怎么获取Eclipse里view的id

如何获取Eclipse里view的id

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。

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