Java tutorial
/******************************************************************************* * Copyright (c) 2007, 2010 Spring IDE Developers * 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: * Spring IDE Developers - initial API and implementation *******************************************************************************/ package org.springframework.ide.eclipse.webflow.ui.graph.dialogs; import java.util.ArrayList; import java.util.List; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.viewers.DecoratingLabelProvider; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.Viewer; 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.Image; 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.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.TabFolder; import org.eclipse.swt.widgets.TabItem; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.Text; import org.springframework.ide.eclipse.webflow.core.internal.model.DecisionState; import org.springframework.ide.eclipse.webflow.core.internal.model.EntryActions; import org.springframework.ide.eclipse.webflow.core.internal.model.ExitActions; import org.springframework.ide.eclipse.webflow.core.internal.model.WebflowModelXmlUtils; import org.springframework.ide.eclipse.webflow.core.model.IActionElement; import org.springframework.ide.eclipse.webflow.core.model.IAttributeEnabled; import org.springframework.ide.eclipse.webflow.core.model.ICloneableModelElement; import org.springframework.ide.eclipse.webflow.core.model.IDecisionState; import org.springframework.ide.eclipse.webflow.core.model.IIf; import org.springframework.ide.eclipse.webflow.core.model.IWebflowModelElement; import org.springframework.ide.eclipse.webflow.ui.editor.outline.webflow.WebflowUIImages; import org.springframework.ide.eclipse.webflow.ui.graph.model.WebflowModelLabelDecorator; import org.springframework.ide.eclipse.webflow.ui.graph.model.WebflowModelLabelProvider; /** * @author Christian Dupuis */ public class DecisionStatePropertiesDialog extends TitleAreaDialog implements IDialogValidator { private class IfContentProvider implements IStructuredContentProvider { private IDecisionState project; public IfContentProvider(IDecisionState project) { this.project = project; } public void dispose() { } public Object[] getElements(Object obj) { return project.getIfs().toArray(); } public void inputChanged(Viewer arg0, Object arg1, Object arg2) { } } private IDecisionState decisionState; private IDecisionState decisionStateClone; private Label nameLabel; private Text nameText; private Button okButton; private IWebflowModelElement parent; private PropertiesComposite properties; private ActionComposite entryActionsComposite; private ActionComposite exitActionsComposite; private ExceptionHandlerComposite exceptionHandlerComposite; private List<IActionElement> entryActions; private List<IActionElement> exitActions; private TableViewer configsViewer; private Button editButton; private List<org.springframework.ide.eclipse.webflow.core.model.IExceptionHandler> exceptionHandler; private Label parentLabel; private Text parentText; public DecisionStatePropertiesDialog(Shell parentShell, IWebflowModelElement parent, IDecisionState state) { super(parentShell); this.decisionState = state; this.parent = parent; this.decisionStateClone = ((DecisionState) state).cloneModelElement(); if (this.decisionStateClone.getEntryActions() != null) { entryActions = new ArrayList<IActionElement>(); entryActions.addAll(this.decisionStateClone.getEntryActions().getEntryActions()); } else { entryActions = new ArrayList<IActionElement>(); EntryActions entry = new EntryActions(); entry.createNew(decisionStateClone); decisionStateClone.setEntryActions(entry); } if (this.decisionStateClone.getExitActions() != null) { exitActions = new ArrayList<IActionElement>(); exitActions.addAll(this.decisionStateClone.getExitActions().getExitActions()); } else { exitActions = new ArrayList<IActionElement>(); ExitActions exit = new ExitActions(); exit.createNew(decisionStateClone); decisionStateClone.setExitActions(exit); } exceptionHandler = new ArrayList<org.springframework.ide.eclipse.webflow.core.model.IExceptionHandler>(); if (this.decisionStateClone.getExceptionHandlers() != null) { exceptionHandler.addAll(this.decisionStateClone.getExceptionHandlers()); } } protected void buttonPressed(int buttonId) { if (buttonId == IDialogConstants.OK_ID) { this.decisionStateClone.setId(trimString(getId())); if (!WebflowModelXmlUtils.isVersion1Flow(decisionState)) { this.decisionStateClone.setParent(trimString(getParent())); } if (decisionState.getEntryActions() == null && this.entryActions.size() > 0) { EntryActions entry = new EntryActions(); entry.createNew(decisionStateClone); for (IActionElement a : this.entryActions) { entry.addEntryAction(a); } decisionStateClone.setEntryActions(entry); } else if (this.entryActions.size() == 0) { decisionStateClone.setEntryActions(null); } else { decisionStateClone.getEntryActions().removeAll(); for (IActionElement a : this.entryActions) { decisionStateClone.getEntryActions().addEntryAction(a); } } if (decisionState.getExitActions() == null && this.exitActions.size() > 0) { ExitActions exit = new ExitActions(); exit.createNew(decisionStateClone); for (IActionElement a : this.exitActions) { exit.addExitAction(a); } decisionStateClone.setExitActions(exit); } else if (this.exitActions.size() == 0) { decisionStateClone.setExitActions(null); } else { decisionStateClone.getExitActions().removeAll(); for (IActionElement a : this.exitActions) { decisionStateClone.getExitActions().addExitAction(a); } } if (this.exceptionHandler != null && this.exceptionHandler.size() > 0) { decisionStateClone.removeAllExceptionHandler(); for (org.springframework.ide.eclipse.webflow.core.model.IExceptionHandler a : this.exceptionHandler) { decisionStateClone.addExceptionHandler(a); } } else { decisionStateClone.removeAllExceptionHandler(); } ((ICloneableModelElement<IDecisionState>) this.decisionState).applyCloneValues(this.decisionStateClone); } super.buttonPressed(buttonId); } /* (non-Javadoc) * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell) */ protected void configureShell(Shell shell) { super.configureShell(shell); shell.setText(getShellTitle()); shell.setImage(getImage()); } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite) */ protected void createButtonsForButtonBar(Composite parent) { // create OK and Cancel buttons by default okButton = createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true); createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false); // do this here because setting the text will set enablement on the // ok button nameText.setFocus(); if (this.decisionState != null && this.decisionState.getId() != null) { okButton.setEnabled(true); } else { okButton.setEnabled(false); } } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.TitleAreaDialog#createContents(org.eclipse.swt.widgets.Composite) */ protected Control createContents(Composite parent) { Control contents = super.createContents(parent); setTitle(getTitle()); setMessage(getMessage()); return contents; } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.TitleAreaDialog#createDialogArea(org.eclipse.swt.widgets.Composite) */ protected Control createDialogArea(Composite parent) { Composite parentComposite = (Composite) super.createDialogArea(parent); Composite composite = new Composite(parentComposite, SWT.NULL); GridLayout layout = new GridLayout(); layout.numColumns = 1; composite.setLayout(layout); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); TabFolder folder = new TabFolder(composite, SWT.NULL); TabItem item1 = new TabItem(folder, SWT.NULL); item1.setText("General"); item1.setImage(getImage()); TabItem item3 = new TabItem(folder, SWT.NULL); TabItem item4 = new TabItem(folder, SWT.NULL); TabItem item5 = new TabItem(folder, SWT.NULL); TabItem item6 = new TabItem(folder, SWT.NULL); Group groupActionType = new Group(folder, SWT.NULL); GridLayout layoutAttMap = new GridLayout(); layoutAttMap.marginWidth = 3; layoutAttMap.marginHeight = 3; groupActionType.setLayout(layoutAttMap); groupActionType.setText(" Decision State "); GridData grid = new GridData(); groupActionType.setLayoutData(grid); Composite nameGroup = new Composite(groupActionType, SWT.NULL); nameGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); GridLayout layout1 = new GridLayout(); layout1.numColumns = 2; layout1.marginWidth = 5; nameGroup.setLayout(layout1); nameLabel = new Label(nameGroup, SWT.NONE); nameLabel.setText("State id"); nameText = new Text(nameGroup, SWT.SINGLE | SWT.BORDER); if (this.decisionState != null && this.decisionState.getId() != null) { this.nameText.setText(this.decisionState.getId()); } nameText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); nameText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { validateInput(); } }); if (!WebflowModelXmlUtils.isVersion1Flow(decisionState)) { parentLabel = new Label(nameGroup, SWT.NONE); parentLabel.setText("Parent state id"); parentText = new Text(nameGroup, SWT.SINGLE | SWT.BORDER); if (this.decisionState != null && this.decisionState.getParent() != null) { this.parentText.setText(this.decisionState.getParent()); } parentText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); parentText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { validateInput(); } }); } Group groupIfsType = new Group(groupActionType, SWT.NULL); layoutAttMap = new GridLayout(); layoutAttMap.marginWidth = 3; layoutAttMap.marginHeight = 3; groupIfsType.setLayout(layoutAttMap); groupIfsType.setText(" Ifs "); groupIfsType.setLayoutData(new GridData(GridData.FILL_BOTH)); Composite tableAndButtons = new Composite(groupIfsType, SWT.NONE); tableAndButtons.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); GridLayout layout2 = new GridLayout(); layout2.marginHeight = 0; layout2.marginWidth = 0; layout2.numColumns = 2; tableAndButtons.setLayout(layout2); Table configsTable = new Table(tableAndButtons, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.BORDER); GridData data = new GridData(GridData.FILL_BOTH); // data.widthHint = 250; data.heightHint = 145; configsTable.setLayoutData(data); configsTable.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { handleTableSelectionChanged(); } }); configsViewer = new TableViewer(configsTable); configsViewer.setContentProvider(new IfContentProvider(this.decisionStateClone)); configsViewer.setLabelProvider( new DecoratingLabelProvider(new WebflowModelLabelProvider(), new WebflowModelLabelDecorator())); configsViewer.setInput(this); Composite buttonArea = new Composite(tableAndButtons, SWT.NONE); layout = new GridLayout(); layout.marginHeight = 0; layout.marginWidth = 0; buttonArea.setLayout(layout); buttonArea.setLayoutData(new GridData(GridData.FILL_VERTICAL)); editButton = new Button(buttonArea, SWT.PUSH); editButton.setText("Edit"); GridData data1 = new GridData(GridData.HORIZONTAL_ALIGN_FILL); data1.widthHint = 40; editButton.setLayoutData(data1); editButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { IStructuredSelection selection = (IStructuredSelection) configsViewer.getSelection(); if (selection.getFirstElement() != null) { if (selection.getFirstElement() instanceof IIf) { IfPropertiesDialog dialog = new IfPropertiesDialog(getShell(), decisionState, (IIf) selection.getFirstElement(), false); if (Dialog.OK == dialog.open()) { configsViewer.refresh(); } } } } }); item1.setControl(groupActionType); entryActionsComposite = new ActionComposite(this, item3, getShell(), this.entryActions, this.decisionStateClone.getEntryActions(), IActionElement.ACTION_TYPE.ENTRY_ACTION); item3.setControl(entryActionsComposite.createDialogArea(folder)); exitActionsComposite = new ActionComposite(this, item4, getShell(), this.exitActions, this.decisionStateClone.getExitActions(), IActionElement.ACTION_TYPE.EXIT_ACTION); item4.setControl(exitActionsComposite.createDialogArea(folder)); exceptionHandlerComposite = new ExceptionHandlerComposite(this, item5, getShell(), this.exceptionHandler, this.decisionStateClone); item5.setControl(exceptionHandlerComposite.createDialogArea(folder)); properties = new PropertiesComposite(this, item6, getShell(), (IAttributeEnabled) this.decisionStateClone); item6.setControl(properties.createDialogArea(folder)); applyDialogFont(parentComposite); return parentComposite; } public String getId() { return this.nameText.getText(); } public String getParent() { return this.parentText.getText(); } protected Image getImage() { return WebflowUIImages.getImage(WebflowUIImages.IMG_OBJS_DECISION_STATE); } public String getMessage() { return "Enter the details for the decision state"; } public IWebflowModelElement getModelElementParent() { return this.parent; } protected String getShellTitle() { return "Decision State"; } protected String getTitle() { return "Decision State properties"; } protected void showError(String error) { super.setErrorMessage(error); } public String trimString(String string) { if (string != null && string == "") { string = null; } return string; } public void validateInput() { String id = this.nameText.getText(); boolean error = false; StringBuffer errorMessage = new StringBuffer(); if (id == null || "".equals(id)) { errorMessage.append("A valid id attribute is required. "); error = true; } else { /* * if (WebFlowCoreUtils.isIdAlreadyChoosenByAnotherState(parent, * actionState, id)) { errorMessage .append("The entered id * attribute must be unique within a single web flow. "); error = * true; } */ } if (error) { getButton(OK).setEnabled(false); setErrorMessage(errorMessage.toString()); } else { getButton(OK).setEnabled(true); setErrorMessage(null); } } protected void handleTableSelectionChanged() { IStructuredSelection selection = (IStructuredSelection) configsViewer.getSelection(); if (selection.isEmpty()) { editButton.setEnabled(false); } else { editButton.setEnabled(true); } } }