Java tutorial
/* ********************************************************************** ** ** Copyright notice ** ** ** ** (c) 2005-2009 RSSOwl Development Team ** ** http://www.rssowl.org/ ** ** ** ** All rights reserved ** ** ** ** This program and the accompanying materials are made available under ** ** the terms of the Eclipse Public License v1.0 which accompanies this ** ** distribution, and is available at: ** ** http://www.rssowl.org/legal/epl-v10.html ** ** ** ** A copy is found in the file epl-v10.html and important notices to the ** ** license from the team is found in the textfile LICENSE.txt distributed ** ** in this package. ** ** ** ** This copyright notice MUST APPEAR in all copies of the file! ** ** ** ** Contributors: ** ** RSSOwl Development Team - initial API and implementation ** ** ** ** ********************************************************************** */ package org.rssowl.ui.internal.dialogs; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.resource.LocalResourceManager; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Point; 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.Shell; import org.eclipse.swt.widgets.Spinner; import org.rssowl.core.Owl; import org.rssowl.core.internal.persist.pref.DefaultPreferences; import org.rssowl.core.persist.pref.IPreferenceScope; import org.rssowl.ui.internal.OwlUI; import org.rssowl.ui.internal.util.LayoutUtils; /** * A reminder for the user to perform clean up in certain intervals. * * @author bpasero@rssowl.org */ public class CleanUpReminderDialog extends TitleAreaDialog { /* Keep the visible instance saved */ private static CleanUpReminderDialog fVisibleInstance; private LocalResourceManager fResources; private IPreferenceScope fPreferences = Owl.getPreferenceService().getGlobalScope(); /** * @param parentShell */ public CleanUpReminderDialog(Shell parentShell) { super(parentShell); fResources = new LocalResourceManager(JFaceResources.getResources()); } /** * @return Returns an instance of <code>CleanUpReminderDialog</code> or * <code>NULL</code> in case no instance is currently open. */ public static CleanUpReminderDialog getVisibleInstance() { return fVisibleInstance; } /* * @see org.eclipse.jface.window.Window#open() */ @Override public int open() { fVisibleInstance = this; return super.open(); } /* * @see org.eclipse.jface.dialogs.TitleAreaDialog#close() */ @Override public boolean close() { fVisibleInstance = null; fResources.dispose(); return super.close(); } /* * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell) */ @Override protected void configureShell(Shell shell) { super.configureShell(shell); shell.setText(Messages.CleanUpReminderDialog_CLEANUP_REMINDER_TITLE); } /* * @see org.eclipse.jface.dialogs.TitleAreaDialog#createDialogArea(org.eclipse.swt.widgets.Composite) */ @Override protected Control createDialogArea(Composite parent) { /* Title */ setTitle(Messages.CleanUpReminderDialog_CLEANUP_REMINDER); /* Title Image */ setTitleImage(OwlUI.getImage(fResources, "icons/wizban/cleanup_wiz.gif")); //$NON-NLS-1$ /* Title Message */ setMessage(Messages.CleanUpReminderDialog_REMINDER_MSG); /* Separator */ new Label(parent, SWT.SEPARATOR | SWT.HORIZONTAL) .setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); /* Composite to hold all components */ Composite composite = new Composite(parent, SWT.NONE); composite.setLayout(LayoutUtils.createGridLayout(1, 5, 10)); composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); Label infoLabel = new Label(composite, SWT.WRAP); infoLabel.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); infoLabel.setText(Messages.CleanUpReminderDialog_OPEN_CLEANUP_WIZARD); Composite controlsContainer = new Composite(composite, SWT.NONE); controlsContainer.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); controlsContainer.setLayout(LayoutUtils.createGridLayout(3, 0, 0, 5, 0, false)); ((GridLayout) controlsContainer.getLayout()).marginTop = 25; final Button reminderCheck = new Button(controlsContainer, SWT.CHECK); reminderCheck.setText(Messages.CleanUpReminderDialog_REMIND_EVERY); reminderCheck.setSelection(fPreferences.getBoolean(DefaultPreferences.CLEAN_UP_REMINDER_STATE)); final Spinner reminderDaysValue = new Spinner(controlsContainer, SWT.BORDER); reminderDaysValue.setMaximum(100); reminderDaysValue.setMinimum(1); reminderDaysValue.setSelection(fPreferences.getInteger(DefaultPreferences.CLEAN_UP_REMINDER_DAYS_VALUE)); reminderDaysValue.setEnabled(reminderCheck.getSelection()); reminderDaysValue.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { fPreferences.putInteger(DefaultPreferences.CLEAN_UP_REMINDER_DAYS_VALUE, reminderDaysValue.getSelection()); } }); reminderCheck.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { reminderDaysValue.setEnabled(reminderCheck.getSelection()); fPreferences.putBoolean(DefaultPreferences.CLEAN_UP_REMINDER_STATE, reminderCheck.getSelection()); } }); Label reminderDaysLabel = new Label(controlsContainer, SWT.NONE); reminderDaysLabel.setText(Messages.CleanUpReminderDialog_DAYS); /* Separator */ new Label(parent, SWT.SEPARATOR | SWT.HORIZONTAL) .setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); applyDialogFont(composite); return composite; } /* * @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite) */ @Override protected void createButtonsForButtonBar(Composite parent) { createButton(parent, IDialogConstants.OK_ID, IDialogConstants.YES_LABEL, true); createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.NO_LABEL, false); } /* * @see org.eclipse.jface.window.Window#getShellStyle() */ @Override protected int getShellStyle() { int style = SWT.TITLE | SWT.BORDER | SWT.CLOSE | getDefaultOrientation(); return style; } /* * @see org.eclipse.jface.dialogs.Dialog#initializeBounds() */ @Override protected void initializeBounds() { super.initializeBounds(); Shell shell = getShell(); /* Minimum Size */ int maxWidth = convertHorizontalDLUsToPixels(OwlUI.MIN_DIALOG_WIDTH_DLU); int maxHeight = 500; /* Required Size */ Point requiredSize = shell.computeSize(SWT.DEFAULT, SWT.DEFAULT); shell.setSize(Math.min(maxWidth, requiredSize.x), Math.min(maxHeight, requiredSize.y)); LayoutUtils.positionShell(shell); } }