1 files changed, 161 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/keyboard/internal/EmojiPageKeyboardView.java b/java/src/com/android/inputmethod/keyboard/internal/EmojiPageKeyboardView.java
new file mode 100644
index 000000000..5a996ff53
--- /dev/null
+++ b/java/src/com/android/inputmethod/keyboard/internal/EmojiPageKeyboardView.java
@@ -0,0 +1,161 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.inputmethod.keyboard.internal;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.GestureDetector;
+import android.view.MotionEvent;
+
+import com.android.inputmethod.keyboard.Key;
+import com.android.inputmethod.keyboard.KeyDetector;
+import com.android.inputmethod.keyboard.Keyboard;
+import com.android.inputmethod.keyboard.KeyboardView;
+import com.android.inputmethod.keyboard.PointerTracker;
+import com.android.inputmethod.latin.R;
+
+/**
+ * This is an extended {@link KeyboardView} class that hosts an emoji page keyboard.
+ * Multi-touch unsupported. No {@link PointerTracker}s. No gesture support.
+ */
+// TODO: Implement key popup preview.
+public final class EmojiPageKeyboardView extends KeyboardView implements
+        GestureDetector.OnGestureListener {
+    public interface OnKeyClickListener {
+        public void onKeyClick(Key key);
+    }
+
+    private static final OnKeyClickListener EMPTY_LISTENER = new OnKeyClickListener() {
+        @Override
+        public void onKeyClick(final Key key) {}
+    };
+
+    private OnKeyClickListener mListener = EMPTY_LISTENER;
+    private final KeyDetector mKeyDetector = new KeyDetector(0.0f /*keyHysteresisDistance */);
+    private final GestureDetector mGestureDetector;
+
+    public EmojiPageKeyboardView(final Context context, final AttributeSet attrs) {
+        this(context, attrs, R.attr.keyboardViewStyle);
+    }
+
+    public EmojiPageKeyboardView(final Context context, final AttributeSet attrs,
+            final int defStyle) {
+        super(context, attrs, defStyle);
+        mGestureDetector = new GestureDetector(context, this);
+        mGestureDetector.setIsLongpressEnabled(false /* isLongpressEnabled */);
+    }
+
+    public void setOnKeyClickListener(final OnKeyClickListener listener) {
+        mListener = listener;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setKeyboard(final Keyboard keyboard) {
+        super.setKeyboard(keyboard);
+        mKeyDetector.setKeyboard(keyboard, 0 /* correctionX */, 0 /* correctionY */);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean onTouchEvent(final MotionEvent e) {
+        if (mGestureDetector.onTouchEvent(e)) {
+            return true;
+        }
+        final Key key = getKey(e);
+        if (key != null && key != mCurrentKey) {
+            releaseCurrentKey();
+        }
+        return true;
+    }
+
+    // {@link GestureDetector#OnGestureListener} methods.
+    private Key mCurrentKey;
+
+    private Key getKey(final MotionEvent e) {
+        final int index = e.getActionIndex();
+        final int x = (int)e.getX(index);
+        final int y = (int)e.getY(index);
+        return mKeyDetector.detectHitKey(x, y);
+    }
+
+    public void releaseCurrentKey() {
+        final Key currentKey = mCurrentKey;
+        if (currentKey == null) {
+            return;
+        }
+        currentKey.onReleased();
+        invalidateKey(currentKey);
+        mCurrentKey = null;
+    }
+
+    @Override
+    public boolean onDown(final MotionEvent e) {
+        final Key key = getKey(e);
+        releaseCurrentKey();
+        mCurrentKey = key;
+        if (key == null) {
+            return false;
+        }
+        // TODO: May call {@link KeyboardActionListener#onPressKey(int,int,boolean)}.
+        key.onPressed();
+        invalidateKey(key);
+        return false;
+    }
+
+    @Override
+    public void onShowPress(final MotionEvent e) {
+        // User feedback is done at {@link #onDown(MotionEvent)}.
+    }
+
+    @Override
+    public boolean onSingleTapUp(final MotionEvent e) {
+        final Key key = getKey(e);
+        releaseCurrentKey();
+        if (key == null) {
+            return false;
+        }
+        // TODO: May call {@link KeyboardActionListener#onReleaseKey(int,boolean)}.
+        key.onReleased();
+        invalidateKey(key);
+        mListener.onKeyClick(key);
+        return true;
+    }
+
+    @Override
+    public boolean onScroll(final MotionEvent e1, final MotionEvent e2, final float distanceX,
+           final float distanceY) {
+        releaseCurrentKey();
+        return false;
+    }
+
+    @Override
+    public boolean onFling(final MotionEvent e1, final MotionEvent e2, final float velocityX,
+            final float velocityY) {
+        releaseCurrentKey();
+        return false;
+    }
+
+    @Override
+    public void onLongPress(final MotionEvent e) {
+        // Long press detection of {@link #mGestureDetector} is disabled and not used.
+    }
+}