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/*
* Copyright (C) 2008 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.calculator2;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.WindowManager;
public class Calculator extends Activity implements PanelSwitcher.Listener, Logic.Listener {
EventListener mListener = new EventListener();
private CalculatorDisplay mDisplay;
private Persist mPersist;
private History mHistory;
private Logic mLogic;
private PanelSwitcher mPanelSwitcher;
private View mClearButton;
private View mBackspaceButton;
private static final int CMD_CLEAR_HISTORY = 1;
private static final int CMD_BASIC_PANEL = 2;
private static final int CMD_ADVANCED_PANEL = 3;
static final int BASIC_PANEL = 0;
static final int ADVANCED_PANEL = 1;
private static final String LOG_TAG = "Calculator";
private static final boolean DEBUG = false;
private static final boolean LOG_ENABLED = false;
private static final String STATE_CURRENT_VIEW = "state-current-view";
@Override
public void onCreate(Bundle state) {
super.onCreate(state);
// Disable IME for this application
getWindow().setFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
setContentView(R.layout.main);
mPersist = new Persist(this);
mPersist.load();
mHistory = mPersist.history;
mDisplay = (CalculatorDisplay) findViewById(R.id.display);
mClearButton = findViewById(R.id.clear);
mClearButton.setOnClickListener(mListener);
mClearButton.setOnLongClickListener(mListener);
mBackspaceButton = findViewById(R.id.del);
mBackspaceButton.setOnClickListener(mListener);
mBackspaceButton.setOnLongClickListener(mListener);
mLogic = new Logic(this, mHistory, mDisplay);
mLogic.setListener(this);
mLogic.setDeleteMode(mPersist.getDeleteMode());
mLogic.setLineLength(mDisplay.getMaxDigits());
HistoryAdapter historyAdapter = new HistoryAdapter(this, mHistory, mLogic);
mHistory.setObserver(historyAdapter);
mPanelSwitcher = (PanelSwitcher) findViewById(R.id.panelswitch);
if (mPanelSwitcher != null) {
mPanelSwitcher.setCurrentIndex(state==null ? 0 : state.getInt(STATE_CURRENT_VIEW, 0));
mPanelSwitcher.setListener(this);
}
mListener.setHandler(mLogic, mPanelSwitcher);
mDisplay.setOnKeyListener(mListener);
setOnClickListener(R.id.digit0);
setOnClickListener(R.id.digit1);
setOnClickListener(R.id.digit2);
setOnClickListener(R.id.digit3);
setOnClickListener(R.id.digit4);
setOnClickListener(R.id.digit5);
setOnClickListener(R.id.digit6);
setOnClickListener(R.id.digit7);
setOnClickListener(R.id.digit8);
setOnClickListener(R.id.digit9);
setOnClickListener(R.id.dot);
setOnClickListener(R.id.plus);
setOnClickListener(R.id.minus);
setOnClickListener(R.id.div);
setOnClickListener(R.id.mul);
setOnClickListener(R.id.leftParen);
setOnClickListener(R.id.rightParen);
setOnClickListener(R.id.equal);
setOnClickListener(R.id.sin);
setOnClickListener(R.id.ln);
setOnClickListener(R.id.cos);
setOnClickListener(R.id.lg);
setOnClickListener(R.id.tan);
setOnClickListener(R.id.e);
setOnClickListener(R.id.pi);
setOnClickListener(R.id.power);
setOnClickListener(R.id.factorial);
setOnClickListener(R.id.sqrt);
mLogic.resumeWithHistory();
updateDeleteMode();
}
private void updateDeleteMode() {
if (mLogic.getDeleteMode() == Logic.DELETE_MODE_BACKSPACE) {
mClearButton.setVisibility(View.GONE);
mBackspaceButton.setVisibility(View.VISIBLE);
} else {
mClearButton.setVisibility(View.VISIBLE);
mBackspaceButton.setVisibility(View.GONE);
}
}
private void setOnClickListener(int id) {
findViewById(id).setOnClickListener(mListener);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
MenuItem item;
item = menu.add(0, CMD_CLEAR_HISTORY, 0, R.string.clear_history);
item.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
item.setIcon(R.drawable.clear_history);
item = menu.add(0, CMD_ADVANCED_PANEL, 0, R.string.advanced);
item.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
item.setIcon(R.drawable.advanced);
item = menu.add(0, CMD_BASIC_PANEL, 0, R.string.basic);
item.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
item.setIcon(R.drawable.simple);
return true;
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
menu.findItem(CMD_BASIC_PANEL).setVisible(mPanelSwitcher != null &&
mPanelSwitcher.getCurrentIndex() == ADVANCED_PANEL);
menu.findItem(CMD_ADVANCED_PANEL).setVisible(mPanelSwitcher != null &&
mPanelSwitcher.getCurrentIndex() == BASIC_PANEL);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case CMD_CLEAR_HISTORY:
mHistory.clear();
break;
case CMD_BASIC_PANEL:
if (mPanelSwitcher != null &&
mPanelSwitcher.getCurrentIndex() == ADVANCED_PANEL) {
mPanelSwitcher.moveRight();
}
break;
case CMD_ADVANCED_PANEL:
if (mPanelSwitcher != null &&
mPanelSwitcher.getCurrentIndex() == BASIC_PANEL) {
mPanelSwitcher.moveLeft();
}
break;
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onSaveInstanceState(Bundle state) {
super.onSaveInstanceState(state);
if (mPanelSwitcher != null) {
state.putInt(STATE_CURRENT_VIEW, mPanelSwitcher.getCurrentIndex());
}
}
@Override
public void onPause() {
super.onPause();
mLogic.updateHistory();
mPersist.setDeleteMode(mLogic.getDeleteMode());
mPersist.save();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent keyEvent) {
if (keyCode == KeyEvent.KEYCODE_BACK
&& mPanelSwitcher != null && mPanelSwitcher.getCurrentIndex() == ADVANCED_PANEL) {
mPanelSwitcher.moveRight();
return true;
} else {
return super.onKeyDown(keyCode, keyEvent);
}
}
static void log(String message) {
if (LOG_ENABLED) {
Log.v(LOG_TAG, message);
}
}
@Override
public void onChange() {
invalidateOptionsMenu();
}
@Override
public void onDeleteModeChange() {
updateDeleteMode();
}
}
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