Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2011 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.feature; import com.siteview.mde.core.monitor.*; import java.util.ArrayList; import java.util.Iterator; import org.eclipse.core.runtime.CoreException; import org.eclipse.jface.action.*; import org.eclipse.jface.viewers.*; import org.eclipse.jface.window.Window; import com.siteview.mde.core.IModelChangedEvent; import com.siteview.mde.internal.core.*; import com.siteview.mde.internal.core.feature.FeatureImport; import com.siteview.mde.internal.core.ifeature.*; import com.siteview.mde.internal.ui.MDEPlugin; import com.siteview.mde.internal.ui.MDEUIMessages; import com.siteview.mde.internal.ui.dialogs.FeatureSelectionDialog; import com.siteview.mde.internal.ui.dialogs.PluginSelectionDialog; import com.siteview.mde.internal.ui.editor.*; import com.siteview.mde.internal.ui.editor.actions.SortAction; import com.siteview.mde.internal.ui.elements.DefaultContentProvider; import com.siteview.mde.internal.ui.parts.TablePart; import com.siteview.mde.internal.ui.wizards.ListUtil; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.BusyIndicator; import org.eclipse.swt.dnd.Clipboard; import org.eclipse.swt.events.DisposeEvent; import org.eclipse.swt.events.DisposeListener; import org.eclipse.swt.graphics.Cursor; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.*; import org.eclipse.ui.IEditorSite; import org.eclipse.ui.IWorkbenchActionConstants; import org.eclipse.ui.actions.ActionFactory; import org.eclipse.ui.forms.widgets.FormToolkit; import org.eclipse.ui.forms.widgets.Section; public class RequiresSection extends TableSection implements IMonitorModelListener, IFeatureModelListener { private Button fSyncButton; private TableViewer fPluginViewer; private Action fDeleteAction; private SortAction fSortAction; class ImportContentProvider extends DefaultContentProvider implements IStructuredContentProvider { public Object[] getElements(Object parent) { if (parent instanceof IFeature) { IFeatureImport[] imports = ((IFeature) parent).getImports(); ArrayList displayable = new ArrayList(); for (int i = 0; i < imports.length; i++) { if (imports[i].isPatch()) continue; displayable.add(imports[i]); } return displayable.toArray(); } return new Object[0]; } } public RequiresSection(FeatureDependenciesPage page, Composite parent) { super(page, parent, Section.DESCRIPTION, new String[] { MDEUIMessages.FeatureEditor_RequiresSection_plugin, MDEUIMessages.FeatureEditor_RequiresSection_feature, null, MDEUIMessages.FeatureEditor_RequiresSection_compute }); getSection().setText(MDEUIMessages.FeatureEditor_RequiresSection_title); getSection().setDescription(MDEUIMessages.FeatureEditor_RequiresSection_desc); getTablePart().setEditable(false); } public void commit(boolean onSave) { super.commit(onSave); } public void createClient(Section section, FormToolkit toolkit) { section.setLayout(FormLayoutFactory.createClearGridLayout(false, 1)); GridData data = new GridData(GridData.FILL_BOTH); section.setLayoutData(data); Composite container = createClientContainer(section, 2, toolkit); fSyncButton = toolkit.createButton(container, MDEUIMessages.FeatureEditor_RequiresSection_sync, SWT.CHECK); // syncButton.setSelection(true); GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL); gd.horizontalSpan = 2; fSyncButton.setLayoutData(gd); createViewerPartControl(container, SWT.MULTI, 2, toolkit); TablePart tablePart = getTablePart(); fPluginViewer = tablePart.getTableViewer(); fPluginViewer.setContentProvider(new ImportContentProvider()); fPluginViewer.setComparator(ListUtil.NAME_COMPARATOR); fPluginViewer.setLabelProvider(MDEPlugin.getDefault().getLabelProvider()); fDeleteAction = new Action() { public void run() { handleDelete(); } }; fDeleteAction.setText(MDEUIMessages.Actions_delete_label); toolkit.paintBordersFor(container); section.setClient(container); initialize(); createSectionToolbar(section, toolkit); } /** * @param section * @param toolkit */ private void createSectionToolbar(Section section, FormToolkit toolkit) { ToolBarManager toolBarManager = new ToolBarManager(SWT.FLAT); ToolBar toolbar = toolBarManager.createControl(section); final Cursor handCursor = new Cursor(Display.getCurrent(), SWT.CURSOR_HAND); toolbar.setCursor(handCursor); // Cursor needs to be explicitly disposed toolbar.addDisposeListener(new DisposeListener() { public void widgetDisposed(DisposeEvent e) { if ((handCursor != null) && (handCursor.isDisposed() == false)) { handCursor.dispose(); } } }); // Add sort action to the tool bar fSortAction = new SortAction(getStructuredViewerPart().getViewer(), MDEUIMessages.FeatureEditor_RequiresSection_sortAlpha, ListUtil.NAME_COMPARATOR, null, null); toolBarManager.add(fSortAction); toolBarManager.update(true); section.setTextClient(toolbar); } protected void buttonSelected(int index) { switch (index) { case 0: handleNewPlugin(); break; case 1: handleNewFeature(); break; case 2: break; case 3: recomputeImports(); break; } } private void handleNewPlugin() { BusyIndicator.showWhile(fPluginViewer.getTable().getDisplay(), new Runnable() { public void run() { IMonitorModelBase[] allModels = MonitorRegistry.getActiveModels(); ArrayList newModels = new ArrayList(); for (int i = 0; i < allModels.length; i++) { if (canAdd(allModels[i])) newModels.add(allModels[i]); } IMonitorModelBase[] candidateModels = (IMonitorModelBase[]) newModels .toArray(new IMonitorModelBase[newModels.size()]); PluginSelectionDialog dialog = new PluginSelectionDialog(fPluginViewer.getTable().getShell(), candidateModels, true); if (dialog.open() == Window.OK) { Object[] models = dialog.getResult(); try { doAdd(models); } catch (CoreException e) { MDEPlugin.log(e); } } } }); } private boolean canAdd(IMonitorModelBase candidate) { IMonitorBase plugin = candidate.getMonitorBase(); if (candidate.isFragmentModel()) return false; IFeatureModel model = (IFeatureModel) getPage().getModel(); IFeatureImport[] imports = model.getFeature().getImports(); for (int i = 0; i < imports.length; i++) { IFeatureImport fimport = imports[i]; if (plugin.getId().equals(fimport.getId())) return false; } // don't show plug-ins that are listed in this feature IFeaturePlugin[] fplugins = model.getFeature().getPlugins(); for (int i = 0; i < fplugins.length; i++) { IFeaturePlugin fplugin = fplugins[i]; if (plugin.getId().equals(fplugin.getId())) return false; } return true; } private void handleNewFeature() { BusyIndicator.showWhile(fPluginViewer.getTable().getDisplay(), new Runnable() { public void run() { IFeatureModel[] allModels = MDECore.getDefault().getFeatureModelManager().getModels(); ArrayList newModels = new ArrayList(); for (int i = 0; i < allModels.length; i++) { if (canAdd(allModels[i])) newModels.add(allModels[i]); } IFeatureModel[] candidateModels = (IFeatureModel[]) newModels .toArray(new IFeatureModel[newModels.size()]); FeatureSelectionDialog dialog = new FeatureSelectionDialog(fPluginViewer.getTable().getShell(), candidateModels, true); if (dialog.open() == Window.OK) { Object[] models = dialog.getResult(); try { doAdd(models); } catch (CoreException e) { MDECore.log(e); } } } }); } private void doAdd(Object[] candidates) throws CoreException { IFeatureModel model = (IFeatureModel) getPage().getModel(); IFeature feature = model.getFeature(); IFeatureImport[] added = new IFeatureImport[candidates.length]; for (int i = 0; i < candidates.length; i++) { FeatureImport fimport = (FeatureImport) model.getFactory().createImport(); if (candidates[i] instanceof IFeatureModel) { IFeatureModel candidate = (IFeatureModel) candidates[i]; fimport.loadFrom(candidate.getFeature()); } else { // instanceof IPluginModelBase IMonitorModelBase candidate = (IMonitorModelBase) candidates[i]; IMonitorBase pluginBase = candidate.getMonitorBase(); fimport.setId(pluginBase.getId()); } added[i] = fimport; } feature.addImports(added); } private boolean canAdd(IFeatureModel candidate) { IFeature cfeature = candidate.getFeature(); IFeatureModel model = (IFeatureModel) getPage().getModel(); IFeature feature = model.getFeature(); if (cfeature.getId().equals(feature.getId()) && cfeature.getVersion().equals(feature.getVersion())) { return false; } IFeatureImport[] features = feature.getImports(); for (int i = 0; i < features.length; i++) { if (features[i].getId().equals(cfeature.getId()) && features[i].getVersion() != null && features[i].getVersion().equals(cfeature.getVersion())) return false; } return true; } private void handleDelete() { IFeatureModel model = (IFeatureModel) getPage().getModel(); if (!model.isEditable()) { return; } IFeature feature = model.getFeature(); IStructuredSelection selection = (IStructuredSelection) fPluginViewer.getSelection(); if (selection.isEmpty()) return; try { IFeatureImport[] deleted = new IFeatureImport[selection.size()]; int i = 0; for (Iterator iter = selection.iterator(); iter.hasNext();) { IFeatureImport iimport = (IFeatureImport) iter.next(); deleted[i++] = iimport; } feature.removeImports(deleted); } catch (CoreException e) { MDEPlugin.logException(e); } } private void handleSelectAll() { IStructuredContentProvider provider = (IStructuredContentProvider) fPluginViewer.getContentProvider(); Object[] elements = provider.getElements(fPluginViewer.getInput()); StructuredSelection ssel = new StructuredSelection(elements); fPluginViewer.setSelection(ssel); } public void dispose() { IFeatureModel model = (IFeatureModel) getPage().getModel(); if (model != null) model.removeModelChangedListener(this); MDECore.getDefault().getModelManager().removePluginModelListener(this); MDECore.getDefault().getFeatureModelManager().removeFeatureModelListener(this); super.dispose(); } public boolean doGlobalAction(String actionId) { if (actionId.equals(ActionFactory.DELETE.getId())) { BusyIndicator.showWhile(fPluginViewer.getTable().getDisplay(), new Runnable() { public void run() { handleDelete(); } }); return true; } if (actionId.equals(ActionFactory.CUT.getId())) { // delete here and let the editor transfer // the selection to the clipboard handleDelete(); return false; } if (actionId.equals(ActionFactory.PASTE.getId())) { doPaste(); return true; } if (actionId.equals(ActionFactory.SELECT_ALL.getId())) { BusyIndicator.showWhile(fPluginViewer.getTable().getDisplay(), new Runnable() { public void run() { handleSelectAll(); } }); return true; } return false; } public void expandTo(Object object) { if (object instanceof IFeatureImport) { StructuredSelection ssel = new StructuredSelection(object); fPluginViewer.setSelection(ssel); } } protected void fillContextMenu(IMenuManager manager) { IStructuredSelection selection = (StructuredSelection) fPluginViewer.getSelection(); if (!selection.isEmpty()) { manager.add(fDeleteAction); manager.add(new Separator()); } getPage().getMDEEditor().getContributor().contextMenuAboutToShow(manager); manager.add(new GroupMarker(IWorkbenchActionConstants.MB_ADDITIONS)); } protected void registerPopupMenu(MenuManager popupMenuManager) { IEditorSite site = (IEditorSite) getPage().getSite(); site.registerContextMenu(site.getId() + ".plugins", popupMenuManager, fViewerPart.getViewer(), false); //$NON-NLS-1$ } protected void selectionChanged(IStructuredSelection selection) { getPage().getMDEEditor().setSelection(selection); getPage().getManagedForm().fireSelectionChanged(this, selection); } public void initialize() { IFeatureModel model = (IFeatureModel) getPage().getModel(); refresh(); if (model.isEditable() == false) { getTablePart().setButtonEnabled(0, false); getTablePart().setButtonEnabled(1, false); getTablePart().setButtonEnabled(3, false); fSyncButton.setEnabled(false); } model.addModelChangedListener(this); MDECore.getDefault().getModelManager().addPluginModelListener(this); MDECore.getDefault().getFeatureModelManager().addFeatureModelListener(this); } public void modelChanged(IModelChangedEvent e) { if (e.getChangeType() == IModelChangedEvent.WORLD_CHANGED) { markStale(); return; } else if (e.getChangeType() == IModelChangedEvent.CHANGE) { Object obj = e.getChangedObjects()[0]; if (obj instanceof IFeatureImport) { fPluginViewer.refresh(obj); } } else { Object obj = e.getChangedObjects()[0]; if (obj instanceof IFeatureImport) { if (e.getChangeType() == IModelChangedEvent.INSERT) { fPluginViewer.add(e.getChangedObjects()); if (e.getChangedObjects().length > 0) { fPluginViewer.setSelection(new StructuredSelection(e.getChangedObjects()[0])); } } else fPluginViewer.remove(e.getChangedObjects()); } else if (obj instanceof IFeaturePlugin) { if (fSyncButton.getSelection()) { recomputeImports(); } } } } private void recomputeImports() { IFeatureModel model = (IFeatureModel) getPage().getModel(); IFeature feature = model.getFeature(); try { feature.computeImports(); } catch (CoreException e) { MDEPlugin.logException(e); } } public void modelsChanged(final MonitorModelDelta delta) { getSection().getDisplay().asyncExec(new Runnable() { public void run() { if (getSection().isDisposed()) { return; } ModelEntry[] added = delta.getAddedEntries(); ModelEntry[] removed = delta.getRemovedEntries(); ModelEntry[] changed = delta.getChangedEntries(); if (hasModels(added) || hasModels(removed) || hasModels(changed)) markStale(); } }); } private boolean hasModels(ModelEntry[] entries) { if (entries == null) return false; return entries.length > 0; } public void modelsChanged(final IFeatureModelDelta delta) { getSection().getDisplay().asyncExec(new Runnable() { public void run() { if (getSection().isDisposed()) { return; } IFeatureModel[] added = delta.getAdded(); IFeatureModel[] removed = delta.getRemoved(); IFeatureModel[] changed = delta.getChanged(); if (hasModels(added) || hasModels(removed) || hasModels(changed)) markStale(); } }); } private boolean hasModels(IFeatureModel[] models) { if (models == null) return false; IFeatureModel thisModel = (IFeatureModel) getPage().getModel(); for (int i = 0; i < models.length; i++) { if (models[i] != thisModel) { return true; } } return false; } public void setFocus() { if (fPluginViewer != null) fPluginViewer.getTable().setFocus(); } public void refresh() { IFeatureModel model = (IFeatureModel) getPage().getModel(); IFeature feature = model.getFeature(); fPluginViewer.setInput(feature); super.refresh(); } /** * @see org.eclipse.pde.internal.ui.editor.StructuredViewerSection#canPaste(Clipboard) */ public boolean canPaste(Clipboard clipboard) { Object[] objects = (Object[]) clipboard.getContents(ModelDataTransfer.getInstance()); if (objects != null && objects.length > 0) { return canPaste(null, objects); } return false; } /** * @see org.eclipse.pde.internal.ui.editor.StructuredViewerSection#canPaste(Object, * Object[]) */ protected boolean canPaste(Object target, Object[] objects) { for (int i = 0; i < objects.length; i++) { if (!(objects[i] instanceof FeatureImport)) return false; } return true; } /** * @see org.eclipse.pde.internal.ui.editor.StructuredViewerSection#doPaste() */ protected void doPaste() { Clipboard clipboard = getPage().getMDEEditor().getClipboard(); Object[] objects = (Object[]) clipboard.getContents(ModelDataTransfer.getInstance()); if (objects != null && canPaste(null, objects)) doPaste(null, objects); } /** * @see org.eclipse.pde.internal.ui.editor.StructuredViewerSection#doPaste(Object, * Object[]) */ protected void doPaste(Object target, Object[] objects) { IFeatureModel model = (IFeatureModel) getPage().getModel(); IFeature feature = model.getFeature(); if (!model.isEditable()) { return; } IFeatureImport[] imports = new IFeatureImport[objects.length]; try { for (int i = 0; i < objects.length; i++) { FeatureImport fImport = (FeatureImport) objects[i]; fImport.setModel(model); fImport.setParent(feature); imports[i] = fImport; } feature.addImports(imports); } catch (CoreException e) { MDEPlugin.logException(e); } } void fireSelection() { ISelection sel = fPluginViewer.getSelection(); if (!sel.isEmpty()) { fPluginViewer.setSelection(fPluginViewer.getSelection()); } else if (fPluginViewer.getElementAt(0) != null) { fPluginViewer.setSelection(new StructuredSelection(fPluginViewer.getElementAt(0))); } } protected boolean createCount() { return true; } }