/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.externaltools.internal.ant.preferences;


import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
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.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;
import org.eclipse.swt.widgets.Text;

import org.eclipse.core.runtime.IStatus;

import org.eclipse.jface.dialogs.DialogPage;
import org.eclipse.jface.preference.PreferenceConverter;
import org.eclipse.jface.preference.PreferencePage;

import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipse.ui.externaltools.internal.ant.editor.text.IAntEditorColorConstants;
import org.eclipse.ui.externaltools.internal.model.ExternalToolsPlugin;
import org.eclipse.ui.externaltools.internal.model.IExternalToolsHelpContextIds;
import org.eclipse.ui.externaltools.internal.ui.StatusInfo;
import org.eclipse.ui.help.WorkbenchHelp;


/*
 * The page for setting the editor options.
 */
public class AntEditorPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
	
	public final OverlayPreferenceStore.OverlayKey[] fKeys= new OverlayPreferenceStore.OverlayKey[] {
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, AntEditorPreferenceConstants.EDITOR_CURRENT_LINE_COLOR),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_CURRENT_LINE),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, AntEditorPreferenceConstants.EDITOR_PRINT_MARGIN_COLOR),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.INT, AntEditorPreferenceConstants.EDITOR_PRINT_MARGIN_COLUMN),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_PRINT_MARGIN),

		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, AntEditorPreferenceConstants.EDITOR_PROBLEM_INDICATION_COLOR),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_PROBLEM_INDICATION),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, AntEditorPreferenceConstants.EDITOR_WARNING_INDICATION_COLOR),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_WARNING_INDICATION),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, AntEditorPreferenceConstants.EDITOR_INFO_INDICATION_COLOR),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_INFO_INDICATION),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, AntEditorPreferenceConstants.EDITOR_TASK_INDICATION_COLOR),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_TASK_INDICATION),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, AntEditorPreferenceConstants.EDITOR_BOOKMARK_INDICATION_COLOR),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_BOOKMARK_INDICATION),

		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, AntEditorPreferenceConstants.EDITOR_SEARCH_RESULT_INDICATION_COLOR),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_SEARCH_RESULT_INDICATION),

		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, AntEditorPreferenceConstants.EDITOR_UNKNOWN_INDICATION_COLOR),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_UNKNOWN_INDICATION),

		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_ERROR_INDICATION_IN_OVERVIEW_RULER),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_WARNING_INDICATION_IN_OVERVIEW_RULER),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_INFO_INDICATION_IN_OVERVIEW_RULER),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_TASK_INDICATION_IN_OVERVIEW_RULER),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_BOOKMARK_INDICATION_IN_OVERVIEW_RULER),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_SEARCH_RESULT_INDICATION_IN_OVERVIEW_RULER),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_UNKNOWN_INDICATION_IN_OVERVIEW_RULER),
		
//		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_EVALUTE_TEMPORARY_PROBLEMS),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_OVERVIEW_RULER),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, AntEditorPreferenceConstants.EDITOR_LINE_NUMBER_RULER_COLOR),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AntEditorPreferenceConstants.EDITOR_LINE_NUMBER_RULER),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IAntEditorColorConstants.P_DEFAULT),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IAntEditorColorConstants.P_PROC_INSTR),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IAntEditorColorConstants.P_STRING),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IAntEditorColorConstants.P_TAG),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IAntEditorColorConstants.P_XML_COMMENT),
	};
	
	private final String[][] fAppearanceColorListModel= new String[][] {
		{AntPreferencesMessages.getString("AntEditorPreferencePage.lineNumberForegroundColor"), AntEditorPreferenceConstants.EDITOR_LINE_NUMBER_RULER_COLOR}, //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.currentLineHighlighColor"), AntEditorPreferenceConstants.EDITOR_CURRENT_LINE_COLOR}, //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.printMarginColor"), AntEditorPreferenceConstants.EDITOR_PRINT_MARGIN_COLOR}, //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.Ant_editor_text_1"), IAntEditorColorConstants.P_DEFAULT, null}, //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.Ant_editor_processing_instuctions_2"),  IAntEditorColorConstants.P_PROC_INSTR, null}, //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.Ant_editor_constant_strings_3"),  IAntEditorColorConstants.P_STRING, null},  //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.Ant_editor_tags_4"),    IAntEditorColorConstants.P_TAG, null},  //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.Ant_editor_comments_5"), IAntEditorColorConstants.P_XML_COMMENT, null} //$NON-NLS-1$
	
	};
	
	private final String[][] fAnnotationColorListModel= new String[][] {
		{AntPreferencesMessages.getString("AntEditorPreferencePage.annotations.errors"), AntEditorPreferenceConstants.EDITOR_PROBLEM_INDICATION_COLOR, AntEditorPreferenceConstants.EDITOR_PROBLEM_INDICATION, AntEditorPreferenceConstants.EDITOR_ERROR_INDICATION_IN_OVERVIEW_RULER }, //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.annotations.warnings"), AntEditorPreferenceConstants.EDITOR_WARNING_INDICATION_COLOR, AntEditorPreferenceConstants.EDITOR_WARNING_INDICATION, AntEditorPreferenceConstants.EDITOR_WARNING_INDICATION_IN_OVERVIEW_RULER }, //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.annotations.infos"), AntEditorPreferenceConstants.EDITOR_INFO_INDICATION_COLOR, AntEditorPreferenceConstants.EDITOR_INFO_INDICATION, AntEditorPreferenceConstants.EDITOR_INFO_INDICATION_IN_OVERVIEW_RULER }, //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.annotations.tasks"), AntEditorPreferenceConstants.EDITOR_TASK_INDICATION_COLOR, AntEditorPreferenceConstants.EDITOR_TASK_INDICATION, AntEditorPreferenceConstants.EDITOR_TASK_INDICATION_IN_OVERVIEW_RULER }, //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.annotations.searchResults"), AntEditorPreferenceConstants.EDITOR_SEARCH_RESULT_INDICATION_COLOR, AntEditorPreferenceConstants.EDITOR_SEARCH_RESULT_INDICATION, AntEditorPreferenceConstants.EDITOR_SEARCH_RESULT_INDICATION_IN_OVERVIEW_RULER }, //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.annotations.bookmarks"), AntEditorPreferenceConstants.EDITOR_BOOKMARK_INDICATION_COLOR, AntEditorPreferenceConstants.EDITOR_BOOKMARK_INDICATION, AntEditorPreferenceConstants.EDITOR_BOOKMARK_INDICATION_IN_OVERVIEW_RULER }, //$NON-NLS-1$
		{AntPreferencesMessages.getString("AntEditorPreferencePage.annotations.others"), AntEditorPreferenceConstants.EDITOR_UNKNOWN_INDICATION_COLOR, AntEditorPreferenceConstants.EDITOR_UNKNOWN_INDICATION, AntEditorPreferenceConstants.EDITOR_UNKNOWN_INDICATION_IN_OVERVIEW_RULER } //$NON-NLS-1$
	};

	private OverlayPreferenceStore fOverlayStore;
	
	private Map fCheckBoxes= new HashMap();
	private SelectionListener fCheckBoxListener= new SelectionListener() {
		public void widgetDefaultSelected(SelectionEvent e) {
		}
		public void widgetSelected(SelectionEvent e) {
			Button button= (Button) e.widget;
			fOverlayStore.setValue((String) fCheckBoxes.get(button), button.getSelection());
		}
	};
	
	private Map fTextFields= new HashMap();
	private ModifyListener fTextFieldListener= new ModifyListener() {
		public void modifyText(ModifyEvent e) {
			Text text= (Text) e.widget;
			fOverlayStore.setValue((String) fTextFields.get(text), text.getText());
		}
	};

	private ArrayList fNumberFields= new ArrayList();
	private ModifyListener fNumberFieldListener= new ModifyListener() {
		public void modifyText(ModifyEvent e) {
			numberFieldChanged((Text) e.widget);
		}
	};
	
	private List fAppearanceColorList;
	private List fAnnotationList;
	private ColorEditor fAppearanceColorEditor;
	private ColorEditor fAnnotationForegroundColorEditor;
	private Button fShowInTextCheckBox;
	private Button fShowInOverviewRulerCheckBox;
	
	public AntEditorPreferencePage() {
		setDescription(AntPreferencesMessages.getString("AntEditorPreferencePage.description")); //$NON-NLS-1$
		setPreferenceStore(ExternalToolsPlugin.getDefault().getPreferenceStore());
		fOverlayStore= new OverlayPreferenceStore(getPreferenceStore(), fKeys);
	}
	
	/*
	 * @see IWorkbenchPreferencePage#init()
	 */	
	public void init(IWorkbench workbench) {
	}

	/*
	 * @see PreferencePage#createControl(Composite)
	 */
	public void createControl(Composite parent) {
		super.createControl(parent);
		WorkbenchHelp.setHelp(getControl(), IExternalToolsHelpContextIds.ANT_EDITOR_PREFERENCE_PAGE);
	}

	private void handleAppearanceColorListSelection() {	
		int i= fAppearanceColorList.getSelectionIndex();
		String key= fAppearanceColorListModel[i][1];
		RGB rgb= PreferenceConverter.getColor(fOverlayStore, key);
		fAppearanceColorEditor.setColorValue(rgb);		
	}

	private void handleAnnotationListSelection() {
		int i= fAnnotationList.getSelectionIndex();
		
		String key= fAnnotationColorListModel[i][1];
		RGB rgb= PreferenceConverter.getColor(fOverlayStore, key);
		fAnnotationForegroundColorEditor.setColorValue(rgb);
		
		key= fAnnotationColorListModel[i][2];
		fShowInTextCheckBox.setSelection(fOverlayStore.getBoolean(key));
		
		key= fAnnotationColorListModel[i][3];
		fShowInOverviewRulerCheckBox.setSelection(fOverlayStore.getBoolean(key));				
	}

	private Control createAppearancePage(Composite parent) {

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

		String label= AntPreferencesMessages.getString("AntEditorPreferencePage.printMarginColumn"); //$NON-NLS-1$
		addTextField(appearanceComposite, label, AntEditorPreferenceConstants.EDITOR_PRINT_MARGIN_COLUMN, 3, 0, true);
				
		label= AntPreferencesMessages.getString("AntEditorPreferencePage.showOverviewRuler"); //$NON-NLS-1$
		addCheckBox(appearanceComposite, label, AntEditorPreferenceConstants.EDITOR_OVERVIEW_RULER, 0);
				
		label= AntPreferencesMessages.getString("AntEditorPreferencePage.showLineNumbers"); //$NON-NLS-1$
		addCheckBox(appearanceComposite, label, AntEditorPreferenceConstants.EDITOR_LINE_NUMBER_RULER, 0);

		label= AntPreferencesMessages.getString("AntEditorPreferencePage.highlightCurrentLine"); //$NON-NLS-1$
		addCheckBox(appearanceComposite, label, AntEditorPreferenceConstants.EDITOR_CURRENT_LINE, 0);
				
		label= AntPreferencesMessages.getString("AntEditorPreferencePage.showPrintMargin"); //$NON-NLS-1$
		addCheckBox(appearanceComposite, label, AntEditorPreferenceConstants.EDITOR_PRINT_MARGIN, 0);


		Label l= new Label(appearanceComposite, SWT.LEFT );
		GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
		gd.horizontalSpan= 2;
		gd.heightHint= convertHeightInCharsToPixels(1) / 2;
		l.setLayoutData(gd);
		
		l= new Label(appearanceComposite, SWT.LEFT);
		l.setText(AntPreferencesMessages.getString("AntEditorPreferencePage.appearanceOptions")); //$NON-NLS-1$
		gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
		gd.horizontalSpan= 2;
		l.setLayoutData(gd);

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

		fAppearanceColorList= new List(editorComposite, SWT.SINGLE | SWT.V_SCROLL | SWT.BORDER);
		gd= new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.FILL_HORIZONTAL);
		gd.heightHint= convertHeightInCharsToPixels(8);
		fAppearanceColorList.setLayoutData(gd);
						
		Composite stylesComposite= new Composite(editorComposite, SWT.NONE);
		layout= new GridLayout();
		layout.marginHeight= 0;
		layout.marginWidth= 0;
		layout.numColumns= 2;
		stylesComposite.setLayout(layout);
		stylesComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
		
		l= new Label(stylesComposite, SWT.LEFT);
		l.setText(AntPreferencesMessages.getString("AntEditorPreferencePage.color")); //$NON-NLS-1$
		gd= new GridData();
		gd.horizontalAlignment= GridData.BEGINNING;
		l.setLayoutData(gd);

		fAppearanceColorEditor= new ColorEditor(stylesComposite);
		Button foregroundColorButton= fAppearanceColorEditor.getButton();
		gd= new GridData(GridData.FILL_HORIZONTAL);
		gd.horizontalAlignment= GridData.BEGINNING;
		foregroundColorButton.setLayoutData(gd);

		fAppearanceColorList.addSelectionListener(new SelectionListener() {
			public void widgetDefaultSelected(SelectionEvent e) {
				// do nothing
			}
			public void widgetSelected(SelectionEvent e) {
				handleAppearanceColorListSelection();
			}
		});
		foregroundColorButton.addSelectionListener(new SelectionListener() {
			public void widgetDefaultSelected(SelectionEvent e) {
				// do nothing
			}
			public void widgetSelected(SelectionEvent e) {
				int i= fAppearanceColorList.getSelectionIndex();
				String key= fAppearanceColorListModel[i][1];
				
				PreferenceConverter.setValue(fOverlayStore, key, fAppearanceColorEditor.getColorValue());
			}
		});
		return appearanceComposite;
	}
	
	
	private Control createAnnotationsPage(Composite parent) {
		Composite composite= new Composite(parent, SWT.NULL);
		GridLayout layout= new GridLayout(); layout.numColumns= 2;
		composite.setLayout(layout);
				
//		String text= AntPreferencesMessages.getString("AntEditorPreferencePage.analyseAnnotationsWhileTyping"); //$NON-NLS-1$
//		addCheckBox(composite, text, AntEditorPreferenceConstants.EDITOR_EVALUTE_TEMPORARY_PROBLEMS, 0);
//		
//		addFiller(composite);
				
		Label label= new Label(composite, SWT.LEFT);
		label.setText(AntPreferencesMessages.getString("AntEditorPreferencePage.annotationPresentationOptions")); //$NON-NLS-1$
		GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
		gd.horizontalSpan= 2;
		label.setLayoutData(gd);

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

		fAnnotationList= new List(editorComposite, SWT.SINGLE | SWT.V_SCROLL | SWT.BORDER);
		gd= new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.FILL_HORIZONTAL);
		gd.heightHint= convertHeightInCharsToPixels(8);
		fAnnotationList.setLayoutData(gd);
						
		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(AntPreferencesMessages.getString("AntEditorPreferencePage.annotations.showInText")); //$NON-NLS-1$
		gd= new GridData(GridData.FILL_HORIZONTAL);
		gd.horizontalAlignment= GridData.BEGINNING;
		gd.horizontalSpan= 2;
		fShowInTextCheckBox.setLayoutData(gd);
		
		fShowInOverviewRulerCheckBox= new Button(optionsComposite, SWT.CHECK);
		fShowInOverviewRulerCheckBox.setText(AntPreferencesMessages.getString("AntEditorPreferencePage.annotations.showInOverviewRuler")); //$NON-NLS-1$
		gd= new GridData(GridData.FILL_HORIZONTAL);
		gd.horizontalAlignment= GridData.BEGINNING;
		gd.horizontalSpan= 2;
		fShowInOverviewRulerCheckBox.setLayoutData(gd);
		
		label= new Label(optionsComposite, SWT.LEFT);
		label.setText(AntPreferencesMessages.getString("AntEditorPreferencePage.annotations.color")); //$NON-NLS-1$
		gd= new GridData();
		gd.horizontalAlignment= GridData.BEGINNING;
		label.setLayoutData(gd);

		fAnnotationForegroundColorEditor= new ColorEditor(optionsComposite);
		Button foregroundColorButton= fAnnotationForegroundColorEditor.getButton();
		gd= new GridData(GridData.FILL_HORIZONTAL);
		gd.horizontalAlignment= GridData.BEGINNING;
		foregroundColorButton.setLayoutData(gd);

		fAnnotationList.addSelectionListener(new SelectionListener() {
			public void widgetDefaultSelected(SelectionEvent e) {
				// do nothing
			}
			
			public void widgetSelected(SelectionEvent e) {
				handleAnnotationListSelection();
			}
		});
		
		fShowInTextCheckBox.addSelectionListener(new SelectionListener() {
			public void widgetDefaultSelected(SelectionEvent e) {
				// do nothing
			}
			
			public void widgetSelected(SelectionEvent e) {
				int i= fAnnotationList.getSelectionIndex();
				String key= fAnnotationColorListModel[i][2];
				fOverlayStore.setValue(key, fShowInTextCheckBox.getSelection());
			}
		});
		
		fShowInOverviewRulerCheckBox.addSelectionListener(new SelectionListener() {
			public void widgetDefaultSelected(SelectionEvent e) {
				// do nothing
			}
			
			public void widgetSelected(SelectionEvent e) {
				int i= fAnnotationList.getSelectionIndex();
				String key= fAnnotationColorListModel[i][3];
				fOverlayStore.setValue(key, fShowInOverviewRulerCheckBox.getSelection());
			}
		});
		
		foregroundColorButton.addSelectionListener(new SelectionListener() {
			public void widgetDefaultSelected(SelectionEvent e) {
				// do nothing
			}
			
			public void widgetSelected(SelectionEvent e) {
				int i= fAnnotationList.getSelectionIndex();
				String key= fAnnotationColorListModel[i][1];
				PreferenceConverter.setValue(fOverlayStore, key, fAnnotationForegroundColorEditor.getColorValue());
			}
		});
		
		return composite;
	}

//	private void addFiller(Composite composite) {
//		Label filler= new Label(composite, SWT.LEFT );
//		GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
//		gd.horizontalSpan= 2;
//		gd.heightHint= convertHeightInCharsToPixels(1) / 2;
//		filler.setLayoutData(gd);
//	}
	
	/*
	 * @see PreferencePage#createContents(Composite)
	 */
	protected Control createContents(Composite parent) {
		
		fOverlayStore.load();
		fOverlayStore.start();
		
		TabFolder folder= new TabFolder(parent, SWT.NONE);
		folder.setLayout(new TabFolderLayout());	
		folder.setLayoutData(new GridData(GridData.FILL_BOTH));
		
		TabItem item= new TabItem(folder, SWT.NONE);
		item.setText(AntPreferencesMessages.getString("AntEditorPreferencePage.general")); //$NON-NLS-1$
		item.setControl(createAppearancePage(folder));
		
		item= new TabItem(folder, SWT.NONE);
		item.setText(AntPreferencesMessages.getString("AntEditorPreferencePage.annotationsTab.title")); //$NON-NLS-1$
		item.setControl(createAnnotationsPage(folder));

		initialize();
		
		return folder;
	}
	
	private void initialize() {
		
		initializeFields();
		
		for (int i= 0; i < fAppearanceColorListModel.length; i++) {
			fAppearanceColorList.add(fAppearanceColorListModel[i][0]);
		}
		fAppearanceColorList.getDisplay().asyncExec(new Runnable() {
			public void run() {
				if (fAppearanceColorList != null && !fAppearanceColorList.isDisposed()) {
					fAppearanceColorList.select(0);
					handleAppearanceColorListSelection();
				}
			}
		});
		
		for (int i= 0; i < fAnnotationColorListModel.length; i++) {
			fAnnotationList.add(fAnnotationColorListModel[i][0]);
		}
		fAnnotationList.getDisplay().asyncExec(new Runnable() {
			public void run() {
				if (fAnnotationList != null && !fAnnotationList.isDisposed()) {
					fAnnotationList.select(0);
					handleAnnotationListSelection();
				}
			}
		});

	}
	
	private void initializeFields() {
		
		Iterator e= fCheckBoxes.keySet().iterator();
		while (e.hasNext()) {
			Button b= (Button) e.next();
			String key= (String) fCheckBoxes.get(b);
			b.setSelection(fOverlayStore.getBoolean(key));
		}
		
		e= fTextFields.keySet().iterator();
		while (e.hasNext()) {
			Text t= (Text) e.next();
			String key= (String) fTextFields.get(t);
			t.setText(fOverlayStore.getString(key));
		}
				
	}
	
	/*
	 * @see PreferencePage#performOk()
	 */
	public boolean performOk() {
		fOverlayStore.propagate();
		ExternalToolsPlugin.getDefault().savePluginPreferences();
		return true;
	}
	
	/*
	 * @see PreferencePage#performDefaults()
	 */
	protected void performDefaults() {
		
		fOverlayStore.loadDefaults();

		initializeFields();

		handleAppearanceColorListSelection();
		handleAnnotationListSelection();

		super.performDefaults();
	}
	
	/*
	 * @see DialogPage#dispose()
	 */
	public void dispose() {
		
		if (fOverlayStore != null) {
			fOverlayStore.stop();
			fOverlayStore= null;
		}
		
		super.dispose();
	}
	
	private Button addCheckBox(Composite parent, String label, String key, int indentation) {		
		Button checkBox= new Button(parent, SWT.CHECK);
		checkBox.setText(label);
		
		GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
		gd.horizontalIndent= indentation;
		gd.horizontalSpan= 2;
		checkBox.setLayoutData(gd);
		checkBox.addSelectionListener(fCheckBoxListener);
		
		fCheckBoxes.put(checkBox, key);
		
		return checkBox;
	}
	
	private Control addTextField(Composite composite, String label, String key, int textLimit, int indentation, boolean isNumber) {
		
		Label labelControl= new Label(composite, SWT.NONE);
		labelControl.setText(label);
		GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
		gd.horizontalIndent= indentation;
		labelControl.setLayoutData(gd);
		
		Text textControl= new Text(composite, SWT.BORDER | SWT.SINGLE);		
		gd= new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
		gd.widthHint= convertWidthInCharsToPixels(textLimit + 1);
		textControl.setLayoutData(gd);
		textControl.setTextLimit(textLimit);
		fTextFields.put(textControl, key);
		if (isNumber) {
			fNumberFields.add(textControl);
			textControl.addModifyListener(fNumberFieldListener);
		} else {
			textControl.addModifyListener(fTextFieldListener);
		}
			
		return textControl;
	}
	
	private void numberFieldChanged(Text textControl) {
		String number= textControl.getText();
		IStatus status= validatePositiveNumber(number);
		if (!status.matches(IStatus.ERROR))
			fOverlayStore.setValue((String) fTextFields.get(textControl), number);
		updateStatus(status);
	}
	
	private IStatus validatePositiveNumber(String number) {
		StatusInfo status= new StatusInfo();
		if (number.length() == 0) {
			status.setError(AntPreferencesMessages.getString("AntEditorPreferencePage.empty_input")); //$NON-NLS-1$
		} else {
			try {
				int value= Integer.parseInt(number);
				if (value < 0)
					status.setError(AntPreferencesMessages.getFormattedString("AntEditorPreferencePage.invalid_input", number)); //$NON-NLS-1$
			} catch (NumberFormatException e) {
				status.setError(AntPreferencesMessages.getFormattedString("AntEditorPreferencePage.invalid_input", number)); //$NON-NLS-1$
			}
		}
		return status;
	}
	
	void updateStatus(IStatus status) {
		if (!status.matches(IStatus.ERROR)) {
			for (int i= 0; i < fNumberFields.size(); i++) {
				Text text= (Text) fNumberFields.get(i);
				IStatus s= validatePositiveNumber(text.getText());
				status= s.getSeverity() > status.getSeverity() ? s : status;
			}
		}	
		setValid(!status.matches(IStatus.ERROR));
		applyToStatusLine(this, status);
	}

	/**
	 * Applies the status to the status line of a dialog page.
	 */
	public void applyToStatusLine(DialogPage page, IStatus status) {
		String message= status.getMessage();
		switch (status.getSeverity()) {
			case IStatus.OK:
				page.setMessage(message, DialogPage.NONE);
				page.setErrorMessage(null);
				break;
			case IStatus.WARNING:
				page.setMessage(message, DialogPage.WARNING);
				page.setErrorMessage(null);
				break;				
			case IStatus.INFO:
				page.setMessage(message, DialogPage.INFORMATION);
				page.setErrorMessage(null);
				break;			
			default:
				if (message.length() == 0) {
					message= null;
				}
				page.setMessage(null);
				page.setErrorMessage(message);
				break;		
		}
	}
	
}