From 7c39430d1c636cf039d2a69165b0ad4f4cd0aa6d Mon Sep 17 00:00:00 2001
From: Andrew Kingston <andrew@kingston.dev>
Date: Mon, 21 Mar 2022 13:38:53 +0000
Subject: [PATCH] Add vertical scrolling to selected component and support
 scrolling to selected screen

---
 .../src/components/common/NavItem.svelte      | 83 ++++++++++++-------
 .../ComponentTree.svelte                      |  6 --
 .../ComponentNavigationTree/PathTree.svelte   | 12 ++-
 .../FrontendNavigatePane.svelte               | 47 +++++++----
 4 files changed, 89 insertions(+), 59 deletions(-)

diff --git a/packages/builder/src/components/common/NavItem.svelte b/packages/builder/src/components/common/NavItem.svelte
index 6e16879bc2..0f8ec43669 100644
--- a/packages/builder/src/components/common/NavItem.svelte
+++ b/packages/builder/src/components/common/NavItem.svelte
@@ -1,6 +1,6 @@
 <script>
   import { Icon } from "@budibase/bbui"
-  import { createEventDispatcher } from "svelte"
+  import { createEventDispatcher, getContext } from "svelte"
 
   export let icon
   export let withArrow = false
@@ -14,13 +14,25 @@
   export let iconText
   export let iconColor
 
+  const scrollApi = getContext("scroll")
   const dispatch = createEventDispatcher()
-  let textRef
+
+  let contentRef
+  $: selected && contentRef && scrollToView()
 
   function onIconClick(event) {
     event.stopPropagation()
     dispatch("iconClick")
   }
+
+  const scrollToView = () => {
+    if (!scrollApi || !contentRef) {
+      return
+    }
+    console.log("selected", text)
+    const bounds = contentRef.getBoundingClientRect()
+    scrollApi.scrollTo(bounds)
+  }
 </script>
 
 <div
@@ -34,35 +46,33 @@
   on:dragover
   on:drop
   on:click
-  on:mouseover={() => {
-    const size = textRef.getBoundingClientRect()
-    dispatch("mouseover", size.width)
-  }}
   ondragover="return false"
   ondragenter="return false"
 >
-  {#if withArrow}
-    <div class:opened class="icon arrow" on:click={onIconClick}>
-      <Icon size="S" name="ChevronRight" />
-    </div>
-  {/if}
+  <div class="nav-item-content" bind:this={contentRef}>
+    {#if withArrow}
+      <div class:opened class="icon arrow" on:click={onIconClick}>
+        <Icon size="S" name="ChevronRight" />
+      </div>
+    {/if}
 
-  <slot name="icon" />
-  {#if iconText}
-    <div class="iconText" style={iconColor ? `color: ${iconColor};` : ""}>
-      {iconText}
-    </div>
-  {:else if icon}
-    <div class="icon">
-      <Icon color={iconColor} size="S" name={icon} />
-    </div>
-  {/if}
-  <div class="text" bind:this={textRef}>{text}</div>
-  {#if withActions}
-    <div class="actions">
-      <slot />
-    </div>
-  {/if}
+    <slot name="icon" />
+    {#if iconText}
+      <div class="iconText" style={iconColor ? `color: ${iconColor};` : ""}>
+        {iconText}
+      </div>
+    {:else if icon}
+      <div class="icon">
+        <Icon color={iconColor} size="S" name={icon} />
+      </div>
+    {/if}
+    <div class="text">{text}</div>
+    {#if withActions}
+      <div class="actions">
+        <slot />
+      </div>
+    {/if}
+  </div>
 </div>
 
 <style>
@@ -74,11 +84,9 @@
     padding: 0 var(--spacing-m) 0 var(--spacing-xl);
     height: 32px;
     display: flex;
-    flex-direction: row;
-    justify-content: flex-start;
-    align-items: center;
-    gap: var(--spacing-xs);
-    width: calc(max-content - 64px);
+    flex-direction: column;
+    justify-content: center;
+    align-items: flex-start;
   }
   .nav-item.selected {
     background-color: var(--grey-2);
@@ -91,6 +99,16 @@
     visibility: visible;
   }
 
+  .nav-item-content {
+    flex: 1 1 auto;
+    display: flex;
+    flex-direction: row;
+    justify-content: flex-start;
+    align-items: center;
+    gap: var(--spacing-xs);
+    width: max-content;
+  }
+
   .icon {
     font-size: 16px;
     flex: 0 0 20px;
@@ -117,6 +135,7 @@
     max-width: 180px;
     overflow: hidden;
     text-overflow: ellipsis;
+    flex: 0 0 auto;
   }
 
   .actions {
diff --git a/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/ComponentTree.svelte b/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/ComponentTree.svelte
index c2675fdbc4..ddcc08479b 100644
--- a/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/ComponentTree.svelte
+++ b/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/ComponentTree.svelte
@@ -1,5 +1,4 @@
 <script>
-  import { getContext } from "svelte"
   import { store } from "builderStore"
   import { DropEffect, DropPosition } from "./dragDropStore"
   import ComponentDropdownMenu from "./ComponentDropdownMenu.svelte"
@@ -13,8 +12,6 @@
   export let level = 0
   export let dragDropStore
 
-  const scrollApi = getContext("scroll")
-
   let closedNodes = {}
 
   const selectComponent = component => {
@@ -96,9 +93,6 @@
         on:dragover={dragover(component, index)}
         on:iconClick={() => toggleNodeOpen(component._id)}
         on:drop={onDrop}
-        on:mouseover={e => {
-          scrollApi.scrollTo(level + 1, e.detail)
-        }}
         text={getComponentText(component)}
         withArrow
         indentLevel={level + 1}
diff --git a/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/PathTree.svelte b/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/PathTree.svelte
index 2a6d6d7662..84d640a2a2 100644
--- a/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/PathTree.svelte
+++ b/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/PathTree.svelte
@@ -66,6 +66,9 @@
     }
     routeManuallyOpened = !routeManuallyOpened
   }
+
+  $: console.log($store.selectedComponentId)
+  $: console.log()
 </script>
 
 {#if !noSearchMatch}
@@ -76,9 +79,6 @@
     opened={routeOpened}
     {border}
     withArrow={route.subpaths}
-    on:mouseover={e => {
-      scrollApi.scrollTo(0, e.detail)
-    }}
   >
     <PathDropdownMenu screens={allScreens} {path} />
   </NavItem>
@@ -88,14 +88,12 @@
       <NavItem
         icon="WebPage"
         indentLevel={indent || 1}
-        selected={$store.selectedScreenId === screen.id}
+        selected={$store.selectedScreenId === screen.id &&
+          $store.currentView === "detail"}
         opened={$store.selectedScreenId === screen.id}
         text={ROUTE_NAME_MAP[screen.route]?.[screen.role] || screen.route}
         withArrow={route.subpaths}
         on:click={() => changeScreen(screen.id)}
-        on:mouseover={e => {
-          scrollApi.scrollTo(1, e.detail)
-        }}
       >
         <ScreenDropdownMenu screenId={screen.id} />
       </NavItem>
diff --git a/packages/builder/src/components/design/NavigationPanel/FrontendNavigatePane.svelte b/packages/builder/src/components/design/NavigationPanel/FrontendNavigatePane.svelte
index 12282323ee..3cb99a2003 100644
--- a/packages/builder/src/components/design/NavigationPanel/FrontendNavigatePane.svelte
+++ b/packages/builder/src/components/design/NavigationPanel/FrontendNavigatePane.svelte
@@ -26,32 +26,50 @@
 
   let scrollRef
 
-  const scrollTo = (indent, width) => {
-    if (!indent) {
+  const scrollTo = bounds => {
+    if (!bounds) {
       return
     }
 
-    // Padding left + icon
-    const end = indent * 14 + 20 + 16 + 4 + width + 40
-    let scrollLeft = 0
+    const sidebarWidth = 259
+    const navItemHeight = 32
 
-    if (end > 259) {
-      scrollLeft = end - 259
+    let scrollBounds = scrollRef.getBoundingClientRect()
+    let newScrollOffsets = {}
+
+    // Calculate left offset
+    const offsetX = bounds.left + bounds.width + scrollRef.scrollLeft + 20
+    if (offsetX > sidebarWidth) {
+      newScrollOffsets.left = offsetX - sidebarWidth
+    } else {
+      newScrollOffsets.left = 0
+    }
+    if (newScrollOffsets.left === scrollRef.scrollLeft) {
+      delete newScrollOffsets.left
     }
 
-    if (scrollLeft === scrollRef.scrollLeft) {
+    // Calculate top offset
+    const offsetY = bounds.top - scrollBounds?.top + scrollRef.scrollTop
+    const upperOffset = 2 * navItemHeight - 8
+    const lowerOffset = navItemHeight + 8
+    if (offsetY > scrollRef.scrollTop + scrollRef.offsetHeight - upperOffset) {
+      newScrollOffsets.top = offsetY - scrollRef.offsetHeight + upperOffset
+    } else if (offsetY < scrollRef.scrollTop + lowerOffset) {
+      newScrollOffsets.top = offsetY - lowerOffset
+    } else {
+      delete newScrollOffsets.top
+    }
+
+    // Skip if offset is unchanged
+    if (newScrollOffsets.left == null && newScrollOffsets.top == null) {
       return
     }
 
+    // Smoothly scroll to the offset
     scrollRef.scroll({
-      left: scrollLeft,
+      ...newScrollOffsets,
       behavior: "smooth",
     })
-
-    // if (indentLevel === 0) {
-    // } else {
-    //   scrollRef.scrollLeft = 4 + indentLevel * 14
-    // }
   }
 
   setContext("scroll", {
@@ -192,5 +210,6 @@
     flex: 1 1 auto;
     overflow: auto;
     height: 0;
+    position: relative;
   }
 </style>