Add com.android.inputmethod.latin.suggestions package

Change-Id: If4b823768ab9c073625da3034ecc8091be1df230

1 files changed, 238 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/suggestions/MoreSuggestionsView.java b/java/src/com/android/inputmethod/latin/suggestions/MoreSuggestionsView.java
new file mode 100644
index 000000000..b5f67ace0
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/suggestions/MoreSuggestionsView.java
@@ -0,0 +1,238 @@
+/*
+ * Copyright (C) 2011 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.latin.suggestions;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.util.AttributeSet;
+import android.view.Gravity;
+import android.view.MotionEvent;
+import android.view.View;
+import android.widget.PopupWindow;
+
+import com.android.inputmethod.keyboard.KeyDetector;
+import com.android.inputmethod.keyboard.Keyboard;
+import com.android.inputmethod.keyboard.KeyboardActionListener;
+import com.android.inputmethod.keyboard.KeyboardView;
+import com.android.inputmethod.keyboard.MoreKeysDetector;
+import com.android.inputmethod.keyboard.MoreKeysPanel;
+import com.android.inputmethod.keyboard.PointerTracker;
+import com.android.inputmethod.keyboard.PointerTracker.DrawingProxy;
+import com.android.inputmethod.keyboard.PointerTracker.KeyEventHandler;
+import com.android.inputmethod.keyboard.PointerTracker.TimerProxy;
+import com.android.inputmethod.latin.R;
+
+/**
+ * A view that renders a virtual {@link MoreSuggestions}. It handles rendering of keys and detecting
+ * key presses and touch movements.
+ */
+public class MoreSuggestionsView extends KeyboardView implements MoreKeysPanel {
+    private final int[] mCoordinates = new int[2];
+
+    private final KeyDetector mModalPanelKeyDetector;
+    private final KeyDetector mSlidingPanelKeyDetector;
+
+    private Controller mController;
+    private KeyboardActionListener mListener;
+    private int mOriginX;
+    private int mOriginY;
+
+    private static final TimerProxy EMPTY_TIMER_PROXY = new TimerProxy.Adapter();
+
+    private final KeyboardActionListener mSuggestionsPaneListener =
+            new KeyboardActionListener.Adapter() {
+        @Override
+        public void onPress(int primaryCode, boolean withSliding) {
+            mListener.onPress(primaryCode, withSliding);
+        }
+
+        @Override
+        public void onRelease(int primaryCode, boolean withSliding) {
+            mListener.onRelease(primaryCode, withSliding);
+        }
+
+        @Override
+        public void onCodeInput(int primaryCode, int[] keyCodes, int x, int y) {
+            final int index = primaryCode - MoreSuggestions.SUGGESTION_CODE_BASE;
+            if (index >= 0 && index < SuggestionsView.MAX_SUGGESTIONS) {
+                mListener.onCustomRequest(index);
+            }
+        }
+
+        @Override
+        public void onCancelInput() {
+            mListener.onCancelInput();
+        }
+    };
+
+    public MoreSuggestionsView(Context context, AttributeSet attrs) {
+        this(context, attrs, R.attr.moreSuggestionsViewStyle);
+    }
+
+    public MoreSuggestionsView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+
+        final Resources res = context.getResources();
+        mModalPanelKeyDetector = new KeyDetector(/* keyHysteresisDistance */ 0);
+        mSlidingPanelKeyDetector = new MoreKeysDetector(
+                res.getDimension(R.dimen.more_suggestions_slide_allowance));
+        setKeyPreviewPopupEnabled(false, 0);
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        final Keyboard keyboard = getKeyboard();
+        if (keyboard != null) {
+            final int width = keyboard.mOccupiedWidth + getPaddingLeft() + getPaddingRight();
+            final int height = keyboard.mOccupiedHeight + getPaddingTop() + getPaddingBottom();
+            setMeasuredDimension(width, height);
+        } else {
+            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        }
+    }
+
+    @Override
+    public void setKeyboard(Keyboard keyboard) {
+        super.setKeyboard(keyboard);
+        mModalPanelKeyDetector.setKeyboard(keyboard, -getPaddingLeft(), -getPaddingTop());
+        mSlidingPanelKeyDetector.setKeyboard(keyboard, -getPaddingLeft(),
+                -getPaddingTop() + mVerticalCorrection);
+    }
+
+    @Override
+    public KeyDetector getKeyDetector() {
+        return mSlidingPanelKeyDetector;
+    }
+
+    @Override
+    public KeyboardActionListener getKeyboardActionListener() {
+        return mSuggestionsPaneListener;
+    }
+
+    @Override
+    public DrawingProxy getDrawingProxy() {
+        return this;
+    }
+
+    @Override
+    public TimerProxy getTimerProxy() {
+        return EMPTY_TIMER_PROXY;
+    }
+
+    @Override
+    public void setKeyPreviewPopupEnabled(boolean previewEnabled, int delay) {
+        // Suggestions pane needs no pop-up key preview displayed, so we pass always false with a
+        // delay of 0. The delay does not matter actually since the popup is not shown anyway.
+        super.setKeyPreviewPopupEnabled(false, 0);
+    }
+
+    @Override
+    public void setShifted(boolean shifted) {
+        // Nothing to do with.
+    }
+
+    @Override
+    public void showMoreKeysPanel(View parentView, Controller controller, int pointX, int pointY,
+            PopupWindow window, KeyboardActionListener listener) {
+        mController = controller;
+        mListener = listener;
+        final View container = (View)getParent();
+        final MoreSuggestions pane = (MoreSuggestions)getKeyboard();
+
+        parentView.getLocationInWindow(mCoordinates);
+        final int paneLeft = pointX - (pane.mOccupiedWidth / 2) + parentView.getPaddingLeft();
+        final int x = wrapUp(Math.max(0, Math.min(paneLeft,
+                parentView.getWidth() - pane.mOccupiedWidth))
+                - container.getPaddingLeft() + mCoordinates[0],
+                container.getMeasuredWidth(), 0, parentView.getWidth());
+        final int y = pointY
+                - (container.getMeasuredHeight() - container.getPaddingBottom())
+                + parentView.getPaddingTop() + mCoordinates[1];
+
+        window.setContentView(container);
+        window.setWidth(container.getMeasuredWidth());
+        window.setHeight(container.getMeasuredHeight());
+        window.showAtLocation(parentView, Gravity.NO_GRAVITY, x, y);
+
+        mOriginX = x + container.getPaddingLeft() - mCoordinates[0];
+        mOriginY = y + container.getPaddingTop() - mCoordinates[1];
+    }
+
+    private static int wrapUp(int x, int width, int left, int right) {
+        if (x < left)
+            return left;
+        if (x + width > right)
+            return right - width;
+        return x;
+    }
+
+    private boolean mIsDismissing;
+
+    @Override
+    public boolean dismissMoreKeysPanel() {
+        if (mIsDismissing) return false;
+        mIsDismissing = true;
+        final boolean dismissed = mController.dismissMoreKeysPanel();
+        mIsDismissing = false;
+        return dismissed;
+    }
+
+    @Override
+    public int translateX(int x) {
+        return x - mOriginX;
+    }
+
+    @Override
+    public int translateY(int y) {
+        return y - mOriginY;
+    }
+
+    private final KeyEventHandler mModalPanelKeyEventHandler = new KeyEventHandler() {
+        @Override
+        public KeyDetector getKeyDetector() {
+            return mModalPanelKeyDetector;
+        }
+
+        @Override
+        public KeyboardActionListener getKeyboardActionListener() {
+            return mSuggestionsPaneListener;
+        }
+
+        @Override
+        public DrawingProxy getDrawingProxy() {
+            return MoreSuggestionsView.this;
+        }
+
+        @Override
+        public TimerProxy getTimerProxy() {
+            return EMPTY_TIMER_PROXY;
+        }
+    };
+
+    @Override
+    public boolean onTouchEvent(MotionEvent me) {
+        final int action = me.getAction();
+        final long eventTime = me.getEventTime();
+        final int index = me.getActionIndex();
+        final int id = me.getPointerId(index);
+        final PointerTracker tracker = PointerTracker.getPointerTracker(id, this);
+        final int x = (int)me.getX(index);
+        final int y = (int)me.getY(index);
+        tracker.processMotionEvent(action, x, y, eventTime, mModalPanelKeyEventHandler);
+        return true;
+    }
+}