Enable file browser for dependencies in pipeline node properties

[vabarbosa]

This PR add support for selecting file dependencies using using a BrowseFileDialog from the Properties dialog of the Pipeline Editor.

Fixes #873

• Both files and directories are selectable
• Multiple files and directories can be selected at a time
• File Dependecies textarea can still be manually updated/edited
• BrowseFileDialog opens at the notebook path and prevents navigating to parents/grandparents directories (subdirectories are navigable)
• Selected files and/or directories are appended (relative to the notebook's parent directory) to the File Dependecies textarea

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[ajbozarth]

I'm still reviewing and testing, but I found a couple UI issues I figured I'd share now

The folder icon is missing from the crumbs when in a subfolder, but is still visible when in "root"

The Add Dependancies... button overlaps withe the text box

both issues are visible in your gif above

[vabarbosa]

I'm still reviewing and testing, but I found a couple UI issues I figured I'd share now

The folder icon is missing from the crumbs when in a subfolder, but is still visible when in "root"

The Add Dependancies... button overlaps withe the text box

both issues are visible in your gif above

thanks, i have resolved the button alignment.

as far as the folder icon, that is the link back to JupyterLab's working directory. if a notebook is within a subdirectory then my understanding is the user should not be allowed to navigate to JupyterLab's working directory (hence the reason i hid it). in any case, i have updated the PR and took a different approach. rather hide/remove the directories, the directories are just disabled and not allowed to be clicked and traversed into:

not sure which approach is preferred so feedback is welcomed.

[ajbozarth]

A few clarifying questions, but nothing blocking. Overall this works great and looks good

[ajbozarth]

Once #861 is merged this will need to be updated to

Suggested change

	const filename = this.propertiesController.getPropertyValue('filename');
	const filename = PipelineService.getWorkspaceRelativeNodePath(
	this.widgetContext.path,
	this.propertiesController.getPropertyValue('filename')
	);

[vabarbosa]

done

[ajbozarth]

LGTM with the caveat of the required fix if #861 gets merged

[karlaspuldaro]

Tested this locally, looks great!

[marthacryan]

Just tried locally and LGTM!

[ajbozarth]

Tried locally with the update to support relative paths and it still LGTM