Java tutorial
/* * Copyright (c) 2012, 2013 Hemanta Sapkota. * 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: * Hemanta Sapkota (laex.pearl@gmail.com) */ package com.laex.cg2d.screeneditor.handlers; import java.io.IOException; import org.apache.commons.lang.StringUtils; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IResource; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.NullProgressMonitor; import org.eclipse.gef.commands.CommandStack; import org.eclipse.gef.commands.CompoundCommand; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.viewers.ListViewer; 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.graphics.Point; 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.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.List; import org.eclipse.swt.widgets.MessageBox; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Spinner; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.IFileEditorInput; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.forms.widgets.FormToolkit; import com.badlogic.gdx.math.Rectangle; import com.laex.cg2d.model.ILayerManager; import com.laex.cg2d.model.ScreenModel.CGScreenModel; import com.laex.cg2d.model.model.GameModel; import com.laex.cg2d.model.model.IDCreationStrategy; import com.laex.cg2d.model.model.IDCreationStrategyFactory; import com.laex.cg2d.model.model.Layer; import com.laex.cg2d.model.model.ModelCopier; import com.laex.cg2d.model.model.Shape; import com.laex.cg2d.screeneditor.Activator; import com.laex.cg2d.screeneditor.ScreenEditorUtil; import com.laex.cg2d.screeneditor.commands.LayerAddCommand; import com.laex.cg2d.screeneditor.commands.ShapeCreateCommand; import com.laex.cg2d.screeneditor.model.ScreenModelAdapter; import com.laex.cg2d.screeneditor.model.ShapeCopier; /** * The Class ListExistingScreensDialog. */ public class ImportScreenContentsDialog extends TitleAreaDialog { /** The list. */ private List list; /** The list viewer. */ private ListViewer listViewer; /** The res list. */ private java.util.List<IResource> resList; /** The command stack. */ private CommandStack commandStack; /** The form toolkit. */ private final FormToolkit formToolkit = new FormToolkit(Display.getDefault()); /** The btn import in new. */ private Button btnImportInNew; /** The txt new layer name. */ private Text txtNewLayerName; /** The new layer name composite. */ private Composite newLayerNameComposite; /** The lbl shape prefix. */ private Label lblShapePrefix; /** The txt suffix. */ private Text txtSuffix; /** The lbl columns. */ private Label lblColumns; /** The txt columns repeat. */ private Spinner txtColumnsRepeat; /** The label. */ private Label label; /** * Create the dialog. * * @param parentShell * the parent shell * @param cmdStack * the cmd stack */ public ImportScreenContentsDialog(Shell parentShell, CommandStack cmdStack) { super(parentShell); this.commandStack = cmdStack; } /** * Create contents of the dialog. * * @param parent * the parent * @return the control */ @Override protected Control createDialogArea(Composite parent) { setTitle("Import Screen Contents Dialog"); setMessage("Import contents from other screens"); Composite container = (Composite) super.createDialogArea(parent); container.setLayout(new GridLayout(2, false)); new Label(container, SWT.NONE); listViewer = new ListViewer(container, SWT.BORDER | SWT.V_SCROLL); list = listViewer.getList(); GridData gd_list = new GridData(SWT.FILL, SWT.FILL, false, false, 2, 1); gd_list.widthHint = 176; gd_list.heightHint = 144; list.setLayoutData(gd_list); lblShapePrefix = formToolkit.createLabel(container, "Suffix (Required)", SWT.NONE); lblShapePrefix.setBackground(null); new Label(container, SWT.NONE); txtSuffix = formToolkit.createText(container, "New Text", SWT.NONE); txtSuffix.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1)); txtSuffix.setText(""); txtSuffix.addModifyListener(new ModifyListener() { @Override public void modifyText(ModifyEvent e) { validateAll(); } }); new Label(container, SWT.NONE); lblColumns = new Label(container, SWT.NONE); lblColumns.setToolTipText("Repeat Columns"); formToolkit.adapt(lblColumns, true, true); lblColumns.setText("Columns"); lblColumns.setBackground(null); new Label(container, SWT.NONE); txtColumnsRepeat = new Spinner(container, SWT.BORDER); txtColumnsRepeat.setSelection(1); txtColumnsRepeat.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1)); formToolkit.adapt(txtColumnsRepeat); formToolkit.paintBordersFor(txtColumnsRepeat); new Label(container, SWT.NONE); btnImportInNew = new Button(container, SWT.CHECK); btnImportInNew.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false, 2, 1)); btnImportInNew.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { validateAll(); } }); formToolkit.adapt(btnImportInNew, true, true); btnImportInNew.setText("Import in New Layer"); btnImportInNew.setBackground(null); txtNewLayerName = formToolkit.createText(container, "New Text", SWT.NONE); txtNewLayerName.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1)); txtNewLayerName.setText(""); txtNewLayerName.addModifyListener(new ModifyListener() { @Override public void modifyText(ModifyEvent e) { if (!StringUtils.isEmpty(txtNewLayerName.getText())) { btnImportInNew.setSelection(true); } else { btnImportInNew.setSelection(false); } validateAll(); } }); new Label(container, SWT.NONE); newLayerNameComposite = formToolkit.createComposite(container, SWT.NONE); newLayerNameComposite.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false, 2, 1)); newLayerNameComposite.setEnabled(false); newLayerNameComposite.setBackground(null); formToolkit.paintBordersFor(newLayerNameComposite); newLayerNameComposite.setLayout(new GridLayout(1, false)); try { loadScreens(); } catch (CoreException e) { Activator.log(e); } return container; } /** * Load screens. * * @throws CoreException * the core exception */ private void loadScreens() throws CoreException { resList = ScreenEditorUtil.getListOfScreensInCurrentProject(ScreenEditorUtil.getActiveEditorInput()); for (IResource res : resList) { if (res.getName() .equals(((IFileEditorInput) ScreenEditorUtil.getActiveEditorInput()).getFile().getName())) { continue; } list.add(res.getName()); } list.select(0); } /** * Validate all. */ private void validateAll() { validateNewLayerNameSelection(); validateSuffix(); validateScreens(); if (StringUtils.isEmpty(txtNewLayerName.getText()) && btnImportInNew.getSelection()) { getButton(OK).setEnabled(false); } } /** * Validate new layer name selection. */ private void validateNewLayerNameSelection() { if (btnImportInNew.getSelection()) { newLayerNameComposite.setEnabled(true); txtNewLayerName.setFocus(); if (!isNewLayerNameValid()) { getButton(OK).setEnabled(false); return; } else { getButton(OK).setEnabled(true); } } else { getButton(OK).setEnabled(true); newLayerNameComposite.setEnabled(false); } } /** * Checks if is new layer name valid. * * @return true, if is new layer name valid */ private boolean isNewLayerNameValid() { if (StringUtils.isEmpty(txtNewLayerName.getText())) { return false; } return true; } /** * Validate suffix. */ private void validateSuffix() { boolean isAlphaNumeric = StringUtils.isAlphanumeric(txtSuffix.getText()); boolean isEmpty = StringUtils.isEmpty(txtSuffix.getText()); if (isEmpty) { getButton(OK).setEnabled(false); setErrorMessage("Please provide a suffix"); return; } // validate suffix // for the suffix to be valid if (!isAlphaNumeric || isEmpty) { getButton(OK).setEnabled(false); setErrorMessage("Suffix should be alphanumeric"); return; } getButton(OK).setEnabled(true); setErrorMessage(null); } /** * Validate screens. */ private void validateScreens() { // The resource list has at least one screen file i.e. itself, which is not // displayed on the list if (resList.size() <= 1) { setErrorMessage("You must have at least one other screen for import."); } } /** * Create contents of the button bar. * * @param parent * the parent */ @Override protected void createButtonsForButtonBar(Composite parent) { createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true); createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false); validateAll(); } /* * (non-Javadoc) * * @see org.eclipse.jface.dialogs.Dialog#okPressed() */ @Override protected void okPressed() { // Before we proceed, we ask the user to save the file PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActiveEditor() .doSave(new NullProgressMonitor()); String resFile = list.getSelection()[0]; for (IResource res : resList) { if (res.getName().equals(resFile)) { IFile file = (IFile) res; try { CGScreenModel model = CGScreenModel.parseFrom(file.getContents()); GameModel gameModel = ScreenModelAdapter.asGameModel(model); GameModel thisScreenModel = ScreenEditorUtil.getScreenModel(); CompoundCommand cc = new CompoundCommand(); boolean createNewLayer = btnImportInNew.getSelection(); ILayerManager layerMgr = ScreenEditorUtil.getScreenLayerManager(); Layer layer = null; if (createNewLayer) { int newLayerId = layerMgr.getNewLayerId(); layer = new Layer(newLayerId, txtNewLayerName.getText() + newLayerId, true, false); LayerAddCommand layerAddCmd = new LayerAddCommand(layer, thisScreenModel.getDiagram()); cc.add(layerAddCmd); } else { // Use existing layer layer = layerMgr.getCurrentLayer(); if (layer == null) { // If we have layers, use the first one if (layerMgr.layerCount() > 0) { layer = layerMgr.getLayerAt(0); } else { MessageBox mb = new MessageBox(getShell(), SWT.ERROR); mb.setMessage( "There are no layers in the screen. Please select the \"import\" feature before continuting"); mb.setText("No Layers in the screen"); mb.open(); return; } } } /* * We need an id creator for model we're currently working on. not of * the file were trying to import from. */ IDCreationStrategy idCreator = IDCreationStrategyFactory .getIDCreator(ScreenEditorUtil.getScreenModel()); int index = 0; for (int i = 0; i < txtColumnsRepeat.getSelection(); i++) { for (Shape shape : gameModel.getDiagram().getChildren()) { // add suffix to id // TODO: Create a shape cloning mechanism ModelCopier shapeCopier = new ShapeCopier(); Shape newShape = (Shape) shapeCopier.copy(shape); newShape.setParentLayer(layer); // make sure our items are really unique StringBuffer sb = new StringBuffer(shape.getId()).append(txtSuffix.getText()) .append(index++); boolean isIdUsed = idCreator.isIdUsed(newShape.getEditorShapeType(), sb.toString()); if (isIdUsed) { newShape.setId(idCreator.newId(newShape.getEditorShapeType())); } else { newShape.setId(sb.toString()); } Rectangle r = new Rectangle(shape.getBounds()); // make sure to // make a copy of // the bounds and // then modify its // coords if (shape.getEditorShapeType().isBackground()) { r.x = i * shape.getBounds().getWidth() - 1; } else { r.x += i * thisScreenModel.getScreenPrefs().getCardPrefs().getCardWidth(); } newShape.setBounds(r); ShapeCreateCommand scc = new ShapeCreateCommand(newShape, thisScreenModel.getDiagram()); cc.add(scc); } } commandStack.execute(cc); } catch (IOException e) { Activator.log(e); } catch (CoreException e) { Activator.log(e); } } } super.okPressed(); } /** * Return the initial size of the dialog. * * @return the initial size */ @Override protected Point getInitialSize() { return new Point(303, 450); } }