designer - draw references

packages/web/src/designer/ColumnLine.svelte

@@ -10,13 +10,14 @@
   export let designer;
   export let designerId;
   export let onChangeColumn;
+  export let domLine;
 
   $: designerColumn = (designer.columns || []).find(
     x => x.designerId == designerId && x.columnName == column.columnName
   );
 </script>
 
-<div>
+<div bind:this={domLine}>
   <CheckboxField
     checked={!!(designer.columns || []).find(
       x => x.designerId == designerId && x.columnName == column.columnName && x.isOutput

packages/web/src/designer/Designer.svelte

@@ -8,17 +8,23 @@
   import { getTableInfo } from '../utility/metadataLoaders';
   import cleanupDesignColumns from './cleanupDesignColumns';
   import _ from 'lodash';
+  import createRef from '../utility/createRef';
+  import DesignerReference from './DesignerReference.svelte';
 
   export let value;
   export let onChange;
   export let conid;
   export let database;
 
-  let domWrapper;
+  let domCanvas;
 
   $: tables = value?.tables as any[];
   $: references = value?.references as any[];
 
+  const tableRefs = {};
+  const referenceRefs = {};
+  $: domTables = _.mapValues(tableRefs, (tbl: any) => tbl.getDomTable());
+
   function fixPositions(tables) {
     const minLeft = _.min(tables.map(x => x.left));
     const minTop = _.min(tables.map(x => x.top));
@@ -260,6 +266,12 @@
       };
     });
   };
+
+  function handleMoveReferences() {
+    for(const ref of Object.values(referenceRefs) as any[]) {
+      ref.recomputePosition();
+    }
+  }
 </script>
 
 <div class="wrapper">
@@ -267,18 +279,18 @@
     <div class="empty">Drag &amp; drop tables or views from left panel here</div>
   {/if}
 
-  <div class="canvas" bind:this={domWrapper} on:dragover={e => e.preventDefault()} on:drop={handleDrop}>
-    <!-- {#each references || [] as ref (ref.designerId)}
+  <div class="canvas" bind:this={domCanvas} on:dragover={e => e.preventDefault()} on:drop={handleDrop}>
+    {#each references || [] as ref (ref.designerId)}
       <DesignerReference
-        {changeToken}
-        {domTablesRef}
+        bind:this={referenceRefs[ref.designerId]}
+        {domTables}
         reference={ref}
         onChangeReference={changeReference}
         onRemoveReference={removeReference}
         designer={value}
       />
-        {/each} 
-
+    {/each}
+    <!-- 
                 {sourceDragColumn}
         {setSourceDragColumn}
         {targetDragColumn}
@@ -287,21 +299,21 @@
                 {setChangeToken}
         onChangeDomTable={table => {
           domTablesRef.current[table.designerId] = table;
-        }}
-
-  -->
+        }} -->
 
     {#each tables || [] as table (table.designerId)}
       <DesignerTable
+        bind:this={tableRefs[table.designerId]}
         onCreateReference={handleCreateReference}
         onSelectColumn={handleSelectColumn}
         onChangeColumn={handleChangeColumn}
         onAddReferenceByColumn={handleAddReferenceByColumn}
+        onMoveReferences={handleMoveReferences}
         {table}
         onChangeTable={changeTable}
         onBringToFront={bringToFront}
         onRemoveTable={removeTable}
-        {domWrapper}
+        {domCanvas}
         designer={value}
       />
     {/each}

packages/web/src/designer/DesignerReference.svelte

@@ -0,0 +1,109 @@
+<script lang="ts">
+  import _ from 'lodash';
+
+  export let reference;
+  export let onRemoveReference;
+  export let onChangeReference;
+  export let designer;
+  export let domTables;
+
+  let src = null;
+  let dst = null;
+
+  let minpos;
+  let columnsY = [];
+
+  const buswi = 10;
+  const extwi = 25;
+
+  // const lineStyle = { fill: 'none', stroke: 'black', strokeWidth: 2 };
+
+  export function recomputePosition() {
+    const { designerId, sourceId, targetId, columns, joinType } = reference;
+
+    /** @type {DomTableRef} */
+    const sourceTable = domTables[sourceId];
+    /** @type {DomTableRef} */
+    const targetTable = domTables[targetId];
+    if (!sourceTable || !targetTable) return null;
+    const sourceRect = sourceTable.getRect();
+    const targetRect = targetTable.getRect();
+    if (!sourceRect || !targetRect) return null;
+
+    const possibilities = [];
+    possibilities.push({ xsrc: sourceRect.left - buswi, dirsrc: -1, xdst: targetRect.left - buswi, dirdst: -1 });
+    possibilities.push({ xsrc: sourceRect.left - buswi, dirsrc: -1, xdst: targetRect.right + buswi, dirdst: 1 });
+    possibilities.push({ xsrc: sourceRect.right + buswi, dirsrc: 1, xdst: targetRect.left - buswi, dirdst: -1 });
+    possibilities.push({ xsrc: sourceRect.right + buswi, dirsrc: 1, xdst: targetRect.right + buswi, dirdst: 1 });
+
+    minpos = _.minBy(possibilities, p => Math.abs(p.xsrc - p.xdst));
+
+    let srcY = _.mean(columns.map(x => sourceTable.getColumnY(x.source)));
+    let dstY = _.mean(columns.map(x => targetTable.getColumnY(x.target)));
+
+    if (columns.length == 0) {
+      srcY = sourceTable.getColumnY('');
+      dstY = targetTable.getColumnY('');
+    }
+
+    src = { x: minpos.xsrc, y: srcY };
+    dst = { x: minpos.xdst, y: dstY };
+
+    columnsY = columns.map((col, colIndex) => {
+      const y1 = sourceTable.getColumnY(col.source);
+      const y2 = targetTable.getColumnY(col.target);
+      return [y1, y2];
+    });
+  }
+
+  $: {
+    domTables;
+    recomputePosition();
+  }
+</script>
+
+{#if src && dst && minpos}
+  <svg>
+    <polyline
+      points={`
+      ${src.x},${src.y}
+      ${src.x + extwi * minpos.dirsrc},${src.y}
+      ${dst.x + extwi * minpos.dirdst},${dst.y}
+      ${dst.x},${dst.y}
+  `}
+    />
+    {#each columnsY as coly}
+      <polyline
+        points={`
+  ${src.x},${src.y}
+  ${src.x},${coly[0]}
+  ${src.x - buswi * minpos.dirsrc},${coly[0]}
+`}
+      />
+      <polyline
+        points={`
+  ${dst.x},${dst.y}
+  ${dst.x},${coly[1]}
+  ${dst.x - buswi * minpos.dirdst},${coly[1]}
+`}
+      />
+    {/each}
+  </svg>>
+{/if}
+
+<style>
+  svg {
+    position: absolute;
+    left: 0;
+    top: 0;
+    right: 0;
+    bottom: 0;
+    width: 100%;
+    height: 100%;
+  }
+  polyline {
+    fill: none;
+    stroke: var(--theme-bg-4);
+    stroke-width: 2;
+  }
+</style>

packages/web/src/designer/DesignerTable.svelte

@@ -1,7 +1,10 @@
 <script lang="ts">
+import { tick } from 'svelte';
+
   import FontIcon from '../icons/FontIcon.svelte';
   import moveDrag from '../utility/moveDrag';
   import ColumnLine from './ColumnLine.svelte';
+  import DomTableRef from './DomTableRef';
 
   export let table;
   export let onChangeTable;
@@ -15,15 +18,20 @@
   export let setSourceDragColumn;
   export let targetDragColumn;
   export let setTargetDragColumn;
-  export let onChangeDomTable;
-  export let domWrapper;
+  // export let onChangeDomTable;
+  export let domCanvas;
+  export let domTablesRef;
   export let designer;
+  export let onMoveReferences;
 
   let movingPosition = null;
+  let domWrapper;
+
+  const columnRefs = {};
 
   $: pureName = table?.pureName;
   $: alias = table?.alias;
-  $: columns = table?.columns;
+  $: columns = table?.columns as any[];
   $: designerId = table?.designerId;
   $: objectTypeField = table?.objectTypeField;
   $: left = table?.left;
@@ -35,6 +43,7 @@
   function handleMove(x, y) {
     movingPosition.left += x;
     movingPosition.top += y;
+    tick().then(onMoveReferences);
   }
   function handleMoveEnd() {
     onChangeTable({
@@ -43,12 +52,20 @@
       top: movingPosition.top,
     });
     movingPosition = null;
+    tick().then(onMoveReferences);
+  }
+
+  export function getDomTable() {
+    const domRefs = { ...columnRefs };
+    domRefs[''] = domWrapper;
+    return new DomTableRef(table, domRefs, domCanvas);
   }
 </script>
 
 <div
   class="wrapper"
   style={`left: ${movingPosition ? movingPosition.left : left}px; top:${movingPosition ? movingPosition.top : top}px`}
+  bind:this={domWrapper}
 >
   <div
     class="header"
@@ -63,7 +80,14 @@
   </div>
   <div class="columns">
     {#each columns || [] as column}
-      <ColumnLine {column} {table} {designer} {designerId} {onChangeColumn} />
+      <ColumnLine
+        {column}
+        {table}
+        {designer}
+        {designerId}
+        {onChangeColumn}
+        bind:domLine={columnRefs[column.columnName]}
+      />
     {/each}
   </div>
 </div>