package kr.ac.kaist.vicode.preference;

import java.util.ArrayList;

import kr.ac.kaist.vicode.Activator;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;

/**
 * Most of this code is from <code>JavaBasePreferencePage</code>
 * 
 * @author Gunwoo Kim (reshout@gmail.com)
 */
public class VicodePreferencePage extends PreferencePage implements
		IWorkbenchPreferencePage {
	private ArrayList<Button> fCheckBoxes;

	public VicodePreferencePage() {
		super();
		// TODO Auto-generated constructor stub
		setPreferenceStore(Activator.getDefault().getPreferenceStore());
		setDescription("Development environment settings for VICODE");
		fCheckBoxes = new ArrayList<Button>();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
	 */
	protected Control createContents(Composite parent) {
		// TODO Auto-generated method stub
		initializeDialogUnits(parent);

		// Outmost container
		Composite result = new Composite(parent, SWT.NONE);
		GridLayout layout = new GridLayout();
		layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
		layout.marginWidth = 0;
		layout.verticalSpacing = convertVerticalDLUsToPixels(10);
		layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
		result.setLayout(layout);

		// Esterel Compiler Option Group
		Group esterelCompilerGroup = new Group(result, SWT.NONE);
		esterelCompilerGroup.setLayout(new GridLayout());
		esterelCompilerGroup.setLayoutData(new GridData(
				GridData.FILL_HORIZONTAL));
		esterelCompilerGroup.setText("Esterel Compiler Option");
		addCheckBox(esterelCompilerGroup, "Esterel to C", "CDE_ESTEREL_C");
		addCheckBox(esterelCompilerGroup, "Esterel to Verilog",
				"CDE_ESTEREL_VERILOG");
		addCheckBox(esterelCompilerGroup, "Esterel to BLIF", "CDE_ESTEREL_BLIF");

		return result;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
	 */
	public void init(IWorkbench workbench) {
		// TODO Auto-generated method stub
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.preference.PreferencePage#performDefaults()
	 */
	protected void performDefaults() {
		// TODO Auto-generated method stub
		IPreferenceStore store = getPreferenceStore();
		for (int i = 0; i < fCheckBoxes.size(); i++) {
			Button button = (Button) fCheckBoxes.get(i);
			String key = (String) button.getData();
			button.setSelection(store.getDefaultBoolean(key));
		}

		super.performDefaults();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.preference.PreferencePage#performOk()
	 */
	public boolean performOk() {
		// TODO Auto-generated method stub
		IPreferenceStore store = getPreferenceStore();
		for (int i = 0; i < fCheckBoxes.size(); i++) {
			Button button = (Button) fCheckBoxes.get(i);
			String key = (String) button.getData();
			store.setValue(key, button.getSelection());
		}

		return super.performOk();
	}

	/**
	 * @param parent
	 * @param label
	 * @param key
	 * @return <code>Button</code> instance
	 */
	private Button addCheckBox(Composite parent, String label, String key) {
		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);

		Button button = new Button(parent, SWT.CHECK);
		button.setText(label);
		button.setData(key);
		button.setLayoutData(gd);

		button.setSelection(getPreferenceStore().getBoolean(key));

		fCheckBoxes.add(button);
		return button;
	}
}