[英]Eclipse Plugin: how to get the path to the currently selected project
I am writing an Eclipse plugin that will display a menu item in the context menu for a Java Project. 我正在编写一个Eclipse插件,它将在Java项目的上下文菜单中显示一个菜单项。 I have written the plugin.xml as follows:
我编写了plugin.xml,如下所示:
<plugin>
<extension
point="org.eclipse.ui.menus">
<menuContribution
locationURI="popup:org.eclipse.jdt.ui.PackageExplorer">
<dynamic
class="uk.co.dajohnston.plugin.classpathswitcher.menu.MenuContribution"
id="uk.co.dajohnston.plugin.classpathSwitcher.switchMenuContribution">
<visibleWhen>
<with
variable="activeMenuSelection">
<iterate>
<adapt
type="org.eclipse.jdt.core.IJavaProject">
</adapt>
</iterate>
<count
value="1">
</count>
</with>
</visibleWhen>
</dynamic>
</menuContribution>
</extension>
</plugin>
So I am now trying to write the MenuContribution
class which extends CompoundContributionItem
so that I can create a dynamic menu and the contents of this menu are going to be based on a set of files that exist in the Java Project's root directory. 所以我现在正在尝试编写扩展
CompoundContributionItem
的MenuContribution
类,以便我可以创建一个动态菜单,该菜单的内容将基于Java Project根目录中存在的一组文件。 But I am stuck trying to get the path to the root directory from within the getContributionItems
method. 但是我试图从
getContributionItems
方法中获取到根目录的路径。
Based on the plugin.xml file I can be guarenteed that the method will only be called if a single Java Project is selected, so all I need to do is get the current selection and then get its absolute path. 基于plugin.xml文件,我可以保证仅在选择单个Java项目时才调用该方法,因此我需要做的就是获取当前选择,然后获取其绝对路径。 Any ideas?
有任何想法吗? Or is there a better way to do this?
或者有更好的方法吗?
This should get you closer (if not solve it completely for you ;)) 这应该让你更接近(如果没有完全为你解决;))
IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
if (window != null)
{
IStructuredSelection selection = (IStructuredSelection) window.getSelectionService().getSelection();
Object firstElement = selection.getFirstElement();
if (firstElement instanceof IAdaptable)
{
IProject project = (IProject)((IAdaptable)firstElement).getAdapter(IProject.class);
IPath path = project.getFullPath();
System.out.println(path);
}
}
Since I wrote the previous answer I have written another couple of utility plugins and now have a generic starter for Eclipse Navigator Popups. 自从我写完之前的答案以来,我已经编写了另外两个实用程序插件,现在有了Eclipse Navigator Popups的通用启动器。 The files are as follows:
文件如下:
MANIFEST.MF MANIFEST.MF
Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: NavigatorPopup
Bundle-SymbolicName: com.nsd.NavigatorPopup;singleton:=true
Bundle-Version: 1.0.0.1
Bundle-Vendor: NSD
Require-Bundle: org.eclipse.ui,
org.eclipse.core.resources,
org.eclipse.core.runtime
Bundle-RequiredExecutionEnvironment: JavaSE-1.6
build.properties build.properties
source.. = src/
output.. = bin/
bin.includes = plugin.xml,\
META-INF/,\
.
In particular note how <command commandId=...> of the <menuContribution...> <menu..> in the <extension point="org.eclipse.ui.menus"> extension point links to the <handler commandId=...> in the <extension point="org.eclipse.ui.handlers"> extension point this permits us to link multiple menu contributions to a single handler. 特别注意<extension point =“org.eclipse.ui.menus”>扩展点中<menucontribution ...> <menu ..>的 <command commandId = ...>链接到<handler commandId = ...>在<extension point =“org.eclipse.ui.handlers”>扩展点中,这允许我们将多个菜单贡献链接到单个处理程序。
Also of note is the fact that there are multiple locationURI 's as these can change from one perspective to another. 另外值得注意的是,有多个locationURI ,因为它们可以从一个角度改变到另一个角度。
plugin.xml plugin.xml中
<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
<extension point="org.eclipse.ui.commands">
<category name="NSD Category" id="com.nsd.NavigatorPopup.commands.category"/>
<command name="Navigator Popup" categoryId="com.nsd.NavigatorPopup.commands.category" id="com.nsd.NavigatorPopup.commands.navigatorPopupCommand"/>
</extension>
<extension point="org.eclipse.ui.handlers">
<handler commandId="com.nsd.NavigatorPopup.commands.navigatorPopupCommand" class="com.nsd.navigatorpopup.NavigatorPopupHandler"/>
</extension>
<extension point="org.eclipse.ui.menus">
<menuContribution locationURI="popup:org.eclipse.jdt.ui.PackageExplorer?after=additions">
<menu label="Popup Utilities">
<command commandId="com.nsd.NavigatorPopup.commands.navigatorPopupCommand" id="com.nsd.NavigatorPopup.menus.navigatorPopupCommand"/>
</menu>
</menuContribution>
<menuContribution locationURI="popup:org.eclipse.ui.navigator.ProjectExplorer#PopupMenu?after=additions">
<menu label="Popup Utilities">
<command commandId="com.nsd.NavigatorPopup.commands.navigatorPopupCommand" id="com.nsd.NavigatorPopup.menus.navigatorPopupCommand"/>
</menu>
</menuContribution>
</extension>
</plugin>
To find out more about the plugin for the current selection click on a file and use ALT-SHIFT-F1 for the Plug-in Selection Spy 要了解有关当前选择的插件的更多信息,请单击文件并使用ALT-SHIFT-F1作为插件选择间谍
Use ALT-SHIFT-F2 for the Plug-in Menu Spy. 使用ALT-SHIFT-F2作为插件菜单间谍。 Note press the ALT-SHIFT-F2 combination before right clicking and selecting the popup menu item of interest.
注意在右键单击并选择感兴趣的弹出菜单项之前按ALT-SHIFT-F2组合。
Finally the code for the plug-in. 最后是插件的代码。
NavigatorPopupHandler.java NavigatorPopupHandler.java
package com.nsd.navigatorpopup;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ITreeSelection;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.jface.viewers.TreeSelection;
// ====================================================================================================================
// This handler will obtain the core information about a file from a navigator popup menu
// ====================================================================================================================
public class NavigatorPopupHandler extends AbstractHandler {
private IWorkbenchWindow window;
private IWorkbenchPage activePage;
private IProject theProject;
private IResource theResource;
private IFile theFile;
private String workspaceName;
private String projectName;
private String fileName;
public NavigatorPopupHandler() {
// Empty constructor
}
public Object execute(ExecutionEvent event) throws ExecutionException {
// Get the project and file name from the initiating event if at all possible
if(!extractProjectAndFileFromInitiatingEvent(event)) {
return null;
}
// CODE THAT USES THE FILE GOES HERE
MessageDialog.openInformation(this.window.getShell(), "NavigatorPopup", String.format("File Details.\n\nWorkspace=%s\nProject=%s\nFile=%s", workspaceName, projectName, fileName));
return null;
}
private boolean extractProjectAndFileFromInitiatingEvent(ExecutionEvent event) {
// ============================================================================================================
// The execute method of the handler is invoked to handle the event. As we only contribute to Explorer
// Navigator views we expect to get a selection tree event
// ============================================================================================================
this.window = HandlerUtil.getActiveWorkbenchWindow(event);
// Get the active WorkbenchPage
this.activePage = this.window.getActivePage();
// Get the Selection from the active WorkbenchPage page
ISelection selection = this.activePage.getSelection();
if(selection instanceof ITreeSelection) {
TreeSelection treeSelection = (TreeSelection) selection;
TreePath[] treePaths = treeSelection.getPaths();
TreePath treePath = treePaths[0];
// The TreePath contains a series of segments in our usage:
// o The first segment is usually a project
// o The last segment generally refers to the file
// The first segment should be a IProject
Object firstSegmentObj = treePath.getFirstSegment();
this.theProject = (IProject) ((IAdaptable) firstSegmentObj).getAdapter(IProject.class);
if(this.theProject == null) {
MessageDialog.openError(this.window.getShell(), "Navigator Popup", getClassHierarchyAsMsg(
"Expected the first segment to be IAdapatable to an IProject.\nBut got the following class hierarchy instead.", "Make sure to directly select a file.",
firstSegmentObj));
return false;
}
// The last segment should be an IResource
Object lastSegmentObj = treePath.getLastSegment();
this.theResource = (IResource) ((IAdaptable) lastSegmentObj).getAdapter(IResource.class);
if(this.theResource == null) {
MessageDialog.openError(this.window.getShell(), "Navigator Popup", getClassHierarchyAsMsg(
"Expected the last segment to be IAdapatable to an IResource.\nBut got the following class hierarchy instead.", "Make sure to directly select a file.",
firstSegmentObj));
return false;
}
// As the last segment is an IResource we should be able to get an IFile reference from it
this.theFile = (IFile) ((IAdaptable) lastSegmentObj).getAdapter(IFile.class);
// Extract additional information from the IResource and IProject
this.workspaceName = this.theResource.getWorkspace().getRoot().getLocation().toOSString();
this.projectName = this.theProject.getName();
this.fileName = this.theResource.getName();
return true;
} else {
String selectionClass = selection.getClass().getSimpleName();
MessageDialog.openError(this.window.getShell(), "Unexpected Selection Class", String.format("Expected a TreeSelection but got a %s instead.\nProcessing Terminated.", selectionClass));
}
return false;
}
@SuppressWarnings("rawtypes")
private static String getClassHierarchyAsMsg(String msgHeader, String msgTrailer, Object theObj) {
String msg = msgHeader + "\n\n";
Class theClass = theObj.getClass();
while(theClass != null) {
msg = msg + String.format("Class=%s\n", theClass.getName());
Class[] interfaces = theClass.getInterfaces();
for(Class theInterface : interfaces) {
msg = msg + String.format(" Interface=%s\n", theInterface.getName());
}
theClass = theClass.getSuperclass();
}
msg = msg + "\n" + msgTrailer;
return msg;
}
}
And the result of running the plug-in on its own java file. 以及在自己的java文件上运行插件的结果。
Had a very long day working my way through the answers here and a whole lot of other answers and found the bit that finally got me there was to do a Java Reflection loop to study the Class and Interface structure of the selection from the Tree in the navigator. 有一个漫长的一天在这里通过答案和许多其他答案,并发现最终让我在那里的位是做一个Java反射循环来研究从树中的选择的类和接口结构航海家。 The Class introspection loop is in its final resting place but was originally much closer to the top of the execute method.
Class内省循环处于最终的休息位置,但最初更接近execute方法的顶部。
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITreeSelection;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.jface.viewers.TreeSelection;
public class MyHandler extends AbstractHandler {
/**
* The constructor.
*/
public MyHandler() {
}
public Object execute(ExecutionEvent event) throws ExecutionException {
IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindow(event);
IWorkbenchPage activePage = window.getActivePage();
ISelection selection = activePage.getSelection();
if (selection != null) {
System.out.println("Got selection");
if (selection instanceof IStructuredSelection) {
System.out.println("Got a structured selection");
if (selection instanceof ITreeSelection) {
TreeSelection treeSelection = (TreeSelection) selection;
TreePath[] treePaths = treeSelection.getPaths();
TreePath treePath = treePaths[0];
System.out.println("Last");
Object lastSegmentObj = treePath.getLastSegment();
Class currClass = lastSegmentObj.getClass();
while(currClass != null) {
System.out.println(" Class=" + currClass.getName());
Class[] interfaces = currClass.getInterfaces();
for(Class interfacey : interfaces) {
System.out.println(" I=" + interfacey.getName());
}
currClass = currClass.getSuperclass();
}
if(lastSegmentObj instanceof IAdaptable) {
IFile file = (IFile) ((IAdaptable) lastSegmentObj).getAdapter(IFile.class);
if(file != null) {
System.out.println("File=" + file.getName());
String path = file.getRawLocation().toOSString();
System.out.println("path: " + path);
}
}
}
}
}
return null;
}
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.