Posted on 2008-01-08 10:27
Raul Gong 阅读(1886)
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eclipse
在制作eclipse插件的时候,时常需要对已经存在的视图做一些扩展,例如在project explorer中增加一个右键菜单,或者需要获取outline中当前选中项,等等。而这些操作的前提,是获取这些视图的id,然后通过获取视图的语句获取到视图,并进行下一步操作。
例如:如果是在view中:
IViewPart part = getViewSite().getPage().findView("org.eclipse.ui.views.ContentOutline");
如果是在action中:
IViewPart part = Plugin.getDefault().getWorkbench().getActiveWorkbenchWindow().getActivePage().findView("org.eclipse.ui.views.ContentOutline");
可见获取到视图的id是很重要的。如何获取id呢,有很多方法,我觉得比较常用的是以下两种:
1.通过手动查找目标视图所在的插件的plugin.xml中对改视图的定义,获得视图id。
描述:我觉得这是最保险的办法,因为所有的视图都必定有一个plugin.xml定义,但是找到这个plugin.xml还是需要一些操作,可能会耗费一些时间。
步骤:
a.点击“工具栏”->“Search”->“Search”,或者热键“ctrl+h”。选“ Plugin Search”。
b.Search for 选"Extention Point",Limit to 选“References”,External Scope 选“Enabled Plug-ins only”。
c.下面的scope选“Worksapaces”。
d.上面的Search String框填入我们要搜索的插件的扩展点的名字,这里我们要找视图插件,所以填入:org.eclipse.ui.views
e.点击search以后,在底部Search视图内列出很多搜索结果,任意选中一个,双击,可以看到editor内打开了该plugin.xml,选中编辑器底部的Extentions,用图形化的方式来查看会更快捷。
f.可以看到该插件使用的扩展点已经以列表的形式列出,我们查找的org.eclipse.ui.views扩展点也已经选中,展开选中的扩展点,可以看到它实现了哪些view,点击某一个,可以在页面右边看到该视图的详细信息,第一项即是视图的id。
我们无法知道目标视图在搜索结果中的哪个plugin中,所以可能会耗费一些时间,建议在查看搜索结果时,通过对视图的分类分析,确定一个大概范围再进行查看。
同时,用这种方法也可以查找其他扩展点的实现插件。
2.通过代码直接读出该视图的id。
描述:通过这种方法,可以直接用鼠标点击某个你想知道的视图,控制台会打印出该视图的id和所属插件的id。
步骤:
a.通过插件向导新建一个插件,并使用Available Templates中的Plugin with a view模板,点finish。
b.对自动创建的SampleView代码进行修改,修改结果如下。其中主要步骤有三个:实现IPartListener2接口,编写isActivePart()方法,调用isActivePart()方法。
package com.raul.learn.sampleview.views;


import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.part.*;
import org.eclipse.jface.viewers.*;
import org.eclipse.swt.graphics.Image;
import org.eclipse.jface.action.*;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.ui.*;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.SWT;

import com.raul.learn.sampleview.Activator;



/** *//**
* This sample class demonstrates how to plug-in a new
* workbench view. The view shows data obtained from the
* model. The sample creates a dummy model on the fly,
* but a real implementation would connect to the model
* available either in this or another plug-in (e.g. the workspace).
* The view is connected to the model using a content provider.
* <p>
* The view uses a label provider to define how model
* objects should be presented in the view. Each
* view can present the same model objects using
* different labels and icons, if needed. Alternatively,
* a single label provider can be shared between views
* in order to ensure that objects of the same type are
* presented in the same way everywhere.
* <p>
*/


public class SampleView extends ViewPart implements IPartListener2
{
private TableViewer viewer;
private Action action1;
private Action action2;
private Action doubleClickAction;


/**//*
* The content provider class is responsible for
* providing objects to the view. It can wrap
* existing objects in adapters or simply return
* objects as-is. These objects may be sensitive
* to the current input of the view, or ignore
* it and always show the same content
* (like Task List, for example).
*/

class ViewContentProvider implements IStructuredContentProvider
{

public void inputChanged(Viewer v, Object oldInput, Object newInput)
{
}

public void dispose()
{
}

public Object[] getElements(Object parent)
{

return new String[]
{ "One", "Two", "Three" };
}
}

class ViewLabelProvider extends LabelProvider implements ITableLabelProvider
{

public String getColumnText(Object obj, int index)
{
return getText(obj);
}

public Image getColumnImage(Object obj, int index)
{
return getImage(obj);
}

public Image getImage(Object obj)
{
return PlatformUI.getWorkbench().
getSharedImages().getImage(ISharedImages.IMG_OBJ_ELEMENT);
}
}

class NameSorter extends ViewerSorter
{
}


/** *//**
* The constructor.
*/

public SampleView()
{
Activator.getDefault().getWorkbench().getActiveWorkbenchWindow()
.getActivePage().addPartListener(this);

}

@Override

public void dispose()
{
// TODO Auto-generated method stub
Activator.getDefault().getWorkbench().getActiveWorkbenchWindow()
.getActivePage().removePartListener(this);
super.dispose();
}

/** *//**
* This is a callback that will allow us
* to create the viewer and initialize it.
*/

public void createPartControl(Composite parent)
{
viewer = new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
viewer.setContentProvider(new ViewContentProvider());
viewer.setLabelProvider(new ViewLabelProvider());
viewer.setSorter(new NameSorter());
viewer.setInput(getViewSite());
makeActions();
hookContextMenu();
hookDoubleClickAction();
contributeToActionBars();
}


private void hookContextMenu()
{
MenuManager menuMgr = new MenuManager("#PopupMenu");
menuMgr.setRemoveAllWhenShown(true);

menuMgr.addMenuListener(new IMenuListener()
{

public void menuAboutToShow(IMenuManager manager)
{
SampleView.this.fillContextMenu(manager);
}
});
Menu menu = menuMgr.createContextMenu(viewer.getControl());
viewer.getControl().setMenu(menu);
getSite().registerContextMenu(menuMgr, viewer);
}


private void contributeToActionBars()
{
IActionBars bars = getViewSite().getActionBars();
fillLocalPullDown(bars.getMenuManager());
fillLocalToolBar(bars.getToolBarManager());
}


private void fillLocalPullDown(IMenuManager manager)
{
manager.add(action1);
manager.add(new Separator());
manager.add(action2);
}


private void fillContextMenu(IMenuManager manager)
{
manager.add(action1);
manager.add(action2);
// Other plug-ins can contribute there actions here
manager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
}

private void fillLocalToolBar(IToolBarManager manager)
{
manager.add(action1);
manager.add(action2);
}


private void makeActions()
{

action1 = new Action()
{

public void run()
{
showMessage("Action 1 executed");
}
};
action1.setText("Action 1");
action1.setToolTipText("Action 1 tooltip");
action1.setImageDescriptor(PlatformUI.getWorkbench().getSharedImages().
getImageDescriptor(ISharedImages.IMG_OBJS_INFO_TSK));

action2 = new Action()
{

public void run()
{
showMessage("Action 2 executed");
}
};
action2.setText("Action 2");
action2.setToolTipText("Action 2 tooltip");
action2.setImageDescriptor(PlatformUI.getWorkbench().getSharedImages().
getImageDescriptor(ISharedImages.IMG_OBJS_INFO_TSK));

doubleClickAction = new Action()
{

public void run()
{
ISelection selection = viewer.getSelection();
Object obj = ((IStructuredSelection)selection).getFirstElement();
showMessage("Double-click detected on "+obj.toString());
}
};
}


private void hookDoubleClickAction()
{

viewer.addDoubleClickListener(new IDoubleClickListener()
{

public void doubleClick(DoubleClickEvent event)
{
doubleClickAction.run();
}
});
}

private void showMessage(String message)
{
MessageDialog.openInformation(
viewer.getControl().getShell(),
"Sample View",
message);
}


/** *//**
* Passing the focus request to the viewer's control.
*/

public void setFocus()
{
viewer.getControl().setFocus();
}

@Override

public void partActivated(IWorkbenchPartReference partRef)
{
// TODO Auto-generated method stub
isActivePart();
}

@Override

public void partBroughtToTop(IWorkbenchPartReference partRef)
{
// TODO Auto-generated method stub
}

@Override

public void partClosed(IWorkbenchPartReference partRef)
{
// TODO Auto-generated method stub
}

@Override

public void partDeactivated(IWorkbenchPartReference partRef)
{
// TODO Auto-generated method stub
}

@Override

public void partHidden(IWorkbenchPartReference partRef)
{
// TODO Auto-generated method stub
}

@Override

public void partInputChanged(IWorkbenchPartReference partRef)
{
// TODO Auto-generated method stub
}

@Override

public void partOpened(IWorkbenchPartReference partRef)
{
// TODO Auto-generated method stub
}

@Override

public void partVisible(IWorkbenchPartReference partRef)
{
// TODO Auto-generated method stub
}

private void isActivePart()
{
IWorkbenchPart part = getViewSite().getPage().getActivePart();
//return part != null && part.equals(this);
System.out.println(part.getSite().getId());
part.getSite().getPluginId();
}
}
然后调插件,在运行环境中调出该视图,接着当你用鼠标点击你想知道的视图时,在开发环境中的控制台,就会打印出该视图的id以及所属插件的id。