Enhancements to sitetree js (`LeftAndMain.Tree.js`)

[sabina-talipova]

Description

I'm not sure that we plan to update JS Legacy code, but just in case I'll add this list of improvements that were planned

• updateNodesFromServer() - apply initially_opened config (See

  silverstripe-admin/client/src/legacy/LeftAndMain.Tree.js

  Line 378 in 609a070

  // TODO 'initially_opened' config doesn't apply here

  )
• onaftersubmitform() - Trigger by implementing and inspecting "changed records" metadata sent by form submission response (as HTTP response headers) (See

  silverstripe-admin/client/src/legacy/LeftAndMain.Tree.js

  Line 144 in 609a070

  // TODO Trigger by implementing and inspecting "changed records" metadata

  )
• Icon and page type hover support
• Sorting of sub nodes (originally placed in context menu)
• Automatic load of full subtree via ajax on node checkbox selection (minNodeCount = 0) to avoid doing partial selection with "hidden nodes" (unloaded markup)
• Disallow drag'n'drop when node has "noChildren" set (see siteTreeHints)
• Disallow moving of pages marked as deleted most likely by server response codes rather than clientside
• "defaultChild" when creating a page (sitetreeHints)
• Duplicate page (originally located in context menu)
• Update tree node title information and modified state after reordering (response is a JSON array)

Tasks most likely not required after moving to a standalone tree:

• Context menu - to be replaced by a bezel UI
• Refresh form for selected tree node if affected by reordering (new parent relationship)
• Cancel current form load via ajax when new load is requested (synchronous loading)

See

silverstripe-admin/client/src/legacy/LeftAndMain.Tree.js

Lines 26 to 43 in 609a070

	/**
	* @todo Icon and page type hover support
	* @todo Sorting of sub nodes (originally placed in context menu)
	* @todo Automatic load of full subtree via ajax on node checkbox selection (minNodeCount = 0)
	* to avoid doing partial selection with "hidden nodes" (unloaded markup)
	* @todo Disallow drag'n'drop when node has "noChildren" set (see siteTreeHints)
	* @todo Disallow moving of pages marked as deleted
	* most likely by server response codes rather than clientside
	* @todo "defaultChild" when creating a page (sitetreeHints)
	* @todo Duplicate page (originally located in context menu)
	* @todo Update tree node title information and modified state after reordering (response is a JSON array)
	*
	* Tasks most likely not required after moving to a standalone tree:
	*
	* @todo Context menu - to be replaced by a bezel UI
	* @todo Refresh form for selected tree node if affected by reordering (new parent relationship)
	* @todo Cancel current form load via ajax when new load is requested (synchronous loading)
	*/