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/*
* 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;
}
}
}
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