // Working variables for the following methods.
         private boolean mIsOrientationChanging;
         private boolean mPendingSuccessiveImsCallback;
@@ -612,6 +624,7 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
         mStatsUtilsManager.onCreate(this /* context */, mDictionaryFacilitator);
         super.onCreate();
 
+        mClipboardHistoryManager.onCreate();
         mHandler.onCreate();
 
         // TODO: Resolve mutual dependencies of {@link #loadSettings()} and
@@ -750,6 +763,7 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
 
     @Override
     public void onDestroy() {
+        mClipboardHistoryManager.onDestroy();
         mDictionaryFacilitator.closeDictionaries();
         mSettings.onDestroy();
         unregisterReceiver(mHideSoftInputReceiver);
@@ -1226,6 +1240,7 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
             return;
         }
         final int suggestionsHeight = (!mKeyboardSwitcher.isShowingEmojiPalettes()
+                && !mKeyboardSwitcher.isShowingClipboardHistory()
                 && mSuggestionStripView.getVisibility() == View.VISIBLE)
                 ? mSuggestionStripView.getHeight() : 0;
         final int visibleTopY = inputHeight - visibleKeyboardView.getHeight() - suggestionsHeight;
@@ -1828,6 +1843,10 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
         }
     };
 
+    public ClipboardHistoryManager getClipboardHistoryManager() {
+        return mClipboardHistoryManager;
+    }
+
     void launchSettings() {
         mInputLogic.commitTyped(mSettings.getCurrent(), LastComposedWord.NOT_A_SEPARATOR);
         requestHideSelf(0);

app/src/main/java/org/dslul/openboard/inputmethod/latin/common/Constants.java

@@ -242,11 +242,13 @@ public final class Constants {
     public static final int CODE_ACTION_PREVIOUS = -9;
     public static final int CODE_LANGUAGE_SWITCH = -10;
     public static final int CODE_EMOJI = -11;
-    public static final int CODE_SHIFT_ENTER = -12;
-    public static final int CODE_SYMBOL_SHIFT = -13;
-    public static final int CODE_ALPHA_FROM_EMOJI = -14;
+    public static final int CODE_CLIPBOARD = -12;
+    public static final int CODE_SHIFT_ENTER = -13;
+    public static final int CODE_SYMBOL_SHIFT = -14;
+    public static final int CODE_ALPHA_FROM_EMOJI = -15;
+    public static final int CODE_ALPHA_FROM_CLIPBOARD = -16;
     // Code value representing the code is not specified.
-    public static final int CODE_UNSPECIFIED = -15;
+    public static final int CODE_UNSPECIFIED = -17;
 
     public static boolean isLetterCode(final int code) {
         return code >= CODE_SPACE;
@@ -266,8 +268,10 @@ public final class Constants {
         case CODE_ACTION_PREVIOUS: return "actionPrevious";
         case CODE_LANGUAGE_SWITCH: return "languageSwitch";
         case CODE_EMOJI: return "emoji";
+        case CODE_CLIPBOARD: return "clipboard";
         case CODE_SHIFT_ENTER: return "shiftEnter";
         case CODE_ALPHA_FROM_EMOJI: return "alpha";
+        case CODE_ALPHA_FROM_CLIPBOARD: return "alpha";
         case CODE_UNSPECIFIED: return "unspec";
         case CODE_TAB: return "tab";
         case CODE_ENTER: return "enter";

app/src/main/java/org/dslul/openboard/inputmethod/latin/inputlogic/InputLogic.java

@@ -692,6 +692,14 @@ public final class InputLogic {
                 // Note: Switching back from Emoji keyboard to the main keyboard is being
                 // handled in {@link KeyboardState#onEvent(Event,int)}.
                 break;
+            case Constants.CODE_CLIPBOARD:
+                // Note: Switching clipboard keyboard is being handled in
+                // {@link KeyboardState#onEvent(Event,int)}.
+                break;
+            case Constants.CODE_ALPHA_FROM_CLIPBOARD:
+                // Note: Switching back from clipboard keyboard to the main keyboard is being
+                // handled in {@link KeyboardState#onEvent(Event,int)}.
+                break;
             case Constants.CODE_SHIFT_ENTER:
                 final Event tmpEvent = Event.createSoftwareKeypressEvent(Constants.CODE_ENTER,
                         event.getMKeyCode(), event.getMX(), event.getMY(), event.isKeyRepeat());

app/src/main/java/org/dslul/openboard/inputmethod/latin/suggestions/SuggestionStripView.java

@@ -40,6 +40,7 @@ import android.widget.TextView;
 
 import org.dslul.openboard.inputmethod.accessibility.AccessibilityUtils;
 import org.dslul.openboard.inputmethod.keyboard.Keyboard;
+import org.dslul.openboard.inputmethod.keyboard.KeyboardSwitcher;
 import org.dslul.openboard.inputmethod.keyboard.MainKeyboardView;
 import org.dslul.openboard.inputmethod.keyboard.MoreKeysPanel;
 import org.dslul.openboard.inputmethod.latin.AudioAndHapticFeedbackManager;
@@ -167,7 +168,7 @@ public final class SuggestionStripView extends RelativeLayout implements OnClick
                 R.styleable.Keyboard, defStyle, R.style.SuggestionStripView);
         final Drawable iconVoice = keyboardAttr.getDrawable(R.styleable.Keyboard_iconShortcutKey);
         final Drawable iconIncognito = keyboardAttr.getDrawable(R.styleable.Keyboard_iconIncognitoKey);
-        final Drawable iconClipboard = keyboardAttr.getDrawable(R.styleable.Keyboard_iconClipboardKey);
+        final Drawable iconClipboard = keyboardAttr.getDrawable(R.styleable.Keyboard_iconClipboardNormalKey);
         keyboardAttr.recycle();
         mVoiceKey.setImageDrawable(iconVoice);
         mVoiceKey.setOnClickListener(this);
@@ -442,12 +443,8 @@ public final class SuggestionStripView extends RelativeLayout implements OnClick
             return;
         }
         if (view == mClipboardKey) {
-            CharSequence selectionSequence = mListener.getSelection();
-            if (selectionSequence != null && selectionSequence.length() > 0
-                    && !Settings.getInstance().getCurrent().mInputAttributes.mIsPasswordField) {
-                ClipboardManager clipboardManager = (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
-                clipboardManager.setPrimaryClip(ClipData.newPlainText(selectionSequence, selectionSequence));
-            }
+            final KeyboardSwitcher switcher = KeyboardSwitcher.getInstance();
+            switcher.onToggleKeyboard(KeyboardSwitcher.KeyboardSwitchState.CLIPBOARD);
             return;
         }
 

app/src/main/java/org/dslul/openboard/inputmethod/latin/utils/JsonUtils.java

@@ -16,15 +16,20 @@
 
 package org.dslul.openboard.inputmethod.latin.utils;
 
+import android.text.TextUtils;
 import android.util.JsonReader;
 import android.util.JsonWriter;
 import android.util.Log;
+import org.dslul.openboard.inputmethod.latin.ClipboardHistoryEntry;
 
+import java.io.ByteArrayInputStream;
 import java.io.Closeable;
 import java.io.IOException;
+import java.io.InputStreamReader;
 import java.io.StringReader;
 import java.io.StringWriter;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
 
@@ -33,6 +38,8 @@ public final class JsonUtils {
 
     private static final String INTEGER_CLASS_NAME = Integer.class.getSimpleName();
     private static final String STRING_CLASS_NAME = String.class.getSimpleName();
+    private static final String CLIPBOARD_HISTORY_ENTRY_ID_KEY = "id";
+    private static final String CLIPBOARD_HISTORY_ENTRY_CONTENT_KEY = "content";
 
     private static final String EMPTY_STRING = "";
 
@@ -91,6 +98,63 @@ public final class JsonUtils {
         return EMPTY_STRING;
     }
 
+    public static List<ClipboardHistoryEntry> jsonBytesToHistoryEntryList(final byte[] bytes) {
+        final ArrayList<ClipboardHistoryEntry> list = new ArrayList<>();
+        final JsonReader reader = new JsonReader(new InputStreamReader(new ByteArrayInputStream(bytes)));
+        try {
+            reader.beginArray();
+            while (reader.hasNext()) {
+                reader.beginObject();
+                long id = 0;
+                String content = EMPTY_STRING;
+                while (reader.hasNext()) {
+                    final String name = reader.nextName();
+                    if (name.equals(CLIPBOARD_HISTORY_ENTRY_ID_KEY)) {
+                        id = reader.nextLong();
+                    } else if (name.equals(CLIPBOARD_HISTORY_ENTRY_CONTENT_KEY)) {
+                        content = reader.nextString();
+                    } else {
+                        Log.w(TAG, "Invalid name: " + name);
+                        reader.skipValue();
+                    }
+                }
+                if (id > 0 && !TextUtils.isEmpty(content)) {
+                    list.add(new ClipboardHistoryEntry(id, content, true));
+                }
+                reader.endObject();
+            }
+            reader.endArray();
+            return list;
+        } catch (final IOException e) {
+        } finally {
+            close(reader);
+        }
+        return Collections.emptyList();
+    }
+
+    public static String historyEntryListToJsonStr(final Collection<ClipboardHistoryEntry> entries) {
+        if (entries == null || entries.isEmpty()) {
+            return EMPTY_STRING;
+        }
+        final StringWriter sw = new StringWriter();
+        final JsonWriter writer = new JsonWriter(sw);
+        try {
+            writer.beginArray();
+            for (final ClipboardHistoryEntry e : entries) {
+                writer.beginObject();
+                writer.name(CLIPBOARD_HISTORY_ENTRY_ID_KEY).value(e.getId());
+                writer.name(CLIPBOARD_HISTORY_ENTRY_CONTENT_KEY).value(e.getContent().toString());
+                writer.endObject();
+            }
+            writer.endArray();
+            return sw.toString();
+        } catch (final IOException e) {
+        } finally {
+            close(writer);
+        }
+        return EMPTY_STRING;
+    }
+
     private static void close(final Closeable closeable) {
         try {
             if (closeable != null) {

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

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+    <ImageView
+            android:id="@+id/clipboard_entry_pinned_icon"
+            android:layout_width="@dimen/config_clipboard_pinned_icon_size"
+            android:layout_height="@dimen/config_clipboard_pinned_icon_size"
+            android:layout_marginVertical="8dp"
+            android:layout_marginStart="4dp"/>
+
+    <!-- Provide audio and haptic feedback by ourselves based on the keyboard settings.
+         We just need to ignore the system's audio and haptic feedback settings. -->
+    <TextView
+            android:id="@+id/clipboard_entry_content"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:layout_marginTop="4dp"
+            android:layout_marginBottom="6dp"
+            android:layout_marginHorizontal="8dp"
+            android:hapticFeedbackEnabled="false"
+            android:soundEffectsEnabled="false"
+            android:ellipsize="end"
+            android:maxLines="4"/>
+
+</LinearLayout>

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

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="utf-8"?>
+<org.dslul.openboard.inputmethod.keyboard.clipboard.ClipboardHistoryView
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom"
+        android:orientation="vertical"
+        style="?attr/clipboardHistoryViewStyle">
+
+    <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+        <TextView
+                android:id="@+id/clipboard_empty_view"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:text="¯\\_(ツ)_/¯"/>
+
+        <org.dslul.openboard.inputmethod.keyboard.clipboard.ClipboardHistoryRecyclerView
+                android:id="@+id/clipboard_list"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"/>
+
+    </FrameLayout>
+
+    <FrameLayout
+            android:id="@+id/clipboard_action_bar"
+            android:layout_width="match_parent"
+            android:layout_height="0dip"
+            android:layout_weight="1"            >
+        <!-- TODO: Implement a KeyView and replace this. -->
+        <!-- Provide audio and haptic feedback by ourselves based on the keyboard settings.
+             We just need to ignore the system's audio and haptic feedback settings. -->
+        <TextView
+                android:id="@+id/clipboard_keyboard_alphabet"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:layout_marginStart="2dp"
+                android:layout_marginTop="1dp"
+                android:layout_marginEnd="1dp"
+                android:layout_gravity="start|center_vertical"
+                android:paddingHorizontal="12dp"
+                android:gravity="center"
+                android:hapticFeedbackEnabled="false"
+                android:soundEffectsEnabled="false" />
+
+        <ImageButton
+                android:id="@+id/clipboard_clear"
+                android:layout_width="@dimen/config_suggestions_strip_edge_key_width"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end|center_vertical"
+                android:layout_marginEnd="2dp"
+                android:padding="8dp"
+                android:hapticFeedbackEnabled="false"
+                android:soundEffectsEnabled="false"
+                android:scaleType="fitCenter"
+                style="?attr/suggestionWordStyle" />
+
+    </FrameLayout>
+
+</org.dslul.openboard.inputmethod.keyboard.clipboard.ClipboardHistoryView>

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

@@ -29,4 +29,7 @@
     <include
         android:id="@+id/emoji_palettes_view"
         layout="@layout/emoji_palettes_view" />
+    <include
+        android:id="@+id/clipboard_history_view"
+        layout="@layout/clipboard_history_view" />
 </org.dslul.openboard.inputmethod.latin.InputView>

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

@@ -58,7 +58,6 @@
             android:layout_width="@dimen/config_suggestions_strip_edge_key_width"
             android:scaleType="fitCenter"
             android:layout_height="fill_parent"
-            android:contentDescription="@string/spoken_description_mic"
             style="?attr/suggestionWordStyle" />
     </LinearLayout>
 </merge>

app/src/main/res/values-land/config.xml

@@ -82,4 +82,7 @@
     <fraction name="config_emoji_keyboard_key_letter_size">70%p</fraction>
     <fraction name="config_emoji_keyboard_key_label_size">70%p</fraction>
     <integer name="config_emoji_keyboard_max_recents_key_count">32</integer>
+
+    <!-- Clipboard keyboard -->
+    <integer name="config_clipboard_keyboard_col_count">3</integer>
 </resources>

app/src/main/res/values-sw600dp-land/config.xml

@@ -70,4 +70,7 @@
     <fraction name="config_emoji_keyboard_key_letter_size">64%p</fraction>
     <fraction name="config_emoji_keyboard_key_label_size">64%p</fraction>
     <integer name="config_emoji_keyboard_max_recents_key_count">36</integer>
+
+    <!-- Clipboard keyboard -->
+    <integer name="config_clipboard_keyboard_col_count">4</integer>
 </resources>

app/src/main/res/values-sw600dp/config.xml

@@ -87,4 +87,7 @@
     <fraction name="config_emoji_keyboard_key_letter_size">78%p</fraction>
     <fraction name="config_emoji_keyboard_key_label_size">78%p</fraction>
     <integer name="config_emoji_keyboard_max_recents_key_count">36</integer>
+
+    <!-- Clipboard keyboard -->
+    <integer name="config_clipboard_keyboard_col_count">3</integer>
 </resources>

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

@@ -30,6 +30,8 @@
         <attr name="mainKeyboardViewStyle" format="reference" />
         <!-- EmojiPalettesView style -->
         <attr name="emojiPalettesViewStyle" format="reference" />
+        <!-- ClipboardHistoryView style -->
+        <attr name="clipboardHistoryViewStyle" format="reference" />
         <!-- MoreKeysKeyboard style -->
         <attr name="moreKeysKeyboardStyle" format="reference" />
         <!-- MoreKeysKeyboardView style -->
@@ -205,6 +207,11 @@
         <attr name="iconEmojiCategory10Tab" format="reference" />
     </declare-styleable>
 
+    <declare-styleable name="ClipboardHistoryView">
+        <attr name="dividerBackground" format="color" />
+        <attr name="iconPinnedClip" format="reference" />
+    </declare-styleable>
+
     <declare-styleable name="SuggestionStripView">
         <attr name="suggestionStripOptions" format="integer">
             <!-- This should be aligned with
@@ -270,7 +277,6 @@
         <attr name="iconPreviousKey" format="reference" />
         <attr name="iconTabKey" format="reference" />
         <attr name="iconShortcutKey" format="reference" />
-        <attr name="iconClipboardKey" format="reference" />
         <attr name="iconIncognitoKey" format="reference" />
         <attr name="iconSpaceKeyForNumberLayout" format="reference" />
         <attr name="iconShiftKeyShifted" format="reference" />
@@ -281,6 +287,9 @@
         <attr name="iconImeKey" format="reference" />
         <attr name="iconEmojiActionKey" format="reference" />
         <attr name="iconEmojiNormalKey" format="reference" />
+        <attr name="iconClipboardActionKey" format="reference" />
+        <attr name="iconClipboardNormalKey" format="reference" />
+        <attr name="iconClearClipboardKey" format="reference" />
     </declare-styleable>
 
     <declare-styleable name="Keyboard_GridRows">

app/src/main/res/values/config-common.xml

@@ -136,6 +136,10 @@
     <!-- Common configuration of Emoji keyboard -->
     <dimen name="config_emoji_category_page_id_height">2dp</dimen>
 
+    <!-- Common configuration of clipboard keyboard -->
+    <dimen name="config_clipboard_divider_height">1.5dp</dimen>
+    <dimen name="config_clipboard_pinned_icon_size">18dp</dimen>
+
     <!-- Inset used in Accessibility mode to avoid accidental key presses when a finger slides off the screen. -->
     <dimen name="config_accessibility_edge_slop">8dp</dimen>
 

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

@@ -93,6 +93,9 @@
     <fraction name="config_emoji_keyboard_key_label_size">78%p</fraction>
     <integer name="config_emoji_keyboard_max_recents_key_count">32</integer>
 
+    <!-- Clipboard keyboard -->
+    <integer name="config_clipboard_keyboard_col_count">2</integer>
+
     <!-- Key codes of hardware keys that can be used to toggle the Emoji layout.
          Each array defines a comma-separated tuple containing:
          1. Key code constant from android.view.KeyEvent

app/src/main/res/values/keyboard-icons-holo.xml

@@ -29,7 +29,6 @@
         <item name="iconSearchKey">@drawable/sym_keyboard_search_holo_dark</item>
         <item name="iconTabKey">@drawable/sym_keyboard_tab_holo_dark</item>
         <item name="iconShortcutKey">@drawable/sym_keyboard_voice_holo_dark</item>
-        <item name="iconClipboardKey">@drawable/sym_keyboard_clipboard_dark</item>
         <item name="iconIncognitoKey">@drawable/sym_keyboard_incognito_dark</item>
         <item name="iconSpaceKeyForNumberLayout">@drawable/sym_keyboard_space_holo_dark</item>
         <item name="iconShiftKeyShifted">@drawable/sym_keyboard_shift_locked_holo_dark</item>
@@ -39,5 +38,8 @@
         <item name="iconZwjKey">@drawable/sym_keyboard_zwj_holo_dark</item>
         <item name="iconEmojiActionKey">@drawable/sym_keyboard_smiley_holo_dark</item>
         <item name="iconEmojiNormalKey">@drawable/sym_keyboard_smiley_holo_dark</item>
+        <item name="iconClipboardActionKey">@drawable/sym_keyboard_clipboard_holo_dark</item>
+        <item name="iconClipboardNormalKey">@drawable/sym_keyboard_clipboard_holo_dark</item>
+        <item name="iconClearClipboardKey">@drawable/sym_keyboard_clear_clipboard_holo_dark</item>
     </style>
 </resources>

app/src/main/res/values/keyboard-icons-lxx-dark-parent.xml

@@ -36,7 +36,6 @@
         <item name="iconPreviousKey">@drawable/sym_keyboard_previous_lxx_dark</item>
         <item name="iconShortcutKey">@drawable/sym_keyboard_voice_lxx_dark</item>
         <item name="iconShortcutKeyDisabled">@drawable/sym_keyboard_voice_off_lxx_dark</item>
-        <item name="iconClipboardKey">@drawable/sym_keyboard_clipboard_dark</item>
         <item name="iconIncognitoKey">@drawable/sym_keyboard_incognito_lxx_dark</item>
         <item name="iconSpaceKeyForNumberLayout">@drawable/sym_keyboard_space_lxx_dark</item>
         <item name="iconLanguageSwitchKey">@drawable/sym_keyboard_language_switch_lxx_dark</item>
@@ -44,5 +43,8 @@
         <item name="iconZwjKey">@drawable/sym_keyboard_zwj_lxx_dark</item>
         <item name="iconEmojiActionKey">@drawable/sym_keyboard_smiley_lxx_dark</item>
         <item name="iconEmojiNormalKey">@drawable/sym_keyboard_smiley_lxx_dark</item>
+        <item name="iconClipboardActionKey">@drawable/sym_keyboard_clipboard_lxx_dark</item>
+        <item name="iconClipboardNormalKey">@drawable/sym_keyboard_clipboard_lxx_dark</item>
+        <item name="iconClearClipboardKey">@drawable/sym_keyboard_clear_clipboard_lxx_dark</item>
     </style>
 </resources>

app/src/main/res/values/keyboard-icons-lxx-light-parent.xml

@@ -36,7 +36,6 @@
         <item name="iconPreviousKey">@drawable/sym_keyboard_previous_lxx_light</item>
         <item name="iconShortcutKey">@drawable/sym_keyboard_voice_lxx_light</item>
         <item name="iconShortcutKeyDisabled">@drawable/sym_keyboard_voice_off_lxx_light</item>
-        <item name="iconClipboardKey">@drawable/sym_keyboard_clipboard_light</item>
         <item name="iconIncognitoKey">@drawable/sym_keyboard_incognito_lxx_light</item>
         <item name="iconSpaceKeyForNumberLayout">@drawable/sym_keyboard_space_lxx_light</item>
         <item name="iconLanguageSwitchKey">@drawable/sym_keyboard_language_switch_lxx_light</item>
@@ -44,5 +43,8 @@
         <item name="iconZwjKey">@drawable/sym_keyboard_zwj_lxx_light</item>
         <item name="iconEmojiActionKey">@drawable/sym_keyboard_smiley_lxx_dark</item>
         <item name="iconEmojiNormalKey">@drawable/sym_keyboard_smiley_lxx_light</item>
+        <item name="iconClipboardActionKey">@drawable/sym_keyboard_clipboard_lxx_dark</item>
+        <item name="iconClipboardNormalKey">@drawable/sym_keyboard_clipboard_lxx_light</item>
+        <item name="iconClearClipboardKey">@drawable/sym_keyboard_clear_clipboard_lxx_light</item>
     </style>
 </resources>

app/src/main/res/values/themes-common.xml

@@ -110,6 +110,7 @@
          delete button, need themed {@link org.dslul.openboard.inputmethod.keyboard.KeyboardView}
          attributes. -->
     <style name="EmojiPalettesView" />
+    <style name="ClipboardHistoryView" />
     <style name="MoreKeysKeyboard" />
     <style name="MoreKeysKeyboardView" />
     <style name="SuggestionStripView" />

app/src/main/res/values/themes-ics.xml

@@ -25,6 +25,7 @@
         <item name="keyboardViewStyle">@style/KeyboardView.ICS</item>
         <item name="mainKeyboardViewStyle">@style/MainKeyboardView.ICS</item>
         <item name="emojiPalettesViewStyle">@style/EmojiPalettesView.ICS</item>
+        <item name="clipboardHistoryViewStyle">@style/ClipboardHistoryView.ICS</item>
         <item name="moreKeysKeyboardStyle">@style/MoreKeysKeyboard.ICS</item>
         <!-- Note: ICS theme uses the same style for both general more keys and action more keys. -->
         <item name="moreKeysKeyboardViewStyle">@style/MoreKeysKeyboardView.ICS</item>
@@ -98,6 +99,13 @@
         <item name="iconEmojiCategory9Tab">@drawable/ic_emoji_flags_holo_dark</item>
         <item name="iconEmojiCategory10Tab">@drawable/ic_emoji_emoticons_holo_dark</item>
     </style>
+    <style
+            name="ClipboardHistoryView.ICS"
+            parent="MainKeyboardView.ICS"
+            >
+        <item name="iconPinnedClip">@drawable/ic_clipboard_pin_holo_dark</item>
+        <item name="dividerBackground">@color/emoji_tab_page_indicator_background_holo</item>
+    </style>
     <style
         name="MoreKeysKeyboard.ICS"
         parent="Keyboard.ICS"

app/src/main/res/values/themes-klp.xml

@@ -25,6 +25,7 @@
         <item name="keyboardViewStyle">@style/KeyboardView.KLP</item>
         <item name="mainKeyboardViewStyle">@style/MainKeyboardView.KLP</item>
         <item name="emojiPalettesViewStyle">@style/EmojiPalettesView.KLP</item>
+        <item name="clipboardHistoryViewStyle">@style/ClipboardHistoryView.KLP</item>
         <item name="moreKeysKeyboardStyle">@style/MoreKeysKeyboard.KLP</item>
         <!-- Note: KLP theme uses the same style for both general more keys and action more keys. -->
         <item name="moreKeysKeyboardViewStyle">@style/MoreKeysKeyboardView.KLP</item>
@@ -98,6 +99,11 @@
         <item name="iconEmojiCategory9Tab">@drawable/ic_emoji_flags_holo_dark</item>
         <item name="iconEmojiCategory10Tab">@drawable/ic_emoji_emoticons_holo_dark</item>
     </style>
+    <style
+            name="ClipboardHistoryView.KLP"
+            parent="ClipboardHistoryView.ICS"
+            >
+    </style>
     <style
         name="MoreKeysKeyboard.KLP"
         parent="Keyboard.KLP"

app/src/main/res/values/themes-lxx-dark-amoled.xml

@@ -28,6 +28,7 @@
         <item name="keyboardViewStyle">@style/KeyboardView.LXX_Dark_Amoled</item>
         <item name="mainKeyboardViewStyle">@style/MainKeyboardView.LXX_Dark_Amoled</item>
         <item name="emojiPalettesViewStyle">@style/EmojiPalettesView.LXX_Dark_Amoled</item>
+        <item name="clipboardHistoryViewStyle">@style/ClipboardHistoryView.LXX_Dark_Amoled</item>
         <item name="moreKeysKeyboardViewStyle">@style/MoreKeysKeyboardView.LXX_Dark_Amoled</item>
         <item name="suggestionStripViewStyle">@style/SuggestionStripView.LXX_Dark_Amoled</item>
     </style>
@@ -65,6 +66,14 @@
         <item name="keyBackground">@drawable/btn_keyboard_key_lxx_dark_amoled</item>
     </style>
 
+    <style
+            name="ClipboardHistoryView.LXX_Dark_Amoled"
+            parent="ClipboardHistoryView.LXX_Dark"
+    >
+        <item name="android:background">@color/background_amoled_black</item>
+        <item name="keyBackground">@drawable/btn_keyboard_key_lxx_dark_amoled</item>
+    </style>
+
     <style
         name="MoreKeysKeyboardView.LXX_Dark_Amoled"
         parent="MoreKeysKeyboardView.LXX_Dark"

app/src/main/res/values/themes-lxx-dark-border.xml

@@ -26,6 +26,7 @@
         <item name="keyboardViewStyle">@style/KeyboardView.LXX_Dark_Border</item>
         <item name="mainKeyboardViewStyle">@style/MainKeyboardView.LXX_Dark_Border</item>
         <item name="emojiPalettesViewStyle">@style/EmojiPalettesView.LXX_Dark_Border</item>
+        <item name="clipboardHistoryViewStyle">@style/ClipboardHistoryView.LXX_Dark_Border</item>
         <item name="moreKeysKeyboardViewStyle">@style/MoreKeysKeyboardView.LXX_Dark_Border</item>
         <item name="suggestionStripViewStyle">@style/SuggestionStripView.LXX_Dark_Border</item>
     </style>
@@ -65,6 +66,14 @@
         <item name="spacebarBackground">@drawable/btn_keyboard_key_lxx_dark_border</item>
     </style>
 
+    <style
+        name="ClipboardHistoryView.LXX_Dark_Border"
+        parent="ClipboardHistoryView.LXX_Dark">
+        <item name="android:background">@drawable/keyboard_background_lxx_dark_border</item>
+        <item name="keyBackground">@drawable/btn_keyboard_key_lxx_dark_border</item>
+        <item name="functionalKeyBackground">@drawable/btn_keyboard_key_functional_lxx_dark_border</item>
+    </style>
+
     <style
         name="MoreKeysKeyboardView.LXX_Dark_Border"
         parent="MoreKeysKeyboardView.LXX_Dark">

app/src/main/res/values/themes-lxx-dark.xml

@@ -28,6 +28,7 @@
         <item name="keyboardViewStyle">@style/KeyboardView.LXX_Dark</item>
         <item name="mainKeyboardViewStyle">@style/MainKeyboardView.LXX_Dark</item>
         <item name="emojiPalettesViewStyle">@style/EmojiPalettesView.LXX_Dark</item>
+        <item name="clipboardHistoryViewStyle">@style/ClipboardHistoryView.LXX_Dark</item>
         <item name="moreKeysKeyboardStyle">@style/MoreKeysKeyboard.LXX_Dark</item>
         <item name="moreKeysKeyboardViewStyle">@style/MoreKeysKeyboardView.LXX_Dark</item>
         <item name="moreKeysKeyboardViewForActionStyle">@style/MoreKeysKeyboardView.LXX_Dark.Action</item>
@@ -99,6 +100,13 @@
         <item name="iconEmojiCategory9Tab">@drawable/ic_emoji_flags_lxx_dark</item>
         <item name="iconEmojiCategory10Tab">@drawable/ic_emoji_emoticons_lxx_dark</item>
     </style>
+    <style
+            name="ClipboardHistoryView.LXX_Dark"
+            parent="MainKeyboardView.LXX_Dark"
+            >
+        <item name="iconPinnedClip">@drawable/ic_clipboard_pin_lxx_dark</item>
+        <item name="dividerBackground">@color/emoji_tab_page_indicator_background_lxx_dark</item>
+    </style>
     <style
         name="MoreKeysKeyboard.LXX_Dark"
         parent="Keyboard.LXX_Dark"

app/src/main/res/values/themes-lxx-light-border.xml

@@ -25,6 +25,7 @@
         <item name="keyboardViewStyle">@style/KeyboardView.LXX_Light_Border</item>
         <item name="mainKeyboardViewStyle">@style/MainKeyboardView.LXX_Light_Border</item>
         <item name="emojiPalettesViewStyle">@style/EmojiPalettesView.LXX_Light_Border</item>
+        <item name="clipboardHistoryViewStyle">@style/ClipboardHistoryView.LXX_Light_Border</item>
         <item name="moreKeysKeyboardViewStyle">@style/MoreKeysKeyboardView.LXX_Light_Border</item>
         <item name="suggestionStripViewStyle">@style/SuggestionStripView.LXX_Light_Border</item>
     </style>
@@ -62,6 +63,14 @@
         <item name="spacebarBackground">@drawable/btn_keyboard_key_lxx_light_border</item>
     </style>
 
+    <style
+        name="ClipboardHistoryView.LXX_Light_Border"
+        parent="ClipboardHistoryView.LXX_Light">
+        <item name="android:background">@drawable/keyboard_background_lxx_light_border</item>
+        <item name="keyBackground">@drawable/btn_keyboard_key_lxx_light_border</item>
+        <item name="functionalKeyBackground">@drawable/btn_keyboard_key_functional_lxx_light_border</item>
+    </style>
+
     <style
         name="MoreKeysKeyboardView.LXX_Light_Border"
         parent="MoreKeysKeyboardView.LXX_Light">

app/src/main/res/values/themes-lxx-light.xml

@@ -25,6 +25,7 @@
         <item name="keyboardViewStyle">@style/KeyboardView.LXX_Light</item>
         <item name="mainKeyboardViewStyle">@style/MainKeyboardView.LXX_Light</item>
         <item name="emojiPalettesViewStyle">@style/EmojiPalettesView.LXX_Light</item>
+        <item name="clipboardHistoryViewStyle">@style/ClipboardHistoryView.LXX_Light</item>
         <item name="moreKeysKeyboardStyle">@style/MoreKeysKeyboard.LXX_Light</item>
         <item name="moreKeysKeyboardViewStyle">@style/MoreKeysKeyboardView.LXX_Light</item>
         <item name="moreKeysKeyboardViewForActionStyle">@style/MoreKeysKeyboardView.LXX_Light.Action</item>
@@ -96,6 +97,13 @@
         <item name="iconEmojiCategory9Tab">@drawable/ic_emoji_flags_lxx_light</item>
         <item name="iconEmojiCategory10Tab">@drawable/ic_emoji_emoticons_lxx_light</item>
     </style>
+    <style
+            name="ClipboardHistoryView.LXX_Light"
+            parent="MainKeyboardView.LXX_Light"
+            >
+        <item name="iconPinnedClip">@drawable/ic_clipboard_pin_lxx_light</item>
+        <item name="dividerBackground">@color/emoji_tab_page_indicator_background_lxx_light</item>
+    </style>
     <style
         name="MoreKeysKeyboard.LXX_Light"
         parent="Keyboard.LXX_Light"

app/src/main/res/xml/key_styles_navigate_more_keys.xml

@@ -26,61 +26,61 @@
             <key-style
                 latin:styleName="navigateNextMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!text/keyspec_action_next" />
+                latin:moreKeys="!text/keyspec_clipboard_action_key,!text/keyspec_action_next" />
             <key-style
                 latin:styleName="navigatePreviousMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!text/keyspec_action_previous" />
+                latin:moreKeys="!text/keyspec_action_previous,!text/keyspec_clipboard_action_key" />
             <key-style
                 latin:styleName="navigatePreviousNextMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!fixedColumnOrder!2,!needsDividers!,!text/keyspec_action_previous,!text/keyspec_action_next" />
+                latin:moreKeys="!fixedColumnOrder!3,!needsDividers!,!text/keyspec_action_previous,!text/keyspec_clipboard_action_key,!text/keyspec_action_next" />
             <key-style
                 latin:styleName="navigateEmojiMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!text/keyspec_emoji_action_key" />
+                latin:moreKeys="!text/keyspec_clipboard_action_key,!text/keyspec_emoji_action_key" />
             <key-style
                 latin:styleName="navigateEmojiNextMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!fixedColumnOrder!2,!needsDividers!,!text/keyspec_emoji_action_key,!text/keyspec_action_next" />
+                latin:moreKeys="!fixedColumnOrder!3,!needsDividers!,!text/keyspec_clipboard_action_key,!text/keyspec_emoji_action_key,!text/keyspec_action_next" />
             <key-style
                 latin:styleName="navigateEmojiPreviousMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!fixedColumnOrder!2,!needsDividers!,!text/keyspec_emoji_action_key,!text/keyspec_action_previous" />
+                latin:moreKeys="!fixedColumnOrder!3,!needsDividers!,!text/keyspec_action_previous,!text/keyspec_clipboard_action_key,!text/keyspec_emoji_action_key" />
             <key-style
                 latin:styleName="navigateEmojiPreviousNextMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!fixedColumnOrder!3,!needsDividers!,!text/keyspec_emoji_action_key,!text/keyspec_action_previous,!text/keyspec_action_next" />
+                latin:moreKeys="!fixedColumnOrder!4,!needsDividers!,!text/keyspec_action_previous,!text/keyspec_clipboard_action_key,!text/keyspec_emoji_action_key,!text/keyspec_action_next" />
         </case>
         <default>
             <key-style
                 latin:styleName="navigateNextMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!icon/next_key|!code/key_action_next" />
+                latin:moreKeys="!text/keyspec_clipboard_action_key,!icon/next_key|!code/key_action_next" />
             <key-style
                 latin:styleName="navigatePreviousMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!icon/previous_key|!code/key_action_previous" />
+                latin:moreKeys="!icon/previous_key|!code/key_action_previous,!text/keyspec_clipboard_action_key" />
             <key-style
                 latin:styleName="navigatePreviousNextMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!fixedColumnOrder!2,!needsDividers!,!icon/previous_key|!code/key_action_previous,!icon/next_key|!code/key_action_next" />
+                latin:moreKeys="!fixedColumnOrder!3,!needsDividers!,!icon/previous_key|!code/key_action_previous,!text/keyspec_clipboard_action_key,!icon/next_key|!code/key_action_next" />
             <key-style
                 latin:styleName="navigateEmojiMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!text/keyspec_emoji_action_key" />
+                latin:moreKeys="!text/keyspec_clipboard_action_key,!text/keyspec_emoji_action_key" />
             <key-style
                 latin:styleName="navigateEmojiNextMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!fixedColumnOrder!2,!needsDividers!,!text/keyspec_emoji_action_key,!icon/next_key|!code/key_action_next" />
+                latin:moreKeys="!fixedColumnOrder!3,!needsDividers!,!text/keyspec_clipboard_action_key,!text/keyspec_emoji_action_key,!icon/next_key|!code/key_action_next" />
             <key-style
                 latin:styleName="navigateEmojiPreviousMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!fixedColumnOrder!2,!needsDividers!,!text/keyspec_emoji_action_key,!icon/previous_key|!code/key_action_previous" />
+                latin:moreKeys="!fixedColumnOrder!3,!needsDividers!,!icon/previous_key|!code/key_action_previous,!text/keyspec_clipboard_action_key,!text/keyspec_emoji_action_key" />
             <key-style
                 latin:styleName="navigateEmojiPreviousNextMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint|preserveCase"
-                latin:moreKeys="!fixedColumnOrder!3,!needsDividers!,!text/keyspec_emoji_action_key,!icon/previous_key|!code/key_action_previous,!icon/next_key|!code/key_action_next" />
+                latin:moreKeys="!fixedColumnOrder!4,!needsDividers!,!icon/previous_key|!code/key_action_previous,!text/keyspec_clipboard_action_key,!text/keyspec_emoji_action_key,!icon/next_key|!code/key_action_next" />
         </default>
     </switch>
 </merge>

app/src/main/res/xml/key_styles_settings.xml

@@ -30,12 +30,41 @@
                 latin:styleName="settingsMoreKeysStyle"
                 latin:backgroundType="functional" />
         </case>
-        <!-- clobberSettingsKey="false" -->
+        <case
+            latin:emojiKeyEnabled="true"
+            latin:languageSwitchKeyEnabled="true"
+        >
+            <key-style
+                    latin:styleName="settingsMoreKeysStyle"
+                    latin:keyLabelFlags="hasPopupHint"
+                    latin:additionalMoreKeys="!text/keyspec_settings,!text/keyspec_clipboard_normal_key"
+                    latin:backgroundType="functional" />
+        </case>
+        <case
+            latin:emojiKeyEnabled="false"
+            latin:languageSwitchKeyEnabled="true"
+        >
+            <key-style
+                    latin:styleName="settingsMoreKeysStyle"
+                    latin:keyLabelFlags="hasPopupHint"
+                    latin:additionalMoreKeys="!text/keyspec_settings,!text/keyspec_clipboard_normal_key,!text/keyspec_emoji_normal_key"
+                    latin:backgroundType="functional" />
+        </case>
+        <case
+            latin:emojiKeyEnabled="true"
+            latin:languageSwitchKeyEnabled="false"
+        >
+            <key-style
+                    latin:styleName="settingsMoreKeysStyle"
+                    latin:keyLabelFlags="hasPopupHint"
+                    latin:additionalMoreKeys="!text/keyspec_settings,!icon/language_switch_key|!code/key_language_switch,!text/keyspec_clipboard_normal_key"
+                    latin:backgroundType="functional" />
+        </case>
         <default>
             <key-style
                 latin:styleName="settingsMoreKeysStyle"
                 latin:keyLabelFlags="hasPopupHint"
-                latin:additionalMoreKeys="!text/keyspec_settings,!icon/language_switch_key|!code/key_language_switch,!text/keyspec_emoji_normal_key"
+                latin:additionalMoreKeys="!text/keyspec_settings,!icon/language_switch_key|!code/key_language_switch,!text/keyspec_clipboard_normal_key,!text/keyspec_emoji_normal_key"
                 latin:backgroundType="functional" />
         </default>
     </switch>