fix(DockLayout): Invalid use of "this" in private namespace

Signed-off-by: Gordon Smith <[email protected]>

packages/widgets/src/docklayout.ts

@@ -343,10 +343,14 @@ export class DockLayout extends Layout {
 
  // Create the root node for the new config.
  if (mainConfig) {
- this._root = Private.realizeAreaConfig(mainConfig, {
- createTabBar: () => this._createTabBar(),
- createHandle: () => this._createHandle()
- });
+ this._root = Private.realizeAreaConfig(
+ mainConfig,
+ {
+ createTabBar: () => this._createTabBar(),
+ createHandle: () => this._createHandle()
+ },
+ this._document
+ );
  } else {
  this._root = null;
  }
@@ -1482,13 +1486,14 @@ namespace Private {
  */
  export function realizeAreaConfig(
  config: DockLayout.AreaConfig,
- renderer: DockLayout.IRenderer
+ renderer: DockLayout.IRenderer,
+ document: Document | ShadowRoot
  ): LayoutNode {
  let node: LayoutNode;
  if (config.type === 'tab-area') {
- node = realizeTabAreaConfig(config, renderer);
+ node = realizeTabAreaConfig(config, renderer, document);
  } else {
- node = realizeSplitAreaConfig(config, renderer);
+ node = realizeSplitAreaConfig(config, renderer, document);
  }
  return node;
  }
@@ -2190,10 +2195,11 @@ namespace Private {
  */
  function realizeTabAreaConfig(
  config: DockLayout.ITabAreaConfig,
- renderer: DockLayout.IRenderer
+ renderer: DockLayout.IRenderer,
+ document: Document | ShadowRoot
  ): TabLayoutNode {
  // Create the tab bar for the layout node.
- let tabBar = renderer.createTabBar(this._document);
+ let tabBar = renderer.createTabBar(document);
 
  // Hide each widget and add it to the tab bar.
  each(config.widgets, widget => {
@@ -2214,15 +2220,16 @@ namespace Private {
  */
  function realizeSplitAreaConfig(
  config: DockLayout.ISplitAreaConfig,
- renderer: DockLayout.IRenderer
+ renderer: DockLayout.IRenderer,
+ document: Document | ShadowRoot
  ): SplitLayoutNode {
  // Create the split layout node.
  let node = new SplitLayoutNode(config.orientation);
 
  // Add each child to the layout node.
  each(config.children, (child, i) => {
  // Create the child data for the layout node.
- let childNode = realizeAreaConfig(child, renderer);
+ let childNode = realizeAreaConfig(child, renderer, document);
  let sizer = createSizer(config.sizes[i]);
  let handle = renderer.createHandle();