Java tutorial
/******************************************************************************* * Copyright (c) 2015, Daniel Ludin * 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: * Daniel Ludin (ludin@hispeed.ch) - initial implementation *******************************************************************************/ package ch.gpb.elexis.cst.view.profileeditor; import java.util.ArrayList; import java.util.Arrays; import java.util.Date; import java.util.Iterator; import java.util.LinkedList; import java.util.List; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IMenuListener; import org.eclipse.jface.action.IMenuManager; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.viewers.ColumnViewerToolTipSupport; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.IDoubleClickListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.StyledCellLabelProvider; import org.eclipse.jface.viewers.StyledString; import org.eclipse.jface.viewers.TreeSelection; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerCell; import org.eclipse.jface.window.Window; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Image; 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.Label; import org.eclipse.swt.widgets.Menu; import org.eclipse.swt.widgets.Tree; import org.eclipse.ui.ISharedImages; import org.eclipse.ui.PlatformUI; import ch.elexis.core.data.activator.CoreHub; import ch.elexis.core.data.events.Heartbeat.HeartListener; import ch.elexis.core.ui.UiDesk; import ch.gpb.elexis.cst.Activator; import ch.gpb.elexis.cst.data.CstProfile; import ch.gpb.elexis.cst.data.CstStateItem; import ch.gpb.elexis.cst.data.CstStateItem.StateType; import ch.gpb.elexis.cst.dialog.CstReminderDialog; import ch.gpb.elexis.cst.preferences.Messages; import ch.gpb.elexis.cst.service.CstService; public class RemindersComposite extends CstComposite implements HeartListener/* IActivationListener */ { CstProfile aProfile; TreeViewer treeviewer; Action actionAddObject; Action actionDeleteObject; Action actionEditObject; Image imgExclam = UiDesk.getImage(Activator.IMG_EXCLAM_NAME); List<Image> imageList = new ArrayList<Image>(); Label lblHeart; Label lblCheckingForActions; public RemindersComposite(Composite parent) { super(parent, SWT.NONE); GridLayout gridLayout = new GridLayout(4, false); setLayout(gridLayout); createLayout(this); treeviewer = new TreeViewer(this, SWT.BORDER); Tree tree_1 = treeviewer.getTree(); GridData gd_tree_1 = new GridData(SWT.LEFT, SWT.CENTER, false, false, 4, 1); gd_tree_1.heightHint = 230; gd_tree_1.widthHint = 500; tree_1.setLayoutData(gd_tree_1); treeviewer.setContentProvider(new ViewContentProvider()); treeviewer.setLabelProvider(new ViewLabelProvider()); Button btnNewAction = new Button(this, SWT.NONE); btnNewAction.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false, 1, 1)); btnNewAction.setText("Start new event chain"); btnNewAction.addSelectionListener(new NewItemListener()); Button btnExpandAll = new Button(this, SWT.NONE); btnExpandAll.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false, 1, 1)); btnExpandAll.setText("Expand All"); btnExpandAll.addSelectionListener(new ExpandAllListener()); MenuManager menuMgr = new MenuManager(); Menu menu = menuMgr.createContextMenu(treeviewer.getControl()); menuMgr.addMenuListener(new IMenuListener() { @Override public void menuAboutToShow(IMenuManager manager) { if (treeviewer.getSelection().isEmpty()) { return; } if (treeviewer.getSelection() instanceof IStructuredSelection) { IStructuredSelection selection = (IStructuredSelection) treeviewer.getSelection(); manager.add(actionAddObject); manager.add(actionDeleteObject); manager.add(actionEditObject); } } }); menuMgr.setRemoveAllWhenShown(true); treeviewer.getControl().setMenu(menu); treeviewer.getTree().setHeaderVisible(true); ColumnViewerToolTipSupport.enableFor(treeviewer); makeActions(); CoreHub.heart.addListener(this); new Label(this, SWT.NONE); lblHeart = new Label(this, SWT.NONE); lblHeart.setText(Messages.RemindersComposite_lblHeart_text); GridData gd_lblHeart = new GridData(SWT.LEFT, SWT.TOP, false, false, 1, 1); gd_lblHeart.heightHint = 50; gd_lblHeart.widthHint = 50; lblHeart.setLayoutData(gd_lblHeart); new Label(this, SWT.NONE); new Label(this, SWT.NONE); new Label(this, SWT.NONE); lblCheckingForActions = new Label(this, SWT.NONE); lblCheckingForActions.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false, 1, 1)); lblCheckingForActions.setText(Messages.RemindersComposite_lblCheckingForActions_text); treeviewer.addDoubleClickListener(new IDoubleClickListener() { @Override public void doubleClick(DoubleClickEvent event) { TreeViewer viewer = (TreeViewer) event.getViewer(); IStructuredSelection thisSelection = (IStructuredSelection) event.getSelection(); Object selectedNode = thisSelection.getFirstElement(); viewer.setExpandedState(selectedNode, !viewer.getExpandedState(selectedNode)); } }); imageList = Arrays.asList(imgHeart1, imgHeart2, imgHeart3, imgHeartA, imgHeartB, imgHeartC, imgHeartD, imgHeartE); lblCheckingForActions.setVisible(false); lblHeart.setVisible(false); } // dynamic Layout elements private void createLayout(Composite parent) { Label labelTherapievorschlag = new Label(parent, SWT.NONE); labelTherapievorschlag.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false, 4, 1)); labelTherapievorschlag.setText(Messages.RemindersComposite_title_reminder); labelTherapievorschlag.setSize(200, 20); } @Override public void dispose() { super.dispose(); } /** * checking for actions coming due * Adding the Hearbeat Listener is done by activation of CstProfileEditor, * even when there is no profile selected yet. thus the return statement. */ @Override public void heartbeat() { //System.out.println("HEARTBEAT"); if (aProfile == null) { return; } new HeartbeatThread().start(); //UiDesk.asyncExec(new HeartbeatThread()); } class NewItemListener extends SelectionAdapter { @Override public void widgetSelected(final SelectionEvent e) { addObject(null); treeviewer.setInput(CstStateItem.getRootItems(aProfile)); } } class ExpandAllListener extends SelectionAdapter { @Override public void widgetSelected(final SelectionEvent e) { expandAll(); } } private void showMessage(String title, String msg) { MessageDialog.openInformation(UiDesk.getTopShell(), title, msg); } public void addObject(CstStateItem selItem) { if (aProfile == null) { showMessage("No Profile", "Bitte whlen Sie ein Profil"); return; } CstReminderDialog dialog = new CstReminderDialog(getShell(), CoreHub.actMandant); StateType selType = null; String name = null; dialog.create(); if (dialog.open() == Window.OK) { selType = dialog.getItemType(); name = dialog.getGroupName(); } else { return; } if (selItem != null) { CstStateItem item = new CstStateItem(CstService.getCompactFromDate(new Date()), name, selType, aProfile.getId(), selItem.getId(), CoreHub.actMandant.getId()); System.out.println("created CstStateItem with parent: " + item.getId()); } else { CstStateItem item = new CstStateItem(CstService.getCompactFromDate(new Date()), name, selType, aProfile.getId(), null, CoreHub.actMandant.getId()); System.out.println("created CstStateItem without parent: " + item.getId()); } } private void makeActions() { actionAddObject = new Action() { public void run() { IStructuredSelection selection = (IStructuredSelection) treeviewer.getSelection(); System.out.println("sel tree: " + selection.toString()); CstStateItem selItem = (CstStateItem) selection.getFirstElement(); addObject(selItem); treeviewer.refresh(); //expandAll(); treeviewer.setExpandedState(selItem, true); } }; actionAddObject.setText("Add Item"); actionAddObject.setImageDescriptor( PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(ISharedImages.IMG_OBJ_ADD)); actionEditObject = new Action() { public void run() { IStructuredSelection selection = (IStructuredSelection) treeviewer.getSelection(); System.out.println("sel tree: " + selection.toString()); CstStateItem selItem = (CstStateItem) selection.getFirstElement(); CstReminderDialog dialog = new CstReminderDialog(getShell(), CoreHub.actMandant); dialog.create(); dialog.setName(selItem.getName()); dialog.setDescription(selItem.getDescription()); dialog.setType(selItem.getItemType()); dialog.setDate(CstService.getDateFromCompact(selItem.getDate())); StateType selType = null; String name = null; String desc = null; Date date = null; if (dialog.open() == Window.OK) { selType = dialog.getItemType(); name = dialog.getGroupName(); desc = dialog.getGroupDescription(); date = dialog.getDate(); } else { return; } selItem.setName(name); selItem.setDescription(desc); selItem.setItemType(selType); selItem.setDate(CstService.getCompactFromDate(date)); treeviewer.refresh(); //expandAll(); } }; actionEditObject.setText("Edit Item"); actionEditObject.setImageDescriptor( PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(ISharedImages.IMG_ETOOL_SAVE_EDIT)); actionDeleteObject = new Action() { public void run() { TreeSelection selection = (TreeSelection) treeviewer.getSelection(); System.out.println("sel tree: " + selection.toString()); CstStateItem selItem = (CstStateItem) selection.getFirstElement(); //selection.getPaths(); //CstStateItem parent = (CstStateItem) selItem.getParent(); //TreeItem treeItem = (TreeItem) selection.getFirstElement(); List<CstStateItem> result = new ArrayList<CstStateItem>(); List<CstStateItem> itemsToDelete = getChildrenToDelete(selItem, result); itemsToDelete.add(selItem); for (CstStateItem cstStateItem : itemsToDelete) { cstStateItem.delete(); } treeviewer.setInput(CstStateItem.getRootItems(aProfile)); expandAll(); // //treeviewer.setExpandedState(CstStateItem.getParent(selItem), true); } }; actionDeleteObject.setText("Delete Item"); actionDeleteObject.setImageDescriptor( PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(ISharedImages.IMG_ETOOL_DELETE)); } private static List<CstStateItem> getChildrenToDelete(CstStateItem parent, List<CstStateItem> result) { List<CstStateItem> items = CstStateItem.getChildren(parent); for (CstStateItem item : items) { result.add(item); if (!CstStateItem.getChildren(item).isEmpty()) { RemindersComposite.getChildrenToDelete(item, result); } } return result; } private void expandAll() { treeviewer.expandAll(); } class ViewLabelProvider extends StyledCellLabelProvider { @Override public void update(ViewerCell cell) { CstStateItem element = (CstStateItem) cell.getElement(); StyledString text = new StyledString(); text.append(element.getItemType().name() + ": " + element.getName()); cell.setText(text.toString()); cell.setStyleRanges(text.getStyleRanges()); // A, D, R, T switch (element.getItemType().ordinal()) { case 0: cell.setForeground(ORANGE); cell.setImage(imgAction); break; case 1: cell.setForeground(COLOR_RED); cell.setImage(imgDecision); break; case 2: cell.setText(element.getItemType().name() + "" + " fllig am:" + CstService.getGermanFromCompact(element.getDate())); if (new Date().after(CstService.getDateFromCompact(element.getDate()))) { cell.setImage(imgReminder); cell.setBackground(COLOR_RED); /* cell.setText(text.toString() + " (fllig am: " + CstService.getGermanFromCompact(element.getDate()) + ") "); */ } else { cell.setBackground(WHITE); cell.setImage(imgReminder); } cell.setForeground(VIOLET); break; case 3: cell.setForeground(GREEN); cell.setImage(imgTrigger); break; default: break; } super.update(cell); } @Override public String getToolTipText(Object element) { CstStateItem item = (CstStateItem) element; return "ID: " + item.getId() + " (" + CstService.getGermanFromCompact(item.getDate()) + ")"; } @Override public Point getToolTipShift(Object object) { return new Point(5, 5); } @Override public int getToolTipTimeDisplayed(Object object) { return 2000; } @Override public int getToolTipDisplayDelayTime(Object object) { return 200; } } class ViewContentProvider implements ITreeContentProvider { public void inputChanged(Viewer v, Object oldInput, Object newInput) { } @Override public void dispose() { } @Override public Object[] getElements(Object inputElement) { LinkedList<CstStateItem> list = (LinkedList<CstStateItem>) inputElement; return list.toArray(); } @Override public Object[] getChildren(Object parentElement) { CstStateItem file = (CstStateItem) parentElement; List<CstStateItem> children = CstStateItem.getChildren(file); return children.toArray(); } @Override public Object getParent(Object element) { System.out.println("getParent class: " + element.getClass()); if (element instanceof LinkedList) { LinkedList<CstStateItem> list = (LinkedList<CstStateItem>) element; Iterator<CstStateItem> it = list.iterator(); if (it.hasNext()) { CstStateItem child2 = it.next(); return child2; } else { return null; } } CstStateItem child = (CstStateItem) element; return CstStateItem.getParent(child); } @Override public boolean hasChildren(Object element) { CstStateItem child = (CstStateItem) element; List<CstStateItem> children = CstStateItem.getChildren(child); return !children.isEmpty(); } } public void clear() { } public void setProfile(CstProfile aProfile) { this.aProfile = aProfile; this.treeviewer.setInput(CstStateItem.getRootItems(aProfile)); } /** * class to display the execution of the heart beat * with a pulsating heart (what else?) * @author daniel * */ public class HeartbeatThread extends Thread { int pulse = 300; public void run() { try { HeartbeatThread.sleep(1000); UiDesk.asyncExec(new Runnable() { public void run() { lblCheckingForActions.setVisible(true); lblHeart.setVisible(true); } }); for (final Image image : imageList) { HeartbeatThread.sleep(pulse); UiDesk.asyncExec(new Runnable() { public void run() { lblHeart.setImage(image); } }); } UiDesk.asyncExec(new Runnable() { public void run() { lblCheckingForActions.setVisible(false); lblHeart.setVisible(false); } }); HeartbeatThread.sleep(400); } catch (InterruptedException e) { e.printStackTrace(); } } } }