Java tutorial
/* Copyright (C) 2009 Mobile Sorcery AB This program is free software; you can redistribute it and/or modify it under the terms of the Eclipse Public License v1.0. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Eclipse Public License v1.0 for more details. You should have received a copy of the Eclipse Public License v1.0 along with this program. It is also available at http://www.eclipse.org/legal/epl-v10.html */ package com.mobilesorcery.sdk.wizards.internal; import java.util.ArrayList; import java.util.HashMap; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.CellLabelProvider; import org.eclipse.jface.viewers.ColumnViewerToolTipSupport; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.IDoubleClickListener; import org.eclipse.jface.viewers.ISelectionChangedListener; 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.ViewerCell; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.TableColumn; import org.eclipse.swt.widgets.Text; import com.mobilesorcery.sdk.core.templates.IProjectTemplateExtension; import com.mobilesorcery.sdk.core.templates.ProjectTemplate; import com.mobilesorcery.sdk.core.templates.TemplateManager; import com.mobilesorcery.sdk.ui.MosyncUIPlugin; import com.mobilesorcery.sdk.ui.UIUtils; import com.mobilesorcery.sdk.wizards.Activator; public class TemplateWizardPage extends WizardPage { private final class TemplateCategoryLabelProvider extends LabelProvider { private final HashMap<String, Image> cachedImages = new HashMap<String, Image>(); @Override public Image getImage(Object element) { if (element instanceof IProjectTemplateExtension) { String name = ((IProjectTemplateExtension) element).getName(); Image image = cachedImages.get(name); if (!cachedImages.containsKey(name)) { ImageDescriptor imageDesc = ((IProjectTemplateExtension) element).getImage(); image = imageDesc == null ? null : imageDesc.createImage(); image = MosyncUIPlugin.resize(image, 32, 32, true, true); cachedImages.put(name, image); } return image; } return null; } @Override public void dispose() { for (Image cachedImage : cachedImages.values()) { if (cachedImage != null) { cachedImage.dispose(); } } } @Override public String getText(Object element) { if (element instanceof IProjectTemplateExtension) { return ((IProjectTemplateExtension) element).getName(); } return ""; } } private final class ProjectTemplateLabelProvider extends CellLabelProvider { public String getText(Object o) { if (o instanceof ProjectTemplate) { return ((ProjectTemplate) o).getName(); } return "?"; } @Override public String getToolTipText(Object element) { if (element instanceof ProjectTemplate) { String desc = ((ProjectTemplate) element).getDescription(); if (desc != null) { return desc; } } return ""; } @Override public void update(ViewerCell cell) { Object element = cell.getElement(); cell.setText(getText(element)); } } private final class InnerSelectionListener implements SelectionListener { @Override public void widgetDefaultSelected(SelectionEvent e) { widgetSelected(e); } @Override public void widgetSelected(SelectionEvent e) { if (!templateTable.getControl().isDisposed()) { //descriptionText.setVisible(useTemplate.getSelection()); //templateTable.getControl().setEnabled(useTemplate.getSelection()); updatePageComplete(); } } } protected TemplateWizardPage() { super("SelectTemplate"); setTitle("MoSync Project Template"); setDescription("Select a project template"); setImageDescriptor(ImageDescriptor.createFromFile(this.getClass(), "/icons/wizardimg.png")); } //private Button useTemplate; private TableViewer templateTable; private Text descriptionText; private TableViewer categoryTable; public ProjectTemplate getProjectTemplate() { IStructuredSelection selection = (IStructuredSelection) templateTable.getSelection(); return (ProjectTemplate) selection.getFirstElement(); //return useTemplate.getSelection() ? (ProjectTemplate) selection.getFirstElement() : null; } @Override public void createControl(Composite parent) { Composite control = new Composite(parent, SWT.NONE); control.setLayout(new GridLayout(2, false)); setPageComplete(false); categoryTable = new TableViewer(control); categoryTable.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { if (templateTable.getTable().getItemCount() > 0) { templateTable.getTable().select(0); } updateUI(); } }); TableColumn column1 = new TableColumn(categoryTable.getTable(), SWT.NONE); column1.setWidth(UIUtils.getDefaultFieldSize()); categoryTable.getControl() .setLayoutData(new GridData(UIUtils.getDefaultFieldSize(), SWT.FILL, false, true)); categoryTable.setLabelProvider(new TemplateCategoryLabelProvider()); categoryTable.setContentProvider(new ArrayContentProvider()); categoryTable.setInput(getTemplateExtensions()); templateTable = new TableViewer(control); templateTable.setLabelProvider(new ProjectTemplateLabelProvider()); templateTable.setContentProvider(new ArrayContentProvider()); templateTable.getControl().setLayoutData(new GridData(GridData.FILL_BOTH)); SelectionListener listener = new InnerSelectionListener(); templateTable.getTable().addSelectionListener(listener); templateTable.addDoubleClickListener(new IDoubleClickListener() { @Override public void doubleClick(DoubleClickEvent event) { if (getWizard().canFinish()) { // Kind of ugly... if (getWizard().performFinish()) { getWizard().getContainer().getShell().dispose(); } } } }); ColumnViewerToolTipSupport.enableFor(templateTable, SWT.NONE); descriptionText = new Text(control, SWT.READ_ONLY | SWT.WRAP | SWT.V_SCROLL | SWT.BORDER); GridData descriptionTextData = new GridData(GridData.FILL_HORIZONTAL); descriptionTextData.horizontalSpan = 2; descriptionTextData.heightHint = UIUtils.getRowHeight(3); descriptionText.setLayoutData(descriptionTextData); updateDescriptionText(null); /* useTemplate = new Button(control, SWT.CHECK); useTemplate.setText("Use template"); useTemplate.setSelection(true); useTemplate.setLayoutData(new GridData(SWT.DEFAULT, SWT.DEFAULT, true, false, 2, 1)); useTemplate.addSelectionListener(listener);*/ templateTable.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { IStructuredSelection selection = (IStructuredSelection) event.getSelection(); ProjectTemplate template = (ProjectTemplate) selection.getFirstElement(); updateDescriptionText(template); } }); setControl(control); updateUI(); } protected void updateUI() { IStructuredSelection selection = (IStructuredSelection) categoryTable.getSelection(); IProjectTemplateExtension selected = (IProjectTemplateExtension) selection.getFirstElement(); if (selected != null) { templateTable.setInput(getTemplates(selected.getType())); } updatePageComplete(); } private void updatePageComplete() { setPageComplete(/*!useTemplate.getSelection() || */!templateTable.getSelection().isEmpty()); } private ProjectTemplate[] getTemplates(String type) { return TemplateManager.getDefault().getProjectTemplates(type).toArray(new ProjectTemplate[0]); } private IProjectTemplateExtension[] getTemplateExtensions() { ArrayList<IProjectTemplateExtension> result = new ArrayList<IProjectTemplateExtension>(); for (String type : TemplateManager.getDefault().getTemplateTypes()) { IProjectTemplateExtension ext = TemplateManager.getDefault().getExtensionForType(type); if (ext != null) { result.add(ext); } } return result.toArray(new IProjectTemplateExtension[0]); } private void updateDescriptionText(ProjectTemplate template) { String description = ""; if (template != null && template.getDescription() != null) { description = template.getDescription(); } descriptionText.setText(description); } }