/******************************************************************************* * Copyright (c) 2003 Berthold Daum. * 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: *     Berthold Daum *******************************************************************************/package com.bdaum.SpellChecker.preferences;import org.eclipse.jface.preference.*;import org.eclipse.swt.widgets.Composite;import org.eclipse.ui.IWorkbench;import org.eclipse.ui.IWorkbenchPreferencePage;import org.eclipse.ui.help.WorkbenchHelp;import com.bdaum.SpellChecker.Messages;import com.swabunga.spell.engine.Configuration;/** * This class implements the common parts of spell checker preference pages. */public abstract class SpellCheckerPreferencePage extends		FieldEditorPreferencePage implements IWorkbenchPreferencePage {	/**	 * Subclass of StringFieldEditor in order to check the user dictionary	 * suffix for invalid characters	 */	public class UserSuffixFieldEditor extends StringFieldEditor {		public UserSuffixFieldEditor(String name, String labelText,				Composite parent) {			super(name, labelText, 15, parent);		}		/**		 * Checks if entered values are valid		 * 		 * @return - true if valid		 */		protected boolean doCheckState() {			String txt = getTextControl().getText();			for (int i = 0; i < txt.length(); i++) {				if (!Character.isLetterOrDigit(txt.charAt(i))) {					setErrorMessage(Messages							.getString("SpellCheckerPreferencePage.Invalid_character_in_suffix"));					return false;				}			}			return super.doCheckState();		}	}	public static final String SPELLCHECKERPREFERENCESCONTEXT = "com.bdaum.SpellChecker.preferences_context";	/* Constructor */	public SpellCheckerPreferencePage() {		super(GRID);	}	/**	 * Initialization	 */	public void init(IWorkbench workbench) {		setDescription(Messages				.getString("SpellCheckerPreferencePage.All_changes_will_take_effect"));	}	/**	 * Get Plug-in specific workspace PreferenceStore instance	 * 	 * @return - preference store instance	 */	public abstract IPreferenceStore doGetPreferenceStore();	/**	 * Construct page content	 */	public void createControl(Composite parent) {		super.createControl(parent);		WorkbenchHelp.setHelp(parent.getParent(), getPreferenceHelpContextID());	}	/**	 * Get Help context id for this preference page	 * 	 * @return String - the ID for context sensitive help.	 */	protected String getPreferenceHelpContextID() {		return SPELLCHECKERPREFERENCESCONTEXT;	}	/**	 * Create field editors	 */	public void createFieldEditors() {		Composite composite = getFieldEditorParent();		addField(new FileFieldEditor(				SpellCheckerPreferences.SPELL_DICTIONARY,				Messages						.getString("SpellCheckerPreferencePage.Spell_Dictionary_File"),				composite));		addField(new UserSuffixFieldEditor(				SpellCheckerPreferences.USER_DICTIONARY,				Messages						.getString("SpellCheckerPreferencePage.User_Dictionary_File_Suffix"),				composite));		ShortIntegerFieldEditor thresholdEditor = new ShortIntegerFieldEditor(				Configuration.SPELL_THRESHOLD,				Messages						.getString("SpellCheckerPreferencePage.Spell_Threshold"),				composite, 4);		thresholdEditor.setValidRange(0, 9999);		addField(thresholdEditor);		addField(new BooleanFieldEditor(				Configuration.SPELL_IGNOREDIGITWORDS,				Messages.getString("SpellCheckerPreferencePage.Ignore_Numbers"),				composite));		addField(new BooleanFieldEditor(				SpellCheckerPreferences.IGNOREONELETTERWORDS,				Messages						.getString("SpellCheckerPreferencePage.Ignore_one_letter_words"),				composite));		addField(new BooleanFieldEditor(				Configuration.SPELL_IGNOREMIXEDCASE,				Messages						.getString("SpellCheckerPreferencePage.Ignore_Mixed_Case"),				composite));		addField(new BooleanFieldEditor(				Configuration.SPELL_IGNORESENTENCECAPITALIZATION,				Messages						.getString("SpellCheckerPreferencePage.Ignore_Sentence_Capitalization"),				composite));		addField(new BooleanFieldEditor(				Configuration.SPELL_IGNOREUPPERCASE,				Messages						.getString("SpellCheckerPreferencePage.Ignore_Upper_Case"),				composite));		addField(new StringFieldEditor(				SpellCheckerPreferences.COMPOUNDCHARACTERS,				Messages						.getString("SpellCheckerPreferencePage.CompoundCharacters"),				15, composite));	}}