Java tutorial
/******************************************************************************* * Copyright (c) 2009 xored software, Inc. * * 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: * xored software, Inc. - initial API and Implementation (Alex Panchenko) *******************************************************************************/ package org.eclipse.dltk.tcl.internal.ui.documentation; import java.io.File; import java.lang.reflect.InvocationTargetException; import java.util.Iterator; import java.util.List; import java.util.Map; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.dltk.tcl.internal.ui.TclUI; import org.eclipse.dltk.tcl.ui.manpages.Documentation; import org.eclipse.dltk.tcl.ui.manpages.ManPageFinder; import org.eclipse.dltk.tcl.ui.manpages.ManPageFolder; import org.eclipse.dltk.tcl.ui.manpages.ManPageResource; import org.eclipse.dltk.tcl.ui.manpages.ManpagesFactory; import org.eclipse.dltk.ui.DLTKPluginImages; import org.eclipse.dltk.ui.DLTKUIPlugin; import org.eclipse.dltk.ui.dialogs.StatusInfo; import org.eclipse.dltk.ui.dialogs.TimeTriggeredProgressMonitorDialog; import org.eclipse.emf.common.util.BasicEMap; import org.eclipse.emf.common.util.EMap; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.ecore.util.EcoreUtil; import org.eclipse.jface.dialogs.ProgressMonitorDialog; import org.eclipse.jface.dialogs.StatusDialog; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerSorter; 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.DirectoryDialog; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class ManPagesLocationsDialog extends StatusDialog implements ModifyListener { private final boolean isNew; private final ManPageResource documentations; protected final Documentation documentation; private final Documentation input; /** * @param shell * @param documentation */ public ManPagesLocationsDialog(Shell shell, ManPageResource documentations, Documentation documentation) { super(shell); this.documentations = documentations; this.input = documentation; this.isNew = documentation == null; this.documentation = documentation != null ? (Documentation) EcoreUtil.copy(documentation) : newDocumentation(); setTitle(isNew ? ManPagesMessages.ManPagesLocationsDialog_AddTtile : ManPagesMessages.ManPagesLocationsDialog_EditTitle); setShellStyle(getShellStyle() | SWT.RESIZE); } private static Documentation newDocumentation() { final Documentation value = ManpagesFactory.eINSTANCE.createDocumentation(); value.setId(EcoreUtil.generateUUID()); value.setName(""); //$NON-NLS-1$ return value; } /** * @return */ public Documentation getResult() { return documentation; } private Text nameField; private TreeViewer pathViewer; private Button addButton; private Button removeButton; @Override protected Control createDialogArea(Composite parent) { final Composite dialogArea = (Composite) super.createDialogArea(parent); final Composite content = new Composite(dialogArea, SWT.NONE); content.setLayoutData(new GridData(GridData.FILL_BOTH)); content.setLayout(new GridLayout(3, false)); new Label(content, SWT.NONE).setText(ManPagesMessages.ManPagesLocationsDialog_Name); nameField = new Text(content, SWT.BORDER); final GridData nameGD = new GridData(GridData.FILL_HORIZONTAL); nameGD.horizontalSpan = 2; nameField.setLayoutData(nameGD); nameField.addModifyListener(this); final Label pathLabel = new Label(content, SWT.NONE); pathLabel.setText(ManPagesMessages.ManPagesLocationsDialog_Paths); pathLabel.setLayoutData( new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING | GridData.VERTICAL_ALIGN_BEGINNING)); final Composite pathComp = new Composite(content, SWT.NONE); pathComp.setLayoutData(new GridData(GridData.FILL_BOTH)); final GridLayout pathLayout = new GridLayout(2, false); pathLayout.marginWidth = pathLayout.marginHeight = 0; pathComp.setLayout(pathLayout); pathViewer = new TreeViewer(pathComp); pathViewer.setContentProvider(new FolderContentProvider()); pathViewer.setLabelProvider(new FolderLabelProvider()); pathViewer.setSorter(new ViewerSorter()); final GridData pathGD = new GridData(GridData.FILL_BOTH); pathGD.heightHint = convertHeightInCharsToPixels(16); pathGD.widthHint = convertWidthInCharsToPixels(64); pathViewer.getControl().setLayoutData(pathGD); pathViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { pathSelectionChanged(); } }); final Composite buttonComp = new Composite(pathComp, SWT.NONE); final GridLayout buttonLayout = new GridLayout(); buttonLayout.marginHeight = buttonLayout.marginWidth = 0; buttonComp.setLayout(buttonLayout); buttonComp.setLayoutData(new GridData(GridData.FILL_VERTICAL)); addButton = new Button(buttonComp, SWT.PUSH); ManPagesLocationsBlock.setButtonLayoutData(addButton); addButton.setText(ManPagesMessages.ManPagesLocationsDialog_AddButton); addButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { doAdd(); } }); removeButton = new Button(buttonComp, SWT.PUSH); ManPagesLocationsBlock.setButtonLayoutData(removeButton); removeButton.setText(ManPagesMessages.ManPagesLocationsDialog_RemoveButton); removeButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { final IStructuredSelection selection = getSelection(); if (canRemove(selection)) { doRemove(selection); } } }); // getData(documentation); // return dialogArea; } static class FolderContentProvider implements ITreeContentProvider { public Object[] getChildren(Object parentElement) { if (parentElement instanceof ManPageFolder) { final ManPageFolder folder = (ManPageFolder) parentElement; final EMap<String, String> keywords = folder.getKeywords(); return keywords.toArray(new Map.Entry[keywords.size()]); } return new Object[0]; } public Object getParent(Object element) { if (element instanceof EObject) { return ((EObject) element).eContainer(); } else { return null; } } public boolean hasChildren(Object element) { if (element instanceof ManPageFolder) { final ManPageFolder folder = (ManPageFolder) element; return !folder.getKeywords().isEmpty(); } return false; } public Object[] getElements(Object inputElement) { if (inputElement instanceof Documentation) { final Documentation doc = (Documentation) inputElement; final List<ManPageFolder> folders = doc.getFolders(); return folders.toArray(new Object[folders.size()]); } return new Object[0]; } public void dispose() { } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } } static class FolderLabelProvider extends LabelProvider { @Override public String getText(Object element) { if (element instanceof ManPageFolder) { return ((ManPageFolder) element).getPath(); } else if (element instanceof EObject && element instanceof BasicEMap.Entry<?, ?>) { @SuppressWarnings("unchecked") final BasicEMap.Entry<String, String> entry = (BasicEMap.Entry<String, String>) element; return entry.getKey() + " (" + entry.getValue() + ")"; //$NON-NLS-1$ //$NON-NLS-2$ } return super.getText(element); } @Override public Image getImage(Object element) { if (element instanceof ManPageFolder) { return DLTKPluginImages.get(DLTKPluginImages.IMG_OBJS_LIBRARY); } else { return DLTKUIPlugin.getImageDescriptorRegistry().get(DLTKPluginImages.DESC_OBJS_INFO_OBJ); } } } protected void doAdd() { final DirectoryDialog dialog = new DirectoryDialog(getShell()); dialog.setMessage(ManPagesMessages.ManPagesLocationsDialog_6); final String result = dialog.open(); if (result != null) { final File file = new File(result); if (file.isDirectory()) { ProgressMonitorDialog dialog2 = new TimeTriggeredProgressMonitorDialog(null, 500); try { dialog2.run(true, true, new IRunnableWithProgress() { public void run(IProgressMonitor monitor) { monitor.beginTask(ManPagesMessages.ManPagesLocationsDialog_7, 1); final ManPageFinder finder = new ManPageFinder(); finder.find(documentation, file); monitor.done(); } }); } catch (InvocationTargetException e) { TclUI.error(e); } catch (InterruptedException e) { // ignore } pathViewer.refresh(); updateStatus(); } } } protected void doRemove(IStructuredSelection selection) { for (Iterator<?> i = selection.iterator(); i.hasNext();) { final Object obj = i.next(); if (obj instanceof ManPageFolder) { EcoreUtil.remove((EObject) obj); } } pathViewer.refresh(); updateStatus(); } protected void pathSelectionChanged() { final IStructuredSelection selection = getSelection(); removeButton.setEnabled(canRemove(selection)); } /** * @param doc */ private void getData(Documentation doc) { ++busyCounter; try { nameField.setText(doc.getName()); pathViewer.setInput(documentation); } finally { --busyCounter; } } private void setData(Documentation doc) { doc.setName(nameField.getText().trim()); } @Override protected void okPressed() { setData(documentation); if (isNew) { documentations.getContents().add(documentation); } else { input.setName(documentation.getName()); // TODO smart update input.getFolders().clear(); input.getFolders().addAll(documentation.getFolders()); } super.okPressed(); } private int busyCounter = 0; public void modifyText(ModifyEvent e) { if (busyCounter > 0) { return; } updateStatus(); } private void updateStatus() { updateStatus(validate()); } private IStatus validate() { if (nameField.getText().trim().length() == 0) { return new StatusInfo(IStatus.ERROR, ManPagesMessages.ManPagesLocationsDialog_ErrorEmptyName); } // TODO validate name uniqueness if (documentation.getFolders().isEmpty()) { return new StatusInfo(IStatus.ERROR, ManPagesMessages.ManPagesLocationsDialog_ErrorNoFolders); } return StatusInfo.OK_STATUS; } protected IStructuredSelection getSelection() { return (IStructuredSelection) pathViewer.getSelection(); } protected boolean canRemove(IStructuredSelection selection) { if (selection.isEmpty()) { return false; } for (Iterator<?> i = selection.iterator(); i.hasNext();) { final Object obj = i.next(); if (!(obj instanceof ManPageFolder)) { return false; } } return true; } }