Java tutorial
/******************************************************************************* * Copyright (c) 2004, 2005 QNX Software Systems 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: * QNX Software Systems - Initial API and implementation *******************************************************************************/ package org.eclipse.cdt.debug.internal.ui.sourcelookup; import java.io.File; import java.util.List; import org.eclipse.cdt.debug.core.sourcelookup.MappingSourceContainer; import org.eclipse.cdt.debug.internal.core.sourcelookup.MapEntrySourceContainer; import org.eclipse.cdt.debug.internal.ui.CDebugImages; import org.eclipse.cdt.debug.internal.ui.ICDebugHelpContextIds; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.Path; import org.eclipse.debug.core.sourcelookup.ISourceContainer; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.window.Window; 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.events.SelectionListener; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontMetrics; import org.eclipse.swt.graphics.GC; import org.eclipse.swt.graphics.Image; 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; import org.eclipse.ui.model.WorkbenchLabelProvider; /** * A dialog for editing a path mapping source container. */ public class PathMappingDialog extends TitleAreaDialog { class MapEntryDialog extends TitleAreaDialog { private MapEntrySourceContainer fEntry; protected Text fBackendPathText; protected Text fLocalPathText; /** * Constructor for MapEntryDialog. */ public MapEntryDialog(Shell parentShell) { super(parentShell); fEntry = null; } /** * Constructor for MapEntryDialog. */ public MapEntryDialog(Shell parentShell, MapEntrySourceContainer entry) { super(parentShell); fEntry = entry; } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite) */ @Override protected Control createDialogArea(Composite parent) { setTitle(SourceLookupUIMessages.PathMappingDialog_0); setTitleImage(CDebugImages.get(CDebugImages.IMG_WIZBAN_PATH_MAP_ENTRY)); Font font = parent.getFont(); Composite composite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); layout.numColumns = 2; 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); GridData data = new GridData(GridData.FILL_BOTH); composite.setLayoutData(data); composite.setFont(font); Dialog.applyDialogFont(composite); PlatformUI.getWorkbench().getHelpSystem().setHelp(getShell(), ICDebugHelpContextIds.SOURCE_PATH_MAP_ENTRY_DIALOG); setMessage(null); Label label = new Label(composite, SWT.LEFT); label.setText(SourceLookupUIMessages.PathMappingDialog_1); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 2; label.setLayoutData(data); label.setFont(font); fBackendPathText = new Text(composite, SWT.SINGLE | SWT.BORDER); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 2; fBackendPathText.setLayoutData(data); fBackendPathText.setFont(font); fBackendPathText.addModifyListener(new ModifyListener() { @Override public void modifyText(ModifyEvent e) { update(); } }); label = new Label(composite, SWT.LEFT); label.setText(SourceLookupUIMessages.PathMappingDialog_2); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 2; label.setLayoutData(data); label.setFont(font); fLocalPathText = new Text(composite, SWT.SINGLE | SWT.BORDER); data = new GridData(GridData.FILL_HORIZONTAL); fLocalPathText.setLayoutData(data); fLocalPathText.setFont(font); fLocalPathText.addModifyListener(new ModifyListener() { @Override public void modifyText(ModifyEvent e) { update(); } }); Button button = new Button(composite, SWT.PUSH); button.setFont(font); button.setText(SourceLookupUIMessages.PathMappingDialog_3); button.addSelectionListener(new SelectionListener() { @Override public void widgetSelected(SelectionEvent e) { DirectoryDialog dialog = new DirectoryDialog(MapEntryDialog.this.getShell()); String path = dialog.open(); if (path != null) { fLocalPathText.setText(path); } } @Override public void widgetDefaultSelected(SelectionEvent e) { } }); return composite; } @Override protected Control createContents(Composite parent) { Control control = super.createContents(parent); initialize(); update(); return control; } @Override protected void configureShell(Shell newShell) { newShell.setText(SourceLookupUIMessages.PathMappingDialog_4); super.configureShell(newShell); } private void initialize() { if (fEntry != null) { fBackendPathText.setText(fEntry.getBackendPath().toOSString()); fLocalPathText.setText(fEntry.getLocalPath().toOSString()); } } protected void update() { boolean isOk = updateErrorMessage(); Button ok = getButton(IDialogConstants.OK_ID); if (ok != null) ok.setEnabled(isOk); } protected boolean updateErrorMessage() { setErrorMessage(null); String backendText = fBackendPathText.getText().trim(); if (backendText.length() == 0) { setErrorMessage(SourceLookupUIMessages.PathMappingDialog_5); return false; } if (!new Path(backendText).isValidPath(backendText)) { setErrorMessage(SourceLookupUIMessages.PathMappingDialog_6); return false; } String localText = fLocalPathText.getText().trim(); if (localText.length() == 0) { setErrorMessage(SourceLookupUIMessages.PathMappingDialog_7); return false; } File localPath = new File(localText); if (!localPath.exists()) { setErrorMessage(SourceLookupUIMessages.PathMappingDialog_8); return false; } if (!localPath.isDirectory()) { setErrorMessage(SourceLookupUIMessages.PathMappingDialog_9); return false; } if (!localPath.isAbsolute()) { setErrorMessage(SourceLookupUIMessages.PathMappingDialog_10); return false; } return true; } protected IPath getBackendPath() { return new Path(fBackendPathText.getText().trim()); } protected IPath getLocalPath() { return new Path(fLocalPathText.getText().trim()); } @Override protected void okPressed() { if (fEntry == null) { fEntry = new MapEntrySourceContainer(); fMapping.addMapEntry(fEntry); } fEntry.setBackendPath(getBackendPath()); fEntry.setLocalPath(getLocalPath()); super.okPressed(); } } class PathMappingLabelProvider extends LabelProvider { private ILabelProvider fLabelProvider = null; /* (non-Javadoc) * @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object) */ @Override public Image getImage(Object element) { Image image = getWorkbenchLabelProvider().getImage(element); if (image != null) { return image; } return super.getImage(element); } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object) */ @Override public String getText(Object element) { String label = getWorkbenchLabelProvider().getText(element); if (label == null || label.length() == 0) { if (element instanceof ISourceContainer) { return ((ISourceContainer) element).getName(); } } else { return label; } return super.getText(element); } private ILabelProvider getWorkbenchLabelProvider() { if (fLabelProvider == null) { fLabelProvider = new WorkbenchLabelProvider(); } return fLabelProvider; } /* (non-Javadoc) * @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose() */ @Override public void dispose() { super.dispose(); if (fLabelProvider != null) { fLabelProvider.dispose(); } } } class ContentProvider implements IStructuredContentProvider { /* (non-Javadoc) * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) */ @Override public Object[] getElements(Object input) { if (input instanceof MappingSourceContainer) { try { return ((MappingSourceContainer) input).getSourceContainers(); } catch (CoreException e) { setErrorMessage(e.getMessage()); } } return null; } /* (non-Javadoc) * @see org.eclipse.jface.viewers.IContentProvider#dispose() */ @Override public void dispose() { } /* (non-Javadoc) * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object) */ @Override public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } } private MappingSourceContainer fOriginalMapping; protected MappingSourceContainer fMapping; private TableViewer fViewer; private Text fNameText; private Button fAddButton; private Button fEditButton; private Button fRemoveButton; public PathMappingDialog(Shell parentShell, MappingSourceContainer mapping) { super(parentShell); fOriginalMapping = mapping; fMapping = fOriginalMapping.copy(); } /* (non-Javadoc) * @see org.eclipse.jface.window.Window#createContents(org.eclipse.swt.widgets.Composite) */ @Override protected Control createContents(Composite parent) { Control control = super.createContents(parent); updateButtons(); return control; } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.TitleAreaDialog#createDialogArea(org.eclipse.swt.widgets.Composite) */ @Override protected Control createDialogArea(Composite parent) { setTitle(SourceLookupUIMessages.PathMappingDialog_11); setTitleImage(CDebugImages.get(CDebugImages.IMG_WIZBAN_PATH_MAPPING)); Font font = parent.getFont(); Composite composite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); layout.numColumns = 2; 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); GridData data = new GridData(GridData.FILL_BOTH); composite.setLayoutData(data); composite.setFont(font); Dialog.applyDialogFont(composite); PlatformUI.getWorkbench().getHelpSystem().setHelp(getShell(), ICDebugHelpContextIds.SOURCE_PATH_MAPPING_DIALOG); Composite nameComp = new Composite(composite, SWT.NONE); layout = new GridLayout(); layout.numColumns = 2; nameComp.setLayout(layout); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 2; nameComp.setLayoutData(data); nameComp.setFont(font); Label label = new Label(nameComp, SWT.LEFT); data = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING); label.setLayoutData(data); label.setFont(font); label.setText(SourceLookupUIMessages.PathMappingDialog_12); fNameText = new Text(nameComp, SWT.SINGLE | SWT.BORDER); data = new GridData(GridData.FILL_HORIZONTAL); fNameText.setLayoutData(data); fNameText.setFont(font); fNameText.setText(getMapping().getName()); fNameText.addModifyListener(new ModifyListener() { @Override public void modifyText(ModifyEvent e) { } }); fViewer = createViewer(composite); data = new GridData(GridData.FILL_BOTH); fViewer.getControl().setLayoutData(data); fViewer.getControl().setFont(font); fViewer.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { updateButtons(); } }); Composite buttonComp = new Composite(composite, SWT.NONE); GridLayout buttonLayout = new GridLayout(); buttonLayout.marginHeight = 0; buttonLayout.marginWidth = 0; buttonComp.setLayout(buttonLayout); data = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL); buttonComp.setLayoutData(data); buttonComp.setFont(font); GC gc = new GC(parent); gc.setFont(parent.getFont()); FontMetrics fontMetrics = gc.getFontMetrics(); gc.dispose(); fAddButton = createPushButton(buttonComp, SourceLookupUIMessages.PathMappingDialog_13, fontMetrics); fAddButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent evt) { MapEntryDialog dialog = new MapEntryDialog(getShell()); if (dialog.open() == Window.OK) { getViewer().refresh(); } } }); fEditButton = createPushButton(buttonComp, SourceLookupUIMessages.PathMappingDialog_14, fontMetrics); fEditButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent evt) { MapEntrySourceContainer[] entries = getSelection(); if (entries.length > 0) { MapEntryDialog dialog = new MapEntryDialog(getShell(), entries[0]); if (dialog.open() == Window.OK) { getViewer().refresh(); } } } }); fRemoveButton = createPushButton(buttonComp, SourceLookupUIMessages.PathMappingDialog_15, fontMetrics); fRemoveButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent evt) { MapEntrySourceContainer[] entries = getSelection(); for (int i = 0; i < entries.length; ++i) { fMapping.removeMapEntry(entries[i]); } getViewer().refresh(); } }); setMessage(null); fViewer.setInput(fMapping); return composite; } private TableViewer createViewer(Composite parent) { TableViewer viewer = new TableViewer(parent); viewer.setContentProvider(new ContentProvider()); viewer.setLabelProvider(new PathMappingLabelProvider()); return viewer; } protected MappingSourceContainer getMapping() { return fOriginalMapping; } protected Button createPushButton(Composite parent, String label, FontMetrics fontMetrics) { Button button = new Button(parent, SWT.PUSH); button.setFont(parent.getFont()); button.setText(label); GridData gd = getButtonGridData(button, fontMetrics); button.setLayoutData(gd); return button; } private GridData getButtonGridData(Button button, FontMetrics fontMetrics) { GridData gd = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_BEGINNING); int widthHint = Dialog.convertHorizontalDLUsToPixels(fontMetrics, IDialogConstants.BUTTON_WIDTH); gd.widthHint = Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x); return gd; } /* (non-Javadoc) * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell) */ @Override protected void configureShell(Shell newShell) { newShell.setText(SourceLookupUIMessages.PathMappingDialog_16); super.configureShell(newShell); } protected Viewer getViewer() { return fViewer; } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#okPressed() */ @Override protected void okPressed() { fOriginalMapping.clear(); fOriginalMapping.setName(fNameText.getText().trim()); try { fOriginalMapping.addMapEntries((MapEntrySourceContainer[]) fMapping.getSourceContainers()); } catch (CoreException e) { } fMapping.dispose(); super.okPressed(); } protected MapEntrySourceContainer[] getSelection() { MapEntrySourceContainer[] result = new MapEntrySourceContainer[0]; ISelection s = getViewer().getSelection(); if (s instanceof IStructuredSelection) { int size = ((IStructuredSelection) s).size(); List<?> list = ((IStructuredSelection) s).toList(); result = list.toArray(new MapEntrySourceContainer[size]); } return result; } protected void updateButtons() { MapEntrySourceContainer[] entries = getSelection(); if (fEditButton != null) { fEditButton.setEnabled(entries.length == 1); } if (fRemoveButton != null) { fRemoveButton.setEnabled(entries.length > 0); } } }