I want to create binding in code that will jump when the user is navigating between tabs,
or when ever a tab is created.
I tried to bind the dependency property active content property, and from some reason it doesn't work.
thanks.
What may help is to explicitly set a TwoWay binding:
<avalondock:DockingManager ActiveContent="{Binding DocumentManager.ActiveDocument,
Mode=TwoWay}" />
Related
I am trying to make the mid-section to be read only and just enabling the button "OPEN".
I have the below original code. "router-outlet" renders the combination of several feature components. And I do not want to disable each and every elements or feature components
<div="row mid-section">
<router-outlet></router-outlet>
</div>
<div class="row">
<button class="btn btn-default"> OPEN </button>
</div>
I tried by adding as below:
<div="row mid-section" readonly="readonly">
But it still allows to edit and click on button inside mid-section div.
I would really appreciate your help. Thank you!
The HTML readonly property doesn't work like that. Its only for form fields and must be on that actual DOM element.
https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/readonly
Without seeing more of your code, I can't really give a better answer than these 2 options.
Option 1, a shared service that has that read only property. You could have a service, that has a behavior subject that you can update from the parent component. The inner components would all need to have that service injected, and do something appropriate when the value changes.
Option 2, you would need a container component that has a new boolean input, and it would need to pass that value down to all the children components (which would also need an input).
Here is the link for an example of the issue I will attempt to describe. In the chips autocomplete example, click the text box to select a new fruit.
Now, before clicking anywhere else, click again on the text box as you did before.
This should result in no options showing up. The issue here is that the user must either begin keying in a new selection or first click another element in the window before matchip will show the options to choose from. I am wondering if there is a way to fix this issue. I would like a user to be able to choose a selection from the list and then immediately click the text box as they had before and make a new selection.
I'm using mat-chip-list inside an outer *ngFor iterating over a FormArray.
Here is what I'have done. It's pretty efficient :
<input
#validatorInput
#operationTrigger="matAutocompleteTrigger"
[formControl]="contactCtrl"
[matAutocomplete]="auto"
[matChipInputFor]="chipList"
(blur)="contactCtrl.setValue(''); validatorInput.value='';"
(click)="contactCtrl.setValue(''); validatorInput.value=''; operationTrigger.openPanel()">
The trick is
Always clear your html input and your (shared) formControl with an empty and not null value each time the blur and click events occur.
Do NOT do this 'clear' on the input focus event. (Because when you delete the last chip, the input is auto-focus and you will have the famous Expression has changed after it was checked.
Call operationTrigger.openPanel(); when the user click on the input
Setting contactCtrl.setValue(''); allows your autocomplete panel to be automatically opened when you call operationTrigger.openPanel()
Setting validatorInput.value=''; is just a way to properly sync your formControl with the html input to ensure a good UX/UI behavior.
Inside my formArray, the formControl is the same for all the inputs but it does not matter since the user can only manipulate one input at a given time
Since you didn't post your code and you mention the example on the material site I'm going to do it as a fork of the stackblitz example they have on their site.
But this will allow you to open the autocomplete panel again despite having had the cursor there and choosing an option previously.
// Using MatAutocompleteTrigger will give you access to the API that will allow you to
// to open the panel or keep it open
...
#ViewChild(MatAutocompleteTrigger, {static: false}) trigger: MatAutocompleteTrigger;
...
ngAfterViewInit() {
fromEvent(this.fruitInput.nativeElement, 'click')
.pipe(
tap(() => {
this.trigger.openPanel()
})
).subscribe()
}
Link to the full stackblitz:
https://stackblitz.com/edit/angular-sb38ig
Ok, I hope this doesn't have an embarrassingly obvious answer, but I could not find a solution through searching.
I'd like my longlistmulti to function basically like the Mail app, i.e. having the "select" appbar button put the list into Edit mode, so you can perform operations on it.
However I'd like to suppress the behavior where the list is responding to a tap on the left side of any of the items, that first 10% part of the item's width, that puts the List in the Edit mode.
I have a button as part of the item template, that is pretty flush against the left side, that I need as a trigger for it's own event handler for each item.
So I just want to block the event that is putting it into edit mode via tapping on items. Hope this can be done.
Steve
A quick addit'l note: I'd like to suppress this default behavior regardless, even if I do decide to not have that button as my final implementation.. i didn't want to factor that button as a permanent consideration.
You have a couple of options here. One is handling the IsSelectionEnabledChanged event, and the other is modifying the control template. If you want to place the list into edit mode yourself, I'd suggest using the template modification method, as the event handler might be a bit convoluted when it comes to determining where the change event came from.
From the Document Outline pane (CTRL+W, U to make visible), right click your list control, and navigate to Edit Additional Templates => Edit ItemContainerStyle => Edit a Copy... Use the dialog to name and place the template in your preferred resource dictionary. Look for the rectangles named InnerHintPanel and OuterHintPanel and delete them. This will remove the hit area for activating edit mode. The XAML for these rectangles is reproduced below.
<Grid HorizontalAlignment="Stretch">
...
<Rectangle x:Name="InnerHintPanel" Grid.Column="0" Width="24"
Height="{TemplateBinding HintPanelHeight}"
HorizontalAlignment="Left"
Fill="Transparent"
StrokeThickness="0">
<Rectangle.RenderTransform>
<CompositeTransform TranslateX="24"/>
</Rectangle.RenderTransform>
</Rectangle>
...
</Grid>
<Rectangle x:Name="OuterHintPanel" Width="24"
HorizontalAlignment="Left"
Height="{TemplateBinding HintPanelHeight}"
Fill="{TemplateBinding Background}"
StrokeThickness="0" Opacity="0.0"/>
You should probably delete all storyboard animations that have Storyboard.TargetName set to one of these elements' names as well, otherwise the transition in control state will cause exceptions if you enter edit mode and those elements cannot be found.
I have a GridView in a windows store app that has an ItemContainerStyleSelector. Within the style is an Image control that has a custom dependency property to set the source (This is so I can get a handle on the Image and hook up to the unloaded event).
My issue is the Image is never unloaded and seems to be reused. This means that when I set the source, the image is set on other items in the GridView as well (For Example I have an object which has no image but after scrolling away and then back again it has an image from another object).
I've tried to set virtualization mode to standard where I can but it doesn't help. Any ideas would be greatly appreciated.
Here is the Image that is contained in the style. This is passed to a method "OnRemoteURISourceChanged" when set. I'd expect a different image control whenever the method is called but this is not the case.
<Image x:Name="BackgroundImage" DataContext="{Binding CurrentBackdrop}" helpers:ImageExtensions.RemoteURISource="{Binding Uri}" Stretch="UniformToFill"/>
And here is my GridView
<GridView x:Name="ItemsGrid" Grid.Row="1" ItemsSource="{Binding BrowseResults}" SelectedItem="{Binding SelectedItem, Mode=TwoWay}" Margin="20,0,20,0"
IsItemClickEnabled="True" ItemClick="ItemsGrid_ItemClick" VirtualizingStackPanel.VirtualizationMode="Standard">
<GridView.ItemContainerStyleSelector>
<controls:UPnPCDStyleSelector CDObject="{StaticResource somestyle1}" Container="{StaticResource somestyle2}" Item="{StaticResource somestyle3}"/>
</GridView.ItemContainerStyleSelector>
<GridView.ItemsPanel>
<ItemsPanelTemplate VirtualizingStackPanel.VirtualizationMode="Standard">
<WrapGrid Orientation="Vertical" VirtualizingStackPanel.VirtualizationMode="Standard"/>
</ItemsPanelTemplate>
</GridView.ItemsPanel>
</GridView>
UPDATE: The issue appears to be the WrapGrid. If I change this to a VirtualizingStack Panel and set the VirtualizationMode to Standard then everything works as expected but obviously my items then only appear on one line and not multiple lines as I wish.
How do I set the virtualization mode of a WrapGrid?
Is there a chance your helpers:ImageExtensions.RemoteURISource doesn't clear the Image.Source when either your CurrentBackdrop property or its Uri property value is null?
Are you sure the task which is loading the img source returns to default ui context when awaiting? I don't think it is a good idea to set Image.Source property form code. The better solution would be to create a custom observable task class and bind im source to it's result. In the background you can call the task. Do you need the control to be Image? Because if it would be a control with template, it would be easier for you to do that. I can send you the class which does that if you want to.
I'm sure this is pretty easy but I'm at a loss with this one. I have a DateChooser that I'm using to highlight dates when things are being released. And that's all I want it for. I want to turn off the ability for users to click on anything. I don't see how to have selectable false. Anyone know?
Thanks
There are actually two properties that you can use to turn off user interaction:
First is the enabled property, set it enabled="false" in mxml and user
interaction will be disabled. However, Flex will render the
DateChooser dim (kind of faded away).
<mx:DateChooser id="date1" enabled="false" />
Another option is the mouseChildren property, if you set it to
mouseChildren="false" as well all children of the display object will not be enabled, in the case of the DateChooser it disables all user interaction too.
<mx:DateChooser id="date1" mouseChildren="false" />
Try placing it behind a Group that has a fill with alfa 0. That way the group will take the clicks and do nothing with them.
If i understand you correctly, then you could use the disabledDays, disabledRange or selectableRange properties of the DateChooser. E.g. such as in the code from the adobe website:
<mx:DateChooser
selectableRange="{{rangeStart: new Date(2006,0,1),
rangeEnd: new Date(2006,2,15)}}"
disabledRanges="{[new Date(2006,0,11),
{rangeStart: new Date(2006,0,23), rangeEnd: new Date(2006,1,10)}]}"
disabledDays="{[0,6]}"/>
Use this to disable all other dates than the one(s) you want highlighted. I was actually just wondering if i should do something similar, but I just ended opp using a disabled DateField(enabled=false) to display the date. I hope this helps :)