From 1f50a970c160426b594e7dc88579269f088af669 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Keviin=20=C3=85berg=20Kultalahti?= <kevin.aberg@gmail.com>
Date: Tue, 20 Apr 2021 15:57:56 +0200
Subject: [PATCH] wip: trying to get the new TreeView component to work with
 the  drag-and-drop functionality

---
 packages/bbui/src/Menu/Item.svelte            |   2 +-
 .../NewComponentTree.svelte                   | 139 ++++++++++++++++++
 .../NewPathTree.svelte                        | 114 ++++++++++++++
 3 files changed, 254 insertions(+), 1 deletion(-)
 create mode 100644 packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/NewComponentTree.svelte
 create mode 100644 packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/NewPathTree.svelte

diff --git a/packages/bbui/src/Menu/Item.svelte b/packages/bbui/src/Menu/Item.svelte
index 58b031fe78..23116a25a0 100644
--- a/packages/bbui/src/Menu/Item.svelte
+++ b/packages/bbui/src/Menu/Item.svelte
@@ -3,7 +3,7 @@
     export let disabled = undefined;
 </script>
 
-<li on:click class="spectrum-Menu-item" class:is-disabled={disabled} role="menuitem" tabindex="0">
+<li on:click|preventDefault class="spectrum-Menu-item" class:is-disabled={disabled} role="menuitem" tabindex="0">
     <span class="spectrum-Menu-itemLabel">
         {#if icon}
             <svg class="spectrum-Icon spectrum-Icon--sizeM spectrum-Menu-itemIcon" focusable="false" aria-hidden="true" aria-label={icon}>
diff --git a/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/NewComponentTree.svelte b/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/NewComponentTree.svelte
new file mode 100644
index 0000000000..ec7fc1c4b5
--- /dev/null
+++ b/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/NewComponentTree.svelte
@@ -0,0 +1,139 @@
+<script>
+    import { store } from "builderStore"
+    import ComponentDropdownMenu from "../ComponentDropdownMenu.svelte"
+    import { DropEffect, DropPosition } from "./dragDropStore"
+    import NavItem from "components/common/NavItem.svelte"
+    import { TreeView, TreeItem as Item} from '@budibase/bbui'
+  
+    export let components = []
+    export let currentComponent
+    export let dragDropStore
+  
+    const isScreenslot = name => name?.endsWith("screenslot")
+  
+    const selectComponent = component => {
+      store.actions.components.select(component)
+    }
+
+    const dragstart = component => e => {
+    e.dataTransfer.dropEffect = DropEffect.MOVE
+    dragDropStore.actions.dragstart(component)
+  }
+
+  const dragover = (component, index) => e => {
+    const definition = store.actions.components.getDefinition(
+      component._component
+    )
+    const canHaveChildrenButIsEmpty =
+      definition?.hasChildren && !component._children?.length
+
+    e.dataTransfer.dropEffect = DropEffect.COPY
+
+    // how far down the mouse pointer is on the drop target
+    const mousePosition = e.offsetY / e.currentTarget.offsetHeight
+
+    dragDropStore.actions.dragover({
+      component,
+      index,
+      canHaveChildrenButIsEmpty,
+      mousePosition,
+    })
+
+    return false
+  }
+  </script>
+{#each components as component, index (component._id)}
+  {#if $dragDropStore?.targetComponent === component && $dragDropStore.dropPosition === DropPosition.ABOVE}
+    <div
+      on:drop={dragDropStore.actions.drop}
+      ondragover="return false"
+      ondragenter="return false"
+      class="drop-item" />
+  {/if}
+  <Item
+    draggable
+    on:dragend={dragDropStore.actions.reset}
+    on:dragstart={dragstart(component)}
+    on:dragover={dragover(component, index)}
+    on:drop={dragDropStore.actions.drop}
+    on:click={() => selectComponent(component)} 
+    title={isScreenslot(component._component) ? 'Screenslot' : component._instanceName}
+    open
+    selected={$store.selectedComponentId === component._id}>
+    {#if component._children}
+        <svelte:self
+        components={component._children}
+        {currentComponent}
+        {dragDropStore}
+        />
+    {/if}
+  </Item>
+  {#if $dragDropStore?.targetComponent === component && ($dragDropStore.dropPosition === DropPosition.INSIDE || $dragDropStore.dropPosition === DropPosition.BELOW)}
+    <div
+      on:drop={dragDropStore.actions.drop}
+      ondragover="return false"
+      ondragenter="return false"
+      class="drop-item"/>
+  {/if}
+{/each}
+  
+  <!-- <ul>
+    {#each components as component, index (component._id)}
+      <li on:click|stopPropagation={() => selectComponent(component)}>
+        {#if $dragDropStore?.targetComponent === component && $dragDropStore.dropPosition === DropPosition.ABOVE}
+          <div
+            on:drop={dragDropStore.actions.drop}
+            ondragover="return false"
+            ondragenter="return false"
+            class="drop-item"
+            style="margin-left: {(level + 1) * 16}px" />
+        {/if}
+  
+        <NavItem
+          draggable
+          on:dragend={dragDropStore.actions.reset}
+          on:dragstart={dragstart(component)}
+          on:dragover={dragover(component, index)}
+          on:drop={dragDropStore.actions.drop}
+          text={isScreenslot(component._component) ? 'Screenslot' : component._instanceName}
+          withArrow
+          indentLevel={level + 1}
+          selected={$store.selectedComponentId === component._id}>
+          <ComponentDropdownMenu {component} />
+        </NavItem>
+  
+        {#if component._children}
+          <svelte:self
+            components={component._children}
+            {currentComponent}
+            {onSelect}
+            {dragDropStore}
+            level={level + 1} />
+        {/if}
+  
+        {#if $dragDropStore?.targetComponent === component && ($dragDropStore.dropPosition === DropPosition.INSIDE || $dragDropStore.dropPosition === DropPosition.BELOW)}
+          <div
+            on:drop={dragDropStore.actions.drop}
+            ondragover="return false"
+            ondragenter="return false"
+            class="drop-item"
+            style="margin-left: {(level + ($dragDropStore.dropPosition === DropPosition.INSIDE ? 3 : 1)) * 16}px" />
+        {/if}
+      </li>
+    {/each}
+  </ul> -->
+  
+  <style>
+    ul {
+      list-style: none;
+      padding-left: 0;
+      margin: 0;
+    }
+  
+    .drop-item {
+      border-radius: var(--border-radius-m);
+      height: 32px;
+      background: var(--grey-3);
+    }
+  </style>
+  
\ No newline at end of file
diff --git a/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/NewPathTree.svelte b/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/NewPathTree.svelte
new file mode 100644
index 0000000000..ef5405e109
--- /dev/null
+++ b/packages/builder/src/components/design/NavigationPanel/ComponentNavigationTree/NewPathTree.svelte
@@ -0,0 +1,114 @@
+<script>
+    import { TreeItem as Item} from '@budibase/bbui'
+    import {
+      store,
+      selectedComponent,
+      currentAsset,
+      screenSearchString,
+    } from "builderStore"
+    import instantiateStore from "./dragDropStore"
+    import ComponentTree from "./NewComponentTree.svelte"
+    import { get } from "svelte/store"
+  
+    const ROUTE_NAME_MAP = {
+      "/": {
+        BASIC: "Home",
+        PUBLIC: "Login",
+      },
+    }
+  
+    const dragDropStore = instantiateStore()
+  
+    export let route
+    export let path
+  
+    let routeManuallyOpened = false
+    $: selectedScreen = $currentAsset
+    $: allScreens = getAllScreens(route)
+    $: filteredScreens = getFilteredScreens(allScreens, $screenSearchString)
+    $: hasSearchMatch = $screenSearchString && filteredScreens.length > 0
+    $: noSearchMatch = $screenSearchString && !filteredScreens.length
+    $: routeSelected =
+      route.subpaths[selectedScreen?.routing?.route] !== undefined
+    $: routeOpened = routeManuallyOpened || routeSelected || hasSearchMatch
+  
+    const changeScreen = screenId => {
+      store.actions.screens.select(screenId)
+    }
+  
+    const getAllScreens = route => {
+      let screens = []
+      Object.entries(route.subpaths).forEach(([route, subpath]) => {
+        Object.entries(subpath.screens).forEach(([role, id]) => {
+          screens.push({ id, route, role })
+        })
+      })
+      return screens
+    }
+  
+    const getFilteredScreens = (screens, searchString) => {
+      return screens.filter(
+        screen => !searchString || screen.route.includes(searchString)
+      )
+    }
+  
+    const toggleManuallyOpened = () => {
+      if (get(screenSearchString)) {
+        return
+      }
+      routeManuallyOpened = !routeManuallyOpened
+    }
+  </script>
+
+{#if !noSearchMatch}
+<Item icon="Folder" title={path} open={routeOpened}>
+    {#if routeOpened}
+        {#each filteredScreens as screen (screen.id)}
+            <Item
+            icon="ModernGridView"
+            selected={$store.selectedScreenId === screen.id}
+            open={$store.selectedScreenId === screen.id}
+            on:click={toggleManuallyOpened}
+            title={ROUTE_NAME_MAP[screen.route]?.[screen.role] || screen.route}
+            on:click={() => changeScreen(screen.id)}>
+                {#if selectedScreen?._id === screen.id}
+                <ComponentTree
+                    components={selectedScreen.props._children}
+                    currentComponent={$selectedComponent}
+                    {dragDropStore} />
+                {/if}
+            </Item>
+        {/each}
+    {/if}
+</Item>
+
+<!-- <NavItem
+  icon="ri-folder-line"
+  text={path}
+  on:click={toggleManuallyOpened}
+  opened={routeOpened}
+  {border}
+  withArrow={route.subpaths} />
+
+    {#if routeOpened}
+        {#each filteredScreens as screen (screen.id)}
+            <NavItem
+            icon="ri-artboard-2-line"
+            indentLevel={indent || 1}
+            selected={$store.selectedScreenId === screen.id}
+            opened={$store.selectedScreenId === screen.id}
+            text={ROUTE_NAME_MAP[screen.route]?.[screen.role] || screen.route}
+            withArrow={route.subpaths}
+            on:click={() => changeScreen(screen.id)}>
+            <ScreenDropdownMenu screenId={screen.id} />
+            </NavItem>
+            {#if selectedScreen?._id === screen.id}
+            <ComponentTree
+                level={1}
+                components={selectedScreen.props._children}
+                currentComponent={$selectedComponent}
+                {dragDropStore} />
+            {/if}
+        {/each}
+    {/if} -->
+{/if}