FlowDocumentReader doesn't have a GoToPage method, but it supports NavigationCommands.GoToPage RoutedUICommand.
How do I send NavigationCommands.GoToPage with parameter (for example: 1) to my FlowDocumentReader from within my code (not using xaml)?
Thanks,
Yariv
Edited:
Thanks! But though I can send the command with your help, I don't get the expected results. This is the code (and I tried to use FirstPage instead of PreviousPage too):
if (NavigationCommands.PreviousPage.CanExecute(null, this) == true)
{
NavigationCommands.PreviousPage.Execute(null, this);
}
Even though the if statement is true and the inner code is being executed, the FlowDocumentReader stays in the last page...
FlowDocumentReader flowDoc;
...
NavigationCommands.GoToPage.Execute("my parameter", flowDoc);
Related
I have a Tizen Edje file which defines my layout. One part is an image with part name 'warning'. The item is set to visible in the edge file, and it shows as expected.
I want to hide this part using C code:
Evas_Object* image_NotSetYet = (Evas_Object *) edje_object_part_object_get(elm_layout_edje_get(wid->edjeLayout), "warning");
if (image_NotSetYet == NULL) {
dlog_print(DLOG_ERROR, LOG_TAG, "View: Unable to get warning image part");
return;
}
evas_object_hide(image_NotSetYet);
I have tried many different ways to get the Evas Object associated with this part name and hide it. After many hours I stumbled onto some code that I modeled after, and it seems to work. I can hide (and show) my image part now.
However, I later add an unrealted image to a swallow in this layout and show it. All of a suddent the 'warning' part image shows again. Why? Am I hiding the 'warning' part the wrong way? Is there something wrong with the above?
Alternatively, is there something wrong with the way I am adding an image to the swallow below? The image (from file) will show up, but suddenly my warning part above shows too:
Evas_Object *img = elm_image_add(wid->edjeLayout);
if (img == NULL) {
dlog_print(DLOG_ERROR, LOG_TAG, "View: Failed to add a image.");
return;
}
// Create an image and set contents to imagefile
char *imageFileName = barcode_filename();
bool isSet = elm_image_file_set(img, imageFileName, NULL);
dlog_print((isSet?DLOG_INFO:DLOG_ERROR), LOG_TAG, "View: %s file [%s] to image",(isSet==EINA_TRUE?"Set":"Failed to set"),imageFileName);
free(imageFileName);
evas_object_show(img);
// Assign the image to the swallow2 part
elm_object_part_content_set(wid->edjeLayout,"swallow2",img);
I tried adding the image to the 'window' instead of the 'layout' but that didn't seem to matter. (I've seen many contradictory examples so I don't know which is right)
I tried setting the image to the 'swallow2' part name many different ways (again, many contradictory ways show). Is this the problem?
Otherwise, can someone explain what is going wrong?
The image_NotSetYet is not an image object.
Evas_Object* image_NotSetYet = (Evas_Object *) edje_object_part_object_get(elm_layout_edje_get(wid->edjeLayout), "warning");
That refers to the "warning" swallow part object.
You should never modify the state of the returned object, because it's meant to be managed by Edje, solely.
If you want to get the image pointer from your layout as you expected, you could use following instead.
Evas_Object* image_NotSetYet = elm_object_part_content_get((wid->edjeLayout), "warning")
But as above link describes, the image object should be manged by Edje.
You might got the 2nd problem because it is managed by Edje. So please use edje_object_signal_emit to handle swallowed images.
I've got a Master/Detail DataGrid and I want to filter the details.
Here's my DataGridCollectionViewSource:
<xcdg:DataGridCollectionViewSource x:Key="Features"
Filter="ExampleFilter"
Source="{Binding Path=ItemUnderEdit.Features}"
AutoCreateDetailDescriptions="False"
AutoCreateItemProperties="False">
<xcdg:DataGridCollectionViewSource.DetailDescriptions>
<xcdg:PropertyDetailDescription RelationName="Settings"
AutoCreateDetailDescriptions="False"
AutoCreateItemProperties="False">
</xcdg:PropertyDetailDescription>
</xcdg:DataGridCollectionViewSource.DetailDescriptions>
</xcdg:DataGridCollectionViewSource>
As you can see I'm filtering it with ExampleFilter, but this only filters the master. I put a breakpoint and it never sees any details.
I cant add a filter to the Detail Descriptions in the same way. Is there any way to filter the details? Any help would be much appreciated!
I went up against this problem today - I had a simple filter for both the master and detail sections that gets turned on / off via code. For the master section, it was a simple matter of code like:
((DataGridCollectionView)grid.ItemsSource).FilterCriteriaMode = FilterCriteriaMode.None; // Off
((DataGridCollectionView)grid.ItemsSource).FilterCriteriaMode = FilterCriteriaMode.And; // On
((DataGridCollectionView)grid.ItemsSource).Refresh(); // Re-run filter.
For the details section, it should have been as simple as the following code (it wasn't though):
MyDetailDescription.FilterCriteriaMode = FilterCriteriaMode.None; // Off
MyDetailDescription.FilterCriteriaMode = FilterCriteriaMode.And; // On
Turns out, doing that will enable the new filter for any new detail sections that get generated, but not existing ones. New detail sections are generated when the master row is expanded. To get around this it turned out I needed a simple foreach loop such as:
foreach (DataGridContext context in grid.GetChildContexts()) {
((DataGridCollectionViewBase)(context.Items)).FilterCriteriaMode = PetsDetailDescriptions.FilterCriteriaMode;
}
Here's my complete(ish) code for all that:
public bool ShowDeleted {
set {
if ((grid.ItemsSource != null) && (grid.ItemsSource.GetType() == DataGridCollectionView));
DataGridCollectionView v = ((DataGridCollectionView)(grid.ItemsSource));
if (value) {
v.FilterCriteriaMode = FilterCriteriaMode.None;
MyDetailDescription.FilterCriteriaMode = FilterCriteriaMode.None;
}
else {
v.FilterCriteriaMode = FilterCriteriaMode.And;
MyDetailDescription.FilterCriteriaMode = FilterCriteriaMode.And;
}
foreach (DataGridContext context in grid.GetChildContexts()) {
((DataGridCollectionViewBase)(context.Items)).FilterCriteriaMode = PetsDetailDescriptions.FilterCriteriaMode;
}
v.Refresh();
}
}
}
I'm using that in-conjunction with a simple predefined filter criterion in the XAML. IE:
<g:DataGridItemProperty Name="IsDeleted"
DataType="{x:Type sys:Boolean}">
<g:DataGridItemProperty.FilterCriterion>
<g:EqualToFilterCriterion>
<sys:Boolean>False</sys:Boolean>
</g:EqualToFilterCriterion>
</g:DataGridItemProperty.FilterCriterion>
</g:DataGridItemProperty>
I recommend using the Xaml FilterCriterions, because if you absolutely need the Filter event, it's going to get a bit more messy. For that route, you need to do the following steps:
Tap into the event when a new child DataGridContext is added to the control.
Add a predicate reference to the context.Items.Filter property (in the code state, this is a property expecting predicate, not an event).
Write your filter code in the predicate function.
I'm not 100% sure how to achieve #1 above (as I didn't need to go that route). However, a good place to possible start is the DetailsExpanding and DetailsExpanded events of the DataGridControl. For the expanding, I'm not sure if the child DataGridContext exists yet (as there is an option to cancel the expanding). So you might have to wait until after the expanded event.
I hope this helps point you in the right direction.
I cannot get a ViewModelViewHost to work at design time in Visual Studio. Is this by design or have I set something up wrong?
In my view's ctor I have:
Locator.CurrentMutable.InitializeSplat();
Locator.CurrentMutable.InitializeReactiveUI();
Locator.CurrentMutable.Register(() => new SessionView(), typeof(IViewFor<SessionViewModel>));
In my view's XAML I have:
<d:DesignProperties.DataContext>
<local:MainWindowViewModel>
<local:MainWindowViewModel.ChildViewModel>
<local:SessionViewModel/>
</local:MainWindowViewModel.ChildViewModel>
</local:MainWindowViewModel>
</d:DesignProperties.DataContext>
<reactiveUi:ViewModelViewHost ViewModel="{Binding ChildViewModel}"/>
SessionView is an IViewFor<SessionViewModel>.
There is a comment here in the ViewModelViewHost ctor indicating that in design mode it will return before trying to create a view. But it seems strange that InUnitTestRunner should return true if there is a seperate InDesignMode property for that purpose.
// NB: InUnitTestRunner also returns true in Design Mode
if (ModeDetector.InUnitTestRunner()) {
ViewContractObservable = Observable.Never<string>();
return;
}
Bit of a late reply our apologies.
The answer is this is deliberate.
We have stuff that will break the XAML designer if ReactiveUI's code is allowed to initialize in the constructor. Hence why we don't run the values.
This is driving me nuts. I am looking here at Microsoft's function examples.
I can't see what I am doing wrong.
So, I am trying to use F# with WPF, I found a working online project template for it. Here it is .I was about to get started. Unfortunately, the designer does not work for generating events in the F# code by double clicking an element like it does in C#. But oh well, I can set what the Click does anyway. I decided I would do it all manually.
Here is my flawed attempt:
module MainApp
open System
open System.Windows
open System.Windows.Controls
open FSharpx
let mutable doc = ""
type MainWindow = XAML<"MainWindow.xaml">
let loadWindow() =
let window = MainWindow()
// Your awesome code code here and you have strongly typed access to the XAML via "window"
window.Root
let make (sender:Object, e:RoutedEventArgs) =
doc<- doc +"<?xml version=\"1.0\" standalone=\"no\"?>"
0
[<STAThread>]
(new Application()).Run(loadWindow()) |> ignore
In any event, It does not like the line with let make on it. It gives me this error:
Block following this 'let' is unfinished. Expect an expression
And yet, clearly I read on the MSDN
The compiler uses the final expression in a function body to determine the return value and type
So, it has a return, how is it an unfinished expression?
You are supposed to return window.Root from loadWindow. Right now the last bit of code inside loadWindow is the declaration of a make function, which is not valid. Remember, indentation determines scope in F#.
If you wanted to add a new function make, but leave the body of loadWindow basically empty, you need to align the indentation properly:
let loadWindow() =
let window = MainWindow()
// Your awesome code code here and you have strongly typed access to the XAML via "window"
window.Root
let make (sender:Object, e:RoutedEventArgs) =
doc<- doc +"<?xml version=\"1.0\" standalone=\"no\"?>"
0
I want to execute a data control operation (CreateInsert and Delete) from a buttons ActionListener. I am aware a data control button can be inserted from the Data Controls menu, but for various reasons I need to do it this way, a prominent one being I need to perform extra runtime checks.
I found the following code:
OperationBinding operation = bindings.getOperationBinding("operation_name");
operation.getParamsMap().put("parameter_name", parameterValue);
operation.execute();
But don't know which variables to use for myself. First of all, I don't know which binding I should use. Then, the operation name should, as far as I know, be CreateInsert, and for the next button, CreateInsert1. Thats whats used for UIBinding now (which I will remove).
The Data control I want to use the operation of is 'ARNG1'.
So in short, I need to know how to manually invoke this Data control's CreateInsert operation.
Thanks in advance.
See if this will help you:
https://blogs.oracle.com/shay/entry/doing_two_declarative_operatio
the code you want to execute an operation behind a actionlistener:
public BindingContainer getBindings() {
if (this.bindings == null) {
FacesContext fc = FacesContext.getCurrentInstance();
this.bindings = (BindingContainer)fc.getApplication().
evaluateExpressionGet(fc, "#{bindings}", BindingContainer.class);
}
return this.bindings;
}
BindingContainer bindings = getBindings();
OperationBinding operationBinding =
bindings.getOperationBinding("doQueryResultReset");
operationBinding.execute();
Similar to Joe's answer but does not use EL Expression evaluator and uses direct access instead to get the BindingContainer
//Get binding container
BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
// get an Action or MethodAction
OperationBinding method = bindings.getOperationBinding("methodAction");
method.execute();
List errors = method.getErrors();