SWT组件仅从工作区选择文件 [英] SWT Component for choose file only from workspace
问题描述
我使用SWT和Eclipse的插件。我只需要从工作区选择文件。我在工作区中创建了选择目录的组件,在文件系统中选择文件的组件,但是我没有找到从工作区中选择文件的组件。
I work with SWT and Eclipse's plugin. I need choose file only from workspace. I founded component for choose directory in workspace, component for choose file in file system, but i have not found component for choose file from workspace.
现在我正在使用 org.eclipse.swt.widgets.FileDialog
并设置过滤器 setFilterPath(Platform.getLocation()。toOSString())
。但是用户可以从工作区中选择其他文件。他们应该只能从工作区内设置文件。
Now I'm using org.eclipse.swt.widgets.FileDialog
and set filter setFilterPath(Platform.getLocation().toOSString())
. But the user can choose other file not from workspace. They should only be able to set files from within the workspace.
推荐答案
感谢您的答案。我创建自己的组件并使用它。另外我添加了选择文件的过滤器。
Thank for answers. I create own component and use it. Also i add filter for choose files.
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
import org.eclipse.ui.dialogs.ISelectionStatusValidator;
import org.eclipse.ui.model.WorkbenchLabelProvider;
/**
* @author Alexey Prybytkouski
*/
public class ResourceFileSelectionDialog extends ElementTreeSelectionDialog {
private String[] extensions;
private static ITreeContentProvider contentProvider = new ITreeContentProvider() {
public Object[] getChildren(Object element) {
if (element instanceof IContainer) {
try {
return ((IContainer) element).members();
}
catch (CoreException e) {
}
}
return null;
}
public Object getParent(Object element) {
return ((IResource) element).getParent();
}
public boolean hasChildren(Object element) {
return element instanceof IContainer;
}
public Object[] getElements(Object input) {
return (Object[]) input;
}
public void dispose() {
}
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
}
};
private static final IStatus OK = new Status(IStatus.OK, PLUGIN_ID, 0, "", null);
private static final IStatus ERROR = new Status(IStatus.ERROR, PLUGIN_ID, 0, "", null);
/*
* Validator
*/
private ISelectionStatusValidator validator = new ISelectionStatusValidator() {
public IStatus validate(Object[] selection) {
return selection.length == 1 && selection[0] instanceof IFile
&& checkExtension(((IFile) selection[0]).getFileExtension()) ? OK : ERROR;
}
};
public ResourceFileSelectionDialog(String title, String message, String[] type) {
this(Display.getDefault().getActiveShell(), WorkbenchLabelProvider.getDecoratingWorkbenchLabelProvider(),
contentProvider);
this.extensions = type;
setTitle(title);
setMessage(message);
setInput(computeInput());
setValidator(validator);
}
public ResourceFileSelectionDialog(Shell parent, ILabelProvider labelProvider, ITreeContentProvider contentProvider) {
super(parent, labelProvider, contentProvider);
}
/*
* Show projects
*/
private Object[] computeInput() {
/*
* Refresh projects tree.
*/
IProject[] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects();
for (int i = 0; i < projects.length; i++) {
try {
projects[i].refreshLocal(IResource.DEPTH_INFINITE, null);
} catch (CoreException e) {
e.printStackTrace();
}
}
try {
ResourcesPlugin.getWorkspace().getRoot().refreshLocal(IResource.DEPTH_ONE, null);
} catch (CoreException e) {
}
List<IProject> openProjects = new ArrayList<IProject>(projects.length);
for (int i = 0; i < projects.length; i++) {
if (projects[i].isOpen()) {
openProjects.add(projects[i]);
}
}
return openProjects.toArray();
}
/*
* Check file extension
*/
private boolean checkExtension(String name) {
if (name.equals("*")) {
return true;
}
for (int i = 0; i < extensions.length; i++) {
if (extensions[i].equals(name)) {
return true;
}
}
return false;
}
}
并调用:
ResourceFileSelectionDialog dialog = new ResourceFileSelectionDialog("Title", "Message", new String[] { "properties" });
dialog.open();
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