Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2008 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 com.siteview.mde.internal.ui.editor.monitor; import com.siteview.mde.internal.core.monitor.ImportObject; import com.siteview.mde.core.monitor.*; import org.eclipse.core.runtime.CoreException; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import com.siteview.mde.core.*; import com.siteview.mde.internal.ui.MDEPlugin; import com.siteview.mde.internal.ui.MDEUIMessages; import com.siteview.mde.internal.ui.editor.*; import com.siteview.mde.internal.ui.parts.ComboPart; import com.siteview.mde.internal.ui.parts.FormEntry; 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.widgets.*; import org.eclipse.ui.forms.*; import org.eclipse.ui.forms.widgets.FormToolkit; import org.eclipse.ui.forms.widgets.Section; public class MatchSection extends MDESection implements IPartSelectionListener { private Button fReexportButton; private Button fOptionalButton; private FormEntry fVersionText; private ComboPart fMatchCombo; protected IMonitorReference fCurrentImport; private boolean fBlockChanges = false; private boolean fAddReexport = true; public MatchSection(MDEFormPage formPage, Composite parent, boolean addReexport) { super(formPage, parent, Section.DESCRIPTION); fAddReexport = addReexport; createClient(getSection(), formPage.getEditor().getToolkit()); } public void commit(boolean onSave) { if (isDirty() == false) return; if (fCurrentImport != null && fVersionText.getText().isEnabled()) { fVersionText.commit(); String value = fVersionText.getValue(); int match = IMatchRules.NONE; if (value != null && value.length() > 0) { applyVersion(value); match = getMatch(); } applyMatch(match); } super.commit(onSave); } public void cancelEdit() { fVersionText.cancelEdit(); super.cancelEdit(); } public void createClient(Section section, FormToolkit toolkit) { Composite container = toolkit.createComposite(section); container.setLayout(FormLayoutFactory.createSectionClientGridLayout(false, 2)); if (fAddReexport) { createOptionalButton(toolkit, container); createReexportButton(toolkit, container); } fVersionText = new FormEntry(container, toolkit, MDEUIMessages.ManifestEditor_MatchSection_version, null, false); fVersionText.setFormEntryListener( new FormEntryAdapter(this, getPage().getEditor().getEditorSite().getActionBars()) { public void textValueChanged(FormEntry text) { applyVersion(text.getValue()); } public void textDirty(FormEntry text) { if (fBlockChanges) return; markDirty(); fBlockChanges = true; resetMatchCombo(fCurrentImport); fBlockChanges = false; } }); Label matchLabel = toolkit.createLabel(container, MDEUIMessages.ManifestEditor_PluginSpecSection_versionMatch); matchLabel.setForeground(toolkit.getColors().getColor(IFormColors.TITLE)); fMatchCombo = new ComboPart(); fMatchCombo.createControl(container, toolkit, SWT.READ_ONLY); fMatchCombo.add(""); //$NON-NLS-1$ fMatchCombo.add(MDEUIMessages.ManifestEditor_MatchSection_equivalent); fMatchCombo.add(MDEUIMessages.ManifestEditor_MatchSection_compatible); fMatchCombo.add(MDEUIMessages.ManifestEditor_MatchSection_perfect); fMatchCombo.add(MDEUIMessages.ManifestEditor_MatchSection_greater); fMatchCombo.getControl().setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); fMatchCombo.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { if (!fBlockChanges) { applyMatch(fMatchCombo.getSelectionIndex()); } } }); toolkit.paintBordersFor(container); initialize(); update((IMonitorReference) null); section.setClient(container); section.setText(MDEUIMessages.MatchSection_title); section.setDescription(MDEUIMessages.MatchSection_desc); section.setLayout(FormLayoutFactory.createClearGridLayout(false, 1)); section.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_BEGINNING)); } private void createReexportButton(FormToolkit toolkit, Composite container) { fReexportButton = toolkit.createButton(container, MDEUIMessages.ManifestEditor_MatchSection_reexport, SWT.CHECK); fReexportButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { if (!fBlockChanges && fCurrentImport instanceof IMonitorImport) { try { IMonitorImport iimport = (IMonitorImport) fCurrentImport; iimport.setReexported(fReexportButton.getSelection()); } catch (CoreException ex) { MDEPlugin.logException(ex); } } } }); GridData gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalSpan = 2; fReexportButton.setLayoutData(gd); } private void createOptionalButton(FormToolkit toolkit, Composite container) { fOptionalButton = toolkit.createButton(container, MDEUIMessages.ManifestEditor_MatchSection_optional, SWT.CHECK); fOptionalButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { if (fBlockChanges) return; if (!fBlockChanges && fCurrentImport instanceof IMonitorImport) { try { IMonitorImport iimport = (IMonitorImport) fCurrentImport; iimport.setOptional(fOptionalButton.getSelection()); } catch (CoreException ex) { MDEPlugin.logException(ex); } } } }); GridData gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalSpan = 2; fOptionalButton.setLayoutData(gd); } private void applyVersion(String version) { try { if (fCurrentImport != null) { fCurrentImport.setVersion(version); } } catch (CoreException ex) { MDEPlugin.logException(ex); } } private void applyMatch(int match) { try { if (fCurrentImport != null) { fCurrentImport.setMatch(match); } } catch (CoreException ex) { MDEPlugin.logException(ex); } } private int getMatch() { return fMatchCombo.getSelectionIndex(); } public void dispose() { IModel model = (IModel) getPage().getModel(); if (model instanceof IModelChangeProvider) ((IModelChangeProvider) model).removeModelChangedListener(this); super.dispose(); } private void initialize() { IBaseModel model = getPage().getModel(); if (model instanceof IModelChangeProvider) ((IModelChangeProvider) model).addModelChangedListener(this); } public void modelChanged(IModelChangedEvent e) { if (e.getChangeType() == IModelChangedEvent.REMOVE) { Object obj = e.getChangedObjects()[0]; if (obj.equals(fCurrentImport)) { update((IMonitorReference) null); } } else if (e.getChangeType() == IModelChangedEvent.CHANGE) { Object object = e.getChangedObjects()[0]; if (object.equals(fCurrentImport)) { update(fCurrentImport); } } } public void selectionChanged(IFormPart part, ISelection selection) { IStructuredSelection ssel = (IStructuredSelection) selection; if (ssel.size() == 1) { Object changeObject = ((IStructuredSelection) selection).getFirstElement(); IMonitorReference input = null; if (changeObject instanceof ImportObject) input = ((ImportObject) changeObject).getImport(); else if (changeObject instanceof IMonitorReference) input = (IMonitorReference) changeObject; update(input); } else { update(null); } } private void resetMatchCombo(IMonitorReference iimport) { fMatchCombo.getControl().setEnabled(isEditable() && fVersionText.getText().getText().length() > 0); setMatchCombo(iimport); } private void setMatchCombo(IMonitorReference iimport) { fMatchCombo.select(iimport != null ? iimport.getMatch() : IMatchRules.NONE); } protected void update(IMonitorReference iimport) { fBlockChanges = true; if (iimport == null) { if (fAddReexport) { fOptionalButton.setSelection(false); fOptionalButton.setEnabled(false); fReexportButton.setSelection(false); fReexportButton.setEnabled(false); } fVersionText.setValue(null, true); fVersionText.setEditable(false); fMatchCombo.getControl().setEnabled(false); fMatchCombo.setText(""); //$NON-NLS-1$ fCurrentImport = null; fBlockChanges = false; return; } if (fCurrentImport != null && !iimport.equals(fCurrentImport) && isEditable()) { commit(false); } fCurrentImport = iimport; if (fCurrentImport instanceof IMonitorImport) { IMonitorImport pimport = (IMonitorImport) fCurrentImport; fOptionalButton.setEnabled(isEditable()); fOptionalButton.setSelection(pimport.isOptional()); fReexportButton.setEnabled(isEditable()); fReexportButton.setSelection(pimport.isReexported()); } fVersionText.setEditable(isEditable()); fVersionText.setValue(fCurrentImport.getVersion()); resetMatchCombo(fCurrentImport); fBlockChanges = false; } }