/*
 * Copyright (c) 2003-2004 Christopher Lenz and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     Christopher Lenz - initial API and implementation
 * 
 * $Id: CssEditorAnnotationsConfigurationBlock.java,v 1.1 2004-09-02 18:11:50 jsurfer Exp $
 */

package net.sourceforge.phpeclipse.css.ui.internal.preferences;

import java.util.ArrayList;
import java.util.Iterator;

import net.sourceforge.phpeclipse.css.ui.internal.CssUIMessages;

import org.eclipse.jface.preference.ColorSelector;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.PreferenceConverter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.RGB;
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.Label;
import org.eclipse.swt.widgets.List;
import org.eclipse.ui.texteditor.AnnotationPreference;
import org.eclipse.ui.texteditor.MarkerAnnotationPreferences;

/**
 * 
 */
final class CssEditorAnnotationsConfigurationBlock
	extends AbstractConfigurationBlock {

	// Instance Variables ------------------------------------------------------

	private List fColorList;
	private String[][] fColorListModel;
	private ColorSelector fColorSelector;
	private Button fShowInTextCheckBox;
	private Button fShowInOverviewRulerCheckBox;

	// Constructors ------------------------------------------------------------

	public CssEditorAnnotationsConfigurationBlock(IPreferenceStore store) {
		super(store);
		MarkerAnnotationPreferences preferences =
			new MarkerAnnotationPreferences();
		fColorListModel = createAnnotationTypeListModel(preferences);
	}

	// Public Methods ----------------------------------------------------------

	public Control createControl(Composite parent) {

		Composite composite = new Composite(parent, SWT.NONE);
		GridLayout layout = new GridLayout();
		layout.numColumns = 2;
		composite.setLayout(layout);

		Label label = new Label(composite, SWT.LEFT);
		label.setText(getString("presentationOptions")); //$NON-NLS-1$
		GridData gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
		gridData.horizontalSpan = 2;
		label.setLayoutData(gridData);

		Composite editorComposite = new Composite(composite, SWT.NONE);
		layout = new GridLayout();
		layout.numColumns = 2;
		layout.marginHeight = 0;
		layout.marginWidth = 0;
		editorComposite.setLayout(layout);
		gridData = new GridData(
			GridData.HORIZONTAL_ALIGN_FILL | GridData.FILL_VERTICAL);
		gridData.horizontalSpan = 2;
		editorComposite.setLayoutData(gridData);	  

		fColorList = new List(editorComposite,
			SWT.SINGLE | SWT.V_SCROLL | SWT.BORDER);
		gridData = new GridData(
			GridData.VERTICAL_ALIGN_BEGINNING | GridData.FILL_HORIZONTAL);
		gridData.heightHint = convertHeightInCharsToPixels(composite, 8);
		fColorList.setLayoutData(gridData);
		fColorList.addSelectionListener(new SelectionListener() {
			public void widgetDefaultSelected(SelectionEvent e) { }
			public void widgetSelected(SelectionEvent e) {
				handleAnnotationColorListSelection();
			}
		});

		Composite optionsComposite = new Composite(editorComposite, SWT.NONE);
		layout = new GridLayout();
		layout.marginHeight = 0;
		layout.marginWidth = 0;
		layout.numColumns = 2;
		optionsComposite.setLayout(layout);
		optionsComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
		
		fShowInTextCheckBox = new Button(optionsComposite, SWT.CHECK);
		fShowInTextCheckBox.setText(getString(
			"showInText")); //$NON-NLS-1$
		gridData = new GridData(GridData.FILL_HORIZONTAL);
		gridData.horizontalAlignment = GridData.BEGINNING;
		gridData.horizontalSpan = 2;
		fShowInTextCheckBox.setLayoutData(gridData);
		fShowInTextCheckBox.addSelectionListener(new SelectionListener() {
			public void widgetDefaultSelected(SelectionEvent e) { }
			public void widgetSelected(SelectionEvent e) {
				int i = fColorList.getSelectionIndex();
				String key = fColorListModel[i][2];
				getPreferenceStore().setValue(key,
					fShowInTextCheckBox.getSelection());
			}
		});
		
		fShowInOverviewRulerCheckBox = new Button(optionsComposite, SWT.CHECK);
		fShowInOverviewRulerCheckBox.setText(getString(
			"showInOverviewRuler")); //$NON-NLS-1$
		gridData = new GridData(GridData.FILL_HORIZONTAL);
		gridData.horizontalAlignment = GridData.BEGINNING;
		gridData.horizontalSpan = 2;
		fShowInOverviewRulerCheckBox.setLayoutData(gridData);
		fShowInOverviewRulerCheckBox.addSelectionListener(
			new SelectionListener() {
				public void widgetDefaultSelected(SelectionEvent e) { }
				public void widgetSelected(SelectionEvent e) {
					int i = fColorList.getSelectionIndex();
					String key = fColorListModel[i][3];
					getPreferenceStore().setValue(key,
						fShowInOverviewRulerCheckBox.getSelection());
				}
			});
		
		label = new Label(optionsComposite, SWT.LEFT);
		label.setText(getString("color")); //$NON-NLS-1$
		gridData = new GridData();
		gridData.horizontalAlignment = GridData.BEGINNING;
		label.setLayoutData(gridData);

		fColorSelector = new ColorSelector(optionsComposite);
		Button foregroundColorButton = fColorSelector.getButton();
		gridData = new GridData(GridData.FILL_HORIZONTAL);
		gridData.horizontalAlignment = GridData.BEGINNING;
		foregroundColorButton.setLayoutData(gridData);
		foregroundColorButton.addSelectionListener(new SelectionListener() {
			public void widgetDefaultSelected(SelectionEvent e) { }
			public void widgetSelected(SelectionEvent e) {
				int i = fColorList.getSelectionIndex();
				String key = fColorListModel[i][1];
				PreferenceConverter.setValue(getPreferenceStore(), key,
					fColorSelector.getColorValue());
			}
		});

		initialize();

		return composite;
	}

	// Event Handlers ----------------------------------------------------------

	void handleAnnotationColorListSelection() {
		int i = fColorList.getSelectionIndex();
		String key = fColorListModel[i][1];
		RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), key);
		fColorSelector.setColorValue(rgb);
		key = fColorListModel[i][2];
		fShowInTextCheckBox.setSelection(getPreferenceStore().getBoolean(key));
		key = fColorListModel[i][3];
		fShowInOverviewRulerCheckBox.setSelection(
			getPreferenceStore().getBoolean(key));				 
	}
	
	// Private Methods ---------------------------------------------------------

	private String[][] createAnnotationTypeListModel(
		MarkerAnnotationPreferences preferences) {
		
		ArrayList listModelItems = new ArrayList();
		Iterator i = preferences.getAnnotationPreferences().iterator();
		while (i.hasNext()) {
			AnnotationPreference info = (AnnotationPreference) i.next();
			listModelItems.add(new String[] {
				info.getPreferenceLabel(),
				info.getColorPreferenceKey(),
				info.getTextPreferenceKey(),
				info.getOverviewRulerPreferenceKey()
			});
		}

		String[][] listModel = new String[listModelItems.size()][];
		listModelItems.toArray(listModel);
		return listModel;
	}

	private static String getString(String key) {
		return CssUIMessages.getString(
			"CssEditorPreferencePage.annotations." + key); //$NON-NLS-1$
	}

	private void initialize() {
		for (int i = 0; i < fColorListModel.length; i++) {
			fColorList.add(fColorListModel[i][0]);
		}
		fColorList.getDisplay().asyncExec(new Runnable() {
			public void run() {
				if ((fColorList != null)
				 && !fColorList.isDisposed()) {
					fColorList.select(0);
					handleAnnotationColorListSelection();
				}
			}
		});
		initializeFields();
	}

}