feat: Create a Quarkus Dev Explorer in the IDE

Fixes redhat-developer#1175

Signed-off-by: azerr <[email protected]>

src/main/java/com/redhat/devtools/intellij/quarkus/QuarkusBundle.java

@@ -0,0 +1,45 @@
+/*******************************************************************************
+ * Copyright (c) 2023 Red Hat Inc. and others.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
+ * which is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
+ *
+ * Contributors:
+ *     Red Hat Inc. - initial API and implementation
+ *******************************************************************************/
+package com.redhat.devtools.intellij.quarkus;
+
+import com.intellij.DynamicBundle;
+import org.jetbrains.annotations.Nls;
+import org.jetbrains.annotations.NonNls;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.PropertyKey;
+
+import java.util.function.Supplier;
+
+/**
+ * Quarkus messages bundle.
+ */
+public final class QuarkusBundle extends DynamicBundle {
+
+  @NonNls public static final String BUNDLE = "messages.QuarkusBundle";
+  private static final QuarkusBundle INSTANCE = new QuarkusBundle();
+
+  private QuarkusBundle() {
+    super(BUNDLE);
+  }
+
+  @NotNull
+  public static @Nls String message(@NotNull @PropertyKey(resourceBundle = BUNDLE) String key, Object @NotNull ... params) {
+    return INSTANCE.getMessage(key, params);
+  }
+
+  @NotNull
+  public static Supplier<@Nls String> messagePointer(@NotNull @PropertyKey(resourceBundle = BUNDLE) String key, Object @NotNull ... params) {
+    return INSTANCE.getLazyMessage(key, params);
+  }
+}

src/main/java/com/redhat/devtools/intellij/quarkus/explorer/QuarkusActionNode.java

@@ -0,0 +1,35 @@
+package com.redhat.devtools.intellij.quarkus.explorer;
+
+import com.intellij.icons.AllIcons;
+import com.intellij.openapi.module.Module;
+
+import javax.swing.*;
+import javax.swing.tree.DefaultMutableTreeNode;
+
+public class QuarkusActionNode extends DefaultMutableTreeNode {
+
+    private final String name;
+
+    private final Module module;
+
+    public QuarkusActionNode(String name, Module module) {
+        this.name = name;
+        this.module = module;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Module getModule() {
+        return module;
+    }
+
+    public String getDisplayName() {
+        return name;
+    }
+
+    public Icon getIcon() {
+        return AllIcons.Actions.InlayGear;
+    }
+}

src/main/java/com/redhat/devtools/intellij/quarkus/explorer/QuarkusExplorer.java

@@ -0,0 +1,126 @@
+package com.redhat.devtools.intellij.quarkus.explorer;
+
+import com.intellij.ide.DataManager;
+import com.intellij.openapi.Disposable;
+import com.intellij.openapi.actionSystem.*;
+import com.intellij.openapi.application.ReadAction;
+import com.intellij.openapi.module.Module;
+import com.intellij.openapi.module.ModuleManager;
+import com.intellij.openapi.project.DumbService;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.ui.SimpleToolWindowPanel;
+import com.intellij.ui.AnimatedIcon;
+import com.intellij.ui.DoubleClickListener;
+import com.intellij.ui.treeStructure.Tree;
+import com.intellij.util.concurrency.AppExecutorUtil;
+import com.redhat.devtools.intellij.lsp4ij.console.explorer.LanguageServerTreeRenderer;
+import com.redhat.devtools.intellij.quarkus.explorer.actions.QuarkusDevStartAction;
+import com.redhat.microprofile.psi.quarkus.PsiQuarkusUtils;
+import org.jetbrains.annotations.NotNull;
+
+import javax.swing.tree.DefaultMutableTreeNode;
+import javax.swing.tree.DefaultTreeModel;
+import javax.swing.tree.TreePath;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+import java.awt.event.MouseEvent;
+
+public class QuarkusExplorer extends SimpleToolWindowPanel implements Disposable {
+
+    private final Tree tree;
+    private final Project project;
+
+    public QuarkusExplorer(@NotNull Project project) {
+        super(true, true);
+        this.project = project;
+        tree = buildTree();
+        this.setContent(tree);
+        load();
+    }
+
+    /**
+     * Builds the Language server tree
+     *
+     * @return Tree object of all language servers
+     */
+    private Tree buildTree() {
+
+        DefaultMutableTreeNode top = new DefaultMutableTreeNode("Quarkus projects");
+
+        Tree tree = new Tree(top);
+        tree.setRootVisible(false);
+        tree.setCellRenderer(new QuarkusTreeRenderer());
+
+        tree.putClientProperty(AnimatedIcon.ANIMATION_IN_RENDERER_ALLOWED, true);
+
+        ((DefaultTreeModel) tree.getModel()).reload(top);
+
+
+        var doubleClickListener = new DoubleClickListener() {
+            @Override
+            protected boolean onDoubleClick(@NotNull MouseEvent event) {
+                executeAction(tree);
+                return false;
+            }
+        };
+        doubleClickListener.installOn(tree);
+
+        tree.addKeyListener(new KeyAdapter() {
+            @Override
+            public void keyPressed(KeyEvent e) {
+                if (e.getKeyCode() == KeyEvent.VK_ENTER) {
+                    executeAction(tree);
+                }
+            }
+        });
+
+        return tree;
+    }
+
+    private void load() {
+        var action = ReadAction.nonBlocking(() -> {
+            DefaultMutableTreeNode root = (DefaultMutableTreeNode) ((DefaultTreeModel) tree.getModel()).getRoot();
+            Module[] modules = ModuleManager.getInstance(project).getModules();
+            for (Module javaProject : modules) {
+                if (PsiQuarkusUtils.isQuarkusProject(javaProject)) {
+                    QuarkusProjectNode projectNode = new QuarkusProjectNode(javaProject);
+                    root.add(projectNode);
+                    // Fill Quarkus actions
+                    projectNode.add(new QuarkusActionNode("Start", javaProject));
+                }
+            }
+            ((DefaultTreeModel) tree.getModel()).reload(root);
+        });
+        var executeInSmartMode = DumbService.getInstance(project).isDumb();
+        if (executeInSmartMode) {
+            action = action.inSmartMode(project);
+        }
+        action
+                .submit(AppExecutorUtil.getAppExecutorService());
+    }
+
+    private static void executeAction(Tree tree) {
+        final TreePath path = tree.getSelectionPath();
+        Object node = path.getLastPathComponent();
+        if (node instanceof QuarkusActionNode) {
+            ActionManager am = ActionManager.getInstance();
+            String actionNodeName = ((QuarkusActionNode) node).getName();
+
+            String actionId = QuarkusDevStartAction.ACTION_ID;
+
+            AnAction action = am.getAction(actionId);
+            if (action != null) {
+                action.actionPerformed(new AnActionEvent(null,
+                        DataManager.getInstance().getDataContext(tree),
+                        ActionPlaces.UNKNOWN, new Presentation(),
+                        am, 0));
+            }
+
+        }
+    }
+
+    @Override
+    public void dispose() {
+
+    }
+}

src/main/java/com/redhat/devtools/intellij/quarkus/explorer/QuarkusProjectNode.java

@@ -0,0 +1,25 @@
+package com.redhat.devtools.intellij.quarkus.explorer;
+
+import com.intellij.openapi.module.Module;
+import com.redhat.devtools.intellij.quarkus.lang.QuarkusIcons;
+
+import javax.swing.*;
+import javax.swing.tree.DefaultMutableTreeNode;
+
+public class QuarkusProjectNode extends DefaultMutableTreeNode {
+
+    private final Module module;
+
+    public QuarkusProjectNode(Module module) {
+        this.module = module;
+    }
+
+    public String getDisplayName() {
+        return module.getName();
+    }
+
+    public Icon getIcon() {
+        return QuarkusIcons.Quarkus;
+    }
+
+}

src/main/java/com/redhat/devtools/intellij/quarkus/explorer/QuarkusToolWindowFactory.java

@@ -0,0 +1,24 @@
+package com.redhat.devtools.intellij.quarkus.explorer;
+
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.wm.ToolWindow;
+import com.intellij.openapi.wm.ToolWindowFactory;
+import com.intellij.ui.content.Content;
+import com.intellij.ui.content.ContentManager;
+import com.redhat.devtools.intellij.lsp4ij.LanguageServerBundle;
+import com.redhat.devtools.intellij.quarkus.QuarkusBundle;
+import org.jetbrains.annotations.NotNull;
+
+public class QuarkusToolWindowFactory implements ToolWindowFactory {
+
+    @Override
+    public void createToolWindowContent(@NotNull Project project, @NotNull ToolWindow toolWindow) {
+        QuarkusExplorer explorer = new QuarkusExplorer(project);
+        ContentManager contentManager = toolWindow.getContentManager();
+        Content content = contentManager.getFactory().createContent(explorer,
+                QuarkusBundle.message("quarkus.tool.window.display.name"), false);
+        content.setDisposer(explorer);
+        contentManager.addContent(content);
+
+    }
+}

src/main/java/com/redhat/devtools/intellij/quarkus/explorer/QuarkusTreeRenderer.java

@@ -0,0 +1,133 @@
+/*******************************************************************************
+ * Copyright (c) 2023 Red Hat Inc. and others.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
+ * which is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
+ *
+ * Contributors:
+ *     Red Hat Inc. - initial API and implementation
+ *******************************************************************************/
+package com.redhat.devtools.intellij.quarkus.explorer;
+
+import com.intellij.ide.ui.UISettings;
+import com.intellij.ui.ColoredTreeCellRenderer;
+import com.intellij.ui.RelativeFont;
+import com.intellij.ui.SimpleTextAttributes;
+import com.intellij.util.ui.UIUtil;
+import com.redhat.devtools.intellij.lsp4ij.ServerStatus;
+import com.redhat.devtools.intellij.lsp4ij.console.explorer.LanguageServerProcessTreeNode;
+import com.redhat.devtools.intellij.lsp4ij.console.explorer.LanguageServerTreeNode;
+import org.jetbrains.annotations.NonNls;
+import org.jetbrains.annotations.NotNull;
+
+import javax.swing.*;
+import java.awt.*;
+
+/**
+ * Quarkus tree nodes renderer.
+ * <p>
+ * Some piece of code has been copied/pasted from https://github.com/JetBrains/intellij-community/blob/master/platform/smRunner/src/com/intellij/execution/testframework/sm/runner/ui/TestTreeRenderer.java and adapted for Language Server case.
+ */
+public class QuarkusTreeRenderer extends ColoredTreeCellRenderer {
+
+    @NonNls
+    private static final String SPACE_STRING = " ";
+    private String myDurationText;
+    private Color myDurationColor;
+    private int myDurationWidth;
+    private int myDurationOffset;
+
+    @Override
+    public void customizeCellRenderer(@NotNull final JTree tree,
+                                      final Object value,
+                                      final boolean selected,
+                                      final boolean expanded,
+                                      final boolean leaf,
+                                      final int row,
+                                      final boolean hasFocus) {
+        myDurationText = null;
+        myDurationColor = null;
+        myDurationWidth = 0;
+        myDurationOffset = 0;
+
+        if (value instanceof QuarkusProjectNode) {
+            // Render of Quarkus project
+            QuarkusProjectNode projectNode = (QuarkusProjectNode) value;
+            setIcon(projectNode.getIcon());
+            append(projectNode.getDisplayName());
+            return;
+        }
+
+        if (value instanceof QuarkusActionNode) {
+            // Render of Quarkus action
+            QuarkusActionNode actionNode = (QuarkusActionNode) value;
+            setIcon(actionNode.getIcon());
+            append(actionNode.getDisplayName());
+            return;
+        }
+
+        /*if (value instanceof LanguageServerProcessTreeNode) {
+            // Render of language server process
+            LanguageServerProcessTreeNode languageProcessTreeNode = (LanguageServerProcessTreeNode) value;
+            setIcon(languageProcessTreeNode.getIcon());
+            append(languageProcessTreeNode.getDisplayName());
+
+            if (languageProcessTreeNode.getServerStatus() == ServerStatus.starting
+                    || languageProcessTreeNode.getServerStatus() == ServerStatus.stopping) {
+                // Display elapsed time when language server is starting/stopping
+                myDurationText = languageProcessTreeNode.getElapsedTime();
+                final var durationText = myDurationText;
+                if (durationText != null) {
+                    FontMetrics metrics = getFontMetrics(RelativeFont.SMALL.derive(getFont()));
+                    myDurationWidth = metrics.stringWidth(durationText);
+                    myDurationOffset = metrics.getHeight() / 2; // an empty area before and after the text
+                    myDurationColor = selected ? UIUtil.getTreeSelectionForeground(hasFocus) : SimpleTextAttributes.GRAYED_ATTRIBUTES.getFgColor();
+                }
+            }
+            return;
+        }*/
+        //strange node
+        final String text = value.toString();
+        //no icon
+        append(text != null ? text : SPACE_STRING, SimpleTextAttributes.GRAYED_ATTRIBUTES);
+    }
+
+    @NotNull
+    @Override
+    public Dimension getPreferredSize() {
+        final Dimension preferredSize = super.getPreferredSize();
+        if (myDurationWidth > 0) preferredSize.width += myDurationWidth + myDurationOffset;
+        return preferredSize;
+    }
+
+    @Override
+    protected void paintComponent(Graphics g) {
+        UISettings.setupAntialiasing(g);
+        Shape clip = null;
+        int width = getWidth();
+        int height = getHeight();
+        if (isOpaque()) {
+            // paint background for expanded row
+            g.setColor(getBackground());
+            g.fillRect(0, 0, width, height);
+        }
+        if (myDurationWidth > 0) {
+            width -= myDurationWidth + myDurationOffset;
+            if (width > 0 && height > 0) {
+                g.setColor(myDurationColor);
+                g.setFont(RelativeFont.SMALL.derive(getFont()));
+                g.drawString(myDurationText, width + myDurationOffset / 2, getTextBaseLine(g.getFontMetrics(), height));
+                clip = g.getClip();
+                g.clipRect(0, 0, width, height);
+            }
+        }
+        super.paintComponent(g);
+        // restore clip area if needed
+        if (clip != null) g.setClip(clip);
+    }
+}
+