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E2E scenario code for preventDefault+navigation

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Steve Sanderson 2019-09-27 11:49:48 +01:00 committed by Artak
parent 05c284fe26
commit 47d1ffce05
1 changed files with 38 additions and 0 deletions
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38
src/Components/test/testassets/BasicTestApp/RouterTest/Links.razor
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@ -39,3 +39,41 @@
<a href="/subdir/NotAComponent.html">Not a component</a> <a href="/subdir/NotAComponent.html">Not a component</a>
<a href="/subdir/routeablecomponentfrompackage.html">Cannot route to me</a> <a href="/subdir/routeablecomponentfrompackage.html">Cannot route to me</a>
<h2>Interactions with preventDefault</h2>
<p>
Note that navigation actions are independent of event bubbling. Stopping click event propagation before
it reaches an &lt;a&gt; element does <em>not</em> stop navigation from happening. This is by design,
because the same is true natively in JavaScript. Navigation only responds to preventDefault.
</p>
<p __internal_preventDefault_onclick="@ancestorPreventDefault">
<a href="about:blank" __internal_preventDefault_onclick="@targetPreventDefault">
External navigation
<span __internal_preventDefault_onclick="@descendantPreventDefault">[Descendant element]</span>
</a>
</p>
<p __internal_preventDefault_onclick="@ancestorPreventDefault">
<a href="Other" __internal_preventDefault_onclick="@targetPreventDefault">
Internal navigation
<span __internal_preventDefault_onclick="@descendantPreventDefault">[Descendant element]</span>
</a>
</p>
<fieldset class="prevent-default">
<legend>Prevent default on...</legend>
<label><input class="ancestor" type="checkbox" @bind="ancestorPreventDefault" /> Ancestor</label>
<label><input class="target" type="checkbox" @bind="targetPreventDefault" /> Target</label>
<label><input class="descendant" type="checkbox" @bind="descendantPreventDefault" /> Descendant</label>
@* So we can assert that navigation didn't happen *@
<button class="counter" @onclick="@(() => counter++)">Counter: @counter</button>
</fieldset>
@code {
bool ancestorPreventDefault;
bool targetPreventDefault;
bool descendantPreventDefault;
int counter;
}