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.IMessageProvider; 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.graphics.Point; import org.eclipse.swt.layout.GridData; 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.rssowl.core.Owl; import org.rssowl.core.persist.pref.IPreferenceScope; import org.rssowl.ui.internal.OwlUI; import org.rssowl.ui.internal.util.LayoutUtils; /** * Generic Dialog for asking for confirmation when performing something. * * @author bpasero */ public class ConfirmDialog extends TitleAreaDialog { private String fDialogHeaderMessage; private String fDialogMessage; private Button fNeverAskAgainCheck; private String fTitle; private LocalResourceManager fResources; private String fConfirmPrefKey; private IPreferenceScope fPreferences; private String fButtonName; /** * Instantiate a new ConfirmDeleteDialog * * @param parentShell The parent shell * @param title The title of the dialog * @param dialogHeaderMessage The info message * @param dialogMessage The dialog message * @param confirmPrefKey The key to the boolean preference to receive the * setting for "Never ask again" */ public ConfirmDialog(Shell parentShell, String title, String dialogHeaderMessage, String dialogMessage, String confirmPrefKey) { this(parentShell, title, dialogHeaderMessage, dialogMessage, Messages.ConfirmDialog_DELETE, confirmPrefKey); } /** * Instantiate a new ConfirmDeleteDialog * * @param parentShell The parent shell * @param title The title of the dialog * @param dialogHeaderMessage The info message * @param dialogMessage The dialog message * @param okButtonName * @param confirmPrefKey The key to the boolean preference to receive the * setting for "Never ask again" */ public ConfirmDialog(Shell parentShell, String title, String dialogHeaderMessage, String dialogMessage, String okButtonName, String confirmPrefKey) { super(parentShell); fTitle = title; fDialogMessage = dialogMessage; fDialogHeaderMessage = dialogHeaderMessage; fButtonName = okButtonName; fConfirmPrefKey = confirmPrefKey; fResources = new LocalResourceManager(JFaceResources.getResources()); fPreferences = Owl.getPreferenceService().getGlobalScope(); } /* * @see org.eclipse.jface.dialogs.TrayDialog#close() */ @Override public boolean close() { fResources.dispose(); return super.close(); } /* * @see org.eclipse.jface.dialogs.Dialog#okPressed() */ @Override protected void okPressed() { if (fNeverAskAgainCheck != null && fNeverAskAgainCheck.getSelection()) fPreferences.putBoolean(fConfirmPrefKey, false); super.okPressed(); } /* * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell) */ @Override protected void configureShell(Shell newShell) { super.configureShell(newShell); newShell.setText(fTitle); } /** * @return the path to the title image to use. */ protected String getTitleImage() { return "/icons/wizban/trash.gif"; //$NON-NLS-1$ } /* * @see org.eclipse.jface.dialogs.TitleAreaDialog#createDialogArea(org.eclipse.swt.widgets.Composite) */ @Override protected Control createDialogArea(Composite parent) { /* Composite to hold all components */ Composite composite = new Composite((Composite) super.createDialogArea(parent), SWT.NONE); composite.setLayout(LayoutUtils.createGridLayout(1, 5, 10)); composite.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); /* Title */ setTitle(Messages.ConfirmDialog_DELETE); /* Title Image */ setTitleImage(OwlUI.getImage(fResources, getTitleImage())); /* Title Message */ setMessage(fDialogHeaderMessage, IMessageProvider.WARNING); /* Dialog Message */ Label dialogMessageLabel = new Label(composite, SWT.WRAP); dialogMessageLabel.setText(fDialogMessage); dialogMessageLabel.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); /* Spacer */ new Label(composite, SWT.NONE); /* Checkbox to disable confirm dialog */ if (fConfirmPrefKey != null) { fNeverAskAgainCheck = new Button(composite, SWT.CHECK); fNeverAskAgainCheck.setText(Messages.ConfirmDialog_NEVER_ASK_AGAIN); } /* Holder for the separator to the OK and Cancel buttons */ Composite sepHolder = new Composite(parent, SWT.NONE); sepHolder.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); sepHolder.setLayout(LayoutUtils.createGridLayout(1, 0, 0)); /* Separator */ Label separator = new Label(sepHolder, SWT.SEPARATOR | SWT.HORIZONTAL); separator.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); 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, fButtonName, false); createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, true); getButton(IDialogConstants.CANCEL_ID).setFocus(); } /* * @see org.eclipse.jface.dialogs.Dialog#initializeBounds() */ @Override protected void initializeBounds() { super.initializeBounds(); Point bestSize = getShell().computeSize(convertHorizontalDLUsToPixels(OwlUI.MIN_DIALOG_WIDTH_DLU), SWT.DEFAULT); Point location = getInitialLocation(bestSize); getShell().setBounds(location.x, location.y, bestSize.x, bestSize.y); } }