Re: [w3c/payment-handler] Add ImageObject dictionary. (#174)

romandev commented on this pull request.



> @@ -695,6 +695,21 @@
             When called, this method executes the following steps:
           </p>
           <ol>
+            <li>If the <a data-lt="PaymentInstrument.icons">icons</a> member of
+            <var>details</var> is present, then for each <var>icon</var> in
+            <var>details</var>.<a data-lt="PaymentInstrument.icons">icons</a>:
+              <ol>
+                <li>If <var>icon</var>.<a data-lt="ImageObject.type">type</a>
+                is not a <a data-cite="#valid-mime-type">valid MIME type</a> or
+                the value of type is not a supported media format, then return
+                a <a>Promise</a> rejected with a <a>TypeError</a>.
+                </li>
+                <li>If <var>icon</var>.<a data-lt="ImageObject.sizes">sizes</a>
+                is not a <a data-lt="ImageObject.sizes">valid value</a>, then
+                return a <a>Promise</a> rejected with a <a>TypeError</a>.
+                </li>
+              </ol>
+            </li>

@rsolomakhin,

In a case of SW, it will be script_url.
If the script_url is https://example.com/abcd/sw.js, then:
```
// SW context
clients.openWindow('/test1.html');      // https://example.com/test1.html
clients.openWindow('../test2.html');    // https://example.com/test2.html
clients.openWindow('./test3.html');     // https://example.com/abcd/test3.html
```

In a case of document, it will be document_url.
If the document_url is https://example.com/hello/world/test.html, then:
```
// Window global context
navigator.serviceWorker.register('/test1.js');     // https://example.com/test1.js
navigator.serviceWorker.register('../test2.js');   // https://example.com/hello/test2.js
navigator.serviceWorker.register('./test3.js');    // https://example.com/hello/world/test3.js
```

The existing SW APIs already uses the processing. [1][2]

[1] https://w3c.github.io/ServiceWorker/#clients-openwindow
[2] https://w3c.github.io/ServiceWorker/#navigator-service-worker-register

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