Java tutorial
/********************************************************************** * Copyright (c) 2015 cole Polytechnique de Montral, Ericsson * * 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: * Contributors: * Patrick-Jeffrey Pollo Guilbert, William Enright, * William Tri-Khiem Truong - Initial API and implementation * Bernd Hufmann - Renamed from ProfileHandler and redesign **********************************************************************/ package org.eclipse.tracecompass.internal.lttng2.control.ui.views.dialogs; import java.io.File; import java.util.ArrayList; import java.util.List; import org.eclipse.core.filesystem.EFS; import org.eclipse.core.filesystem.IFileStore; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.preference.PreferenceDialog; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.CheckboxTreeViewer; import org.eclipse.jface.viewers.ICheckStateListener; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.remote.core.IRemoteConnection; import org.eclipse.remote.ui.widgets.RemoteResourceBrowserWidget; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; 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.Shell; import org.eclipse.tracecompass.internal.lttng2.control.ui.Activator; import org.eclipse.tracecompass.internal.lttng2.control.ui.views.messages.Messages; import org.eclipse.tracecompass.internal.lttng2.control.ui.views.preferences.ControlRemoteProfilesPreferencePage; import org.eclipse.tracecompass.internal.lttng2.control.ui.views.preferences.LTTngProfileViewer; import org.eclipse.tracecompass.internal.lttng2.control.ui.views.service.LTTngControlServiceConstants; import org.eclipse.ui.dialogs.PreferencesUtil; /** * Dialog box for collecting parameter for loading a session. * * @author Bernd Hufmann * @author Patrick-Jeffrey Pollo Guilbert * @author William Enright * @author William Tri-Khiem Truong * */ public class LoadDialog extends TitleAreaDialog implements ILoadDialog { // ------------------------------------------------------------------------ // Constants // ------------------------------------------------------------------------ /** The icon file for this dialog box. */ public static final String IMPORT_ICON_FILE = "icons/elcl16/import_button.png"; //$NON-NLS-1$ // ------------------------------------------------------------------------ // Constants // ------------------------------------------------------------------------ /** * The dialog composite. */ private Composite fDialogComposite = null; private Button fLocalButton = null; private Button fRemoteButton = null; private Composite fLocalComposite = null; private CheckboxTreeViewer fFolderViewer; private Button fForceButton = null; private RemoteResourceBrowserWidget fFileWidget; private IRemoteConnection fConnection = null; private List<IFileStore> fLocalFiles = null; private List<IFileStore> fRemoteFiles = null; private boolean fIsForce = true; // ------------------------------------------------------------------------ // Constructors // ------------------------------------------------------------------------ /** * Constructor * * @param shell * - a shell for the display of the dialog */ public LoadDialog(Shell shell) { super(shell); setShellStyle(SWT.RESIZE | getShellStyle()); } @Override public List<IFileStore> getRemoteResources() { return fRemoteFiles; } @Override public List<IFileStore> getLocalResources() { return fLocalFiles; } @Override public boolean isForce() { return fIsForce; } @Override public void initialize(IRemoteConnection connection) { fConnection = connection; fIsForce = true; fRemoteFiles = null; fLocalFiles = null; } // ------------------------------------------------------------------------ // Operations // ------------------------------------------------------------------------ @Override protected void configureShell(Shell newShell) { super.configureShell(newShell); newShell.setText(Messages.TraceControl_LoadDialogTitle); newShell.setImage(Activator.getDefault().loadIcon(IMPORT_ICON_FILE)); } @Override protected Control createDialogArea(Composite parent) { // Main dialog panel fDialogComposite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(1, true); fDialogComposite.setLayout(layout); GridData data = new GridData(GridData.FILL_BOTH); data.heightHint = 300; fDialogComposite.setLayoutData(data); createSelectionGroup(); createOptionComposite(); fLocalComposite = null; fFileWidget = null; createLocalComposite(); setMessage(Messages.TraceControl_SelectProfileText); return fDialogComposite; } private void createSelectionGroup() { Composite group = new Composite(fDialogComposite, SWT.BORDER); group.setLayout(new GridLayout(2, true)); group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); fLocalButton = new Button(group, SWT.RADIO); fLocalButton.setText(Messages.TraceControl_LocalButtonText); fLocalButton.setLayoutData(new GridData(GridData.FILL_BOTH)); fLocalButton.setSelection(true); fRemoteButton = new Button(group, SWT.RADIO); fRemoteButton.setText(Messages.TraceControl_RemoteButtonText); fRemoteButton.setLayoutData(new GridData(GridData.FILL_BOTH)); fLocalButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { if (fLocalButton.getSelection()) { disposeRemoteComposite(); createLocalComposite(); fRemoteFiles = null; fDialogComposite.layout(); enableLocalButtons(); } } }); fRemoteButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { if (fRemoteButton.getSelection()) { disposeLocalComposite(); createRemoteComposite(); fLocalFiles = null; fDialogComposite.layout(); enableRemoteButtons(); } } }); } private void createLocalComposite() { if (fLocalComposite == null) { fLocalComposite = new Composite(fDialogComposite, SWT.BORDER); fLocalComposite.setLayout(new GridLayout(2, false)); fLocalComposite.setLayoutData(new GridData(GridData.FILL_BOTH)); fFolderViewer = LTTngProfileViewer.createLTTngProfileViewer(fLocalComposite, SWT.NONE); fFolderViewer.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); fFolderViewer.addCheckStateListener(new ICheckStateListener() { @Override public void checkStateChanged(CheckStateChangedEvent event) { enableLocalButtons(); } }); } } /** * Disposes the remote composite (if existing) */ private void disposeLocalComposite() { if (fLocalComposite != null) { fLocalComposite.dispose(); fLocalComposite = null; } } private void createRemoteComposite() { if (fFileWidget == null) { fFileWidget = new RemoteResourceBrowserWidget(fDialogComposite, SWT.BORDER, RemoteResourceBrowserWidget.SHOW_HIDDEN_CHECKBOX); fFileWidget.setLayoutData(new GridData(GridData.FILL_BOTH)); fFileWidget.setInitialPath(LTTngControlServiceConstants.DEFAULT_PATH); fFileWidget.setConnection(fConnection); fFileWidget.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { enableRemoteButtons(); } }); getButton(IDialogConstants.OK_ID).setEnabled(true); } } /** * Disposes the remote composite (if existing) */ private void disposeRemoteComposite() { if (fFileWidget != null) { fFileWidget.dispose(); fFileWidget = null; } } private void createOptionComposite() { Composite group = new Composite(fDialogComposite, SWT.BORDER); group.setLayout(new GridLayout(1, true)); group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); fForceButton = new Button(group, SWT.CHECK); fForceButton.setText(Messages.TraceControl_ForceButtonText); fForceButton.setSelection(true); } private void enableLocalButtons() { Object[] checked = fFolderViewer.getCheckedElements(); boolean enabled = (checked != null) && (checked.length > 0); Button okButton = getButton(IDialogConstants.OK_ID); if (okButton != null) { okButton.setEnabled(enabled); } } private void enableRemoteButtons() { List<IFileStore> resources = fFileWidget.getResources(); boolean enabled = (resources != null) && (resources.size() > 0); Button okButton = getButton(IDialogConstants.OK_ID); if (okButton != null) { okButton.setEnabled(enabled); } } @Override protected void createButtonsForButtonBar(final Composite parent) { createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false); Button manageButton = createButton(parent, IDialogConstants.CLIENT_ID + 1, Messages.TraceControl_ManageButtonText, false); manageButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { PreferenceDialog dialog = PreferencesUtil.createPreferenceDialogOn(parent.getShell(), ControlRemoteProfilesPreferencePage.ID, new String[] { ControlRemoteProfilesPreferencePage.ID }, null); dialog.open(); if (fLocalComposite != null) { fFolderViewer.setInput(LTTngProfileViewer.getViewerInput()); enableLocalButtons(); } } }); Button button = createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, false); button.setEnabled(false); } @Override protected void okPressed() { fIsForce = fForceButton.getSelection(); if (fFileWidget != null) { fRemoteFiles = fFileWidget.getResources(); if (fRemoteFiles.size() > 0) { super.okPressed(); } return; } Object[] files = fFolderViewer.getCheckedElements(); List<IFileStore> stores = new ArrayList<>(); for (Object file : files) { if (file instanceof File) { stores.add(EFS.getLocalFileSystem().fromLocalFile((File) file)); } } if (stores.size() != 0) { fLocalFiles = stores; super.okPressed(); } } }