File Manager Development Harness ================================ The File Manager harness hosts file manager dialogs as a regular web page. It's useful for development and manual unit testing. In order to use the harness, you must start chrome with the following arguments: chrome --allow-file-access-from-files --unlimited-quota-for-files To view the harness, visit: file://PATH/TO/src/chrome/browser/resources/file_manager/harness.html This will display a "Open File" dialog by default. You can switch to another kind of dialog using the links at the top of the page. Populating the development filesystem ===================================== The "Save File" dialog type includes "New Folder" button. This can be used to populate a few subdirectories for basic testing. The buttons at the bottom of the page allow you to add files to, or clear out the mock filesystem. (This is the filesystem associated with all file: urls.) The Choose File button (from the bottom of the page) does not support importing a hierarchy of directories. If you would like to bulk import a hierarchy, use the squashdir.py script located in file_manager/bin/squashdir.py. This will copy a tree of files into a single directory, renaming them all to include their original path. The Choose File button will reconstitute these munged filenames back into their original structure. Poking at the File Manager ========================== From the JS Console, you can refer to the fileManager object as `harness.fileManager`.