This should be quite a common problem, but I couldn't find anything helpful on the topic.
We are developing an application with Eclipse RCP. The application shows data in an editor of which usually multiple instances are open. In an additional view you can edit the editor-values. When the values are changed in the view they are updated in the editor and it's dirty flag is set.
So far it works fine. What we're missing is: When another editor instance gets the focus, our view should show the data of this editor.
I managed to do that for two views. The second view is sucessfully updated using a TableViewer as selection Provider and registering a SelectionListener in the other view. I tried the same thing for the editor using a Viewer I subclassed from ContentViewer, but it didn't work.
Can this approach be working?
Or do I need a different approach on the problem?
May be you can subclass your view from PageBookView and then provide special adapter for your editor. Outline View is implemented using this approach.
Thank you cerealk, that was exactly what I needed. :-)
Update the View when another Editor is selected
public class myView {
// Create an IPartListener2
IPartListener2 pl = new IPartListener2() {
// If the Editor I'm interested in was updated ...
public void partActivated(IWorkbenchPartReference ref) {
IWorkbenchPart part = ref.getPart(true);
if (part instanceof DetailEditor) {
// ... update the view
Contact contactFromSelectedEditor = ((DetailEditor) part).detailComposite.contact;
detailComposite.update(contactFromSelectedEditor);
}
}
...
}
// Add the IPartListener2 to the page
IWorkbenchPage page = this.getSite().getPage();
page.addPartListener(pl);
}
Why use an IPartListener2 instead of an IPartListener
The IPartListener2 replaces IPartListener with 3.5.
As explained in this this answer:
You should always use IPartListener2 as it can handle part-change events on parts that have not yet been
created because they are hidden in a stack behind another part.
This
listener will also tell you when a part is made visible or hidden or
when an editor's input is changed.
Related
I have upgraded to the latest version of MvvmCross (6.4.1) from 4.2.3. I and using Xamarin Android not Xamarin forms
In the view which initiates the dialog I do the following
Create dialog fragment derived from MvxDialogFragment
Assign a view model to it
Then call ShowView on the fragment
However when I rotate the device it fails in OnCreate with the message
Your fragment is not generic and it does not have MvxFragmentPresentationAttribute attribute set!
This did not happen in 4.2.3. The reason I create dialog this way is that I want it to use different view models depending on where I need this dialog. For example I want to show a different list of data, but in the same format in the dialog.
It seems this will only work if we apply the MvxFragmentPresentationAttribute which needs the type of view model to be defined at design time rather than run time.
Is there anything I can do to achieve this
Any help will be appreciated
If you somehow need to specify the ViewModel type at runtime, you can instead of decorating the class with the MvxFragmentPresentationAttribute let it implement, IMvxOverridePresentationAttribute and return it there with the appropriate ViewModel to be presented in.
Something like:
public class MyDialog : MvxDialogFragment, IMvxOverridePresentationAttribute
{
public MvxBasePresentationAttribute PresentationAttribute(MvxViewModelRequest request)
{
return new MvxFragmentPresentationAttribute
{
ActivityHostViewModelType = myDynamicType
};
}
}
Where you implement some kind of logic to get the myDynamicType somewhere.
However, you should be able to use MvxDialogFragmentPresentationAttribute instead though and the presenter will attempt to use the topmost Android Activity to present it in if you provide a null ref as the ActivityHostViewModelType.
As the title says, I am trying to update a web app to a more recent Apache Wicket version. The problem is very like this one here, albeit the link is very old (and an ancient version of Wicket, which is not what I'm using)
http://users.wicket.apache.narkive.com/tG6XOAUM/refresh-page-after-form-submit-within-modalwindow
So what I do is:
- display a DataView in a regular page, populated using a SortableDataProvider
- create a panel inside a ModalWindow to make some data changes;
- on onSubmit (using an AjaxFallbackButton) inside this panel, insert a new item into the same SortableDataProvider which I use to populate my DataView
- I then call "target.add(wmc)" on the WebMarkupContainer surrounding my DataView
- my DataView.populateItem registers the change when I add trace code, but the change is not actually displayed ie the screen is apparently not being refreshed.
If I do the same thing from an AjaxFallbackButton.onSubmit() NOT inside a ModalWindow, but in the same WebPage as my DataView, then all is well and I see the change on the page immediately.
I started to upgrade to Wicket 8 but there is so much else to change that I'd rather not do this right now.
I can post code if needs be but I wondered if anyone had come across this problem. As I say, fine in Wicket 1.4.7. Next step would be to create a mini-app to demonstrate this, I guess, which might well lead me to a solution anyway but hoping for some good input from that Wicket community out there ;-)
You're holding a reference from one page to another:
public class TestBugInsertItemPage extends WebPage {
private TestBugPage parent;
This not allowed in Wicket, and I wonder how this has worked in 1.4.
Your trying to update components from another window, that cannot work:
#Override
protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
TestBugInsertItemPage.this.parent.dp.addLine();
target.add(TestBugInsertItemPage.this.parent.wmc);
TestBugInsertItemPage.this.parent.modal.close(target);
}
An AjaxRequestTarget is valid for a single request for a single page only.
You should use a ModelWindow with a panel instead.
Update for your second example:
Passing a panel to a different page won't make a difference. Wicket serializes pages to disk, thus you cannot share any state between them.
You should use a modal dialog with a panel instead:
TestBugPage.this.modal.setContent(TestBugPage.this.myPanel);
Now TestBugPage and your panel reside in the same component hierarchy, they communicate with each other and both can be updated on the same Ajax request.
So I have created a context box upon right click that has Add/Edit/Delete Rows. I also have a bunch of code launched before the Dialog is shown. My problem is that when I use the context menu it doesn't go through some of the code. I have tried to call on the functions directly but it doesn't format correctly.
I am mainly concerned with the edit button, here is the code I am using to bring up the edit Dialog
function editRow() {
var grid = jQuery("#<%= Jqgrid1.ClientID %>");
var rowKey = grid.getGridParam("selrow");
if (rowKey) {
// I have tried calling functions here and it still doesn't work
grid.editGridRow(rowKey, grid.editDialogOptions);
}
else {
alert("No rows are selected");
}
}
So if I use this to display the editform it isn't formatted correctly nor does it go through the functions all correctly.
I am using the ASP Webforms version of Jqgrid so I call the function by doing this
<cc1:JQGrid1 ID="Jqgrid1
//other attributes
ClientSideEvents-BeforeEditDialogShown="ChangeMonitor"
//Rest of code />
So this works just fine, and I'm trying to get the Edit button on the context menu to display correctly.
My thought was to use Jquery to trigger a click on the actual Edit button once someone used the context menu. I couldn't find an ID that would work however.
Is there an easy way to connect my context menu Edit button, with the actual Edit button in the toolbar?
Well I found a solution to my problem.
The id field of the button was edit_ct100_cpMainContent_Jqgrid1_top so I just triggered a click with this code.
$("td[id^=edit][id$=top]").trigger("click")
For some reason when I used the _ct100_cpMainContent_Jqgrid1 it wasn't working, but now it does. Hope this helps someone.
How do I unload a view from a Prism Region?
I am writing a WPF Prism app with a Ribbon control in the Shell. The Ribbon's Home tab contains a region, RibbonHomeTabRegion, into which one of my modules (call it ModuleA) loads a RibbonGroup. That works fine.
When the user navigates away from ModuleA, the RibbonGroup needs to be unloaded from the RibbonHomeTabRegion. I am not replacing the RibbonGroup with another view--the region should be empty.
EDIT: I have rewritten this part of the question:
When I try to remove the view, I get an error message that "The region does not contain the specified view." So, I wrote the following code to delete whatever view is in the region:
// Get the regions views
var regionManager = ServiceLocator.Current.GetInstance<IRegionManager>();
var ribbonHomeTabRegion = regionManager.Regions["RibbonHomeTabRegion"];
var views = ribbonHomeTabRegion.Views;
// Unload the views
foreach (var view in views)
{
ribbonHomeTabRegion.Remove(view);
}
I am still getting the same error, which tells me there is something pretty basic that I am doing incorrectly.
Can anyone point me in the right direction? Thanks for your help.
I found my answer, although I can't say I fully understand it. I had used IRegionManager.RequestNavigate() to inject the RibbonGroup into the Ribbon's Home tab, like this:
// Load RibbonGroup into Navigator pane
var noteListNavigator = new Uri("NoteListRibbonGroup", UriKind.Relative);
regionManager.RequestNavigate("RibbonHomeTabRegion", noteListNavigator);
I changed the code to inject the view by Registering it with the region, like this:
// Load Ribbon Group into Home tab
regionManager.RegisterViewWithRegion("RibbonHomeTabRegion", typeof(NoteListRibbonGroup));
Now I can remove the RibbonGroup using this code:
if(ribbonHomeTabRegion.Views.Contains(this))
{
ribbonHomeTabRegion.Remove(this);
}
So, how you inject the view apparently matters. If you want to be able to remove the view, inject by registration with the Region Manager
StockTraderRI Example Project by Microsoft contains the following example of removing views from region in ViewModel.
private void RemoveOrdersView()
{
IRegion region = this._regionManager.Regions[RegionNames.ActionRegion];
object ordersView = region.GetView("OrdersView");
if (ordersView != null)
{
region.Remove(ordersView);
}
}
Is it possible you have a RegionAdapter that is wrapping the view inside another view before adding it? The ribbonHomeTabRegion should have a property with the collection of views - is there anything inside it?
I'm currently putting together a multi-tenancy web app using MVC 3. At least 30 different Web sites will share a common codebase, and while also sharing similar under-the-hood functionality, they are need to look significantly different. As a consequence I'm using the URL to internally separate out clients, and an overridden Razor view engine (at least in terms of finding the view) to automatically select either a customised view for a given action, or the default view.
To help 'compartmentalise' a complex page, any particular view will make use of several partials, usually rendered as self-contained actions, so that generally a custom view or partial view will only have small HTML differences, helping to minimise any code specific to a client's site.
I hope you followed that background!
So one HTML page might be made up of lots of little smatterings of HTML partial views, which could come from specific folders for the client, or a general-purpose version. I'm hoping to make it easier for our designer to make minor changes to a page by easily seeing where in the folder structure the bit of HTML he wants to change are.
My proposal then is that each partial will be 'bracketed' with HTML comments such as:
{ Content of partial }
Obviously I could put these in manually, but that's just asking for trouble, for typos, for copied and then modified client versions not being updated with the correct URL. It should be possible to get this from some context and inject it, I think.
At the same time, I need to be able to not do this for certain Actions. Eg, a partial might be generating text inside a textarea, say, so the comments wouldn't be appropriate there. On the whole I'm happy to put these comments in unless I specify that it's not appropriate.
For me this suggests an ActionFilter on an Action, which I can apply site wide and then turn off for certain Actions. I'd hope that one of the overridable events would let me ascertain this path, but I can't seem to find anywhere it's stored. Furthermore, OnResultExecuting seems to fire before the Partial has been selected, and OnResultExecuted seems to have already written out the contents of the Partial, so I can't insert the starting comment here. I also can't find any reference to the path of the selected partial.
Just for completeness, it's my intention that this attribute would only write these comments when compiled in Debug mode.
So, does anyone know how I might be able to get the path to the selected View without any kind of hack between FindPartialView and the Attribute? Is my Attribute method the best choice or is there an easier way to do this? Perhaps something's built in already!
Many thanks for your help.
Well, I've never forgotten about wanting this, and always hoped I'd solve it one day, and thankfully I have.
I've overridden the default WebViewPage (I use the Razor engine), and in particular ExecutePageHierarchy to inject the comments:
public abstract class PaladinWebViewPage : PaladinWebViewPage<dynamic>
{
}
public abstract class PaladinWebViewPage<TModel> : WebViewPage<TModel>
{
public bool DisplaySourceCodeComments
{
get { return ((bool?) ViewBag.__DisplaySourceCodeComments) ?? false; }
set { ViewBag.__DisplaySourceCodeComments = value; }
}
public override void ExecutePageHierarchy()
{
base.ExecutePageHierarchy();
// Filters can be used to set and clear this value so we can decide when to show this comment
if (!DisplaySourceCodeComments) return;
var sw = Output as StringWriter;
if (sw == null) return;
var sb = sw.GetStringBuilder();
sb.Insert(0, string.Format("<!-- Start of {0} -->", VirtualPath));
sb.AppendFormat("<!-- End of {0} -->", VirtualPath);
}
VirtualPath tells us the exact file used to build the HTML, so we can inject the filename before and after. This isn't doing anything at the moment, since the default is to not show comments (the "?? false" in DisplaySourceCodeComments).
Also to use this view page you need to edit Views/Web.config and change the pageBaseType to this type.
I want to selectively turn these comments on and off so I've created an ActionFilter:
public class DisplaySourceCodeCommentsAttribute : ActionFilterAttribute
{
private readonly bool _displaceSourceCodeComments;
public DisplaySourceCodeCommentsAttribute(bool displaceSourceCodeComments)
{
_displaceSourceCodeComments = displaceSourceCodeComments;
}
public override void OnActionExecuted(ActionExecutedContext filterContext)
{
base.OnActionExecuted(filterContext);
var viewResult = filterContext.Result as ViewResultBase;
if (viewResult == null) return;
viewResult.ViewBag.__DisplaySourceCodeComments = _displaceSourceCodeComments;
}
}
I'm slightly unhappy that I've had to use the ViewBag here and also separately in the view page override, as they aren't tightly linked, but I can't find a way for the filter to directly interact with the view page, so this is something of a necessary fudge. It does have the benefit that displaying source code for a view or partial also automatically displays it for any child partials until you turn it off again, since the ViewBag is passed down the chain.
With this in place, any action can turn on the source code comments with
[DisplaySourceCodeComments(true)]
or, obviously turn it off again with false
The Attribute checks that the context result is a ViewResultBase, which means just Views and Partials, so Json or Content or redirects aren't affected, which is very handy too.
Finally, I make this action filter a global when running in debug mode so that every view, and partial has the source comment included, by adding the following line to global.asax.cs:
[#]if DEBUG
// When in debug mode include HTML comments showing where a view or partial has come from
GlobalFilters.Filters.Add(new DisplaySourceCodeCommentsAttribute(true));
[#]endif
I'm really happy I've finally got it sorted so I hope this is useful for someone else.