I have been working on a port of JavaCC for Android. It is mainly an interface. I needed only to modify the original source to redirect output to a TextView. The point of this project is to rekindle my coding skills after years of dormancy, to actually finish a coding project, and to make a useful port of JavaCC that I can use to play around with AIDE. This project was actually made in part with AIDE. I am excited to read your opinion on my code regarding what I consider to be the most difficult portion of the code. I was able to modularize many portions of this UI package, but this class persisted to be difficult. Please feel free to ask any applicable questions.
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.text.Editable;
import android.text.InputType;
import android.text.TextWatcher;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.TextView;
public class MainActivity extends Activity {
public static Context context;
private String[] menuOptions = new String[] { "view license",
"view parameters", "run program", "view output" };
private Runnable[] menuOptionThreads = new Runnable[] { new Runnable() {
@Override
public void run() {
try {
println(getLicenseString().toString(), handler);
} catch (IOException e) {
println("Error reading license file.", handler);
}
scrolly.removeAllViews();
scrolly.addView(text);
}
}, new Runnable() {
@Override
public void run() {
scrolly.removeAllViews();
scrolly.addView(linear);
}
}, new Runnable() {
@Override
public void run() {
text.setText("");
scrolly.removeAllViews();
scrolly.addView(text);
new Run(handler, options, fPath, fOutPath);
}
}, new Runnable() {
@Override
public void run() {
scrolly.removeAllViews();
scrolly.addView(text);
}
} };
private TextView text;
private Handler handler = new Handler() {
@Override
public void handleMessage(Message message) {
final String messageString = message.getData().getString("print");
runOnUiThread(new Runnable() {
@Override
public void run() {
if (text == null)
return;
text.setText(text.getText() + messageString + "\n");
}
});
}
};
private static Option options[];
private static String fPath;
private static String fOutPath;
private ScrollView scrolly;
private LinearLayout linear;
private EditText path;
private EditText outPath;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
context = this;
Streams.error = new PrintStream(new Streams.ErrorStream(handler));
Streams.standard = new PrintStream(new Streams.StandardStream(handler));
LinearLayout rootView = new LinearLayout(this);
rootView.setOrientation(LinearLayout.VERTICAL);
scrolly = new ScrollView(this);
linear = new LinearLayout(this);
linear.setOrientation(LinearLayout.VERTICAL);
try {
fPath = getIntent().getDataString();
fPath = fPath.substring(fPath.indexOf("//") + 2);
} catch (NullPointerException e) {
fPath = "/";
}
text = new TextView(this);
options = Option.generateDefaultOptionsObjectsArray();
Button menuButton = new Button(this);
menuButton.setText("menu");
new AppMenu(context, menuOptions, menuButton, MainActivity.this,
menuOptionThreads);
Button fileSelectButton = new Button(this);
fileSelectButton.setText("file");
new FileSelect(context, new File("/").list(), fileSelectButton,
MainActivity.this, "/", false);
path = new EditText(this);
path.setText(fPath);
path.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence p1, int p2, int p3,
int p4) {
}
@Override
public void onTextChanged(CharSequence p1, int p2, int p3, int p4) {
}
@Override
public void afterTextChanged(Editable arg0) {
fPath = arg0.toString();
int dot = fPath.lastIndexOf(".");
if (dot > 0) outPath.setText(fPath.substring(0, dot));
}
});
outPath = new EditText(this);
outPath.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
int arg2, int arg3) {
// TODO Auto-generated method stub
}
@Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
fOutPath = arg0.toString();
}
});
LinearLayout outPathOuterView = new LinearLayout(this);
TextView outPathLabel = new TextView(this);
outPathLabel.setText(Option.OUTPUT_DIRECTORY_OPTION);
outPathOuterView.addView(outPathLabel);
outPathOuterView.addView(outPath);
linear.addView(outPathOuterView);
for (Option option : options)
linear.addView(generateViewForOption(option));
LinearLayout topLayout = new LinearLayout(this);
topLayout.addView(menuButton);
topLayout.addView(fileSelectButton);
topLayout.addView(path);
rootView.addView(topLayout);
scrolly.addView(linear);
rootView.addView(scrolly);
setContentView(rootView);
}
private CharSequence getLicenseString() throws IOException {
InputStream is = getResources().openRawResource(R.raw.license);
StringBuilder result = new StringBuilder();
while (is.available() > 0)
result.append((char) is.read());
return result.toString();
}
private LinearLayout generateViewForOption(final Option option) {
LinearLayout result = new LinearLayout(this);
TextView name = new TextView(this);
name.setText(option.getOptionName() + " = ");
result.addView(name);
if (option.getType().equals(Option.Type.INTEGER)) {
EditText value = new EditText(this);
value.setInputType(InputType.TYPE_CLASS_NUMBER);
value.setText(String.valueOf(option.getInt()));
option.setValueView(value);
result.addView(value);
} else if (option.getType().equals(Option.Type.BOOLEAN)) {
CheckBox value = new CheckBox(this);
value.setChecked(Boolean.valueOf(option.getBool()));
option.setValueView(value);
result.addView(value);
} else if (option.getType().equals(Option.Type.STRING_OPTIONLISTABLE)) {
Button value = new Button(this);
value.setText(option.getCurrentValueAsString());
new ParameterPopup(context, option.getPossibleOptions(), value);
option.setValueView(value);
result.addView(value);
} else if (option.getType().equals(Option.Type.STRING)) {
EditText value = new EditText(this);
value.setText(option.getCurrentValueAsString());
option.setValueView(value);
result.addView(value);
} else
throw new UnsupportedOperationException();
result.setLayoutParams(new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
return result;
}
public static void println(String string, Handler handler) {
Bundle bundle = new Bundle();
bundle.putString("print", string);
Message message = new Message();
message.setData(bundle);
handler.sendMessage(message);
}
public void setfpath(final String pathString) {
runOnUiThread(new Runnable() {
@Override
public void run() {
path.setText(pathString);
}
});
}
}
