将参数传递给视图 [英] Passing parameters to the view

问题描述

在我的RCP应用程序中，我有一个视图，一个 TreeViewer 在左侧导航，一个文件夹，我的视图在右侧。透视图如下所示：

  public void createInitialLayout（IPageLayout layout）{
 layout.setEditorAreaVisible（false）; 
 layout.setFixed（false）; 
 
 layout.addStandaloneView（NavigationView.ID，false，IPageLayout.LEFT，0.7f，layout.getEditorArea（））; 
 
 right = layout.createFolder（right，IPageLayout.RIGHT，0.3f，com.my.app.views.browser.navigation）; 
 
 
 layout.getViewLayout（WallpaperView.Id）.setCloseable（false）; //虚拟视图保持文件夹关闭
 layout.getViewLayout（WallpaperView.Id）.setMoveable （假）; 
 
 right.addView（WallpaperView.Id）; 
 //为潜在的视图添加一些占位符
 right.addPlaceholder（DefaultAdminView.ID +：*）; 
 
} 
  

我想打开不同的视图，基于什么用户在导航树中选择。认为这不会很难。我的导航树视图：

  tree = new TreeViewer（composite）; 
 tree.setContentProvider（new BrowserNavigationTreeContentProvider（））; 
 tree.setLabelProvider（new BrowserNavigationTreeLabelProvider（））; 
 tree.setInput（UserProfileAdvisor.getProject（））; 
 
 //注册用于doubleclick事件的Mouselistener 
 tree.addDoubleClickListener（new IDoubleClickListener（）{
 
 @Override 
 public void doubleClick（DoubleClickEvent event）{ 
 TreeSelection ts =（TreeSelection）event.getSelection（）; 
对象selectedItem = ts.getFirstElement（）; 
 String viewId = DefaultAdminView.ID; 
 
 //设置viewId取决于selectedItem.class 
 try {
 PlatformUI.getWorkbench（）。getActiveWorkbenchWindow（）。getActivePage（）。showView（viewId，String.valueOf（++ viewCounter），IWorkbenchPage.VIEW_ACTIVATE）; 
 
} catch（PartInitException e）{
 ILogHelper.error（所选对象的视图无法打开，e）; 
} 
} 
 
}）; 
  

这似乎工作正常。只有一个微小的问题：
我需要将对象（让我们说为selectedItem）传递给我的视图，以便让用户与其内容交互。我如何做？

我看到一些例子，我的一些同事写了一个自己的View，他们放在右边。然后他们添加了一个 CTabFolder ，实例化了视图，并手动添加了它们。有一个更聪明的解决方案吗？

解决方案

创建一个新的界面，给它一个方法，如 accept（Object参数）并使您的视图实现。

然后，当您执行 PlatformUI.getWorkbench（）。getActiveWorkbenchWindow ）.getActivePage（）。showView（viewId，String.valueOf（++ viewCounter），IWorkbenchPage.VIEW_ACTIVATE）方法 showView 返回一个 IViewPart 。将此回复转发到您的界面，并调用接受方法。

In my RCP application, I have a View with a TreeViewer for Navigation on the left side and a Folder for my views on the right side. The Perspective looks like this:

public void createInitialLayout(IPageLayout layout) {
    layout.setEditorAreaVisible(false);
    layout.setFixed(false);

    layout.addStandaloneView(NavigationView.ID, false, IPageLayout.LEFT, 0.7f, layout.getEditorArea());

    right = layout.createFolder("right", IPageLayout.RIGHT, 0.3f, "com.my.app.views.browser.navigation");


    layout.getViewLayout(WallpaperView.Id).setCloseable(false);//dummy view to keep the folder from closing
    layout.getViewLayout(WallpaperView.Id).setMoveable(false);      

    right.addView(WallpaperView.Id);        
    //add some placeholders for the potential views
    right.addPlaceholder(DefaultAdminView.ID+":*");

}

I would like to open different views, based on what the user selects in the navigation tree. Figured that wouldn't be to hard. My Navigation Tree view:

tree = new TreeViewer(composite);
tree.setContentProvider(new BrowserNavigationTreeContentProvider());
tree.setLabelProvider(new BrowserNavigationTreeLabelProvider());
tree.setInput(UserProfileAdvisor.getProject());     

//register Mouselistener for doubleclick events
tree.addDoubleClickListener(new IDoubleClickListener(){

    @Override
    public void doubleClick(DoubleClickEvent event) {
        TreeSelection ts = (TreeSelection) event.getSelection();
        Object selectedItem = ts.getFirstElement();
        String viewId = DefaultAdminView.ID;                

         //set viewId depending on the selectedItem.class
        try {
            PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().showView(viewId, String.valueOf(++viewCounter), IWorkbenchPage.VIEW_ACTIVATE);

        } catch (PartInitException e) {
            ILogHelper.error("The view for the selected object could not be opened", e);
        }
    }

});

This seems to work fine. There's just one tiny problem: I need to pass the object (let's say the selectedItem) to my view somehow, in order to let the user interact with its content. How do I do that?

I've seen some examples where some of my colleagues wrote an own View which they placed on the right side. Then they added a CTabFolder, instantiated the views and added them manually. Is there a smarter solution?

解决方案

Create a new interface, giving it a method like accept( Object parameter ) and make your views implement it.

Then, when you do PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().showView(viewId, String.valueOf(++viewCounter), IWorkbenchPage.VIEW_ACTIVATE) the method showView returns an IViewPart. Cast this return to your interface and call the accept method.

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