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java - 仅从工作区选择文件的 SWT 组件

转载 作者:塔克拉玛干 更新时间:2023-11-01 21:57:46 24 4
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我使用 SWT 和 Eclipse 的插件。我只需要从工作区中选择文件。我创建了用于在工作空间中选择目录的组件,用于在文件系统中选择文件的组件,但是我还没有找到用于从工作空间中选择文件的组件。

现在我正在使用 org.eclipse.swt.widgets.FileDialog 并设置过滤器 setFilterPath(Platform.getLocation().toOSString())。但是用户可以选择不来自工作区的其他文件。他们应该只能在工作区内设置文件。

最佳答案

谢谢解答。我创建自己的组件并使用它。我还为选择文件添加了过滤器。

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;
}
}

然后调用:

ResourceFileSelectionDialog dialog = new ResourceFileSelectionDialog("Title", "Message", new String[] { "properties" });
dialog.open();

expample1

example2

关于java - 仅从工作区选择文件的 SWT 组件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14750712/

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