Java tutorial
/******************************************************************************* * Copyright (c) 2003, 2007 IBM Corporation and others. * 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.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * QNX Software Systems - Mikhail Khodjaiants - Bug 114664 *******************************************************************************/ package org.eclipse.debug.internal.ui.sourcelookup.browsers; import java.io.File; import org.eclipse.debug.internal.core.IInternalDebugCoreConstants; import org.eclipse.debug.internal.ui.DebugPluginImages; import org.eclipse.debug.internal.ui.DebugUIPlugin; import org.eclipse.debug.internal.ui.IDebugHelpContextIds; import org.eclipse.debug.internal.ui.IInternalDebugUIConstants; import org.eclipse.debug.internal.ui.sourcelookup.SourceLookupUIMessages; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.Image; 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.DirectoryDialog; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.PlatformUI; /** * The dialog for selecting the external folder for which a source container will be created. * * @since 3.0 */ public class DirectorySourceContainerDialog extends TitleAreaDialog { private static final String LAST_PATH_SETTING = "EXT_FOLDER_LAST_PATH_SETTING"; //$NON-NLS-1$ private static final String LAST_SUBDIR_SETTING = "EXT_FOLDER_LAST_SUBDIR_SETTING"; //$NON-NLS-1$ private String fDirectory; private boolean fSearchSubfolders = true; private Text fDirText; private Button fSubfoldersButton; private boolean fNewContainer = true; /** * Creates a dialog to select a new file system folder. * * @param shell shell */ public DirectorySourceContainerDialog(Shell shell) { this(shell, IInternalDebugCoreConstants.EMPTY_STRING, DebugUIPlugin.getDefault().getDialogSettings().getBoolean(LAST_SUBDIR_SETTING)); fNewContainer = true; } /** * Creates a dialog to edit file system folder. * * @param shell shell * @param directory directory to edit or empty string * @param searchSubfolders whether the search sub-folders button should be checked * @param newContainer */ public DirectorySourceContainerDialog(Shell shell, String directory, boolean searchSubfolders) { super(shell); setShellStyle(getShellStyle() | SWT.RESIZE); fDirectory = directory; fSearchSubfolders = searchSubfolders; fNewContainer = false; } /** * Returns the result of the dialog.open() operation * @return the dialog.open() result */ public String getDirectory() { return fDirectory; } /** * Returns whether the 'search subfolders' option is selected. * * @return whether the 'search subfolders' option is selected */ public boolean isSearchSubfolders() { return fSearchSubfolders; } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.TitleAreaDialog#createDialogArea(org.eclipse.swt.widgets.Composite) */ protected Control createDialogArea(Composite parent) { Image image = (fNewContainer) ? DebugPluginImages.getImage(IInternalDebugUIConstants.IMG_ADD_SRC_DIR_WIZ) : DebugPluginImages.getImage(IInternalDebugUIConstants.IMG_EDIT_SRC_DIR_WIZ); setTitle(SourceLookupUIMessages.DirectorySourceContainerDialog_2); setMessage(SourceLookupUIMessages.DirectorySourceContainerDialog_3); setTitleImage(image); Composite parentComposite = (Composite) super.createDialogArea(parent); Font font = parentComposite.getFont(); Composite composite = new Composite(parentComposite, SWT.NONE); GridLayout layout = new GridLayout(); layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN); layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN); layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING); layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING); composite.setLayout(layout); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); composite.setFont(font); Composite dirComposite = new Composite(composite, SWT.NONE); layout = new GridLayout(2, false); dirComposite.setLayout(layout); dirComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); dirComposite.setFont(font); Label label = new Label(dirComposite, SWT.NONE); label.setText(SourceLookupUIMessages.DirectorySourceContainerDialog_4); GridData data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 2; label.setLayoutData(data); label.setFont(font); fDirText = new Text(dirComposite, SWT.BORDER); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 1; fDirText.setLayoutData(data); fDirText.setFont(font); fDirText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { validate(); } }); Button button = new Button(dirComposite, SWT.PUSH); button.setText(SourceLookupUIMessages.DirectorySourceContainerDialog_5); data = new GridData(); int widthHint = convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH); Point minSize = button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true); data.widthHint = Math.max(widthHint, minSize.x); button.setLayoutData(data); button.setFont(JFaceResources.getDialogFont()); button.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { browse(); } }); fSubfoldersButton = new Button(composite, SWT.CHECK); fSubfoldersButton.setText(SourceLookupUIMessages.DirectorySourceContainerDialog_6); return parentComposite; } /* (non-Javadoc) * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell) */ protected void configureShell(Shell newShell) { String title = null; if (fNewContainer) { title = SourceLookupUIMessages.DirectorySourceContainerDialog_7; } else { title = SourceLookupUIMessages.DirectorySourceContainerDialog_8; } newShell.setText(title); super.configureShell(newShell); } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.TitleAreaDialog#createContents(org.eclipse.swt.widgets.Composite) */ protected Control createContents(Composite parent) { Control c = super.createContents(parent); fDirText.setText(fDirectory); fSubfoldersButton.setSelection(fSearchSubfolders); validate(); PlatformUI.getWorkbench().getHelpSystem().setHelp(c, IDebugHelpContextIds.SELECT_DIRECTORY_SOURCE_CONTAINER_DIALOG); return c; } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#okPressed() */ protected void okPressed() { fDirectory = fDirText.getText().trim(); fSearchSubfolders = fSubfoldersButton.getSelection(); DebugUIPlugin.getDefault().getDialogSettings().put(LAST_PATH_SETTING, fDirectory); DebugUIPlugin.getDefault().getDialogSettings().put(LAST_SUBDIR_SETTING, fSearchSubfolders); super.okPressed(); } private void browse() { String last = fDirText.getText().trim(); if (last.length() == 0) { last = DebugUIPlugin.getDefault().getDialogSettings().get(LAST_PATH_SETTING); } if (last == null) { last = IInternalDebugCoreConstants.EMPTY_STRING; } DirectoryDialog dialog = new DirectoryDialog(getShell(), SWT.SINGLE); dialog.setText(SourceLookupUIMessages.DirectorySourceContainerDialog_0); dialog.setMessage(SourceLookupUIMessages.DirectorySourceContainerDialog_1); dialog.setFilterPath(last); String result = dialog.open(); if (result == null) { return; } fDirText.setText(result); } private void validate() { File file = new File(fDirText.getText().trim()); getButton(IDialogConstants.OK_ID).setEnabled(file.isDirectory() && file.exists()); } }