Add hotkey for expand/collapse project tree

ide/che-core-ide-api/src/main/java/org/eclipse/che/ide/api/data/tree/TreeExpander.java

@@ -0,0 +1,47 @@
+/*******************************************************************************
+ * 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.api.data.tree;
+
+import com.google.common.annotations.Beta;
+
+/**
+ * Component which performs basic tree operation such as expand and collapse.
+ *
+ * @author Vlad Zhukovskyi
+ * @since 5.0.0
+ */
+@Beta
+public interface TreeExpander {
+
+    /**
+     * Perform tree expand in case if {@link #isExpandEnabled()} returns {@code true}.
+     */
+    void expandTree();
+
+    /**
+     * Returns {@code true} in case if tree expand is possible.
+     *
+     * @return {@code true} in case if tree expand is possible, otherwise {@code false}
+     */
+    boolean isExpandEnabled();
+
+    /**
+     * Perform tree collapse in case if {@link #isCollapseEnabled()} returns {@code true}.
+     */
+    void collapseTree();
+
+    /**
+     * Returns {@code true} in case if tree collapse is possible.
+     *
+     * @return {@code true} in case if tree collapse is possible, otherwise {@code false}
+     */
+    boolean isCollapseEnabled();
+}

ide/che-core-ide-app/src/main/java/org/eclipse/che/ide/actions/common/ActionFactory.java

@@ -0,0 +1,65 @@
+/*******************************************************************************
+ * 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.actions.common;
+
+import com.google.common.annotations.Beta;
+
+import org.eclipse.che.ide.api.action.Action;
+import org.eclipse.che.ide.api.data.tree.TreeExpander;
+
+/**
+ * Utility methods to create basic common actions.
+ *
+ * @author Vlad Zhukovskyi
+ * @since 5.0.0
+ */
+@Beta
+public class ActionFactory {
+
+    /**
+     * Returns the instance of the {@link TreeExpandAction} based on the given {@code expander}.
+     *
+     * @param expander
+     *         tree expander
+     * @return instance of the {@link TreeExpandAction}
+     * @see TreeExpandAction
+     * @see TreeExpander
+     * @since 5.0.0
+     */
+    public Action createExpandTreeAction(final TreeExpander expander) {
+        return new TreeExpandAction() {
+            @Override
+            public TreeExpander getTreeExpander() {
+                return expander;
+            }
+        };
+    }
+
+    /**
+     * Returns the instance of the {@link TreeCollapseAction} based on the given {@code expander}.
+     *
+     * @param expander
+     *         tree expander
+     * @return instance of the {@link TreeCollapseAction}
+     * @see TreeCollapseAction
+     * @see TreeExpander
+     * @since 5.0.0
+     */
+    public Action createCollapseTreeAction(final TreeExpander expander) {
+        return new TreeCollapseAction() {
+            @Override
+            public TreeExpander getTreeExpander() {
+                return expander;
+            }
+        };
+    }
+
+}

ide/che-core-ide-app/src/main/java/org/eclipse/che/ide/actions/common/TreeCollapseAction.java

@@ -0,0 +1,53 @@
+/*******************************************************************************
+ * 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.actions.common;
+
+import org.eclipse.che.ide.api.action.Action;
+import org.eclipse.che.ide.api.action.ActionEvent;
+import org.eclipse.che.ide.api.data.tree.TreeExpander;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Base tree collapse action which consumes instance of {@link TreeExpander}.
+ *
+ * @author Vlad Zhukovskyi
+ * @see TreeExpander
+ * @since 5.0.0
+ */
+public abstract class TreeCollapseAction extends Action {
+
+    public abstract TreeExpander getTreeExpander();
+
+    public TreeCollapseAction() {
+        super("Collapse All");
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        final TreeExpander treeExpander = getTreeExpander();
+
+        checkNotNull(treeExpander);
+
+        if (!treeExpander.isCollapseEnabled()) {
+            return;
+        }
+
+        treeExpander.collapseTree();
+    }
+
+    @Override
+    public void update(ActionEvent e) {
+        final TreeExpander treeExpander = getTreeExpander();
+
+        e.getPresentation().setEnabledAndVisible(treeExpander.isCollapseEnabled());
+    }
+}

ide/che-core-ide-app/src/main/java/org/eclipse/che/ide/actions/common/TreeExpandAction.java

@@ -0,0 +1,53 @@
+/*******************************************************************************
+ * 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.actions.common;
+
+import org.eclipse.che.ide.api.action.Action;
+import org.eclipse.che.ide.api.action.ActionEvent;
+import org.eclipse.che.ide.api.data.tree.TreeExpander;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Base tree expand action which consumes instance of {@link TreeExpander}.
+ *
+ * @author Vlad Zhukovskyi
+ * @see TreeExpander
+ * @since 5.0.0
+ */
+public abstract class TreeExpandAction extends Action {
+
+    public abstract TreeExpander getTreeExpander();
+
+    public TreeExpandAction() {
+        super("Expand All");
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        final TreeExpander treeExpander = getTreeExpander();
+
+        checkNotNull(treeExpander);
+
+        if (!treeExpander.isExpandEnabled()) {
+            return;
+        }
+
+        treeExpander.expandTree();
+    }
+
+    @Override
+    public void update(ActionEvent e) {
+        final TreeExpander treeExpander = getTreeExpander();
+
+        e.getPresentation().setEnabledAndVisible(treeExpander.isExpandEnabled());
+    }
+}

ide/che-core-ide-app/src/main/java/org/eclipse/che/ide/part/explorer/project/ProjectExplorerPresenter.java

@@ -11,18 +11,28 @@
 package org.eclipse.che.ide.part.explorer.project;
 
 import com.google.common.base.Optional;
+import com.google.common.base.Predicate;
 import com.google.gwt.core.client.Scheduler;
 import com.google.gwt.user.client.ui.AcceptsOneWidget;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import com.google.web.bindery.event.shared.EventBus;
 
+import org.eclipse.che.api.promises.client.Operation;
+import org.eclipse.che.api.promises.client.OperationException;
 import org.eclipse.che.commons.annotation.Nullable;
 import org.eclipse.che.ide.CoreLocalizationConstant;
 import org.eclipse.che.ide.Resources;
+import org.eclipse.che.ide.api.action.Action;
+import org.eclipse.che.ide.actions.common.ActionFactory;
+import org.eclipse.che.ide.api.action.ActionManager;
+import org.eclipse.che.ide.api.app.AppContext;
 import org.eclipse.che.ide.api.data.tree.Node;
+import org.eclipse.che.ide.api.data.tree.TreeExpander;
 import org.eclipse.che.ide.api.data.tree.settings.NodeSettings;
 import org.eclipse.che.ide.api.data.tree.settings.SettingsProvider;
+import org.eclipse.che.ide.api.keybinding.KeyBindingAgent;
+import org.eclipse.che.ide.api.keybinding.KeyBuilder;
 import org.eclipse.che.ide.api.mvp.View;
 import org.eclipse.che.ide.api.parts.ProjectExplorerPart;
 import org.eclipse.che.ide.api.parts.base.BasePresenter;
@@ -37,11 +47,13 @@
 import org.eclipse.che.ide.api.selection.Selection;
 import org.eclipse.che.ide.api.workspace.event.WorkspaceStoppedEvent;
 import org.eclipse.che.ide.part.explorer.project.ProjectExplorerView.ActionDelegate;
+import org.eclipse.che.ide.project.node.SyntheticNode;
 import org.eclipse.che.ide.project.node.SyntheticNodeUpdateEvent;
 import org.eclipse.che.ide.resource.Path;
 import org.eclipse.che.ide.resources.tree.ResourceNode;
 import org.eclipse.che.ide.ui.smartTree.NodeDescriptor;
 import org.eclipse.che.ide.ui.smartTree.Tree;
+import org.eclipse.che.ide.ui.smartTree.event.BeforeExpandNodeEvent;
 import org.eclipse.che.ide.ui.smartTree.event.SelectionChangedEvent;
 import org.eclipse.che.ide.ui.smartTree.event.SelectionChangedEvent.SelectionChangedHandler;
 import org.eclipse.che.providers.DynaObject;
@@ -50,6 +62,8 @@
 import javax.validation.constraints.NotNull;
 
 import static com.google.common.base.MoreObjects.firstNonNull;
+import static com.google.common.base.Preconditions.checkNotNull;
+import static com.google.common.collect.Iterables.any;
 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.MOVED_TO;
@@ -85,7 +99,11 @@ public ProjectExplorerPresenter(final ProjectExplorerView view,
                                     CoreLocalizationConstant locale,
                                     Resources resources,
                                     final ResourceNode.NodeFactory nodeFactory,
-                                    final SettingsProvider settingsProvider) {
+                                    final SettingsProvider settingsProvider,
+                                    ActionManager actionManager,
+                                    ActionFactory actionFactory,
+                                    final AppContext appContext,
+                                    KeyBindingAgent keyBindingAgent) {
         this.view = view;
         this.nodeFactory = nodeFactory;
         this.settingsProvider = settingsProvider;
@@ -109,6 +127,78 @@ public void onSelectionChanged(SelectionChangedEvent event) {
                 setSelection(new Selection<>(event.getSelection()));
             }
         });
+
+        view.getTree().addBeforeExpandHandler(new BeforeExpandNodeEvent.BeforeExpandNodeHandler() {
+            @Override
+            public void onBeforeExpand(BeforeExpandNodeEvent event) {
+                final NodeDescriptor nodeDescriptor = view.getTree().getNodeDescriptor(event.getNode());
+
+                if (event.getNode() instanceof SyntheticNode && nodeDescriptor != null && nodeDescriptor.isExpandDeep()) {
+                    event.setCancelled(true);
+                }
+            }
+        });
+
+        final TreeExpander treeExpander = new TreeExpander() {
+
+            private final boolean[] everExpanded = new boolean[]{false};
+
+            @Override
+            public void expandTree() {
+                if (everExpanded[0]) {
+                    view.getTree().expandAll();
+
+                    return;
+                }
+
+                appContext.getWorkspaceRoot().getTree(-1).then(new Operation<Resource[]>() {
+                    @Override
+                    public void apply(Resource[] ignored) throws OperationException {
+                        everExpanded[0] = true;
+
+                        view.getTree().expandAll();
+                    }
+                });
+            }
+
+            @Override
+            public boolean isExpandEnabled() {
+                return view.getTree().getNodeStorage().getAllItemsCount() != 0;
+            }
+
+            @Override
+            public void collapseTree() {
+                view.getTree().collapseAll();
+            }
+
+            @Override
+            public boolean isCollapseEnabled() {
+                return any(view.getTree().getRootNodes(), isExpanded());
+            }
+        };
+
+        final Action expandTreeAction = actionFactory.createExpandTreeAction(treeExpander);
+        final Action collapseTreeAction = actionFactory.createCollapseTreeAction(treeExpander);
+
+        final String expandTreeActionId = "expandProjectExplorerTree";
+        final String collapseTreeActionId = "collapseProjectExplorerTree";
+
+        actionManager.registerAction(expandTreeActionId, expandTreeAction);
+        actionManager.registerAction(collapseTreeActionId, collapseTreeAction);
+
+        keyBindingAgent.getGlobal().addKey(new KeyBuilder().action().charCode('[').build(), expandTreeActionId);
+        keyBindingAgent.getGlobal().addKey(new KeyBuilder().action().charCode(']').build(), collapseTreeActionId);
+    }
+
+    private Predicate<Node> isExpanded() {
+        return new Predicate<Node>() {
+            @Override
+            public boolean apply(@javax.annotation.Nullable Node node) {
+                checkNotNull(node);
+
+                return view.getTree().isExpanded(node);
+            }
+        };
     }
 
     @Override

ide/che-core-ide-app/src/main/java/org/eclipse/che/ide/resources/impl/ResourceManager.java

@@ -631,10 +631,10 @@ Promise<Resource[]> getRemoteResources(final Container container, final int dept
             return promises.resolve(NO_RESOURCES);
         }
 
+        int depthToReload = depth;
         final Optional<Resource[]> descendants = store.getAll(container.getLocation());
 
-        int depthToReload = depth;
-        if (descendants.isPresent()) {
+        if (depthToReload != -1 && descendants.isPresent()) {
             for (Resource resource : descendants.get()) {
                 if (resource.getLocation().segmentCount() - container.getLocation().segmentCount() > depth) {
                     depthToReload = resource.getLocation().segmentCount() - container.getLocation().segmentCount();

ide/che-core-ide-ui/src/main/java/org/eclipse/che/ide/ui/smartTree/Tree.java

@@ -1163,6 +1163,10 @@ private void onExpand(Node node, NodeDescriptor nodeDescriptor, boolean deep) {
         }
 
         if (!fireCancellableEvent(new BeforeExpandNodeEvent(node))) {
+            if (deep) {
+                nodeDescriptor.setExpandDeep(false);
+            }
+
             return;
         }