Java tutorial
/******************************************************************************* * Copyright (c) 2006-2016, G. Weirich and Elexis * 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: * G. Weirich - initial implementation *******************************************************************************/ package ch.elexis.core.ui.documents.views; import java.text.MessageFormat; import java.util.List; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.InputDialog; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.layout.RowLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import ch.elexis.core.exceptions.ElexisException; import ch.elexis.core.model.ICategory; import ch.elexis.core.model.IDocument; import ch.elexis.core.services.IDocumentStore.Capability; import ch.elexis.core.ui.documents.Messages; import ch.elexis.core.ui.documents.service.DocumentStoreServiceHolder; import ch.elexis.core.ui.icons.Images; import ch.elexis.core.ui.util.SWTHelper; public class DocumentsMetaDataDialog extends TitleAreaDialog { private static Logger logger = LoggerFactory.getLogger(DocumentsMetaDataDialog.class); String file; IDocument document; Text tTitle; Text tKeywords; ComboViewer cbCategories; public String title; public String keywords; public String category; private final boolean categoryCrudAllowed; private final boolean keywordsCrudAllowed; public DocumentsMetaDataDialog(IDocument document, Shell parent) { super(parent); this.document = document; categoryCrudAllowed = DocumentStoreServiceHolder.getService().isAllowed(document, Capability.CATEGORY); keywordsCrudAllowed = DocumentStoreServiceHolder.getService().isAllowed(document, Capability.KEYWORDS); } @Override protected Control createDialogArea(Composite parent) { Composite ret = new Composite(parent, SWT.NONE); ret.setLayout(new GridLayout()); ret.setLayoutData(SWTHelper.getFillGridData(1, true, 1, true)); new Label(ret, SWT.None).setText(Messages.DocumentView_categoryColumn); Composite cCats = new Composite(ret, SWT.NONE); cCats.setFocus(); cCats.setLayoutData(SWTHelper.getFillGridData(1, true, 1, false)); cCats.setLayout(new RowLayout(SWT.HORIZONTAL)); cbCategories = new ComboViewer(cCats, SWT.SINGLE | SWT.READ_ONLY); cbCategories.setContentProvider(ArrayContentProvider.getInstance()); cbCategories.setLabelProvider(new LabelProvider() { @Override public String getText(Object element) { if (element instanceof ICategory) { ICategory iCategory = (ICategory) element; return iCategory.getName(); } return super.getText(element); } }); List<ICategory> categories = DocumentStoreServiceHolder.getService().getCategories(document); cbCategories.setInput(categories); Button bNewCat = new Button(cCats, SWT.PUSH); bNewCat.setVisible(categoryCrudAllowed); bNewCat.setImage(Images.IMG_NEW.getImage()); bNewCat.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { InputDialog id = new InputDialog(getShell(), Messages.DocumentMetaDataDialog_newCategory, Messages.DocumentMetaDataDialog_newCategory, null, null); if (id.open() == Dialog.OK) { document.setCategory( DocumentStoreServiceHolder.getService().createCategory(document, id.getValue())); if (!((List<?>) cbCategories.getInput()).contains(document.getCategory())) { cbCategories.add(document.getCategory()); } cbCategories.setSelection(new StructuredSelection(document.getCategory()), true); } } }); Button bEditCat = new Button(cCats, SWT.PUSH); bEditCat.setImage(Images.IMG_EDIT.getImage()); bEditCat.setVisible(categoryCrudAllowed); bEditCat.setToolTipText(Messages.DocumentMetaDataDialog_renameCategory); bEditCat.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { ISelection old = cbCategories.getSelection(); Object selection = ((StructuredSelection) old).getFirstElement(); if (selection instanceof ICategory) { InputDialog id = new InputDialog(getShell(), MessageFormat.format(Messages.DocumentMetaDataDialog_renameCategoryConfirm, ((ICategory) selection).getName()), Messages.DocumentMetaDataDialog_renameCategoryText, ((ICategory) selection).getName(), null); if (id.open() == Dialog.OK) { DocumentStoreServiceHolder.getService().renameCategory(document, id.getValue()); ((ICategory) selection).setName(id.getValue()); cbCategories.refresh(); } } } }); Button bDeleteCat = new Button(cCats, SWT.PUSH); bDeleteCat.setVisible(categoryCrudAllowed); bDeleteCat.setImage(Images.IMG_DELETE.getImage()); bDeleteCat.setToolTipText(Messages.DocumentMetaDataDialog_deleteCategory); bDeleteCat.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent ev) { ISelection old = cbCategories.getSelection(); Object selection = ((StructuredSelection) old).getFirstElement(); InputDialog id = new InputDialog(getShell(), MessageFormat.format(Messages.DocumentMetaDataDialog_deleteCategoryConfirm, ((ICategory) selection).getName()), Messages.DocumentMetaDataDialog_deleteCategoryText, "", null); if (id.open() == Dialog.OK) { try { document.setCategory((ICategory) selection); document.setCategory( DocumentStoreServiceHolder.getService().removeCategory(document, id.getValue())); if (findComboElementByName(document.getCategory().getName()) == null) { cbCategories.add(document.getCategory()); } cbCategories.remove(selection); cbCategories.setSelection(new StructuredSelection(document.getCategory()), true); } catch (ElexisException e) { logger.warn("existing document references", e); SWTHelper.showError(Messages.DocumentMetaDataDialog_deleteCategoryError, Messages.DocumentMetaDataDialog_deleteCategoryErrorText); } } } }); new Label(ret, SWT.NONE).setText(Messages.DocumentsView_Title); tTitle = SWTHelper.createText(ret, 1, SWT.NONE); new Label(ret, SWT.NONE).setText(Messages.DocumentView_keywordsColumn); tKeywords = SWTHelper.createText(ret, 4, SWT.NONE); tKeywords.setEnabled(keywordsCrudAllowed); tTitle.setText(document.getTitle()); tKeywords.setText(document.getKeywords()); Object cbSelection = document.getCategory() != null ? document.getCategory() : cbCategories.getElementAt(0); if (cbSelection != null) { if (!categories.contains(cbSelection)) { cbSelection = DocumentStoreServiceHolder.getService().getDefaultCategory(document); } cbCategories.setSelection(new StructuredSelection(cbSelection), true); } return ret; } @Override public void create() { super.create(); setTitle(document.getTitle()); getShell().setText(Messages.DocumentMetaDataDialog_title); setMessage(Messages.DocumentMetaDataDialog_titleMessage); } @Override protected void okPressed() { if (keywordsCrudAllowed) { keywords = tKeywords.getText(); } title = tTitle.getText(); StructuredSelection comboSelection = (StructuredSelection) cbCategories.getSelection(); if (document != null) { if (comboSelection != null) { document.setCategory((ICategory) comboSelection.getFirstElement()); } document.setTitle(title); document.setKeywords(tKeywords.getText()); } super.okPressed(); } private ICategory findComboElementByName(String name) { List<?> items = (List<?>) cbCategories.getInput(); if (items != null) { for (Object o : items) { if (o instanceof ICategory) { if (((ICategory) o).getName().equals(name)) { return (ICategory) o; } } } } return null; } }