1 files changed, 140 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.pdt/src/com/android/ide/eclipse/pdt/internal/DevTreeProjectProvider.java b/eclipse/plugins/com.android.ide.eclipse.pdt/src/com/android/ide/eclipse/pdt/internal/DevTreeProjectProvider.java
new file mode 100644
index 000000000..b44d2cb49
--- /dev/null
+++ b/eclipse/plugins/com.android.ide.eclipse.pdt/src/com/android/ide/eclipse/pdt/internal/DevTreeProjectProvider.java
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.ide.eclipse.pdt.internal;
+
+import com.android.ide.eclipse.pdt.PdtPlugin;
+
+import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.IWorkspace;
+import org.eclipse.core.resources.ResourcesPlugin;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IPath;
+import org.eclipse.core.runtime.Path;
+import org.eclipse.jdt.core.JavaCore;
+import org.eclipse.jface.viewers.IStructuredContentProvider;
+import org.eclipse.jface.viewers.LabelProvider;
+import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.jface.window.Window;
+import org.eclipse.ui.IWorkbenchWindow;
+import org.eclipse.ui.PlatformUI;
+import org.eclipse.ui.dialogs.ListDialog;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Base class providing a {@link #getProject()} method to find the project matching the dev tree.
+ *
+ */
+class DevTreeProjectProvider {
+    protected IProject getProject() {
+        // Get the list of project for the current workspace
+        IWorkspace workspace = ResourcesPlugin.getWorkspace();
+        List<IProject> projects = Arrays.asList(workspace.getRoot().getProjects());
+        if (projects.size() == 0) {
+            return null;
+        }
+
+        // get the location of the Dev tree
+        String devTree = PdtPlugin.getDevTree();
+        IPath devTreePath = null;
+        if (devTree != null) {
+            devTreePath = new Path(devTree);
+        }
+
+        // filter the list of projects in workspace by 2 conditions:
+        //        1. Only look at Java projects
+        //        2. If dev tree location is set, only look at projects within the dev tree
+
+        List<IProject> devTreeProjects = new ArrayList<IProject>(projects.size());
+
+        for (IProject p: projects) {
+            if (!p.isOpen()) {
+                continue;
+            }
+
+            if (!hasJavaNature(p)) {
+                continue;
+            }
+
+            if (devTreePath == null || devTreePath.isPrefixOf(p.getLocation())) {
+                devTreeProjects.add(p);
+            }
+        }
+
+        return selectProject(devTreeProjects);
+    }
+
+    private IProject selectProject(List<IProject> devTreeProjects) {
+        if (devTreeProjects.size() == 0) {
+            return null;
+        }
+
+        if (devTreeProjects.size() == 1) {
+            return devTreeProjects.get(0);
+        }
+
+        // if there are multiple choices, prompt the user
+        IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
+        if (window == null) {
+            return null;
+        }
+
+        ListDialog dlg = new ListDialog(window.getShell());
+        dlg.setMessage("Select Project");
+        dlg.setInput(devTreeProjects);
+        dlg.setContentProvider(new IStructuredContentProvider() {
+            @Override
+            public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
+            }
+
+            @Override
+            public void dispose() {
+            }
+
+            @Override
+            public Object[] getElements(Object inputElement) {
+                return ((List<?>) inputElement).toArray();
+            }
+        });
+        dlg.setLabelProvider(new LabelProvider() {
+            @Override
+            public String getText(Object element) {
+                return ((IProject) element).getName();
+            }
+        });
+        dlg.setHelpAvailable(false);
+
+        if (dlg.open() == Window.OK) {
+            Object[] selectedMatches = dlg.getResult();
+            if (selectedMatches.length > 0) {
+                return (IProject) selectedMatches[0];
+            }
+        }
+
+        return null;
+    }
+
+    private boolean hasJavaNature(IProject p) {
+        try {
+            return p.hasNature(JavaCore.NATURE_ID);
+        } catch (CoreException e) {
+            return false;
+        }
+    }
+}