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AppContextImpl.java
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/
AppContextImpl.java
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/*******************************************************************************
* Copyright (c) 2012-2016 Codenvy, S.A.
* 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:
* Codenvy, S.A. - initial API and implementation
*******************************************************************************/
package org.eclipse.che.ide.context;
import com.google.common.collect.Sets;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import com.google.web.bindery.event.shared.EventBus;
import org.eclipse.che.api.core.model.workspace.Workspace;
import org.eclipse.che.api.factory.shared.dto.FactoryDto;
import org.eclipse.che.api.promises.client.Operation;
import org.eclipse.che.api.promises.client.OperationException;
import org.eclipse.che.ide.api.app.AppContext;
import org.eclipse.che.ide.api.app.CurrentUser;
import org.eclipse.che.ide.api.app.StartUpAction;
import org.eclipse.che.ide.api.data.HasDataObject;
import org.eclipse.che.ide.api.editor.EditorAgent;
import org.eclipse.che.ide.api.editor.EditorPartPresenter;
import org.eclipse.che.ide.api.event.SelectionChangedEvent;
import org.eclipse.che.ide.api.event.SelectionChangedHandler;
import org.eclipse.che.ide.api.event.WindowActionEvent;
import org.eclipse.che.ide.api.event.WindowActionHandler;
import org.eclipse.che.ide.api.machine.DevMachine;
import org.eclipse.che.ide.api.resources.Container;
import org.eclipse.che.ide.api.resources.Project;
import org.eclipse.che.ide.api.resources.Resource;
import org.eclipse.che.ide.api.resources.ResourceChangedEvent;
import org.eclipse.che.ide.api.resources.ResourceChangedEvent.ResourceChangedHandler;
import org.eclipse.che.ide.api.resources.ResourceDelta;
import org.eclipse.che.ide.api.resources.ResourcePathComparator;
import org.eclipse.che.ide.api.resources.VirtualFile;
import org.eclipse.che.ide.api.selection.Selection;
import org.eclipse.che.ide.api.workspace.WorkspaceReadyEvent;
import org.eclipse.che.ide.api.workspace.event.WorkspaceStoppedEvent;
import org.eclipse.che.ide.project.node.SyntheticNode;
import org.eclipse.che.ide.resource.Path;
import org.eclipse.che.ide.resources.impl.ResourceDeltaImpl;
import org.eclipse.che.ide.resources.impl.ResourceManager;
import org.eclipse.che.ide.statepersistance.AppStateManager;
import org.eclipse.che.ide.util.Arrays;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
import static java.util.Arrays.binarySearch;
import static java.util.Arrays.copyOf;
import static java.util.Arrays.sort;
import static org.eclipse.che.ide.api.resources.Resource.PROJECT;
import static org.eclipse.che.ide.api.resources.ResourceDelta.ADDED;
import static org.eclipse.che.ide.api.resources.ResourceDelta.MOVED_FROM;
import static org.eclipse.che.ide.api.resources.ResourceDelta.REMOVED;
import static org.eclipse.che.ide.api.resources.ResourceDelta.SYNCHRONIZED;
import static org.eclipse.che.ide.api.resources.ResourceDelta.UPDATED;
/**
* Implementation of {@link AppContext}.
*
* @author Vitaly Parfonov
* @author Artem Zatsarynnyi
* @author Vlad Zhukovskyi
*/
@Singleton
public class AppContextImpl implements AppContext,
SelectionChangedHandler,
ResourceChangedHandler,
WindowActionHandler,
WorkspaceStoppedEvent.Handler {
private final BrowserQueryFieldRenderer browserQueryFieldRenderer;
private final List<String> projectsInImport;
private Workspace usersWorkspace;
private CurrentUser currentUser;
private FactoryDto factory;
private DevMachine devMachine;
private Path projectsRoot;
/**
* List of actions with parameters which comes from startup URL.
* Can be processed after IDE initialization as usual after starting ws-agent.
*/
private List<StartUpAction> startAppActions;
private Resource currentResource;
private Resource[] currentResources;
@Inject
public AppContextImpl(EventBus eventBus,
BrowserQueryFieldRenderer browserQueryFieldRenderer,
ResourceManager.ResourceManagerFactory resourceManagerFactory,
Provider<EditorAgent> editorAgentProvider,
Provider<AppStateManager> appStateManager) {
this.eventBus = eventBus;
this.browserQueryFieldRenderer = browserQueryFieldRenderer;
this.resourceManagerFactory = resourceManagerFactory;
this.editorAgentProvider = editorAgentProvider;
this.appStateManager = appStateManager;
projectsInImport = new ArrayList<>();
eventBus.addHandler(SelectionChangedEvent.TYPE, this);
eventBus.addHandler(ResourceChangedEvent.getType(), this);
eventBus.addHandler(WindowActionEvent.TYPE, this);
eventBus.addHandler(WorkspaceStoppedEvent.TYPE, this);
}
@Override
public Workspace getWorkspace() {
return usersWorkspace;
}
@Override
public void setWorkspace(Workspace workspace) {
this.usersWorkspace = workspace;
}
@Override
public String getWorkspaceId() {
if (usersWorkspace == null) {
throw new IllegalArgumentException(getClass() + " Workspace can not be null.");
}
return usersWorkspace.getId();
}
@Override
public CurrentUser getCurrentUser() {
return currentUser;
}
public void setCurrentUser(CurrentUser currentUser) {
this.currentUser = currentUser;
}
@Override
public List<String> getImportingProjects() {
return projectsInImport;
}
@Override
public void addProjectToImporting(String pathToProject) {
projectsInImport.add(pathToProject);
}
@Override
public void removeProjectFromImporting(String pathToProject) {
projectsInImport.remove(pathToProject);
}
@Override
public List<StartUpAction> getStartAppActions() {
return startAppActions;
}
@Override
public void setStartUpActions(List<StartUpAction> startUpActions) {
this.startAppActions = startUpActions;
}
@Override
public FactoryDto getFactory() {
return factory;
}
@Override
public void setFactory(FactoryDto factory) {
this.factory = factory;
}
@Override
public DevMachine getDevMachine() {
return devMachine;
}
public void setDevMachine(DevMachine devMachine) {
checkState(devMachine != null);
if (this.devMachine != null && this.devMachine.getId().equals(devMachine.getId())) {
return;
}
browserQueryFieldRenderer.setProjectName("");
if (projects != null) {
for (Project project : projects) {
eventBus.fireEvent(new ResourceChangedEvent(new ResourceDeltaImpl(project, REMOVED)));
}
projects = null;
}
this.devMachine = devMachine;
resourceManager = resourceManagerFactory.newResourceManager(devMachine);
resourceManager.getWorkspaceProjects().then(new Operation<Project[]>() {
@Override
public void apply(Project[] projects) throws OperationException {
AppContextImpl.this.projects = projects;
java.util.Arrays.sort(AppContextImpl.this.projects, ResourcePathComparator.getInstance());
eventBus.fireEvent(new WorkspaceReadyEvent(projects));
}
});
}
@Override
public String getWorkspaceName() {
return usersWorkspace.getConfig().getName();
}
/** {@inheritDoc} */
@Override
public void onResourceChanged(ResourceChangedEvent event) {
final ResourceDelta delta = event.getDelta();
final Resource resource = delta.getResource();
/* Note: There is important to keep projects array in sorted state, because it is mutable and removing projects from it
need array to be sorted. Search specific projects realized with binary search. */
if (!(resource.getResourceType() == PROJECT && resource.getLocation().segmentCount() == 1)) {
return;
}
if (projects == null) {
return; //Normal situation, workspace config updated and project has not been loaded fully. Just skip this situation.
}
if (delta.getKind() == ADDED) {
Project[] newProjects = copyOf(projects, projects.length + 1);
newProjects[projects.length] = (Project)resource;
projects = newProjects;
sort(projects, ResourcePathComparator.getInstance());
} else if (delta.getKind() == REMOVED) {
int size = projects.length;
int index = java.util.Arrays.binarySearch(projects, resource, ResourcePathComparator.getInstance());
int numMoved = projects.length - index - 1;
if (numMoved > 0) {
System.arraycopy(projects, index + 1, projects, index, numMoved);
}
projects = copyOf(projects, --size);
if (currentResource != null && currentResource.equals(delta.getResource())) {
currentResource = null;
}
if (currentResources != null) {
for (Resource currentResource : currentResources) {
if (currentResource.equals(delta.getResource())) {
currentResources = Arrays.remove(currentResources, currentResource);
}
}
}
} else if (delta.getKind() == UPDATED) {
int index = -1;
// Project may be moved to another location, so we need to remove previous one and store new project in cache.
if (delta.getFlags() == MOVED_FROM) {
for (int i = 0; i < projects.length; i++) {
if (projects[i].getLocation().equals(delta.getFromPath())) {
index = i;
break;
}
}
} else {
index = binarySearch(projects, resource);
}
if (index != -1) {
projects[index] = (Project)resource;
}
sort(projects, ResourcePathComparator.getInstance());
} else if (delta.getKind() == SYNCHRONIZED && resource.isProject() && resource.getLocation().segmentCount() == 1) {
for (int i = 0; i < projects.length; i++) {
if (projects[i].getLocation().equals(resource.getLocation())) {
projects[i] = (Project)resource;
}
}
}
}
@Override
public Path getProjectsRoot() {
return projectsRoot;
}
public void setProjectsRoot(Path projectsRoot) {
this.projectsRoot = projectsRoot;
}
@Override
public void onSelectionChanged(SelectionChangedEvent event) {
final Selection<?> selection = event.getSelection();
if (selection instanceof Selection.NoSelectionProvided) {
return;
}
browserQueryFieldRenderer.setProjectName("");
currentResource = null;
currentResources = null;
if (selection == null || selection.getHeadElement() == null) {
return;
}
final Object headObject = selection.getHeadElement();
final List<?> allObjects = selection.getAllElements();
if (headObject instanceof HasDataObject) {
Object data = ((HasDataObject)headObject).getData();
if (data instanceof Resource) {
currentResource = (Resource)data;
}
} else if (headObject instanceof Resource) {
currentResource = (Resource)headObject;
}
Set<Resource> resources = Sets.newHashSet();
for (Object object : allObjects) {
if (object instanceof HasDataObject) {
Object data = ((HasDataObject)object).getData();
if (data instanceof Resource) {
resources.add((Resource)data);
}
} else if (object instanceof Resource) {
resources.add((Resource)object);
}
}
currentResources = resources.toArray(new Resource[resources.size()]);
}
private final EventBus eventBus;
private final ResourceManager.ResourceManagerFactory resourceManagerFactory;
private final Provider<EditorAgent> editorAgentProvider;
private final Provider<AppStateManager> appStateManager;
private ResourceManager resourceManager;
private Project[] projects;
@Override
public Project[] getProjects() {
return checkNotNull(projects, "Projects is not initialized");
}
@Override
public Container getWorkspaceRoot() {
checkState(resourceManager != null, "Workspace configuration has not been received yet");
return resourceManager.getWorkspaceRoot();
}
@Override
public Resource getResource() {
return currentResource;
}
@Override
public Resource[] getResources() {
return currentResources;
}
@Override
public Project getRootProject() {
if (currentResource == null || currentResources == null) {
EditorAgent editorAgent = editorAgentProvider.get();
if (editorAgent == null) {
return null;
}
final EditorPartPresenter editor = editorAgent.getActiveEditor();
if (editor == null) {
return null;
}
final VirtualFile file = editor.getEditorInput().getFile();
if (file instanceof SyntheticNode) {
final Path projectPath = ((SyntheticNode)file).getProject();
for (Project project : projects) {
if (project.getLocation().equals(projectPath)) {
return project;
}
}
}
}
if (currentResource == null) {
return null;
}
Project root = null;
for (Project project : projects) {
if (project.getLocation().isPrefixOf(currentResource.getLocation())) {
root = project;
}
}
if (root == null) {
return null;
}
for (int i = 1; i < currentResources.length; i++) {
if (!root.getLocation().isPrefixOf(currentResources[i].getLocation())) {
return null;
}
}
return root;
}
@Override
public void onWindowClosing(WindowActionEvent event) {
appStateManager.get().persistWorkspaceState(getWorkspaceId());
}
@Override
public void onWorkspaceStopped(WorkspaceStoppedEvent event) {
appStateManager.get().persistWorkspaceState(getWorkspaceId()).then(new Operation<Void>() {
@Override
public void apply(Void arg) throws OperationException {
browserQueryFieldRenderer.setProjectName("");
for (Project project : projects) {
eventBus.fireEvent(new ResourceChangedEvent(new ResourceDeltaImpl(project, REMOVED)));
}
projects = null;
resourceManager = null;
}
});
devMachine = null;
}
@Override
public void onWindowClosed(WindowActionEvent event) {
}
}