Initial Contribution

1 files changed, 161 insertions, 0 deletions

diff --git a/src/com/android/calculator2/Calculator.java b/src/com/android/calculator2/Calculator.java
new file mode 100644
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+++ b/src/com/android/calculator2/Calculator.java
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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.util.Config;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.Window;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ListView;
+import android.content.res.Configuration;
+
+public class Calculator extends Activity {
+    EventListener mListener = new EventListener();
+    private CalculatorDisplay mDisplay;
+    private Persist mPersist;
+    private History mHistory;
+    private Logic mLogic;
+    private PanelSwitcher mPanelSwitcher;
+
+    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 = DEBUG ? Config.LOGD : Config.LOGV;
+
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        requestWindowFeature(Window.FEATURE_NO_TITLE);
+        setContentView(R.layout.main);
+
+        mPersist = new Persist(this);
+        mHistory = mPersist.history;
+
+        mDisplay = (CalculatorDisplay) findViewById(R.id.display);
+
+        mLogic = new Logic(this, mHistory, mDisplay, (Button) findViewById(R.id.equal));
+        HistoryAdapter historyAdapter = new HistoryAdapter(this, mHistory, mLogic);
+        mHistory.setObserver(historyAdapter);
+        View view;
+        mPanelSwitcher = (PanelSwitcher) findViewById(R.id.panelswitch);
+                                       
+        mListener.setHandler(mLogic, mPanelSwitcher);
+
+        mDisplay.setOnKeyListener(mListener);
+
+
+        if ((view = findViewById(R.id.del)) != null) {
+            view.setOnClickListener(mListener);
+            view.setOnLongClickListener(mListener);
+        }
+        /*
+        if ((view = findViewById(R.id.clear)) != null) {
+            view.setOnClickListener(mListener);
+        }
+        */
+
+        /*
+        ListView historyPad = (ListView) findViewById(R.id.historyPad);
+        if (historyPad != null) {
+            historyPad.setAdapter(historyAdapter);
+        }
+        */
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        super.onCreateOptionsMenu(menu);
+        MenuItem item;
+        
+        item = menu.add(0, CMD_CLEAR_HISTORY, 0, R.string.clear_history);
+        item.setIcon(R.drawable.clear_history);
+        
+        item = menu.add(0, CMD_ADVANCED_PANEL, 0, R.string.advanced);
+        item.setIcon(R.drawable.advanced);
+        
+        item = menu.add(0, CMD_BASIC_PANEL, 0, R.string.basic);
+        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 icicle) {
+        // as work-around for ClassCastException in TextView on restart
+        // avoid calling superclass, to keep icicle empty
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        mLogic.updateHistory();
+        mPersist.save();
+    }
+
+    static void log(String message) {
+        if (LOG_ENABLED) {
+            Log.v(LOG_TAG, message);
+        }
+    }
+}