[Mobile] Center Confirmation Dialog Texts (#7492)

* Make overlay messages centered

* Fix changes so that only dialogs and not forms are affected

* Fix buttons such that they are right-aligned

* Reduce to one worker for stability

* Add test to cover new capabilities

* lint fixes

* Closes #7343
- Fixed an oversight that caused the top of form dialogs to
be scrolled out of view by default.
- Fixed approach to vertical centering for `-fit` type confirmation dialogs.
- Reduced size of confirmation dialog icons.
- Smoke tested in Chrome mobile emulator in a large variety of mobile
viewport sizes and orientations.

* Closes #7343
- Removes extra margin unintentionally added to `l-overlay-large`.

---------

Co-authored-by: John Hill <john.c.hill@nasa.gov>
Co-authored-by: Charles Hacskaylo <charles.f.hacskaylo@nasa.gov>

src/api/overlays/components/OverlayComponent.vue

@@ -29,27 +29,29 @@
         class="c-click-icon c-overlay__close-button icon-x"
         @click.stop="destroy"
       ></button>
-      <div
-        ref="element"
-        class="c-overlay__contents js-notebook-snapshot-item-wrapper"
-        tabindex="0"
-        aria-modal="true"
-        aria-label="Overlay"
-        role="dialog"
-      ></div>
-      <div v-if="buttons" class="c-overlay__button-bar">
-        <button
-          v-for="(button, index) in buttons"
-          ref="buttons"
-          :key="index"
-          class="c-button js-overlay__button"
+      <div class="c-overlay__content-wrapper">
+        <div
+          ref="element"
+          class="c-overlay__contents js-notebook-snapshot-item-wrapper"
           tabindex="0"
-          :class="{ 'c-button--major': focusIndex === index }"
-          @focus="focusIndex = index"
-          @click="buttonClickHandler(button.callback)"
-        >
-          {{ button.label }}
-        </button>
+          aria-modal="true"
+          aria-label="Overlay"
+          role="dialog"
+        ></div>
+        <div v-if="buttons" class="c-overlay__button-bar">
+          <button
+            v-for="(button, index) in buttons"
+            ref="buttons"
+            :key="index"
+            class="c-button js-overlay__button"
+            tabindex="0"
+            :class="{ 'c-button--major': focusIndex === index }"
+            @focus="focusIndex = index"
+            @click="buttonClickHandler(button.callback)"
+          >
+            {{ button.label }}
+          </button>
+        </div>
       </div>
     </div>
   </div>

src/api/overlays/components/dialog-component.scss

@@ -15,7 +15,7 @@
 
   &__icon {
     // Holds a background SVG graphic
-    $s: 80px;
+    $s: 50px;
     flex: 0 0 auto;
     min-width: $s;
     min-height: $s;

src/api/overlays/components/overlay-component.scss

@@ -19,7 +19,9 @@
   z-index: 70;
 
   &__blocker {
-    display: none; // Mobile-first
+    // Mobile-first: use the blocker to create a full look to dialogs
+    @include abs();
+    background: $colorBodyBg;
   }
 
   &__outer {
@@ -27,7 +29,13 @@
     background: $colorBodyBg;
     display: flex;
     flex-direction: column;
-    padding: $overlayInnerMargin;
+
+    body.mobile .l-overlay-fit & {
+      // Vertically center small dialogs in mobile
+      top: 50%;
+      bottom: auto;
+      transform: translateY(-50%);
+    }
   }
 
   &__close-button {
@@ -39,12 +47,32 @@
     z-index: 99;
   }
 
+  &__content-wrapper {
+    display: flex;
+    height: 100%;
+    overflow: auto;
+    flex-direction: column;
+    gap: $interiorMargin;
+
+    body.desktop & {
+      overflow: hidden;
+    }
+
+    .l-overlay-fit &,
+    .l-overlay-dialog & {
+      margin: $overlayInnerMargin;
+    }
+  }
+
   &__contents {
     flex: 1 1 auto;
     display: flex;
     flex-direction: column;
     outline: none;
     overflow: auto;
+    body.mobile & {
+      flex: none;
+    }
   }
 
   &__top-bar {
@@ -78,6 +106,10 @@
     display: flex;
     justify-content: flex-end;
     margin-top: $interiorMargin;
+    body.mobile & {
+      justify-content: flex-end;
+      padding-right: $interiorMargin;
+    }
 
     > * + * {
       margin-left: $interiorMargin;