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/*
* 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.dreams.phototable;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
/**
* Keyboard event dispatcher for Photo Table.
*/
public class KeyboardInterpreter {
private static final String TAG = "DPadInterpreter";
private static final boolean DEBUG = false;
private final PhotoTable mTable;
private final long mBounce;
private long mLastDeckNavigation;
public KeyboardInterpreter(PhotoTable table) {
mBounce = 2000; // TODO: remove this once latencies in lower layers are removed.
mTable = table;
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
final View focus = mTable.getFocus();
boolean consumed = true;
if (mTable.hasSelection()) {
switch (keyCode) {
case KeyEvent.KEYCODE_ENTER:
case KeyEvent.KEYCODE_DPAD_CENTER:
case KeyEvent.KEYCODE_ESCAPE:
mTable.setFocus(mTable.getSelection());
mTable.clearSelection();
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
case KeyEvent.KEYCODE_L:
if ((System.currentTimeMillis() - mLastDeckNavigation) > mBounce) {
mLastDeckNavigation = System.currentTimeMillis();
mTable.selectPrevious();
}
break;
case KeyEvent.KEYCODE_DPAD_LEFT:
case KeyEvent.KEYCODE_H:
if ((System.currentTimeMillis() - mLastDeckNavigation) > mBounce) {
mLastDeckNavigation = System.currentTimeMillis();
mTable.selectNext();
}
break;
default:
if (DEBUG) Log.d(TAG, "dropped unexpected: " + keyCode);
consumed = false;
// give the user some more time to figure it out
mTable.refreshSelection();
break;
}
} else {
switch (keyCode) {
case KeyEvent.KEYCODE_ENTER:
case KeyEvent.KEYCODE_DPAD_CENTER:
if (mTable.hasFocus()) {
mTable.setSelection(mTable.getFocus());
mTable.clearFocus();
} else {
mTable.setDefaultFocus();
}
break;
case KeyEvent.KEYCODE_DEL:
case KeyEvent.KEYCODE_X:
if (mTable.hasFocus()) {
mTable.fling(mTable.getFocus());
}
break;
case KeyEvent.KEYCODE_DPAD_UP:
case KeyEvent.KEYCODE_K:
mTable.moveFocus(focus, 0f);
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
case KeyEvent.KEYCODE_L:
mTable.moveFocus(focus, 90f);
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
case KeyEvent.KEYCODE_J:
mTable.moveFocus(focus, 180f);
break;
case KeyEvent.KEYCODE_DPAD_LEFT:
case KeyEvent.KEYCODE_H:
mTable.moveFocus(focus, 270f);
break;
default:
if (DEBUG) Log.d(TAG, "dropped unexpected: " + keyCode);
consumed = false;
// give the user some more time to figure it out
mTable.refreshFocus();
break;
}
}
return consumed;
}
}
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