I would like to have the upload component but change the text on the button (or maybe its entire content through a render fragment template) through a Parameter on the component level.
At the moment I can only do this through localization for all components.
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ADMIN EDIT
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The request targets both the Upload and the FileSelect components.
I would like to have my users click my own button or element to trigger the file select dialog that you get from clicking the "Select Files..." button on the Upload component.
A workaround is to use a function like this
window.customUploadClick = function () {
$('.k-upload-button input').trigger('click');
}
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ADMIN EDIT
Completed with 3.0.0 release
If you are not using jQuery already, you don't have to add it for this, standard browser API can do this too:
@inject IJSRuntime _js
<script suppress-error="BL9992">
window.customUploadClick = function () {
document.querySelector(".k-upload-button input").click();
}
</script>
<TelerikButton OnClick="@InvokeSelectClick">invoke click</TelerikButton>
<TelerikUpload></TelerikUpload>
@code{
async Task InvokeSelectClick()
{
await _js.InvokeVoidAsync("customUploadClick");
}
}
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Like in the Kendo Upload https://docs.telerik.com/kendo-ui/api/javascript/ui/upload/configuration/files - I want to show some files initially to my user
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ADMIN EDIT:
A possible workaround is to use a ListView and mimic the Upload/FileSelect interface:
<TelerikUpload SaveUrl="api/upload/save"
RemoveUrl="api/upload/remove">
</TelerikUpload>
@{
if (OldFiles.Any())
{
<p>Older files:</p>
<div class="k-upload">
<ul class="k-upload-files k-reset">
<TelerikListView Data="@OldFiles" @ref="@ListView">
<Template>
<li class="k-file k-file-success">
<div class="k-file-single">
<span class="k-file-group-wrapper">
<span class="k-file-group k-icon k-i-file"></span>
</span>
<span class="k-file-name-size-wrapper">
<span class="k-file-name " title="@context.Name"> @context.Name </span>
<span class="k-file-validation-message k-text-success">Existing file.</span>
</span>
<span class="k-upload-status">
<TelerikButton ButtonType="@ButtonType.Button" Title="Remove"
OnClick="@( _ => RemoveOldFile(context) )"
Icon="x" FillMode="@ThemeConstants.Button.FillMode.Flat" />
</span>
</div>
</li>
</Template>
</TelerikListView>
</ul>
</div>
}
}
@code {
TelerikListView<UploadedFile> ListView { get; set; }
List<UploadedFile> OldFiles { get; set; } = new List<UploadedFile>()
{
new UploadedFile() { Id = 1, Name = "foo.txt" },
new UploadedFile() { Id = 2, Name = "bar.txt" },
};
async Task RemoveOldFile(UploadedFile file)
{
// delete the file from the remote server...
// ...
// update the client UI
OldFiles.Remove(file);
ListView.Rebind();
}
public class UploadedFile
{
public int Id { get; set; }
public string Name { get; set; }
}
}
<TelerikUpload SaveUrl="@SaveUrl"
RemoveUrl="@RemoveUrl"
AllowedExtensions="@( new List<string>() { ".pdf", ".docx" } )"
OnSelect="@OnSelectHandler"
OnCancel="@OnCancelHandler"
OnRemove="@OnRemoveHandler">
</TelerikUpload>
When the AllowedExtensions is set for the Telerik Upload control, it is expected that the File selection dialog box should filter the files by the file types in the Allowed extensions only. However, the dialog shows all files.
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ADMIN EDIT
This will likely be exposed via the accept attribute the <input type=file> exposes. Note that it requires MIME types, not extensions.
At the moment, the extension can be filtered only after the file is selected: https://docs.telerik.com/blazor-ui/components/upload/validation.
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Accessibility issue
impacts screen reader user
[WCAG 1.3.1 level A] [WCAG 4.1.3 level AA]
tested using NVDA on chrome browser
on selecting upload button (w/ files already chosen) user is not advised the overall status of the files or individual files.
A visual user is informed;
This has not been 100% tested, as the upload was not targeted to an end point.
Suggestion: use aria-live
Also note, on selecting the upload button the focus is returned to input, and input says no files.