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/*
********************************************************************************
* Copyright (c) 2012 Samsung Electronics, Inc.
* All rights reserved.
*
* This software is a confidential and proprietary information of Samsung
* Electronics, Inc. ("Confidential Information"). You shall not disclose such
* Confidential Information and shall use it only in accordance with the terms
* of the license agreement you entered into with Samsung Electronics.
********************************************************************************
*/
package us.minak;
import java.util.LinkedList;
import java.util.Locale;
import java.util.Queue;
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.Button;
import android.widget.RelativeLayout;
/**
* Represents the container for the drawing space and the two side panels.
*/
public class IMEView extends RelativeLayout {
private StringReciever mOnCharacterEnteredListener;
private OnBackspacePressedListener mOnBackspacePressedListener;
private Button mShiftButton;
private ShiftState mShiftState = ShiftState.OFF;
private final Queue<Character> mSymbolsQueue = new LinkedList<Character>();
private enum ShiftState {
OFF, ON, CAPS_LOCK
};
public IMEView(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onFinishInflate() {
IMEGestureOverlayView drawingSpaceView = (IMEGestureOverlayView) findViewById(R.id.drawing_space);
drawingSpaceView.setOnGestureRecognizedListener(new StringReciever() {
@Override
public void putString(String character) {
enterCharacter(character);
}
});
mShiftButton = (Button) findViewById(R.id.shift_btn);
mShiftButton.setOnClickListener(mButtonClickListener);
mShiftButton.setOnLongClickListener(mButtonLongClickListener);
final Button backspaceButton = (Button) findViewById(R.id.backspace_btn);
backspaceButton.setOnClickListener(mButtonClickListener);
backspaceButton.setOnLongClickListener(mButtonLongClickListener);
final Button spaceButton = (Button) findViewById(R.id.space_btn);
spaceButton.setOnClickListener(mButtonClickListener);
spaceButton.setOnLongClickListener(mButtonLongClickListener);
}
public void setOnCharacterEnteredListener(StringReciever onCharacterEnteredListener) {
mOnCharacterEnteredListener = onCharacterEnteredListener;
}
public void setOnBackspacePressedListener(OnBackspacePressedListener onBackspacePressedListener) {
mOnBackspacePressedListener = onBackspacePressedListener;
}
public Queue<Character> getSymbolsQueue() {
return mSymbolsQueue;
}
/**
* Listener handling pressing all buttons.
*/
private final OnClickListener mButtonClickListener = new OnClickListener() {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.shift_btn:
shift();
break;
case R.id.backspace_btn:
mOnBackspacePressedListener.backspacePressed(false);
break;
case R.id.space_btn:
mOnCharacterEnteredListener.putString(" ");
break;
default:
throw new IllegalArgumentException();
}
}
};
/**
* Listener handling long pressing all buttons.
*/
private final OnLongClickListener mButtonLongClickListener = new OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
switch (v.getId()) {
case R.id.shift_btn:
break;
case R.id.backspace_btn:
mOnBackspacePressedListener.backspacePressed(true);
return true;
case R.id.space_btn:
break;
default:
throw new IllegalArgumentException();
}
return false;
}
};
/**
* Changes shift state to the next one (OFF -> ON -> CAPS LOCK).
*/
private void shift() {
switch (mShiftState) {
case OFF:
mShiftState = ShiftState.ON;
//mShiftButton.setBackgroundResource(R.drawable.shift_on);
break;
case ON:
mShiftState = ShiftState.CAPS_LOCK;
//mShiftButton.setBackgroundResource(R.drawable.shift_caps_lock);
break;
case CAPS_LOCK:
mShiftState = ShiftState.OFF;
//mShiftButton.setBackgroundResource(R.drawable.shift_off);
break;
default:
throw new IllegalArgumentException();
}
}
/**
* Passes the given character to the input service.
*
* @param character
* The character to enter
*/
private void enterCharacter(String character) {
switch (mShiftState) {
case OFF:
mOnCharacterEnteredListener.putString(character);
break;
case ON:
mOnCharacterEnteredListener.putString(character.toUpperCase(Locale.ENGLISH));
shift();
break;
case CAPS_LOCK:
mOnCharacterEnteredListener.putString(character.toUpperCase(Locale.ENGLISH));
break;
default:
throw new IllegalArgumentException();
}
}
}
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