Merge remote-tracking branch 'upstream/master'

[nominatim-ui.git] / src / components / UrlSubmitForm.svelte

diff --git a/src/components/UrlSubmitForm.svelte b/src/components/UrlSubmitForm.svelte
index f902f70dc3cba8d62ccbd4d6480edf27ffead0f5..220736133547babf95337a7a7b602385082619fa 100644 (file)
--- a/src/components/UrlSubmitForm.svelte
+++ b/src/components/UrlSubmitForm.svelte
@@ -1,18 +1,50 @@
 <script>
-  import { serialize_form, clean_up_url_parameters } from '../lib/api_utils.js';
   import { refresh_page } from '../lib/stores.js';
 
-  function handleSubmit(event) {
-    event.preventDefault();
+  export let page;
 
-    var target_url = serialize_form(event.target);
-    target_url = clean_up_url_parameters(target_url);
+  function serialize_form(form) {
+    var params = new URLSearchParams();
 
-    window.history.pushState({}, '', '?' + target_url);
-    refresh_page();
+    Array.prototype.slice.call(form.elements).forEach(function (field) {
+      if (!field.name || field.disabled || ['submit', 'button'].indexOf(field.type) > -1) return;
+
+      if (['checkbox', 'radio'].indexOf(field.type) > -1 && !field.checked) return;
+      if (typeof field.value === 'undefined' || field.value === '') return;
+
+      params.set(field.name, field.value);
+    });
+
+    return params;
+  }
+
+  // https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/HTML5/Constraint_validation
+  // doesn't support hidden fields, so we check those in an extra step
+  function validate_field(field) {
+    if (field.type === 'hidden') {
+      if (field.value.length) {
+        if (field.pattern && !field.value.match(field.pattern)) return false;
+      }
+    }
+    return field.checkValidity(); // for hidden field always true
+  }
+
+  function handle_submit(event) {
+    let form = event.target;
+
+    let allow_submit = true;
+
+    Array.prototype.slice.call(form.elements).forEach(function (field) {
+      if (!validate_field(field)) {
+        alert('Invalid input in ' + field.name);
+        allow_submit = false;
+      }
+    });
+
+    if (allow_submit) refresh_page(page, serialize_form(form));
   }
 </script>
 
-<form on:submit={handleSubmit} class="form-inline" role="search" accept-charset="UTF-8" action="">
-    <slot></slot>
+<form on:submit|preventDefault={handle_submit} class="form-inline" role="search" accept-charset="UTF-8" action="">
+  <slot></slot>
 </form>