Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2013 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 *******************************************************************************/ package org.eclipse.jdt.debug.ui.launchConfigurations; import java.util.HashMap; import java.util.Map; import org.eclipse.core.runtime.CoreException; import org.eclipse.debug.core.ILaunchConfiguration; import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy; import org.eclipse.debug.internal.ui.SWTFactory; import org.eclipse.jdt.internal.debug.ui.IJavaDebugHelpContextIds; import org.eclipse.jdt.internal.debug.ui.JavaDebugImages; import org.eclipse.jdt.internal.debug.ui.launcher.LauncherMessages; import org.eclipse.jdt.internal.debug.ui.launcher.NameValuePairDialog; import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.viewers.ColumnWeightData; import org.eclipse.jface.viewers.ILabelProviderListener; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.jface.viewers.TableLayout; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerComparator; 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.MouseAdapter; import org.eclipse.swt.events.MouseEvent; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableColumn; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.PlatformUI; /** * This tab appears for java applet launch configurations and allows the user to edit * applet-specific attributes such as width, height, name & applet parameters. * <p> * This class may be instantiated. * </p> * @since 2.1 * @noextend This class is not intended to be sub-classed by clients. */ public class AppletParametersTab extends JavaLaunchTab { private Text fWidthText; private Text fHeightText; private Text fNameText; private Button fParametersAddButton; private Button fParametersRemoveButton; private Button fParametersEditButton; private class AppletTabListener extends SelectionAdapter implements ModifyListener { /* (non-Javadoc) * @see org.eclipse.swt.events.ModifyListener#modifyText(org.eclipse.swt.events.ModifyEvent) */ public void modifyText(ModifyEvent e) { updateLaunchConfigurationDialog(); } /* (non-Javadoc) * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent) */ @Override public void widgetSelected(SelectionEvent e) { Object source = e.getSource(); if (source == fViewer.getTable() || source == fViewer) { setParametersButtonsEnableState(); } else if (source == fParametersAddButton) { handleParametersAddButtonSelected(); } else if (source == fParametersEditButton) { handleParametersEditButtonSelected(); } else if (source == fParametersRemoveButton) { handleParametersRemoveButtonSelected(); } } } private AppletTabListener fListener = new AppletTabListener(); private static final String EMPTY_STRING = ""; //$NON-NLS-1$ /** * The default value for the 'width' attribute. */ public static final int DEFAULT_APPLET_WIDTH = 200; /** * The default value for the 'height' attribute. */ public static final int DEFAULT_APPLET_HEIGHT = 200; /** * The parameters table viewer */ private TableViewer fViewer; /** * @see org.eclipse.debug.ui.ILaunchConfigurationTab#createControl(Composite) */ public void createControl(Composite parent) { Composite comp = SWTFactory.createComposite(parent, 1, 1, GridData.FILL_HORIZONTAL); setControl(comp); PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IJavaDebugHelpContextIds.LAUNCH_CONFIGURATION_DIALOG_APPLET_PARAMETERS_TAB); Composite namecomp = SWTFactory.createComposite(comp, comp.getFont(), 4, 1, GridData.FILL_HORIZONTAL, 0, 0); SWTFactory.createLabel(namecomp, LauncherMessages.appletlauncher_argumenttab_widthlabel_text, 1); fWidthText = SWTFactory.createSingleText(namecomp, 1); fWidthText.addModifyListener(fListener); SWTFactory.createLabel(namecomp, LauncherMessages.appletlauncher_argumenttab_namelabel_text, 1); fNameText = SWTFactory.createSingleText(namecomp, 1); fNameText.addModifyListener(fListener); SWTFactory.createLabel(namecomp, LauncherMessages.appletlauncher_argumenttab_heightlabel_text, 1); fHeightText = SWTFactory.createSingleText(namecomp, 1); fHeightText.addModifyListener(fListener); Label blank = new Label(namecomp, SWT.NONE); blank.setText(EMPTY_STRING); Label hint = SWTFactory.createLabel(namecomp, LauncherMessages.AppletParametersTab__optional_applet_instance_name__1, 1); GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_CENTER); hint.setLayoutData(gd); SWTFactory.createVerticalSpacer(comp, 1); Composite paramcomp = SWTFactory.createComposite(comp, comp.getFont(), 2, 1, GridData.FILL_BOTH, 0, 0); SWTFactory.createLabel(paramcomp, LauncherMessages.appletlauncher_argumenttab_parameterslabel_text, 2); Table ptable = new Table(paramcomp, SWT.FULL_SELECTION | SWT.BORDER); fViewer = new TableViewer(ptable); gd = new GridData(GridData.FILL_BOTH); ptable.setLayoutData(gd); TableColumn column1 = new TableColumn(ptable, SWT.NONE); column1.setText(LauncherMessages.appletlauncher_argumenttab_parameterscolumn_name_text); TableColumn column2 = new TableColumn(ptable, SWT.NONE); column2.setText(LauncherMessages.appletlauncher_argumenttab_parameterscolumn_value_text); TableLayout tableLayout = new TableLayout(); ptable.setLayout(tableLayout); tableLayout.addColumnData(new ColumnWeightData(100)); tableLayout.addColumnData(new ColumnWeightData(100)); ptable.setHeaderVisible(true); ptable.setLinesVisible(true); ptable.addSelectionListener(fListener); ptable.addMouseListener(new MouseAdapter() { @Override public void mouseDoubleClick(MouseEvent e) { setParametersButtonsEnableState(); if (fParametersEditButton.isEnabled()) { handleParametersEditButtonSelected(); } } }); fViewer.setContentProvider(new IStructuredContentProvider() { public Object[] getElements(Object inputElement) { Map<?, ?> params = (Map<?, ?>) inputElement; return params.keySet().toArray(); } public void dispose() { } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } }); fViewer.setLabelProvider(new ITableLabelProvider() { public Image getColumnImage(Object element, int columnIndex) { return null; } public String getColumnText(Object element, int columnIndex) { if (columnIndex == 0) { return element.toString(); } String key = (String) element; Map<String, String> params = getViewerInput(); Object object = params.get(key); if (object != null) { return object.toString(); } return null; } public void addListener(ILabelProviderListener listener) { } public void dispose() { } public boolean isLabelProperty(Object element, String property) { return false; } public void removeListener(ILabelProviderListener listener) { } }); fViewer.setComparator(new ViewerComparator()); Composite envcomp = SWTFactory.createComposite(paramcomp, paramcomp.getFont(), 1, 1, GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL, 0, 0); fParametersAddButton = createPushButton(envcomp, LauncherMessages.appletlauncher_argumenttab_parameters_button_add_text, null); fParametersAddButton.addSelectionListener(fListener); fParametersEditButton = createPushButton(envcomp, LauncherMessages.appletlauncher_argumenttab_parameters_button_edit_text, null); fParametersEditButton.addSelectionListener(fListener); fParametersRemoveButton = createPushButton(envcomp, LauncherMessages.appletlauncher_argumenttab_parameters_button_remove_text, null); fParametersRemoveButton.addSelectionListener(fListener); setParametersButtonsEnableState(); Dialog.applyDialogFont(parent); } /** * @see org.eclipse.debug.ui.ILaunchConfigurationTab#isValid(ILaunchConfiguration) */ @Override public boolean isValid(ILaunchConfiguration launchConfig) { setErrorMessage(null); try { Integer.parseInt(getWidthText()); } catch (NumberFormatException nfe) { setErrorMessage(LauncherMessages.appletlauncher_argumenttab_width_error_notaninteger); return false; } try { Integer.parseInt(getHeightText()); } catch (NumberFormatException nfe) { setErrorMessage(LauncherMessages.appletlauncher_argumenttab_height_error_notaninteger); return false; } return true; } private void handleParametersAddButtonSelected() { NameValuePairDialog dialog = new NameValuePairDialog(getShell(), LauncherMessages.appletlauncher_argumenttab_parameters_dialog_add_title, new String[] { LauncherMessages.appletlauncher_argumenttab_parameters_dialog_add_name_text, LauncherMessages.appletlauncher_argumenttab_parameters_dialog_add_value_text }, // new String[] { EMPTY_STRING, EMPTY_STRING }); openNewParameterDialog(dialog, null); setParametersButtonsEnableState(); } private void handleParametersEditButtonSelected() { IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection(); String key = (String) selection.getFirstElement(); Map<String, String> params = getViewerInput(); String value = params.get(key); NameValuePairDialog dialog = new NameValuePairDialog(getShell(), LauncherMessages.appletlauncher_argumenttab_parameters_dialog_edit_title, new String[] { LauncherMessages.appletlauncher_argumenttab_parameters_dialog_edit_name_text, LauncherMessages.appletlauncher_argumenttab_parameters_dialog_edit_value_text }, // new String[] { key, value }); openNewParameterDialog(dialog, key); } private void handleParametersRemoveButtonSelected() { IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection(); Object[] keys = selection.toArray(); for (int i = 0; i < keys.length; i++) { String key = (String) keys[i]; Map<String, String> params = getViewerInput(); params.remove(key); } fViewer.refresh(); setParametersButtonsEnableState(); updateLaunchConfigurationDialog(); } /** * Set the enabled state of the three environment variable-related buttons based on the * selection in the Table widget. */ private void setParametersButtonsEnableState() { IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection(); int selectCount = selection.size(); if (selectCount < 1) { fParametersEditButton.setEnabled(false); fParametersRemoveButton.setEnabled(false); } else { fParametersRemoveButton.setEnabled(true); if (selectCount == 1) { fParametersEditButton.setEnabled(true); } else { fParametersEditButton.setEnabled(false); } } fParametersAddButton.setEnabled(true); } /** * Show the specified dialog and update the parameter table based on its results. * @param dialog the dialog * @param key the key to edit */ private void openNewParameterDialog(NameValuePairDialog dialog, String key) { if (dialog.open() != Window.OK) { return; } String[] nameValuePair = dialog.getNameValuePair(); Map<String, String> params = getViewerInput(); params.remove(key); params.put(nameValuePair[0], nameValuePair[1]); fViewer.refresh(); updateLaunchConfigurationDialog(); } @SuppressWarnings("unchecked") private Map<String, String> getViewerInput() { return (Map<String, String>) fViewer.getInput(); } /** * @see org.eclipse.debug.ui.ILaunchConfigurationTab#performApply(ILaunchConfigurationWorkingCopy) */ public void performApply(ILaunchConfigurationWorkingCopy configuration) { try { configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_WIDTH, Integer.parseInt(getWidthText())); } catch (NumberFormatException e) { } try { configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_HEIGHT, Integer.parseInt(getHeightText())); } catch (NumberFormatException e) { } configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_NAME, fNameText.getText()); configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_PARAMETERS, getViewerInput()); } /** * Returns the current width specified by the user * @return the width specified by the user */ private String getWidthText() { return fWidthText.getText().trim(); } /** * Returns the current height specified by the user * @return the height specified by the user */ private String getHeightText() { return fHeightText.getText().trim(); } /** * @see org.eclipse.debug.ui.ILaunchConfigurationTab#setDefaults(ILaunchConfigurationWorkingCopy) */ public void setDefaults(ILaunchConfigurationWorkingCopy configuration) { } /** * @see org.eclipse.debug.ui.ILaunchConfigurationTab#initializeFrom(ILaunchConfiguration) */ @Override public void initializeFrom(ILaunchConfiguration config) { try { fWidthText.setText(Integer.toString(config .getAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_WIDTH, DEFAULT_APPLET_WIDTH))); } catch (CoreException ce) { fWidthText.setText(Integer.toString(DEFAULT_APPLET_WIDTH)); } try { fHeightText.setText(Integer.toString(config .getAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_HEIGHT, DEFAULT_APPLET_HEIGHT))); } catch (CoreException ce) { fHeightText.setText(Integer.toString(DEFAULT_APPLET_HEIGHT)); } try { fNameText.setText(config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_NAME, LauncherMessages.appletlauncher_argumenttab_name_defaultvalue)); } catch (CoreException ce) { fNameText.setText(LauncherMessages.appletlauncher_argumenttab_name_defaultvalue); } Map<String, String> input = new HashMap<String, String>(); try { Map<String, String> params = config.getAttribute( IJavaLaunchConfigurationConstants.ATTR_APPLET_PARAMETERS, (Map<String, String>) null); if (params != null) { input.putAll(params); } } catch (CoreException e) { } fViewer.setInput(input); } /** * @see org.eclipse.debug.ui.ILaunchConfigurationTab#getName() */ public String getName() { return LauncherMessages.appletlauncher_argumenttab_name; } /** * @see org.eclipse.debug.ui.AbstractLaunchConfigurationTab#getId() * * @since 3.3 */ @Override public String getId() { return "org.eclipse.jdt.debug.ui.appletParametersTab"; //$NON-NLS-1$ } /** * @see org.eclipse.debug.ui.ILaunchConfigurationTab#getImage() */ @Override public Image getImage() { return JavaDebugImages.get(JavaDebugImages.IMG_VIEW_ARGUMENTS_TAB); } /* (non-Javadoc) * @see org.eclipse.debug.ui.ILaunchConfigurationTab#activated(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy) */ @Override public void activated(ILaunchConfigurationWorkingCopy workingCopy) { // do nothing when activated } /* (non-Javadoc) * @see org.eclipse.debug.ui.ILaunchConfigurationTab#deactivated(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy) */ @Override public void deactivated(ILaunchConfigurationWorkingCopy workingCopy) { // do nothing when de-activated } }