Java tutorial
/******************************************************************************* * Copyright (c) 2007-2010, 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.preferences.inputs; import java.util.List; 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.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import ch.elexis.Hub; import ch.elexis.StringConstants; import ch.elexis.admin.ACE; import ch.elexis.data.Anwender; import ch.elexis.util.SWTHelper; import ch.rgw.tools.Log; import ch.rgw.tools.StringTool; import ch.rgw.tools.Tree; public class ACLPreferenceTree extends Composite { Tree<ACE> acls; TreeViewer tv; org.eclipse.swt.widgets.List lbGroups; org.eclipse.swt.widgets.List lbUsers; List<Anwender> lUsers; private Tree<ACE> findParent(ACE t) { ACE parent = t.getParent(); if (parent.equals(ACE.ACE_ROOT)) { return acls; } Tree<ACE> parentTree = acls.find(parent, true); if (parentTree != null) { return parentTree; } Tree<ACE> grandParentTree = findParent(parent); if (grandParentTree == null) { System.out.println("Fehler"); return new Tree<ACE>(acls, parent); } return new Tree<ACE>(grandParentTree, parent); } public ACLPreferenceTree(Composite parent, ACE... acl) { super(parent, SWT.NONE); acls = new Tree<ACE>(null, null); for (ACE s : acl) { Tree<ACE> mine = acls.find(s, true); if (mine == null) { Tree<ACE> parentTree = findParent(s); if (parentTree != null) { new Tree<ACE>(parentTree, s); } else { Hub.log.log("Could not find parent ACE " + s.getName(), Log.ERRORS); } } } setLayout(new GridLayout()); setLayoutData(SWTHelper.getFillGridData(1, true, 1, true)); tv = new TreeViewer(this); tv.setContentProvider(new ITreeContentProvider() { public Object[] getChildren(Object parentElement) { Tree tree = (Tree) parentElement; return tree.getChildren().toArray(); } public Object getParent(Object element) { return ((Tree) element).getParent(); } public boolean hasChildren(Object element) { Tree tree = (Tree) element; return tree.hasChildren(); } public Object[] getElements(Object inputElement) { return acls.getChildren().toArray(); } public void dispose() { // TODO Auto-generated method stub } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { // TODO Auto-generated method stub } }); tv.setLabelProvider(new LabelProvider() { @Override public String getText(Object element) { return (String) ((Tree<ACE>) element).contents.getLocalizedName(); } }); tv.getControl().setLayoutData(SWTHelper.getFillGridData(1, true, 1, true)); Composite cBottom = new Composite(this, SWT.NONE); cBottom.setLayoutData(SWTHelper.getFillGridData(1, true, 1, false)); cBottom.setLayout(new GridLayout(2, true)); new Label(cBottom, SWT.NONE).setText(StringConstants.ROLES_DEFAULT); new Label(cBottom, SWT.NONE).setText(StringConstants.ROLE_USERS); lbGroups = new org.eclipse.swt.widgets.List(cBottom, SWT.MULTI | SWT.V_SCROLL); lbUsers = new org.eclipse.swt.widgets.List(cBottom, SWT.MULTI | SWT.V_SCROLL); lbUsers.setLayoutData(SWTHelper.getFillGridData(1, true, 1, true)); lbGroups.setLayoutData(SWTHelper.getFillGridData(1, true, 1, true)); lUsers = Hub.getUserList(); for (Anwender an : lUsers) { lbUsers.add(an.getLabel()); } List<String> lGroups = Hub.acl.getGroups(); for (String s : lGroups) { lbGroups.add(s); } tv.addSelectionChangedListener(new ISelectionChangedListener() { /** * if the user selects an ACL from the TreeViewer, we want to select users and groups * that are granted this acl in the lbGroups and lbUsers ListBoxes */ public void selectionChanged(SelectionChangedEvent event) { IStructuredSelection sel = (IStructuredSelection) event.getSelection(); lbGroups.deselectAll(); lbUsers.deselectAll(); if (!sel.isEmpty()) { Tree<ACE> acl = (Tree<ACE>) sel.getFirstElement(); ACE right = acl.contents; List<String> grps = Hub.acl.groupsForGrant(right); List<Anwender> users = Hub.acl.usersForGrant(right); for (String g : grps) { int idx = StringTool.getIndex(lbGroups.getItems(), g); if (idx != -1) { lbGroups.select(idx); } } for (Anwender an : users) { int idx = StringTool.getIndex(lbUsers.getItems(), an.getLabel()); if (idx != -1) { lbUsers.select(idx); } } } } }); lbGroups.addSelectionListener(new SelectionAdapter() { @SuppressWarnings("unchecked") public void widgetSelected(SelectionEvent arg0) { IStructuredSelection sel = (IStructuredSelection) tv.getSelection(); if (!sel.isEmpty()) { Tree<ACE> acl = (Tree<ACE>) sel.getFirstElement(); ACE right = acl.contents; String[] gsel = lbGroups.getSelection(); for (String g : lbGroups.getItems()) { Hub.acl.revoke(g, right); } for (String g : gsel) { Hub.acl.grant(g, right); } } } }); lbUsers.addSelectionListener(new SelectionAdapter() { @SuppressWarnings("unchecked") public void widgetSelected(SelectionEvent arg0) { IStructuredSelection sel = (IStructuredSelection) tv.getSelection(); if (!sel.isEmpty()) { Tree<ACE> acl = (Tree<ACE>) sel.getFirstElement(); ACE right = acl.contents; int[] uSel = lbUsers.getSelectionIndices(); for (Anwender an : lUsers) { Hub.acl.revoke(an, right); } for (int i : uSel) { Hub.acl.grant(lUsers.get(i), right); } } } }); tv.setSorter(new ViewerSorter() { @SuppressWarnings("unchecked") @Override public int compare(Viewer viewer, Object e1, Object e2) { Tree<ACE> t1 = (Tree<ACE>) e1; Tree<ACE> t2 = (Tree<ACE>) e2; return t1.contents.getLocalizedName().compareToIgnoreCase(t2.contents.getLocalizedName()); } }); tv.setInput(this); } public void reload() { } public void flush() { Hub.acl.flush(); } }