Java tutorial
/******************************************************************************* * Copyright (c) 2013 Red Hat, Inc. * All rights reserved. * This program is 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: * Red Hat, Inc. - initial API and implementation * ******************************************************************************/ package org.fusesource.ide.fabric.navigator; import io.fabric8.api.Container; import io.fabric8.api.Version; import java.util.ArrayList; import java.util.HashSet; import java.util.Iterator; import java.util.List; import java.util.Set; 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.action.Separator; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.views.properties.IPropertySource; import org.fusesource.ide.commons.Viewers; import org.fusesource.ide.commons.jobs.Jobs; import org.fusesource.ide.commons.tree.Refreshables; import org.fusesource.ide.commons.ui.Selections; import org.fusesource.ide.commons.ui.Shells; import org.fusesource.ide.commons.ui.actions.ActionSupport; import org.fusesource.ide.commons.ui.actions.SeparatorFactory; import org.fusesource.ide.commons.util.Objects; import org.fusesource.ide.fabric.FabricPlugin; import org.fusesource.ide.fabric.actions.CreateChildContainerAction; import org.fusesource.ide.fabric.actions.CreateSshContainerAction; import org.fusesource.ide.fabric.actions.Messages; import org.fusesource.ide.fabric.actions.jclouds.CreateJCloudsContainerAction; import com.google.common.base.Predicate; import com.google.common.collect.Iterables; import com.google.common.collect.Lists; public abstract class AbstractContainersTabSection extends ContainerTableView { protected static SeparatorFactory separatorFactory = new SeparatorFactory(ContainerTableSheetPage.VIEW_ID); private Fabric fabric; private Object current; private Action openTerminalAction; private Action startAction; private Action stopAction; private Action destroyAction; private ActionWrapper createContainerAction; private ActionWrapper createCloudAction; private ActionWrapper createSshAction; private CreateChildContainerAction createChildContainerAction; private CreateJCloudsContainerAction createCloudContainerAction; private CreateSshContainerAction createSshContainerAction; private MenuManager setVersionMenu; private Separator separator1 = separatorFactory.createSeparator(); private Separator separator2 = separatorFactory.createSeparator(); private Separator separator3 = separatorFactory.createSeparator(); private Separator separator4 = separatorFactory.createSeparator(); private Runnable refreshRunnable = new Runnable() { @Override public void run() { Viewers.async(new Runnable() { @Override public void run() { if (fabric == null) { return; } final Set<String> selectedIds = getSelectedIds(); Refreshables.refresh(fabric.getContainersNode()); updateData(); Refreshables.refresh(this); setSelectedContainerIds(selectedIds); updateActionStatus(); } }); } }; public AbstractContainersTabSection() { super(ContainerTableSheetPage.VIEW_ID); openTerminalAction = new ActionSupport(Messages.openTerminalLabel, Messages.openTerminalToolTip, FabricPlugin.getDefault().getImageDescriptor("terminal_view.gif")) { @Override public void run() { List<Container> selectedContainers = getSelectedContainers(); if (selectedContainers.size() > 0) { Container container = selectedContainers.get(0); if (container != null) { ContainerNode.openTerminal(getFabric(), container, null); } } } }; startAction = new ActionSupport(Messages.StartAgentAction, Messages.StartAgentActionToolTip, FabricPlugin.getDefault().getImageDescriptor("start_task.gif")) { @Override public void run() { start(); } @Override public boolean isEnabled() { List<Container> selectedContainers = getSelectedContainers(); if (selectedContainers.size() > 0) { Container container = selectedContainers.get(0); if (container != null && container.isRoot()) { return false; } } return true; } }; stopAction = new ActionSupport(Messages.StopAgentAction, Messages.StopAgentActionToolTip, FabricPlugin.getDefault().getImageDescriptor("stop_task.gif")) { @Override public void run() { stop(); } @Override public boolean isEnabled() { List<Container> selectedContainers = getSelectedContainers(); if (selectedContainers.size() > 0) { Container container = selectedContainers.get(0); if (container != null && container.isRoot()) { return false; } } return true; } }; destroyAction = new ActionSupport(Messages.DestroyContainerAction, Messages.DestroyContainerActionToolTip, FabricPlugin.getDefault().getImageDescriptor("delete.gif")) { @Override public void run() { destroy(); } @Override public boolean isEnabled() { List<Container> selectedContainers = getSelectedContainers(); if (selectedContainers.size() > 0) { Container container = selectedContainers.get(0); if (container != null && container.isRoot()) { return false; } } return true; } }; setVersionMenu = new MenuManager("Set Version", FabricPlugin.getDefault().getImageDescriptor("version.png"), "org.fusesource.ide.actions.update.version"); setVersionMenu.setRemoveAllWhenShown(true); setVersionMenu.addMenuListener(new IMenuListener() { @Override public void menuAboutToShow(IMenuManager manager) { Version[] versions = getFabric().getFabricService().getVersions(); Set<String> selectedVersionNames = getSelectedVersionNames(); for (final Version version : versions) { Action action = new Action(version.getName()) { @Override public void run() { setSelectedContainersVersion(version); } }; action.setEnabled(hasVersionApartFrom(selectedVersionNames, version)); setVersionMenu.add(action); } } }); createContainerAction = new ActionWrapper(Messages.createChildAgentMenuLabel, Messages.createChildAgentToolTip, FabricPlugin.getDefault().getImageDescriptor("add_obj.gif")) { @Override protected Action getDelegate() { return createChildContainerAction; } }; createCloudAction = new ActionWrapper(Messages.createJCloudsAgentMenuLabel, Messages.createJCloudsAgentToolTip, FabricPlugin.getDefault().getImageDescriptor("new_cloud_container.png")) { @Override protected Action getDelegate() { return createCloudContainerAction; } }; createSshAction = new ActionWrapper(Messages.createSshAgentMenuLabel, Messages.createSshAgentToolTip, FabricPlugin.getDefault().getImageDescriptor("new_ssh_container.png")) { @Override protected Action getDelegate() { return createSshContainerAction; } }; } @Override public void setInput(IWorkbenchPart part, ISelection selection) { Object containers = Selections.getFirstSelection(selection); if (containers == current) { return; } if (fabric != null) { fabric.removeFabricUpdateRunnable(refreshRunnable); } current = containers; fabric = getFabricForNode(containers); if (fabric != null) { fabric.addFabricUpdateRunnable(refreshRunnable); } List<?> propertySources = getPropertySourcesForNode(containers); setPropertySources(propertySources); if (getViewer() == null) createViewer(); getViewer().setInput(propertySources); recreateColumns(); getViewer().refresh(true); createChildContainerAction = createChildContainerAction(current); createCloudContainerAction = createCloudContainerAction(current); createSshContainerAction = createSshContainerAction(current); updateActionStatus(); } protected abstract Fabric getFabricForNode(Object node); protected abstract List<?> getPropertySourcesForNode(Object node); @Override protected void recreateColumns() { if (current != null) { super.recreateColumns(); } } @Override public void dispose() { if (fabric != null) { fabric.removeFabricUpdateRunnable(refreshRunnable); } super.dispose(); } protected void stop() { final List<Container> containers = getSelectedContainers(); String message = Objects.makeString("Stopping ", ", ", "", getSelectedIds()); Jobs.schedule(message, new Runnable() { @Override public void run() { for (Container container : containers) { if (container.isAlive()) { container.stop(); } } Display.getDefault().syncExec(new Runnable() { @Override public void run() { fabric.getContainersNode().refresh(); updateData(); refresh(); } }); } }); } protected void start() { final List<Container> containers = getSelectedContainers(); String message = Objects.makeString("Starting ", ", ", "", getSelectedIds()); Jobs.schedule(message, new Runnable() { @Override public void run() { for (Container container : containers) { if (!container.isAlive()) { container.start(); } } Display.getDefault().syncExec(new Runnable() { @Override public void run() { fabric.getContainersNode().refresh(); updateData(); refresh(); } }); } }); } protected void destroy() { final List<Container> containers = getSelectedContainers(); boolean confirm = MessageDialog.openConfirm(Shells.getShell(), "Destroy Container(s)", Objects.makeString("Do you really want to destroy the selected container(s) ", ", ", "?\nThis will terminate the container process and removes it from Fabric!", getSelectedIds())); if (confirm) { Jobs.schedule(Objects.makeString("Destroying container(s) ", ", ", "", getSelectedIds()), new Runnable() { @Override public void run() { for (Container container : containers) { container.destroy(); } Display.getDefault().syncExec(new Runnable() { @Override public void run() { fabric.getContainersNode().refresh(); updateData(); refresh(); } }); } }); } } public Fabric getFabric() { return fabric; } @Override public void createPartControl(Composite parent) { super.createPartControl(parent); addToolBarActions(openTerminalAction, startAction, stopAction, destroyAction); addLocalMenuActions(separator1, openTerminalAction, startAction, stopAction, destroyAction, separator2, setVersionMenu, separator3, createContainerAction, createCloudAction, createSshAction, separator4); addToolBarActions(openTerminalAction, setVersionMenu, startAction, stopAction, destroyAction); setDoubleClickAction(new Action() { @Override public void run() { if (fabric == null) { return; } ContainersNode containersNode = fabric.getContainersNode(); if (containersNode != null) { List<Container> selectedContainers = getSelectedContainers(); if (!selectedContainers.isEmpty()) { Container container = selectedContainers.get(0); ContainerNode containerNode = containersNode.getContainerNode(container.getId()); if (containerNode != null) { Selections.setSingleSelection(fabric.getRefreshableUI(), containerNode); } } } } }); if (getViewer() == null) { createViewer(); } getViewer().addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { updateActionStatus(); } }); } protected int countStarted(List<Container> containers, boolean flag) { int counter = 0; for (Container container : containers) { boolean alive = container.isAlive(); if (alive == flag) { counter++; } } return counter; } protected List<Container> getSelectedContainers() { List<Container> containers = new ArrayList<Container>(); IStructuredSelection selection = getSelection(); if (selection != null) { boolean changed = false; Iterator iterator = selection.iterator(); while (iterator.hasNext()) { Container container = ContainerNode.toContainer(iterator.next()); if (container != null) { containers.add(container); } } } return containers; } protected IStructuredSelection getSelection() { return Selections.getStructuredSelection(getViewer()); } protected Set<String> getSelectedVersionNames() { Set<String> answer = new HashSet<String>(); List<Container> containers = getSelectedContainers(); for (Container container : containers) { Version version = container.getVersion(); if (version != null) { String name = version.getName(); if (name != null) { answer.add(name); } } } return answer; } protected Set<String> getSelectedIds() { Set<String> answer = new HashSet<String>(); List<Container> containers = getSelectedContainers(); for (Container container : containers) { String id = container.getId(); if (id != null) { answer.add(id); } } return answer; } protected void setSelectedContainerIds(Set<String> selectedIds) { TableViewer viewer = getViewer(); if (viewer != null) { List<?> propertySources = getPropertySources(); List selected = new ArrayList(); for (Object object : propertySources) { if (object instanceof IPropertySource) { IPropertySource source = (IPropertySource) object; Object value = source.getPropertyValue("id"); if (value instanceof String && selectedIds.contains(value.toString())) { selected.add(object); } } } viewer.setSelection(new StructuredSelection(selected)); if (selected.size() == 1) { Object first = selected.get(0); viewer.reveal(first); } } } protected void setSelectedContainersVersion(Version version) { IStructuredSelection selection = getSelection(); if (selection != null) { boolean changed = false; Iterator iterator = selection.iterator(); while (iterator.hasNext()) { ContainerNode agentNode = ContainerNode.toContainerNode(iterator.next()); if (agentNode != null) { if (!agentNode.matches(version)) { agentNode.getContainer().setVersion(version); changed = true; } } } if (changed) { refresh(); getFabric().getContainersNode().refresh(); getFabric().getVersionsNode().refresh(); } } } protected void updateData() { setPropertySources(getPropertySourcesForNode(current)); } protected boolean hasVersionApartFrom(Set<String> names, Version version) { int minSize = names.contains(version.getName()) ? 2 : 1; return names.size() >= minSize; } protected abstract CreateJCloudsContainerAction createCloudContainerAction(Object current); protected abstract CreateSshContainerAction createSshContainerAction(Object current); protected abstract CreateChildContainerAction createChildContainerAction(Object current); protected void updateActionStatus() { List<Container> selectedContainers = getSelectedContainers(); ContainerNode containerNode = getSingleSelectedRootContainerNode(selectedContainers); createChildContainerAction.setContainerNode(containerNode); createChildContainerAction.updateEnabled(); int selectedContainerSize = selectedContainers.size(); openTerminalAction.setEnabled(selectedContainerSize > 0); boolean isRootContainerSelected = false; if (selectedContainers.size() > 0 && selectedContainers.get(0).isRoot()) { isRootContainerSelected = true; } startAction.setEnabled(!isRootContainerSelected); stopAction.setEnabled(!isRootContainerSelected); destroyAction.setEnabled(!isRootContainerSelected); } protected ContainerNode getSingleSelectedRootContainerNode(List<Container> selectedContainers) { ArrayList<Container> rootContainers = Lists .newArrayList(Iterables.filter(selectedContainers, new Predicate<Container>() { @Override public boolean apply(Container container) { return container != null && container.isRoot(); } })); if (rootContainers.size() == 1 && fabric != null) { Container rootContainer = rootContainers.get(0); ContainersNode containersNode = fabric.getContainersNode(); if (containersNode != null) { return containersNode.getContainerNode(rootContainer.getId()); } } return null; } private abstract static class ActionWrapper extends ActionSupport { public ActionWrapper(String text, String tooltip, ImageDescriptor image) { super(text, tooltip, image); } @Override public boolean isEnabled() { return getDelegate() != null && getDelegate().isEnabled(); } @Override public void run() { if (getDelegate() == null) { return; } getDelegate().run(); } protected abstract Action getDelegate(); } }